PMID- 35986305 OWN - NLM STAT- MEDLINE DCOM- 20220823 LR - 20240516 IS - 1757-6512 (Electronic) IS - 1757-6512 (Linking) VI - 13 IP - 1 DP - 2022 Aug 19 TI - Bone marrow mesenchymal stromal cells in a 3D system produce higher concentration of extracellular vesicles (EVs) with increased complexity and enhanced neuronal growth properties. PG - 425 LID - 10.1186/s13287-022-03128-z [doi] LID - 425 AB - PURPOSE: Extracellular vesicles (EVs) derived from mesenchymal stromal cells (MSCs) have been demonstrated to possess great potential in preclinical models. An efficient biomanufacturing platform is necessary for scale up production for clinical therapeutic applications. The aim of this study is to investigate the potential differences in neuro-regenerative properties of MSC-derived EVs generated in 2D versus 3D culture systems. METHOD: Human bone marrow MSCs (BM-MSCs) were cultured in 2D monolayer and 3D bioreactor systems. EVs were isolated using ultracentrifugation followed by size and concentration measurements utilizing dynamic light scattering (NanoSight) and by fluorescence staining (ExoView). Mouse trigeminal ganglia (TG) neurons were isolated from BALB/c mice and cultured in the presence or absence of EVs derived from 2D or 3D culture systems. Neuronal growth and morphology were monitored over 5 days followed by immunostaining for beta3 tubulin. Confocal images were analyzed by Neurolucida software to obtain the density and length of the neurites. RESULTS: The NanoSight tracking analysis revealed a remarkable increase (24-fold change) in the concentration of EVs obtained from the 3D versus 2D culture condition. ExoView analysis showed a significantly higher concentration of CD63, CD81, and CD9 markers in the EVs derived from 3D versus 2D conditions. Furthermore, a notable shift toward a more heterogeneous phenotype was observed in the 3D-derived EVs compared to those from 2D culture systems. EVs derived from both culture conditions remarkably induced neurite growth and elongation after 5 days in culture compared to untreated control. Neurolucida analysis of the immunostaining images (beta3 tubulin) showed a significant increase in neurite length in TG neurons treated with 3D- versus 2D-derived EVs (3301.5 mum vs. 1860.5 mum, P < 0.05). Finally, Sholl analysis demonstrated a significant increase in complexity of the neuronal growth in neurons treated with 3D- versus 2D-derived EVs (P < 0.05). CONCLUSION: This study highlights considerable differences in EVs obtained from different culture microenvironments, which could have implications for their therapeutic effects and potency. The 3D culture system seems to provide a preferred environment that modulates the paracrine function of the cells and the release of a higher number of EVs with enhanced biophysical properties and functions in the context of neurite elongation and growth. CI - (c) 2022. The Author(s). FAU - Jalilian, Elmira AU - Jalilian E AUID- ORCID: 0000-0003-4121-0517 AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. jalilian@uic.edu. AD - Richard and Loan Hill Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, USA. jalilian@uic.edu. FAU - Massoumi, Hamed AU - Massoumi H AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. AD - Richard and Loan Hill Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, USA. FAU - Bigit, Bianca AU - Bigit B AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. FAU - Amin, Sohil AU - Amin S AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. FAU - Katz, Eitan A AU - Katz EA AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. FAU - Guaiquil, Victor H AU - Guaiquil VH AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. FAU - Anwar, Khandaker N AU - Anwar KN AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. FAU - Hematti, Peiman AU - Hematti P AD - Department of Medicine, Hematology/Oncology Division, University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI, 53705, USA. FAU - Rosenblatt, Mark I AU - Rosenblatt MI AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. FAU - Djalilian, Ali R AU - Djalilian AR AD - Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, 1855 W. Taylor Street, MC 648, Chicago, IL, 60612, USA. adjalili@uic.edu. LA - eng GR - EY031809/NH/NIH HHS/United States GR - UG3 EY031809/EY/NEI NIH HHS/United States GR - P30 EY001792/EY/NEI NIH HHS/United States GR - EY01792/NH/NIH HHS/United States GR - TR002002/NH/NIH HHS/United States GR - UH3 EY031809/EY/NEI NIH HHS/United States GR - KL2 TR002002/TR/NCATS NIH HHS/United States GR - R01 EY024349/EY/NEI NIH HHS/United States GR - EY024349/NH/NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20220819 PL - England TA - Stem Cell Res Ther JT - Stem cell research & therapy JID - 101527581 RN - 0 (Tubulin) SB - IM MH - Animals MH - Bone Marrow MH - Bone Marrow Cells MH - *Extracellular Vesicles/physiology MH - Humans MH - *Mesenchymal Stem Cells MH - Mice MH - Tubulin PMC - PMC9389821 OTO - NOTNLM OT - 2D culture OT - 3D culture OT - Bone marrow mesenchymal stromal cell OT - Exosomes OT - Extracellular vesicles OT - Neuronal growth COIS- The authors declare that they have no competing interests. EDAT- 2022/08/20 06:00 MHDA- 2022/08/24 06:00 PMCR- 2022/08/19 CRDT- 2022/08/19 23:36 PHST- 2022/06/14 00:00 [received] PHST- 2022/08/08 00:00 [accepted] PHST- 2022/08/19 23:36 [entrez] PHST- 2022/08/20 06:00 [pubmed] PHST- 2022/08/24 06:00 [medline] PHST- 2022/08/19 00:00 [pmc-release] AID - 10.1186/s13287-022-03128-z [pii] AID - 3128 [pii] AID - 10.1186/s13287-022-03128-z [doi] PST - epublish SO - Stem Cell Res Ther. 2022 Aug 19;13(1):425. doi: 10.1186/s13287-022-03128-z.