在人类Chk1,Chk2和Wee1蛋白激酶中发现的有害突变的基和基于结构的评估
Venessa Colaco1, Nabajyoti Goswami1, Vijay Kumar Goel2
1Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra, India.
Journal of cellular biochemistry
|December 4, 2023
概括
这项研究确定了检查点激酶Chk1,Chk2和Wee1中的致病突变,这对DNA损伤反应至关重要. 这些变异影响蛋白质结构和功能,为癌症管理提供潜在的治疗点.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 生物信息学是一种生物信息学.
背景情况:
- 检查点激酶 (Chk1,Chk2,Wee1) 对于在DNA损伤反应期间保持基因组完整性至关重要.
- 这些激酶中与癌症相关的突变可以破坏正常的细胞功能.
- 了解这些突变的功能影响对于治疗开发至关重要.
研究的目的:
- 使用in silico和基于结构的方法识别和描述人类Chk1,Chk2和Wee1中的有害变异.
- 分析这些突变对蛋白质折叠模式和结构完整性的影响.
- 根据已识别的突变,确定潜在的治疗点.
主要方法:
- 从数据库中检索了对Chk1,Chk2和Wee1具有不确定的意义的变体.
- 使用多个in silico预测服务器 (Interpro,I-Mutant 3.0,Consurf,TM-align) 来评估变体的致病性.
- 使用序列分析 (Clustal Omega) 和3D结构对齐 (TM-align).
- 进行了分子动力学模拟,以评估野生类型和突变蛋白质的折叠模式和结构完整性.
主要成果:
- 在Chk1中确定了36种致病变体,在Chk2中250种,在Wee1中使用in silico工具确定了29种.
- 在Chk1中发现了25个高度保存的有害突变,在Chk2中发现了189个,在Wee1中发现了14个影响蛋白质结构和功能的突变.
- 分子动力学模拟揭示了野生型和突变型蛋白质之间的折叠模式的显著差异.
结论:
- 该研究成功地确定了Chk1,Chk2和Wee1.1.中的许多致病和有害突变.
- 这些突变显著影响蛋白质结构和功能,可能有助于癌症的发展.
- 鉴定的突变代表了新的治疗干预和改进的临床管理策略的潜在目标.
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