A pair of peptides inhibits seeding of the hormone transporter transthyretin into amyloid fibrils
Open accessAbstract
The tetrameric protein transthyretin is a transporter of retinol and thyroxine in blood, cerebrospinal fluid, and the eye, and is secreted by the liver, choroid plexus, and retinal epithelium, respectively. Systemic amyloid deposition of aggregated transthyretin causes hereditary and sporadic amyloidoses. A common treatment of patients with hereditary transthyretin amyloidosis is liver transplantation. However, this procedure, which replaces the patient's variant transthyretin with the WT protein, can fail to stop subsequent cardiac deposition, ultimately requiring heart transplantation. We recently showed that preformed amyloid fibrils present in the heart at the time of surgery can template or seed further amyloid aggregation of native transthyretin. Here we assess possible interventions to halt this seeding, using biochemical and EM assays. We found that chemical or mutational stabilization of the transthyretin tetramer does not hinder amyloid seeding. In contrast, binding of the peptide inhibitor TabFH2 to ex vivo fibrils efficiently inhibits amyloid seeding by impeding self-association of the amyloid-driving strands F and H in a tissue-independent manner. Our findings point to inhibition of amyloid seeding by peptide inhibitors as a potential therapeutic approach.
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Short peptides with altered amino acid sequences that target cross-sectional interfaces have been successfully employed in capping of various amyloid fibrils and inhibition of seeding.
“Notably, short peptides with altered amino acid sequences that target the cross-sectional interfaces of aggregation-prone regions have been successfully employed in the capping of various amyloid fibrils and the inhibition of seeding (63, 64, 65, 66).”
From MAP2 caps tau fibrils and inhibits aggregation (2023) · cites this paper as [64]
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- Authors
- Saelices, L., Nguyen, B. A., Chung, K., Wang, Y., Ortega, A., Lee, J. H., Coelho, T., Bijzet, J., Benson, M. D., & Eisenberg, D. S.
- Affiliations
- Howard Hughes Medical Institute (US)
- Hospital de Santo António (PT)
- University Medical Center Groningen (NL)
- Indiana University Indianapolis (US)
- Corresponding author
- Eisenberg, David S.
- ORCID
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 2019-04
- Volume
- 294
- Issue
- 15
- Pages
- 6130-6141
- ISSN
- 0021-9258 (ISSN-L)
- PMC
- PMC6463714
- OpenAlex
- W2911892577
- Cited by
- 43
- References
- 36
- Citations by year
- 2026: 1 · 2025: 9 · 2024: 9 · 2023: 7 · 2022: 3 · 2021: 6 · 2020: 5 · 2019: 3
- FWCI
- 1.41
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Biological Chemistry (publishedVersion, cc-by)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- University of Groningen research database (University of Groningen / Centre for Information Technology) (publishedVersion, cc-by)
- eScholarship (California Digital Library) (submittedVersion, cc-by)
- Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
- IUScholarWorks (Indiana University) (submittedVersion)
- Purdue University Indianapolis (Indiana University) (submittedVersion)
- University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion, cc-by)
- PMC
- Funders
- HHS | National Institutes of Health (AG048120)
- Amyloidosis Foundation (20160759, 20170827)
- Howard Hughes Medical Institute
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Amyloidosis: Diagnosis, Treatment, Outcomes
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
- Keywords
- prealbumin, amyloid fibrils, amyloid seeding, hereditary transthyretin amyloidosis, peptide inhibitors, tetramer stabilization, amyloid fibril formation, amyloidosis treatment
- MeSH terms
- Aged, Aged, 80 and over, Amyloid, Female, Humans, Male, Middle Aged, Peptides, Prealbumin, Amyloid Neuropathies, Familial, Protein Aggregates
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