PDGF, TGF-beta, and FGF signaling is important for differentiation and growth of mesenchymal stem cells (MSCs): transcriptional profiling can identify markers and signaling pathways important in differentiation of MSCs into adipogenic, chondrogenic, and osteogenic lineages.
We compared the transcriptomes of marrow-derived mesenchymal stem cells (MSCs) with differentiated adipocytes, osteocytes, and chondrocytes derived from these MSCs. Using global gene-expression profiling arrays to detect RNA transcripts, we have identified markers that are specific for MSCs and their differentiated progeny. Further, we have also identified pathways that MSCs ... More
Ischemic Preconditioning Potentiates the Protective Effect of Stem Cells through Secretion of Exosomes by Targeting Mecp2 via miR-22.
Authors:Feng Y, Huang W, Wani M, Yu X, Ashraf M,
Journal:
PubMed ID:24558412
Mesenchymal stem cells (MSCs) have potential application for the treatment of ischemic heart diseases. Besides differentiation properties, MSCs protect ischemic cardiomyocytes by secretion of paracrine factors. In this study, we found exosomes enriched with miR-22 were secreted by MSCs following ischemic preconditioning (Exo(IPC)) and mobilized to cardiomyocytes where they reduced ... More
Critical steps in the isolation and expansion of adipose-derived stem cells for translational therapy.
Since the discovery of adipose-derived stem cells (ASCs), there have been high expectations of their putative clinical use. Recent advances support these expectations, and it is expected that the transition from pre-clinical and clinical studies to implementation as a standard treatment modality is imminent. However ASCs must be isolated and ... More
Serum-free, xeno-free culture media maintain the proliferation rate and multipotentiality of adipose stem cells in vitro.
BACKGROUND AIMS: Human adipose stem cells (ASC) are an abundant, readily available population of multipotent progenitor cells that reside in adipose tissue. ASC have been shown to have therapeutic applicability in pre-clinical studies, but a standardized expansion method for clinical cell therapy has yet to be established. Isolated ASC are ... More
Growth, differentiation capacity, and function of mesenchymal stem cells expanded in serum-free medium developed via combinatorial screening.
Authors:Crapnell K, Blaesius R, Hastings A, Lennon DP, Caplan AI, Bruder SP
Journal:Exp Cell Res
PubMed ID:23597555
The presence of serum in cell culture medium presents an obstacle to safe and efficient production of hMSCs for therapeutic purposes. Availability of defined medium will be crucial to elucidating the mechanism of action of hMSCs in many indications as well as a prerequisite to consistently produce cells with predictable ... More