نتایج جستجو برای: islet amyloid polypeptide

تعداد نتایج: 80109  

Journal: :Chemical communications 2013
Jeffrey R Brender Janarthanan Krishnamoorthy Grazia M L Messina Aniruddha Deb Subramanian Vivekanandan Carmelo La Rosa James E Penner-Hahn Ayyalusamy Ramamoorthy

The aggregation of human islet amyloid polypeptide (hIAPP) has been linked to beta-cell death in type II diabetes. Zinc present in secretory granules has been shown to affect this aggregation. A combination of EXAFS, NMR, and AFM experiments shows that the influence of zinc is most likely due to the stabilization of prefibrillar aggregates of hIAPP.

Journal: :Chemical communications 2013
Sunil Kumar Andrew D Miranker

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.

Journal: :Biochimica et Biophysica Acta (BBA) - Biomembranes 2012

Journal: :Chemical communications 2010
Jia Hu Ye-Ping Yu Wei Cui Chuan-Lin Fang Wei-Hui Wu Yu-Fen Zhao Yan-Mei Li

Human islet amyloid polypeptide (hIAPP) deposit is the hallmark of type 2 diabetes pathology. Here, we report that apo-cyclen, attached to a specific hIAPP recognition motif (NYGAIL), captured copper ions and became proteolytically active. This cyclen-NYGAIL-copper complex was able to interfere with hIAPP aggregation and cleave hIAPP. These activities rescued INS-1 cells from hIAPP induced cyto...

2015
Marisa A. Rubio Diana E. Schlamadinger Ellen M. White Andrew D. Miranker

Homomeric self-assembly of peptides into amyloid fibers is a feature of many diseases. A central role has been suggested for the lateral fiber surface affecting gains of toxic function. To investigate this, a protein scaffold that presents a discrete, parallel β-sheet surface for amyloid subdomains up to eight residues in length has been designed. Scaffolds that present the fiber surface of isl...

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