However, investigators report studies of MSC using different methods of isolation and expansion, and different approaches to characterizing the cells. The considerable therapeutic potential of human multipotent mesenchymal stromal cells (MSC) has generated markedly increasing interest in a wide variety of biomedical disciplines. Further, because FAK is an HSP90α/β client protein, these results suggest the utility of HSP90α/β inhibition as a target for adjuvant therapy for myelodysplasia. These results suggest that signalling via FA proteins could be implicated in HPC-MSC interactions. Increased expression of paxillin, pFAK, and HSP90α/β and enhanced nuclear co-localisation of these proteins correlated with a consistent proliferative advantage in MSCs from patients with refractory anaemia with excess blasts (RAEB) and negatively impacted clonogenicity of HPCs. Immunofluorescence microscopy allowed us to identify qualitative and quantitative differences, and subcellular localisation analysis revealed that in pathological MSCs, paxillin, pFAK, and HSP90α/β formed nuclear molecular complexes.
To define the role of FA proteins in the haematopoietic microenvironment of myelodysplastic syndromes (MDS), CD73-positive mesenchymal stromal cells (MSCs) were immunostained for paxillin, pFAK, and HSP90α/β and p130CAS, and analysed for reactivity, intensity and cellular localisation. In cancer biology, focal adhesion (FA) proteins are involved in survival signal transduction in a wide variety of human tumours. Tissue and Cell Culture Dissociation Reagentsĭirect cell-cell contact between haematopoietic progenitor cells (HPCs) and their cellular microenvironment is essential to maintain 'stemness'.Work at STEMCELL View Current Opportunities >
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