PMID- 32155721 OWN - NLM STAT- MEDLINE DCOM- 20201201 LR - 20231113 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 21 IP - 5 DP - 2020 Mar 6 TI - Cell Fusion-Mediated Tissue Regeneration as an Inducer of Polyploidy and Aneuploidy. LID - 10.3390/ijms21051811 [doi] LID - 1811 AB - The biological phenomenon of cell fusion plays a crucial role in several physiological processes, including wound healing and tissue regeneration. Here, it is assumed that bone marrow-derived stem cells (BMSCs) could adopt the specific properties of a different organ by cell fusion, thereby restoring organ function. Cell fusion first results in the production of bi- or multinucleated hybrid cells, which either remain as heterokaryons or undergo ploidy reduction/heterokaryon-to-synkaryon transition (HST), thereby giving rise to mononucleated daughter cells. This process is characterized by a merging of the chromosomes from the previously discrete nuclei and their subsequent random segregation into daughter cells. Due to extra centrosomes concomitant with multipolar spindles, the ploidy reduction/HST could also be associated with chromosome missegregation and, hence, induction of aneuploidy, genomic instability, and even putative chromothripsis. However, while the majority of such hybrids die or become senescent, aneuploidy and genomic instability appear to be tolerated in hepatocytes, possibly for stress-related adaption processes. Likewise, cell fusion-induced aneuploidy and genomic instability could also lead to a malignant conversion of hybrid cells. This can occur during tissue regeneration mediated by BMSC fusion in chronically inflamed tissue, which is a cell fusion-friendly environment, but is also enriched for mutagenic reactive oxygen and nitrogen species. FAU - Dornen, Jessica AU - Dornen J AD - Institute of Immunology, Center for Biomedical Education and Research (ZBAF), Witten/Herdecke University, 58448 Witten, Germany. FAU - Sieler, Mareike AU - Sieler M AD - Institute of Immunology, Center for Biomedical Education and Research (ZBAF), Witten/Herdecke University, 58448 Witten, Germany. FAU - Weiler, Julian AU - Weiler J AD - Institute of Immunology, Center for Biomedical Education and Research (ZBAF), Witten/Herdecke University, 58448 Witten, Germany. FAU - Keil, Silvia AU - Keil S AD - Institute of Immunology, Center for Biomedical Education and Research (ZBAF), Witten/Herdecke University, 58448 Witten, Germany. FAU - Dittmar, Thomas AU - Dittmar T AUID- ORCID: 0000-0001-8505-3424 AD - Institute of Immunology, Center for Biomedical Education and Research (ZBAF), Witten/Herdecke University, 58448 Witten, Germany. LA - eng PT - Journal Article PT - Review DEP - 20200306 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 SB - IM MH - *Aneuploidy MH - Animals MH - *Cell Fusion MH - *Chromosomal Instability MH - Humans MH - Hybrid Cells MH - *Polyploidy MH - *Regeneration PMC - PMC7084716 OTO - NOTNLM OT - aneuploidy OT - cell fusion OT - polyploidy OT - stem cells OT - tissue regeneration COIS- The authors declare no conflicts of interest. EDAT- 2020/03/12 06:00 MHDA- 2020/12/02 06:00 PMCR- 2020/03/01 CRDT- 2020/03/12 06:00 PHST- 2020/01/29 00:00 [received] PHST- 2020/02/28 00:00 [revised] PHST- 2020/03/04 00:00 [accepted] PHST- 2020/03/12 06:00 [entrez] PHST- 2020/03/12 06:00 [pubmed] PHST- 2020/12/02 06:00 [medline] PHST- 2020/03/01 00:00 [pmc-release] AID - ijms21051811 [pii] AID - ijms-21-01811 [pii] AID - 10.3390/ijms21051811 [doi] PST - epublish SO - Int J Mol Sci. 2020 Mar 6;21(5):1811. doi: 10.3390/ijms21051811.