5 research outputs found

    Phenotypic and functional study of progenitor mesenchymal and hematopoietic cells of placenar blood in comparison of the bone marrow and the adult peripheral blood

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    Les cellules souches mĂ©senchymateuses (CSM) sont des cellules souches adultes qui sont Ă  l’origine des cellules des lignages ostĂ©oblastique (O), adipocytaire (A) et chondroblastique (C). Les CSM ont initialement trouvĂ©es dans la moelle osseuse mais il en existe Ă©galement dans d’autres tissus comme le sang de cordon ombilical (SCO). DotĂ©es d’un potentiel rĂ©gĂ©nĂ©ratif, les CSM peuvent utilisĂ©es dans diverses pathologies dĂ©gĂ©nĂ©ratives dans un but de rĂ©paration tissulaire. En outre, leurs propriĂ©tĂ©s immunosuppressives ont conduit Ă  envisager leur utilisation dans un but d’immunomodulation comme lors des rĂ©actions de greffon contre l’hĂŽte dans les greffes de cellules souches hĂ©matopoĂŻĂ©tiques (CSH) allo-gĂ©niques. Le but essentiel de ce travail a Ă©tĂ© de comparer les caractĂ©ristiques des CSM issues du SCO en comparaison de celles issues de la moelle osseuse (MO). Dans l’optique d’applications en mĂ©decine rĂ©gĂ©nĂ©rative, nous avons tout d’abord testĂ© la possibilitĂ© d’utiliser, dans les milieux de culture d’expansion des CSM de SCO et de MO, un lysat plaquettaire d’origine humaine (HPL) comme substitut au sĂ©rum de veau fƓtal (SVF) source possible de contaminations.The mesenchymal stem cells (MSC) are adult stem cells which are at the origin of the ostebiastic lignage cells (O), adipocytes (A) and chondrobiasts (C). The MSC are initially found in the bone marrow (BM) but it also exists there in other tissues as the umbilical cord blood (UCB).Endowed with a regenerative potential, MSC can used in diverse degenerative pathologies in a purpose of tissular repair. Besides, their immunosuppressive properties allowed to envisage their use in a purpose of immunomodulation as during the reactions of transplant against the host in allogenic hematopoietic stem cell transplants (HSC). The essential purpose of this work was to compare the characteristics of the MSC derived from the UCB in comparison to those stemming from the bone marrow (BM)

    Immunophenotyping of hematopoietic progenitor cells: Comparison between cord blood and adult mobilized blood grafts

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    AIM: To study the immunophenotype of hematopoietic progenitor cells from cord blood (CB) grafts (n = 39) in comparison with adult apheresis grafts (AG, n = 229) and pre-apheresis peripheral blood (PAPB) samples (n = 908) using flow cytometry analysis
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