Rui Li , Fengxia Wang , Lu Huang , Lvheng Zhao , Ting Qin , Shan Liu , Kunyao Xu , Bi Wang , Ling Li , Sha He
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引用次数: 0
Abstract
Background
Resistance to 5-fluorouracil (5-FU) poses a significant challenge in colorectal cancer (CRC) treatment. Morin is a flavonoid with anti-tumor properties. However, its role in overcoming acquired 5-FU resistance in CRC remains unclear.
Methods
5-FU-resistant CRC (5-FU/CRC) cell lines (HT29/5-FU and HCT116/5-FU) were established using the IC50 concentration increment method. After treatment with Morin and autophagy inhibitors (3-MA) or agonists (RAPA), cell viability, apoptosis, colony formation, migration, invasion, and autophagy were evaluated. In vivo, xenograft models of 5-FU/CRC assessed Morin's therapeutic effects.
Results
5-FU/CRC cells were successfully constructed. Morin inhibited the viability, migration, and invasion of 5-FU/CRC cells and promoted apoptosis. Morin also inhibited autophagy in 5-FU/CRC cells. Besides, autophagy activated by RAPA could eliminate the effect of Morin on 5-FU/CRC cells, while 3-MA enhanced the effects of Morin. In nude mouse models, Morin inhibited the growth and improved the pathological structure of 5-FU/CRC xenografts by inhibiting autophagy.
Conclusion
Morin suppresses the progression of 5-FU/CRC by inhibiting autophagy, suggesting its potential as a therapeutic agent to combat 5-FU resistance.
背景:5-氟尿嘧啶(5-FU)耐药性是结直肠癌(CRC)治疗中的一个重大挑战。桑辣素是一种具有抗肿瘤特性的类黄酮。然而,其在克服CRC获得性5-FU耐药中的作用尚不清楚。方法采用IC50浓度递增法建立5-FU耐药CRC (5-FU/CRC)细胞株HT29/5-FU和HCT116/5-FU。用桑里素和自噬抑制剂(3-MA)或激动剂(RAPA)治疗后,评估细胞活力、凋亡、菌落形成、迁移、侵袭和自噬。在体内,5-FU/CRC异种移植模型评估了Morin的治疗效果。结果成功构建了5- fu /CRC细胞。桑辣素抑制5-FU/CRC细胞的活力、迁移和侵袭,促进细胞凋亡。桑辣素还能抑制5-FU/CRC细胞的自噬。此外,RAPA激活的自噬可以消除Morin对5-FU/CRC细胞的作用,而3-MA可以增强Morin的作用。在裸鼠模型中,桑里素通过抑制自噬来抑制5-FU/CRC异种移植物的生长,改善其病理结构。结论桑辣素通过抑制自噬抑制5-FU/CRC的进展,提示其可能是一种对抗5-FU耐药性的治疗药物。
期刊介绍:
IJBCB publishes original research articles, invited reviews and in-focus articles in all areas of cell and molecular biology and biomedical research.
Topics of interest include, but are not limited to:
-Mechanistic studies of cells, cell organelles, sub-cellular molecular pathways and metabolism
-Novel insights into disease pathogenesis
-Nanotechnology with implication to biological and medical processes
-Genomics and bioinformatics