在脊椎动物中癌症的流行率
Zachary T Compton1,2,3, Walker Mellon1, Valerie K Harris1
1Arizona Cancer Evolution Center, The Biodesign Institute, Arizona State University, Tempe, Arizona.
Cancer discovery
|October 24, 2024
概括
动物的癌症患病率随着身体大小和突变率的增加而增加,但随着妊娠时间的延长而减少. 研究具有异常癌症发病率的物种为癌症预防和癌症综合征提供了洞察力.
科学领域:
- 比较性瘤学研究
- 进化生物学是进化的生物学.
- 兽医病理学 兽医病理学
背景情况:
- 癌症是跨物种的重大问题,但患病率差异很大.
- 了解癌症易感性的进化驱动因素至关重要.
研究的目的:
- 调查物种特征与癌症患病率之间的关系.
- 确定影响不同动物群体瘤和恶性瘤发病率的因素.
主要方法:
- 分析了来自292种四足动物 (两动物,类动物,哺乳动物) 的16049份尸体解剖记录.
- 统计建模以评估成年人质量,体质突变率和妊娠时间对癌症患病率的影响.
主要成果:
- 新生病和恶性瘤的患病率与成年人体质量和体质突变率呈正相关.
- 癌症患病率与妊娠时间相反.
- 成年人群对恶性瘤的影响仅在对妊娠时间进行控制后才显著.
- 识别出异常物种,癌症发病率异常高 (,) 或低 (海豚,水果蝙蝠,企).
结论:
- 癌症易感性是由进化压力塑造的,包括快速变化和稳定选择的时期.
- 研究特定物种的癌症变异可以揭示癌症抑制和抵抗的机制.
- 结果可能会为各种物种的癌症管理和预防提供新的策略.
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