JP7342192B1 - 化学療法による腸管損傷の関連病変又は細菌叢の不均衡の予防或いは補助療法におけるバチルスコアグランスbc198又はその代謝産物の用途 - Google Patents
化学療法による腸管損傷の関連病変又は細菌叢の不均衡の予防或いは補助療法におけるバチルスコアグランスbc198又はその代謝産物の用途 Download PDFInfo
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Abstract
Description
2019年7月10日付で、ドイツ微生物細胞培養コレクションに、受託番号DSM33206として寄託され、
2019年7月11日付で、台湾財団法人食品工業発展研究所に、受託番号BCRC910916として寄託されている。
1.細胞形態とグラム染色:細菌をMRSブロス培地において45℃嫌気性環境下で24時間培養した後、顕微鏡下で外観を観察すると、図1に示すような棒状の桿菌であり、
2.活動量:運動性あり、
3.胞子形成:胞子形成あり、
4.グラム染色:陽性、
5.カタラーゼ:陰性。
グリーンモルトに10倍重量の滅菌水を加え、ホモジナイザーで粉砕し、10分間重力沈降させ、上澄みをMRSブロス培地に入れ、50℃で48時間培養し、10分間重力沈降させ、培養物をMRS寒天プレートに広げ、次に50℃で72時間嫌気培養した後、寒天培地に出現した単一コロニーを回収し、分離株をさらに精製し、検査後、カタラーゼ陰性となり、顕微鏡下では棒状を呈する。
培養・分離したバチルスコアグランスBC198をTSB(Tryptone Soy Broth)培地に入れ、37℃の環境下で20~24時間培養し、遠心分離をして上清を除去し、細胞を採取して凍結乾燥してバチルスコアグランスBC198生菌を得た。
IEC-6細胞を1×104 cells/100μL培養液の濃度で釈96ウェルプレートに接種し、細胞がプレートに付着された後、異なる熱不活性化バチルス菌(菌数は108 CFU/mL)である本発明に開示されているバチルスコアグランスBC198、BC1菌株、BC2菌株、BC3菌株を加えた後、それぞれ5-FU薬(濃度が3μM)と共に96時間培養した後、MTT溶液を添加して、各ウェルの終濃度を0.5mg/mLにし、温度37℃、二酸化炭素5%濃度の培養環境下で4時間培養した後、培養液を吸引し、100μL DMSO(dimethyl sulfoxide)を加え、暗室で45分間振とうした後、マイクロプレート分光光度計で570nm吸光度値を測定し、各群の細胞生存率を計算し、結果を図1に示す。ここで、BC1菌株及びBC3菌株は、それぞれ市販の商品から分離されたバチルスコアグランス菌株で、BC2が受託番号BCRC10606として新竹食品工業研究所に寄託されている菌株である。
複数の5週齢の雄BALB/cマウスをランダムに群分けし、試験期間は18日で、各群のマウスの飼育温度を22±2℃に維持し、昼夜サイクルが各12時間で、自由摂食方法を用い、下記条件で投与し、ここで試験の11日目から13日目に投与された5-FU薬を除いて、他の薬剤は試験期間中(すなわち、試験の初日から試験期間の終わりまで)毎日投与された。5-FU薬は腹腔内注射により投与され、他の薬剤は経口投与された。
第2群:5-FU薬のみ(50mg/kg/day)を投与し、
第3群:グルタミン(1g/kg/day)及び5-FU薬(50mg/kg/day)を投与し、
第4群:本発明に開示されているバチルスコアグランスBC198(5×108/day)、及び5-FU薬(50mg/kg/day)を投与し、
第5群:本発明に開示されているバチルスコアグランスBC198(5×108/day)、グルタミン(1g/kg/day)及び5-FU薬(50mg/kg/day)を投与した。
実施例4の試験期間の終わりに、各群のマウスの血清をそれぞれ収集し、各群のマウスの血清中のIL-6濃度を市販のキットで分析し、結果を図5に示す。
実施例4の試験期間の終わりに、各群のマウスの大腸及び小腸組織を収集し、各群のマウスの大腸の長さをそれぞれ測定し、結果を図6に示す。かつ各群のマウスの大腸及び小腸の組織をスライスした後、ヘマトキシリン-エオシン染色し、結果を図7A及び図7Bに示す。
実施例4の試験の終わりに、各群のマウスの糞便を収集して、各群のマウスの糞便の配列決定解析を外部委託し、次に類似度(97%超)OTUs(Operational Taxonomic Units)のクラスタリング及び物種分類解析を行い、物種注釈結果に基づいて、各群のマウスの門階層(phylum)における相対存在量の上位10位の物種を選択し、結果を図8に示す。ここで、糞便配列決定解析及び細菌相解析は、本発明の属する技術の分野における通常の知識を有する者によく知られている技術である。一般的にまず糞便サンプルのDNAを抽出及び精製した後、PCRで増幅、精製し、配列決定が行われる。配列決定の結果は、ペアシーケンススプライシング(Raw Tags)、フィルタリングなどのステップを経て、識別可能な有効なデータを得てからOTUsのクラスタリング及び物種分類解析を実施する。
Claims (7)
- バチルスコアグランスBC198を含む化学療法による腸管損傷の関連病症を予防又は治療するための組成物であって、前記バチルスコアグランスBC198は、2019年7月10日付で、ドイツ微生物細胞培養コレクション(German Collection of Microorganisms and Cell Cultures、DSMZ)に、受託番号DSM33206として寄託されており、
前記化学療法による腸管損傷の関連病症は、体重減少、食欲不振、下痢、大腸長さの短縮、又は腸管組織損傷である組成物。 - グルタミンをさらに含む請求項1に記載の組成物。
- 前記バチルスコアグランスBC198の有効用量は、各個体に毎日少なくとも5×108CFU/dayを投与する請求項1又は2に記載の組成物。
- バチルスコアグランスBC198を含む腸内ミクロビオータのバランスを調整するための組成物であって、前記バチルスコアグランスBC198は、2019年7月10日付で、ドイツ微生物細胞培養コレクション(German Collection of Microorganisms and Cell Cultures、DSMZ)に、受託番号DSM33206として寄託されており、
腸内ミクロビオータのバランスを調整するための組成物は、下痢の発生に関連する腸内の少なくとも1つの菌株の成長を抑制するために用いられる組成物。 - 下痢の発生に関連する菌株の門階層がProteobacteria、Escherichia_Shigella、Odoribacter、UBA1819又はStaphylococcusである請求項4に記載の組成物。
- グルタミンをさらに含む請求項4に記載の組成物。
- 前記バチルスコアグランスBC198の有効用量は、各個体に毎日少なくとも5×108CFU/dayを投与する請求項4から6のいずれか1項に記載の組成物。
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AU2021106459A4 (en) | 2021-08-23 | 2021-11-04 | Syngen Biotech Co., Ltd | A Combination of Probiotics with Lacticaseibacillus Paracasei S38 and Bacillus Coagulans BC198 and Applications Thereof for Improving Body Compositions |
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AU2021106459A4 (en) | 2021-08-23 | 2021-11-04 | Syngen Biotech Co., Ltd | A Combination of Probiotics with Lacticaseibacillus Paracasei S38 and Bacillus Coagulans BC198 and Applications Thereof for Improving Body Compositions |
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