JP4189026B2 - 抗生物質107891、そのa1及びa2因子、薬学的に許容されるその塩及び組成物、並びにその使用 - Google Patents
抗生物質107891、そのa1及びa2因子、薬学的に許容されるその塩及び組成物、並びにその使用 Download PDFInfo
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- JP4189026B2 JP4189026B2 JP2007551240A JP2007551240A JP4189026B2 JP 4189026 B2 JP4189026 B2 JP 4189026B2 JP 2007551240 A JP2007551240 A JP 2007551240A JP 2007551240 A JP2007551240 A JP 2007551240A JP 4189026 B2 JP4189026 B2 JP 4189026B2
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- DPJRMOMPQZCRJU-UHFFFAOYSA-M thiamine hydrochloride Chemical compound Cl.[Cl-].CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N DPJRMOMPQZCRJU-UHFFFAOYSA-M 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
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- Life Sciences & Earth Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
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- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Peptides Or Proteins (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
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Description
Microbispora sp.107891は、環境中で単離されて、2003年2月27日にブダペスト条約の規定の下で米国20110−2209、バージニア州、Manassas市、University Blvd、10801、アメリカンタイプカルチャーコレクション(American Type Culture Collection)(ATCC)に寄託された。該菌株は寄託番号PTA−5024が与えられた。
Microbispora sp.ATCC PTA−5024は、種々の標準の固体培地でよく増殖する。微細な寸法は、1ml/lのビタミン溶液(チアミン塩酸塩25mg/l、パントテン酸カルシウム250mg/l、ニコチン酸250mg/l、ビオチン0.5mg/l、リボフラビン1.25g/l、シアノコバラミン6.25mg/l、パラアミノ安息香酸25mg/l、葉酸500mg/l、塩酸ピリドキサール500mg/l)が添加されたフミン酸−Trace Salts Agar(g/lでの組成:フミン酸0.5、FeSO4・7H2O 0.001、MnCl2・4H2O 0.001、ZnSO4・7H2O 0.001、NiSO4・6H2O 0.001、MOPS 2、寒天20)上で増殖された培養物を用いて測定された。
Microbispora sp.ATCC PTA−5024を、AF/MS液体培地(実施例1を参照されたい)で28℃及び200rpmにおいて6日間増殖し、次いで新しいAF/MS液体培地に移し(5%接種材料)、更に6日間培養して、最終的に100mlのV6液体培地(実施例1を参照されたい)中に接種した(7%接種材料)。28℃及び200rpmでの培養の6日後に、菌糸体を遠心分離で回収し、無菌食塩水で3度洗浄し、次いで希釈して適切な接種材料を得た。懸濁液のアリコットを、Shirling及びGottlieb(E.B.Shirling and D.Gottlieb,(1966):“Method for Characterization of Streptomyces species”,Int.J.Syst.Bacteriol.16:313−340)によって推奨された種々の培地、及びS.A.Waksman(1961):“The Actinomycetes”,The Williams and Wilkins Co.,Baltimore.Vol.2:328−334によって推奨された培地にクロスハッチング式に(cross−hatched manner)すじをつけて(streak)接種した。
