Biochemical mechanisms of aggregation in TGFBI-linked corneal dystrophies.

Nadia Sukusa Nielsen, Ebbe Toftgaard Poulsen, Marie V. Lukassen, Connie Chao Shern, Emilie Hage Mogensen, Christian E. Weberskov, Larry Dedionisio, Leif Schauser, Tara C. B. Moore, Daniel E. Otzen, Jesper Hjortdal, Jan J Enghild

Research output: Contribution to journalReview article

2 Citations (Scopus)

Abstract

Transforming growth factor-β-induced protein (TGFBIp), an extracellular matrix protein, is the second most abundant protein in the corneal stroma. In this review, we summarize the current knowledge concerning the expression, molecular structure, binding partners, and functions of human TGFBIp. To date, 74 mutations in the transforming growth factor-β-induced gene (TGFBI) are associated with amyloid and amorphous protein deposition in TGFBI-linked corneal dystrophies. We discuss the current understanding of the biochemical mechanisms of TGFBI-linked corneal dystrophies and propose that mutations leading to granular corneal dystrophy (GCD) decrease the solubility of TGFBIp and affect the interactions between TGFBIp and components of the corneal stroma, whereas mutations associated with lattice corneal dystrophy (LCD) lead to a destabilization of the protein that disrupts proteolytic turnover, especially by the serine protease HtrA1. Future research should focus on TGFBIp function in the cornea, confirmation of the biochemical mechanisms in vivo, and the development of disease models. Future therapies for TGFBI-linked corneal dystrophies might include topical agents that regulate protein aggregation or gene therapy that targets the mutant allele by CRISPR/Cas9 technology.
Original languageEnglish
Article number100843
JournalProgress in Retinal and Eye Research
Early online date29 Jan 2020
DOIs
Publication statusE-pub ahead of print - 29 Jan 2020

Keywords

  • CRISPR/Cas9
  • Corneal dystrophies
  • Protein aggregation
  • TGFBI gene
  • TGFBIp
  • human cornea

Fingerprint Dive into the research topics of 'Biochemical mechanisms of aggregation in TGFBI-linked corneal dystrophies.'. Together they form a unique fingerprint.

  • Cite this

    Nielsen, N. S., Toftgaard Poulsen, E., Lukassen, M. V., Chao Shern, C., Hage Mogensen, E., Weberskov, C. E., ... Enghild, J. J. (2020). Biochemical mechanisms of aggregation in TGFBI-linked corneal dystrophies. Progress in Retinal and Eye Research, [100843]. https://doi.org/10.1016/j.preteyeres.2020.100843