Background: Artificial Mitochondrial Transfer or Transplant (AMT/T) can be used to reduce the stress and loss of viability of damaged cells. In MitoCeption, a type of AMT/T, the isolated mitochondria and recipient cells are centrifuged together at 4 °C and then co-incubated at 37 °C in normal culture conditions, inducing the transfer. Ultraviolet radiation (UVR) can affect mitochondria and other cell structures, resulting in tissue stress, aging, and immunosuppression. AMT/T could be used to repair UVR cellular and mitochondrial damage. We studied if a mitochondrial mix from different donors (Primary Allogeneic Mitochondrial Mix, PAMM) can repair UVR damage and promote cell survival. Results: Using a simplified adaption of the MitoCeption protocol, we used peripheral blood mononuclear cells (PBMCs) as the recipient cell model of the PAMM in order to determine if this protocol could repair UVR damage. Our results showed that when PBMCs are exposed to UVR, there is a decrease in metabolic activity, mitochondrial mass, and mtDNA sequence stability as well as an increase in p53 expression and the percentage of dead cells. When PAMM MitoCeption was used on UVR-damaged cells, it successfully transferred mitochondria from different donors to distinct PBMCs populations and repaired the observed UVR damage. Conclusion: Our results represent an advancement in the applications of MitoCeption and other AMT/T. We showed that PBMCs could be used as a PAMM source of mitochondria. We also showed that these mitochondria can be transferred in a mix from different donors (PAMM) to UVR-damaged, non-adherent primary cells. Additionally, we decreased the duration of the MitoCeption protocol.
Bibliographical noteFunding Information:
This research was funded by USFQ Collaboration Grant (institutional codes: HUBi 5501, USFQ Veterinary Medicine School Grants for Research; # 3281 and #10098) and SIME R&D. The funding bodies evaluated this project before its submission to BMC Biotechnology through grant proposals and bioethics review processes according to institutional criteria. Funding bodies did not play any role in the design, data collection, analysis, and interpretations of data or in writing the manuscript.
© 2019 The Author(s).
- Artificial mitochondria transfer / transplant (AMTT)
- Cell repair
- Cellular damage
- Primary allogeneic mitochondrial mix (PAMM)
- Primary immune cells
- Ultraviolet radiation (UVR)