PMID- 38003216 OWN - NLM STAT- MEDLINE DCOM- 20231127 LR - 20240210 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 24 IP - 22 DP - 2023 Nov 7 TI - Enhanced Intervertebral Disc Repair via Genetically Engineered Mesenchymal Stem Cells with Tetracycline Regulatory System. LID - 10.3390/ijms242216024 [doi] LID - 16024 AB - The therapeutic potential of Mesenchymal stem cells (MSCs) for the treatment of Intervertebral disc (IVD) degeneration can be enhanced by amplifying specific cytokines and proteins. This study aimed to investigate the therapeutic potential of tetracycline-off system-engineered tonsil-derived mesenchymal stem cells (ToMSC-Tetoff-TGFbeta1-IGF1-BMP7) for treating intervertebral disc (IVD) degeneration. ToMSCs were isolated from a tonsillectomy patient and genetically modified with four distinct plasmids via CRISPR/Cas9-mediated knock-in gene editing. Transgene expression was confirmed through immunofluorescence, western blots, and an enzyme-linked immunosorbent assay for transforming growth factor beta 1 (TGFbeta1) protein secretion, and the effect of MSC-TetOff-TGFbeta1-IGF1-BMP7 on disc injury was assessed in a rat model. The ToMSC-Tetoff-TGFbeta1-IGF1-BMP7 treatment exhibited superior therapeutic effects compared to ToMSC-TGFbeta1, and ToMSC-SDF1alpha implantation groups, stimulating the regeneration of nucleus pulposus (NP) cells crucial for IVD. The treatment showed potential to restore the structural integrity of the extracellular matrix (ECM) by upregulating key molecules such as aggrecan and type II collagen. It also exhibited anti-inflammatory properties and reduced pain-inducing neuropeptides. ToMSC-Tetoff-TGFbeta1-IGF1-BMP7 holds promise as a novel treatment for IVD degeneration. It appears to promote NP cell regeneration, restore ECM structure, suppress inflammation, and reduce pain. However, more research and clinical trials are required to confirm its therapeutic potential. FAU - Kim, Yeji AU - Kim Y AD - Research Competency Milestones Program of School of Medicine, CHA University School of Medicine, Seongnam-si 13496, Republic of Korea. FAU - An, Seong Bae AU - An SB AD - Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea. FAU - Lee, Sang-Hyuk AU - Lee SH AD - Department of Biomedical Science, Graduate School of CHA University, Seongnam-si 13496, Republic of Korea. FAU - Lee, Jong Joo AU - Lee JJ AUID- ORCID: 0000-0003-0905-0330 AD - Department of Medicine, Graduate School, Kyung Hee University, Seoul 02453, Republic of Korea. AD - Department of Neurosurgery, Kangbuk Samsung Hospital, Sungkyunkwan University College of Medicine, Seoul 03181, Republic of Korea. FAU - Kim, Sung Bum AU - Kim SB AD - Department of Neurosurgery, Kyung Hee University, Seoul 02453, Republic of Korea. FAU - Ahn, Jae-Cheul AU - Ahn JC AD - Department of Otorhinolaryngology-Head and Neck Surgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea. FAU - Hwang, Dong-Youn AU - Hwang DY AD - Department of Biomedical Science, Graduate School of CHA University, Seongnam-si 13496, Republic of Korea. AD - Department of Microbiology, School of Medicine, CHA University, Seongnam-si 13496, Republic of Korea. FAU - Han, Inbo AU - Han I AUID- ORCID: 0000-0002-0834-9325 AD - Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea. LA - eng GR - 27304C0002/ES/NIEHS NIH HHS/United States GR - 27306C0002/ES/NIEHS NIH HHS/United States PT - Journal Article DEP - 20231107 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - F8VB5M810T (Tetracycline) RN - 0 (Anti-Bacterial Agents) SB - IM MH - Humans MH - Rats MH - Animals MH - *Intervertebral Disc/metabolism MH - *Intervertebral Disc Degeneration/genetics/therapy/metabolism MH - *Nucleus Pulposus/metabolism MH - Tetracycline/pharmacology MH - Anti-Bacterial Agents/pharmacology MH - *Mesenchymal Stem Cells/metabolism PMC - PMC10671788 OTO - NOTNLM OT - Tet-off OT - intervertebral disc regeneration OT - mesenchymal stem cells OT - tetracyclin (Tet) regulatory system COIS- The authors declare no conflict of interest. EDAT- 2023/11/25 12:43 MHDA- 2023/11/27 12:44 PMCR- 2023/11/07 CRDT- 2023/11/25 01:14 PHST- 2023/09/30 00:00 [received] PHST- 2023/10/28 00:00 [revised] PHST- 2023/11/01 00:00 [accepted] PHST- 2023/11/27 12:44 [medline] PHST- 2023/11/25 12:43 [pubmed] PHST- 2023/11/25 01:14 [entrez] PHST- 2023/11/07 00:00 [pmc-release] AID - ijms242216024 [pii] AID - ijms-24-16024 [pii] AID - 10.3390/ijms242216024 [doi] PST - epublish SO - Int J Mol Sci. 2023 Nov 7;24(22):16024. doi: 10.3390/ijms242216024.