PMID- 34721522 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240403 IS - 1664-8021 (Print) IS - 1664-8021 (Electronic) IS - 1664-8021 (Linking) VI - 12 DP - 2021 TI - Molecular Cytogenetics in the Era of Chromosomics and Cytogenomic Approaches. PG - 720507 LID - 10.3389/fgene.2021.720507 [doi] LID - 720507 AB - Here the role of molecular cytogenetics in the context of yet available all other cytogenomic approaches is discussed. A short introduction how cytogenetics and molecular cytogenetics were established is followed by technical aspects of fluorescence in situ hybridization (FISH). The latter contains the methodology itself, the types of probe- and target-DNA, as well as probe sets. The main part deals with examples of modern FISH-applications, highlighting unique possibilities of the approach, like the possibility to study individual cells and even individual chromosomes. Different variants of FISH can be used to retrieve information on genomes from (almost) base pair to whole genomic level, as besides only second and third generation sequencing approaches can do. Here especially highlighted variations of FISH are molecular combing, chromosome orientation-FISH (CO-FISH), telomere-FISH, parental origin determination FISH (POD-FISH), FISH to resolve the nuclear architecture, multicolor-FISH (mFISH) approaches, among other applied in chromoanagenesis studies, Comet-FISH, and CRISPR-mediated FISH-applications. Overall, molecular cytogenetics is far from being outdated and actively involved in up-to-date diagnostics and research. CI - Copyright (c) 2021 Liehr. FAU - Liehr, Thomas AU - Liehr T AD - Jena University Hospital, Institute of Human Genetics, Friedrich Schiller University, Jena, Germany. LA - eng PT - Journal Article PT - Review DEP - 20211013 PL - Switzerland TA - Front Genet JT - Frontiers in genetics JID - 101560621 PMC - PMC8548727 OTO - NOTNLM OT - chromosomal heteromorphisms (CHMs) OT - chromosomics OT - chromothripsis OT - copy number variations (CNVs) OT - cytogenomics OT - glass-needle based chromosome microdissection (midi) OT - small supernumerary marker chromosomes (sSMCs) OT - topologically associating domains (TADs) COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/11/02 06:00 MHDA- 2021/11/02 06:01 PMCR- 2021/10/13 CRDT- 2021/11/01 09:12 PHST- 2021/06/04 00:00 [received] PHST- 2021/09/22 00:00 [accepted] PHST- 2021/11/01 09:12 [entrez] PHST- 2021/11/02 06:00 [pubmed] PHST- 2021/11/02 06:01 [medline] PHST- 2021/10/13 00:00 [pmc-release] AID - 720507 [pii] AID - 10.3389/fgene.2021.720507 [doi] PST - epublish SO - Front Genet. 2021 Oct 13;12:720507. doi: 10.3389/fgene.2021.720507. eCollection 2021.