Microbispora sp.ATCC PTA−5024を、GYM培地(グルコース4g/l、酵母エキス4g/l、麦芽エキス10g/l)中28℃において回転式振盪機で増殖し、菌糸体を回収し、無菌蒸留水で2度洗浄し次いで凍結乾燥した。アミノ酸の分析が、Staneck及びRoberts(J.L.Staneck and G.D.Roberts,(1974):“Simplified approach to identification of aerobic actinomycetes by thin−layer chromatography”,Appl.Microbiol.28:226−231)の方法に従って実施された。メナキノン及び極性脂質が、Minnikin他(D.E.Minnikin,A.G.O’Donnell,M.Goodfellow.,G.Alderson,M.Athalye,A.Schaal and J.H.Parlett,(1984):“An integrated procedure of isoprenoid quinones and polar lipids”,J.Microbiol.Meth.2:233−241)の手順に従って抽出された。極性脂質が、薄層クロマトグラフィーによって分析され(D.E.Minnikin,V.Patel,L.Alshamaony,and M.Goodfellow,(1977):“Polar lipid composition in the classification of Nocardia and related bacteria”,Int.J.Syst.Bacteriol.27:104−117)、メナキノンが、HPLCによって分析され(R.M.Kroppenstedt,(1982):“Separation of bacterial menaquinones by HPLC using reverse phase RP18 and a silver loaded ion exchanger as stationary phase”,J.Liquid.Chromat.5:2359−2367;R.M.Kroppenstedt,(1985):“Fatty acid and menaquinone analysis of actinomycetes and related organisms”,in:Chemical Methods in Bacterial Systematics.No20 SAB Technical Series pp.173−199,M.Goodfellow and D.E.Minnikin eds,Academic Press,London)、脂肪酸メチルエステルが、ガス液体クロマトグラフィーによってそれぞれ分析された(L.T.Miller,(1982):“A single derivatization method for bacterial fatty acid methyl esters including hydroxy acids”,J.Clin.Microbiol.16:584−586;M.Sasser,(1990):“Identification of bacteria by gas chromatography of cellular fatty acids”,USFCC News Letters 20:1−6)。ミコール酸の存在は、Minnikin他(D.E.Minnikin,L.Alshamaony,and M.Goodfellow,(1975):“Differentiation of Mycobacterium,Nocardia and related taxa by thin layer chromatographic analysis of whole organism methanolyzates”,.J.Gen.Microbiol.88:200−204)の方法によって確かめられた。
Microbispora sp.ATCC PTA−5024株の全rRNAの95%に相当する、16 rRNA遺伝子(16S rDNA)の部分配列、即ち1443ヌクレオチドは、公開された手順に従って達成された(P.Mazza,P.Monciardini,L.Cavaletti,M.Sosio and S.Donadio,(2003):“Diversity of Actinoplanes and related genera isolated from an Italian soil”,Microbial Ecol.5:362−372)。それは配列番号1に報告された。この配列は、米国特許第6551591B1号に報告されたように菌株Microbispora corallina NRRL 30420(MF−BA−1768)の配列と比較された。これら2つの配列は整列され、差異は1456整列位置のうちの31で見出され、全体で2.13%の配列相違があった。97.5%未満の配列同一性を共有する任意の2つの菌株は、一般的に異なる種に属する(Stackebrandt,E.and Embley,M.T.