CN108004187A - A kind of lactobacillus gasseri and its application for being used to prepare vagina antibacterial medicines - Google Patents

A kind of lactobacillus gasseri and its application for being used to prepare vagina antibacterial medicines Download PDF

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CN108004187A
CN108004187A CN201810026176.2A CN201810026176A CN108004187A CN 108004187 A CN108004187 A CN 108004187A CN 201810026176 A CN201810026176 A CN 201810026176A CN 108004187 A CN108004187 A CN 108004187A
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lactobacillus gasseri
lactobacillus
vaginal
vagina
gasseri
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CN108004187B (en
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李煜龙
陈贵浩
潘立
黄旭藩
许少燕
姚耀宏
赵湘江
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Guangdong Longchuangji Pharmaceutical Co ltd
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    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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Abstract

The present invention provides a kind of lactobacillus gasseri and its applications of vagina antibacterial medicines is used to prepare, which is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, its deposit number is CGMCC No.14109.Study it and be metabolized performance discovery, relatively common lactobacillus gasseri, the bacterial strain possesses stronger lactic acid and hydrogen peroxide manufacture ability, very strong to the bacteriostasis of pathogenic bacteria, while has prominent vaginal epithelial cell adhesive capacity.The new property found based on more than, present invention determine that preparing the new application of vagina antibacterial medicines using it, it can be achieved that the treatment of various bacterial vaginal disease.Using microbial inoculum of the present invention to bacterial vaginosis significant effect, and it is safe and non-toxic, stability is good, can preserve for a long time, further relate to its purposes in preventing and/or treating the medicine of gynecological disease.

Description

A kind of lactobacillus gasseri and its application for being used to prepare vagina antibacterial medicines
Technical field
The present invention relates to microbial technology field, adjusting and bacterial vaginosis disease further to microecology in vaginas environment The treatment of disease, and in particular to a kind of lactobacillus gasseri and its application for being used to prepare vagina antibacterial medicines.
Background technology
For healthy women intravaginal there are multiple-microorganism, they constitute mutually restriction, mutually association between host, environment Adjust, the microecology in vaginas system of dynamic equilibrium.The vaginal flora of healthy women is mainly made of lactobacillus, including plant breast bar Bacterium, Lactobacillus Jensenii, lactobacillus gasseri, Lactobacillus crispatus, Lactobacillus vaginalis, lactobacillus gasseri etc..Lactobacillus under normal circumstances It can play a protective role to vagina, vagina is produced when the lactobacillus disorder of microecology in vaginas can cause pathogenic bacteria to be invaded It is scorching.
Bacterial vaginosis BV (BV) is due to vaginal dysbacteriosis, and the lactobacillus of host itself reduces and causes it A large amount of numerous plants of his conditionity pathogenic microorganism such as Gardnerella, various anaerobic bacterias, bending vibrios etc., usual BV be actually with A kind of mixed infection based on bacterium protein of Gardnerella vaginalis.Using antibiosis extract for treating, can respite BV symptom, but also reduced this Lactobacillus further reduce, aggravate microecology in vaginas imbalance so that BV recurs repeatedly.How Control in recurring, thoroughly radical cure Bacterial vaginosis BV is the thorny problem of ob-gyn's urgent need to resolve.
Research shows:Produce H2O2Lactobacillus with lactic acid is the dominant bacteria of healthy women intravaginal, is that protection vagina is exempted from An important factor for by pathogenic infection, the acid and some antimicrobial agents that in addition lactobacillus metabolism produces can also effectively inhibit The numerous plant of growth of other bacteriums.
Healthy women intravaginal has individual difference, and anti-pathogenic bacteria energy between each strain of lactobacillus there are a variety of lactobacillus Force difference is different obvious., it is necessary to consider the species of lactobacillus when selecting lactobacillus probiotics, it produces acid, production H2O2Ability, and with The ability of vaginal epithelial cell adhesion, can wherein lactobacillus successfully be colonized in vagina, be the basis of lactobacillus continuous action, It is the key factor that lactobacillus plays curative effect.It is not actually that China's woman vagina is excellent that market, which has product " Lactobacillus delbrueckii ", at present Gesture flora, colonization ability is poor, can not maintain stable viable bacteria content, it is impossible to meet the needs of gynecological clinic.
Lactobacillus gasseri (Lactobacillus gasseri), is lactobacillus, is one of Body normal flora, extensively It is distributed in human body intestinal canal, is also distributed in vagina.In the prior art, lactobacillus gasseri is mainly used for stimulating immune thin Intracrine antiallergy relevant cell hormone;In addition, also intestinal flora feature can be improved by itself flora advantage, thus for normal For advising bacterial strain, lactobacillus gasseri does not have specific bacteriostasis in the category of cognition of the prior art.
The content of the invention
The present invention is intended to provide a kind of specific lactobacillus gasseri, does not have to solve conventional Grignard lactobacillus in the prior art There is the technical problem of vaginal pathogenic rejection ability.
Another technical problem to be solved by the present invention is that conventional Grignard lactobacillus production hydrogen peroxide manufacture ability is relatively low.
The invention solves another technical problem be conventional Grignard lactobacillus lactic acid production it is relatively low.
The invention solves another technical problem be in the prior art conventional Grignard lactobacillus colonizing in vagina, deposit Work is ineffective.
The invention solves another technical problem be in the prior art be directed to vaginal pathogenic microbial inoculum class antibacterial medicines Therapeutic effect is bad.
