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Open research questions in Antimicrobial Peptides and Activities

498 gap statements mined from Antimicrobial Peptides and Activities papers in our 7.9M-paper local library, which holds 1,964 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The lack of understanding of the mechanistic insights of β-defensin 130 on ETEC-K88 infection. The need to investigate the interaction relationship between gut microbiota and metabolites. The limited knowledge on the effect of β-defensin 130 on intestinal metabolic pathways.

    β-defensin 130 Counteracts ETEC-K88 Infection in Mice: Mechanistic Insights from Gut Microbiome and LC-MS-Based Metabolomic Correlation Analysis · 2026 · DOI

  • The paper highlights the need to eliminate the inherent disadvantages of antimicrobial peptides, including insufficient activity.

    Antimicrobial Peptides, Their Production, and Potential in the Fight Against Antibiotic-Resistant Pathogens · 2025 · DOI

  • The paper identifies the need for novel antimicrobial agents to address the resistance crisis. There is a gap in the development of efficient methods for discovering and testing antimicrobial peptides. The study highlights the importance of understanding the mechanisms of action of antimicrobial peptides.

    Machine Learning-Based Discovery of Antimicrobial Peptides and Their Antibacterial Activity Against Staphylococcus aureus · 2025 · DOI

  • The need for detailed mechanism studies of marine peptides. The need for large-scale production and clinical evaluations of marine peptides. The need to investigate the potential synergistic effects of marine peptide combinations with existing medicines.

    Multifaceted Marine Peptides and Their Therapeutic Potential · 2025 · DOI

  • The need for new antimicrobials to combat Gram-positive pathogens. The lack of understanding of the properties and activities of circular bacteriocins. The need to develop new methods for the purification and characterization of circular bacteriocins.

    Characterization of Flexusin A, a Novel Circular Bacteriocin Produced by Marine Bacterium Bacillus flexus R29-2 · 2025 · DOI

  • The development of new antimicrobial agents that can effectively combat resistant bacterial strains. The need to overcome the limitations of existing antimicrobial agents, such as stability and toxicity issues. The challenge of scaling up the production of the novel antimicrobial peptide for clinical use.

    Novel Anti-MRSA Peptide from Mangrove-Derived Virgibacillus chiguensis FN33 Supported by Genomics and Molecular Dynamics · 2025 · DOI

  • The need for new antimicrobial agents to combat antibiotic-resistant bacteria. The challenges associated with the development of antimicrobial peptides, such as stability and toxicity. The lack of effective solutions to the growing problem of antibiotic resistance.

    Antimicrobial Peptides towards Clinical Application—A Long History to Be Concluded · 2024 · DOI

  • The complexity of the model should ideally align with the size of the dataset, ensuring a proportional relationship between model complexity and dataset scale. Overfitting resulting from excessive model complexity. The need to select an optimal k-value to balance model complexity and generalization ability.

    De Novo Antimicrobial Peptide Design with Feedback Generative Adversarial Networks · 2024 · DOI

  • Comprehensive summaries of AMPs' roles in skin cancer and related current clinical developments remain scarce, despite abundant emerging evidence of pro- and anti-tumour properties in other fields.

    Antimicrobial Peptides of the Skin: Roles in Skin Cancer and Clinical Applications · 2026 · DOI

  • Catestatin (CST), a neuroendocrine antimicrobial peptide produced by neurons and epithelial cells, has been implicated in skin defense against pathogens such as MRSA, though its mechanisms remain unclear.

    The neuroendocrine peptide catestatin promotes clearance of cutaneous Staphylococcus aureus through mast cell Mrgpr activation · 2026 · DOI

  • However, the broader physiological significance of the HD5-P2Y11 interaction remains poorly understood.

    Human enteric defensin 5 protects intestinal barrier integrity via cell state–dependent P2Y11–FAK–Rac1 signaling · 2026 · DOI

  • However, obtaining these peptides solely through traditional wet laboratory experiments is costly and time-consuming, and peptides identified by current computer-assisted predictive models largely lack validation of their effects via wet laboratory experiments.

    Machine learning accelerates the discovery of epitope-based dual-bioactive peptides against skin infections · 2024 · DOI

  • However, the potential AMPs and AMP resistance genes (AMPRGs) of gut microbes in different age groups have not been thoroughly assessed.

    Antimicrobial Peptides From the Gut Microbiome of the Centenarians: Diversification of Biosynthesis and Youthful Development of Resistance Genes · 2024 · DOI

  • Our findings describe a family of anuran skin-secreted AMP genes that has grown and diversified in a manner similar to other AMP families, but many of the factors shaping the evolution and expression of these AMP genes remain unclear. While this is compelling, the underlying exon shuffling process has yet to be demonstrated in anuran AMP genes, and it remains unclear why the signal peptide sequence is so constrained.

    The Rana sylvatica skin-secreted antimicrobial peptide (AMP) gene repertoire highlights broader patterns in anuran AMP evolution · 2026 · DOI

  • The paper analyzes membrane integrity data only within the 30–60 minute window post-peptide treatment; the fate of bacterial cells and extent of lipid remodeling at longer timepoints (beyond 2 hours) or after complete membrane disruption is not characterized, particularly whether surviving cells with altered lipid composition exhibit stress-induced tolerance mechanisms.