(2000)“Diversity of Uncultered Microorganisms in the Environment”.In:Nonculturable Microorganisms in the Environment,R.R.Colwell and D.J.Grimes(eds).ASM,Press,Washington DC,pp.57−75)。従って、配列相違の2%レベルは、極めて高く(Rossello−Mora,R.,and Amann,R.(2001).“The Species Concept for Prokaryotes”.FEMS Microbiol.Rev.25:39−67)、Microbispora sp.ATCC PTA−5024とMicrobispora corallina NRRL 30420(MF−BA−1768)は異なる菌株であることを示している。
抗生物質107891を産生する菌株は、次の化学分類学的及び形態学的特徴によりストレプトスポランギアセアエ(Streptosporangiaceae)科、ミクロビスポラ(Microbispora)属に割り当てられる。
・細胞壁中のメソ−ジアミノピメリン酸の存在、
・多量のMK−9(III、VIII−H4)、及びLechevalier他(H.A.Lechevalier,C.De Brieve and M.P.Lechevalier,(1977):“Chemotaxonomy of aerobic actinomycetes:phospholipid composition”,Biochem.Syst.Ecol.5:246−260)によるリン脂質IV型、
・3cセンスクロッペンシュテッド(R.M.Kroppenstedt,(1992):“The genus Nocardiopsis”,in:The Prokariotes,Vol II,,pp.1139−1156,A.Balows,H.Truper,M.Dworkin,W.Harder and K.H.Schleifer eds;New York,Springer−Verlag)の脂肪酸プロフィール、
・ミコール酸の欠如、
・気中菌糸から側面に分岐する短い担胞子体の先端の特徴的な縦の胞子の組の形成。非運動性胞子、
・記載されたMicrobispora sp.からの16S rDNA配列に対して>97%の同一性を示す、配列番号1に報告された、全rRNAの95%に相当する、16 rRNA遺伝子(16S rDNA)の部分配列、即ち1443ヌクレオチド。
上記の通り、抗生物質107891は、菌糸体中と発酵ブロスのろ過画分中の両方に殆ど等しく配分されていることが見出される。
n−ブタノール、1−ペンタノール、2−ペンタノール、3−ペンタノール、1−ヘキサノール、2−ヘキサノール、3−ヘキサノール、3,3−ジメチル−1−ブタノール、4−メチル−1−ペンタノール、3−メチル−1−ペンタノール、2,2−ジメチル−3−ペンタノール、2,4−ジメチル−3−ペンタノール、4,4−ジメチル−2−ペンタノール、5−メチル−2−ヘキサノール、1−ヘプタノール、2−ヘプタノール、5−メチル−1−ヘキサノール、2−エチル−1−ヘキサノール、2−メチル−3−ヘキサノール、1−オクタノール、2−オクタノール、シクロペンタノール、2−シクロペンチルエタノール、3−シクロペンチル−1−プロパノール、シクロヘキサノール、シクロヘプタノール、シクロオクタノール、2,3−ジメチル−シクロヘキサノール、4−エチルシクロヘキサノール、シクロオクチルメタノール、6−メチル−5−ヘプテン−2−オル、1−ノナノール、2−ノナノール、1−デカノール、2−デカノール、及び3−デカノールなどの直鎖、分枝又は環状であってよい少なくとも4個の炭素原子のアルカノール;メチルイソプロピルケトン、メチルイソブチルケトン、メチル−n−アミルケトン、メチルイソアミルケトンなどの少なくとも5個の炭素原子のケトン、並びにそれらの混合物である。
抽出に続いて、相当量の水を含む有機相が回収される場合、それより水を共沸的に蒸発することが便利であるかもしれない。一般的に、このことは、最小の水との共沸混合物を形成することが可能な溶媒の添加、及びそれに続く必要ならば所望の産成物を析出させるための析出剤の添加を必要とする。最小の水との共沸混合物を形成することが可能な有機溶媒の代表例は、n−ブタノール、ベンゼン、トルエン、ブチルエーテル、四塩化炭素、クロロホルム、シクロヘキサン、2,5−ジメチルフラン、ヘキサン、及びm−キシレンであり、好ましい溶媒はn−ブタノールである。
抗生物質107891を回収するための好ましい一手順によれば、ろ過された発酵ブロスは、吸着マトリックスと接触させ、次いで極性の水混和性溶媒又はその混合物で溶離し、減圧下で油状の残渣に濃縮し、前述のタイプの析出剤で析出させることができる。
試料注入口条件:
シートガス(N2) 60psi(約413685Pa)、
補助ガス(N2) 5psi(約34474Pa)、
キャピラリー加熱器 250℃
試料注入口電圧設定:
陽極性及び陰極性の両方、
イオンスプレイ電圧 +/−5kV、
キャピラリー電圧 +/−19V