To realize above technical purpose, the present invention uses following technical scheme:
A kind of separated lactobacillus gasseri (Lactobacillus gasseri), it is RD-0046 to be numbered in of the invention (lactobacillus gasseri), is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, its deposit number is CGMCC No.14109。
Above-mentioned lactobacillus gasseri (Lactobacillus gasseri) RD-0046 is China's Healthy women of child-bearing age vagina point Screening is got in secretion, is preserved in on May 10th, 2017 in China Committee for Culture Collection of Microorganisms's commonly micro- life Thing center (abbreviation CGMCC), depositary institution address are:Yard 1, BeiChen xi Road, Chaoyang District, Beijing City 3, the micro- life of the Chinese Academy of Sciences Thing research institute, preservation registration number are CGMCC No.14109, and the Classification And Nomenclature of the bacterial strain is lactobacillus gasseri (Lactobacillus gasseri)。
Above-mentioned separated lactobacillus gasseri RD-0046, is sequenced using 16SrDNA, with grignard in GenBank databases Lactobacillus base sequence homology score value is more than 98%.
On the basis of above technical scheme, it is used to prepare vagina invention further provides above-mentioned lactobacillus gasseri and causes The application of germ antibacterial medicines.
Preferably, the medicine is microbial inoculum, which colonizes and survives on vaginal epithelial cell in vaginal environment.
Preferably, the medicine is microbial inoculum, which is metabolized production H in vaginal environment2O2
Preferably, the pathogenic bacteria are Gardnerella vaginalis.
Preferably, the pathogenic bacteria are atropic ripple bacterium.
Preferably, the pathogenic bacteria are Candida albicans, staphylococcus aureus, escherichia coli, the false list of verdigris Born of the same parents bacterium or salmonella etc..
Meanwhile invention further provides above-mentioned lactobacillus gasseri to be used to prepare vaginal disease prevention or medicine Using.
Preferably, the vaginal disease is vulvovaginal candidiasis, trichomonas vaginitis, senile vagina Scorching, non-specific vagina infection or Combination vagina infection.
The isolated first one plant of lactobacillus gasseri of the present invention, studies its and is metabolized performance and find that the bacterial strain possesses excellent Lactic acid production capacity and production hydrogen peroxide energy, it is very strong to the bacteriostasis of pathogenic bacteria, while have the prominent vagina epithelium thin Born of the same parents' adhesive capacity.The new property found based on more than, present invention determine that using it the new application of vagina antibacterial medicines is prepared, it is real The treatment of various bacterial vaginal disease is showed.
The beneficial effect produced using above-mentioned technical proposal is:(1) lactobacillus gasseri RD-0046 bacterial strains of the invention can To preserve for a long time, and bacterial vaginosis BV and various vagina infections are resisted, including candida albicans vaginitis, gonorrhoea, virus Property vaginitis, and urethral infection etc..(2) bacterial strain of the invention is directly collected in healthy human body, has actively stable life Thing characteristic, without domestication and rejuvenation technique, is directly entered preparation process.(3) bacterial strain of the invention, which has, suppresses to add moral Receive Salmonella, suppress Candida albicans effect, with it is commercially available control bacterium compared with, advantageous vaginal epithelial cell adhesive force, With the advantageous ability being colonized in primate vagina.
Brief description of the drawings
Fig. 1 is the full face of lactobacillus gasseri RD-0046 colonial morphologies in the specific embodiment of the invention;
Fig. 2 is the gram stain microscopy photo of lactobacillus gasseri RD-0046 in the specific embodiment of the invention;
Fig. 3 is the 16SrDNA gene PCR amplified productions of lactobacillus gasseri RD-0046 in the specific embodiment of the invention Electrophoretogram;
Fig. 4 is the lactate detection collection of illustrative plates of lactobacillus gasseri RD-0046 in the specific embodiment of the invention;
Fig. 5 is lactobacillus gasseri RD-046 hydrogen peroxide colour developing 5min and 10min pictures in the specific embodiment of the invention;
Fig. 6 be in the specific embodiment of the invention lactobacillus gasseri RD-0046 to kanamycins, fleraxacin and A Moxi The antibiotic susceptibility test bacterium colony figure of woods/clavulanic acid;
Fig. 7 be in the specific embodiment of the invention lactobacillus gasseri RD-0046 (left side) and Lactobacillus delbrueckii (right side) to vagina The fungistatic effect photo of Gardnerella;
Fig. 8 be in the specific embodiment of the invention lactobacillus gasseri RD-0046 (left side) and Lactobacillus delbrueckii (right side) to sramana The fungistatic effect photo of Salmonella;
Fig. 9 be in the specific embodiment of the invention lactobacillus gasseri RD-0046 (left side) and Lactobacillus delbrueckii (right side) to verdigris The fungistatic effect photo of pseudomonad;
Figure 10 is that lactobacillus gasseri RD-0046 is colonized machin vagina after machin vagina in the specific embodiment of the invention The electrophoretogram of microbiota part bacterial strain 16SrDNA fragment pcr amplification products;
Figure 11 is the scanning electron microscope (SEM) photograph of lactobacillus gasseri RD-0046 of the present invention.
Embodiment
The embodiment of the present invention will be described in detail below.In order to avoid excessive unnecessary details, It will not be described in detail in following embodiments to belonging to known structure or function.In addition to being defined, institute in following embodiments Technical and scientific term has the identical meanings being commonly understood by with those skilled in the art of the invention.
