Other Publications (1)
Articles by Lina Sakhneny in JoVE
Isolierung und Analyse von Zellen des Pankreas Mesenchyme durch Durchflusszytometrie Alona Epshtein1, Lina Sakhneny1, Limor Landsman1 1Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University Hier beschreiben wir ein Verfahren zur Isolierung von Zellen in der Bauchspeicheldrüse Mikroumgebung aus embryonalen, neonatalen und adulten Mausgewebe, auf die Isolierung von mesenchymalen Zellen konzentriert. Dieses Verfahren ermöglicht Profilieren von Zell Genexpression und Proteinabsonderung, um die extrinsische Signale zu erläutern, die Pankreas-Entwicklung, Funktion und tumorigenesis regulieren.
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.