通过PLK1介导的PDHA1酸化驱动了肺癌中的代谢重编程
Jia Peng1, Qiongsi Zhang1, Xiongjian Rao1
1Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, USA.
Oncogene
|September 16, 2025
概括
波罗样类激酶1 (PLK1) 通过酸化PDHA1驱动癌症中的代谢重编程,将细胞从氧化酸化转移到糖解. 这种机制为肺癌治疗提供了新的治疗点.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 癌症新陈代谢 癌症新陈代谢
背景情况:
- 波罗样酶1 (PLK1) 参与了代谢重编程,将细胞从氧化酸化 (OXPHOS) 转移到糖解.
- 通过PLK1影响这种代谢开关的精确分子机制在很大程度上仍未定义.
- 酸盐脱酶 (PDH) 是一个关键的酶,它调节了酸盐进入三酸 (TCA) 循环的过程.
研究的目的:
- 阐明PLK1驱动的代谢重编程从OXPHOS到糖解的分子机制.
- 调查PDHA1酸化在氨酸57 (PDHA1-T57) 在这种代谢转变中的作用.
- 评估将PLK1抑制剂 (Onvansertib) 与PDH激酶 (PDK) 抑制剂 (二酸,DCA) 结合用于肺癌治疗的治疗潜力.
主要方法:
- 稳定同位素溶解代谢学 (SIRM) 用于分析代谢流量.
- 产生细胞系和模仿PDHA1-T57酸化的转基因小鼠.
- 结合Onvansertib和DCA的体内和体外研究,以评估对瘤生长的协同效应.
主要成果:
- 对PDHA1-T57的PLK1酸化促进了PDHA1的降解和从OXPHOS到糖解的代谢重编程.
- 具有PDHA1-T57酸化的细胞利用阿斯巴酸 - 酸穿越葡萄糖衍生的酸盐来维持TCA循环.
- 与Onvansertib和DCA的联合治疗协同抑制了肺瘤的生长,增强了线粒体活性氧物种 (ROS),降低了糖解,并诱导了亡.
结论:
- 通过PLK1介导的PDHA1酸化是肺癌发生过程中代谢重编程的关键驱动因素.
- 针对PLK1和PDK同时呈现为肺癌的有前途的治疗策略.
- 结果支持评估Onvansertib加DCA用于肺癌治疗的临床试验.
相关概念视频
PI3K/mTOR/AKT Signaling Pathway
5.4K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
5.4K
mTOR Signaling and Cancer Progression
4.6K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
4.6K
Interactions Between Signaling Pathways
7.2K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.2K
Protein Kinases and Phosphatases
15.0K
Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
15.0K
Adaptive Mechanisms in Cancer Cells
7.0K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
7.0K
Abnormal Proliferation
5.1K
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...
5.1K