Test reagent consumptive material used, is routine biochemistry reagent unless otherwise specified in following embodiments;The experiment Method, is conventional method unless otherwise specified;Quantitative test in following embodiments, is respectively provided with three repeated experiments, as a result It is averaged;% in following embodiments, is mass percentage unless otherwise instructed.
Used Bacteria Culture based component and preparation method are as follows in following embodiments:
1st, meat soup solid medium (MRS) is prepared:
(1) by agar powder wiring solution-forming, 1.5g/100ml deionized waters;
(2) MRS culture medium 17.91g/100ml agar solutions are added, are mixed;
(3) autoclave, 1.0MPa steam sterilizings 20 minutes are put into;
(4) treat that culture medium temperature is cooled to room temperature and pour into culture dish, it is a according to culture dish size about 10ml/ or 20ml/;
(5) in being operated in super-clean bench.Into agar shape after cooling, mark culture medium title and prepare the date, be put in 4 DEG C of refrigerators It is stand-by.
2nd, meat soup fluid nutrient medium (MRS) is prepared:
(1) MRS culture mediums are added into deionized water, ratio is 17.9l g/100ml;
(2) autoclave, 1.0MPa steam sterilizings 20 minutes are put into;
(3) take out, dispense into EP pipes, each 1.0ml after pot no pressure subject to sterilization.Mark culture medium title and prepare day Phase, it is stand-by to be put in 4 DEG C of refrigerators.
3rd, hydrogen peroxide (H2O2) identification culture medium preparation:
(1) with meat soup solid medium (MRS) preparation steps (1) to (4);
(2) take out after pot no pressure subject to sterilization, slightly cool down, but still it is (dense eventually in adding TMB in super-clean bench when being liquid condition Spend 0.25mg/m1), HRP (final concentration 0.01mg/m1), mix;
(3) pour into culture dish after culture medium temperature is down to about 45 DEG C, into agar shape after cooling, mark culture medium title and The date is prepared, it is stand-by to be put in 4 DEG C of refrigerators.
Embodiment 1 (separation of lactobacillus gasseri RD-0046 floras and inoculation, purifying, Zengjing Granule)
1st, the separation and inoculation of lactobacillus gasseri RD-0046 floras:Subject's vaginal side is gathered with two sterile cotton swabs Secretion on wall, 24 it is interior when small be inoculated in the culture dish equipped with prepared MRS culture mediums with various concentrations, and mark letter Breath, culture dish is placed in anaerobic jar, and be put into CO2Aerogenesis bag, is placed in 37 DEG C of incubators, is incubated more than 48h.
2nd, the purifying of lactobacillus gasseri bacterial strain RD-0046, Zengjing Granule:According to bacterium colony different shape (surface, edge etc.), Size counts respectively, homomorphosis, it is of the same size be denoted as one kind, a little bacterium in oese picking single bacterium colony, by " oblique line Method " is seeded to MRS solid mediums with the single bacterium colony isolated and purified;Single bacterium on bacterium toothpick picking MRS solid mediums Fall a little bacterium, be seeded to MRS fluid nutrient mediums, be placed in 37 DEG C of incubators, Anaerobic culturel 24h-48h, filters out new bacterial strain.
Embodiment 2 (identification and preservation of lactobacillus gasseri RD-0046 bacterial strains)
1st, cultural character, dyeing microscopic examination and morphological feature:The bacterium colony obtained after culture such as attached drawing 1, bacterium colony is circular, edge Neatly, surface is smooth, more flat, translucent;The bacterium pure culture smear is taken to carry out Gram's staining, as a result as attached drawing 2, leather are blue Albert'stain Albert is positive, thin rod shape, holds blunt circle, is arranged in chain or filament shape, the results showed that:Separated bacterial strain preliminary judgement is breast Bacillus.
2nd, 16SrDNA gene orders are identified:DNA extractions are carried out with bacterial genomes DNA extraction kit, and use primer To 27F (5 '-AGAGTTTGATCMTGGCTCAG-3 '), 1492R (5 '-TACGGYTACCTTGTTACGACTT-3 '), carries out PCR Amplification, takes PCR product to carry out gel electrophoresis, determines 16SrDNA genetic fragments, single clearly PCR is about being obtained at 1500bp Product band, is shown in attached drawing 3.PCR product is purified and determined dna sequence, using Sanger PCR sequencing PCRs, sequencing primer pair For 27F/1492R, instrument ABI3730XL is sequenced, sequencing result is compared with GenBank databases, it is homologous with lactobacillus gasseri Property similarity be more than 99%.The category kind finally identified is lactobacillus gasseri.The variable region sequences of its 16SrDNA are shown in sequence table SEQ ID NO:1。
3rd, physiological and biochemical property:Pass through aesculin hydrolysis experiment, methyl red test (MR experiments), voges-Proskauer test (VP experiments), indole experiment, triple sugar iron test, kirschner disaccharide iron tests, urease test, phenylalanine deaminase experiment, Amino acid decarboxylase enzyme test, gelatin liquefaction test, sodium malonate experiment, citrate experiment (citrate experiment), nitrate Reduction test, litmus milk experiment, bacterium dynamic test measure bacterial strain biochemical reactions, acquired results are as shown in table 1:
The physio-biochemical characteristics experimental result of 1 lactobacillus gasseri RD0046 of table
Physiology and biochemistry project As a result
Aesculin hydrolysis experiment +
Methyl red test (MR experiments) +
Voges-Proskauer test (VP experiments) -
Indole is tested -
Triple sugar iron test -
Kirschner disaccharide iron tests -
Urease test -
Phenylalanine deaminase is tested -
Amino acid decarboxylase enzyme test -
Gelatin liquefaction test -
Sodium malonate is tested -
Citrate tests (citrate experiment) -
Nitrate reduction test -
Litmus milk is tested Solidification production acid
Bacterium dynamic test -
+:Represent positive;-:Represent negative
Biochemical identification, mirror are carried out to bacterial strain using the API 50CHL lactobacillus identification systems of French Mei Liai companies production It is as shown in table 2 to determine result statistics
2 lactobacillus gasseri RD-0046API 50CH test bar reaction results of table
+:Represent positive;-:Represent negative;d:Represent weakly positive
Thus biochemical collection of illustrative plates judges that bacterial strain biochemical characteristic meets the biochemical characteristic of lactobacillus gasseri.
