5-氧甲基细胞蛋白:癌症和化疗反应中的关键表观遗传标记
Suhas S Kharat1, Shyam K Sharan2
1Department of Biochemistry, Vanderbilt University, Nashville, TN, 37240, USA. suhas.s.kharat@vanderbilt.edu.
Epigenetics & chromatin
|November 16, 2025
概括
5甲基细胞蛋白 (5hmC) 是一个关键的表观遗传标记,调节基因表达和发育. 异常的5hmC水平与癌症有关,为诊断和治疗提供了潜力.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
- 分子瘤学分子瘤学
背景情况:
- 5甲基细胞氨酸 (5hmC) 是一种表观遗传修饰,对基因调节和细胞过程至关重要.
- 最初被视为脱甲基化中间体,5hmC现在被认为是一种稳定,功能显著的表观遗传标记.
- 它独特的基因组分布和调节作用在正常发育和疾病中至关重要.
研究的目的:
- 综合审查5hmC在正常细胞过程中的生物功能.
- 阐明5hmC在癌症中的作用,包括其机械基础和对瘤发生的贡献.
- 探索5hmC作为瘤学中的生物标志物和治疗点的潜力.
主要方法:
- 对5hmC生物学,癌症表观遗传学和治疗策略的现有文献的审查.
- 分析5hmC在基因表达,分化和基因组完整性中的作用.
- 检查5hmC在癌症信号传递,转移和异质性中的参与.
主要成果:
- 5hmC在组织特异性基因表达,血统承诺和基因组稳定性方面发挥着关键作用.
- 瘤中5hmC的损失或再分配有助于瘤致癌途径和瘤异质性.
- 5hmC水平与癌症诊断,预后和药物反应相关.
结论:
- 5hmC是一种多方面的表观遗传调节剂,对人类恶性瘤有重大影响.
- 异常的5hmC模式为癌症诊断和预后提供了潜在的生物标志物.
- 针对5hmC途径在精密瘤学中提供了有前途的治疗机会.
相关概念视频
Epigenetic Regulation
3.7K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.7K
Epigenetic Regulation
33.4K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.4K
Treatment Resistant Cancers
3.7K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.7K
Adaptive Mechanisms in Cancer Cells
6.9K
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,...
6.9K
Induced Pluripotent Stem Cells
5.4K
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
Somatic...
5.4K
Cancer Stem Cells and Tumor Maintenance
5.8K
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
5.8K


