在脊椎动物中癌症的发病率
Zachary T Compton1,2, Valerie Harris1, Walker Mellon1
1Arizona Cancer Evolution Center, The Biodesign Institute, Arizona State University, Tempe, AZ.
Research square
|July 18, 2023
概括
癌症的发病率因物种而异,随着体重和突变率的增加而增加,但随着妊娠时间的延长而减少. 了解这些差异可以改善癌症管理.
科学领域:
- 比较性瘤学研究
- 进化生物学是进化的生物学.
- 针对特定物种的癌症研究.
背景情况:
- 癌症是不同物种的重大健康问题.
- 在不同物种之间,癌症患病率存在显著差异.
- 推动这些物种间差异的根本因素在很大程度上是未知的.
研究的目的:
- 研究物种特征与癌症患病率之间的关系.
- 确定影响不同种群中瘤和恶性瘤发病率的关键因素.
- 了解癌症易感性的进化模式.
主要方法:
- 分析了来自292种物种的16049份尸体解剖记录.
- 包括来自三大类的物种:两动物,类动物和哺乳动物.
- 对癌症患病率,成人体重,体质突变率和妊娠时间之间的相关性进行统计检查.
主要成果:
- 新生病和恶性瘤的患病率与成年人体重和体质突变率呈正相关性.
- 癌症患病率与妊娠时间有负相关性,这与佩托悖论相反.
- 识别出异常物种,癌症发病率异常高 (,) 或低 (海豚,水果蝙蝠,企).
- 观察到癌症易感性的进化转变,其次是稳定选择.
结论:
- 特定物种的癌症患病率受到身体大小,突变率和生殖策略的结合的影响.
- 进化动态揭示了快速变化的时期和随后的癌症易感性选择.
- 对异常物种的进一步研究可以提供有关癌症综合征和治疗策略的见解.
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