走査条件:最大イオン時間 200ms、
イオン時間 5ms、
フルミクロスキャン 3、
セグメント:持続時間 30min、スキャンイベントポジティブ(150〜2000m/z)及びネガティブ(150〜2000m/z)
A1因子は、DMSO:ギ酸 95:5(v/v)中に溶解された精製された抗生物質107891複合体から、流速3.5mlにおける30%から45%のB相の25分線形勾配溶離を用いて、Symmetry Prep.C18カラム上で分離され精製された。
抗生物質107891複合体、そのA1及びA2因子、並びに前記因子の任意の比率の混合物は、そのまま又は薬学的に許容される担体と混合して投与することができ、ペニシリン、セファロスポリン、アミノグリコシド及びグリコペプチドなどの他の抗菌剤と併せて投与することもできる。
A)質量分析:
Thermofinnigan較正ミックス(calibration mix)を用いた、エレクトロスプレイ源を備えたThermofinnigan LCQ deca装置上のMS実験においては、抗生物質107891は、2つの二重にプロトン化されたイオンを、複合体A1因子とA2因子の最も低い同位体組成にそれぞれ対応するm/z=1124とm/z=1116において示す。エレクトロスプレイ条件は、スプレイ電圧4.7kV、キャピラリー温度220℃、キャピラリー電圧3V、注入モード 10μl/分であった。スペクトルは、トリフルオロ酢酸0.1%を含むメタノール/水80/20(v/v)中の0.2mg/ml溶液から記録され、図1A(完全走査低解像度スペクトル)及び1B(拡大高解像度スペクトル)に示される。
メタノール−d4:H2O(0.01N HCl)40:10(v/v)中に溶解された抗生物質107891の1H−NMRスペクトルは、600MHzにおいてMeOH−d4を内部標準(3.31ppm)として用いて次のシグナルのグループ(ppmで)を示す[δ=ppm、多重度(帰属)]:0.93d(CH3)、0.98d(CH3)、1.07t(重複CH3)、1.18t(重複CH3)、1.26s(CH3)、1.30t(重複CH3)、1.62〜1.74m(CH2)、1.78d(CH3)、1.80d(CH3)、2.03m(CH2)、2.24m(CH)、2.36m(CH2)、2.72〜3.8m(ペプチド性アルファCH)、3.8〜5.2m(ペプチド性アルファCH)、5.53〜6.08s(CH2)、5.62d(CH二重結合)、6.42m(CH)、6.92d(CH二重結合)、7.0〜7.55m(芳香族CH)、7.62〜10.4d及びm(芳香族及びペプチド性NH)。
A)抗生物質107891複合体中の「耐酸性」アミノ酸の決定
抗生物質107891が完全な酸加水分解(HCl 6N、105℃、24時間)にかけられ、酸処理に耐性がある抗生物質のアミノ酸成分が同定された。酸に不安定なアミノ酸はこの手法で検知できない。加水分解物は、適切な誘電体化の後に、同様に誘電体化された標準のアミノ酸の混合物と比較して、HPLC−MS及びGC−MS分析によって研究された。HPLC分析については、加水分解された試料は、6−アミノキノリル−N−ヒドロキシスクシンイミジルカルバメート(AccQ−Tag(商標)Fluor試薬キット)で処理され、GC分析については、無水メタノール及びトリフルオロ酢酸無水物中の3N HClの混合物で処理された。
HPLC法は次の条件を有した。
カラム:AccQ−Tag(商標)(Waters C18 NovoPak 4μm 3.9×150mm)
カラム温度:37℃
流速:1mL/分
A相:酢酸アンモニウム140mM pH5(酢酸)
B相:水:アセトニトリル60:40(v/v)
MS条件は次の通りである。
分光計:標準エレクトロスプレイ源を備えたFinnigan LCQ Deca
キャピラリー温度:250℃
供給源電圧:4.70KV
供給源電流:80μA
キャピラリー電圧:−15V
GC法は、次の条件を有した。
カラム:J & W Scientific DB−5、30m×0.254mm ID×0.25μm FT
キャリヤーガス:ヘリウム
注入モード:スプリットレス
注入温度:200℃
トランスファーライン温度:300℃
温度プログラム:2.5℃/分で50℃から100℃まで(10分)、10℃/分で100℃から250℃まで(15分)、250℃で15分
注入量:1μl
分光計:Finnigan TSQ700
イオン化モード:電子衝撃
電圧設定:
フィラメント電流:400mA
電子マルチプライヤ:1400V
電子エネルギー:70eV
陽イオンモード
走査条件:
走査範囲:40〜650amu
走査時間:1秒
カラム:Restek RTX−5MS、15m×0.25mm ID×0.25μm FT
キャリヤーガス:ヘリウム
インターフェース温度:250℃
温度プログラム:50℃で1.5分、20℃/分で50℃から100℃まで、100℃で1分、20℃/分で100℃から135℃まで、135℃で1分、20℃/分で135℃から250℃まで、250℃で1分
注入量:1μl
