PMID- 38538265 OWN - NLM STAT- MEDLINE DCOM- 20240329 LR - 20240403 IS - 2768-6698 (Electronic) IS - 2768-6698 (Linking) VI - 29 IP - 3 DP - 2024 Mar 22 TI - Identification of Down-Expressed CRNN Associated with Cancer Progression and Poor Prognosis in Laryngeal Squamous Cell Carcinoma. PG - 125 LID - 10.31083/j.fbl2903125 [doi] AB - BACKGROUND: The prevalence of laryngeal squamous cell carcinoma (LSCC) is increasing, and it poses a significant threat to human health; therefore, identifying specific targets for LSCC remains crucial. METHODS: Bioinformatics analysis was used to compare the different expression genes expressed in LSCC. Immunohistochemical assay and western blotting were used to analysis protein expression. Cell viability was measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide)((4,5 Dimethyl thiazol-2-Yl)-2,5-Diphenyltetrazolium Bromide)4,5 Dimethyl thiazol-2-Yl)-2,5-Diphenyltetrazolium Bromide (MTT) and 5-ethynyl 2'-deoxyuridine (Edu) assay. Flow cytometry was used to measure the cell cycle. Cell migration was measured by wound healing assay and transwell assay. RESULTS: Our analysis revealed 36 upregulated and 65 downregulated differentially expressed genes (DEGs) when comparing LSCC tumors to adjacent tissues, with cornulin (CRNN) identified as a key hub gene connecting these DEGs. We observed a consistent downregulation of CRNN expression in LSCC cell lines and tissues and was associated with poor patient survival and the tumor microenvironment. CRNN overexpression was found to significantly inhibit cell growth, cell cycle progression, migration and invasion, while CRNN knockdown had the opposite effects. Additionally, in vivo experiments demonstrated that CRNN overexpression suppressed tumor growth in nude mice. CONCLUSIONS: CRNN functions as a potential tumor suppressor and regulates important aspects of LSCC, providing valuable insights into the role of CRNN in LSCC pathogenesis and potential for targeted therapeutic interventions. CI - (c) 2024 The Author(s). Published by IMR Press. FAU - Hong, Feilong AU - Hong F AD - Department of Otolaryngology, Hangzhou Hospital of Zhejiang Medical and Health Group, 310022 Hangzhou, Zhejiang, China. FAU - Wan, Xuemei AU - Wan X AD - Department of Otolaryngology, Chengdu First People's Hospital, 610000 Chengdu, Sichuan, China. FAU - Bai, Yundan AU - Bai Y AD - Department of Health Management Medical Center, Chengdu First People's Hospital, 610000 Chengdu, Sichuan, China. LA - eng PT - Journal Article PL - Singapore TA - Front Biosci (Landmark Ed) JT - Frontiers in bioscience (Landmark edition) JID - 101612996 RN - 0 (Bromides) RN - 0 (MicroRNAs) SB - IM MH - Animals MH - Humans MH - Mice MH - Bromides/metabolism MH - *Carcinoma, Squamous Cell/metabolism MH - Cell Line, Tumor MH - Cell Proliferation/genetics MH - Gene Expression Regulation, Neoplastic MH - *Laryngeal Neoplasms/genetics/metabolism/pathology MH - Mice, Nude MH - *MicroRNAs/genetics MH - *Squamous Cell Carcinoma of Head and Neck/genetics/metabolism/pathology MH - Tumor Microenvironment OTO - NOTNLM OT - CRNN OT - cancer progression OT - laryngeal squamous cell carcinoma OT - poor prognosis COIS- The authors declare no conflict of interest. EDAT- 2024/03/28 00:44 MHDA- 2024/03/29 06:46 CRDT- 2024/03/27 22:23 PHST- 2023/11/09 00:00 [received] PHST- 2023/12/22 00:00 [revised] PHST- 2024/01/03 00:00 [accepted] PHST- 2024/03/29 06:46 [medline] PHST- 2024/03/28 00:44 [pubmed] PHST- 2024/03/27 22:23 [entrez] AID - S2768-6701(24)01191-2 [pii] AID - 10.31083/j.fbl2903125 [doi] PST - ppublish SO - Front Biosci (Landmark Ed). 2024 Mar 22;29(3):125. doi: 10.31083/j.fbl2903125.