失巢
HIF1A型
新陈代谢
化学
脂肪酸代谢
腺癌
脂质代谢
生物化学
癌症研究
内科学
生物
医学
细胞凋亡
癌症
程序性细胞死亡
基因
作者
Xiaoyan Yang,Qingfeng Zhang,Liyang Wei,Kui Liu
摘要
Abstract Background Aberrantly expressed PCDH7 participates in the malignant progression of many cancers. PCDH7 has been newly discovered as a risk factor in lung cancer, but its functional study in lung adenocarcinoma (LUAD) has not been conducted yet. This study aimed to investigate the functional role of PCDH7 in LUAD. Methods Bioinformatics analyzed the expression of PCDH7 and HIF1A in LUAD tissues, predicted the binding sites between the two, analyzed the clinicopathological relevance of PCDH7 and examined the pathway enrichment of PCDH7. Expression of PCDH7 and HIF1A in LUAD cells was analyzed by RT‐qPCR. A nude mouse transplantation tumor model was constructed to analyze the effect of PCDH7 on tumor growth in vivo. The binding relationship between PCDH7 and HIF1A was confirmed by chromatin immunoprecipitation experiments and the dual‐luciferase assay. Cell viability was detected with Cell Counting Kit‐8. Triglyceride content and Caspase3 activity were measured using corresponding reagent kits. FASN and ACC1 expression was determined utilizing western blot. Results PCDH7 was highly expressed in LUAD and correlated with patients' overall survival time and N stage. In vitro and in vivo experiments confirmed that PCDH7 could promote LUAD growth and anoikis resistance. Moreover, overexpression of PCDH7 markedly increased the content of triglycerides in cells and promoted the expression of FASN and ACC1 proteins to inhibit LUAD cell anoikis. Cell rescue experiment confirmed that HIF1A activated PCDH7 to suppress LUAD anoikis by promoting fatty acid (FA) synthesis and metabolism. Conclusion Our findings demonstrated that the HIF1A/PCDH7 axis suppressed LUAD anoikis by promoting FA synthesis and metabolism. The FA synthesis pathway might be a key pathway regulated by PCDH7 in LUAD anoikis.
科研通智能强力驱动
Strongly Powered by AbleSci AI