基于进化历史的CoQ10作物的设计
Jing-Jing Xu1, Yuan Lei2, Xiao-Fan Zhang3
1Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, and Chenshan Science Research Center, CAS Center for Excellence in Molecular Plant Sciences (CEMPS), Chinese Academy of Sciences (CAS), Shanghai 201602, China.
Cell
|February 14, 2025
概括
科学家发现了控制辅酶Q (CoQ) 链长度的Coq1酶的关键变化. 基因编辑大米和小麦以产生辅酶Q10为人类健康提供了新的饮食来源.
科学领域:
- 生物化学
- 植物科学
- 遗传学
背景情况:
- 辅酶Q (CoQ) 对细胞能量产生和心血管健康至关重要.
- 人类合成辅酶Q10 (CoQ10),而许多植物产生辅酶Q9 (CoQ9).
- 通过作物增加饮食中的CoQ10是可取的,但由于未知的控制链长的CoQ1酶机制而受到限制.
研究的目的:
- 确定负责确定CoQ链长度的Coq1酶中的特定氨基酸残留物.
- 在大米和小麦等主食作物中工程化Q10生产.
主要方法:
- 在陆地植物中分析CoQ9和CoQ10的分布.
- 对 Coq1 酶序列变异的研究.
- 使用基因编辑来修改大米和小麦中的Coq1基因.
主要成果:
- 在CoQ1催化口袋的关键氨基酸替代被确定为CoQ9合成的驱动因素.
- 这些变化被发现在多个植物系中独立演变.
- 成功修改大米和小麦的CoQ1基因以产生CoQ10.
结论:
- 特定的 CoQ1 残留物决定了 CoQ 链的长度,在植物中趋同的进化有利于 CoQ9.
- 基因编辑提供了一种可行的策略,
- 这项研究为新的食辅酶Q10来源开辟了途径,有利于人类健康.
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