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Related Experiment Video

Updated: May 6, 2026

Particle Agglutination Method for Poliovirus Identification

Particle Agglutination Method for Poliovirus Identification

Published on: April 20, 2011

Inactivated Enterovirus 71 Particle Aggregation Stability: Dynamic Light Scattering Analysis and Stabilizer

Anna Yang^1,2,3,4, Dongsheng Yang^1,2,3,4, Deqin Pang^1,2,3,4

¹Wuhan Institute of Biological Products Co., Ltd., No. 1 Huangjin Industrial Park Road, Wuhan 430207, China.

|December 24, 2025

Summary

This summary is machine-generated.

Dynamic light scattering (DLS) effectively monitors enterovirus 71 (EV71) aggregation. Specific pH, buffers, and stabilizers enhance vaccine stability against environmental stresses.

Keywords:

dynamic light scattering formulation development inactivated coxsackievirus 71 vaccine particle size protein aggregation

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Area of Science:

Virology
Vaccine Development
Biophysical Characterization

Background:

Inactivated enterovirus 71 (EV71) vaccines are crucial for preventing severe hand, foot, and mouth disease.
Vaccine quality and stability are significantly influenced by viral particle aggregation.

Purpose of the Study:

To utilize dynamic light scattering (DLS) for monitoring EV71 particle size and aggregation.
To comprehensively assess the impact of various environmental stresses on EV71 particle aggregation.
To identify effective stabilizing agents for EV71 vaccine formulations.

Main Methods:

Validation of the dynamic light scattering (DLS) technique for viral particle analysis.
Assessment of EV71 particle size changes under varying pH, ionic strength, temperature, and mechanical stress conditions.
Systematic evaluation of buffer salts and stabilizers for their ability to inhibit stress-induced aggregation.

Main Results:

DLS demonstrated robust performance in characterizing EV71 particle aggregation.
EV71 particles remained stable within a pH range of 7.0-7.5.
Elevated temperatures (47 °C) and magnetic stirring induced significant viral aggregation.
Phosphate and citrate buffers showed strong inhibition against heat and stirring-induced aggregation, respectively.
M199 and Tween 80 effectively mitigated heat and shear stress-induced aggregation, respectively.

Conclusions:

Dynamic light scattering (DLS) is a reliable method for monitoring viral aggregation in vaccine development.
Tailored stabilization strategies involving specific pH conditions, buffers (phosphate, citrate), and agents (M199, Tween 80) are key for enhancing EV71 vaccine quality and stability.
These findings provide critical insights for optimizing EV71 vaccine formulation and ensuring robust quality control.