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Xu S, Chen S, Liu Y, Jia X, Jiang X, Che L, Lin Y, Zhuo Y, Feng B, Fang Z, Li J, Hua L, Wang J, Zhang R, Ren Z, Wu D. Generation of Porcine Angiogenin 4-Expressing Pichia pastoris and Its Protection against Intestinal Inflammatory Injury. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:153-165. [PMID: 38130066 DOI: 10.1021/acs.jafc.3c05789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Antimicrobial peptides have been extensively studied as potential alternatives to antibiotics. Porcine angiogenin 4 (pANG4) is a novel antimicrobial peptide in the angiogenin (ANG) family, which may have a regulatory effect on intestinal microflora. The object of present study is obtained pANG4 protein by heterologous expression, so as to explore the biological function of recombinant pANG4 (rpANG4). The pANG4 was expressed in Pichia pastoris (P. pastoris) and anti-inflammatory effects were investigated in intestinal porcine epithelial cell line-J2 (IPEC-J2) and mice. Purified rpANG4 had bacteriostatic activity and did not cause hemolysis or cytotoxicity at concentrations below 128 μg/mL. Purified rpANG4 increased the activity of IPEC-J2 and reduced apoptosis in vitro. rpANG4 reduced the pro-inflammatory gene expression and upregulated tight junction protein gene expression during inflammation. rpANG4 alleviated lipopolysaccharide (LPS)-induced liver and spleen damage, intestinal inflammation, jejunal apoptosis genes' expression, and improved immune function in an in vivo mice model. rpANG4 increased tight junction protein gene expression in jejunum, thereby improving the jejunum intestinal barrier function. In conclusion, rpANG4 had antibacterial activity, inhibited intestinal inflammation, improved intestinal barrier function, and alleviated liver and spleen damage. The current study contributes to the development of antibiotic substitutes and the improvement of animal health.
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Affiliation(s)
- Shengyu Xu
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Sirun Chen
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Yalei Liu
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Xinlin Jia
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Xuemei Jiang
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Lianqiang Che
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Yan Lin
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Yong Zhuo
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Bin Feng
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Zhengfeng Fang
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Jian Li
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Lun Hua
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Jianping Wang
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Ruinan Zhang
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
| | - Zhihua Ren
- College of Veterinary Medicine, Sichuan Province Key Laboratory of Animal Disease and Human Health, Key Laboratory of Environmental Hazard and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, P. R. China
| | - De Wu
- Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, P. R. China
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Robles-Loaiza AA, Pinos-Tamayo EA, Mendes B, Ortega-Pila JA, Proaño-Bolaños C, Plisson F, Teixeira C, Gomes P, Almeida JR. Traditional and Computational Screening of Non-Toxic Peptides and Approaches to Improving Selectivity. Pharmaceuticals (Basel) 2022; 15:323. [PMID: 35337121 PMCID: PMC8953747 DOI: 10.3390/ph15030323] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/01/2022] [Accepted: 03/04/2022] [Indexed: 12/27/2022] Open
Abstract
Peptides have positively impacted the pharmaceutical industry as drugs, biomarkers, or diagnostic tools of high therapeutic value. However, only a handful have progressed to the market. Toxicity is one of the main obstacles to translating peptides into clinics. Hemolysis or hemotoxicity, the principal source of toxicity, is a natural or disease-induced event leading to the death of vital red blood cells. Initial screenings for toxicity have been widely evaluated using erythrocytes as the gold standard. More recently, many online databases filled with peptide sequences and their biological meta-data have paved the way toward hemolysis prediction using user-friendly, fast-access machine learning-driven programs. This review details the growing contributions of in silico approaches developed in the last decade for the large-scale prediction of erythrocyte lysis induced by peptides. After an overview of the pharmaceutical landscape of peptide therapeutics, we highlighted the relevance of early hemolysis studies in drug development. We emphasized the computational models and algorithms used to this end in light of historical and recent findings in this promising field. We benchmarked seven predictors using peptides from different data sets, having 7-35 amino acids in length. According to our predictions, the models have scored an accuracy over 50.42% and a minimal Matthew's correlation coefficient over 0.11. The maximum values for these statistical parameters achieved 100.0% and 1.00, respectively. Finally, strategies for optimizing peptide selectivity were described, as well as prospects for future investigations. The development of in silico predictive approaches to peptide toxicity has just started, but their important contributions clearly demonstrate their potential for peptide science and computer-aided drug design. Methodology refinement and increasing use will motivate the timely and accurate in silico identification of selective, non-toxic peptide therapeutics.
