Membrane interaction of 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 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...
متن کاملRecent Insight in Islet Amyloid Polypeptide Morphology, Structure, Membrane Interaction, and Toxicity in Type 2 Diabetes
1Laboratoire des Biomolécules, Sorbonne Universités, UPMC Université Paris 06, 4 place Jussieu, 75005 Paris, France 2Département de Chimie, Ecole Normale Supérieure-PSL Research University, 24 rue Lhomond, 75005 Paris, France 3UMR 7203, Laboratoire des Biomolécules, CNRS, 75005 Paris, France 4Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Av...
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 ...
متن کاملInhibitors can arrest the membrane activity of human islet amyloid polypeptide independently of amyloid formation.
Human islet amyloid polypeptide (hIAPP), co-secreted with insulin from pancreatic beta cells, misfolds to form amyloid deposits in non-insulin-dependent diabetes mellitus (NIDDM). Like many amyloidogenic proteins, hIAPP is membrane-active: this may be significant in the pathogenesis of NIDDM. Non-fibrillar hIAPP induces electrical and physical breakdown in planar lipid bilayers, and IAPP insert...
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ژورنال
عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Biomembranes
سال: 2007
ISSN: 0005-2736
DOI: 10.1016/j.bbamem.2007.01.022