JP6401180B2 - 下痢を治療および/または予防するプロバイオティクス株 - Google Patents
下痢を治療および/または予防するプロバイオティクス株 Download PDFInfo
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- JP6401180B2 JP6401180B2 JP2015547122A JP2015547122A JP6401180B2 JP 6401180 B2 JP6401180 B2 JP 6401180B2 JP 2015547122 A JP2015547122 A JP 2015547122A JP 2015547122 A JP2015547122 A JP 2015547122A JP 6401180 B2 JP6401180 B2 JP 6401180B2
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- diarrhea
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- bacillus subtilis
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Description
本特許出願は、2012年12月12日出願のフランス特許出願番号FR 12 61916への優先権を主張する。このフランス特許出願の内容は、参照により完全に組み込まれる。
本発明は、下痢の治療および/または予防において使用するためのプロバイオティクス株、特に、桿菌プロバイオティクス株に関する。本発明はまた、大腸中の水分吸収に作用する特定の特徴を有するプロバイオティクス株を選択する方法にも関する。
大腸における水分吸収または分泌に関与する少なくとも一つの輸送体の発現への少なくとも一つの試験株の効果を測定する工程、ならびに、
前記大腸における水分分泌に関与する少なくとも一つの輸送体の発現の減少および/または前記大腸における水分吸収に関与する少なくとも一つの輸送体の増加を誘引する少なくとも一つの株を選択する工程を含む、方法に関する。
CFTRタンパク質(嚢胞性繊維症膜貫通型導電性調節因子)の発現へのおよび/またはNHE3タンパク質(ナトリウム水素交換体3)の発現への少なくとも一つの試験株の効果を測定する工程、ならびに、
前記CFTRタンパク質の発現の減少および/または前記NHE3タンパク質の発現の増加を誘引する少なくとも一つの株を選択する工程を含む、方法に関する。
本発明の選択方法は、下痢の治療および/または予防に有用なプロバイオティクス株を同定することを目標とする。
大腸における水分吸収または分泌に関与する少なくとも一つの輸送体の発現への少なくとも一つの試験株の効果を測定する工程、ならびに、
前記大腸における水分分泌に関与する少なくとも一つの輸送体の発現の減少および/または前記大腸における水分吸収に関与する少なくとも一つの輸送体の発現の増加を誘引する少なくとも一つの株を選択する工程を含む、方法に関する。
CFTRタンパク質の発現へのおよび/またはNHE3タンパク質の発現への少なくとも一つの試験株の効果を測定する工程、ならびに、
前記CFTRタンパク質の発現の減少および/または前記NHE3タンパク質の発現の増加を誘引する少なくとも一つの株を選択する工程を含む、方法であることを特徴とする。
本発明の方法を使用して試験される株は、任意の微生物株であってもよい。
本発明の方法は、大腸における水分の吸収または分泌に関与する少なくとも一つの輸送体の発現、特に、CFTRタンパク質および/またはNHE3タンパク質の発現への試験株の効果を測定する工程を含む。
本発明の一つの方法は、大腸における水分の吸収または分泌に関与する少なくとも一つの輸送体の発現、特に、CFTRタンパク質および/またはNHE3タンパク質の発現への試験株の効果を、生体試料中で測定する工程を含む。
本発明の方法では、大腸における水分の吸収または分泌に関与する輸送体、特に、CFTRタンパク質および/またはNHE3タンパク質の発現への試験株の効果を、前記試験株で処置したモデル動物から得られる生体試料中で測定される目的タンパク質発現レベルと前記試験株で処置しなかった(同種類の)モデル動物から得られる(同種類の)生体試料中で測定される目的タンパク質発現レベルとを比較することによって決定する。最後に言及した動物を、コントロール動物と呼ぶ。
枯草菌株の植菌源を培養培地に植菌する工程と、
