ArticleBMC veterinary research2023
Host defence peptide LEAP2 contributes to antimicrobial activity in a mustache toad (Leptobrachium liui).
Article in BMC veterinary research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Antimicrobial Peptides for Skin Wound Healing.Biomolecules · 2025Review
- Molecular Characterization of the Liver-Expressed Antimicrobial Peptide 2 (LEAP2) fromAnimals : an open access journal from MDPI · 2025Article
- Evolution and Comparative Genomics of the Transforming Growth Factor-β-Related Proteins in Nile Tilapia.Molecular biotechnology · 2025Article
- Identification and characterisation of LEAP2 from Chinese spiny frogs (Quasipaa spinosa) with antimicrobial and macrophage activation properties.BMC veterinary research · 2025Article
- Peptide with Dual Roles in Immune and Metabolic Regulation: Liver-Expressed Antimicrobial Peptide-2 (LEAP-2).Molecules (Basel, Switzerland) · 2025Review
- LEAP2 in Physiology-A Narrative Review.International journal of molecular sciences · 2025Review
- Article
- Antibacterial Activity of AXOTL-13, a Novel Peptide Identified from the Transcriptome of the SalamanderPharmaceutics · 2024Article
- Discovery of Ll-CATH: a novel cathelicidin from the Chong'an Moustache Toad (Leptobrachium liui) with antibacterial and immunomodulatory activity.BMC veterinary research · 2024Article
- Structure-activity relationships of the intramolecular disulphide bonds in LEAP2, an antimicrobial peptide from Acrossocheilus fasciatus.BMC veterinary research · 2024Article
- An esculentin-1 homolog from a dark-spotted frog (Pelophylax nigromaculatus) possesses antibacterial and immunoregulatory properties.BMC veterinary research · 2024Article
- Antimicrobial peptides as drugs with double response againstFrontiers in microbiology · 2023Review
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Authors and funding
7 authors.
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Abstract
backgroundThe liver-expressed antimicrobial peptide 2 (LEAP2) is essential in host immunity against harmful pathogens and is only known to act as an extracellular modulator to regulate embryonic development in amphibians. However, there is a dearth of information on the antimicrobial function of amphibian LEAP2. Hence, a LEAP2 homologue from Leptobrachium liui was identified, characterized, and chemically synthesized, and its antibacterial activities and mechanisms were determined.
resultsIn this study, LEAP2 gene (Ll-LEAP2) cDNA was cloned and sequenced from the Chong'an Moustache Toad (Leptobrachium liui). The predicted amino acid sequence of Ll-LEAP2 comprises a signal peptide, a mature peptide, and a prodomain. From sequence analysis, it was revealed that Ll-LEAP2 belongs to the cluster of amphibian LEAP2 and displays high similarity to the Tropical Clawed Frog (Xenopus tropicalis)'s LEAP2. Our study revealed that LEAP2 protein was found in different tissues, with the highest concentration in the kidney and liver of L. liui; and Ll-LEAP2 mRNA transcripts were expressed in various tissues with the kidney having the highest mRNA expression level. As a result of Aeromonas hydrophila infection, Ll-LEAP2 underwent a noticeable up-regulation in the skin while it was down-regulated in the intestines. The chemically synthesized Ll-LEAP2 mature peptide was selective in its antimicrobial activity against several in vitro bacteria including both gram-positive and negative bacteria. Additionally, Ll-LEAP2 can kill specific bacteria by disrupting bacterial membrane and hydrolyzing bacterial gDNA.
conclusionsThis study is the first report on the antibacterial activity and mechanism of amphibian LEAP2. With more to uncover, the immunomodulatory functions and wound-healing activities of Ll-LEAP2 holds great potential for future research.
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