3rd, the preservation of bacterial strain
Lactobacillus gasseri (Lactobacillus gasseri) RD-0046 of the present invention is cloudy from Chinese healthy women of reproductive age Screening is got in road secretion, has been preserved in on May 10th, 2017 common in China Committee for Culture Collection of Microorganisms Microorganism center (abbreviation CGMCC), depositary institution address are:Yard 1, BeiChen xi Road, Chaoyang District, Beijing City 3, the Chinese Academy of Sciences Institute of microbiology, preservation registration number are CGMCC No.14109, and the Classification And Nomenclature of the bacterial strain is lactobacillus gasseri (Lactobacillus gasseri)。
Embodiment 3 (lactobacillus gasseri RD-0046 metabolites measure)
1. lactic acid content measures in lactobacillus gasseri RD-0046 metabolites:Using high-efficient liquid phase technique (0.005M sulfuric acid water (0.28ml sulfuric acid (98%) -1000ml water, pH are about that 2.1) lactic acid of this strain culturing 24-48h zymotic fluids is examined to solution Survey, as a result indicate that lactic acid (L/D lactic acid summation) is about 35mg/mL, far above commercially available Lactobacillus delbrueckii (about 15mg/mL) and often The lactic acid content of lactobacillus gasseri is advised, lactate detection collection of illustrative plates of the invention is referring to attached drawing 4
2. content of hydrogen peroxide measures in lactobacillus gasseri RD-0046 metabolites:By the peroxide of Mcgroarty etc. Enzyme process carries out hydrogen peroxide semiquantitative determination, and the lactobacillus gasseri RD-0046 of separated identification is inoculated in H2O2Identification of M RS- TMB tablets, after 37 DEG C of Anaerobic culturel 24h, take out tablet, expose thalline in atmosphere.Produce H2O2Lactobacillus bacterium colony will be changed into blue Color, without producing H2O2Bacterium colony is non-discolouring, the H according to Coloring Time to generation2O2Sxemiquantitative is carried out, the result is shown in Fig. 5,5min in figure When bacterium colony have obvious blue and show, a large amount of bluenesss are obvious during 10min occurs, it is clear that this bacterium is easy to produce hydrogen peroxide, production Hydrogen peroxide is very capable, these results suggest that this lactobacillus gasseri RD-0046 can produce lactic acid and hydrogen peroxide, helps to tie up Hold microecology in vaginas balance.
Embodiment 4 (antibiotic sensitivity test)
According to the requirement of antibiotic susceptibility test in the 3rd Tiny ecosystem viable bacteria product introduction of version pharmacopeia in 2010, use AGP test paper disk method measures the sensitiveness of strains, investigated for 0 generation and passes on RD-0046 pairs of the lactobacillus gasseri in 30 generations The sensitiveness of each antibiotic, judges strains sensitiveness rank, the measurement result such as institute of table 3 according to the size of inhibition zone Show:
The antibiotic sensitivity test result of 3 lactobacillus gasseri RD0046 of table
Inhibition zone is determined as slight sensitive less than 10mm, is medium sensitivity in 10-20mm, is sensitivity more than 20mm.
Experimental data shows this bacterium to bacitracin, fleraxacin slight sensitive, to oxacillin, kanamycins clindamycin With gentamicin medium sensitivity, to ampicillin, benzyl penicillin, tetracycline, erythromycin, Piperacillin, ceftriaxone, mould through the ages Element, amoxicillin/clavulanate, azithromycin, Amoxicillin, SM 7338 are sensitive.
Attached drawing 6. wherein is shown in the antibiotic sensitive figure of kanamycins, fleraxacin and amoxicillin/clavulanate
Embodiment 5 (toxicity test)
5 SPF grades of Kunming mouses, lactobacillus gasseri RD-0046 suspended bacterias fresh every mouse peritoneal injection 0.3ml Liquid (is more than 1 × 109CFU/ mouse).By 2015 editions Chinese Pharmacopoeia requirements, every mouse weight is measured daily, and is observed, recorded The change such as the front and rear behavior of every mouse injection and physiology.All the weight of animals have increase in the results show 7 days, have no obvious Poisoning symptom, crawler behavior is without exception, no animal dead, it is believed that the bacterial strain belongs to non-toxic type bacterial strain.
Embodiment 6 (test of lactobacillus gasseri RD-0046 mitotic stabilities)
The present embodiment is from growth characteristics, morphology, Biochemical Characteristics, metabolin component, antibiotic sensitive characteristic, hereditary capacity And toxotest etc. has carried out this lactobacillus gasseri bacterial strain RD-0046 the study on the stability of passage 30 generations (C30).
