PMID- 23832878 OWN - NLM STAT- MEDLINE DCOM- 20131119 LR - 20211021 IS - 1551-5044 (Electronic) IS - 0022-1554 (Print) IS - 0022-1554 (Linking) VI - 61 IP - 10 DP - 2013 Oct TI - Quantitative analysis of centromeric FISH spots during the cell cycle by image cytometry. PG - 699-705 LID - 10.1369/0022155413498754 [doi] AB - Two-color fluorescence in situ hybridization (FISH) with chromosome enumeration DNA probes specific to chromosomes 7, 11, 17, and 18 was applied to CAL-51 breast cancer cells to examine whether the fluorescence intensity of FISH spots was associated with cell cycle progression. The fluorescence intensity of each FISH spot was quantitatively analyzed based on the cell cycle stage determined by image cytometry at the single-cell level. The spot intensity of cells in the G2 phase was larger than that in the G0/1 phase. This increased intensity was not seen during the early and mid S phases, whereas the cells in the late S phase showed significant increases in spot intensity, reaching the same level as that observed in the G2 phase, indicating that alpha satellite DNA in the centromeric region was replicated in the late S phase. Thus, image cytometry can successfully detect small differences in the fluorescence intensities of centromeric spots of homologous chromosomes. This combinational image analysis of FISH spots and the cell cycle with cell image cytometry provides insights into new aspects of the cell cycle. This is the first report demonstrating that image cytometry can be used to analyze the fluorescence intensity of FISH signals during the cell cycle. FAU - Amakawa, Genta AU - Amakawa G AD - Department of Pathology, Yamaguchi University Graduate School of Medicine, Ube, Japan (GA, KI, HI, TF, KS). FAU - Ikemoto, Kenzo AU - Ikemoto K FAU - Ito, Hideaki AU - Ito H FAU - Furuya, Tomoko AU - Furuya T FAU - Sasaki, Kohsuke AU - Sasaki K LA - eng PT - Journal Article DEP - 20130704 PL - United States TA - J Histochem Cytochem JT - The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society JID - 9815334 SB - IM MH - *Cell Cycle MH - Cell Line, Tumor MH - Centromere/*metabolism MH - Humans MH - *Image Cytometry MH - *In Situ Hybridization, Fluorescence MH - Spectrometry, Fluorescence PMC - PMC3788625 OTO - NOTNLM OT - DNA ploidy OT - FISH OT - S phase OT - cell cycle OT - image cytometry COIS- Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2013/07/09 06:00 MHDA- 2013/11/20 06:00 PMCR- 2014/10/01 CRDT- 2013/07/09 06:00 PHST- 2013/07/09 06:00 [entrez] PHST- 2013/07/09 06:00 [pubmed] PHST- 2013/11/20 06:00 [medline] PHST- 2014/10/01 00:00 [pmc-release] AID - 0022155413498754 [pii] AID - 10.1369_0022155413498754 [pii] AID - 10.1369/0022155413498754 [doi] PST - ppublish SO - J Histochem Cytochem. 2013 Oct;61(10):699-705. doi: 10.1369/0022155413498754. Epub 2013 Jul 4.