好気性条件で培養し、細胞を複製させる工程と、
その培養培地からバイオマスを分離して、枯草菌細胞を得る工程とを、含む。
試験株で処置したサンプル中で測定される目的タンパク質発現レベルと、コントロールサンプル中で測定される目的タンパク質発現レベルを比較することによって、試験株が目的タンパク質の発現の減少もしくは増加を誘引するかどうか、または、試験株が前記発現に影響がなかったかどうかを決定することが可能となる。
本発明は、下痢の治療および/または予防に使用するための、大腸において過剰に存在する水分の吸収を誘引することができる、本発明の方法により同定される任意のプロバイオティクス株に関する。本発明は、また、下痢の治療および/または予防するための医薬品の製造に用いるために使用されるそのようなプロバイオティクス株に関する。
本発明は、また、下痢の治療および/または予防に使用するための組成物であって、本発明の少なくとも一つのプロバイオティクス株または、より具体的には、そのような株の培養により得られる細胞を含む組成物に関する。特に、前記組成物は、CNCMにおいて、2001年10月25日に、番号I−2745で寄託された枯草菌CU1株の培養により得られる有効量の細胞を含む。
腸液の制御に関与する輸送体に直接作用するので、本発明の方法により同定されるプロバイオティクス株、より具体的には、そのような株の培養により得られる酵母細胞または細菌細胞を治療剤として使用してもよい。
材料および方法
試験プロバイオティクス株
試験株は以下のもの:ラクトバチルス・プランタラム株および枯草菌CU1株である。
4匹のマウスを、それぞれCU1を109CFU/日で、2週間処置した。
試験したプロバイオティクス株のうち、枯草菌CU1株のみが、大腸粘膜を介する水分の移動に関与する2つの輸送体CFTRおよびNHE3の発現に影響があることが分かった。事実、図1に示すように、枯草菌CU1株で2週間マウスを処置すると、健常マウスの大腸の大腸細胞の頂極でのCFTR発現の有意な減少が導かれた。図2に示すように、枯草菌CU1株で2週間マウスを処置すると、健常マウスの大腸の大腸細胞の頂極でのNHE3発現の有意な増加が導かれた。
材料および方法
LPS誘引下痢モデル
109CFU/日/動物の被評価プロバイオティクス株を、胃内経路で雄DBA/2マウスに14日間投与した。
109CFU/日/動物の被評価プロバイオティクス株を、胃内経路で雄NMRIマウスに14日間投与した。
抗生物質誘引下痢動物モデルを、抗生物質の数を減らして使用することにより準備した(Chenら、2008年、Gastroenterology,135(6):1984−92の仕事に基づく)。抗生物質投与は、免疫応答とともにフローラの腸内毒素症(アンバランス)およびマウス腸の粘液生産細胞の数の変化を誘引する。抗生物質処置は、クロストリジウム・ディフィシルの出現を顕著に誘引することができる。
枯草菌CU1株を、各種マウス下痢モデルで試験した。
図4および5に示すように、CU1株は、LPS(図5)およびヒマシ油(図6)により誘引される下痢を有意に予防することが有意に分かった。
15日間のCU1株を用いた予防的処置は、下痢が開始する1時間前に経口経路で単一用量(1mg/kg)で投与されたロペラミド(対照抗下痢分子)と同じ効力で、LPSまたはヒマシ油により誘引された下痢を減少させることが分かった。ロペラミドは、LPS後の大便排泄における50%の水分減少(CU1については40%)、およびヒマシ油後には60%(CU1については60%)を示す。
生体内で、枯草菌CU1株は、体液過剰状態において大腸の吸収能力を改善することができる。
ヒマシ油モデルおよびLPSモデルにおいて小腸の分泌/吸収能力に影響がないこと;
ヒマシ油により誘引されるものではなく、大腸壁のレベルでLPSにより誘引される傍細胞透過性の増加を打ち消すこと;
大腸壁レベルでヒマシ油により誘引される短絡電流を減少させることである(それは、ヒマシ油により誘引される便通を促進する下痢状態(およびベースライン状態ではなく)において、大腸が水分を吸収する能力を補強することを示唆する)。
Claims (12)
- 下痢を治療および/または予防するための、枯草菌(Bacillus subtilis)のプロバイオティクス株を選択する方法であって、
CFTR(嚢胞性繊維症膜貫通型導電性調節因子)タンパク質の発現への、枯草菌(Bacillus subtilis)の少なくとも一つの試験株の効果を測定する工程、ならびに、