1st, lactobacillus gasseri RD-0046 isolate and purify, colony morphological observation, dyeing microscopic examination and biochemical characteristic detection method it is same The Part I of embodiment 1 and embodiment 2.The result shows that:By passage, colonial morphology is shown in for circle, neat in edge, surface light Sliding, more flat, translucent, passage is stablized;Gram's staining is rendered as Gram-positive bacillus, and dyeing microscopic examination photo does not have with 0 generation Change.
2nd, Genetic Analysis:Part II of the method with embodiment 2.Respectively to the 0th generation of lactobacillus gasseri RD-0046 (C0), the 30th generation (C30) bacterial strain carries out 16SrDNA fragment PCR amplifications, and pcr amplification product electrophoretic analysis, purpose band is clear And it is single, size is about 1500bp, and amplification is correct, and C0, C30 twice PCR amplification are consistent, will measure sequence and uses in NCBI BLAST instruments be compared with the known array in GenBank databases, be lactobacillus gasseri, homology similarity 100%.
3rd, metabolite measures:Method is each with embodiment 3, Plasma lactate content about 35mg/mL, hydrogen peroxide experiment display Occurs blueness in 5min for bacterium colony, a large amount of bluenesss are obvious during 10min occurs, it was demonstrated that bacterial strain metabolism produces hydrogen peroxide Ability and lactic acid producing ability are stablized.
4th, antibiotic sensitivity test:Method is with embodiment 4, using using AGP test paper disk method measure strains Sensitiveness, judge the strain of this lactobacillus gasseri to bacitracin, fluorine sieve according to the scope of restraining fungi criteria for interpretation of paper disc method Husky star slight sensitive, to oxacillin, kanamycins clindamycin and gentamicin medium sensitivity, to ampicillin, penicillin G, tetracycline, erythromycin, Piperacillin, ceftriaxone, vancomycin, amoxicillin/clavulanate, azithromycin, A Moxi Woods, SM 7338 are sensitive.
5th, toxicity test:Method with embodiment 5, with mouse peritoneal injection to the C0 of this lactobacillus gasseri RD-0046, C30, for bacterial strain carried out toxotest, wherein, the concentration > 10 of test9CFU/ mouse.As a result it is:Whole test mices 7 days Poisoning symptom is inside showed no, weight has increase, no animal dead.According to the above results, press《New drug pharmacology, toxicological study skill Art requires supplementary notes》, which belongs to non-toxic type bacterial strain.
Comprehensive, the present embodiment repeatedly passes on lactobacillus gasseri RD-0046 with MRS medium cultures, from morphology, biochemistry Learn, metabolin feature and hereditary capacity, susceptibility characteristic, toxicity test etc. have inquired into the numerous shadow planted to lactobacillus gasseri of passage Ring.The result shows that:With MRS subcultures within 30 generations its morphology, biochemical, hereditary capacity, metabolin and susceptibility characteristic It is consistent with initial separation bacterial strain.
Embodiment 7 (lactobacillus gasseri RD-0046 bacterial strains pharmacodynamic experiment)
First, lactobacillus gasseri RD-0046 bacterial strains antibacterial experiment in vitro
(1) lactobacillus gasseri RD-0046 and Lactobacillus delbrueckii suppress the experiment of gardnerella vaginalis in vitro:Connect according to 3% Kind concentration prepares the MRS agar bacteria cakes of lactobacillus gasseri RD-0046, and the Anaerobic culturel 24h at 37 DEG C, commercially available De Shi is prepared with method Lactobacillus bacteria cake;100 μ L of gardnerella vaginalis are taken, is inoculated in 10mL BHI solid mediums, is put into lactobacillus gasseri RD- 0046 and Lactobacillus delbrueckii bacteria cake, 37 DEG C of Anaerobic culturel 48h;Obvious inhibition zone occurs around lactobacillus.The result is shown in Fig. 7, its Middle left figure is lactobacillus gasseri RD-0046 inhibition zone effects, and vernier caliper measurement antibacterial circle diameter is 30.7mm, right figure De Shi Lactobacillus inhibition zone effect, bacteriostatic diameter 24.6mm, conclusion are lactobacillus gasseri RD-0046 to the antibacterial of gardnerella vaginalis Effect is better than Lactobacillus delbrueckii.
(2) lactobacillus gasseri RD-0046 and Lactobacillus delbrueckii suppress the experiment of aerobic pathogenic bacteria in vitro:According to 3% inoculation Concentration prepares the MRS agar bacteria cakes of lactobacillus gasseri RD-0046, and the Anaerobic culturel 24h at 37 DEG C, commercially available De Shi breasts are prepared with method Bacillus bacteria cake;By staphylococcus aureus, escherichia coli, pseudomonas aeruginosa and salmonella are seeded in pancreas junket soya peptone Liquid (TSB) agar medium, is put into lactobacillus gasseri RD-0046 and Lactobacillus delbrueckii bacteria cake.18-24h is cultivated in 33 DEG C, is seen Inhibition zone is examined, vernier caliper measurement RD-0046 antibacterial circle diameters are about 235mm, and right figure is Lactobacillus delbrueckii inhibition zone effect, suppression The a diameter of 15.3mm of bacterium, conclusion are false single to staphylococcus aureus, escherichia coli, verdigris for lactobacillus gasseri RD-0046 The fungistatic effect of born of the same parents bacterium and salmonella is better than Lactobacillus delbrueckii, and representative diagram is shown in attached drawing 8-9
2nd, adhesive forces are tested:According to the lactobacillus number being attached on vaginal epithelial cell monolayer, determine not With the Adhesion property of lactobacillus.Method is as follows:Take human vagina epithelial cell Vk2/E6E7 and human cervical cancer epithelial cell Hela, cell is inoculated in 12 orifice plates with 500,000 per the density in holes, when 48 is small after VK2/E6E7 form monolayer; Commercially available lactobacillus (Lactobacillus delbrueckii) and lactobacillus gasseri RD-0046 are separately added into the CFU of varying number per hole, adhesion 4 is small When, gently vibrated on shaking table in adhesion process, each group is respectively equipped with two parallel laboratory tests;After adhesion, 1ml is used 0.05%tritonX-100 cell lysis, is made suspension bacteria liquid, and dilution, takes 100ul bacterium solutions to be equably inoculated in MRS fine jades respectively On fat culture medium flat plate;After when Anaerobic culturel 48 is small, clone's number of each tablet is counted.
