Search results for "jelly"

Wharton's jelly mesenchymal stem cells differentiation towards hepatocyte-like cells: functional characterization and expression of immunomodulatory …

2014

Extending the usefulness of extraembryonic mesenchymal stem cellsin regenerative medicine: expression of novel markers, immunoregulatory molecules, a…

2010

Mesenchymal stem cells (MSC) are considered promising tools in regenerative medicine applications. Even if they are already applied clinically, their extended characterization is being increasingly viewed as a needed feature, in order to avoid contrasting results when translating “in vitro” experiments to “in vivo” approaches. We recently demonstrated in human MSC isolated from the umbilical cord matrix (HEMSC) the expression of novel markers indicative of their stemness, as well as differentiative and immune properties [1]. HEMSC were cultured and subject to multiple molecular and morphological analyses to determine the expression of markers of interest. Undifferentiated HEMSC expressed im…

Isolation and phenotypical characterization of mesenchymal stem cells from the Wharton's jelly of pre-term human umbilical cord.

2014

Non-classical type I HLAs and B7 costimulators revisited: analysis of expression and immunomodulatory role in undifferentiated and differentiated MSC…

2011

Introduction. Wharton’s jelly (WJ), the main constituent of umbilical cord, emerged as a reliable and uncontroversial source of mesenchymal stem cells (MSC). WJ-MSC show unique ability in crossing lineage borders, therefore being capable to trans-ifferentiate towards mature cytotypes derived from the three germ layers. As other fetal-associated cells, WJ-MSC express several immunomodulatory molecules, essential during the initial phases of human development and for the processes linked to the tolerance of the mother to the semiallogeneic embryo. Very few data are present in literature on the maintenance of the immune privilege of the naïve cells after performing differentiation. Our previou…

Characterization of the in vitro immunomodulatory properties of mesenchymal stem cells isolated from Wharton's jelly: new actors at play

2014

Shifting back the fetomaternal interface: WHarton's jelly mesenchymal stem cells immunomodulatory molecules and their journey from umbilical cord to …

2014

Wharton’s Jelly Mesenchymal Stromal Cells Support the Expansion of Cord Blood–derived CD34+Cells Mimicking a Hematopoietic Niche in a Direct Cell–cel…

2018

Wharton’s jelly mesenchymal stromal cells (WJ-MSCs) have been recently exploited as a feeder layer in coculture systems to expand umbilical cord blood–hematopoietic stem/progenitor cells (UCB-HSPCs). Here, we investigated the role of WJ-MSCs in supporting ex vivo UCB-HSPC expansion either when cultured in direct contact (DC) with WJ-MSCs or separated by a transwell system or in the presence of WJ-MSC–conditioned medium. We found, in short-term culture, a greater degree of expansion of UCB-CD34+cells in a DC system (15.7 ± 4.1-fold increase) with respect to the other conditions. Moreover, in DC, we evidenced two different CD34+cell populations (one floating and one adherent to WJ-MSCs) with …

New frontiers in regenerative medicine in cardiology: the potential of Wharton's jelly mesenchymal stem cells.

2013

Cardiomyopathies are still the first cause of death in the world. The identification of resident stem cells, comprising those derived from sub-endocardial stroma, suggests the possible self regeneration of the heart under autocrine/paracrine modulation in the cardiac microenvironment. Nevertheless, because of the limited in vivo regeneration potential of damaged cardiac tissue, the use of drugs and ultimately cardiac transplantation remain the common treatments of heart diseases and defects. The differentiative potential of embryonic and mesenchymal stem cells (MSCs) derived from different tissues (such as bone marrow and adipose tissue) was extensively explored in cell therapy for regenera…

Ambiente staminale e prospettive di transdifferenziamento verso il fenotipo osteoblastico

2009

Human umbilical cord expresses several vasoactive peptides involved in the local regulation of vascular tone: protein and gene expression of Orphanin…

2011

Full-term human umbilical cord contains three blood vessels: two arteries coiled around a vein and surrounded by Wharton’s jelly, a mucous tissue with few mesenchymal stromal cells and abundant extracellular matrix. Umbilical vessels lack innervations, thus endothelial cells must play a role in the control of blood flow. The aim of this study was to investigate in human umbilical cord the expression of five peptides that could be involved in the regulation of vascular tone: Orphanin FQ, Oxytocin, Atrial Natriuretic Peptide (ANP), endothelial Nitric Oxide Synthase (eNOS) and inducible Nitric Oxide Synthase (iNOS). The expression of these molecules in full-term human umbilical cord …