Other Publications (1)
Articles by Lina Sakhneny in JoVE
Isolering og analysere celler i bugspytkirtlen mesenchym ved flowcytometri Alona Epshtein1, Lina Sakhneny1, Limor Landsman1 1Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University Her beskriver vi en fremgangsmåde til isolering af celler i bugspytkirtlen mikromiljø fra embryonale, neonatale og voksne mus væv, der fokuserer på isolering af mesenchymale celler. Denne fremgangsmåde tillader profilering af celle genekspression og proteinsekretion for at belyse de ydre signaler, som regulerer bugspytkirtel udvikling, funktion og tumorigenese.
Other articles by Lina Sakhneny on PubMed
Islet Pericytes Are Required for β-Cell Maturity Diabetes. Oct, 2016 | Pubmed ID: 27388217 β-Cells rely on the islet microenvironment for their functionality and mass. Pericytes, along with endothelial cells, make up the dense islet capillary network. However, although the role of endothelial cells in supporting β-cell homeostasis has been vastly investigated, the role of pericytes remains largely unknown. Here, we focus on contribution of pericytes to β-cell function. To this end, we used a transgenic mouse system that allows diphtheria toxin-based depletion of pericytes. Our results indicate that islets depleted of their pericytes have reduced insulin content and expression. Additionally, isolated islets displayed impaired glucose-stimulated insulin secretion, accompanied by a reduced expression of genes associated with β-cell function. Importantly, reduced levels of the transcription factors MafA and Pdx1 point to β-cell dedifferentiation in the absence of pericytes. Ex vivo depletion of pericytes in isolated islets resulted in a similar impairment of gene expression, implicating their direct, blood flow-independent role in maintaining β-cell maturity. To conclude, our findings suggest that pericytes are pivotal components of the islet niche, which are required for β-cell maturity and functionality. Abnormalities of islet pericytes, as implicated in type 2 diabetes, may therefore contribute to β-cell dysfunction and disease progression.