1
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Li X, Su N, Yu H, Li X, Sun SL. Hainanenin-1, an oncolytic peptide, triggers immunogenic cell death via STING activation in triple-negative breast cancer. Cell Commun Signal 2024; 22:352. [PMID: 38970078 PMCID: PMC11225514 DOI: 10.1186/s12964-024-01731-6] [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: 04/11/2024] [Accepted: 06/30/2024] [Indexed: 07/07/2024] Open
Abstract
BACKGROUND In triple-negative breast cancer (TNBC) therapy, insufficient tumor infiltration by lymphocytes significantly hinders the efficacy of immune checkpoint inhibitors. We have previously demonstrated that Hainanenin-1 (HN-1), a host defense peptide (HDP) identified from Hainan frog skin, induces breast cancer apoptosis and boots anti-tumor immunity via unknown mechanism. METHODS We used in vitro experiments to observe immunogenic cell death (ICD) indicators in HN-1-treated TNBC cell lines, a mouse tumor model to verify HN-1 promotion of mice anti-tumor immune response, and an in vitro drug sensitivity test of patient-derived breast cancer cells to verify the inhibitory effect of HN-1. RESULTS HN-1 induced ICD in TNBC in a process during which damage-associated molecular patterns (DAMPs) were released that could further increase the anti-tumor immune response. The secretion level of interleukin 2 (IL-2), IL-12, and interferon γ in the co-culture supernatant was increased, and dendritic cells (DCs) were activated via a co-culture with HN-1-pretreated TNBC cells. As a result, HN-1 increased the infiltration of anti-tumor immune cells (DCs and T lymphocytes) in the mouse model bearing both 4T1 and EMT6 tumors. Meanwhile, regulatory T cells and myeloid-derived suppressor cells were suppressed. In addition, HN-1 induced DNA damage, and double-strand DNA release in the cytosol was significantly enhanced, indicating that HN-1 might stimulate ICD via activation of STING pathway. The knockdown of STING inhibited HN-1-induced ICD. Of note, HN-1 exhibited inhibitory effects on patient-derived breast cancer cells under three-dimensional culture conditions. CONCLUSIONS Collectively, our study demonstrated that HN-1 could be utilized as a potential compound that might augment immunotherapy effects in patients with TNBC.
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Affiliation(s)
- Xiaoxi Li
- Central Laboratory, Cancer Hospital of Dalian University of Technology, Cancer Hospital of China Medical University (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China
| | - Nan Su
- Central Laboratory, Cancer Hospital of Dalian University of Technology, Cancer Hospital of China Medical University (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China
| | - Haining Yu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China.
| | - Xiaoyan Li
- Department of Pathology, Cancer Hospital of Dalian University of Technology, Cancer Hospital of China Medical University (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China.
| | - Shu-Lan Sun
- Central Laboratory, Cancer Hospital of Dalian University of Technology (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China.
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2
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Zhu Y, Wang K, Jia X, Fu C, Yu H, Wang Y. Antioxidant peptides, the guardian of life from oxidative stress. Med Res Rev 2024; 44:275-364. [PMID: 37621230 DOI: 10.1002/med.21986] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 08/01/2023] [Accepted: 08/06/2023] [Indexed: 08/26/2023]
Abstract
Reactive oxygen species (ROS) are produced during oxidative metabolism in aerobic organisms. Under normal conditions, ROS production and elimination are in a relatively balanced state. However, under internal or external environmental stress, such as high glucose levels or UV radiation, ROS production can increase significantly, leading to oxidative stress. Excess ROS production not only damages biomolecules but is also closely associated with the pathogenesis of many diseases, such as skin photoaging, diabetes, and cancer. Antioxidant peptides (AOPs) are naturally occurring or artificially designed peptides that can reduce the levels of ROS and other pro-oxidants, thus showing great potential in the treatment of oxidative stress-related diseases. In this review, we discussed ROS production and its role in inducing oxidative stress-related diseases in humans. Additionally, we discussed the sources, mechanism of action, and evaluation methods of AOPs and provided directions for future studies on AOPs.
