Rauvolfia Verticillata 乳糖ポリサッカライドは,炎症に関連した結腸癌を緩和し,腸内微生物群,短鎖脂肪酸代謝,NF-κB/IL-6/STAT3シグナル伝達経路の調節と相関する
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PubMedで要約を見る
まとめ
この要約は機械生成です。Rauvolfia verticillataのペクトポリサッカリドは,腸内微生物のバランスを回復し,重要なシグナル伝達経路を調節することによって,炎症に起因する大腸がん (CRC) を緩和します. この天然化合物は CRCの治療戦略として有望です
科学分野
- 胃腸科と肝臓科
- 腫瘍学
- 微生物 学 と 感染症
背景
- 慢性炎症が重要な危険因子として,若年層では結腸直腸がん (CRC) の発生率が上昇しています.
- 腸内微生物の不活性化と異常なNF-κB/STAT3シグナル伝達経路は,CRCの病原化に関与している.
- 腸内免疫と微生物の恒常性を標的とする天然化合物は,CRCの治療の可能性を示しています.
研究 の 目的
- 炎症に関連した結腸直腸がん (CRC) のマウスモデルにおけるRauvolfia verticillataの乳房ポリサッカリド (PPs) の治療可能性を評価する.
- 腸内微生物群の調節とNF-κB/IL-6/STAT3シグナル伝達経路に焦点を当てて,PPの作用の背後にあるメカニズムを調査する.
主な方法
- アゾキシメタン (AOM) / デクストラン硫酸ナトリウム (DSS) によって誘発されたCRCはC57BL/6マウスで,PP,STAT3阻害剤,または糞便微生物移植 (FMT) による治療が続いた.
- 組織病理学,免疫ヒスト化学,ウエスタン・ブロット,免疫光,16S rRNA配列化,短鎖脂肪酸 (SCFA) 分析を用いた.
- 評価には,腸内損傷の重度,炎症マーカー,シグナル伝達経路の活性化,腸内微生物の構成,SCFAプロファイルが含まれていた.
主要な成果
- PP治療は,AOM/ DSS誘発のCRCマウスにおける体重減少,腸内損傷,および疾患活動指数 (DAI) を著しく減少させた.
- PP投与はNF- kBとSTAT3の活性化を抑制し,腸内微生物群の多様性を回復し,SCFAレベル (例えばヘクサノ酸とイソヘクサノ酸) を正常化させた.
- PP治療を受けたドナーのFMTは治療効果を模倣し,大腸炎を緩和し,NF- kB/ STAT3経路を阻害しました.
結論
- Rauvolfia verticillataのペクトポリサッカリドは,炎症に起因する結腸直腸がんを緩和するのに有意な効果を示しています.
- 治療効果は腸内微生物群の調節,SCFAの代謝,およびNF- kB/ IL- 6/ STAT3のシグナリングカスケードに起因する.
- PPは炎症に関連したCRCの管理に有望な自然な治療薬です.
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