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Nano Lett. 2018 Sep 12;18(9):5797-5804. doi: 10.1021/acs.nanolett.8b02446. Epub 2018 Aug 13.

In Vivo Mitigation of Amyloidogenesis through Functional-Pathogenic Double-Protein Coronae.

Author information

1
ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville , Victoria 3052 , Australia.
2
Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering , Tongji University , 1239 Siping Road , Shanghai 200092 , China.
3
Department of Health Sciences & Technology , ETH Zurich , Schmelzbergstrasse 9 , LFO, E23, 8092 Zurich , Switzerland.

Abstract

Amyloid diseases are global epidemics with no cure available. Herein, we report a first demonstration of in vivo mitigation of amyloidogenesis using biomimetic nanotechnology. Specifically, the amyloid fragments (ba) of β-lactoglobulin, a whey protein, were deposited onto the surfaces of carbon nanotubes (baCNT), which subsequently sequestered human islet amyloid polypeptide (IAPP) through functional-pathogenic double-protein coronae. Conformational changes at the ba-IAPP interface were studied by Fourier transform infrared, circular dichroism, and X-ray scattering spectroscopies. baCNT eliminated the toxic IAPP species from zebrafish embryos, as evidenced by the assays of embryonic development, cell morphology, hatching, and survival as well as suppression of oxidative stress. In addition to IAPP, baCNT also displayed high potency against the toxicity of amyloid-β, thereby demonstrating the broad applicability of this biomimetic nanotechnology and the use of an embryonic zebrafish model for the high-throughput screening of a range of amyloidogenesis and their inhibitors in vivo.

KEYWORDS:

Amyloidogenesis; IAPP; amyloid diseases; amyloid β; carbon nanotubes; zebrafish

PMID:
30088935
DOI:
10.1021/acs.nanolett.8b02446
[Indexed for MEDLINE]

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