What question did this study set out to answer?

To optimize the balance between cationicity and hydrophobicity in the frog-derived peptide Dermaseptin-A4 to enhance antibacterial selectivity while minimizing mammalian toxicity.

August 16, 2026AntibioticsOpen Access

Balancing Cationicity and Hydrophobicity in Dermaseptin-A4 Generates a Selective Antimicrobial Peptide with Enhanced Therapeutic Potential

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Authors

WLWeichang LiQueen's University Belfast WWWudi WangQueen's University Belfast BCBoyu ChenQueen's University Belfast

Discussion

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Implication

In vitro study demonstrates that optimizing cationicity and hydrophobicity in dermaseptin-A4 enhances antibacterial selectivity and reduces toxicity, highlighting its therapeutic potential.

Key Points

To optimize the balance between cationicity and hydrophobicity in the frog-derived peptide Dermaseptin-A4 to enhance antibacterial selectivity while minimizing mammalian toxicity.
Rationally engineered three Dermaseptin-A4 analogues by modulating physicochemical properties of charge and hydrophobicity.
Evaluated structural conformation in membrane-mimicking conditions, antibacterial potency against Gram-positive and Gram-negative bacteria, resistance development propensity, and mammalian cytotoxicity.
Analogue A4-3 achieved a selectivity index of up to 34.5, exhibiting potent broad-spectrum antibacterial activity alongside reduced haemolytic and cytotoxic effects compared to the parent peptide.
A4-3 maintained an α-helical structure in membrane environments, rapidly eradicated bacteria via membrane disruption, and displayed low propensity for resistance emergence under prolonged exposure.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a817a21f2fb91fc834add29 https://doi.org/10.3390/antibiotics15080784

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August 16, 2026AntibioticsOpen Access

Balancing Cationicity and Hydrophobicity in Dermaseptin-A4 Generates a Selective Antimicrobial Peptide with Enhanced Therapeutic Potential

View Full Paper

Ask AI

Bookmark

Authors

WLWeichang LiQueen's University Belfast WWWudi WangQueen's University Belfast BCBoyu ChenQueen's University Belfast

Discussion

Member takes

Implication

In vitro study demonstrates that optimizing cationicity and hydrophobicity in dermaseptin-A4 enhances antibacterial selectivity and reduces toxicity, highlighting its therapeutic potential.

Key Points

To optimize the balance between cationicity and hydrophobicity in the frog-derived peptide Dermaseptin-A4 to enhance antibacterial selectivity while minimizing mammalian toxicity.
Rationally engineered three Dermaseptin-A4 analogues by modulating physicochemical properties of charge and hydrophobicity.
Evaluated structural conformation in membrane-mimicking conditions, antibacterial potency against Gram-positive and Gram-negative bacteria, resistance development propensity, and mammalian cytotoxicity.
Analogue A4-3 achieved a selectivity index of up to 34.5, exhibiting potent broad-spectrum antibacterial activity alongside reduced haemolytic and cytotoxic effects compared to the parent peptide.
A4-3 maintained an α-helical structure in membrane environments, rapidly eradicated bacteria via membrane disruption, and displayed low propensity for resistance emergence under prolonged exposure.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a817a21f2fb91fc834add29 https://doi.org/10.3390/antibiotics15080784

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