前記CFTRタンパク質の発現の減少を誘引する、枯草菌(Bacillus subtilis)の少なくとも一つの株を選択する工程を含む、選択する方法。 - 前記方法が、
NHE3(ナトリウム水素交換体3)タンパク質の発現への、枯草菌(Bacillus subtilis)の少なくとも一つの試験株の効果を測定する工程、ならびに、
前記NHE3タンパク質の発現の増加を誘引する、枯草菌(Bacillus subtilis)の少なくとも一つの株を選択する工程をさらに含む、請求項1に記載の下痢を治療および/または予防するための、枯草菌(Bacillus subtilis)のプロバイオティクス株を選択する方法。 - 前記CFTRタンパク質および/または前記NHE3タンパク質の発現が、電気泳動、ウエスタンブロット、免疫アッセイ、免疫組織化学、免疫細胞化学、質量分析、RT−PCR、またはノーザンブロットにより測定されることを特徴とする、請求項1または2に記載の下痢を治療および/または予防するためのプロバイオティクス株を選択する方法。
- 下痢の治療および/または予防のための医薬品の製造のための、CNCM(国立微生物培養物コレクション)において2001年10月25日に番号I−2745で寄託された枯草菌(Bacillus subtilis)CU1株のプロバイオティクス株の使用。
- 前記下痢が急性下痢または慢性下痢である、請求項4に記載のプロバイオティクス株の使用。
- 前記下痢が感染起源の下痢または非感染起源の下痢である、請求項4に記載のプロバイオティクス株の使用。
- 下痢の治療および/または予防のための医薬品の製造のための、CNCMにおいて2001年10月25日に番号I−2745で寄託された枯草菌CU1株の培養により得られるプロバイオティクス細胞の使用。
- 前記下痢が急性下痢または慢性下痢である、請求項7に記載のプロバイオティクス細胞の使用。
- 前記下痢が感染起源の下痢または非感染起源の下痢である、請求項7に記載のプロバイオティクス細胞の使用。
- 下痢の治療および/または予防のための医薬品の製造に使用するための、CNCMにおいて2001年10月25日に番号I−2745で寄託された枯草菌CU1株の培養により得られるプロバイオティクス細胞を含む組成物。
- 前記下痢が急性下痢または慢性下痢である、請求項10に記載の組成物。
- 前記下痢が感染起源の下痢または非感染起源の下痢である、請求項10に記載の組成物。
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PCT/FR2013/053044 WO2014091160A1 (fr) | 2012-12-12 | 2013-12-12 | Souches probiotiques pour le traitement et/ou la prévention de la diarrhée |
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US11173184B2 (en) | 2016-05-31 | 2021-11-16 | Evonik Operations Gmbh | Bacillus subtilis strain with probiotic activity |
JP6991162B2 (ja) * | 2016-05-31 | 2022-02-04 | エボニック オペレーションズ ゲーエムベーハー | プロバイオティック活性を示すバチルス・サブティリス(Bacillus subtilis)菌株 |
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CN105008924B (zh) | 2017-03-08 |
RU2642320C2 (ru) | 2018-01-24 |
RU2015128101A (ru) | 2017-01-19 |
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DK2932265T3 (en) | 2018-11-26 |
FR2999191A1 (fr) | 2014-06-13 |
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US20160000840A1 (en) | 2016-01-07 |
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