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Affiliation(s)
- Alberto A. Robles-Loaiza
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Tena 150150, Ecuador; (A.A.R.-L.); (B.M.); (J.A.O.-P.); (C.P.-B.)
| | - Edgar A. Pinos-Tamayo
- Escuela Superior Politécnica del Litoral, ESPOL, Centro Nacional de Acuicultura e Investigaciones Marinas (CENAIM), Campus Gustavo Galindo Km. 30, 5 Vía Perimetral, Guayaquil 09-01-5863, Ecuador;
| | - Bruno Mendes
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Tena 150150, Ecuador; (A.A.R.-L.); (B.M.); (J.A.O.-P.); (C.P.-B.)
| | - Josselyn A. Ortega-Pila
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Tena 150150, Ecuador; (A.A.R.-L.); (B.M.); (J.A.O.-P.); (C.P.-B.)
| | - Carolina Proaño-Bolaños
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Tena 150150, Ecuador; (A.A.R.-L.); (B.M.); (J.A.O.-P.); (C.P.-B.)
| | - Fabien Plisson
- Consejo Nacional de Ciencia y Tecnología, Unidad de Genómica Avanzada, Laboratorio Nacional de Genómica para la Biodiversidad (Langebio), Centro de Investigación Y de Estudios Avanzados del IPN, Irapuato 36824, Mexico;
| | - Cátia Teixeira
- Laboratório Associado para a Química Verde-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal; (C.T.); (P.G.)
| | - Paula Gomes
- Laboratório Associado para a Química Verde-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal; (C.T.); (P.G.)
| | - José R. Almeida
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Tena 150150, Ecuador; (A.A.R.-L.); (B.M.); (J.A.O.-P.); (C.P.-B.)
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Tang H, Liu Y, Li B, Shang B, Yang J, Zhang C, Yang L, Chen K, Wang W, Liu J. Water-soluble PANI:PSS designed for spontaneous non-disruptive membrane penetration and direct intracellular photothermal damage on bacteria. Bioact Mater 2021; 6:4758-4771. [PMID: 34136724 PMCID: PMC8166762 DOI: 10.1016/j.bioactmat.2021.05.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/12/2021] [Accepted: 05/12/2021] [Indexed: 12/11/2022] Open
Abstract
The major challenge in the field of antibacterial agents is to overcome the low-permeability of bacteria cell membranes that protects the cells against diverse drugs. In this work, water-soluble polyaniline (PANI)-poly (p-styrenesulfonic acid) (PSS) (PANI:PSS) is found to spontaneously penetrate bacteria cellular membranes in a non-disruptive way, leaving no evidence of membrane poration/disturbance or cell death, thus avoiding side effects caused by cationic ammonia groups in traditional ammonia-containing antibacterial agents. For aqueous synthesis, which is important for biocompatibility, the polymer is synthesized via an enzyme-mimetic route relying on the catalysis of a nanozyme. Owing to its fluorescent properties, the localization of as-prepared PANI:PSS is determined by the confocal microscope, and the results confirm its rapid entry into bacteria. Under 808 nm near-infrared (NIR) irradiation, the internalized PANI:PSS generates local hyperthermia and destroys bacteria highly efficiently from inside the cells due to its excellent photothermal effects. Staphylococcus aureus (S. aureus), M ethicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli (E. coli) could be effectively eliminated as well as the corresponding bacterial biofilms. Results of in vivo antibacterial experiments demonstrate excellent antibacterial activities of the water-soluble PANI:PSS without side effects. Therefore, the prepared water-soluble polymer in this study has great potential in the treatment of various bacterial infections.