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Affiliation(s)
- Yiyun Zhu
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Kang Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Xinyi Jia
- National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu, China
- Department of Food Science and Technology, Food Science and Technology Center, National University of Singapore, Singapore, Singapore
| | - Caili Fu
- National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu, China
| | - Haining Yu
- Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian, Liaoning, China
| | - Yipeng Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
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3
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Migoń D, Jaśkiewicz M, Neubauer D, Bauer M, Sikorska E, Kamysz E, Kamysz W. Alanine Scanning Studies of the Antimicrobial Peptide Aurein 1.2. Probiotics Antimicrob Proteins 2020; 11:1042-1054. [PMID: 30569430 PMCID: PMC6695355 DOI: 10.1007/s12602-018-9501-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Antimicrobial peptides (AMPs) are compounds widely distributed in nature that display activity against a broad spectrum of pathogens. Amphibian skin, as an organ rich in pharmacologically active peptides, appears to be an interesting source of novel AMPs. Aurein 1.2 (GLFDIIKKIAESF-NH2) is a short 13-residue antimicrobial peptide primarily isolated from the skin secretions of Australian bell frogs. In this study, the alanine scan of aurein 1.2 was performed to investigate the effect of each amino acid residue on its biological and physico-chemical properties. The biological studies included determination of minimum inhibitory concentration, activity against biofilm, and inhibitory effect on its formation. Moreover, the hemolytic activity as well as serum stability was determined. The hydrophobicity of peptides and their self-assembly were investigated using reversed-phase chromatography. In addition, their helicity was calculated from circular dichroism spectra. The results not only provided information on structure-activity relationship of aurein 1.2 but also gave insights into design of novel analogs of AMPs in the future.
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Affiliation(s)
- Dorian Migoń
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416, Gdańsk, Poland. .,Polpharma Biologics, Gdańsk, Poland.
| | - Maciej Jaśkiewicz
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Damian Neubauer
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | - Marta Bauer
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416, Gdańsk, Poland
| | | | | | - Wojciech Kamysz
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416, Gdańsk, Poland
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4
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Sousa NA, Oliveira GAL, de Oliveira AP, Lopes ALF, Iles B, Nogueira KM, Araújo TSL, Souza LKM, Araújo AR, Ramos-Jesus J, Plácido A, Amaral C, Campelo YDM, Barbosa EA, Portugal CC, Socodato R, Lobo A, Relvas J, Bemquerer M, Eaton P, Leite JRSA, Medeiros JVR. Novel Ocellatin Peptides Mitigate LPS-induced ROS Formation and NF-kB Activation in Microglia and Hippocampal Neurons. Sci Rep 2020; 10:2696. [PMID: 32060388 PMCID: PMC7021831 DOI: 10.1038/s41598-020-59665-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 01/31/2020] [Indexed: 12/18/2022] Open
Abstract
Cutaneous secretions of amphibians have bioactive compounds, such as peptides, with potential for biotechnological applications. Therefore, this study aimed to determine the primary structure and investigate peptides obtained from the cutaneous secretions of the amphibian, Leptodactylus vastus, as a source of bioactive molecules. The peptides obtained possessed the amino acid sequences, GVVDILKGAAKDLAGH and GVVDILKGAAKDLAGHLASKV, with monoisotopic masses of [M + H]± = 1563.8 Da and [M + H]± = 2062.4 Da, respectively. The molecules were characterized as peptides of the class of ocellatins and were named as Ocellatin-K1(1-16) and Ocellatin-K1(1-21). Functional analysis revealed that Ocellatin-K1(1-16) and Ocellatin-K1(1-21) showed weak antibacterial activity. However, treatment of mice with these ocellatins reduced the nitrite and malondialdehyde content. Moreover, superoxide dismutase enzymatic activity and glutathione concentration were increased in the hippocampus of mice. In addition, Ocellatin-K1(1-16) and Ocellatin-K1(1-21) were effective in impairing lipopolysaccharide (LPS)-induced reactive oxygen species (ROS) formation and NF-kB activation in living microglia. We incubated hippocampal neurons with microglial conditioned media treated with LPS and LPS in the presence of Ocellatin-K1(1-16) and Ocellatin-K1(1-21) and observed that both peptides reduced the oxidative stress in hippocampal neurons. Furthermore, these ocellatins demonstrated low cytotoxicity towards erythrocytes. These functional properties suggest possible to neuromodulatory therapeutic applications.
