通过达克斯介导的MDM2-p53通路,HPV16 E6和克拉米迪亚形虫Pgp3蛋白质可以抑制TNF-α诱导的亡
Yaqi Liao1, Ranzhong Chen2, Erqun Tang2
1Institute of pathogenic Biology Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China; Department of Clinical Laboratory, Hanshou People's Hospital, Changde, 415900, Hunan, China.
Microbial pathogenesis
|June 29, 2025
概括
人类乳头瘤病毒 (HPV) 16E6和克拉米迪亚形虫 (C. trachomatis) Pgp3蛋白质通过Daxx-MDM2-p53通路抑制细胞亡. 这一发现提供了关于HPV和C. trachomatis在宫癌进展中的共感染的见解.
科学领域:
- 在瘤学瘤学.
- 病毒学 病毒学
- 微生物学 微生物学
背景情况:
- 宫癌通常与持续的HPV感染有关.
- 甲状腺炎 (C. trachomatis) 可能作为宫癌进展的辅因子.
- 导致HPV和C. trachomatis的协同作用的分子机制尚未完全理解.
研究的目的:
- 为了调查HPV16 E6和C. trachomatis Pgp3蛋白质是否抑制了亡.
- 要确定这种抑制是否通过达克斯介导的MDM2-p53通路发生.
- 阐明它们在宫癌中的协同作用的潜在分子机制.
主要方法:
- 利用HeLa细胞模型评估HPV16 E6和PGp3对Daxx表达和MDM2-p53通路的影响.
- 采用达克斯干扰,TNF-α诱导的亡试验和Nutlin-3a治疗来验证关键的分子功能.
主要成果:
- HPV16 E6 和 C. trachomatis Pgp3 单独或协同调节达克斯表达,可能增强细胞亡抑制.
- 达克斯干扰部分逆转了亡抑制,这表明它在促进MDM2酸化和p53降解方面发挥了作用.
- 努特林-3a治疗减弱了细胞灭亡抑制作用,证实了MDM2-p53通路的参与.
结论:
- 通过Daxx介导的MDM2-p53通路,HPV16 E6和C. trachomatis Pgp3抑制了TNF-α诱导的亡.
- 这种机制为了解HPV和C. trachomatis联合感染在子宫癌进展中的作用提供了基础.
相关概念视频
Abnormal Proliferation
4.6K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.6K
The Intrinsic Apoptotic Pathway
6.9K
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.9K
Negative Regulator Molecules
36.1K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
36.1K
The Extrinsic Apoptotic Pathway
6.6K
The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
6.6K


