Research Article

Identification of TNIP1 Polymorphisms by High Resolution Melting Analysis with Unlabelled Probe: Association with Systemic Lupus Erythematosus

Figure 1

SNP genotyping by HRM with unlabeled probe. (a) Derivative melting curves of unlabeled probe and amplicon for genotyping of SNP rs7708392. (b) Normalized difference curves of unlabeled probe region. (c) Normalized melting curves of unlabeled probe region. Unlike the classical SNP genotyping (wildtype, heterozygote, and homozygote), six types of curves were observed implying a new SNP also presented in probe region. (d) DNA sequencing result of SNP rs7708392. The sequencing was performed by using reverse primer of the PCR amplicon. The blue box indicates the SNP rs7708392 harbors G/C mutation by reverse sequencing. The red box shows that the polymorphism on the new SNP is C/T by reverse sequencing.
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