Volume 59, Issue 4 pp. 1300-1311
CELLULAR THERAPIES

Leukoreduction system chambers are a reliable cellular source for the manufacturing of T-cell therapeutics

Gabrielle Boudreau

Gabrielle Boudreau

Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada

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Cédric Carli

Cédric Carli

Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada

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Caroline Lamarche

Caroline Lamarche

Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada

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Caroline Rulleau

Caroline Rulleau

Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada

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Guillaume Bonnaure

Guillaume Bonnaure

Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada

Medical Affairs and Innovation, Héma-Québec, Québec, Québec, Canada

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Sonia Néron

Sonia Néron

Medical Affairs and Innovation, Héma-Québec, Québec, Québec, Canada

Department of Biochemistry, Microbiology and Bio-informatics, Université Laval, Québec, Québec, Canada

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Jean-Sébastien Delisle

Corresponding Author

Jean-Sébastien Delisle

Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada

Hematology-Oncology Division, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada

Department of Medicine, Université de Montréal, Montreal, Québec, Canada

Address reprint requests to: Jean-Sébastien Delisle, Centre de Recherche de l'Hôpital Maisonneuve-Rosemont, 5415 boul. de L'Assomption, Montréal, QC H1T 2M4, Canada; e-mail: [email protected]Search for more papers by this author
First published: 27 December 2018
Citations: 11
This work was supported by a Canadian National Transplant Research Program (CNTRP) Astellas Research Innovation Grant funded by Astellas Pharma Canada, Inc., and jointly established by Astellas Pharma Canada, Inc.

Abstract

BACKGROUND

Following solid organ or hematopoietic cell transplantation, refractory opportunistic viral reactivations are a significant cause of morbidity and mortality but can effectively be controlled by virus-specific T-cell transfer. Among effective and safe strategies is the use of “third-party” (neither from the transplant donor nor recipient) virus-specific T cells that can be manufactured from healthy donors and used as “off-the-shelf” therapies. Leukoreduction system chambers (LRSCs), recovered after routine plateletpheresis, were evaluated as a potential source of peripheral blood mononuclear cells (PBMCs) for the manufacturing of clinical-scale virus-specific T cell.

STUDY DESIGN AND METHODS

PBMCs from the same donors obtained either from LRSCs or peripheral blood were compared, focusing on T-cell function and phenotype as well as the potential to generate cytomegalovirus (CMV)-specific T-cell lines from both CMV seropositive and seronegative donors.

RESULTS

PBMCs from both sources were comparable except for a transient downregulation of CD62L expression on freshly extracted PBMCs from LRSCs. Both nonspecific stimulation using anti-CD3/CD28 antibodies and CMV peptides revealed that LRSCs or blood T cells were equivalent in terms of expansion, differentiation, and function. Moreover, PBMCs from LRSCs can be used to generate autologous monocyte-derived dendritic cells to prime and expand CMV-specific T cells from seronegative donors.

CONCLUSION

LRSCs are a reliable source of PBMCs for the generation of virus-specific T cells for immunotherapy. These findings have implications for the development of third-party therapeutic T-cell products from well-characterized blood product donors.

CONFLICT OF INTEREST

The authors have disclosed no conflicts of interest.

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