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Affiliation(s)
- Nayara A Sousa
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil
| | - Guilherme A L Oliveira
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil
| | - Ana Patrícia de Oliveira
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil
| | - André Luís F Lopes
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil
| | - Bruno Iles
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil
| | - Kerolayne M Nogueira
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil
| | - Thiago S L Araújo
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil.,Instituto de Educação Superior do Vale do Parnaíba, FAHESP/IESVAP/NRE, Parnaíba, Brazil
| | - Luan K M Souza
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil.,Instituto de Educação Superior do Vale do Parnaíba, FAHESP/IESVAP/NRE, Parnaíba, Brazil
| | - Alyne R Araújo
- Núcleo de Pesquisa em Biodiversidade e Biotecnologia, Universidade Federal do Piauí, UFPI, Piauí, Brazil
| | - Joilson Ramos-Jesus
- Núcleo de Pesquisa em Biodiversidade e Biotecnologia, Universidade Federal do Piauí, UFPI, Piauí, Brazil.,Instituto de Educação Superior do Vale do Parnaíba, FAHESP/IESVAP/NRE, Parnaíba, Brazil
| | - Alexandra Plácido
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciencias da Universidade do Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde and Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal
| | - Constança Amaral
- Instituto de Medicina Molecular, IMM, Universidade de Lisboa, Lisboa, Portugal
| | - Yuri D M Campelo
- Instituto de Educação Superior do Vale do Parnaíba, FAHESP/IESVAP/NRE, Parnaíba, Brazil
| | - Eder Alves Barbosa
- Laboratório de Síntese e Análise de Biomoléculas, LSAB, Instituto de Química, UnB, Brasília, Brazil
| | - Camila C Portugal
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciencias da Universidade do Porto, Porto, Portugal
| | - Renato Socodato
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciencias da Universidade do Porto, Porto, Portugal
| | - Andrea Lobo
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciencias da Universidade do Porto, Porto, Portugal
| | - Joao Relvas
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciencias da Universidade do Porto, Porto, Portugal
| | | | - Peter Eaton
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciencias da Universidade do Porto, Porto, Portugal.,Instituto de Medicina Molecular, IMM, Universidade de Lisboa, Lisboa, Portugal
| | - José Roberto S A Leite
- Núcleo de Pesquisa em Morfologia e Imunonologia Aplicada, NuPMIA, Área Morfologia, Faculdade de Medicina, UnB, Brasília, Brazil
| | - Jand Venes R Medeiros
- Laboratório de Farmacologia da Inflamação e Doenças Gastrintestinais, Universidade Federal do Delta do Parnaíba, UFDPar, Piauí, Brazil. .,Núcleo de Pesquisa em Biodiversidade e Biotecnologia, Universidade Federal do Piauí, UFPI, Piauí, Brazil.
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5
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Pei J, Chen D, Jin W, Geng J, Wang W, Zhang S, Yue T, Zhang H. Structure and mode of action of a novel antibacterial peptide from the blood of Andrias davidianus. Lett Appl Microbiol 2019; 69:312-317. [PMID: 31529504 DOI: 10.1111/lam.13219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 11/19/2018] [Accepted: 11/20/2018] [Indexed: 12/26/2022]
Abstract
Andrias davidianus is widely recognized in traditional medicine as a cure-all to treat a plethora of ailments. In a previous study, a novel antibacterial peptide named andricin B was isolated from A. davidianus blood. In this study, we investigated andricin B structure and its mode of action. Circular dichroism spectra suggested that andricin B adopts a random coil state in aqueous solution and a more rigid conformation in the presence of bacteria. Moreover propidium iodide/fluorescein diacetate double staining indicated that bacteria treated with andricin B were not immediately eliminated. Rather, there is a gradual bacterial death, followed by a sublethal stage. Scanning electronic microscope imaging indicates that andricin B might form pores on cell membranes, leading to the release of cytoplasmic contents. These results were consistent with flow cytometry analysis. Furthermore, Fourier transform infrared spectroscopy suggests that andricin B induces changes in the chemical properties in the areas surrounding these "pores" on the cell membranes. SIGNIFICANCE AND IMPACT OF THE STUDY: The results of this study suggested the new perspectives about the mode of action of antimicrobial peptide (AMP) active against sensitive bacteria. The AMP was able to be in a random coiled state in aqueous solution but to change to a more rigid one in the presence of sensitive bacteria. Exposure to AMP might not lead to immediate death of treated bacteria, rather bacteria concentration decreased gradually flattening at a sublethal stage. These findings will help people to understand better how the AMPs activate against sensitive bacteria.
