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Updated: Jun 27, 2026
11:56
Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids
Published on: May 4, 2018
AI-guided multi-objective optimization identifies a Jelleine I-derived gram-negative antimicrobial peptide lead
Jun Du1, Xinlu Ren2, Jianna Meng2
1School of Basic Medical Sciences, Lanzhou University, Donggang West Road, Lanzhou, 730000, China; Gansu Provincial Maternity and Child Care Hospital, North Road 143, Qilihe District, Lanzhou, 730000, China.
European Journal of Medicinal Chemistry
|June 25, 2026
Summary
Researchers used AI to design YB18, a novel antimicrobial peptide. This peptide shows strong antibacterial activity, low toxicity, and forms a hydrogel for wound infections, offering a promising alternative to antibiotics.
Area of Science:
- Biochemistry
- Computational Biology
- Materials Science
Background:
- Antimicrobial peptides (AMPs) offer alternatives to antibiotics but face challenges in optimizing potency, safety, and formulation.
- Jelleine-I (J1) serves as a scaffold for developing improved AMPs.
Purpose of the Study:
- To develop an AI-driven framework for multi-objective optimization of AMPs.
- To identify novel AMPs with enhanced antibacterial activity, mammalian-cell compatibility, and self-assembly properties.
Main Methods:
- Utilized multi-task learning and reinforcement learning for AMP design.
- Experimentally validated AI-designed analogues, focusing on YB18.
- Assessed antibacterial potency, hemolytic activity, cytocompatibility, and mechanism of action.
- Evaluated in vivo efficacy in an *E. coli*-infected wound model.
- Characterized self-assembly and hydrogel formation properties.
Main Results:
- Identified YB18 (RFRLILRL-NH2) as a Gram-negative-directed lead with improved potency (MIC 8-16 µM) over Jelleine-I.
- YB18 demonstrated low hemolytic activity and good cytocompatibility.
- Mechanism involves membrane permeability and potential disruption.
- Topical YB18 reduced bacterial burden in vivo.
- YB18 formed a viscoelastic hydrogel, further reducing bacterial counts and showing good tolerability in wound models.
Conclusions:
- YB18 is a promising peptide lead for localized anti-infective applications.
- AI-guided multi-objective optimization is an effective strategy for AMP discovery and development.
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