基于基和基的线粒体转型抗氧化剂改善牛胚胎质量和冷生存
Filipa Ferreira1,2, Beatriz Lourenço1, José Teixeira3,4,5
1INIAV-Instituto Nacional de Investigação Agrária e Veterinária, Unidade de Biotecnologia e Recursos Genéticos, Quinta da Fonte Boa, 2005-048 Vale de Santarém, Portugal.
Veterinary sciences
|February 26, 2026
概括
新的抗氧化剂AntiOxCIN4和AntiOxBEN2,通过减少氧化应激,改善了辅助生殖技术中的胚胎质量和冷生存. 这些发现表明一种潜在的治疗干预来提高ART的效率.
科学领域:
- 生殖生物学 生殖生物学
- 生物化学 生物化学
- 细胞生物学 细胞生物学
背景情况:
- 辅助生殖技术 (ART) 面临低效率的挑战,部分原因是氧化应激对胚胎发育产生负面影响.
- 线粒体功能对细胞存活至关重要,使线粒体成为改善ART结果的关键目标.
- 氧化应激可以损害胚胎质量,并降低ART程序中的怀孕率.
研究的目的:
- 通过在培养基中引入针对线粒体的新型抗氧化剂来提高ART中的可活胚胎质量.
- 研究两种合成的抗氧化剂AntiOxCIN4和AntiOxBEN2对胚胎发育和冷生存的影响.
- 确定这些抗氧化剂的最佳度,以减少胚胎培养期间的氧化应激.
主要方法:
- 进行了两项实验:一项是评估抗氧化剂对胚胎发育的影响,并确定最佳度,另一项是评估它们在玻璃化/加热后对冷生存的影响.
- 胚胎被培养在不同的AntiOxCIN4和AntiOxBEN2度下,进行了形态评估,细胞计数,反应性氧物种 (ROS) 评估和线粒体极化测量.
- 没有抗氧化剂补充剂的对照组被包括在所有测试中进行比较.
主要成果:
- 补充2.5μM AntiOxCIN4和2.5μM AntiOxBEN2显著改善了实验1中的胚胎质量.
- 用2.5微米的AntiOxCIN4治疗的胚胎囊显示出更高的活力,而那些用2.5微米的AntiOxBEN2治疗的胚胎囊则增加了总细胞数.
- 在实验2中,2.5μM的两种抗氧化剂在玻璃化/加热和随后培养后提高了胚胎冷存活率.
结论:
- 无论是AntiOxCIN4还是AntiOxBEN2,都显示出对胚胎发育和冷生存有有益影响.
- 这些抗氧化剂显示为减轻辅助生殖技术中氧化应激的战略.
- 这些发现表明,这些新型化合物在改善ART成功率方面具有潜在的治疗应用.
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