广泛使用的Ucp1-Cre转基因引起复杂的发育和代谢表型
Manasi Suchit Halurkar1, Oto Inoue1, Archana Singh1
1Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
Nature communications
|January 17, 2025
概括
转基因小鼠模型需要验证. Ucp1-CreEvdr系列显示了对脂肪组织,生长和发育的意外影响,强调了对Cre-recombinase工具进行严格测试的必要性.
科学领域:
- 遗传学 遗传学 是一个
- 代谢研究研究 代谢研究
- 转基因模型 转基因模型
背景情况:
- 细菌人工染色体 (BAC) 转基因模型,包括Cre-重组酶系统,对于体内基因功能研究至关重要.
- 严格的验证至关重要,因为可能出现局限性.
- Ucp1-CreEvdr线经常用于棕色脂肪组织 (BAT) 研究的代谢研究.
研究的目的:
- 对Ucp1-CreEvdr转基因小鼠系进行全面分析.
- 识别和描述与转基因相关的潜在的意想不到的表型.
- 评估Ucp1-CreEvdr转基因对棕色和白色脂肪组织功能和整体生物体健康的影响.
主要方法:
- 在半胞胎中对棕色和白色脂肪组织的转录分析.
- Ucp1-CreEvdr同胞体的表型评估,包括死亡率,生长和面发育.
- 绘制转基因插入部位的地图,并描述相关的基因组变化.
主要成果:
- 半异体体在棕色和白色脂肪中表现出显著的转录组失调,这表明组织功能发生了变化.
- 同类动物呈现出高死亡率,组织特异性生长缺陷和面异常.
- 染色体1上的转基因插入导致了大量的基因组改变,破坏了各种组织中的多个基因. 在转基因中确定了额外的Ucp1基因副本.
结论:
- Ucp1-CreEvdr转基因诱导了一个复杂的表型,独立于预期的遗传操纵.
- 对转基因小鼠系进行全面验证是必要的,以防止意想不到的,非目标效应,并确保可靠的研究结果.
- 这些发现强调了在代谢和其他研究领域彻底描述Cre-重组酶模型的重要性.
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