注射器:スプリットレスモード、基本温度50°C、トランスファー(transfer)温度 280°C、トランスファーレート 14.5°C/min
イオン化モード:電子衝撃
電圧設定:
フィラメント電流:149μA
電子マルチプライヤ:200V
電子エネルギー:70eV
陽イオンモード:
走査条件:
走査範囲:33〜500amu
走査時間:0.6秒
精製された107891複合体並びにその単一のA1及びA2因子の完全な加水分解が、Simpson RJ,Neuberger MR,Liu TY,“Complete Aminoacid Analysis of Proteins from a Single Hydrolysate”.Journal Biol.Chem(United States),April 10,1976,251(7),1936−40によって記載された方法に従って実施された。
Thermofinnigan較正ミックスを用いる、エレクトロスプレイ源を取り付けたThermofinnigan LCQ deca装置上のMS実験で、最低の同位体組成に対応して、抗生物質107891A1因子はm/z=1124において、A2因子はm/z1116において二重にプロトン化されたイオンを示す。エレクトロスプレイ条件は、スプレイ電圧:4.7kV、キャピラリー温度:250℃、キャピラリー電圧:8V、注入モード 10μl/分であった。スペクトルは、酢酸0.5%を含むアセトニトリル:水 50:50(v/v)中の0.1mg/ml溶液から記録され、図6A(完全走査低解像度スペクトル)及び6B(拡大走査高解像度スペクトル)及び図7A(完全走査低解像度スペクトル)及びB(拡大走査高解像度スペクトル)に報告されている。
A)米国特許第6551591B1号に記載されたMicrobispora corallina NNRL 30420(MF−BA−1768)は、NNRLコレクションから得られた。予備的な実験においては、M.corallina NNRL 30420(MF−BA−1768)株を米国特許第6551591B1号に記載された条件で三角フラスコ中で発酵した。回収されたブロスは、メタノールでの希釈によって抽出された。菌糸体の遠心分離後、上澄みをHP20ポリスチレン吸収樹脂に載せ、メタノール:水 70:30の混合物で溶離し、その溶離液を小容量にし、次いで凍結乾燥した。
単離された抗生物質MF−BA−1768α1及びMF−BA−1768β1のLC−MS分析が、Symmetry C18(5:m)3.9×20mm前置カラムを備えたSymmetry C18(5:m)4.6×250mm.カラム(Waters;Milford MA、USA)上(両方とも温度50℃でオーブン中に保たれた)で実施された。溶離は、次の多段階溶離プログラム、即ち時間=0分(B相30%)、時間=8分(B相30%)、時間=20分(B相45%)、時間=24分(B相90%)、及び時間=28分(B相90%)を用いて流速1ml/分で実施された。A相は、25mM HCOONH4緩衝液pH4.5:CH3CN 95:5(v/v)であり、B相はCH3CNであった。HPLC装置は、Finnigan LCQイオントラップ質量分析計(Thermoquest、Finnigan MAT、San Jose CA、USA)と連結された。カラムからの100μl/分の溶離液は、LCQ質量分析計のESIインターフェースに回された。MS分析が次の条件、即ち、試料注入口:シートガスフロー(N2)25psi(約172369Pa)、補助ガスフロー5psi(約34474Pa)、キャピラリー加熱器:210°C、試料注入口電圧極性 陽極及び陰極の両方、イオンスプレイ電圧:+/−4.75KV、キャピラリー電圧:+/−12V、走査条件:最大イオン時間50ms、フルミクロ:スキャン3で実施された。
抗生物質107891A1因子及びA2因子の1H−NMRスペクトルが、水抑制シーケンスを適用するBruker AMX 600分光計上でCD3CN:D2O(1:1)の混合物中298Kにおいて記録された。内部標準として1.94ppmにおけるアセトニトリル−d3の残留シグナルが考えられた。
CD3CN:D2O(1:1)中に溶解された抗生物質107891A1因子の1H NMRスペクトルは、600MHzにおいてCD3CNを内部標準(1.94ppm)として用いて次のシグナル群(ppmで)を示す[δ=ppm、多重度;(帰属)]:0.84d(CH3)、0.89d(CH3)、0.94t(重複したCH3)、1.1d(CH3)、1.13d(CH3)、1.15t(重複したCH3)、149m(CH2)、1.69d(CH3)、1.75m(CH2)、2.11m(CH)、2.26m(CH)、2.5m(CH2)、2.68〜3.8m(ペプチド性CHβ)、3.8〜5.0m(ペプチド性CHα)、5.45〜6.17s(CH2)、5.58d(CH二重結合)、6.36m(CH)、6.86d(CH二重結合)、7.0〜7.45m(芳香族CH)。不純物として、ジメチルスルホキシドのシグナルが2.58ppmに存在し、ホルメートのシグナルがまた8.33ppmに存在する。
