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miR-125b and miR-532-3p predict the efficiency of rituximab-mediated lymphodepletion in chronic lymphocytic leukemia patients. A French Innovative Leukemia Organization study

The underlying mechanisms of rituximab action remain incompletely understood in chronic lymphocytic leukemia. Recent data suggest that circulating micro-ribonucleic acids correlate with chronic lymphocytic leukemia progression and response to rituximab. Our study aimed at identifying circulating mic...

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Published in:Haematologica (Roma) 2017-04, Vol.102 (4), p.746-754
Main Authors: Gagez, Anne-Laure, Duroux-Richard, Isabelle, Leprêtre, Stéphane, Orsini-Piocelle, Frédérique, Letestu, Rémi, De Guibert, Sophie, Tuaillon, Edouard, Leblond, Véronique, Khalifa, Olfa, Gouilleux-Gruart, Valérie, Banos, Anne, Tournilhac, Olivier, Dupuis, Jehan, Jorgensen, Christian, Cartron, Guillaume, Apparailly, Florence
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container_title Haematologica (Roma)
container_volume 102
creator Gagez, Anne-Laure
Duroux-Richard, Isabelle
Leprêtre, Stéphane
Orsini-Piocelle, Frédérique
Letestu, Rémi
De Guibert, Sophie
Tuaillon, Edouard
Leblond, Véronique
Khalifa, Olfa
Gouilleux-Gruart, Valérie
Banos, Anne
Tournilhac, Olivier
Dupuis, Jehan
Jorgensen, Christian
Cartron, Guillaume
Apparailly, Florence
description The underlying mechanisms of rituximab action remain incompletely understood in chronic lymphocytic leukemia. Recent data suggest that circulating micro-ribonucleic acids correlate with chronic lymphocytic leukemia progression and response to rituximab. Our study aimed at identifying circulating micro-ribonucleic acids that predict response to rituximab monotherapy in chronic lymphocytic leukemia patients. Using a hierarchical clustering of micro-ribonucleic acid expression profiles discriminating 10 untreated patients with low or high lymphocyte counts, we found 26 micro-ribonucleic acids significantly deregulated. Using individual real-time reverse transcription polymerase chain reaction, the expression levels of micro-ribonucleic acids representative of these two clusters were further validated in a larger cohort (n=61). MiR-125b and miR-532-3p were inversely correlated with rituximab-induced lymphodepletion ( =0.020 and =0.001, respectively) and with the CD20 expression on CD19 cells ( =0.0007 and
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A French Innovative Leukemia Organization study</title><source>Freely Accessible Science Journals - check A-Z of ejournals</source><source>PubMed Central</source><creator>Gagez, Anne-Laure ; Duroux-Richard, Isabelle ; Leprêtre, Stéphane ; Orsini-Piocelle, Frédérique ; Letestu, Rémi ; De Guibert, Sophie ; Tuaillon, Edouard ; Leblond, Véronique ; Khalifa, Olfa ; Gouilleux-Gruart, Valérie ; Banos, Anne ; Tournilhac, Olivier ; Dupuis, Jehan ; Jorgensen, Christian ; Cartron, Guillaume ; Apparailly, Florence</creator><creatorcontrib>Gagez, Anne-Laure ; Duroux-Richard, Isabelle ; Leprêtre, Stéphane ; Orsini-Piocelle, Frédérique ; Letestu, Rémi ; De Guibert, Sophie ; Tuaillon, Edouard ; Leblond, Véronique ; Khalifa, Olfa ; Gouilleux-Gruart, Valérie ; Banos, Anne ; Tournilhac, Olivier ; Dupuis, Jehan ; Jorgensen, Christian ; Cartron, Guillaume ; Apparailly, Florence</creatorcontrib><description>The underlying mechanisms of rituximab action remain incompletely understood in chronic lymphocytic leukemia. Recent data suggest that circulating micro-ribonucleic acids correlate with chronic lymphocytic leukemia progression and response to rituximab. Our study aimed at identifying circulating micro-ribonucleic acids that predict response to rituximab monotherapy in chronic lymphocytic leukemia patients. Using a hierarchical clustering of micro-ribonucleic acid expression profiles discriminating 10 untreated patients with low or high lymphocyte counts, we found 26 micro-ribonucleic acids significantly deregulated. Using individual real-time reverse transcription polymerase chain reaction, the expression levels of micro-ribonucleic acids representative of these two clusters were further validated in a larger cohort (n=61). MiR-125b and miR-532-3p were inversely correlated with rituximab-induced lymphodepletion ( =0.020 and =0.001, respectively) and with the CD20 expression on CD19 cells ( =0.0007 and &lt;0.0001, respectively). analyses of genes putatively targeted by both micro-ribonucleic acids revealed a central role of the interleukin-10 pathway and CD20 (MS4A1) family members. Interestingly, both micro-ribonucleic acids were negatively correlated with expression, while they were positively correlated with and Our results identify novel circulating predictive biomarkers for rituximab-mediated lymphodepletion efficacy in chronic lymphocytic leukemia, and suggest a novel molecular mechanism responsible for the rituximab mode of action that bridges miR-125b and miR-532-3p and CD20 family members. 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subjects Antineoplastic Combined Chemotherapy Protocols - adverse effects
Antineoplastic Combined Chemotherapy Protocols - therapeutic use
Biomarkers, Tumor
Cancer
Cluster Analysis
Diagnosis, Differential
Female
Gene Expression Regulation, Leukemic
Genotype
Hematology
Human health and pathology
Humans
Immunology
Immunotherapy
Leukemia, Lymphocytic, Chronic, B-Cell - diagnosis
Leukemia, Lymphocytic, Chronic, B-Cell - drug therapy
Leukemia, Lymphocytic, Chronic, B-Cell - genetics
Leukemia, Lymphocytic, Chronic, B-Cell - mortality
Life Sciences
Lymphocyte Depletion
Lymphocytosis - diagnosis
Lymphocytosis - genetics
Male
MicroRNAs - blood
MicroRNAs - genetics
Middle Aged
Models, Biological
Prognosis
Rituximab - administration & dosage
RNA Interference
Transcriptome
Treatment Outcome
title miR-125b and miR-532-3p predict the efficiency of rituximab-mediated lymphodepletion in chronic lymphocytic leukemia patients. A French Innovative Leukemia Organization study
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