瘤居民的Lactobacillus iners通过乳酸诱导的代谢重新连接来赋予化学辐射耐药性
Lauren E Colbert1, Molly B El Alam1, Rui Wang1
1Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
Cancer cell
|October 20, 2023
概括
瘤中的乳酸细菌,如Lactobacillus iners,与宫癌患者的生存率较差以及对化疗和辐射的耐药性有关. 针对这些细菌可以提供新的癌症治疗策略.
科学领域:
- 微生物学 微生物学
- 在瘤学瘤学.
- 代谢学 代谢学 代谢学
背景情况:
- 瘤微生物群产生代谢物,影响癌症的进展和治疗反应.
- 了解微生物组与癌症治疗之间的相互作用对于改善患者的治疗结果至关重要.
研究的目的:
- 研究瘤和肠道微生物组特征在宫癌中化学辐射反应中的作用.
- 识别特定的细菌物种及其与治疗结果相关的代谢活动.
主要方法:
- 瘤和肠道样本的深微生物组测序.
- 有针对性的细菌培养和用宫癌细胞进行体外检测.
- 代谢途径和乳酸信号的分析.
主要成果:
- 在瘤中发现的一种L-乳酸盐生产物Lactobacillus iners与患者存活率下降相关.
- 在宫癌细胞中,Lactobacillus iners诱导了化疗和辐射抵抗.
- 在Lactobacillus iners的瘤中观察到代谢重新连接和改变的乳酸信号.
- 类似的L-乳酸盐产生细菌与各种癌症类型的生存有关.
结论:
- 瘤微环境中的乳酸细菌可以通过改变瘤新陈代谢和乳酸信号来驱动治疗耐药性.
- 乳酸细菌代表了在多种癌症类型中增强癌症治疗疗效的潜在治疗点.
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