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Published on: October 27, 2014
干细胞和癌症中的Wnt信号传递
Tannishtha Reya1, Hans Clevers
1Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina 27710, USA. t.reya@duke.edu
Nature
|April 15, 2005
概括
Wnt信号通路对于干细胞自我更新至关重要,并且在癌症中经常受到调节失调,导致恶性扩散. 了解肠道等系统中的这种双重作用,可能会揭示癌症的发展.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- Wnt信号通路是干细胞在各种组织中自我更新的关键调节器.
- 在许多类型的癌症中经常观察到异常的Wnt信号激活.
- 这表明癌细胞对正常干细胞调节的潜在颠覆.
研究的目的:
- 探索Wnt信号在干细胞维护和癌细胞增殖中的双重作用.
- 调查Wnt通路失调如何导致恶性生长.
- 建立理解干细胞和癌细胞自我更新信号的范式.
主要方法:
- 审查关于干细胞生物学和癌症中的Wnt信号的现有文献.
- 在肠道,表皮和造血系统中对Wnt通路的参与进行比较分析.
- 整合发现,以了解Wnt路径颠覆的机制.
主要成果:
- Wnt信号传递是干细胞和祖细胞自我更新的组成部分.
- 癌细胞劫持了Wnt信号,用于不受控制的增殖和恶性生长.
- 肠道,表皮和造血系统为这种双重功能提供了关键的见解.
结论:
- 在正常的干细胞生物学和癌症中,Wnt信号发挥着基本的,但二分化的作用.
- 了解干细胞中的Wnt通路调节对于癌症研究至关重要.
- 研究的系统为破译疾病中自我更新信号的复杂性提供了有价值的框架.
相关概念视频
Canonical Wnt Signaling Pathway
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 results in tumor...
Canonical Wnt Signaling Pathway
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 results in tumor...
Non-Canonical Wnt Signaling Pathways
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...
Non-Canonical Wnt Signaling Pathways
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...
Cancer Stem Cells and Tumor Maintenance
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...
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Cancer Stem Cells and Tumor Maintenance
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...
