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相关概念视频

Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
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The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
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相关实验视频

Updated: Jun 23, 2026

Real Time Detection of In Vitro Tumor Cell Apoptosis Induced by CD8+ T Cells to Study Immune Suppressive Functions of Tumor-infiltrating Myeloid Cells
09:57

Real Time Detection of In Vitro Tumor Cell Apoptosis Induced by CD8+ T Cells to Study Immune Suppressive Functions of Tumor-infiltrating Myeloid Cells

Published on: January 29, 2019

内在的瘤抑制 瘤抑制

Scott W Lowe1, Enrique Cepero, Gerard Evan

  • 1Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. lowe@cshl.edu

Nature
|November 19, 2004
PubMed
概括
此摘要是机器生成的。

癌症是由不受控制的细胞分裂引起的,但细胞内有内置的瘤抑制剂,可触发细胞死亡或停止. 这些系统可以用于治疗,即使在癌症中发生突变.

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Real Time Detection of In Vitro Tumor Cell Apoptosis Induced by CD8+ T Cells to Study Immune Suppressive Functions of Tumor-infiltrating Myeloid Cells
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Published on: January 29, 2019

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科学领域:

  • 细胞生物学 细胞生物学
  • 癌症研究 癌症研究
  • 分子瘤学分子瘤学

背景情况:

  • 无法控制的细胞循环进展是癌症的标志.
  • 哺乳动物细胞具有先天的瘤抑制机制,包括亡和衰老,以防止异常增殖.
  • 这些机制涉及复杂的传感器和传感器网络.

研究的目的:

  • 探索瘤抑制机制在哺乳动物细胞增殖中的作用.
  • 了解影响这些网络的突变如何影响瘤进化.
  • 为了确定潜伏瘤抑制功能的治疗潜力.

主要方法:

  • 审查现有的关于细胞循环控制和瘤发生的文献.
  • 对参与亡和衰老的分子途径的分析.
  • 检查瘤突变对瘤抑制网络的影响.

主要成果:

  • 异常细胞的增殖是癌症发展的一个关键步骤.
  • 天生的细胞机制,如细胞亡和衰老,作为防止不受控制的生长的保障.
  • 致使这些网络失效的突变可以深刻地影响瘤的进展.
  • 潜伏的瘤抑制潜力甚至在存在瘤突变的情况下也可能存在.

结论:

  • 瘤抑制网络对于预防癌症至关重要.
  • 了解这些网络为新的癌症疗法提供了机会.
  • 准剩余的瘤抑制功能是一个有希望的治疗途径.