Limosilactobacillus fermentum LF61:ゲノムから臨床応用までの安全性と機能性に関する多角的研究
Manfei Jin1, Fei Xu2, Yinhua Liu2
1Plateau Biomedical Big Data Mining, and Bioinformatics Analysis Laboratory, Xizang Minzu University, Xianyang, 712082, China; Provincial Key Laboratory of Molecular Genetic Mechanism and Intervention of Diseases related to the Tibetan Plateau, Xizang Minzu University, Xianyang, 712082,China.
まとめ
ヒトミルク由来の安全なプロバイオティクスであるLimosilactobacillus fermentum LF61は、腸管免疫を増強します。臨床試験では、抗菌ペプチドと免疫グロブリンを増加させ、免疫調節プロバイオティクスとしての使用を支持することが示されました。
科学分野:
- 微生物学
- 免疫学
- 消化器病学
背景:
- Limosilactobacillus fermentum LF61はヒトミルク由来の株です。
- プロバイオティクスは腸内マイクロバイオームと免疫システムを調節します。
- LF61の安全性と有効性を理解することは、その応用に不可欠です。
研究 の 目的:
- Limosilactobacillus fermentum LF61の安全性と機能的有効性を包括的に評価すること。
- 腸内マイクロバイオームと宿主免疫応答に対するLF61の影響を調査すること。
- 免疫調節プロバイオティクスとしてのLF61の有効性の証拠を提供すること。
主な方法:
- 病原性および耐性遺伝子のゲノム解析。
- in vitro生存アッセイ(胃/腸条件)および細胞毒性試験。
- マウスにおける急性経口毒性試験(LD50決定)。
- 免疫マーカー(LL-37、IgA、IgG、IgM)を評価するランダム化二重盲検臨床試験。
- 腸内マイクロバイオームの組成と機能のメタゲノム解析。
主要な成果:
- LF61ゲノムには、安全性基準を満たす病原性因子や抗生物質耐性遺伝子は含まれていません。
- シミュレートされた胃腸条件下での高いin vitro生存率、Caco-2細胞に対する非毒性。
- 急性経口毒性LD50 > 2 × 10^10 CFU/kg(マウス)。
- 臨床試験では、血清LL-37(12.3%)および免疫グロブリン(IgA、IgG、IgM)の増加が示されました。
- LF61は有益な細菌を促進し、炭水化物代謝を活性化し、マイクロバイオームの多様性を維持しました。
結論:
- Limosilactobacillus fermentum LF61は、安全で機能的に有効なプロバイオティクスです。
- LF61は、双方向の調節メカニズムを通じて腸-免疫軸を調節します。
- LF61は、腸の健康のための新しい免疫調節プロバイオティクスとしての可能性を示しています。
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