PMID- 32783291 OWN - NLM STAT- MEDLINE DCOM- 20211007 LR - 20211007 IS - 2410-8650 (Electronic) IS - 1607-551X (Linking) VI - 36 IP - 12 DP - 2020 Dec TI - The deubiquitinase USP34 stabilizes SOX2 and induces cell survival and drug resistance in laryngeal squamous cell carcinoma. PG - 983-989 LID - 10.1002/kjm2.12285 [doi] AB - Recent studies showed that the deubiquitinase ubiquitin-specific protease 34 (USP34) was involved in the tumorigenesis of several tumors, but its function and mechanism are still unclear in laryngeal squamous cell carcinoma (LSCC). In this study, we found that USP34 and SOX2 were elevated in LSCC tumor tissues, and we also found that USP34 expression was positively correlated with SOX2 expression. Our further studies showed that USP34 regulated the protein level of SOX2 in LSCC cells, but not the mRNA level, which suggested that USP34 stabilized SOX2. Moreover, USP34, as a deubiquitinase, could interact with SOX2, and reduce the polyubiquitination of SOX2. In addition, knockdown of USP34 could significantly inhibit LSCC cell growth, but overexpression of SOX2 could reverse this effect. Finally, we also found that USP34 and SOX2 were upregulated in cisplatin-resistant LSCC cells, but knockdown of USP34 could enhance the drug sensitivity of cisplatin in the resistant cells. Collectively, targeting USP34/SOX2 axis may be a promising strategy for the treatment of LSCC. CI - (c) 2020 The Authors. The Kaohsiung Journal of Medical Sciences published by John Wiley & Sons Australia on behalf of Kaohsiung Medical University. FAU - Dai, Wei-Li AU - Dai WL AUID- ORCID: 0000-0002-0534-4385 AD - Department of Otolaryngology, Division of Disease Control and Prevention, Office of Hospital Infection Management, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing, P.R. China. FAU - Yuan, Shu-Xian AU - Yuan SX AD - Department of Otolaryngology, Beijing Pinggu Hospital of Traditional Chinese Medicine, Beijing, P.R. China. FAU - Cao, Jing-Peng AU - Cao JP AD - Department of Otolaryngology, Lhasa People's Hospital, Lhasa, P.R. China. LA - eng PT - Journal Article DEP - 20200812 PL - China (Republic : 1949- ) TA - Kaohsiung J Med Sci JT - The Kaohsiung journal of medical sciences JID - 100960562 RN - 0 (SOX2 protein, human) RN - 0 (SOXB1 Transcription Factors) RN - 120904-94-1 (Polyubiquitin) RN - EC 3.4.19.12 (USP34 protein, human) RN - EC 3.4.19.12 (Ubiquitin-Specific Proteases) RN - Q20Q21Q62J (Cisplatin) SB - IM MH - Cell Line, Tumor MH - Cell Survival/drug effects MH - Cisplatin/pharmacology MH - *Drug Resistance, Neoplasm/drug effects/genetics MH - Gene Expression Regulation, Neoplastic/drug effects MH - HEK293 Cells MH - Humans MH - Laryngeal Neoplasms/genetics/*pathology MH - Polyubiquitin/metabolism MH - Protein Binding/drug effects MH - Protein Stability/drug effects MH - SOXB1 Transcription Factors/genetics/*metabolism MH - Squamous Cell Carcinoma of Head and Neck/genetics/*pathology MH - Ubiquitin-Specific Proteases/genetics/*metabolism MH - Ubiquitination/drug effects OTO - NOTNLM OT - LSCC OT - SOX2 OT - USP34 OT - cell survival OT - drug resistance EDAT- 2020/08/13 06:00 MHDA- 2021/10/08 06:00 CRDT- 2020/08/13 06:00 PHST- 2020/04/29 00:00 [received] PHST- 2020/06/13 00:00 [revised] PHST- 2020/07/08 00:00 [accepted] PHST- 2020/08/13 06:00 [pubmed] PHST- 2021/10/08 06:00 [medline] PHST- 2020/08/13 06:00 [entrez] AID - 10.1002/kjm2.12285 [doi] PST - ppublish SO - Kaohsiung J Med Sci. 2020 Dec;36(12):983-989. doi: 10.1002/kjm2.12285. Epub 2020 Aug 12.