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Nucleic acid aptamers stabilize proteins against different types of stress conditions

Hardik C Jetani1, Ankan Kumar Bhadra, Nishant Kumar Jain

  • 1Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Punjab, 160 062, India.

Journal of Pharmaceutical Sciences
|November 22, 2013
PubMed

Insights

Nucleic acid aptamers stabilize tetanus toxoid against multiple stresses like heat and freezing. This protein-centric approach offers a versatile solution for vaccine formulation, potentially reducing costs.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Vaccine Development

Background:

  • Traditional protein stabilizers (osmolytes) are often specific to single stress conditions.
  • Developing stabilizers effective against multiple stresses is crucial for robust vaccine formulation.

Purpose of the Study:

  • To investigate the efficacy of nucleic acid aptamers in stabilizing proteins against diverse stress conditions.
  • To evaluate the protein-centric stabilization approach for vaccine applications.

Main Methods:

  • Tetanus toxoid was subjected to thermal, freeze-thawing, and agitation stresses.
  • Nucleic acid aptamers specific to tetanus toxoid were utilized.
  • Protein stability and antigenicity were assessed under various stress conditions.

Main Results:

  • Specific RNA aptamers successfully stabilized alumina-adsorbed tetanus toxoid against thermal, agitation, and freeze-thawing stress.
  • Aptamer-protein binding affinity remained stable at elevated temperatures, indicating sustained protection.
  • Aptamers prevented protein unfolding and aggregation under stress.

Conclusions:

  • Nucleic acid aptamers provide a versatile protein-centric stabilization strategy effective against multiple stresses.
  • This approach enhances protein stability in vaccine formulations and may reduce manufacturing costs.
Keywords:
adjuvantaluminaaptamerformulationoligonucleotidesproteinsstabilitystresstetanus toxoid

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