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Affiliation(s)
- Huanfeng Tang
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Yifan Liu
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Bing Li
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, PR China
| | - Bo Shang
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Jiacheng Yang
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Congrou Zhang
- Tianjin Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Chinese Academy of Medical Sciences, And Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
| | - Lijun Yang
- Tianjin Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Chinese Academy of Medical Sciences, And Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
| | - Kezheng Chen
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Wei Wang
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Jianfeng Liu
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
- Tianjin Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Chinese Academy of Medical Sciences, And Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
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Lin Q, Fu Q, Su G, Chen D, Yu B, Luo Y, Zheng P, Mao X, Huang Z, Yu J, Luo J, Yan H, He J. Protective effect of Bombyx mori gloverin on intestinal epithelial cells exposure to enterotoxigenic E. coli. Braz J Microbiol 2021; 52:1235-1245. [PMID: 34155582 PMCID: PMC8324673 DOI: 10.1007/s42770-021-00532-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/13/2021] [Indexed: 10/21/2022] Open
Abstract
Bombyx mori gloverin A2 (BMGlvA2) is an induced antimicrobial insect protein isolated from Bombyx mori. This study was conducted to explore the effect and potential mechanisms of BMGlvA2 on inflammatory responses and cellular functions in intestinal epithelial cells (IPEC-J2) exposure to enterotoxigenic E. coli (ETEC). IPEC-J2 cells pretreated with or without BMGlvA2 (12.5 μg/mL) were challenged by ETEC K88 (1×106 CFU/well) or culture medium. We show that BMGlvA2 pretreatment increased the cell viability and improved the distribution and abundance of tight junction protein ZO-1 in IPEC-J2 cells exposure to ETEC (P < 0.05). Interestingly, BMGlvA2 not only decreased the expression levels of inflammatory cytokines such as the tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), but also decreased the expression level of Caspase3 and the apoptosis rate in the ETEC-challenged cells (P < 0.05). Importantly, BMGlvA2 decreased the protein abundances of two critical inflammation-associated signaling proteins, phosphorylated nuclear factor-kappa-B inhibitor alpha (p-IκBα) and phosphorylated nuclear factor-kappa B (p-NF-κB), in the ETEC-challenged cells. These results indicate that BMGlvA2 attenuates ETEC-induced inflammation in the IPEC-J2 cells by regulating the NF-κB signaling pathway, resulting in decreased secretion of inflammatory cytokine and reduced cell apoptosis.
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Affiliation(s)
- Qian Lin
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Qingqing Fu
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Guoqi Su
- Chongqing Academy of Animal Sciences, Chongqing, 402460, People's Republic of China
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Bing Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Yuheng Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Ping Zheng
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Xiangbing Mao
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Zhiqing Huang
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Jie Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Junqiu Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Hui Yan
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China
| | - Jun He
- Institute of Animal Nutrition, Sichuan Agricultural University, Sichuan Province, Chengdu, 611130, People's Republic of China.
- Key Laboratory of Animal Disease-Resistant Nutrition, Sichuan Province, Chengdu, 611130, People's Republic of China.
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Lin Q, Fu Q, Chen D, Yu B, Luo Y, Huang Z, Zheng P, Mao X, Yu J, Luo J, Yan H, He J. Functional Characterization of Porcine NK-Lysin: A Novel Immunomodulator That Regulates Intestinal Inflammatory Response. Molecules 2021; 26:molecules26144242. [PMID: 34299517 PMCID: PMC8307250 DOI: 10.3390/molecules26144242] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/01/2021] [Accepted: 07/09/2021] [Indexed: 11/16/2022] Open
Abstract
Porcine NK-Lysine (PNKL) is a new antimicrobial peptide (AMP) identified in the small intestine. In this study, PNKL protein was obtained through heterologous expression in Escherichia coli and was estimated by SDS-PAGE at 33 kDa. The antibacterial activities of PNKL were determined using various bacterial strains and showed broad-spectrum antimicrobial activity against Gram-negative and Gram-positive bacteria. Furthermore, E. coli K88-challenged IPEC-J2 cells were used to determine PNKL influences on inflammatory responses. Hemolytic assays showed that PNKL had no detrimental impact on cell viability. Interestingly, PNKL elevated the viability of IPEC-J2 cells exposure to E. coli K88. PNKL significantly decreased the cell apoptosis rate, and improved the distribution and abundance of tight junction protein ZO-1 in IPEC-J2 cells upon E. coli K88-challenge. Importantly, PNKL not only down regulated the expressions of inflammatory cytokines such as the IL-6 and TNF-α, but also down regulated the expressions of NF-κB, Caspase3, and Caspase9 in the E. coli K88-challenged cells. These results suggest a novel function of natural killer (NK)-lysin, and the anti-bacterial and anti-inflammatory properties of PNKL may allow it a potential substitute for conventionally used antibiotics or drugs.