CD3CN:D2O(1:1)中に溶解された抗生物質107891A2因子の1H NMRスペクトルは、600MHzにおいてCD3CNを内部標準(1.94ppm)として用いて次のシグナル群(ppmで)を示す[δ=ppm、多重度;(帰属)]:0.84d(CH3)、0.88d(CH3)、0.94d(CH3)、1.06d(CH3)、1.14d(CH3)、148m(CH2)、1.65〜1.75m(CH2)、1.67d(CH3)、2.15m(CH)、2.25m(CH)、2.5m(CH2)、2.77〜3.8m(ペプチド性CHβ)、3.8〜4.9m(ペプチド性CHα)、5.45〜6.14s(CH2)、5.59d(CH二重結合)、6.34m(CH)、6.84d(CH二重結合)、7.0〜7.42m(芳香族CH)。不純物として、ジメチルスルホキシドのシグナルが2.58ppmに存在し、ホルメートのシグナルがまた8.32ppmに存在する。
CD3CN:D2O(1:1)に溶解された抗生物質107891A1因子の13C−NMRスペクトルは、CD3CNを内部標準(1.39ppm)として使用して600MHzにおいて次のシグナル群(ppmで)を示す[δ=ppm;(帰属)]:13.6〜23.03(脂肪族CH3)、25.69〜77.9(脂肪族CH2及びペプチド性CHα)、105〜137.3(芳香族及び二重結合CH及び四級炭素)、165.6〜176.6(ペプチド性カルボニル)。
CD3CN:D2O(1:1)に溶解された抗生物質107891A2因子の13C−NMRスペクトルは、CD3CNを内部標準(1.39ppm)として使用して600MHzにおいて次のシグナル群(ppmで)を示す[δ=ppm;(帰属)]:13.6〜22.9(脂肪族CH3)、25.65〜73(脂肪族CH2及びペプチド性CHα)、105〜137.3(芳香族及び二重結合CH及び四級炭素)、165.7〜176.1(ペプチド性カルボニル)。
A)Brukerフーリエ変換赤外分光光度計IFS 48型でKBr中で記録された抗生物質107891A1因子の赤外スペクトルは、3294;3059;2926;1661;1529;1433;1407;1287;1114;1021に(cm−1)において吸収極大を示した。赤外スペクトルは図12に報告されている。
抗生物質107891の抗菌活性が、米国臨床研究所規格委員会の提案(NCCLS、文書M7−A5)によるブロス微量希釈法によって測定された。
使用された菌株は、臨床分離株、又はアメリカンタイプカルチャーコレクション(ATCC)からの菌株であった。試験の結果は表VIと表VIIに報告されている。
メチシリン耐性(MRSA)及びグリコペプチド中間体(GISA)耐性株を含めたStaphylococcus spp.に対するMIC範囲は、=0.13〜4μg/mlであり、最近の臨床分離株である、バンコマイシン耐性菌(VRE)を含めたEnterococcus spp.に対するMIC範囲は、0.5〜4μg/mlである。Streptococcus spp.に対しては、MICは≦0.13μg/mlである。
タイムキル(time−kill)実験においては、抗生物質107891は、S.aureus GISA及びE.faecalis VanA株に対して殺菌活性を示し、24時において殺菌濃度はMueller Hintonブロス中でMIC値である。
表VIIIは、抗生物質107891のA1及びA2因子の個々の抗菌活性を報告している。MICは、上記に記載された微量ブロス希釈法によって測定された。
23〜25gの体重の雌性ICRマウス(Harlan Italia SpA−S.Pietro al Natisone、イタリア)が、免疫応答性又は好中球減少性マウスの急性致死性感染症の実験に使用された。好中球減少症が、4日及び1日でそれぞれ200及び100mg/kgのシクロホスファミドの2種の腹腔内投与によって誘発された後、マウスが感染された。
Microbispora sp.ATCC PTA−5024株が、オートミール寒天斜面上に2〜3週間28℃で維持された。一斜面の微生物含有量が、5ml滅菌水でかき取られ、デキストロース20、酵母エキス2、大豆かす8、NaCl1、及び炭酸カルシウム4(g/l)から構成される100mlの種培地(AF/MS)を収容する500ml三角フラスコ中に接種された。培地は、蒸留水中で調製され、121℃での20分間の殺菌の前に、pHが7.3に調節された。接種されたフラスコは、28℃において200rpmで作動する回転式振とう機上で培養された。4〜6日後、この培養物の5%が、同じ発酵培地を収容する第二シリーズのフラスコ中に接種された。72時間のインキュベーションの後、200mlが3Lの同じ栄養培地を収容する4Lバイオリアクター中に移された。
