www.impactjournals.com/oncotarget/ Oncotarget, Vol. 7, No. 6 MiRNAs and piRNAs from bone marrow mesenchymal stem cell extracellular vesicles induce cell survival and inhibit cell differentiation of cord blood hematopoietic stem cells: a new insight in transplantation Luciana De Luca1, Stefania Trino1, Ilaria Laurenzana1, Vittorio Simeon1, Giovanni Calice1, Stefania Raimondo2, Marina Podestà3, Michele Santodirocco4, Lazzaro Di Mauro4, Francesco La Rocca1, Antonella Caivano1, Annalisa Morano1, Francesco Frassoni5, Daniela Cilloni2, Luigi Del Vecchio6,7,*, Pellegrino Musto8,* 1 Laboratory of Preclinical and Translational Research, IRCCS-Centro di Riferimento Oncologico della Basilicata (CROB), Rionero in Vulture, 85028, Italy 2Department of Clinical and Biological Sciences, University of Turin, Turin 10126, Italy 3Stem Cell Center, S. Martino Hospital, Genova 16132, Italy 4 Transfusion Medicine Unit, Puglia Cord Blood Bank, IRCCS-Casa Sollievo della Sofferenza, San Giovanni Rotondo, 71013, Italy 5Laboratorio Cellule Staminali post natali e Terapie Cellulari, Giannina Gaslini Institute, Genova 16148, Italy 6 CEINGE-Biotecnologie Avanzate S.C.a R.L., Naples, 80145, Italy 7Department of Molecular Medicine and Medical Biotechnologies, Federico II University, Naples 80131, Italy 8Scientific Direction, IRCCS-Centro di Riferimento Oncologico Basilicata (CROB), Rionero in Vulture, 85028, Italy *These authors contributed equally to this work Correspondence to: Luciana De Luca, e-mail:
[email protected] Keywords: mesenchymal stem cells, extracellular vesicles, umbilical cord blood stem cells, microRNAs, piRNAs Received: June 15, 2015 Accepted: December 05, 2015 Published: December 29, 2015 ABSTRACT Hematopoietic stem cells (HSC), including umbilical cord blood CD34+ stem cells (UCB-CD34+), are used for the treatment of several diseases. Although different studies suggest that bone marrow mesenchymal stem cells (BM-MSC) support hematopoiesis, the exact mechanism remains unclear.