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Affiliation(s)
- J Pei
- Shaanxi Key Laboratory of Biology and Bioresources, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - D Chen
- Shaanxi Key Laboratory of Biology and Bioresources, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - W Jin
- Shaanxi Key Laboratory of Biology and Bioresources, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - J Geng
- Shaanxi Key Laboratory of Biology and Bioresources, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - W Wang
- Shaanxi Key Laboratory of Biology and Bioresources, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - S Zhang
- Shaanxi Key Laboratory of Biology and Bioresources, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong, Shaanxi, China
| | - T Yue
- College of Food Science, Northwest University, Xi'an, Shaanxi, China
| | - H Zhang
- College of Food Science, Qilu University of Technology, Shandong, China
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6
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Zhang F, Guo ZL, Chen Y, Li L, Yu HN, Wang YP. Effects of C-terminal amidation and heptapeptide ring on the biological activities and advanced structure of amurin-9KY, a novel antimicrobial peptide identified from the brown frog, Rana kunyuensis. Zool Res 2018; 40:198-204. [PMID: 30127331 PMCID: PMC6591156 DOI: 10.24272/j.issn.2095-8137.2018.070] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Rana kunyuensis is a species of brown frog that lives exclusively on Kunyu Mountain, Yantai, China. In the current study, a 279-bp cDNA sequence encoding a novel antimicrobial peptide (AMP), designated as amurin-9KY, was cloned from synthesized double-strand skin cDNA of R. kunyuensis. The amurin-9KY precursor was composed of 62 amino acid (aa) residues, whereas the mature peptide was composed of 14 aa and contained two cysteines forming a C-terminal heptapeptide ring (Rana box domain) and an amidated C-terminus. These structural characters represent a novel amphibian AMP family. Although amurin-9KY exhibited high similarity to the already identified amurin-9AM from R. amurensis, little is known about the structures and activities of amurin-9 family AMPs so far. Therefore, amurin-9KY and its three derivatives (amurin-9KY1–3) were designed and synthesized. The structures and activities were examined to evaluate the influence of C-terminal amidation and the heptapeptide ring on the activities and structure of amurin-9KY. Results indicated that C-terminal amidation was essential for antimicrobial activity, whereas both C-terminal amidation and the heptapeptide ring played roles in the low hemolytic activity. Circular dichroism (CD) spectra showed that the four peptides adopted an α-helical conformation in THF/H2O (v/v 1:1) solution, but a random coil in aqueous solution. Elimination of the C-terminal heptapeptide ring generated two free cysteine residues with unpaired thiol groups, which greatly increased the concentration-dependent anti-oxidant activity. Scanning electron microscopy (SEM) was also performed to determine the possible bactericidal mechanisms.