The results show:The 4h adherence rates of lactobacillus gasseri RD-0046 are respectively 42.4% and 48.2%, commercially available similar De Shi Lactobacillus strain 4h adherence rates are respectively 11.8% and 17.3%, and the adhesive force of lactobacillus gasseri RD-0046 is higher than commercially available similar Lactobacillus Lactobacillus delbrueckii bacterial strain.
3rd, rabbit vagina field planting experiment
1st, experimental method
4 healthy animals of selection carry out stratified random packet by weight, are divided into 2 groups, positive controls animal 2, tests Group 2:
Field planting is prepared with lactobacillus gasseri RD-0046:The freeze-drying bacterium powder of lactobacillus gasseri RD-0046 is weighed, it is fixed to make Plant amount is 106.Control group uses listing product (Lactobacillus delbrueckii capsule), each to add MRS fluid nutrient mediums under aseptic technique 0.5mL, is uniformly mixed, and vagina is implanted into after all being drawn with vaginal administration device.
It is colonized modeling and sampling:After the monkey menstruation of normal menstrual cycle can be observed, continuous 7 days implantation modeling bacterium. The vagina of animal is once observed weekly, checks the color of vaginal fluid, character and secretory volume and measure vaginal secretion Thing pH, takes 2 aseptic cotton carrier samplings, wherein a cotton swab is used for vaginal fluid cleannes microscopy, another cotton swab is used for bacterium Cluster analysis.
The separation and purifying culture of vagina bacterium:By the vaginal fluid of collection, vibrated in 2mL D-Hanks buffer solutions, Gradient dilution is done with phosphate buffer, is respectively coated on MRS agar plates and at 37 DEG C, under anaerobic condition cultivate 24~ 48h.The information such as record colonial morphology, MRS agar plates of ruling again are with the bacterium colony that is purified and carry out biochemical and molecule and reflect It is fixed.
Molecular biology method identifies (16SrDNA gene sequencings):The separated bacterial strain being purified into is carried out Sequence amplification, sequencing and the analysis of 16SrDNA, gel extraction method pair is used by the pcr amplification product for being accredited as 16SrDNA fragments Purpose fragment is sequenced after purification.The 16SrDNA gene orders measured are used into the BLAST instruments and GenBank in NCBI Known array in database is compared, and is greater than or equal to 99% when comparing homology, is then accredited as same species.
2nd, experimental result and analysis
Vagina mucosa and secretion overview:Observed once weekly after implantation, it turns out that all experimental animal vaginas Mucosal secretions do not find obvious exception.
Vaginal fluid pH value measures:After lactobacillus gasseri RD-0046 implantation, most of test group of animals vaginal secretion Thing pH value is significantly lower than listing product control group, and relative to being decreased obviously before implantation, pH value measurement result is as shown in table 4.
4 lactobacillus gasseri RD-0046 of table influences result of the test to experimental animal vaginal fluid pH
Vaginal fluid cleannes:Compared before and after implantation, control group vagina miscellaneous bacteria quantity substantially increases, and cleannes reduce; And experimental group lactobacillus gasseri RD-0046 implantation after, vaginal fluid cleannes are substantially better than control group, it is seen that quantity is not Deng Gram-positive bacterium vaginae, cleannes are apparently higher than control group.Vaginal fluid cleannes judge the result such as institute of table 5 Show.
5 lactobacillus gasseri RD-0046 of table influences result of the test to experimental animal vaginal fluid cleannes
I~III is clean-up performance, and III represents that cleanliness factor is minimum.
Experimental group secretion is carried out amplification to isolate and purify, is analyzed by vaginal flora, from the whole 3 animal the moon of experimental group Found in road secretion for examination lactobacillus gasseri RD-0046, the information for examination lactobacillus gasseri RD-0046 isolated is as schemed Shown in 10.It is seen that found in animal subject vaginal fluid for examination lactobacillus gasseri RD-0046, therefore can be with Find out that lactobacillus gasseri RD-0046 can effectively be colonized in Chinese machin intravaginal.
Embodiment 8 (lactobacillus gasseri RD-0046 freezes preservation and freeze-dried powder stability)
In order to detect survival rates of the lactobacillus gasseri RD-0046 in the case of fermenting and is lyophilized, by lactobacillus gasseri RD- 0046 grows in the modified MRS culture medium of pH 6.5, uses the ferment tank of 100 liters of scales.In plateau harvested earlier Thalline, its viable count reach about 3 × 109CFU/ml.Thalline is collected by centrifuging, after being washed with phosphate buffer, with jelly Dry protective agent (including skimmed milk power and sucrose etc.) mixing.Then, mixture is placed in freeze drier and be freeze-dried.Sample Freezed at -40 DEG C about 2 it is small when, be then dried in vacuo at -20 DEG C 20-30 it is small when, then when 30 DEG C of dry 3-5 are small.Dry powder Dispensed in the aluminium foil bag for being put into drier, and be stored in 4 DEG C and room temperature (25 DEG C).Pass through tablet meter in the 0th, 1,2,3,6, December Number measure viable count.
