Method for enumeration of mammalian cell micronuclei, while distinguishing chromatin of dead and dying cells
申请人:Litron Laboratories, Ltd.
公开号:US10000793B2
公开(公告)日:2018-06-19
The present invention relates a method for the enumeration of mammalian cell micronuclei, while distinguishing micronuclei from the chromatin of dead and dying cells. The method utilizes differential staining of chromatin from dead and dying cells, to distinguish the chromatin from micronuclei and nuclei that can be detected based upon fluorescent emission and light scatter following exposure to an excitatory light source. Counting of micronuclei events relative to the number of nuclei can be used to assess the DNA-damaging potential of a chemical agent, the DNA-damaging potential of a physical agent, the effects of an agent which can modify endogenously-induced DNA damage, and the effects of an agent which can modify exogenously-induced DNA damage. Kits for practicing the invention are also disclosed.
本发明涉及一种枚举哺乳动物细胞微核的方法,同时将微核与死亡和濒死细胞的染色质区分开来。该方法利用对死亡和濒死细胞染色质的不同染色,将染色质与微核和细胞核区分开来,微核和细胞核在暴露于激发光源后可根据荧光发射和光散射进行检测。相对于细胞核数量的微核事件计数可用于评估化学制剂的 DNA 损伤潜能、物理制剂的 DNA 损伤潜能、可改变内源性 DNA 损伤的制剂的效果以及可改变外源性 DNA 损伤的制剂的效果。还公开了用于实施本发明的试剂盒。