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Affiliation(s)
- Fen Zhang
- Department of Pharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China
| | - Zhi-Lai Guo
- School of Life Sciences, Guizhou Normal University, Guiyang Guizhou 550001, China
| | - Yan Chen
- Department of Pharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China
| | - Li Li
- School of Life Sciences, Guizhou Normal University, Guiyang Guizhou 550001, China
| | - Hai-Ning Yu
- Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian Liaoning 116023, China; E-mail:
| | - Yi-Peng Wang
- Department of Pharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China; E-mail:
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7
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Qi RH, Chen Y, Guo ZL, Zhang F, Fang Z, Huang K, Yu HN, Wang YP. Identification and characterization of two novel cathelicidins from the frog Odorrana livida. Zool Res 2018; 40:94-101. [PMID: 30127328 PMCID: PMC6378563 DOI: 10.24272/j.issn.2095-8137.2018.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Antimicrobial peptides (AMPs) are a group of gene-encoded small peptides that play pivotal roles in the host immune system of multicellular organisms. Cathelicidins are an important family of AMPs that exclusively exist in vertebrates. Many cathelicidins have been identified from mammals, birds, reptiles and fish. To date, however, cathelicidins from amphibians are poorly understood. In the present study, two novel cathelicidins (OL-CATH1 and 2) were identified and studied from the odorous frog Odorrana livida. Firstly, the cDNAs encoding the OL-CATHs (780 and 735 bp in length, respectively) were successfully cloned from a lung cDNA library constructed for the frog. Multi-sequence alignment was carried out to analyze differences between the precursors of the OL-CATHs and other representative cathelicidins. Mature peptide sequences of OL-CATH1 and 2 were predicted (33 amino acid residues) and their secondary structures were determined (OL-CATH1 showed a random-coil conformation and OL-CATH2 demonstrated a-helical conformation). Furthermore, OL-CATH1 and 2 were chemically synthesized and their in vitro functions were determined. Antimicrobial and bacterial killing kinetic analyses indicated that OL-CATH2 demonstrated relatively moderate and rapid antimicrobial potency and exhibited strong anti-inflammatory activity. At very low concentrations (10 μg/mL), OL-CATH2 significantly inhibited the lipopolysaccharide (LPS)-induced transcription and production of pro-inflammatory cytokines TNF-a, IL-1b and IL-6 in mouse peritoneal macrophages. In contrast, OL-CATH1 did not exhibit any detectable antimicrobial or anti-inflammatory activities. Overall, identification of these OL-CATHs from O. livida enriches our understanding of the functions of cathelicidins in the amphibian immune system. The potent antimicrobial and anti-inflammatory activities of OL-CATH2 highlight its potential as a novel candidate in anti-infective drug development.
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Affiliation(s)
- Ruo-Han Qi
- College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China
| | - Yan Chen
- College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China
| | - Zhi-Lai Guo
- College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China
| | - Fen Zhang
- College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China
| | - Zheng Fang
- College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China
| | - Kai Huang
- School of Biology & Basic Medical Sciences, Medical College, Soochow University, Suzhou Jiangsu 215123, China
| | - Hai-Ning Yu
- Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian Liaoning 116023, China; E-mail:
| | - Yi-Peng Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou Jiangsu 215123, China; E-mail:
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8
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Pei J, Feng Z, Ren T, Jin W, Li X, Chen D, Tao Y, Dang J. Selectively screen the antibacterial peptide from the hydrolysates of highland barley. Eng Life Sci 2017; 18:48-54. [PMID: 32624860 DOI: 10.1002/elsc.201700118] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 09/17/2017] [Accepted: 09/25/2017] [Indexed: 12/20/2022] Open
Abstract
Highland barley is one of the most important industrial crops in Tibetan plateau. Previous research indicated that highland barley has many medical functions. In this work, the antibacterial abilities of highland barley were investigated. The protein solutions hydrolyzed by trypsin for 4 h exhibited the highest antibacterial activity. An antibacterial peptide, barleycin, was screened and purified by magnetic liposome extraction combining with the protein profiles of reversed-phase high-performance liquid chromatography (RP-HPLC). Structure, characterization, and safety evaluation of barleycin were further investigated. Amino acids sequence was determined as Lys-Ile-Ile-Ile-Pro-Pro-Leu-Phe-His by N-sequencing. Circular dichroism spectra indicated the a-helix conformation of barleycin. The activity spectrum included Bacillus subtilis, Staphylcoccus aureus, Listeria innocua and Escherichia coli and the MICs were from 4 to 16 μg/mL. Safety evaluations with cytotoxicity and hemolytic suggested this antibacterial peptide could be considered as safe at MICs. Finally, mode of action of barleycin on sensitive cells was primarily studied. The results suggested the damage of cell membrane.
