PMID- 38465861 OWN - NLM STAT- MEDLINE DCOM- 20240312 LR - 20240315 IS - 1555-8576 (Electronic) IS - 1538-4047 (Print) IS - 1538-4047 (Linking) VI - 25 IP - 1 DP - 2024 Dec 31 TI - Repression of the SUMO-conjugating enzyme UBC9 is associated with lowered double minutes and reduced tumor progression. PG - 2323768 LID - 10.1080/15384047.2024.2323768 [doi] LID - 2323768 AB - Double minutes (DMs), extrachromosomal gene fragments found within certain tumors, have been noted to carry onco- and drug resistance genes contributing to tumor pathogenesis and progression. After screening for SUMO-related molecule expression within various tumor sample and cell line databases, we found that SUMO-conjugating enzyme UBC9 has been associated with genome instability and tumor cell DM counts, which was confirmed both in vitro and in vivo. Karyotyping determined DM counts post-UBC9 knockdown or SUMOylation inhibitor 2-D08, while RT-qPCR and Western blot were used to measure DM-carried gene expression in vitro. In vivo, fluorescence in situ hybridization (FISH) identified micronucleus (MN) expulsion. Western blot and immunofluorescence staining were then used to determine DNA damage extent, and a reporter plasmid system was constructed to detect changes in homologous recombination (HR) and non-homologous end joining (NHEJ) pathways. Our research has shown that UBC9 inhibition is able to attenuate DM formation and lower DM-carried gene expression, in turn reducing tumor growth and malignant phenotype, via MN efflux of DMs and lowering NHEJ activity to increase DNA damage. These findings thus reveal a relationship between heightened UBC9 activity, increased DM counts, and tumor progression, providing a potential approach for targeted therapies, via UBC9 inhibition. FAU - Wang, Yusi AU - Wang Y AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Zou, Hongyan AU - Zou H AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Ji, Wei AU - Ji W AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Huang, Min AU - Huang M AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - You, Benhui AU - You B AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Sun, Nan AU - Sun N AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Qiao, Yuandong AU - Qiao Y AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Liu, Peng AU - Liu P AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Xu, Lidan AU - Xu L AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Zhang, Xuelong AU - Zhang X AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Cai, Mengdi AU - Cai M AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Kuang, Ye AU - Kuang Y AD - Department of Gynecology and Obstetrics, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China. FAU - Fu, Songbin AU - Fu S AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Sun, Wenjing AU - Sun W AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Jia, Xueyuan AU - Jia X AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. FAU - Wu, Jie AU - Wu J AUID- ORCID: 0000-0003-1525-7864 AD - Laboratory of Medical Genetics, Harbin Medical University, Harbin, China. AD - Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China, Harbin Medical University, Harbin, China. AD - Future Medical Laboratory, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China. LA - eng PT - Journal Article DEP - 20240311 PL - United States TA - Cancer Biol Ther JT - Cancer biology & therapy JID - 101137842 RN - EC 6.3.2.- (ubiquitin-conjugating enzyme UBC9) SB - IM MH - Humans MH - Cell Nucleus MH - *Chromosome Aberrations MH - *DNA Damage MH - In Situ Hybridization, Fluorescence PMC - PMC10936631 OTO - NOTNLM OT - DNA damage repair OT - SUMOylation OT - UBC9 OT - double minutes OT - genome instability COIS- No potential conflict of interest was reported by the author(s). EDAT- 2024/03/11 12:43 MHDA- 2024/03/12 06:43 PMCR- 2024/03/11 CRDT- 2024/03/11 08:23 PHST- 2024/03/12 06:43 [medline] PHST- 2024/03/11 12:43 [pubmed] PHST- 2024/03/11 08:23 [entrez] PHST- 2024/03/11 00:00 [pmc-release] AID - 2323768 [pii] AID - 10.1080/15384047.2024.2323768 [doi] PST - ppublish SO - Cancer Biol Ther. 2024 Dec 31;25(1):2323768. doi: 10.1080/15384047.2024.2323768. Epub 2024 Mar 11.