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Han X, Zhou T, Hu X, Zhu Y, Shi Z, Chen S, Liu Y, Weng X, Zhang F, Wu S. Discovery and Characterization of MaK: A Novel Knottin Antimicrobial Peptide from Monochamus alternatus. Int J Mol Sci 2023; 24:17565. [PMID: 38139394 PMCID: PMC10743862 DOI: 10.3390/ijms242417565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
Knottin-type antimicrobial peptides possess exceptional attributes, such as high efficacy, low vulnerability to drug resistance, minimal toxicity, and precise targeting of drug sites. These peptides play a crucial role in the innate immunity of insects, offering protection against bacteria, fungi, and parasites. Knottins have garnered considerable interest as promising contenders for drug development due to their ability to bridge the gap between small molecules and protein-based biopharmaceuticals, effectively addressing the therapeutic limitations of both modalities. This work presents the isolation and identification of a novel antimicrobial peptide derived from Monochamus alternatus. The cDNA encodes a 56-amino acid knottin propeptide, while the mature peptide comprises only 34 amino acids. We have labeled this knottin peptide as MaK. Using chemically synthesized MaK, we evaluated its hemolytic activity, thermal stability, antibacterial properties, and efficacy against nematodes. The results of this study indicate that MaK is an exceptionally effective knottin-type peptide. It demonstrates low toxicity, superior stability, potent antibacterial activity, and the ability to suppress pine wood nematodes. Consequently, these findings suggest that MaK has potential use in developing innovative therapeutic agents to prevent and manage pine wilt disease.
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Affiliation(s)
- Xiaohong Han
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Tong Zhou
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China;
| | - Xinran Hu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yukun Zhu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zengzeng Shi
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shi Chen
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yunfei Liu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaoqian Weng
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Feiping Zhang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Songqing Wu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (X.H.); (X.H.); (Y.Z.); (Z.S.); (S.C.); (Y.L.); (X.W.)
- Fujian Colleges and Universities Engineering Research Institute of Conservation and Utilization of Natural Bioresources, Fujian Agriculture and Forestry, Fuzhou 350002, China
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