PMID- 34938657 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211224 IS - 2234-943X (Print) IS - 2234-943X (Electronic) IS - 2234-943X (Linking) VI - 11 DP - 2021 TI - Overexpression of B7-H3 Is Associated With Poor Prognosis in Laryngeal Cancer. PG - 759528 LID - 10.3389/fonc.2021.759528 [doi] LID - 759528 AB - The immune checkpoint molecule, B7-H3, which belongs to the B7 family, has been shown to be overexpressed in various cancers. Its role in tumors is not well defined, and many studies suggest that it is associated with poor clinical outcomes. The effect of B7-H3 on laryngeal cancer has not been reported. This study investigated the expression of B7-H3 in laryngeal squamous cell carcinoma (LSCC), and its relationship with clinicopathological factors and prognosis of LSCC patients. The gene expression quantification data and clinical data of LSCC retrieved from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) database were analyzed to determine the diagnostic and prognostic roles of B7-H3. Quantitative real-time polymerase chain reaction (qRT-PCR) was then performed to determine the gene expression level of B7-H3 between LSCC tissues and paired normal adjacent tissues. In addition, TCGA RNA-seq data was analyzed to evaluate the expression level of B7 family genes. Next, the protein expression of B7-H3 and CD8 in LSCC was determined using immunohistochemistry and immunofluorescence. qRT-PCR results showed that the expression level of B7-H3 mRNA was significantly higher in LSCC tissues than in adjacent normal tissues. Similar results were obtained from the TCGA analysis. The expression of B7-H3 was significantly associated with T stage, lymph node metastasis, and pathological tumor node metastasis (TNM) stage, and it was also an independent factor influencing the overall survival time (OS) of patients with LSCC. In addition, B7-H3 was negatively correlated with CD8(+)T cells. These results show that B7-H3 is upregulated in LSCC. Therefore, B7-H3 may serve as a biomarker of poor prognosis and a promising therapeutic target in LSCC. CI - Copyright (c) 2021 Li, Cai, Shen, Chen and Guan. FAU - Li, Yixuan AU - Li Y AD - Department of Otolaryngology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China. FAU - Cai, Qian AU - Cai Q 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 - Chen, Xiaoting AU - Chen X AD - Department of Otolaryngology, 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 - 20211206 PL - Switzerland TA - Front Oncol JT - Frontiers in oncology JID - 101568867 PMC - PMC8685272 OTO - NOTNLM OT - B7-H3 OT - LSCC - laryngeal squamous cell carcinoma OT - biomarker OT - diagnosis OT - prognosis COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/12/24 06:00 MHDA- 2021/12/24 06:01 PMCR- 2021/01/01 CRDT- 2021/12/23 05:52 PHST- 2021/08/16 00:00 [received] PHST- 2021/10/12 00:00 [accepted] PHST- 2021/12/23 05:52 [entrez] PHST- 2021/12/24 06:00 [pubmed] PHST- 2021/12/24 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fonc.2021.759528 [doi] PST - epublish SO - Front Oncol. 2021 Dec 6;11:759528. doi: 10.3389/fonc.2021.759528. eCollection 2021.