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Affiliation(s)
- Jinjin Pei
- Shaanxi Key Laboratory of Biology and Bioresources Shaanxi University of Technology Hanzhogn Shaanxi P. R. China.,Key laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology Chinese Academy of Sciences Xining P. R. China.,Qinghai Key Laboratory of Tibetan Medicine Research Xining P. R. China
| | - Zhenzhen Feng
- Shaanxi Key Laboratory of Biology and Bioresources Shaanxi University of Technology Hanzhogn Shaanxi P. R. China
| | - Ting Ren
- Shaanxi Key Laboratory of Biology and Bioresources Shaanxi University of Technology Hanzhogn Shaanxi P. R. China
| | - Wengang Jin
- Shaanxi Key Laboratory of Biology and Bioresources Shaanxi University of Technology Hanzhogn Shaanxi P. R. China
| | - Xinsheng Li
- Shaanxi Key Laboratory of Biology and Bioresources Shaanxi University of Technology Hanzhogn Shaanxi P. R. China
| | - Dejing Chen
- Shaanxi Key Laboratory of Biology and Bioresources Shaanxi University of Technology Hanzhogn Shaanxi P. R. China
| | - Yanduo Tao
- Key laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology Chinese Academy of Sciences Xining P. R. China.,Qinghai Key Laboratory of Tibetan Medicine Research Xining P. R. China
| | - Jun Dang
- Key laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology Chinese Academy of Sciences Xining P. R. China.,Qinghai Key Laboratory of Tibetan Medicine Research Xining P. R. China
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9
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Pei J, Jiang L. Antimicrobial peptide from mucus of Andrias davidianus : screening and purification by magnetic cell membrane separation technique. Int J Antimicrob Agents 2017; 50:41-46. [DOI: 10.1016/j.ijantimicag.2017.02.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 01/25/2017] [Accepted: 02/10/2017] [Indexed: 10/19/2022]
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10
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Dong BJ, Zhan ZG, Zheng RQ, Chen W, Min JJ. cDNA cloning and functional characterisation of four antimicrobial peptides from Paa spinosa. ACTA ACUST UNITED AC 2015; 70:251-6. [PMID: 26461841 DOI: 10.1515/znc-2015-4220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Accepted: 09/14/2015] [Indexed: 11/15/2022]
Abstract
Antimicrobial peptides (AMPs) are small peptides found in many organisms defending themselves against pathogens. AMPs form the first line of host defence against pathogenic infections and are key components of the innate immune system of amphibians. In the current study, cDNAs of precursors of four novel antimicrobial peptides in the skin of Paa spinosa were cloned and sequenced using the 3'-RACE technique. Mature peptides, named spinosan A-D, encoded by the cDNAs were chemically synthesized and their chemical properties were predicted. The antimicrobial, antioxidative, cyotoxic and haemolytic activities of these four AMPs were determined. While the synthesised spinosans A-C exhibited no activity towards any of the bacterial strains tested, spinosan-D exhibited weak but broad-spectrum antimicrobial activities against Gram-positive and Gram-negative bacteria. All peptides were weakly haemolytic towards rabbit erythrocytes, had a strong antioxidative activity, and a low cytotoxic activity against HeLa cells. These findings provide helpful insights that may be useful in the future design of anti-infective peptide agents.
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Host Defense Peptides from Asian Frogs as Potential Clinical Therapies. Antibiotics (Basel) 2015; 4:136-59. [PMID: 27025618 PMCID: PMC4790330 DOI: 10.3390/antibiotics4020136] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 02/28/2015] [Accepted: 03/04/2015] [Indexed: 01/12/2023] Open
Abstract
Host defense peptides (HDPs) are currently major focal points of medical research as infectious microbes are gaining resistance to existing drugs. They are effective against multi-drug resistant pathogens due to their unique primary target, biological membranes, and their peculiar mode of action. Even though HDPs from 60 Asian frog species belonging to 15 genera have been characterized, research into these peptides is at a very early stage. The purpose of this review is to showcase the status of peptide research in Asia. Here we provide a summary of HDPs from Asian frogs.
