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Sulfonated molecules that bind a partially structured species of beta2-microglobulin also influence refolding and

Chiara Carazzone1, Raffaella Colombo, Milena Quaglia

  • 1Department of Pharmaceutical Chemistry, School of Pharmacy, University of Pavia, Pavia, Italy.

Electrophoresis
|April 4, 2008
PubMed

Insights

Researchers investigated sulfonated molecules to stabilize human beta2-microglobulin (beta2-m), aiming to prevent dialysis-related amyloidosis. Findings suggest these molecules can influence beta2-m folding and inhibit amyloid formation.

Area of Science:

  • Biochemistry
  • Protein Misfolding Diseases
  • Drug Discovery

Background:

  • Dialysis-related amyloidosis is a severe complication of long-term hemodialysis, caused by the amyloidogenic protein beta2-microglobulin (beta2-m).
  • Therapeutic strategies focus on stabilizing beta2-m to prevent protein misfolding and amyloid fibril formation.

Purpose of the Study:

  • To investigate the effect of previously selected sulfonated molecules on the conformational equilibrium of human beta2-m.
  • To assess the potential of these molecules as therapeutic agents for dialysis-related amyloidosis by evaluating their impact on beta2-m folding and in vitro fibrillogenesis.

Main Methods:

  • Capillary electrophoresis (CE) was employed for affinity and refolding experiments to study beta2-m conformational changes.
  • In vitro fibrillogenesis assays were conducted to evaluate the anti-amyloidogenic properties of the sulfonated molecules.

Main Results:

  • The selected sulfonated molecules demonstrated an influence on the equilibrium between native beta2-m and its misfolded conformers.
  • These molecules showed a correlation between their binding/refolding effects and their ability to inhibit in vitro beta2-m fibril formation.

Conclusions:

  • Sulfonated molecules show promise in stabilizing beta2-m and inhibiting amyloid formation.
  • These findings support the development of small molecule stabilizers as a therapeutic approach for dialysis-related amyloidosis.

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