Islet amyloid polypeptide (IAPP), also known as amylin, is a 37 amino acid peptide hormone co-secreted with insulin from the pancreatic Β-cells. IAPP is processed from an 89-amino acid precursor pro-islet amyloid polypeptide (proIAPP) in pancreatic Β-cells that undergoes complex posttranslational modifications including protease cleavage, C-terminal amidation and formation of an intramolecular disulfide bridge to produce the mature IAPP.
The IAPP gene is mapped on the human chromosome at 12p12.1.
Specificity
Anti-IAPP(N-terminal) specifically recognizes human IAPP.
Immunogen
synthetic peptide corresponding to a sequence at the N-terminus of human pro-IAPP (GeneID 3375), conjugated to KLH.
Application
Anti-IAPP (N-terminal) antibody produced in rabbit may be used in immunohistochemistry.
Biochem/physiol Actions
Islet amyloid polypeptide (IAPP)/Amylin plays a role in glycemic regulation by slowing gastric emptying and promoting satiety, thereby preventing post-prandial spikes in blood glucose levels. The human IAPP (20-29) region that has been found to be essential to amyloid formation is thought to be a key factor in the initiation of amyloid aggregation. Amyloid deposits deriving from IAPP are commonly found in pancreatic islets of patients suffering of T2DM, or containing an insulinoma cancer. IAPP, like β-amyloid peptide associated with Alzheimer′s disease, can induce apoptosis in insulin producing β-cells, an effect that is relevant to the development of type 2 diabetes.
Physical form
Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.
Storage and Stability
For continuous use, store at 2-8 °C for up to one month. For extended storage, freeze in working aliquots. Repeated freezing and thawing, or storage in “frost-free” freezers,is not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use. Working dilutions should be discarded if not used within 12 hours.
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Clinica chimica acta; international journal of clinical chemistry, 412(9-10), 785-787 (2011-01-12)
Islet amyloid polypeptide (IAPP) gene variation has recently been implicated in type 2 diabetes mellitus (T2D). However, to date, no prospective epidemiological data are available. The association between 10 IAPP tag-single nucleotide polymorphisms (tSNPs) and incident T2D was investigated in
Amylin-mediated control of glycemia, energy balance, and cognition
Mietlicki-Baase EG, et al.
Physiology & Behavior, 162, 130-130 (2016)
Islet Amyloid Polypeptide: Structure, Function, and Pathophysiology
Akter R et al.
Journal of Diabetes Research (2016)
Amylin Uncovered: A Review on the Polypeptide Responsible for Type II Diabetes
Pillay K, et al.
BioMed Research International (2013)
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