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Cancer02:18

Cancer

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Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
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Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

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Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
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Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

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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,...
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Tumor Progression02:07

Tumor Progression

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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
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T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
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Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

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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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Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis
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Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis

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癌におけるクローン進化

Mel Greaves1, Carlo C Maley

  • 1Division of Molecular Pathology, The Institute of Cancer Research, Brookes Lawley Building, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK. mel.greaves@icr.ac.uk

Nature
|January 20, 2012
PubMed
まとめ
この要約は機械生成です。

癌の進化は複雑なダーウィン的なプロセスである. 遺伝的多様性と耐性を含むこの進化の動態を理解することは,治療の失敗を克服し,がん制御戦略を改善する鍵です.

さらに関連する動画

Characterizing Mutational Load and Clonal Composition of Human Blood
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VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma
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Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis

Published on: May 26, 2021

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Characterizing Mutational Load and Clonal Composition of Human Blood
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Published on: July 11, 2019

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VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma
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科学分野:

  • 腫瘍学 腫瘍学
  • 進化生物学の進化生物学について
  • がん研究 がん研究

背景:

  • 癌は,クローン拡大,遺伝的多様化,組織生態系内の選択によって特徴づけられる複雑なシステムである.
  • 癌の進化は,遺伝的多様性とクローン構造の高度に変動するパターンを表しています.
  • 治療的介入は,無意識に耐性がん変異の選択と拡大を促す可能性があります.

研究 の 目的:

  • 癌の複雑な進化のダイナミクスを探求するために.
  • 治療介入ががんの進化と抵抗にどのように影響するかを理解する.
  • 癌のダーウィン的な性質をどのように利用して,がんのコントロールを向上させることができるかを特定する.

主な方法:

  • 癌のクローン進化のダイナミクスの分析.
  • 癌の遺伝的多様化と選択プロセスのモデリング.
  • 治療介入ががん耐性に対する影響に関するレビュー.

主要な成果:

  • 癌の進化は,クローン選択によって引き起こされる繰り返しのプロセスである.
  • 治療的介入は,強い選択的圧力として作用し,抵抗性を促進します.
  • 癌のダーウィン的な性質は,治療の失敗の主な原因である.

結論:

  • 癌の固有のダーウィンの進化は,適応的な治療戦略を必要とします.
  • 進化の原理を活用することで,がんを効果的にコントロールする新たな道が開かれるかもしれません.
  • 癌の適応パターンを理解することは,治療に対する耐性を克服するために極めて重要です.