What question did this study set out to answer?

To develop a dual-mechanism platform combining mild acidity with low concentrations of non-ionic detergent to rapidly clear enveloped viruses without causing acid-induced product instability.

August 19, 2026Biotechnology Progress

Synergistic viral inactivation platform: Rapid enveloped virus inactivation at mildly acidic pH using low non‐ionic detergent in Protein A eluates

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Authors

JZJune X. ZouUC Davis Comprehensive Cancer Center JLJanice H. LeeBayer (United States)SLShengjiang “Shawn” LiuBayer (United States)

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Implication

Laboratory study demonstrates rapid enveloped virus clearance using mild pH and non-ionic detergents in Protein A eluates, suggesting a safer purification route for acid-sensitive biotherapeutics.

Key Points

To develop a dual-mechanism platform combining mild acidity with low concentrations of non-ionic detergent to rapidly clear enveloped viruses without causing acid-induced product instability.
Spiked xenotropic murine leukemia virus (X-MuLV) into Protein A eluates across a range of pH conditions (pH 3.91 to 4.56).
Assessed viral clearance kinetics using low concentrations of non-ionic detergents, including Mega-10, Tween 80, and Tween 20, compared with low-pH conditions alone.
Combining 0.10% Mega-10 at pH 3.91 reduced viral infectivity below the detection limit in 2.5 minutes (log10 reduction factor [LRF] ≥ 5.40), compared to substantially lower reduction with pH or detergent alone.
At pH 4.05, 0.15% Mega-10 achieved an LRF ≥ 5.81 within 10 minutes, and Tween 80 or Tween 20 at pH ~3.97 shortened clearance time from 120 minutes to 5 minutes.
Demonstrated operational feasibility at pH 4.56 through paired adjustments of pH and detergent concentration.

Cite This Study

Zou et al. (2026) studied this question.

synapsesocial.com/papers/6a85633c03308d306e2d648f https://doi.org/10.1002/btpr.88549

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Implication

Laboratory study demonstrates rapid enveloped virus clearance using mild pH and non-ionic detergents in Protein A eluates, suggesting a safer purification route for acid-sensitive biotherapeutics.

Synergistic viral inactivation platform: Rapid enveloped virus inactivation at mildly acidic pH using low non‐ionic detergent in Protein A eluates

Discussion

Member takes

Implication

Key Points

Cite This Study

Synergistic viral inactivation platform: Rapid enveloped virus inactivation at mildly acidic pH using low non‐ionic detergent in Protein A eluates

Discussion

Member takes

Implication

Key Points

Cite This Study

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