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HEREDITAS ›› 2010, Vol. 32 ›› Issue (8): 817-823.doi: 10.3724/SP.J.1005.2010.00817

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Mutation analysis of LITAF, RAB7, LMNA and MTMR2 genes in Chinese Charcot-Marie-Tooth disease

ZHANG Ru-Xu1, GUO Peng2, REN Zhi-Jun2, ZHAO Guo-Hua2, LIU San-Mei1,LIU Ting1, ZI Xiao-Hong1, HU Zheng-Mao3, XIA Kun3, TANG Bei-Sha2   

  1. 1. Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha 410013, China; 2. Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, China; 3. National Key Laboratory of Medical Genetics, Central South University, Changsha 410078, China
  • Received:2009-10-30 Revised:2010-03-24 Online:2010-08-20 Published:2010-08-23
  • Contact: ZHANG Ru-Xu E-mail:ruxu.zhang@yahoo.com.cn

Abstract: The purpose of this study was to understand the mutation features of lipopolysaccharide-induced tumor necrosis factor-alpha factor (LITAF), ras-associated protein RAB7 (RAB7), lamin A/C (LMNA) and myotubularin-related protein 2 (MTMR2) genes in Chinese Charcot-Marie-Tooth disease (CMT) patients. Mutation analysis of LITAF gene was carried out using PCR combined with DNA sequencing, and mutation analysis of RAB7 gene by PCR-single strand conformation polymorphism (PCR-SSCP) combined with DNA sequencing in 33 CMT patients including 6 probands of autosomal domi-nated CMT families and 27 sporadic patients; mutation analysis of LMNA and MTMR2 genes was observed using PCR-SSCP combined with DNA sequencing in 41 CMT patients, including 14 probands of autosomal recessive CMT fami-lies and 27 sporadic patients. Two sequence variations c.269G→A and c.274A→G were detected in LITAF gene and two sequence variations c.1243G→A and c.1910C→T were detected in LMNA gene. No sequence variation was found in RAB7 and MTMR2 gene. Variations of c.269G→A in LITAF gene and c.1243G→A, c.1910C→T in LMNA gene are newly found SNPs in this study. Variation of c.274A→G in LITAF gene is known SNP reported in SNP database. Mutations in LITAF, RAB7, LMNA, and MTMR2 genes are rare in Chinese CMT patients.

Key words: Charcot-Marie-Tooth disease, lipopolysaccharide-induced tumor necrosis factor-alpha factor, lamin a/c, myotubularin-related protein 2, gene mutation, ras-associated protein rab7