{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T06:31:18Z","timestamp":1782973878679,"version":"3.54.5"},"reference-count":45,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2023,9,7]],"date-time":"2023-09-07T00:00:00Z","timestamp":1694044800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Natural Science Foundation of China","award":["82130084"],"award-info":[{"award-number":["82130084"]}]},{"name":"Natural Science Foundation of China","award":["2023-JC-ZD-45"],"award-info":[{"award-number":["2023-JC-ZD-45"]}]},{"name":"Shaanxi Natural Science Basic Research Program","award":["82130084"],"award-info":[{"award-number":["82130084"]}]},{"name":"Shaanxi Natural Science Basic Research Program","award":["2023-JC-ZD-45"],"award-info":[{"award-number":["2023-JC-ZD-45"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Up to 50% of hepatocellular carcinoma (HCC) is caused by hepatitis B virus (HBV) infection, and the surface protein of HBV is essential for the progression of HBV-related HCC. The expression of large HBV surface antigen (LHB) is presented in HBV-associated HCC tissues and is significantly associated with the development of HCC. Gene set enrichment analysis revealed that LHB overexpression regulates the cell cycle process. Excess LHB in HCC cells induced chronic endoplasmic reticulum (ER) stress and was significantly correlated with tumor growth in vivo. Cell cycle analysis showed that cell cycle progression from G1 to S phase was greatly enhanced in vitro. We identified intensive crosstalk between ER stress and cell cycle progression in HCC. As an important regulator of the G1\/S checkpoint, p27 was transcriptionally upregulated by transcription factors ATF4 and XBP1s, downstream of the unfolded protein response pathway. Moreover, LHB-induced ER stress promoted internal ribosome-entry-site-mediated selective translation of p27, and E3 ubiquitin ligase HRD1-mediated p27 ubiquitination and degradation. Ultimately, the decrease in p27 protein levels reduced G1\/S arrest and promoted the progress of HCC by regulating the cell cycle.<\/jats:p>","DOI":"10.3390\/ijms241813825","type":"journal-article","created":{"date-parts":[[2023,9,7]],"date-time":"2023-09-07T09:51:37Z","timestamp":1694080297000},"page":"13825","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Large HBV Surface Protein-Induced Unfolded Protein Response Dynamically Regulates p27 Degradation in Hepatocellular Carcinoma Progression"],"prefix":"10.3390","volume":"24","author":[{"given":"Yixiao","family":"Guo","sequence":"first","affiliation":[{"name":"National Translational Science Center for Molecular Medicine and Department of Cell Biology, Fourth Military Medical University, Xi\u2019an 710032, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jie","family":"Shao","sequence":"additional","affiliation":[{"name":"National 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