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Defined serum-free three-dimensional culture of umbilical cord-derived mesenchymal stem cells yields exosomes that promote fibroblast proliferation and migration in vitro

Research output: Contribution to journalArticlepeer-review

Farid N Faruqu, Revadee Liam-Or, Shuai Zhou, Rebecca Nip, Khuloud T Al-Jamal

Original languageEnglish
Article numbere21206
Pages (from-to)e21206
JournalFaseb Journal
Volume35
Issue number1
DOIs
PublishedJan 2021

Bibliographical note

Funding Information: Authors would like to thank Prof. Francesco Dazzi, Comprehensive Cancer Center, King's College London, for providing ucMSC. F. N. Faruqu was funded by the Malaysian government agency Majlis Amanah Rakyat (MARA, 330408285430). R. Liam‐Or is funded by King's Postgraduate Research International Scholarship, a bursary scheme by King's College London. K. T. Al‐Jamal acknowledges funding from the British Council (Newton Fund, 337313) and Wellcome Trust (WT103913). Funding Information: Authors would like to thank Prof. Francesco Dazzi, Comprehensive Cancer Center, King's College London, for providing ucMSC. F. N. Faruqu was funded by the Malaysian government agency Majlis Amanah Rakyat (MARA, 330408285430). R. Liam-Or is funded by King's Postgraduate Research International Scholarship, a bursary scheme by King's College London. K. T. Al-Jamal acknowledges funding from the British Council (Newton Fund, 337313) and Wellcome Trust (WT103913). Publisher Copyright: © 2020 Federation of American Societies for Experimental Biology Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

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Abstract

Stem cell-derived exosomes are emerging as novel and clinically relevant cell-free therapeutics for regenerative therapy. This work focused on investigating the stimulation of fibroblasts by exosomes derived from umbilical cord-derived mesenchymal stem cells (ucMSC) in a defined serum-free three-dimensional (3D) culture. 3D culture of ucMSC was carried out in medium supplemented with KnockOut serum replacement (KO-medium) using the Aggrewell system. ucMSC in KO-medium formed spheroids with maintained size and integrity throughout culture. This enabled the isolation of vesicles from ucMSC spheroids in KO-medium with sizes that fall within the exosomal size range and were positive for the expression of canonical exosomal markers CD63, CD9, CD81, Alix, and TSG101. The ucMSC-derived exosomes (ExoucMSC ) were shown to significantly increase the migration and proliferation of murine fibroblasts in vitro. To conclude, 3D culture of ucMSC in defined serum-free KO-medium formed viable spheroids which enabled the isolation of ExoucMSC with the potential of accelerating wound healing.

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