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. 1999 Mar;29(2):103–113. doi: 10.1023/A:1008092620572

DNA content analysis of insect cell lines by flow cytometry

Xavier Léry 2,✉, Guy Charpentier 2, Serge Belloncik 3
PMCID: PMC3449909  PMID: 22359059

Abstract

The DNA content of insect cell lines (6 lepidoptera, 1 coleoptera and 1 diptera) was determined by flow cytometry. The DNA profiles of the 8 cell lines tested were different. They were characterized by the presence of several peaks (2 to 7) corresponding to different ploidy levels, by differences in the fluorescence intensity of each peak and by the proportion of cells in each peak. Two cell lines (Cf124 and BmN) were constituted of 2 distinct populations of cells. The DNA profiles of the cell lines were stable among the passages and during the length of time culture. This technique was demonstrated to be useful for the detection of mixed cell lines and nucleopolyhedrovirus cell infection, using Autographa californica MNPV. The flow cytometry gives interesting results on the cell cycle and the ploidy level; it appears as a good tool for insect cell lines characterization.

Keywords: Insect cell line, flow cytometry, cell characterization, viral infection

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