Initial every gram of dry powder of lactobacillus gasseri RD-0046 contains up to 75,000,000,000 viable bacterias (7.5 × 1010Cfu/g), in 2-8 There is optimal storage stability at DEG C.After being stored 6 months at 2-8 DEG C, retain the 77.3% of initial viable count, be shown in Table 6.
6 lactobacillus gasseri RD-0046 freeze-dried powder microbial inoculum stability test results of table
The embodiment of the present invention is described in detail above, but the content is only presently preferred embodiments of the present invention, It is not intended to limit the invention.All all any modification, equivalent and improvement done in the application range of the present invention etc., should all Within protection scope of the present invention.
Sequence table
<110>Zhao Xiangjiang
<120>A kind of Lactobacillus rhamnosus and its application for being used to prepare vagina antibacterial medicines
<160> 1
<170> SIPOSequenceListing 1.0
<210> 1
<211> 1506
<212> DNA
<213>Lactobacillus rhamnosus (Lactobacillus rhamnosus)
<400> 1
aatttttgtc caccttagac ggctcgctcc ctaaaagggt tacgccaccg gcttcgggtg 60
ttacaaactc tcatggtgtg acgggcggtg tgtacaaggc ccgggaacgt attcaccgcg 120
gcgtgctgat ccgcgattac tagcgattcc gacttcgtgt aggcgagttg cagcctacag 180
tccgaactga gaatggcttt aagagattag cttgacctcg cggtctcgca actcgttgta 240
ccatccattg tagcacgtgt gtagcccagg tcataagggg catgatgatt tgacgtcatc 300
cccaccttcc tccggtttgt caccggcagt cttactagag tgcccaacta aatgctggca 360
actagtcata agggttgcgc tcgttgcggg acttaaccca acatctcacg acacgagctg 420
acgacaacca tgcaccacct gtcattttgc ccccgaaggg gaaacctgat ctctcaggtg 480
atcaaaagat gtcaagacct ggtaaggttc ttcgcgttgc ttcgaattaa accacatgct 540
ccaccgcttg tgcgggcccc cgtcaattcc tttgagtttc aaccttgcgg tcgtactccc 600
caggcggaat gcttaatgcg ttagctgcgg cactgaaggg cggaaaccct ccaacaccta 660
gcattcatcg tttacggcat ggactaccag ggtatctaat cctgttcgct acccatgctt 720
tcgagcctca gcgtcagtta cagaccagac agccgccttc gccactggtg ttcttccata 780
tatctacgca tttcaccgct acacatggag ttccactgtc ctcttctgca ctcaagtttc 840
ccagtttccg atgcacttcc tcggttaagc cgagggcttt cacatcagac ttaaaaaacc 900
gcctgcgctc gctttacgcc caataaatcc ggataacgct tgccacctac gtattaccgc 960
ggctgctggc acgtagttag ccgtggcttt ctggttggat accgtcacgc cgacaacagt 1020
tactctgccg accattcttc tccaacaaca gagttttacg acccgaaagc cttcttcact 1080
cacgcggcgt tgctccatca gacttgcgtc cattgtggaa gattccctac tgctgcctcc 1140
cgtaggagtt tgggccgtgt ctcagtccca atgtggccga tcaacctctc agttcggcta 1200
cgtatcattg ccttggtgag ccgttacctc accaactagc taatacgccg cgggtccatc 1260
caaaagcgat agcttacgcc atctttcagc caagaaccat gcggttcttg gatttatgcg 1320
gtattagcat ctgtttccaa atgttatccc ccacttaagg gcaggttacc cacgtgttac 1380
tcacccgtcc gccactcgtt caaaattaaa tcaagatgca agcacctttc aataatcaga 1440
actcgttcga cttgcatgta ttaggcacgc cgccagcgtt catcctgacc agaaaaaaaa 1500
actcat 1506

Claims (9)

1. a kind of lactobacillus gasseri, its deposit number is CGMCC No.14109.
2. a kind of DNA molecular, it is characterised in that the DNA molecular extracts from lactobacillus gasseri described in claim 1, using it as mould Version is expanded using 16s-rDNA universal primers, amplified production sequence and lactobacillus gasseri base sequence two in GenBank databases Person's homology is more than 98%.
3. lactobacillus gasseri described in claim 1 is used to prepare the application of vaginal pathogenic antibacterial medicines.
4. application according to claim 3, it is characterised in that the medicine is microbial inoculum, which colonizes in vaginal environment And survive on vaginal epithelial cell.
5. application according to claim 3, it is characterised in that the medicine is microbial inoculum, which is metabolized in vaginal environment Produce H2O2
6. application according to claim 3, it is characterised in that the pathogenic bacteria are Gardnerella vaginalis or atropic ripple bacterium.
7. application according to claim 3, it is characterised in that the pathogenic bacteria are Candida albicans, Staphylococcus aureus Bacterium, escherichia coli, pseudomonas aeruginosa or salmonella.
8. lactobacillus gasseri described in claim 1 is used to prepare vaginal disease prevention or the application of medicine.
9. application according to claim 8, it is characterised in that the vaginal disease is vulvovaginal candidiasis, drop Worm property vaginitis, senile vahinitis, non-specific vagina infection or Combination vagina infection.
