PMID- 18841572 OWN - NLM STAT- MEDLINE DCOM- 20090325 LR - 20081008 IS - 1003-9406 (Print) IS - 1003-9406 (Linking) VI - 25 IP - 5 DP - 2008 Oct TI - [The mutation and expression of MUS81 gene in laryngeal squamous cell carcinoma]. PG - 560-5 AB - OBJECTIVE: To investigate the association of mutations and expression of MUS81 gene with the tumorigenesis and progression of laryngeal squamous cell carcinoma (LSCC). METHODS: PCR-SSCP and DNA sequencing were carried out to examine mutations at exons 9 and 10 of MUS81 gene in 42 LSCC samples, with paired adjacent normal laryngeal tissues (PANLs) as control. Semi-quantitative RT-PCR and Western blot were used to detect the expression of MUS81 gene in the specimens. RESULTS: No mutation was detected in the control group. Among the 42 LSCC specimens, nineteen (45.2%) were found to harbor mutations, including 11(26.2%) occurring within exon 9, and 8 (19%) within exon 10. Seventeen (40.48%) samples showed lower mRNA level of the MUS81 gene (P<0.01), and same proportion of samples had lower protein level (P<0.01), suggesting that MUS81 gene was similarly down-regulated at both mRNA and protein levels in the LSCC samples. Furthermore, mutations of MUS81 gene did not significantly correlate with TNM stages, age and lymphoid node metastasis (P>0.05). Nor did the expression of MUS81 gene with the TNM stages, age and lymphoid node metastasis in LSCC (P>0.05). CONCLUSION: Mutations and abnormal expression of MUS81 gene in the LSCC tissues were observed, which suggested that abnormalities of MUS81 gene may play an important role in the tumorigenesis of LSCC. FAU - Li, Chanyuan AU - Li C AD - Department of Medical Genetics, China Medical University, Shenyang, Liaoning 110001, P.R. China. FAU - Wang, Shuyun AU - Wang S FAU - Yuan, Haiming AU - Yuan H FAU - Li, Wei AU - Li W FAU - Li, Zizheng AU - Li Z FAU - Li, Xiaoyu AU - Li X FAU - Guo, Xing AU - Guo X FAU - Li, Fucai AU - Li F LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Yi Xue Yi Chuan Xue Za Zhi JT - Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics JID - 9425197 RN - 0 (DNA-Binding Proteins) RN - 0 (RNA, Messenger) RN - EC 3.1.- (Endonucleases) RN - EC 3.1.- (MUS81 protein, human) SB - IM MH - Age Factors MH - Base Sequence MH - Carcinoma, Squamous Cell/*genetics/pathology MH - DNA-Binding Proteins/*genetics MH - Endonucleases/*genetics MH - Exons/genetics MH - *Gene Expression Regulation, Neoplastic MH - Humans MH - Laryngeal Neoplasms/*genetics/pathology MH - Lymphatic Metastasis/genetics MH - Molecular Sequence Data MH - *Mutation MH - Neoplasm Staging MH - RNA, Messenger/genetics/metabolism EDAT- 2008/10/09 09:00 MHDA- 2009/03/26 09:00 CRDT- 2008/10/09 09:00 PHST- 2008/10/09 09:00 [pubmed] PHST- 2009/03/26 09:00 [medline] PHST- 2008/10/09 09:00 [entrez] AID - 940625122 [pii] PST - ppublish SO - Zhonghua Yi Xue Yi Chuan Xue Za Zhi. 2008 Oct;25(5):560-5.