The association of beta-site APP cleaving enzyme (BACE) C786G polymorphism with Alzheimer's disease.
The deposition of amyloid beta-peptide (Abeta) plays a crucial role in the pathogenesis of Alzheimer's disease (AD). Beta-site APP cleaving enzyme (BACE) is the rate-limiting enzyme in the Abeta formation. BACE mutations/polymorphisms may be associated with AD. We searched the BACE coding region mutations/polymorphisms of cDNA in 25 AD patients and 100 healthy controls by single-strand conformational polymorphism. A polymorphism at BACE coding region was identified and confirmed to be 786C/G polymorphism by nucleotide sequencing. Based on these findings, we investigated the association of this polymorphism with the occurrence of AD by PCR-RFLP. A total of 98 AD patients along with 138 controls were recruited in the present study. The allele frequencies of the 786C/G polymorphism were 0.622 for C and 0.378 for G in AD. In controls, the C and G allele frequencies were 0.691 and 0.309, respectively. No significant association of this polymorphism with the occurrence of AD can be established. Larger sample size may be necessary to identify other potential mutations/polymorphisms among BACE gene.
Liu
Hsing-Cheng
HC
Department of Neurology and Psychiatry, Taipei City Psychiatric Center, Taipei, Taiwan.
Leu
Sy-Jye
SJ
Chang
Jan-Gowth
JG
Sung
Shing-Ming
SM
Hsu
Wei-Chen
WC
Lee
Long-Shyong
LS
Hu
Chaur-Jong
CJ
D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D000544:Alzheimer Disease / Q000235:genetics*; D053829:Amyloid Precursor Protein Secretases; D016282:Aspartic Acid Endopeptidases / Q000235:genetics*; D010450:Endopeptidases; D005260:Female; D005787:Gene Frequency; D006801:Humans; D008297:Male; D011110:Polymorphism, Genetic
D053829:Amyloid Precursor Protein Secretases; D010450:Endopeptidases; D016282:Aspartic Acid Endopeptidases; C509280:BACE1 protein, human