直接证据表明,冷保护剂混合物有助于单个成分透到活植物细胞中
Kylie C Pearce1, Fionna M D Samuels1, Gayle M Volk2
1Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA.
Cryobiology
|June 10, 2024
概括
在玻璃化过程中,冷保护剂的透到米细胞中比观察到的细胞膜反应更快. 与单一溶液相比,PVS2中的混合物提高了透速度和均性.
科学领域:
- 植物生物学 植物生物学
- 冰冷保存科学是一种科学.
- 细胞生物物理学 细胞生物物理学
背景情况:
- 植物冷保存依赖于理解冷保护剂与细胞的相互作用.
- 实时监测冷保护剂透到植物细胞中的情况至关重要,但研究不足.
- 玻璃化需要有效的冷保护剂,以防止冰晶的形成.
研究的目的:
- 在玻璃化过程中实时调查透到米细胞中的冷保护剂.
- 分析冷保护剂混合物对透动态的影响.
- 为了将冷保护剂透与细胞膜反应相关联.
主要方法:
- 使用连贯的抗斯托克斯拉曼散射 (CARS) 显微镜来追踪植物玻璃化溶液2 (PVS2) 中的脱化冷保护剂 (DMSO,乙烯基醇,甘油).
- 探测C-D伸展振动频率,用于实时透监测.
- 使用亮场显微镜评估细胞等离子膜完整性和反应.
主要成果:
- 实时观察到冷保护剂透到米细胞中.
- PVS2成分的透速度比最初的血膜反应更快.
- 与单一水溶液相比,PVS2中的冷保护剂表现出更快,更均的细胞透.
结论:
- 结晶保护剂的透和观察到的血反应并没有直接相关.
- PVS2促进了植物细胞更有效,更均地吸收冷保护剂.
- 这些发现提升了对植物细胞玻璃化技术的理解,以改进冷保存技术.
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