PMID- 38352733 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240215 IS - 2405-8440 (Print) IS - 2405-8440 (Electronic) IS - 2405-8440 (Linking) VI - 10 IP - 3 DP - 2024 Feb 15 TI - Bioinformatic analysis reveals prognostic value and immunotherapy potential of Siglec-15 in laryngeal squamous cell carcinoma. PG - e25266 LID - 10.1016/j.heliyon.2024.e25266 [doi] LID - e25266 AB - BACKGROUND: Laryngeal squamous cell carcinoma (LSCC) is the ultimate common malignant head and neck cancer with dismal prognosis. The expression pattern and clinical significance of Siglec-15 (Sialic acid-binding immunoglobulin-like lectin 15) in LSCC are poorly understood. In order to lay the groundwork for future immune-related research on Siglec-15 in LSCC, we set out to study its expression and prognostic importance in the disease, as well as to use bioinformatics to investigate the immune features modulated by Siglec-15 in LSCC. METHODS: 1 in circle In order to get the gene expression profile and clinical data for TCGA head and neck cancer (TCGA-HNSC), you may access the relevant data from UCSC xena and use 110 cases of laryngeal cancer as a training set. Two datasets, GSE27020 and GSE25727, were obtained from the GEO databank and utilized as validation sets. These datasets include expression profiles and clinical information. The Siglec-15 gene and immune characteristics were analyzed by bioinformatics methods. 2 in circle Retrospectively collected routine paraffin specimens from patients with pathological diagnosis of squamous cell carcinoma from December 2012 to November 2015 in Sun Yat-sen Memorial Hospital and fresh frozen tissue of patients from June 2021 to March 2022. Immunohistochemistry method, immunofluorescence technique and real-time quantitative PCR was used to examine the difference of Siglec-15 appearance in LSCC tissue and adjacent tissue, and its correlation of prognosis, clinic pathological characteristics and CD8+T lymphocyte infiltration. Using human laryngeal cancer cell line (LCC), we studied the influence of Siglec-15 in cell proliferation and invasion. RESULTS: We identified Siglec-15 was upregulated in LSCC. The patients in Siglec-15 high expression group had a poor overall survival (OS) based on the clinical information from TGCA and 111 LSCC patients that hospitalized in Sun Yat-sen Memorial Hospital. The COX regression analysis indicated Siglec-15 as an independent predictor for poor prognosis of LSCC. Bioinformatic analysis suggested that the high expression of Siglec-15 shape an immune suppressive tumor microenvironment (TEM), leading to poor response to immunotherapy in LSCC. Siglec-15 enhanced cell invasion and proliferation, as we showed in vitro. CONCLUSION: Our study support Siglec-15 as a potential predictor for LSCC prognosis and an attractive target for LSCC immunotherapy. CI - (c) 2024 The Authors. FAU - Chen, Xiaoting AU - Chen X AD - Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China. AD - Heyou Hospital, No. 1 of Heren Road, Junlan Community, Beijiao Town, Shunde District, Foshan City, Guangdong Province, China. FAU - Cai, Qian AU - Cai Q AD - Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China. FAU - Wong, Kaiyi AU - Wong K AD - Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China. FAU - Shen, Ximing AU - Shen X AD - Department of Pathology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China. FAU - Guan, Zhong AU - Guan Z AD - Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China. LA - eng PT - Journal Article DEP - 20240130 PL - England TA - Heliyon JT - Heliyon JID - 101672560 PMC - PMC10861961 OTO - NOTNLM OT - Bioinformatic analysis OT - Immune infiltration OT - Immunotherapy OT - Laryngeal squamous cell carcinoma OT - Siglec-15 COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2024/02/14 06:43 MHDA- 2024/02/14 06:44 PMCR- 2024/01/30 CRDT- 2024/02/14 03:57 PHST- 2023/09/20 00:00 [received] PHST- 2024/01/23 00:00 [revised] PHST- 2024/01/23 00:00 [accepted] PHST- 2024/02/14 06:44 [medline] PHST- 2024/02/14 06:43 [pubmed] PHST- 2024/02/14 03:57 [entrez] PHST- 2024/01/30 00:00 [pmc-release] AID - S2405-8440(24)01297-0 [pii] AID - e25266 [pii] AID - 10.1016/j.heliyon.2024.e25266 [doi] PST - epublish SO - Heliyon. 2024 Jan 30;10(3):e25266. doi: 10.1016/j.heliyon.2024.e25266. eCollection 2024 Feb 15.