Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive Disorder

There is growing evidence that inflammation plays a role in major depressive disorder (MDD). As the main role of regulatory T cells (Tregs) is to control inflammation, this might denote a Treg insufficiency in MDD. However, neither a qualitative nor a quantitative defect of Tregs has been ascertaine...

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Main Authors: Pierre Ellul, Encarnita Mariotti-Ferrandiz, Marion Leboyer, David Klatzmann
Format: Article
Language:English
Published: Frontiers Media S.A. 2018-03-01
Series:Frontiers in Neurology
Subjects:
Online Access:http://journal.frontiersin.org/article/10.3389/fneur.2018.00167/full
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author Pierre Ellul
Encarnita Mariotti-Ferrandiz
Marion Leboyer
Marion Leboyer
Marion Leboyer
David Klatzmann
author_facet Pierre Ellul
Encarnita Mariotti-Ferrandiz
Marion Leboyer
Marion Leboyer
Marion Leboyer
David Klatzmann
author_sort Pierre Ellul
collection DOAJ
description There is growing evidence that inflammation plays a role in major depressive disorder (MDD). As the main role of regulatory T cells (Tregs) is to control inflammation, this might denote a Treg insufficiency in MDD. However, neither a qualitative nor a quantitative defect of Tregs has been ascertained and no causality direction between inflammation and depression has been established. Here, after reviewing the evidence supporting a relation between Treg insufficiency and MDD, we conclude that a novel therapeutic approach based on Treg stimulation could be valuable in at least the subset of patients with inflammatory MDD. Low-dose interleukin-2 appears to be a good candidate as it is not only a safe stimulator of Tregs in humans but also an inhibitor of pro-inflammatory Th17 lymphocytes. Here, we discuss that a thorough immune investigation as well as immunotherapy will be heuristic for deciphering the pathophysiology of MDD.
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spelling doaj.art-357165af2d97487680bf3783ef8029142022-12-22T00:11:19ZengFrontiers Media S.A.Frontiers in Neurology1664-22952018-03-01910.3389/fneur.2018.00167343680Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive DisorderPierre Ellul0Encarnita Mariotti-Ferrandiz1Marion Leboyer2Marion Leboyer3Marion Leboyer4David Klatzmann5Sorbonne Université, Assistance Publique - Hôpitaux de Paris (AP-HP), Robert Debré Hospital, Department of Child and Adolescent Psychiatry, Paris, FranceSorbonne Université, INSERM, Immunology-Immunopathology-Immunotherapy (i3), AP-HP, Hôpital Pitié-Salpêtrière, Biotherapy (CIC-BTi) and Inflammation-Immunopathology-Biotherapy Department (i2B), Paris, FranceTeam 15, INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Créteil, FranceFaculté de Médecine, Université Paris-Est Créteil Val de Marne (UPEC), DHU PePSY, Pôle de Psychiatrie et d’addictologie, Hôpitaux Universitaires Mondor, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, FranceFondation FondaMental, Créteil, FranceSorbonne Université, INSERM, Immunology-Immunopathology-Immunotherapy (i3), AP-HP, Hôpital Pitié-Salpêtrière, Biotherapy (CIC-BTi) and Inflammation-Immunopathology-Biotherapy Department (i2B), Paris, FranceThere is growing evidence that inflammation plays a role in major depressive disorder (MDD). As the main role of regulatory T cells (Tregs) is to control inflammation, this might denote a Treg insufficiency in MDD. However, neither a qualitative nor a quantitative defect of Tregs has been ascertained and no causality direction between inflammation and depression has been established. Here, after reviewing the evidence supporting a relation between Treg insufficiency and MDD, we conclude that a novel therapeutic approach based on Treg stimulation could be valuable in at least the subset of patients with inflammatory MDD. Low-dose interleukin-2 appears to be a good candidate as it is not only a safe stimulator of Tregs in humans but also an inhibitor of pro-inflammatory Th17 lymphocytes. Here, we discuss that a thorough immune investigation as well as immunotherapy will be heuristic for deciphering the pathophysiology of MDD.http://journal.frontiersin.org/article/10.3389/fneur.2018.00167/fullregulatory T cellmajor depressive disordersinflammationimmunotherapylow-dose interleukin-2
spellingShingle Pierre Ellul
Encarnita Mariotti-Ferrandiz
Marion Leboyer
Marion Leboyer
Marion Leboyer
David Klatzmann
Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive Disorder
Frontiers in Neurology
regulatory T cell
major depressive disorders
inflammation
immunotherapy
low-dose interleukin-2
title Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive Disorder
title_full Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive Disorder
title_fullStr Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive Disorder
title_full_unstemmed Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive Disorder
title_short Regulatory T Cells As Supporters of Psychoimmune Resilience: Toward Immunotherapy of Major Depressive Disorder
title_sort regulatory t cells as supporters of psychoimmune resilience toward immunotherapy of major depressive disorder
topic regulatory T cell
major depressive disorders
inflammation
immunotherapy
low-dose interleukin-2
url http://journal.frontiersin.org/article/10.3389/fneur.2018.00167/full
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