I have come across studies that directly use BMMSC and induce it to either adipocytes/chondrocytes but did not characterize it beforehand. Will it become an issue? Thanks
I think that to be able to submit a paper (at least to a higher impact journal) you would need to show tri-lineage differentiation capability and as well as characterize the cells using flow cytometry.
I would also agree with everyone. However, it depends on your isolation procedure as to what cell type you are actually isolating. That is the reason why characterization is so important. Bone marrow contains a multitude of cell types, i.e., hematopoietic cells, HSCs, adipocytes, unipotent adipoblasts, fibroblasts, bipotent adipofibroblasts, chondroblasts, osteoblasts, BMMSC, VSELs, MAPCs, USSC, MIAMI, and BMSCs, just to name a few. Because VSELs and MAPCs have been reported as being pluripotent, rather than mesodermal - tripotent, I would suggest characterization for cell types from all three germ layer lineages, i.e., ectoderm, mesoderm, and endoderm, utilizing cell type-specific recombinant inductive agents. Also realize that a mixed population of adipoblasts, chondroblasts and osteoblasts in combination will give the same results as a pure population of the tripotent adipo-chondro-osteoblast cells. While it is an added series of steps, the best method is to clone from a single cell. That way you know that the resultant population you are working with is a pure population of cells and not a mixture of unipotent progenitor cells.
Thank you everyone for the response and suggestions. I am working to induce them to become chondrocytes. Still in my early stage. i managed to get the expression for the cartilage specific marker (collagen type 2) and some sGAG content. But perhaps people will query whether or not I got the 'right' cells from BMMSC which gave me that 'false positive' result because I did not characterize them earlier.