PMID- 28117817 OWN - NLM STAT- MEDLINE DCOM- 20170927 LR - 20181202 IS - 1940-087X (Electronic) IS - 1940-087X (Linking) IP - 119 DP - 2017 Jan 11 TI - Detection of Inter-chromosomal Stable Aberrations by Multiple Fluorescence In Situ Hybridization (mFISH) and Spectral Karyotyping (SKY) in Irradiated Mice. LID - 10.3791/55162 [doi] LID - 55162 AB - Ionizing radiation (IR) induces numerous stable and unstable chromosomal aberrations. Unstable aberrations, where chromosome morphology is substantially compromised, can easily be identified by conventional chromosome staining techniques. However, detection of stable aberrations, which involve exchange or translocation of genetic materials without considerable modification in the chromosome morphology, requires sophisticated chromosome painting techniques that rely on in situ hybridization of fluorescently labeled DNA probes, a chromosome painting technique popularly known as fluorescence in situ hybridization (FISH). FISH probes can be specific for whole chromosome/s or precise sub-region on chromosome/s. The method not only allows visualization of stable aberrations, but it can also allow detection of the chromosome/s or specific DNA sequence/s involved in a particular aberration formation. A variety of chromosome painting techniques are available in cytogenetics; here two highly sensitive methods, multiple fluorescence in situ hybridization (mFISH) and spectral karyotyping (SKY), are discussed to identify inter-chromosomal stable aberrations that form in the bone marrow cells of mice after exposure to total body irradiation. Although both techniques rely on fluorescent labeled DNA probes, the method of detection and the process of image acquisition of the fluorescent signals are different. These two techniques have been used in various research areas, such as radiation biology, cancer cytogenetics, retrospective radiation biodosimetry, clinical cytogenetics, evolutionary cytogenetics, and comparative cytogenetics. FAU - Pathak, Rupak AU - Pathak R AD - Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences; RPathak@uams.edu. FAU - Koturbash, Igor AU - Koturbash I AD - Department of Environmental Health, Fay W. Boozman School of Public Health, University of Arkansas for Medical Sciences. FAU - Hauer-Jensen, Martin AU - Hauer-Jensen M AD - Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences; Surgical Service, Central Arkansas Veterans Healthcare System. LA - eng GR - P20 GM109005/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Video-Audio Media DEP - 20170111 PL - United States TA - J Vis Exp JT - Journal of visualized experiments : JoVE JID - 101313252 RN - 0 (DNA Probes) RN - 0 (Fluorescent Dyes) SB - IM MH - Animals MH - *Chromosome Aberrations MH - Chromosome Painting MH - DNA Probes MH - Fluorescent Dyes MH - In Situ Hybridization, Fluorescence/*methods MH - Mice MH - Spectral Karyotyping/*methods MH - Translocation, Genetic PMC - PMC5352253 EDAT- 2017/01/25 06:00 MHDA- 2017/09/28 06:00 PMCR- 2018/01/11 CRDT- 2017/01/25 06:00 PHST- 2017/01/25 06:00 [entrez] PHST- 2017/01/25 06:00 [pubmed] PHST- 2017/09/28 06:00 [medline] PHST- 2018/01/11 00:00 [pmc-release] AID - 55162 [pii] AID - 10.3791/55162 [doi] PST - epublish SO - J Vis Exp. 2017 Jan 11;(119):55162. doi: 10.3791/55162.