Integrated Analysis of the Functions and Prognostic Values of RNA-Binding Proteins in Colorectal Cancer

Ya Wang; Yuqiao Chen; Shuai Xiao; Kai Fu

doi:10.3389/fcell.2020.595605

Integrated Analysis of the Functions and Prognostic Values of RNA-Binding Proteins in Colorectal Cancer

Front Cell Dev Biol. 2020 Nov 5:8:595605. doi: 10.3389/fcell.2020.595605. eCollection 2020.

Authors

Ya Wang^{1

2}, Yuqiao Chen^{1

2}, Shuai Xiao³, Kai Fu^{1

2

4

5}

Affiliations

¹ Institute of Molecular Precision Medicine and Hunan Key Laboratory of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha, China.
² Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China.
³ Department of Gastrointestinal Surgery and Institute of Clinical Medicine, The First Affiliated Hospital, University of South China, Hengyang, China.
⁴ Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China.
⁵ Hunan Key Laboratory of Animal Models for Human Diseases, Central South University, Changsha, China.

Abstract

Colorectal cancer (CRC) is one of the most common malignant tumors. Selecting effective treatment for CRC patients, especially in the early stages, remains a challenge because of the lack of adequate biomarkers. Recent evidence suggests that RNA-binding proteins (RBPs) play a vital role in development and progression of carcinogenesis. However, their mechanisms in cancer progression are still limited. The role of RBPs in CRC has been poorly understood. There were 1,542 reported RBPs analyzed between CRC tissues and normal tissues using the Wilcoxon test to identify differentially expressed RBPs (DE RBPs). Then, the potential functions and the prognostic value of these DE RBPs were explored through systematic bioinformatics analysis. There were 177 DE RBPs identified between CRC tissues and normal tissues. A protein-protein interaction network was constructed based on DE RBPs, and critical modules were screened. A regulatory network between prognostic DE RBPs and differentially expressed transcription factors was constructed. Besides, a risk signature was built based on prognostic DE RBPs, which is able to predict overall survival of CRC patients with high accuracy. In conclusion, the results provided a comprehensive understanding of the functions of RBPs in CRC, as well as an RBP-related prognostic signature.

Keywords: RNA-binding protein; colorectal cancer; overall survival; prognostic signature; regulatory network.