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癌症球体中的CRISPR屏幕识别了3D生长特异性漏洞
Kyuho Han1, Sarah E Pierce2, Amy Li3
1Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA. kyuhohan@stanford.edu.
Nature
|April 3, 2020
概括
通过精确模仿瘤, 3D 癌症模型揭示了新的药物点. 这项研究强调了碳氧酶D是肺癌的关键驱动因素,为识别癌症脆弱性提供了新的策略.
科学领域:
- 癌症学
- 基因组学
- 生物技术
背景情况:
- 数以千计的癌症驱动基因已被确定, 但功能性特征是具有挑战性的.
- 需要准确的模型来了解癌症进展中的基因功能.
研究的目的:
- 开发和使用可扩展的3D癌症球体模型用于全基因组CRISPR屏幕.
- 识别癌症驱动基因对于3D和体内瘤生长至关重要,但不是2D.
- 在肺癌中发现新的治疗漏洞.
主要方法:
- 在2D单层和3D肺癌球体中进行全基因组CRISPR选.
- 在2D和3D模型中对CRISPR表型进行比较,以确定基因敏感性的差异.
- 确定驱动基因的功能验证,包括碳氧酶D及其在胰岛素样生长因子1受体活性中的作用.
主要成果:
- 与2D模型相比,3D球体更准确地回顾了体内瘤表型.
- 在2D和3D条件之间具有差异敏感性的基因被丰富为肺癌突变.
- 碳氧酶D被认为对胰岛素类生长因子1受体活性至关重要,其表达与患者的结果相关.
结论:
- 3D癌症模型提供了比2D模型更准确的功能癌症驱动因素识别平台.
- 碳氧酶D是肺癌的潜在治疗点.
- 这项研究建立了一个可通用的CRISPR查策略,用于发现癌症的脆弱性.
相关概念视频
01:59CRISPR
Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced Short...
01:59CRISPR
Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced Short...
02:53Adaptive Mechanisms in Cancer Cells
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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