A Membrane-Bound Antiparallel Dimer of Rat Islet Amyloid Polypeptide
نویسندگان
چکیده
منابع مشابه
Islet amyloid polypeptide toxicity and membrane interactions.
Islet amyloid polypeptide (IAPP) is responsible for amyloid formation in type 2 diabetes and contributes to the failure of islet cell transplants, however the mechanisms of IAPP-induced cytotoxicity are not known. Interactions with model anionic membranes are known to catalyze IAPP amyloid formation in vitro. Human IAPP damages anionic membranes, promoting vesicle leakage, but the features that...
متن کاملA foldamer approach to targeting membrane bound helical states of islet amyloid polypeptide.
A small molecule, protein mimetic based approach is shown to specifically inhibit lipid catalysed self-assembly of islet amyloid polypeptide (IAPP). The lipid-bound oligomerization of this peptide is implicated in cellular dysfunction of insulin secreting β-cells in type II diabetes.
متن کاملIslet Amyloid Polypeptide is not a Target Antigen for CD8+ T-Cells in Type 2 Diabetes
Background: Type 2 diabetes (T2D) is a chronic metabolic disorder in which beta-cells are destroyed. The islet amyloid polypeptide (IAPP) produced by beta-cells has been reported to influence beta-cell destruction. Objective: To evaluate if IAPP can act as an autoantigen and therefore, to see if CD8 + T-cells specific for this protein might be present in T2D patients. Methods: Peripheral blood ...
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The conversion of soluble protein into beta-sheet-rich amyloid fibers is the hallmark of a number of serious diseases. Precursors for many of these systems (e.g., Abeta from Alzheimer's disease) reside in close association with a biological membrane. Membrane bilayers are reported to accelerate the rate of amyloid assembly. Furthermore, membrane permeabilization by amyloidogenic peptides can le...
متن کاملIslet amyloid polypeptide, islet amyloid, and diabetes mellitus.
Islet amyloid polypeptide (IAPP, or amylin) is one of the major secretory products of β-cells of the pancreatic islets of Langerhans. It is a regulatory peptide with putative function both locally in the islets, where it inhibits insulin and glucagon secretion, and at distant targets. It has binding sites in the brain, possibly contributing also to satiety regulation and inhibits gastric emptyi...
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ژورنال
عنوان ژورنال: Angewandte Chemie International Edition
سال: 2011
ISSN: 1433-7851
DOI: 10.1002/anie.201102887