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相关概念视频

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The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
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相关实验视频

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Utilizing 18F-FDG PET/CT Imaging and Quantitative Histology to Measure Dynamic Changes in the Glucose Metabolism in Mouse Models of Lung Cancer
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一种常见的人类PCSK9生殖基因变异通过LRP1受体驱动乳腺癌转移

Wenbin Mei1, Schayan Faraj Tabrizi1, Christopher Godina2

  • 1Laboratory of Systems Cancer Biology, The Rockefeller University, New York, NY, USA.

Cell
|December 10, 2024
PubMed
概括

PCSK9的一个常见的基因变异 (proprotein convertase subtilisin/ kexin type 9) 显著增加了乳腺癌转移的风险,并预测了生存率不佳. 抑制PCSK9可能是预防癌症扩散的治疗策略.

关键词:
一个LRP在PCSK9USP18 其他其他类型乳腺癌在基因上打开门发生转移预后情况治疗方法

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科学领域:

  • 癌症学
  • 遗传学
  • 分子生物学

背景情况:

  • 鉴定患有转移性复发风险的患者对于有效的乳腺癌治疗至关重要.
  • 遗传因素对乳腺癌转移的作用是一个活跃的研究领域.

研究的目的:

  • 调查PCSK9 (rs562556, V474I) 中常见的生殖系变异在乳腺癌转移和患者存活率中的作用.
  • 探索PCSK9,LRP1和转移促进基因之间的机制性联系.

主要方法:

  • 在小鼠中进行基因建模,以评估PCSK9变异在转移中的因果作用.
  • 对乳腺癌患者队列的分析,以将PCSK9变异与生存和复发相关联.
  • 研究PCSK9在转移中的分子点,包括LRP1和下游基因.

主要成果:

  • 在小鼠模型中,PCSK9 V474I变异 (rs562556) 与生存率降低和因果促进乳腺癌转移有关.
  • 通过向瘤LRP1受体,抑制转移促进基因,宿主PCSK9的删除减少了转移殖民.
  • 在临床前模型中抑制了抗体介导的PCSK9转移.
  • 在瑞典的一群患者中,同卵性卵子患者的远程转移性复发风险为22%,而非同卵性卵子患者的风险为2%.

结论:

  • 在PCSK9中常见的遗传基因变异控制了乳腺癌的转移,并预测了患者的存活率.
  • PCSK9通过LRP1调节转移促进基因,代表潜在的治疗点.
  • 这项研究揭示了乳腺癌转移的遗传基础.