Rat Mesenchymal Stem Cells: RMSC. Isolated from the bone marrow, these cells support hematopoietic growth and differentiation, and can be induced to produce bone, cartilage, fat, neurons and hepatocytes.
Rat Mesenchymal Stem Cells: RMSC
Rat Mesenchymal Stem Cells (RMSC) are a versatile population of adult stem cells isolated from rat bone marrow.
Description
Rat Mesenchymal Stem Cells (RMSC) are a versatile population of adult stem cells characterized by their significant developmental plasticity and capacity for extensive proliferation in vitro. While bone marrow is primarily recognized as the major hematopoietic organ, it also serves as the richest source of mesenchymal stromal cells. These cells maintain multipotency, possessing the ability to differentiate into various mature cells of connective tissue lineages, such as bone-forming osteoblast cells, chondrocytes, and adipocytes. Furthermore, research has expanded our understanding of their potential to differentiate into neuroectodermal (neurons) and endodermal (hepatocytes) lineages.
RMSC isolated from rat bone marrow (often abbreviated as rBMSC) are a foundational tool in stem cell research. Unlike an immortalized cell line, primary RMSC provide an authentic model for investigating the complex signaling cascades that govern tissue maintenance and repair.
The therapeutic efficacy and directed differentiation of RMSC are heavily dependent on their microenvironment. Ongoing studies into their biological characteristics have revealed several advanced features that dictate their behavior:
- Migration and Homing: Signaling molecules play a critical role in recruitment; for example, TGF-β (a transforming growth factor-beta) stimulates vascular smooth muscle cells to produce MCP-1, which effectively attracts marrow stromal cells to sites of injury. Similarly, pharmacological agents like VPA and lithium have been shown to modulate HDAC-CXCR4 and GSK-3β-MMP-9 pathways to enhance cell migration.
- Environmental Cues: The biological characterization of these cells confirms that substrate physical topography and surface adhesion properties are key regulators of cell fate. By using a biomimetic scaffold or modifying surface materials, researchers can control cell adhesion and steer the differentiation of RMSC toward appropriate tissue constructs.
- Expansion Protocols: To ensure consistency in experiments, high-quality mesenchymal stem cell medium is required to maintain multipotency. While traditional protocols often rely on serum, modern research materials prioritize defined conditions to minimize variability during cell expansion.
The clinical translation of mesenchymal stem cells relies on understanding how these cells interact with damaged tissues. Because they can be easily harvested as a cell suspension, RMSC are uniquely suited for numerous potential clinical applications.
1. Tissue Repair and Regeneration
RMSC are a premier cell type for studying nerve regeneration. Studies have demonstrated that combining low-level laser therapy with the transplantation of marrow stromal stem cells results in significantly greater functional recovery following nerve crush injuries compared to stem cell delivery alone.
2. Broadening the Therapeutic Scope
While bone marrow remains the standard, investigators also explore other sources, such as umbilical cord and adipose tissue, to compare their regenerative capacities. The ultimate goal in regenerative medicine is to harness the growth factor secretion profiles of RMSC to facilitate bone formation and repair of complex injuries.
As the isolation techniques and quality control standards for RMSC continue to evolve, these cells remain essential for bridging the gap between basic laboratory discovery and future clinical applications. By modulating the extracellular matrix and refining the delivery of these cells to target sites, researchers are moving closer to the reliable production of functional tissues in vivo.
Rat Mesenchymal Stem Cells (RMSC) have the potential to maintain multipotency and proliferate extensively in vitro. Bone marrow is the major blood creating organ, but in addition to supporting hematopoietic growth and differentiation, marrow stromal cells can be induced to produce cells of other connective tissues, such as bone, cartilage, and fat, as well as cells from neuroectodermal (neurons) and endodermal (hepatocytes) lineages.
RMSC from Cell Applications, Inc. have been used to demonstrate:
- TGF-β stimulates production of MCP-1 by vascular smooth muscle cells, which attracts bone marrow stromal cells
- Cell migration can be stimulated by VPA and lithium through HDAC-CXCR4 and GSK-3β-MMP-9, respectively
- Therapeutic potential of marrow stromal stem cells depending on the extracellular matrix properties
- Combination of low-level laser therapy and transplantation of marrow stromal stem cells results in greater functional recovery after nerve crush injury
- Direct stem cell differentiation by altering physical topography of the substrate
- Surface materials to control cell-adhesion properties
Details
| Tissue: | Normal healthy rat bone marrow | |
|---|---|---|
| QC | No bacteria, yeast, fungi, mycoplasma | |
| Character | Accumulate lipid in Differentiation Med | |
| Bioassay | Attach, spread proliferate in Growth Med | |
| Cryovial | 500,000 RMSC (2nd passage) in RMSC Basal Medium w/ 10% FBS, 10% DMSO | |
| Kit | Cryovial frozen RMSC (R492-05a), Growth Medium (R419-500), Subcltr Rgnt Kit (090K) | |
| Proliferating | Shipped in Gr Med, 2nd psg (flasks or plates) | |
| Doublings | At least 10 | |
| Applications | Laboratory research use only (RUO). Not for human, clinical, diagnostic or veterinary use. |
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