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Affiliation(s)
- Qian Lin
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Qingqing Fu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Bing Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Yuheng Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Zhiqing Huang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Ping Zheng
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Xiangbing Mao
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Jie Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Junqiu Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Hui Yan
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Jun He
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
- Correspondence: ; Tel.: +86-28-8629-1781; Fax: +86-28-8629-0922
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Expression of Anti-Lipopolysaccharide Factor Isoform 3 in Chlamydomonas reinhardtii Showing High Antimicrobial Activity. Mar Drugs 2021; 19:md19050239. [PMID: 33922554 PMCID: PMC8146899 DOI: 10.3390/md19050239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/20/2021] [Accepted: 04/20/2021] [Indexed: 01/10/2023] Open
Abstract
Antimicrobial peptides are a class of proteins with antibacterial functions. In this study, the anti-lipopolysaccharide factor isoform 3 gene (ALFPm3), encoding an antimicrobial peptide from Penaeus monodon with a super activity was expressed in Chlamydomonas reinhardtii, which would develop a microalga strain that can be used for the antimicrobial peptide production. To construct the expression cluster, namely pH2A-Pm3, the codon optimized ALFPm3 gene was fused with the ble reporter by 2A peptide and inserted into pH124 vector. The glass-bead method was performed to transform pH2A-Pm3 into C. reinhardtii CC-849. In addition to 8 μg/mL zeocin resistance selection, the C. reinhardtii transformants were further confirmed by genomic PCR and RT-PCR. Western blot analysis showed that the C. reinhardtii-derived ALFPm3 (cALFPm3) was successfully expressed in C. reinhardtii transformants and accounted for 0.35% of the total soluble protein (TSP). Furthermore, the results of antibacterial assay revealed that the cALFPm3 could significantly inhibit the growth of a variety of bacteria, including both Gram-negative bacteria and Gram-positive bacteria at a concentration of 0.77 μM. Especially, the inhibition could last longer than 24 h, which performed better than ampicillin. Hence, this study successfully developed a transgenic C. reinhardtii strain, which can produce the active ALFPm3 driven from P. monodon, providing a potential strategy to use C. reinhardtii as the cell factory to produce antimicrobial peptides.
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Antimicrobial peptide CGA-N12 decreases the Candida tropicalis mitochondrial membrane potential via mitochondrial permeability transition pore. Biosci Rep 2020; 40:223802. [PMID: 32368781 PMCID: PMC7225414 DOI: 10.1042/bsr20201007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/20/2020] [Accepted: 05/04/2020] [Indexed: 12/17/2022] Open
Abstract
Amino acid sequence from 65th to 76th residue of the N-terminus of Chromogranin A (CGA-N12) is an antimicrobial peptide (AMP). Our previous studies showed that CGA-N12 reduces Candida tropicalis mitochondrial membrane potential. Here, we explored the mechanism that CGA-N12 collapsed the mitochondrial membrane potential by investigations of its action on the mitochondrial permeability transition pore (mPTP) complex of C. tropicalis. The results showed that CGA-N12 induced cytochrome c (Cyt c) leakage, mitochondria swelling and led to polyethylene glycol (PEG) of molecular weight 1000 Da penetrate mitochondria. mPTP opening inhibitors bongkrekic acid (BA) could contract the mitochondrial swelling induced by CGA-N12, but cyclosporin A (CsA) could not. Therefore, we speculated that CGA-N12 could induce C. tropicolis mPTP opening by preventing the matrix-facing (m) conformation of adenine nucleotide transporter (ANT), thereby increasing the permeability of the mitochondrial membrane and resulted in the mitochondrial potential dissipation.
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Lin Q, Su G, Wu A, Chen D, Yu B, Huang Z, Luo Y, Mao X, Zheng P, Yu J, Luo J, He J. Bombyx mori gloverin A2 alleviates enterotoxigenic Escherichia coli-induced inflammation and intestinal mucosa disruption. Antimicrob Resist Infect Control 2019; 8:189. [PMID: 31788236 PMCID: PMC6878672 DOI: 10.1186/s13756-019-0651-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 11/11/2019] [Indexed: 01/20/2023] Open
Abstract
Background Enterotoxigenic Escherichia coli (ETEC) is one of the leading bacterial causes of intestinal inflammation and diarrhea. However, the ETEC is frequently resistant to common antibiotics. In this study, we explored the role of a novel antibacterial peptide Bombyx mori gloverin A2 (BMGlvA2) in alleviating ETEC-induced inflammation and intestinal epithelium disruption in mice. Methods An ETEC-challenged mice model was used, and the ETEC-challenged mice and non-challenged mice were treated by the BMGlvA2 at different doses. Results ETEC challenge not only elevated the concentrations of serum inflammatory cytokines such as the IL-6 and TNF-α (P < 0.01), but also elevated the concentrations of serum creatinine and urea (P < 0.05). However, BMGlvA2 attenuated the inflammatory responses by decreasing the serum inflammatory cytokines and improving the metabolisms in ETEC-challenged mice, and alleviated the ETEC-induced tissue damage in spleen. Moreover, BMGlvA2 treatment significantly elevated the duodenum villus height and decreased the crypt depth in the duodenum and ileum in ETEC-challenged mice (P < 0.05). Interestingly, BMGlvA2 improved the distribution and abundance of tight-junction protein ZO1 in duodenum and ileum epithelium after ETEC-challenge. Moreover, BMGlvA2 significantly down-regulated the expression levels of inflammatory cytokines (IL-1β, IL-6, and TNF-α) and the apoptosis-related genes (Caspase 8 and Caspase 9) in jejunal mucosa (P < 0.05) in the TETC-challenged mice. Importantly, BMGlvA2 significantly elevated the expression levels of critical genes related to mucosal barrier functions such as the mucins (MUC1 and MUC2) and glucose transporter (GLUT2) in the intestinal mucosa (P < 0.05). Conclusion Our results suggested a novel function of the conventional antibacterial peptides, and the anti-bacterial and anti-inflammatory properties of BMGlvA2 may allow it a potential substitute for conventionally used antibiotics or drugs.
