GNPNAT1 promotes the stemness of breast cancer and serves as a potential prognostic biomarker

Hu,Hao; Wang,Zhi-Wen; Hu,Shuang; Xiang,Yuan; Deng,Yang; Wan,Fu-Jian; Zhang,Tong-Cun; Yang,Zhong-Yi; Liao,Xing-Hua

doi:10.3892/or.2023.8594

GNPNAT1 promotes the stemness of breast cancer and serves as a potential prognostic biomarker

Authors:
- Hao Hu
- Zhi-Wen Wang
- Shuang Hu
- Yuan Xiang
- Yang Deng
- Fu-Jian Wan
- Tong-Cun Zhang
- Zhong-Yi Yang
- Xing-Hua Liao
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Affiliations: College of Life and Health Sciences, Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, Hubei 430000, P.R. China, Yueyang People's Hospital, Yueyang Hospital Affiliated to Hunan Normal University, Yueyang Breast Disease Diagnosis and Treatment Technology Research Center, Yueyang, Hunan 414000, P.R. China, Department of Medical Laboratory, Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, P.R. China
Published online on: June 28, 2023 https://doi.org/10.3892/or.2023.8594
Article Number: 157
Copyright: © Hu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Glucosamine‑phosphate N‑acetyltransferase 1 (GNPNAT1) is a member of the acetyltransferase superfamily, related to general control non‑depressible 5 (GCN5). It has been documented that GNPNAT1 expression is increased in lung cancer, whereas its involvement in breast cancer (BC) remains to be further investigated. The present study aimed to evaluate the expression levels of GNPNAT1 in BC and its effect on BC stem cells (BCSCs). The Cancer Genome Atlas (TCGA) database was used for the analysis of the expression of GNPNAT1 and its clinical significance. Cox regression and logistic regression analyses were used to evaluate prognosis‑related factors. The GNPNAT1‑binding protein network was constructed using the Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) application. The biological signaling pathways implicated in GNPNAT1 were investigated through function enrichment analysis including Gene Ontology, Kyoto Encyclopedia of Genes and Genomes, and gene set enrichment analysis. The single‑sample GSEA method was used to investigate the connection between the level of immune infiltration and GNPNAT1 expression in BC. GNPNAT1 expression was upregulated in patients with BC and was significantly associated with a poor prognosis. GNPNAT1 and its co‑expressed genes were mostly enriched in nuclear transport, Golgi vesicle transport, ubiquitin‑like protein transferase activity and ribonucleoprotein complex binding, as determined using functional enrichment analysis. GNPNAT1 expression was positively associated with Th2 cells and T‑helper cells, and negatively associated with plasmacytoid dendritic cells, CD8⁺ T‑cells and cytotoxic cells. Additionally, the GNPNAT1 expression levels were considerably increased in BCSCs. GNPNAT1 knockdown markedly decreased the stemness ability of SKBR3 and Hs578T cells, including the production of CSC markers and mammosphere or clone formation, while GNPNAT1 overexpression increased the stemness level. Hence, the findings of the present study demonstrate that GNPNAT1 may be exploited as a novel prognostic biomarker and therapeutic target for BC.

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