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在基甲基比兰合成酶基因中的八种拼接变体的分子分析

Yi Ren¹, Jiajia Wang², Shuang Li³

¹Department of Endocrinology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China.

Frontiers in genetics

|December 11, 2023

概括

一个新的小基因试验验证了八种甲基比兰合成酶 (HMBS) 基因变异,包括一个新的,导致急性间歇性皮症 (AIP) 的拼接缺陷. 这项研究为了解AIP病原和开发基因治疗提供了基础.

科学领域:

遗传学是一个遗传学.
分子生物学分子生物学
人类疾病遗传学人类疾病遗传学

背景情况:

急性间歇性病 (AIP) 是一种罕见的自体优势性疾病.
氧甲基比兰合成酶 (HMBS) 基因突变导致AIP.
大约20%的HMBS变体影响RNA前剪接,这给诊断带来了挑战.

研究的目的:

调查与AIP相关的八种HMBS拼接变种的致病性.
为了在HMBS基因中验证一种新的异合体变异 (c.160 + 5G>C).
建立一种可靠的体外方法来评估HMBS拼接变体的影响.

主要方法:

下一代测序用于识别新型HMBS变种.
在体外小型基因试验分析八种HMBS变体的拼接缺陷.
为了验证,对外围血液淋巴细胞进行RNA测序.

主要成果:

所有八种测试的HMBS变体都在mRNA前显示了拼接缺陷.
具体的拼接异常包括内子保留和外子删除.
新型变异c.160 + 5G>C显示了内部保留,由RNA测序证实.

结论:

微基因试验有效评估了HMBS变体的拼接效应.
一种新的HMBS拼接变种 (c.160 + 5G>C) 被确定并验证.
这项研究为AIP病变研究和潜在的基因治疗策略提供了分子基础.

关键词:

急性间歇性形性形症急性间歇性形症氧甲基比兰合成酶基因基因迷你基因是一种微型基因.分子分析分子分析波尔菲利亚 Porphyria 是一个疾病.拼接突变的突变

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RNA Splicing

RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...

Alternative RNA Splicing

Alternative RNA Splicing

Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...