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Affiliation(s)
- Qian Lin
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Guoqi Su
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Aimin Wu
- Guangdong Key Laboratory for Innovative Development and Uilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, 510642 China
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Bing Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Zhiqing Huang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Yuheng Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Xiangbing Mao
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Ping Zheng
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Jie Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Junqiu Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
| | - Jun He
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130 People’s Republic of China
- Key Laboratory for Animal Disease-Resistance Nutrition and Feed, Ministry of Agriculture, Chengdu, Sichuan 625014 People’s Republic of China
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Su G, Xie K, Chen D, Yu B, Huang Z, Luo Y, Mao X, Zheng P, Yu J, Luo J, He J. Differential expression, molecular cloning, and characterization of porcine beta defensin 114. J Anim Sci Biotechnol 2019; 10:60. [PMID: 31360462 PMCID: PMC6639935 DOI: 10.1186/s40104-019-0367-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/22/2019] [Indexed: 01/06/2023] Open
Abstract
Background β-defensins have attracted considerable research interest because of their roles in protecting hosts from various pathogens. This study was conducted to investigate the expression profiles of the porcine β-defensin 114 (PBD114) in different breeds and in response to infections. Moreover, the function of PBD114 protein was partially investigated. Methods Six Tibetan pigs (TP) and six DLY (Duroc×Landrace×Yorkshire) pigs were slaughtered to explore the expression profiles of PBD114 in different breeds and tissues. For infection models, sixteen DLY pigs were divided into two groups and challenged either with sterile saline or E. coli K88. The recombinant protein PBD114 (rPBD114) was obtained by using a heterologous expression system in E. coli. Results PBD114 gene was highly expressed in tissues such as the intestine, liver, spleen, and thymus. Interestingly, the expression level of PBD114 gene was higher in the TP pigs than in the DLY pigs (P < 0.05), and was significantly elevated upon E. coli K88 challenge (P < 0.05). The nucleotide sequences of PBD114 from Tibetan and DLY pigs was identical, and both showed a 210-bp open reading frame encoding a 69-amino acid mature peptide. To explaore the function of PBD114 protein, PBD114 gene was successfully expressed in E. coli Origami B (DE3) and the molecular weight of the rPBD114 was estimated by SDS-PAGE to be 25 kDa. The rPBD114 was purified and mass spectrometry verified the protein as PBD114. Importantly, rPBD114 showed antimicrobial activities against E. coli DH5α and E. coli K88, and the minimal inhibitory concentrations (MICs) were 64 and 128 μg/mL, respectively. Hemolytic and cytotoxicity assays showed that rPBD114 did not affect cell viability under physiological concentrations. Conclusions PBD114 is an infection response gene that is differentially-expressed between different porcine breeds and tissues. The antimicrobial activity of PBD114 protein, against pathogens such as the E. coli K88, suggested that it may serve as a candidate for the substitution of conventionally used antibiotics. Electronic supplementary material The online version of this article (10.1186/s40104-019-0367-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Guoqi Su
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Kunhong Xie
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Daiwen Chen
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Bing Yu
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Zhiqing Huang
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Yuheng Luo
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Xiangbing Mao
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Ping Zheng
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Jie Yu
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Junqiu Luo
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
| | - Jun He
- 1Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130 People's Republic of China.,2Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 625014 People's Republic of China
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