Microbispora sp.ATCC PTA−5024が、グルコース10、マルトース10、ダイズ油10、ダイズ粉8、酵母エキス2及び炭酸カルシウム4g/lから構成される100mlの培養培地(G1)を収容する500ml三角フラスコ中に接種された。培地は脱イオン水中で調製され、pH調節することなく120℃×20分殺菌された。接種されたフラスコは、120〜168時間28℃において200rpmで撹拌しながら良好な増殖が観察されるまでインキュベートされた。このフラスコは次いで、実施例1に記載の通り構成された3Lの種培地AF/MSを収容する4Lバイオリアクターを接種(3%)するのに使用された。700rpmでの撹拌及び0.5vvmエアレーションを行いながらの30℃における120時間の発酵の後、1.5Lの培養物が、15Lの同じ栄養培地を収容する20Lバイオリアクターに移された。発酵は30℃において600rpmでの撹拌及び0.5vvmエアレーションを行いながら96時間実施され、次いで産生槽に移された。
実施例1に記載された発酵ブロスを、接線ろ過システム(tangential filtration system)(0.1μm細孔サイズ膜、Koch Carbo−Cor、Koch Wilmington、米国)によってろ過して170Lの上澄み及び30Lの濃縮された菌糸体を得た。抗生物質107891複合体が、ろ液(A)中及び菌糸体(B)中の両方で見出された。
実施例2に記載された200L槽発酵から回収されたブロスがpH6.8にされ、このブロスが接線ろ過(0.1μm細孔サイズ膜、Koch Carbo−Cor)によってろ過された。透過水(180L)がバッチ式に終夜室温で2LのDiaion HP20樹脂(三菱化学)と一緒に撹拌され、樹脂が次いで回収された。
実施例3に記載の通りに調製された粗抗生物質107891(3.6g)は、B−687グラジェントフォーマー(gradient former)、B−684フラクションコレクター(fraction collector)、B−685ガラスカラム70×460mmを備えたBuchi B−680中圧クロマトグラフィーシステム(Buchi laboratoriums−technik AG、Flawil、スイス)を使用することによって、100gの逆相C8(EC)40〜70μm粒子サイズ、60A細孔サイズ、IST(International Sorbent Technology、Mid−Glamorgan、英国)上の中圧クロマトグラフィーによって精製された。樹脂は、A相:B相 8:2(v/v)で先に調整され、次いで、60分でB相の20%から60%の60分線形勾配で25ml/分で溶離された。
抗生物質107891が、更に、B相の30%から45%の25分線形勾配溶離を用いて流速30ml/分でHibar prepacked lichrosorb RP8(7:m 粒子サイズ)カラムRT250〜25mm、Merck上の分取HPLCによって精製された。A相は、25mMギ酸アンモニウム緩衝液pH4.5:アセトニトリル 95:5(v/v)であり、B相は、アセトニトリルであった。
A1及びA2因子が、2つの異なる溶離プログラムを使用して、Symmetry Prep C18(7μm粒子サイズ)カラム7.8×300mm Waters(Mildfold、米国)上の分取HPLCによって実施例5の抗生物質107891複合体から分離され精製された。
Claims (13)
- R4、R5、R6、R7、及びR8がHである、請求項1に記載の化合物又は塩。
- R1がHであり、R2がHであり、R3がHである、請求項2に記載の化合物又は塩。
- R1がHであり、R2がHであり、R3がOHである、請求項2に記載の化合物又は塩。
- R1がHであり、R2がOHであり、R3がOHである、請求項2に記載の化合物又は塩。
- R1がOHであり、R2がOHであり、R3がOHである、請求項2に記載の化合物又は塩。
- R1がOHであり、R2がHであり、R3がHである、請求項2に記載の化合物又は塩。
- R1がOHであり、R2がHであり、R3がOHである、請求項2に記載の化合物又は塩。
- 請求項1〜8のいずれか1項に記載の化合物又は塩を含む医薬組成物。
- 薬学的に許容される担体を更に含む、請求項9に記載の医薬組成物。
- 薬剤としての使用するための、請求項1〜8のいずれか1項に記載の化合物又は塩。
- 細菌性感染症の治療又は予防のための、請求項9又は10に記載の医薬組成物。
- 動物成長促進剤として用いるための、請求項9又は10に記載の医薬組成物。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US11/035,296 US7319088B2 (en) | 2003-07-18 | 2005-01-12 | Antibiotic 107891, its factors A1 and A2, pharmaceutically acceptable salts and compositions, and use thereof |
PCT/US2005/004843 WO2006075988A1 (en) | 2005-01-12 | 2005-01-19 | Antibiotic 107891, its factors a1 and a2, pharmaceutically acceptable salts and compositions, and use thereof |
