1
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Rooney J, Rivera-de-Torre E, Li R, Mclean K, Price DR, Nisbet AJ, Laustsen AH, Jenkins TP, Hofmann A, Bakshi S, Zarkan A, Cantacessi C. Structural and functional analyses of nematode-derived antimicrobial peptides support the occurrence of direct mechanisms of worm-microbiota interactions. Comput Struct Biotechnol J 2024; 23:1522-1533. [PMID: 38633385 PMCID: PMC11021794 DOI: 10.1016/j.csbj.2024.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
The complex relationships between gastrointestinal (GI) nematodes and the host gut microbiota have been implicated in key aspects of helminth disease and infection outcomes. Nevertheless, the direct and indirect mechanisms governing these interactions are, thus far, largely unknown. In this proof-of-concept study, we demonstrate that the excretory-secretory products (ESPs) and extracellular vesicles (EVs) of key GI nematodes contain peptides that, when recombinantly expressed, exert antimicrobial activity in vitro against Bacillus subtilis. In particular, using time-lapse microfluidics microscopy, we demonstrate that exposure of B. subtilis to a recombinant saposin-domain containing peptide from the 'brown stomach worm', Teladorsagia circumcincta, and a metridin-like ShK toxin from the 'barber's pole worm', Haemonchus contortus, results in cell lysis and significantly reduced growth rates. Data from this study support the hypothesis that GI nematodes may modulate the composition of the vertebrate gut microbiota directly via the secretion of antimicrobial peptides, and pave the way for future investigations aimed at deciphering the impact of such changes on the pathophysiology of GI helminth infection and disease.
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Affiliation(s)
- James Rooney
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | | | - Ruizhe Li
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
| | - Kevin Mclean
- Moredun Research Institute, Penicuik Midlothian, United Kingdom
| | | | | | - Andreas H. Laustsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Timothy P. Jenkins
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Andreas Hofmann
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Kulmbach, Germany
- Melbourne Veterinary School, Faculty of Science, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Somenath Bakshi
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
| | - Ashraf Zarkan
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Cinzia Cantacessi
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
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2
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Cauquil L, Beaumont M, Schmaltz-Panneau B, Liaubet L, Lippi Y, Naylies C, Bluy L, Poli M, Gress L, Lencina C, Duranthon V, Combes S. Coprophagia in early life tunes expression of immune genes after weaning in rabbit ileum. Sci Rep 2024; 14:8898. [PMID: 38632468 DOI: 10.1038/s41598-024-59591-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 04/12/2024] [Indexed: 04/19/2024] Open
Abstract
Coprophagia by suckling rabbits, i.e. ingestion of feces from their mother, reduces mortality after weaning. We hypothesized that this beneficial effect of coprophagia is immune-mediated at the intestinal level. Therefore, this study investigated immune development after weaning by analyzing the ileal transcriptome at day 35 and 49 in rabbits with differential access to coprophagia in early life. Rabbit pups had access between day 1 and 15 to (i) no feces (NF) or (ii) feces from unrelated does (Foreign Feces, FF) or (iii) feces from unrelated does treated with antibiotics (FFab). 350 genes were differentially expressed between day 35 and day 49 in suckling rabbits with access to coprophagia. These genes coded for antimicrobial peptides, a mucin, cytokines and chemokines, pattern recognition receptors, proteins involved in immunoglobulin A secretion and in interferon signaling pathway. Strikingly, prevention of coprophagia or access to feces from antibiotic-treated does in early life blunted immune development between day 35 et 49 in the ileum of rabbits. Thus, coprophagia might be crucial for the maturation of intestinal immunity in rabbits and could explain why this behavior improves survival.
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Affiliation(s)
- L Cauquil
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France
| | - M Beaumont
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France
| | - B Schmaltz-Panneau
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - L Liaubet
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France
| | - Y Lippi
- Toxalim, Université de Toulouse, INRAE, ENVT, INP-Purpan, Toulouse, France
| | - C Naylies
- Toxalim, Université de Toulouse, INRAE, ENVT, INP-Purpan, Toulouse, France
| | - L Bluy
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France
| | - M Poli
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France
| | - L Gress
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France
| | - C Lencina
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France
| | - V Duranthon
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - S Combes
- GenPhySE, Université de Toulouse, INRAE, ENVT, 31326, Castanet-Tolosan, France.