    Bacterial cell fate under stress: lipid remodeling and antimicrobial peptide attack · 2026 · DOI

  • This study did not include a Defb25 knockout model - The study was not able to entirely define the precise fibroblast subsets expressing Defb25 - Sparse defensin transcript detection limited robust fibroblast…

    A stromal β-defensin, DEFB124, contributes to cutaneous host defense against Staphylococcus aureus. · 2026 · DOI

  • Future genetic studies will be important to further define the physiological and cell-type-specific contributions of Defb25 to skin immunity - scRNA-seq analyses could be used to further define the precise fibroblast subsets expressing…

    A stromal β-defensin, DEFB124, contributes to cutaneous host defense against Staphylococcus aureus. · 2026 · DOI

  • Clarifying the selectivity mechanisms exhibited by AMPs when interacting with the membranes of the target organism - Exploring new technologies, including artificial intelligence, to improve AMPs - Investigating unexplored marine microorganisms as a promising reservoir of new bioactive…

    Antimicrobial Peptides, Their Production, and Potential in the Fight Against Antibiotic-Resistant Pathogens · 2025 · DOI

  • Investigating the peptides' activity against Gram-negative strains, - Analyzing the potential toxicity of the peptides to human cells, - Developing the peptides as anti-drug-resistant…

    Machine Learning-Based Discovery of Antimicrobial Peptides and Their Antibacterial Activity Against Staphylococcus aureus · 2025 · DOI

  • Instability and limited scalability, - Rapid proteolytic degradation, - Poor metabolic stability and limited intestinal epithelial permeability, - Short in vivo…

    Marine Antimicrobial Peptides: Advances in Discovery, Multifunctional Mechanisms, and Therapeutic Translation Challenges · 2025 · DOI

  • Rational AMPs design to enhance efficacy and safety, - Synergistic combination strategies, - De novo peptide design using artificial intelligence and machine…

    Marine Antimicrobial Peptides: Advances in Discovery, Multifunctional Mechanisms, and Therapeutic Translation Challenges · 2025 · DOI

  • The development of multidrug-resistant pathogens and the growing incidence of cancer pose significant challenges to global health. The limitations!!!!!

    The Invertebrate-Derived Antimicrobial Peptide Cm-p5 Induces Cell Death and ROS Production in Melanoma Cells · 2025 · DOI

  • The study did not investigate the long-term effects of the antimicrobial peptides, - The sample size of the macrogenomic sources was limited, - The study only evaluated the cytotoxicity of the three peptides using HEK293T…

    Synthesis and Evaluation of Aquatic Antimicrobial Peptides Derived from Marine Metagenomes Using a High-Throughput Screening Approach · 2025 · DOI

  • Information on the characteristics of bacteriocin-producing Virgibacillus is quite limited, - The study did not investigate the in vivo efficacy of FN33 AMP, - The stability of FN33 AMP was only evaluated under certain…

    Novel Anti-MRSA Peptide from Mangrove-Derived Virgibacillus chiguensis FN33 Supported by Genomics and Molecular Dynamics · 2025 · DOI

  • Investigating the use of larger ESM2 variants, - Exploring the application of the proposed models to other domains, - Further analysis of the impact of classifier performance on AMP design…

    De Novo Antimicrobial Peptide Design with Feedback Generative Adversarial Networks · 2024 · DOI

Most-cited papers in Antimicrobial Peptides and Activities

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This page shows what the Antimicrobial Peptides and Activities literature already flags as unresolved. To narrow it to your specific question, search the Research Gap Finder: the search is free with a free account and lists the papers closest to your topic first. Unlocking that topic (50 credits, charged once) fills the comparison table from our 7.9M-paper local library and writes the gaps from its rows.

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Open questions raised by papers listed on this page include: (1) The lack of understanding of the mechanistic insights of β-defensin 130 on ETEC-K88 infection (“β-defensin 130 Counteracts ETEC-K88 Infection in Mice: Mechanistic Insights…”, 2026); (2) Comprehensive summaries of AMPs' roles in skin cancer and related current clinical developments remain scarce, despite abundant emerging evidence of pro- and anti-tumour properties in other fields (“Antimicrobial Peptides of the Skin: Roles in Skin Cancer and Clinical…”, 2026); (3) Catestatin (CST), a neuroendocrine antimicrobial peptide produced by neurons and epithelial cells, has been implicated in skin defense against pathogens such as MRSA, though its mechanisms remain unclear (“The neuroendocrine peptide catestatin promotes clearance of cutaneous…”, 2026); (4) The broader physiological significance of the HD5-P2Y11 interaction remains poorly understood (“Human enteric defensin 5 protects intestinal barrier integrity via cell…”, 2026); (5) While this is compelling, the underlying exon shuffling process has yet to be demonstrated in anuran AMP genes, and it remains unclear why the signal peptide sequence is so constrained (“The Rana sylvatica skin-secreted antimicrobial peptide (AMP) gene repertoire…”, 2026). 498 gap statements have been mined from Antimicrobial Peptides and Activities papers in our 7.9M-paper local library, which holds 1,964 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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