Abstract：
:Osteogenesis imperfecta (OI), a congenital bone disorder, is caused by mutations in COL1A1 and COL1A2 genes, leading to deficiency of type I collagen. The high resolution melting (HRM) analysis has been used for detecting mutations, polymorphisms and epigenetic alteration in double-stranded DNAs. This study was to evaluate the potential application of HRM analysis for identifying gene mutations in patients with OI. This study included four children with OI and their parents and fifty normal people as controls. Blood samples were collected for HRM analysis of PCR-amplified exons and flanking DNA sequences of COL1A1 and COL1A2 genes. Direct gene sequencing was performed to validate HRM-identified gene mutations. As compared to controls, HRM analysis of samples form children with OI showed abnormal melting curves in exons 11 and 33-34 of the COL1A1 gene and exons 19 and 48 of the COL1A2 gene, which indicates the presence of heterozygous mutations in COL1A1 and COL1A2 genes. In addition to two known mutations in the COL1A2 gene, c.982G > A and c.3197G > T, sequencing analysis identified two novel mutations in the COL1A1 gene, c.2321delC and c.768dupC mutations, which function as premature stop codons. These results support future studies of applying HRM analysis as a diagnostic approach for OI.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang J,Ren X,Bai X,Zhang T,Wang Y,Li K,Li Gdoi
10.1038/srep13468subject
Has Abstractpub_date
2015-08-26 00:00:00pages
13468issn
2045-2322pii
srep13468journal_volume
5pub_type
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