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CN109402002A (en) * 2018-11-01 2019-03-01 南京工业大学 Lactobacillus gasseri and application thereof in preparation of premature delivery prevention medicine
CN110016442A (en) * 2019-02-21 2019-07-16 河北一然生物科技有限公司 The application of Lactobacillus rhamnosus and its composite bacterium powder in prevention and treatment vaginitis product
CN110540945A (en) * 2018-05-29 2019-12-06 广东强基药业有限公司 lactobacillus jensenii and application thereof in preparation of vaginal antibacterial drugs
CN110538201A (en) * 2018-05-28 2019-12-06 赵湘江 Lactobacillus composition and application thereof
CN111088178A (en) * 2018-10-23 2020-05-01 上海上药信谊药厂有限公司 Produce lactic acid and H2O2Lactobacillus and application thereof
CN111471623A (en) * 2020-04-21 2020-07-31 广东龙创基药业有限公司 Composition of three lactobacilli and application thereof
WO2021027740A1 (en) 2019-08-09 2021-02-18 四川厌氧生物科技有限责任公司 Multi-lactobacillus composition and application thereof to vaginal health of females
CN112458006A (en) * 2020-11-10 2021-03-09 深圳华大生命科学研究院 Lactobacillus gasseri for the prevention and/or treatment of diseases associated with disturbances of the genital flora
CN113862188A (en) * 2021-10-15 2021-12-31 广东一元兰欣生物科技有限公司 Lactobacillus gasseri LS03 and application thereof
CN114214256A (en) * 2022-01-12 2022-03-22 哈尔滨美华生物技术股份有限公司 Lactobacillus gasseri for preventing and treating urogenital infection and application thereof
CN114250186A (en) * 2022-01-05 2022-03-29 江南大学 Lactobacillus gasseri for relieving bacterial vaginitis and application thereof
CN114350560A (en) * 2022-01-05 2022-04-15 江南大学 Lactobacillus paracasei for inhibiting growth and biomembrane of gardnerella vaginalis and producing hydrogen peroxide at high yield
CN116948922A (en) * 2023-09-20 2023-10-27 杭州微致生物科技有限公司 Lactobacillus gasseri VB247 and application thereof
CN117327628A (en) * 2023-11-16 2024-01-02 江苏科荣生物医药有限公司 Lactobacillus gasseri Mia capable of fermenting Chinese herbal medicine and resisting HPV virus and application thereof
CN117535207A (en) * 2024-01-04 2024-02-09 四川厌氧生物科技有限责任公司 Lactobacillus gasseri and application thereof
CN118109375A (en) * 2024-04-30 2024-05-31 善恩康生物科技(苏州)有限公司 Lactobacillus gasseri JM6 and application thereof in vaginitis
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CN110540945A (en) * 2018-05-29 2019-12-06 广东强基药业有限公司 lactobacillus jensenii and application thereof in preparation of vaginal antibacterial drugs
CN111088178A (en) * 2018-10-23 2020-05-01 上海上药信谊药厂有限公司 Produce lactic acid and H2O2Lactobacillus and application thereof
CN111088178B (en) * 2018-10-23 2022-11-22 上海上药信谊药厂有限公司 Produce lactic acid and H 2 O 2 Lactobacillus and application thereof
CN109402002A (en) * 2018-11-01 2019-03-01 南京工业大学 Lactobacillus gasseri and application thereof in preparation of premature delivery prevention medicine
CN110016442A (en) * 2019-02-21 2019-07-16 河北一然生物科技有限公司 The application of Lactobacillus rhamnosus and its composite bacterium powder in prevention and treatment vaginitis product
WO2021027740A1 (en) 2019-08-09 2021-02-18 四川厌氧生物科技有限责任公司 Multi-lactobacillus composition and application thereof to vaginal health of females
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WO2022100633A1 (en) * 2020-11-10 2022-05-19 深圳华大生命科学研究院 Lactobacillus gasseri for prevention and/or treatment of reproductive tract flora disorder-related diseases
CN112458006A (en) * 2020-11-10 2021-03-09 深圳华大生命科学研究院 Lactobacillus gasseri for the prevention and/or treatment of diseases associated with disturbances of the genital flora
CN113862188A (en) * 2021-10-15 2021-12-31 广东一元兰欣生物科技有限公司 Lactobacillus gasseri LS03 and application thereof
CN114250186A (en) * 2022-01-05 2022-03-29 江南大学 Lactobacillus gasseri for relieving bacterial vaginitis and application thereof
CN114350560A (en) * 2022-01-05 2022-04-15 江南大学 Lactobacillus paracasei for inhibiting growth and biomembrane of gardnerella vaginalis and producing hydrogen peroxide at high yield
CN114350560B (en) * 2022-01-05 2023-07-04 江南大学 Lactobacillus paracasei capable of inhibiting growth and biomembrane of gardnerella vaginalis and producing hydrogen peroxide
CN114214256B (en) * 2022-01-12 2022-06-28 哈尔滨美华生物技术股份有限公司 Lactobacillus gasseri for preventing and treating urogenital infection and application thereof
CN114214256A (en) * 2022-01-12 2022-03-22 哈尔滨美华生物技术股份有限公司 Lactobacillus gasseri for preventing and treating urogenital infection and application thereof
WO2024146601A1 (en) * 2023-01-06 2024-07-11 上海上药信谊药厂有限公司 Lactobacillus gasseri and use thereof
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