LRRC59 serves as a novel biomarker for predicting the progression and prognosis of bladder cancer

Peng Zhang; Xiaodu Xie; Chunming Li; Chaohua Zhang; Peihe Liang

doi:10.1002/cam4.6542

LRRC59 serves as a novel biomarker for predicting the progression and prognosis of bladder cancer

Cancer Med. 2023 Oct;12(19):19758-19776. doi: 10.1002/cam4.6542. Epub 2023 Sep 14.

Authors

Peng Zhang¹, Xiaodu Xie¹, Chunming Li², Chaohua Zhang³, Peihe Liang¹

Affiliations

¹ Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
² Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
³ Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.

Abstract

Background: Leucine-rich repeat-containing protein 59 (LRRC59) is an endoplasmic reticulum membrane protein involved in various cancers, but its role in bladder cancer (BC) has not been reported. The aim of the present study was to investigate the role of LRRC59 protein in BC progression and prognosis.

Methods: The expression profile and clinical significance were retrieved from BC patients in the Cancer Genome Atlas database. The methylation status of LRRC59 was analyzed by UALCAN and MethSurv databases. Potential signaling pathways and biological functions were explored by functional enrichment analysis. Immunocyte infiltration was evaluated by CIBERSORT analysis. The prognostic value of LRRC59 was evaluated by Kaplan-Meier and Cox regression analyses. Overall survival (OS) was predicted by the nomogram plot established in this study. LRRC59 expression in 10 pairs BC and adjacent noncancerous tissues were analyzed by immunohistochemistry (IHC). Cell proliferation, migration, and invasion were detected by CCK8, colony formation assay, transwell assay, and cell scratch assay, respectively. Proteins related to epithelial-mesenchymal transition and apoptosis were detected by western blot.

Results: LRRC59 overexpression significantly decreased OS, disease-specific survival, and progress-free interval of BC patients. LRRC59 was a prognostic marker for OS and its hypomethylation status signified a poor prognosis. LRRC59 overexpression was correlated with infiltration of resting memory CD4 T cells, memory activated CD4 T cells, resting NK cells, macrophages M0, M1, M2, and neutrophils. IHC showed that the LRRC59 expression in BC tissue was significantly higher than that in adjacent noncancerous tissue. Knockdown of LRRC59 expression inhibited the proliferation of BC cells and reduced their migratory ability. Western blot showed that Snail and vimentin protein expressions decreased, while E-cadherin expressions increased.

Conclusions: LRRC59 expression can predict the outcome of BC independently and serve as a new biomarker for diagnosis.

Keywords: LRRC59; bioinformatics; bladder cancer; cell proliferation; migration; prognosis.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biomarkers, Tumor* / metabolism
Humans
Kaplan-Meier Estimate
Membrane Proteins / genetics
Prognosis
Urinary Bladder / chemistry
Urinary Bladder Neoplasms* / diagnosis

Substances

Biomarkers, Tumor
LRRC59 protein, human
Membrane Proteins