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相关概念视频

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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Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

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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.
Such genes that act...
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Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

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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.
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Such genes that act...
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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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Genomics02:02

Genomics

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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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Cancer Survival Analysis01:21

Cancer Survival Analysis

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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...
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相关实验视频

Updated: Nov 3, 2025

Cancer-Associated Fibroblasts from Mouse Mammary Tumors as Tools for Molecular and Computational Studies
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Cancer-Associated Fibroblasts from Mouse Mammary Tumors as Tools for Molecular and Computational Studies

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癌症和基因组学 癌症和基因组学

P A Futreal1, A Kasprzyk, E Birney

  • 1Cancer Genome Project, Sanger Centre, Cambridge, UK.

Nature
|March 10, 2001
PubMed
概括

研究人员通过分析人类基因组序列来寻找新的致癌基因. 该研究发现,由于高的假阳性率和DNA质量差,在癌细胞中检测瘤融合基因是不可靠的.

科学领域:

  • 基因组学就是基因组学.
  • 癌症研究 癌症研究
  • 分子生物学分子生物学

背景情况:

  • 鉴定驱动瘤发生的基因对于癌症研究至关重要.
  • 以前的努力集中在通过比较蛋白质序列来寻找新的瘤抑制基因.

研究的目的:

  • 研究用于识别致癌基因的新方法.
  • 评估直接在癌症基因组中检测瘤源序变化的可行性.

主要方法:

  • 在人类基因组序列中搜索已知瘤抑制基因的类型.
  • 将癌症基因组序列与人类基因组草案进行比较,以检测致癌性序列变化.
  • 分析了可表明瘤性融合基因的基因转录.

主要成果:

  • 通过蛋白质序列比较,没有发现新的瘤抑制基因.
  • 在正常和瘤组织中检测到化学转录,表明显著的错误阳性.
  • 该研究强调了现有的癌细胞DNA序列的数量和质量的局限性.

结论:

  • 使用当前方法直接搜索癌症基因组中的瘤源序变化是不可靠的.
  • 癌症DNA序列的低质量和有限数量对识别致癌基因构成重大挑战.

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  • 为了准确发现癌症基因,需要在DNA测序技术和数据分析方面取得进一步的进展.