癌症,衰老和组织再生中的Wnt-NAD轴
在PubMed上查看摘要
概括
此摘要是机器生成的。Wnt-NAD+轴对组织再生和抗衰老至关重要. 了解这种联系为与年龄相关的疾病提供了新的治疗策略.
科学领域
- 生物化学
- 细胞生物学
- 老年学
背景情况
- Wnt信号调节细胞增殖,分化和组织平衡.
- 尼古丁胺二核酸 (NAD+) 代谢对于细胞能量和基因组稳定性至关重要.
- 通过共享的调节分子,Wnt和NAD+通路相互连接.
研究的目的
- 审查目前对Wnt-NAD+轴的理解.
- 突出这一轴在组织完整性和衰老中的合作作用.
- 探索针对再生医学的Wnt-NAD+轴的治疗策略.
主要方法
- 对Wnt信号传递和NAD+代谢研究的文献综述.
- 分析涉及素,PARP和代谢酶的共享调节途径.
- 巩固关于轴在衰老和再生中的作用的知识.
主要成果
- Wnt-NAD+轴是细胞衰老和再生过程的关键调节器.
- 这一轴的失调与癌症,与年龄相关的衰退和受损的组织修复有关.
- 涉及素和PARP的共享途径调解了Wnt信号和NAD+水平之间的相互作用.
结论
- 在保持组织健康和抗衰老方面,Wnt-NAD+轴起着合作作用.
- 针对这一轴,为与年龄相关的疾病提供了有前途的治疗途径.
- 恢复Wnt-NAD+平衡可以增强组织修复和再生能力.
相关概念视频
The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which...
Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
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...
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
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,...

