MultiCycle software for cell cycle analyses
Funai, S.; Kurooka, K.; Fujii, Y.; Inufusa, H.; Yamada, H.; Imanishi, Y.; Sato, S.; Shindo, K.; Yasutomi, M.
Gan to Kagaku Ryoho. Cancer and ChemoTherapy 21(Suppl 1): 102-107
1994
ISSN/ISBN: 0385-0684 PMID: 8203921 Document Number: 423387
MultiCycle software (M-cycle), a computer cell cycle analysis program that has a background debris and aggregation compensating function, was utilized in this study to prove the usefulness of the M-cycle. The S phase fraction (SPF) calculated by the M-cycle was compared to that of bromodeoxyuridine labelling index (BLI) using colorectal carcinoma cell lines. The SPF value was slightly lower using the M-cycle than that of the BLI in Colo 201 and Colo 320 and lower significantly in Widr. This may indicate that the M-cycle effectively compensated for the background existing in the DNA histogram. The SPF value was computed both by the M-cycle and the sum of broadened rectangles model (SOBR). The SPF value of these cell lines showed a lower figure in the M-cycle than in the SOBR. The SPF value of paraffin-embedded material through the M-cycle and the SOBR was compared according to DNA ploidy patterns. The SPF value computed by the M-cycle was significantly lower in both ploidy patterns than that of the SOBR. In conclusion, the M-cycle is a useful tool for cell cycle analyses of simple DNA flow cytometric histograms obtained by paraffin-embedded material.