All-in-one stability indicating polysorbate 20 degradation root-cause analytics via UPLC-QDa

Area of Science:

• Biopharmaceutical formulation development
• Analytical chemistry

Background:

• Polysorbates (PS) are crucial surfactants for stabilizing biopharmaceuticals but are prone to degradation.
• PS degradation, caused by hydrolysis or oxidation, can lead to reduced efficacy and formation of problematic free fatty acids (FFAs).
• Current analytical methods for PS degradation are often time-consuming and require extensive sample preparation.

Purpose of the Study:

• To develop a streamlined, UPLC-QDa-based analytical approach for polysorbate 20 (PS20) degradation root-cause analysis.
• To integrate the analysis of PS20 esters, free fatty acids (FFAs), and novel oxidation markers into a single workflow.
• To enable early detection of oxidative degradation processes in biopharmaceutical formulations.

Main Methods:

• Development of a novel method for PS20 specific oxidation markers, combined with established assays for PS20 esters and FFAs.
• Utilized a single sample preparation protocol and detector (UPLC-QDa) for all three analyses.
• Validated the analytical setup using stressed PS20 samples simulating various degradation pathways (hydrolysis, oxidation, autoxidation).

Main Results:

• The integrated analytical triad effectively monitors PS20 esters, FFAs, and specific oxidation markers.
• The novel oxidation marker method allows for quantification via external calibration, detecting degradation before significant PS20 ester loss.
• The method successfully identified degradation root-causes in various stress conditions, including hydrolysis and oxidation.

Conclusions:

• This novel, integrated analytical approach offers an efficient, all-in-one solution for PS20 degradation analysis in biopharmaceutical development.
• It reduces sample volume, time, and effort compared to traditional multi-method approaches.
• The ability to detect oxidative degradation early aids in establishing effective mitigation strategies and ensures formulation stability.