LA795 Cells

The LA795 cell line, derived from a lung adenocarcinoma, has been extensively studied for its chromosomal patterns using G and C banding techniques at passages 60 and 100. The chromosomal analysis revealed model chromosome numbers 69, 68, 67, and 66. Detailed G banding analysis of 46 cells across these four clones indicated that the chromosome patterns of LA795 are hypotetraploid male cells, closely resembling those observed in cells transplanted into mice. The two primary configurations of the 69 model chromosome, designated 69I and 69II, suggest a progression in chromosomal evolution from 69 to 68, 67, and 66 as identified through karyotype analysis.
The karyotype analysis also highlighted a notable pattern in the loss of specific chromosomes, specifically chromosome No. 4 and No. 14, across the various clones. This recurrent chromosomal loss indicates a potential non-random chromosomal aberration associated with mouse tumor cells. The findings from these studies provide valuable insights into the chromosomal stability and evolution of the LA795 cell line, offering a deeper understanding of the genetic underpinnings of lung adenocarcinoma and its progression.