Autologous bone marrow-derived mesenchymal stromal cells in the treatment of fistulising Crohn's disease

Rachele Ciccocioppo, Maria Ester Bernardo, Adele Sgarella, Rita Maccario, Maria Antonietta Avanzini, Cristina Ubezio, Antonella Minelli, Costanza Alvisi, Alessandro Vanoli, Fabrizio Calliada, Paolo Dionigi, Cesare Perotti, Franco Locatelli, Gino Roberto Corazza

Research output: Contribution to journalArticle

Abstract

Objective: External fistulas represent a disabling manifestation of Crohn's disease with a difficult curability and a high relapse rate despite a large therapeutic armamentarium. Stem cell therapy is a novel and promising approach for treatment of chronic inflammatory conditions. We therefore investigated the feasibility, safety and efficacy of serial intrafistular injections of autologous bone marrow-derived mesenchymal stromal cells (MSCs) in the treatment of fistulising Crohn's disease. Patients and methods: We enrolled 12 consecutive outpatients (eight males, median age 32 years) refractory to or unsuitable for current available therapies. MSCs were isolated from bone marrow and expanded ex vivo to be used for both therapeutic and experimental purposes. Ten patients (two refused) received intrafistular MSC injections (median 4) scheduled every 4 weeks, and were monitored by surgical, MRI and endoscopic evaluation for 12 months afterwards. The feasibility of obtaining at least 50×106 MSCs from each patient, the appearance of adverse events, and the efficacy in terms of fistula healing and reduction of both Crohn's disease and perianal disease activity indexes were evaluated. In addition, the percentage of both mucosal and circulating regulatory T cells expressing FoxP3, and the ability of MSCs to influence mucosal T cell apoptosis were investigated. Results: MSC expansion was successful in all cases; sustained complete closure (seven cases) or incomplete closure (three cases) of fistula tracks with a parallel reduction of Crohn's disease and perianal disease activity indexes (p

Original languageEnglish
Pages (from-to)788-798
Number of pages11
JournalGut
Volume60
Issue number6
DOIs
Publication statusPublished - Jun 2011

ASJC Scopus subject areas

  • Gastroenterology

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