Yujie Yang, Yian Wang, Hongke Qu, Dan Wang, Junshang Ge, Pan Wu, Qijia Yan, Pan Chen, Bo Xiang, Ming Zhou, Can Guo, Wei Xiong, Lei Shi, Zhaoyang Zeng
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引用次数: 0
Abstract
Introduction
CircRNAs play critical roles in the onset and progression of nasopharyngeal carcinoma (NPC), although their underlying mechanisms remain incompletely understood.
Objectives
In this study, we investigated the mechanism of circCDYL in promoting the proliferation, invasion and migration of NPC in vitro and in vivo.
Methods
We reanalyzed RNA sequencing data (GSE137543, PRJNA391554) and validated findings with RT-qPCR and in situ hybridization experiments. Functional assays were subsequently performed both in vitro and in vivo.
Results
We identified circCDYL as being highly expressed in NPC, with its expression levels positively correlated with clinical tumor staging. Functionally, circCDYL promotes tumor proliferation and metastasis both in vitro and in vivo. Mechanistically, circCDYL binds to the 3′-UTR of LDHA mRNA, stabilizing it and upregulating LDHA protein expression, thereby enhancing cellular glycolysis and increasing lactate production and accumulation. The elevated lactate, in turn, promotes lactylation of the actin-binding protein CFL1 at lysine 22. This modification reduces cell adhesion and stiffness, ultimately facilitating tumor cell proliferation, invasion, and migration.
Conclusion
These findings indicate that circCDYL and its downstream pathways may serve as potential diagnostic markers or therapeutic targets for NPC.
期刊介绍:
Journal of Advanced Research (J. Adv. Res.) is an applied/natural sciences, peer-reviewed journal that focuses on interdisciplinary research. The journal aims to contribute to applied research and knowledge worldwide through the publication of original and high-quality research articles in the fields of Medicine, Pharmaceutical Sciences, Dentistry, Physical Therapy, Veterinary Medicine, and Basic and Biological Sciences.
The following abstracting and indexing services cover the Journal of Advanced Research: PubMed/Medline, Essential Science Indicators, Web of Science, Scopus, PubMed Central, PubMed, Science Citation Index Expanded, Directory of Open Access Journals (DOAJ), and INSPEC.