Home    中文  
 
  • Search
  • lucene Search
  • Citation
  • Fig/Tab
  • Adv Search
Just Accepted  |  Current Issue  |  Archive  |  Featured Articles  |  Most Read  |  Most Download  |  Most Cited

Chinese Journal of Ophthalmologic Medicine(Electronic Edition) ›› 2019, Vol. 09 ›› Issue (02): 96-104. doi: 10.3877/cma.j.issn.2095-2007.2019.02.006

• Original Article • Previous Articles     Next Articles

High-risk pathogenic phenotype predictions of non-synonymous single nucleotide polymorphisms in human heat shock transcription factor 4 gene associated with congenital cataract

Xiaotong Yu1, Zhengyu Wang2, Chen Huang3, Huibin Lyn2, Mingzhou Zhang2, Xuemin Li2,()   

  1. 1. Medical Research Center, Peking University Third Hospital, Beijing 100191, China
    2. Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China
    3. Medical Research Center, Peking University Third Hospital, Beijing 100191, China; Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China
  • Received:2019-01-31 Online:2019-04-28 Published:2022-03-23
  • Contact: Xuemin Li

Abstract:

Objective

The aim of this study was to systematically integrate and collect non-synonymous single nucleotide polymorphism (nsSNP) information of heat shock transcription factor 4 (HSF4) gene in single nucleotide polymorphism database and literature, and screen nsSNP loci with high risk of pathogenicity.

Methods

The nsSNP data of HSF4 gene were collected from dbSNP database, ClinVar database, HGMD database, DisGeNET database and published literature. The pathogenicity was predicted and analyzed by 6 software tools including Mutpred2, PANTHER-PSEP, PhD-SNP, PolyPhen 2.0, PROVEAN and SIFT. The high-risk pathogenic nsSNP was screened. I-Mutant 2.0, MUpro and INPS online software tools were used to compare the effects of amino acid substitution on protein stability. ConSurf, The Self-Optimized Prediction Method With Alignment (SOPMA) and Have (y)Our Protein Explained (HOPE) online software tools were used to predict the conservativeness of amino acid evolution, physicochemical properties and changes of protein structure before and after mutation.

Results

31 HSF4b high-risk pathogenic nsSNPs were obtained by searching the mentioned databases and analyzing the results of genetic mutation pathogenicity prediction software tools. Among them, 11 nsSNPs were reported to be associated with congenital cataract and 20 were newly predicted high-risk pathogenic nsSNPs. High-risk pathogenic nsSNPs could cause 25 wild-type amino acids to be replaced by 31 mutant amino acids, and 25 mutant amino acids could be predicted to lead to decline the stability of protein. The other 24 wild-type amino acids were highly evolutionary conservative sites except 39 tryptophan. Twenty sites were located in the heat shock transcription factor DNA binding domain and five in the hydrophobic repeat sequence HR-A/B and became high-risk pathogenic nsSNPs. It is predicted that the mutation of amino acids in these high-risk pathogenic sites could cause changes in the physical and chemical properties of amino acids and proteins, resulting in changes in secondary and tertiary structures of proteins and interaction effects between domains and other molecules, and thus affecting the function of proteins.

Conclusions

31 high-risk pathogenic nsSNPs of HSF4 gene were predicted and screened in this study. Among of them, 20 high-risk pathogenic nsSNPs were reported for the first time. These high-risk pathogenic nsSNPs might be important involved in the pathogenesis of congenital cataract and provide an important reference for clinical trials and theory studies.

Key words: Congenital cataract, Heat shock transcription factor 4, Non-synonymous single nucleotide polymorphism, Pathogenicity prediction, Bioinformatics

Copyright © Chinese Journal of Ophthalmologic Medicine(Electronic Edition), All Rights Reserved.
Tel: 0086-10-58269646 E-mail: zhykyxzz@163.com
Powered by Beijing Magtech Co. Ltd