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JP2008526961A JP2008526961A (ja) | 2008-07-24 |
JP4189026B2 true JP4189026B2 (ja) | 2008-12-03 |
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CN (1) | CN101098707B (ja) |
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CA (1) | CA2593818C (ja) |
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PL (1) | PL1855705T3 (ja) |
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US7351687B2 (en) * | 2003-07-18 | 2008-04-01 | Vicuron Pharmaceuticals, Inc. | Antibiotic 107891, its factors A1 and A2, pharmaceutically acceptable salts and compositions, and use thereof |
AU2008364202A1 (en) * | 2008-11-24 | 2011-07-07 | Sentinella Pharmaceuticals, Inc. ("Sentinella") | Lantibiotic carboxyamide derivatives with enhanced antibacterial activity |
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US6218362B1 (en) * | 1997-09-08 | 2001-04-17 | Universite Laval | Lantibiotic from Streptococcus mutans and uses thereof |
US6551591B1 (en) * | 2001-09-07 | 2003-04-22 | Essential Therapeutics, Inc. | Antibiotics from microbispora |
BRPI0412591A (pt) * | 2003-07-18 | 2006-09-19 | Vicuron Pharm Inc | antibiótico 107891, seus fatores a1 e a2, sais e composições farmaceuticamente aceitáveis e uso destes |
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HRP20120809T1 (hr) | 2012-11-30 |
BRPI0519325A2 (pt) | 2009-01-13 |
CN101098707B (zh) | 2011-11-30 |
EP1855705A4 (en) | 2008-11-12 |
JP2008526961A (ja) | 2008-07-24 |
NZ556369A (en) | 2009-08-28 |
RS52513B (en) | 2013-04-30 |
CA2593818C (en) | 2014-12-16 |
EA200701267A1 (ru) | 2008-02-28 |
EA012164B1 (ru) | 2009-08-28 |
PL1855705T3 (pl) | 2012-12-31 |
CN101098707A (zh) | 2008-01-02 |
NO20073491L (no) | 2007-08-03 |
MX2007008512A (es) | 2007-09-14 |
IL184376A0 (en) | 2007-10-31 |
SI1855705T1 (sl) | 2012-11-30 |
TNSN07262A1 (fr) | 2008-12-31 |
DK1855705T3 (da) | 2012-10-15 |
CA2593818A1 (en) | 2006-07-20 |
AU2005324536B2 (en) | 2009-03-05 |
EP1855705A1 (en) | 2007-11-21 |
AU2005324536A1 (en) | 2006-07-20 |
EP1855705B1 (en) | 2012-07-11 |
ES2391085T3 (es) | 2012-11-21 |
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