nPOD. Archived Projects

Pancreatic expression of chemokines in human type 1 diabetes

Human chemokine superfamily of molecules mediate the recruitment of leukocytes to sites of inflammation. Many chemokines and chemokine receptors have emerged as key contributors and regulators of autoimmune disorders, including Type 1 Diabetes and may serve as potential surrogate biomarkers of inflammation or possible drug targets. More than one-half of all human and rodent chemokines have been implicated in the pathogenesis or complications of Type 1 diabetes. Most of the previously published work however is limited to the genetic association studies and chemokine and their receptor analyses in the peripheral blood. To delineate the complete spectrum of chemokine mRNA species transcribed by human islets in response to inflammatory stimuli, we used an established in vitro culture system in which islets purified from healthy organ donors were cultured in the absence versus the presence of IL-1β, TNFα, and IFNγ and subsequently subjected them to gene expression microarray analysis. Based on our microarray data and in collaboration with Homann laboratory, we study the expression and localization of chemokines in pancreatic tissue sections obtained through the Network for Pancreatic Organ Donors with Diabetes (nPOD) and included healthy control subjects.

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