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The Ca2+ Channel Blocker Verapamil Inhibits the In Vitro Activation and Function of T Lymphocytes: A 2022 Reappraisal

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Résumé

Ca2+ channel blockers (CCBs) are commonly used to treat different cardiovascular conditions. These drugs disrupt the intracellular Ca2+ signaling network, inhibiting numerous cellular functions in different cells, including T lymphocytes. We explored the effect of the CCB verapamil on normal human peripheral blood T cell activation, proliferation, and cytokine production. Cells were activated by ligating CD3 or CD3/CD28 in the presence or absence of verapamil, and the expression of activation-induced cell surface molecules (CD25, CD40L, CD69, PD-1, and OX40), cell proliferation, and cytokine release were assessed by flow cytometry. Verapamil exerted a dose-dependent inhibitory effect on the expression of all the activation-induced cell surface molecules tested. In addition, verapamil diminished T cell proliferation induced in response to CD3/CD28 stimulation. Likewise, the production of Th1/Th17 and Th2 cytokines was also reduced by verapamil. Our data substantiate a potent in vitro suppressive effect of verapamil on T lymphocytes, a fact that might be relevant in patients receiving CCBs.

langue originaleAnglais
Numéro d'article1478
journalPharmaceutics
Volume14
Numéro de publication7
Les DOIs
Etat de la publicationPublié - juil. 2022

Financement

This research was partially funded by CONACYT (grant number A1-S-15601), and DGAPA/UNAM (grant number IN212519) to Y.R. The APC was funded by Y.R., R.G.-A. and L.D.P. The authors are indebted to Ángel Cárdenas-Hernández for the generous gift of the verapamil hydrochloride used in this work. The authors thank Erika Melchy for technical support, and the members of the Rosenstein and Possani laboratories for their valuable comments on this work. J.I.V.-B. and D.A.A.-V. were recipients of a graduate student fellowship from CONACYT (fellowship holder numbers 289448 and 894574).

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