Amyloid‐like Aggregation Propensities of Metabolites‐ Homogentisic Acid, N‐Acetyl Aspartic Acid and Isovaleric Acid

The transformation of metabolites into amyloidogenic aggregates represent an intriguing dimension in the pathophysiology of metabolic disorders, including alkaptonuria, canavan disease, and isovaleric acidemia. Central to this phenomenon are the metabolites homogentisic acid (HA), N‐acetyl aspartic acid (NAA), and isovaleric acid (IVA), which we found, weave an intricate network of self‐assembled structures. Leveraging an array of microscopy techniques, we traced the morphological behavior of these assemblies that exhibit concentration and time‐dependent morphological transitions from isolated globules to clustered aggregates. MD simulation studies suggest significant role of hydrogen bonding interactions in the aggregation process. While displaying strong amyloidogenic propensity in solution, these aged aggregates were significantly cytotoxic to mouse neural N2a cell lines. In vivo effect in Caenorhabditis elegans (C. elegans) nematode further validated cytotoxicity of aggregates. Our findings provide fresh insights to amyloidogenic nature of HA, NAA, and IVA aggregates and their possible role in associated metabolic disorders such as alkaptonuria, canavan disease and isovaleric acidemia.

• Publication year

  2024

• Venue

  ChemBioChem

• Publication date

  2024-09-23

• Fields of study

  Medicine, Chemistry

• Identifiers
  DOI 10.1002/cbic.202400109PMID 39312502
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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