[人类乳头瘤病毒:起源,瘤因子和查宫癌的标志物]
Virologie (Montrouge, France)
|December 21, 2024
概括
人类乳头瘤病毒 (HPV),特别是HPV16,是导致宫癌的主要原因. 病毒瘤基因E6/E7和基因组变化,如整合和甲基化驱动瘤发生,提供潜在的查标志物.
科学领域:
- 病毒学 病毒学
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
背景情况:
- 人类乳头瘤病毒 (HPV) 与人类共同进化,已确定超过200种基因型.
- 高风险HPV (HPV-HR),特别是HPV16,是全球宫癌的主要原因.
- HPV-HR的E6/E7瘤原蛋白对病毒瘤发生至关重要,并且在宫癌中得到一致的表达.
研究的目的:
- 探索HPV驱动瘤发生的复杂机制,专注于HPV16.
- 研究病毒遗传因素,包括突变,拼接,整合和甲基化在宫癌发展中的作用.
- 评估这些病毒学标志物的潜力,以提高宫癌查.
主要方法:
- 对病毒瘤基因E6/E7及其与宿主蛋白p53和pRb的相互作用进行分析.
- 研究HPV基因组变异,包括mRNA剪接,病毒DNA集成 (E1/E2区域) 和L1/L2高甲基化.
- 审查检测这些病毒标记物的方法.
主要成果:
- HPV16 E6/E7蛋白对p53和pRb具有很高的亲和力,这对细胞控制至关重要.
- 在E6/E7的突变与持久性感染和特定的病毒系相关.
- 病毒基因组的改变,如E1/E2整合和L1/L2高甲基化,有助于瘤发生,特别是在晚期.
结论:
- HPV 瘤发生涉及复杂的病毒和宿主因素,E6/E7 蛋白质起着中心作用.
- 病毒遗传标记,包括突变,剪接,整合和甲基化模式,都与宫癌的进展有关.
- 这些病毒学标志物可能会在宫癌查计划中增强目前的HPV-HR检测方法.
更多相关视频
06:57Chromogenic In Situ Hybridization as a Tool for HPV-Related Head and Neck Cancer Diagnosis
Published on: June 14, 2019
10.3K
07:43Four-color Fluorescence Immunohistochemistry of T-cell Subpopulations in Archival Formalin-fixed, Paraffin-embedded Human Oropharyngeal Squamous Cell Carcinoma Samples
Published on: July 29, 2017
9.6K
相关概念视频
Cancer Prevention
6.0K
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
6.0K
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
Cancer Vaccines
338
Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
338
Mutagenicity and Carcinogenicity
1.2K
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
1.2K
Cancer-Critical Genes I: Proto-oncogenes
8.7K
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
8.7K