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Xu X, Lai R. The chemistry and biological activities of peptides from amphibian skin secretions. Chem Rev 2015; 115:1760-846. [PMID: 25594509 DOI: 10.1021/cr4006704] [Citation(s) in RCA: 233] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Xueqing Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology , Kunming 650223, Yunnan, China
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Hu Y, Xu S, Hu Y, Guo C, Meng H, Li J, Liu J, Wang H. Diverse Families of Antimicrobial Peptides Isolated from Skin Secretions of Three Species of East Asian Frogs,Babina daunchina,Babina adenopleura, andRana omeimontis(Ranidae). Zoolog Sci 2014; 31:438-44. [DOI: 10.2108/zs140014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Hu Y, Yu Z, Xu S, Hu Y, Guo C, Li F, Li J, Liu J, Wang H. Peptidomic analysis of antimicrobial peptides in skin secretions of Amolops mantzorum. Zoolog Sci 2014; 31:143-51. [PMID: 24601776 DOI: 10.2108/zsj.31.143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Amphibian skin secretions contain abundant bioactive peptides that are valuable natural resources for human beings. However, many amphibians are disappearing from the world, making relevant scientific studies even more important. In this study, 24 cDNA sequences encoding antimicrobial peptide (AMP) precursors were initially cloned by screening a cDNA library derived from the skin of the Sichuan torrent frog, Amolops mantzorum. Eighteen mature AMPs belonging to 11 different families were deduced from these cDNA clones. Biological function was confirmed in each family of these AMPs. Some of them were purified from the skin secretions, and their molecular structures were determined by Edman degradation. Liquid chromatography in conjunction with tandem mass spectrometry (LC-MS/MS)-based peptidomics was used to further confirm the actual presence and characteristics of mature AMPs in the skin secretions of A. mantzorum. Incomplete tryptic digestion and gas-phase fractionation (GPF) analysis were used to increase the peptidome coverage and reproducibility of peptide ion selection.
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Affiliation(s)
- Yuhong Hu
- 1 Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
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Identification of multiple antimicrobial peptides from the skin of fine-spined frog, Hylarana spinulosa (Ranidae). Biochimie 2013; 95:2429-36. [DOI: 10.1016/j.biochi.2013.09.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Accepted: 09/04/2013] [Indexed: 11/19/2022]
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Yang X, Xia J, Yu Z, Hu Y, Li F, Meng H, Yang S, Liu J, Wang H. Characterization of diverse antimicrobial peptides in skin secretions of Chungan torrent frog Amolops chunganensis. Peptides 2012; 38:41-53. [PMID: 22951323 DOI: 10.1016/j.peptides.2012.08.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 08/10/2012] [Accepted: 08/10/2012] [Indexed: 12/27/2022]
Abstract
We have cloned, synthesized, and characterized 11 novel antimicrobial peptides from a skin derived cDNA library of the Chungan torrent frog, Amolops chunganensis. Seven of the 11 antimicrobial peptides were present in authentic A. chunganensis skin secretions. Sequence analysis indicated that the 11 peptides belonged to the temporin, esculentin-2, palustrin-2, brevinin-1, and brevinin-2 families. The peptides displayed potent antimicrobial activities against several strains of microorganisms. One peptide, brevinin-1CG5, demonstrated antimicrobial activity against all tested Gram-positive and Gram-negative bacteria and fungi, and showed high antimicrobial potency (MIC=0.6 μM) against Gram-positive bacterium Rhodococcus rhodochrous. Some peptides also demonstrated weak hemolytic activity against human erythrocytes in vitro. Phylogenetic analysis based on the amino acid sequences of brevinin-1, brevinin-2, and esculentin-2 peptides from family Ranidae confirmed that the current taxonomic status of A. chunganensis is correct.
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Affiliation(s)
- Xiaohong Yang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
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