Pan‑cancer Analyses Reveal the Regulation and Clinical Outcome Association of PCLAF in Human Tumors

Overview

Journal Int J Oncol

Specialty Oncology

Date 2022 Apr 15

PMID 35425993

Authors

Xiaowei Liu

Cheng Cheng

Yuanxia Cai

Yaoyao Gu

Yangkun Wu

Kai Chen

Zhixiang Wu

Affiliations

Soon will be listed here.

Abstract

Studies have shown that PCNA clamp associated factor (PCLAF) plays a paramount role in a variety of cancers; however, the expression profile and the specific molecular mechanism of PCLAF in cancer remains unclear, as is its value in the human pan‑cancer analysis. Based on the publicly available datasets of The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO), a comprehensive analysis of the probable carcinogenic effects of the gene was performed in 33 human cancers. It was found that is highly expressed in cancer tissues compared with normal tissues, and is significantly correlated with poor prognosis. We found that the eight tumors with significantly high PCLAF expression presented with decreased DNA methylation levels of PCLAF, including cholangiocarcinoma (CHOL), cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC), glioblastoma multiforme (GBM), pheochromocytoma and paraganglioma (PCPG), sarcoma (SARC), testicular germ cell tumor (TGCT), stomach adenocarcinoma (STAD), and uterine corpus endometrial carcinoma (UCEC). The expression of PCLAF was found to be positively correlated with activated CD4 T cells (Act CD4) and type 2 T helper (Th2) cells, suggesting that PCLAF may play a particular role in tumor immune infiltration. In addition, the functional mechanism of PCLAF also involves the mitotic cell cycle process, cell division, and DNA replication. Our first pan‑cancer study provides a relatively extensive understanding of the carcinogenic effects of PCLAF in miscellaneous tumors.

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