Identification of transmissible proteotoxic oligomer-like fibrils that expand conformational diversity of amyloid assemblies

PT Nguyen, X Zottig, M Sebastiao, AA Arnold… - Communications …, 2021 - nature.com
Protein misfolding and amyloid deposition are associated with numerous diseases. The
detailed characterization of the proteospecies mediating cell death remains elusive owing to …

Cell surface glycosaminoglycans exacerbate plasma membrane perturbation induced by the islet amyloid polypeptide

N Quittot, M Fortier, M Babych, PT Nguyen… - The FASEB …, 2021 - Wiley Online Library
Glycosaminoglycans (GAGs) are long and unbranched anionic heteropolysaccharides that
have been associated with virtually all amyloid deposits. Soluble sulfated GAGs are known …

TPE conjugated islet amyloid polypeptide probe for detection of peptide oligomers

HC Tsai, CH Huang, LH Tu - Biophysical Chemistry, 2024 - Elsevier
Islet amyloid polypeptide (IAPP), also known as amylin, is a polypeptide hormone co-
secreted with insulin by pancreatic β-cells. In general, IAPP is soluble and lacks a defined …

Biarsenical fluorescent probes for multifunctional site-specific modification of proteins applicable in life sciences: an overview and future outlook

A Pomorski, A Krężel - Metallomics, 2020 - pubs.rsc.org
Fluorescent modification of proteins of interest (POI) in living cells is desired to study their
behaviour and functions in their natural environment. In a perfect setting it should be easy to …

Contribution of the 12–17 hydrophobic region of islet amyloid polypeptide in self-assembly and cytotoxicity

M Fortier, M Côté-Cyr, V Nguyen, M Babych… - Frontiers in Molecular …, 2022 - frontiersin.org
The islet amyloid polypeptide (IAPP) is a 37-residue aggregation-prone peptide hormone
whose deposition as insoluble fibrils in the islets of Langerhans is associated with type II …

Glycosaminoglycans induce amyloid self-assembly of a peptide hormone by concerted secondary and quaternary conformational transitions

M Sebastiao, N Quittot, I Marcotte, S Bourgault - Biochemistry, 2019 - ACS Publications
Amyloids are polypeptide supramolecular assemblies that have been historically associated
with numerous pathologies. Nonetheless, recent studies have identified many amyloid …

DNA nanostructures prevent the formation of and convert toxic amyloid proteospecies into cytocompatible and biodegradable spherical complexes

N Kihal, PT Nguyen, A Nazemi, AA Greschner… - …, 2024 - Wiley Online Library
The deposition of insoluble proteinaceous aggregates in the form of amyloid fibrils within the
extracellular space of tissues is associated with numerous diseases. The development of …

A fluorogenic molecule for probing islet amyloid using flavonoid as a scaffold design

WL Chen, ST Ma, YW Chen, YC Chao, AC Chan… - Biochemistry, 2020 - ACS Publications
Aggregation of polypeptides and proteins is commonly associated with human and other
vertebrate diseases. For example, amyloid plaques consisting of amyloid-β proteins are …

Amyloidogenicity and cytotoxicity of des-Lys-1 human amylin provides insight into amylin self-assembly and highlights the difficulties of defining amyloidogenicity

KH Lee, A Zhyvoloup, D Raleigh - Protein Engineering, Design …, 2019 - academic.oup.com
The polypeptide amylin is responsible for islet amyloid in type 2 diabetes, a process which
contributes to β-cell death in the disease. The role of the N-terminal region of amylin in …

Directed evolution of conformation‐specific antibodies for sensitive detection of polypeptide aggregates in therapeutic drug formulations

W Lou, SD Stimple, AA Desai… - Biotechnology and …, 2021 - Wiley Online Library
Biologics such as peptides and proteins possess a number of attractive attributes that make
them particularly valuable as therapeutics, including their high activity, high specificity, and …