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Related Concept Videos

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Amyloid Fibrils

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Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
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Updated: Sep 16, 2025

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Exploring Protein Aggregation in Biological Products: From Mechanistic Understanding to Practical Solutions.

Satish Rojekar1, Amol D Gholap2, Krishna Jadhav3

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Understanding protein aggregation is crucial for developing stable therapeutic proteins. This study details aggregation pathways and strategies to control them, improving drug safety and efficacy.

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Area of Science:

  • Biochemistry and Molecular Biology
  • Biotechnology
  • Pharmaceutical Sciences

Background:

  • Proteins are essential for cellular functions, but environmental changes can cause conformational instability and aggregation.
  • Protein aggregation, involving various protein states, is a complex process impacting therapeutic efficacy and patient safety.
  • Aggregated therapeutic proteins can elicit adverse immune responses, necessitating control over protein stability and function.

Purpose of the Study:

  • To elucidate the complex mechanisms and pathways of protein aggregation.
  • To highlight the importance of understanding protein aggregation for therapeutic protein development.
  • To outline strategies for controlling and monitoring protein aggregation.

Main Methods:

  • Characterization of protein aggregation pathways, including lag, exponential, and saturation phases.
  • Investigation of the role of protein-protein interactions (PPIs) in protein stability, aggregation rate, and solubility.
  • Application of advanced computational and biophysical methods for characterizing therapeutic protein aggregation.

Main Results:

  • Detailed understanding of protein aggregation kinetics, from initial lag phase to monomer depletion.
  • Identified protein-protein interactions as key factors influencing aggregation.
  • Demonstrated the utility of computational and biophysical techniques in characterizing aggregation.

Conclusions:

  • A comprehensive understanding of protein aggregation mechanisms, characterization, and control strategies is vital.
  • Effective strategies can mitigate issues related to protein aggregation, including immunogenicity and reduced product efficacy.
  • Controlling protein aggregation enhances therapeutic protein stability, targeting, and reduces production costs.