Analysis and identification of m6A RNA methylation regulators in metastatic osteosarcoma
Hanji Huang, Xiaofei Cui, Xiong Qin, Kanglu Li, Guohua Yan, Dejie Lu, Mingjun Zheng, Ziwei Hu, Danqing Lei, Nihan Lan, Li Zheng, Zhenchao Yuan, Bo Zhu, Jinmin Zhao
Abstract
A methylation regulators, namely RBM15, METTL3, and LRPPRC, were associated with the low survival rate of patients with OS. We further studied the independent prognostic factors by performing univariate and multivariate Cox analyses and found that metastasis was an independent prognostic factor for patients with OS. Furthermore, we found for the first time that RBM15 was specific for metastatic OS rather than non-metastatic OS. Moreover, the significant overexpression of RBM15 was validated in metastatic OS cell lines and in actual human clinical specimens. We also revealed that RBM15 promoted the invasion, migration, and metastasis of OS cells through loss-functional and gain-functional experiments and an animal metastatic model. In conclusion, RBM15 has a high correlation with OS metastasis formation and the decreased survival rate of patients with OS, and this may serve as a useful biomarker for predicting metastasis and prognosis of patients with OS.