加大凯瑟利西丁LL-37结肠表达与结肠直肠癌中的瘤进展有关
J Wlodarczyk1,2, L Dziki2, J Fichna1
1Department of Biochemistry, Chair of Biochemistry and Chemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland.
概括
抗微生物cathelicidin (LL-37) 在结直肠癌 (CRC) 中被上调,与晚期和结节转移相关. 通过FPR2激活和TLR3抑制,LL-37可能促进CRC,这需要进一步的治疗研究.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 结肠直肠癌 (CRC) 是一个严重的全球健康负担,治疗策略有限.
- 在CRC中抗微生物甲基乙素 (LL-37) 的作用是复杂的,并未完全理解,有证据表明它既有促进瘤的功能,也有抑制瘤的功能.
研究的目的:
- 研究LL-37在CRC组织中的表达及其与临床病理特征的相关性.
- 探索LL-37与关键分子通路的关联,包括维生素D信号传递和G蛋白合受体 (GPCRs),如甲基受体2 (FPR2) 和通关类受体 (TLRs).
主要方法:
- 使用定量实时PCR分析了25个CRC组织中的LL-37mRNA表达,并匹配了健康的结肠粘膜.
- 在CRC组织中评估了FPR2,TLR3,TLR4,CXCR2和MrgX2的表达水平.
- 在LL-37表达和临床病理因素 (瘤阶段,结节转移) 之间进行了相关性分析.
主要成果:
- 与正常的粘膜相比,LL-37mRNA表达在CRC组织中显著上调 (p<0.001).
- 在晚期CRC (AJCC阶段III) 和结节转移的瘤中观察到更高的LL-37表达 (p=0.006).
- CRC组织显示FPR2表达显著增加,TLR3表达减少,这表明它们参与瘤进展.
结论:
- 在结直肠癌中,LL-37的表达升高,与疾病进展有关.
- 通过FPR2激活和TLR3抑制,LL-37可能有助于CRC进展.
- 对LL-37信号机制的进一步研究对于开发新的CRC治疗点至关重要.
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