通过干扰细胞信号通路来调节MGMT表达
Peiying Bai1, Tengjiao Fan2, Xin Wang3
1Beijing Key Laboratory of Environmental and Viral Oncology, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
对DNA化剂的化学抵抗通常是由O6-甲基瓜氨酸-DNA甲基转移酶 (MGMT) 引起的. 通过细胞信号通路准MGMT表达提供了一种有前途的策略,以提高化疗的疗效和克服瘤耐药性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 关氨酸O6化剂是诱导DNA损伤的关键化疗剂.
- 瘤对这些药物的耐药性通常由O6-甲基氨酸-DNA甲基转移酶 (MGMT) 介导.
- MGMT修复致命的O6-基瓜氨酸添加物,使癌细胞能够逃避亡并发展抗药性.
研究的目的:
- 解决当前MGMT抑制剂的局限性,例如O6-基氨酸 (O6-BG) 和O6-(4-基氨酸 (O6-4-BTG),它们会引起显著的毒性.
- 探索克服MGMT介导化学抵抗的新型治疗策略.
- 调查向细胞信号通路调节MGMT表达的潜力.
主要方法:
- 审查关于DNA化剂,MGMT和化学抵抗机制的现有文献.
- 对MGMT抑制剂的疗效和毒性临床数据的分析.
- 在MGMT调控中涉及的细胞信号通路 (Wnt/β-catenin,NF-κB,Hedgehog,PI3K/AKT/mTOR,JAK/STAT) 的探索.
主要成果:
- 由于严重的延迟血液毒性,O6-BG和O6-4-BTG的临床效用有限.
- 在修复DNA损伤和赋予抗性方面,MGMT的作用已经得到了很好的证实.
- 几个细胞信号通路都与MGMT表达的调节有关.
结论:
- 迫切需要替代策略来克服MGMT介导的化学抵抗.
- 通过特定的细胞信号通路针对MGMT表达的调节是一个有希望的方法.
- 干扰这些通路可能会提高化学疗法中DNA化剂的疗效.
更多相关视频
09:32Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development
Published on: June 15, 2017
09:44High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes
Published on: March 3, 2015
相关概念视频
Interactions Between Signaling Pathways
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...
Diversity in Cell Signaling Responses
Graded and Abrupt Responses
Some signaling systems generate...
Regulation of Expression at Multiple Steps
Amplifying Signals via Enzymatic Cascade
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
TGF - β Signaling Pathway
