绘制长途癌症的地图
David M Cheek1, Kamila Naxerova1
1Center for Systems Biology, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Cell
|March 9, 2022
概括
癌症的开始包括累积的突变. 一项新的研究显示,通过分析血液癌症患者的单细胞基因组, 关键突变可以在诊断前几十年出现,
科学领域:
- 癌症学
- 遗传学
- 分子生物学
背景情况:
- 细胞突变会在一生中积累.
- 特定的突变组合可以启动癌症的发展.
- 了解癌前突变的时间表对于早期检测和干预至关重要.
研究的目的:
- 为了推断癌前进化的详细时间表.
- 研究血液恶性瘤中关键突变的时间.
- 在单细胞水平上了解癌症发展的早期阶段.
主要方法:
- 单细胞基因组测序来自患有恶性血液瘤的患者.
- 计算分析可以重建进化历史.
- 对突变积累模式的比较分析.
主要成果:
- 在临床诊断前几十年可以获得关键的致癌突变.
- 详细的癌前遗传进化时间表被重建.
- 在细胞中观察到突变获取时间的显著异质性.
结论:
- 癌症的发展是一个漫长的过程,
- 单细胞基因组测序为研究癌前进化提供了前所未有的解决方案.
- 这些发现对了解癌症发病和开发早期诊断策略有意义.
更多相关视频
相关概念视频
Tumor Progression
6.5K
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...
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...
6.5K
What is Cancer?
11.4K
Cells and tissues must meticulously coordinate their activities for the normal functioning of the human body. Therefore, they exhibit socially responsible behavior - resting, growing, dividing, differentiating, or dying - for the organism’s benefit. Cancer arises when cells divide uncontrollably and invade other tissues or organs.
Although people have known about cancer for centuries, it was only in 1761 that Giovanni Morgagni of Padua performed a detailed autopsy of...
Although people have known about cancer for centuries, it was only in 1761 that Giovanni Morgagni of Padua performed a detailed autopsy of...
11.4K
Cancer Survival Analysis
472
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
472
Cancer
50.2K
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.
50.2K
Adaptive Mechanisms in Cancer Cells
6.0K
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,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
6.0K
Cancers Originate from Somatic Mutations in a Single Cell
13.2K
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...
13.2K


