PMID- 18497950 OWN - NLM STAT- MEDLINE DCOM- 20080807 LR - 20080523 IS - 1021-335X (Print) IS - 1021-335X (Linking) VI - 19 IP - 6 DP - 2008 Jun TI - HLA-B gene participates in the NF-kappaB signal pathway partly by regulating S100A8 in the laryngeal carcinoma cell line Hep2. PG - 1453-9 AB - Human leukocyte antigen B (HLA-B), a novel member of the NF-kappaB signal pathway in laryngeal squamous cell carcinoma (LSCC), mediates immunological surveillance of tumor cells by presenting peptides to cytotoxic T-lymphocytes (CTLs) together with S100 calcium binding protein A8 (S100A8). The objective of this study was to investigate the molecular mechanism of HLA-B and S100A8 in laryngeal carcinogenesis. Flow cytometry, 3-(4,5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2H-tetrazolium bromide (MTT) assay and cell invasion in vitro were used to detect the biological effect of the Hep2 cell line induced by HLA-B RNA interference. RT-PCR and Western blotting were applied to evaluate the expression level of the S100A8 gene after HLA-B RNA interference. Our results showed that HLA-B had negative effects on Hep2 cells by inhibiting apoptosis and cell invasion while decreasing cell proliferation. Additionally, the expression level of HLA-B and S100A8 in LSCC were down-regulated after HLA-B RNA interference. The abnormal expression of HLA-B is thus relevant to the biological effect of laryngeal carcinoma and participates in the NF-kappaB signal pathway partly by regulating the expression of the S100A8 gene. FAU - Guo, Yan AU - Guo Y AD - Department of Medical Genetics, China Medical University, Shenyang, PR China. FAU - Liu, Jia AU - Liu J FAU - Xu, Zhenming AU - Xu Z FAU - Sun, Kailai AU - Sun K FAU - Fu, Weineng AU - Fu W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Greece TA - Oncol Rep JT - Oncology reports JID - 9422756 RN - 0 (Calgranulin A) RN - 0 (HLA-B Antigens) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) RN - 0 (RNA, Small Interfering) SB - IM MH - Animals MH - Apoptosis/physiology MH - Blotting, Western MH - Calgranulin A/*metabolism MH - Cell Cycle MH - Cell Proliferation MH - Cells, Cultured MH - Flow Cytometry MH - HLA-B Antigens/*genetics MH - Humans MH - Laryngeal Neoplasms/genetics/*metabolism/pathology MH - Mice MH - NF-kappa B/*metabolism MH - NIH 3T3 Cells MH - Neoplasm Invasiveness MH - RNA, Messenger/genetics/metabolism MH - RNA, Small Interfering/pharmacology MH - Reverse Transcriptase Polymerase Chain Reaction MH - *Signal Transduction EDAT- 2008/05/24 09:00 MHDA- 2008/08/08 09:00 CRDT- 2008/05/24 09:00 PHST- 2008/05/24 09:00 [pubmed] PHST- 2008/08/08 09:00 [medline] PHST- 2008/05/24 09:00 [entrez] PST - ppublish SO - Oncol Rep. 2008 Jun;19(6):1453-9.