Understanding how to target cell vulnerabilities induced by high Notch signalling as a potential anti-cancer strategy.
了解如何将高 Notch 信号传导引起的细胞脆弱性作为潜在的抗癌策略。
基本信息
- 批准号:2627915
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:英国
- 项目类别:Studentship
- 财政年份:2021
- 资助国家:英国
- 起止时间:2021 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Notch is a transmembrane localised signalling receptor utilised both in development and adult stem cell regulation and whose misregulation is frequently involved in different human cancers. Notch is activated by proteolytic removal of the extracellular domain (NECD) and subsequent gamma-secretase dependent intramembrane cleavage to release the Notch intracellular domain (NICD). Once in the nucleus NICD combines with a transcription factor Su(H)/CBF and the complex along with recruited coactivators activates gene-specific transcription. The outcomes are context-dependent and Notch plays many roles in development affecting different cell fate, proliferation and cell death/survival, decisions across many tissues. Notch signalling has been linked to cancer stem cell regulation and therefore it makes Notch an attractive target for therapies that control its signal activity. There are already some drugs which target high Notch signalling but a number of trials have not ben successful because there are unacceptable side effects. In this project the strategy is being developed ovecome this by using Notch instead as a biomarker to determine which tumours are sensitive to targeting other components that will kill the tumour cell but leave normal cells unaffected. Using a whole genome screen in a Drosophila cell culture model system we have identified candidate targets which would be useful to inhibit in conditions of aberrantly high Notch signalling and set of targets which would be useful to inhibit in conditions of aberrantly reduced Notch signalling. By studying cell culture and in vivo systems in the fly this project aims to understand the mechanisms by which Notch signalling at different levels sensitises the cells to knock down of different sets of target genes and identify a synthetic lethal combination, which may in the longer term be translated into a therapeutic approach. Proof of principle will then be obtained in human cancer cell lines.
Notch是一种跨膜定位的信号受体,用于发育和成体干细胞调控,其失调经常涉及不同的人类癌症。Notch通过胞外结构域(NECD)的蛋白水解去除和随后的γ-分泌酶依赖性膜内切割以释放Notch胞内结构域(NICD)来激活。一旦进入细胞核,NICD与转录因子Su(H)/CBF结合,该复合物沿着募集的辅激活因子激活基因特异性转录。结果是依赖于环境的,Notch在发育中发挥许多作用,影响不同的细胞命运、增殖和细胞死亡/存活,以及许多组织中的决定。Notch信号传导与癌症干细胞调控有关,因此它使Notch成为控制其信号活性的治疗的有吸引力的靶点。已经有一些针对高Notch信号的药物,但许多试验都没有成功,因为有不可接受的副作用。在这个项目中,该策略正在开发中,通过使用Notch作为生物标志物来确定哪些肿瘤对靶向其他成分敏感,这些成分将杀死肿瘤细胞,但不影响正常细胞。在果蝇细胞培养模型系统中使用全基因组筛选,我们已经鉴定了在异常高的Notch信号传导条件下可用于抑制的候选靶标和在异常降低的Notch信号传导条件下可用于抑制的一组靶标。通过研究细胞培养和果蝇体内系统,该项目旨在了解不同水平的Notch信号传导使细胞敏感以敲除不同靶基因组的机制,并确定一种合成的致死组合,从长远来看,这可能会转化为治疗方法。然后将在人类癌细胞系中获得原理证明。
项目成果
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其他文献
吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
- DOI:
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LiDAR Implementations for Autonomous Vehicle Applications
- DOI:
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2021 - 期刊:
- 影响因子:0
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吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
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