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2000
Volume 32, Issue 2
  • ISSN: 0929-8665
  • E-ISSN: 1875-5305

Abstract

Background

The transformation of proteins from their native conformation into highly ordered fibrillar structures due to their misfolding and aggregation under particular conditions are described as beta-sheet enriched amyloid fibrils. The accumulation of these fibrils in different body parts is the major cause of several neurological and non-neurological conditions (proteinopathies).

Objectives

To prevent these proteinopathies, inhibition of protein aggregation is considered a promising strategy. Therefore, in this study, we synthesized montmorillonite (MMT) based poly-orthophenylenediamine (PoPD) nanocomposites (NCs) and characterized their size and morphology due to their remarkable biological properties. Further, the effect of these nanocomposites on inhibition of fibril formation was assessed.

Methods

These nanocomposites were evaluated for their anti-amyloidogenic potential on two model proteins of amyloidopathies, human lysozyme and human serum albumin (HL & HSA), by using several biophysical methods, such as Thioflavin T (ThT) and 1-anilino-8-naphthalene sulfonate (ANS) fluorescence, congo red dye binding assay (CR). Secondary structural content was evaluated by Circular dichroism (CD) spectroscopy.

Results

Results demonstrated that synthesized nanocomposites significantly inhibited fibril formation in dose-dependent manner that corresponds to their ability to arrest fibrillation. It is suggested that they may adsorb proteins to protect them against aggregation when they are subjected to aggregating conditions.

Conclusion

This study offers an opportunity to understand the mechanism of inhibition of fibril formation by nanocomposites, showing that they inhibit amyloid formation and amyloid diseases. Thus, the study concludes that these nanocomposites are promising candidates as therapeutic molecules for proteinopathies and are envisaged to enrich the area of personalized medicine, augmenting the human healthcare system.

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2025-09-01

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Clay-Polymer Nanocomposites Mediated Inhibition of Protein Aggregation: Possible Role in the Prevention of Proteinopathies
PPL 32, 139 (2025); https://doi.org/10.2174/0109298665274059231002071951
/content/journals/ppl/10.2174/0109298665274059231002071951
/content/journals/ppl/10.2174/0109298665274059231002071951
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  • Article Type:     Research Article
Keyword(s): Human serum albumin, Thioflavin T, Circular dichroism, montmorillonite; nanocomposites; proteinopathies

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