人体内源逆转录病毒 (HERVs) 与质母细胞瘤风险和预后相关
Harun Mazumder1, Hui-Yi Lin1,2, Melody Baddoo3
1Biostatistics Program, Louisiana State University Health Sciences Center, School of Public Health, New Orleans, LA, USA.
Cancer gene therapy
|May 19, 2025
概括
人体内源性逆转录病毒 (HERV) 表达与多形质母细胞瘤 (GBM) 的进展有关. 一个新的HERV评分算法确定了GBM的潜在生物标志物,但不是低级质瘤 (LGG).
科学领域:
- 神经瘤学神经瘤学
- 基因组学就是基因组学.
- 复原病毒研究研究.
背景情况:
- 人体内源逆转录病毒 (HERVs) 越来越多地与多种质母细胞瘤 (GBM) 病原和进展有关.
- 在HERV表达模式和GBM恶性表型之间的确切关系仍然不完全理解.
研究的目的:
- 研究HERV表达与质瘤亚型 (GBM,低度质瘤[LGG],正常大脑[NB]) 之间的关联.
- 开发基于HERV的评分系统,用于质瘤分类和预后预测.
- 探索失调的HERV和与GBM相关的基因之间的功能联系.
主要方法:
- 在基因分析的癌症基因组图谱 (TCGA) 数据.
- 导出用于质瘤的特定位置的HERV转录组.
- 开发和验证一个HERV评分算法.
- 在HERV得分,生存数据和基因本体学丰富之间进行相关性分析.
主要成果:
- 与NB和LGG相比,在GBM中鉴定了211个显著失调的HERV.
- 开发了一种HERV评分算法,可以有效区分GBM,LGG和NB.
- 在GBM患者中观察到较低的HERV得分和降低的存活率之间的相关性.
- 发现HERV评分对LGG存活或进展的预测能力较低.
- 链接失调的HERV与18个电压关闭通道基因.
结论:
- 在GBM中,HERV表达特征显著改变,可以作为疾病分类的潜在生物标志物.
- 开发的HERV评分算法显示了对GBM预后的前景.
- 鉴定出HERVs与通道之间的功能联系为GBM病原和潜在的治疗标提供了新的见解.
相关概念视频
Retroviruses
12.1K
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
12.1K
Non-LTR Retrotransposons
11.3K
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...
11.3K
Mechanisms of Retrovirus-induced Cancers
5.0K
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
5.0K
Rous Sarcoma Virus (RSV) and Cancer
4.9K
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
4.9K
The Retinoblastoma Gene
4.0K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
4.0K


