偏远,非编码,促进体相互作用区域的黑色素瘤特异性突变热点涉及新型候选驱动基因
Michael Pudjihartono1,2, Nicholas Pudjihartono1, Justin M O'Sullivan3,4,5,6,7
1Liggins Institute, The University of Auckland, Auckland, New Zealand.
British journal of cancer
|October 4, 2024
概括
研究人员在黑色素瘤中发现了新的非编码突变热点,发现了超出TERT促销者的新驱动因素. 这些发现增强了对黑色素瘤遗传格局和监管网络中断的理解.
科学领域:
- 基因组学就是基因组学.
- 癌症生物学 癌症生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 识别黑色素瘤的遗传驱动因素是针对性治疗的关键.
- 非编码区域,特别是遥远的监管元素,仍未得到充分探索.
- 以前的研究集中在基因相邻的元素上,忽视了基因间区域.
研究的目的:
- 在黑色素瘤中绘制遥远的,非编码的,促进体相互作用的调节元件.
- 在这些调节元素中识别新的体质突变热点.
- 了解非编码突变如何影响基因表达和黑色素瘤的发展.
主要方法:
- 利用Hi-C染色体接触数据,在全基因组范围内绘制调节元素的图.
- 综合的全基因组测序和基因表达数据.
- 采用多变量线性回归来将突变与促进子活动联系起来.
主要成果:
- 在远端调节元件中确定了八个新的黑色素瘤特异性突变热点.
- 这些热点改变了转录因子结合基因.
- 受影响的基因 (例如,HSPB7,CLDN1) 作为瘤抑制剂或瘤基因,与癌症有关.
结论:
- 在黑色素瘤中发现了超出TERT促进者的非编码驱动因素.
- 揭示了非编码突变如何破坏复杂的监管网络.
- 提供了一个框架,使用综合数据发现癌症特异性非编码驱动因素.
更多相关视频
相关概念视频
lncRNA - Long Non-coding RNAs
8.5K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
8.5K
Non-LTR Retrotransposons
11.4K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
11.4K
The Eukaryotic Promoter Region
16.2K
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
16.2K
Mismatch Repair
4.8K
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
4.8K


