Titre :

NK cell activation and recovery of NK cell subsets in lymphoma patients after obinutuzumab and lenalidomide treatment

Auteur(s) :

Dang-Nghiem, Vo [Auteur]
Alexia, Catherine [Auteur]
Allende-Vega, Nerea [Auteur]
Morschhauser, Franck [Auteur]
Groupe de Recherche sur les formes Injectables et les Technologies Associées - ULR 7365 [GRITA]
Houot, Roch [Auteur]
Menard, Cedric [Auteur]
Tarte, Karin [Auteur]
Cartron, Guillaume [Auteur]
Villalba, Martin [Auteur]

Titre de la revue :

Oncoimmunology

Nom court de la revue :

OncoImmunology

Numéro :

7

Date de publication :

2018

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

Obinutuzumab (OBZ) shows stronger antibody-dependent cell cytotoxicity (ADCC) compared to rituximab and improved clinical activity for treating certain CD20+ neoplasia. However, the efficacy of monoclonal antibody (mAb) ...
Lire la suite >Obinutuzumab (OBZ) shows stronger antibody-dependent cell cytotoxicity (ADCC) compared to rituximab and improved clinical activity for treating certain CD20+ neoplasia. However, the efficacy of monoclonal antibody (mAb) as a monotherapy is limited. Natural Killer (NK) cells are mediators of ADCC. Hematological cancer patients possess antitumor NK cells that are unable to control disease, possibly because they are dysfunctional. The immunomodulatory drug lenalidomide (LEN) could be a treatment to restore exhausted NK cell cytotoxic functions. The clinical trial GALEN is a Phase Ib/II study of OBZ combined with LEN for the treatment of relapsed/refractory follicular and aggressive (DLBCL and MCL) B-cell Lymphoma. During treatment, we analyzed specific aspects of NK cell biology. Treatment reversed the immature NK phenotype of patients and increased expression of NK activating receptors. Inhibitory receptors were either unchanged or decreased. There was a strong NK response at the end of the 1st cycle: NK number and intracellular granzyme B (GrzB) expression decreased, degranulation increased and NK responded better to allogeneic target challenge. Moreover, the interaction of NK cells with B cell targets, measured by trogocytosis, decreased during treatment. At the end of treatment, when target cells had been wiped out, the proportion of reactive NK cells (CD69+, CD45RARO+, CD107a+, CD19+) strongly decreased. Because all patients received LEN and OBZ, it was uncertain which drug was responsible of our observations, or even if a combination of both products was necessary for the described effects on this lymphocyte lineage.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CHU Lille

Collections :

• Groupe de Recherche sur les formes Injectables et les Technologies Associées (GRITA) - ULR 7365

Équipe(s) de recherche :

Innovation/évaluation des médicaments injectables

Date de dépôt :

2019-02-26T17:06:56Z