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3
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Zandawala M, Gera J. Leptin- and cytokine-like unpaired signaling in Drosophila. Mol Cell Endocrinol 2024; 584:112165. [PMID: 38266772 DOI: 10.1016/j.mce.2024.112165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/13/2024] [Accepted: 01/19/2024] [Indexed: 01/26/2024]
Abstract
Animals have evolved a multitude of signaling pathways that enable them to orchestrate diverse physiological processes to tightly regulate systemic homeostasis. This signaling is mediated by various families of peptide hormones and cytokines that are conserved across the animal kingdom. In this review, we primarily focus on the unpaired (Upd) family of proteins in Drosophila which are evolutionarily related to mammalian leptin and the cytokine interleukin 6. We summarize expression patterns of Upd in Drosophila and discuss the parallels in structure, signaling pathway, and functions between Upd and their mammalian counterparts. In particular, we focus on the roles of Upd in governing metabolic homeostasis, growth and development, and immune responses. We aim to stimulate future studies on leptin-like signaling in other phyla which can help bridge the evolutionary gap between insect Upd and vertebrate leptin and cytokines like interleukin 6.
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Affiliation(s)
- Meet Zandawala
- Neurobiology and Genetics, Theodor-Boveri Institute, Biocenter, University of Würzburg, 97074, Würzburg, Germany; Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV, 89557, USA.
| | - Jayati Gera
- Neurobiology and Genetics, Theodor-Boveri Institute, Biocenter, University of Würzburg, 97074, Würzburg, Germany
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4
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Fang P, Yu S, Ma X, Hou L, Li T, Gao K, Wang Y, Sun Q, Shang L, Liu Q, Nie M, Yang J. Applications of tandem mass spectrometry (MS/MS) in antimicrobial peptides field: Current state and new applications. Heliyon 2024; 10:e28484. [PMID: 38601527 PMCID: PMC11004759 DOI: 10.1016/j.heliyon.2024.e28484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/12/2024] Open
Abstract
Antimicrobial peptides (AMPs) constitute a group of small molecular peptides that exhibit a wide range of antimicrobial activity. These peptides are abundantly present in the innate immune system of various organisms. Given the rise of multidrug-resistant bacteria, microbiological studies have identified AMPs as potential natural antibiotics. In the context of antimicrobial resistance across various human pathogens, AMPs hold considerable promise for clinical applications. However, numerous challenges exist in the detection of AMPs, particularly by immunological and molecular biological methods, especially when studying of newly discovered AMPs in proteomics. This review outlines the current status of AMPs research and the strategies employed in their development, considering resent discoveries and methodologies. Subsequently, we focus on the advanced techniques of mass spectrometry for the quantification of AMPs in diverse samples, and analyzes their application, advantages, and limitations. Additionally, we propose suggestions for the future development of tandem mass spectrometry for the detection of AMPs.
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Affiliation(s)
- Panpan Fang
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
| | - Songlin Yu
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Xiaoli Ma
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Lian Hou
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Tiewei Li
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
| | - Kaijie Gao
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
| | - Yingyuan Wang
- Department of Neonatal Intensive Care Unit, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
| | - Qianqian Sun
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
| | - Lujun Shang
- Department of Laboratory Medicine, Guizhou Provincial People's Hospital, Guiyang, 550004, PR China
| | - Qianqian Liu
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
| | - Manjie Nie
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
| | - Junmei Yang
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, PR China
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Zhu S, Zhang X, Xu K, Liang J, Wang W, Zeng L, Xu K. Loss of NLRP6 expression increases the severity of intestinal injury after syngeneic hematopoietic stem cell transplantation. Ann Hematol 2024:10.1007/s00277-024-05745-5. [PMID: 38607553 DOI: 10.1007/s00277-024-05745-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 04/03/2024] [Indexed: 04/13/2024]
Abstract
NLRP6 plays a crucial role in maintaining intestinal homeostasis by regulating the interaction between the intestinal mucosa and the microbiota. However, the impact of NLRP6 deficiency on intestinal damage following hematopoietic stem cell transplantation (HSCT) remains poorly understood. In this study, we established a syngeneic HSCT mouse model using C57BL/6 mice as donors and NLRP6-/- or C57BL/6 mice as recipients. Our findings revealed that NLRP6 deficiency had minimal influence on peripheral blood cell counts and splenic immune cell proportions in transplanted mice. However, it exacerbated pathological changes in the small intestine on day 14 post-transplantation, accompanied by increased proportions of macrophages, dendritic cells, and neutrophils. Furthermore, the NLRP6 deficiency resulted in elevated expression of MPO and CD11b, while reducing the levels mature caspase-1 and mature IL-1β in the intestine. Moreover, the NLRP6 deficiency disturbed the expression of apoptosis-related molecules and decreased the tight junction protein occludin. Notably, recipient mice with NLRP6 deficiency exhibited lower mRNA expression levels of antimicrobial genes, such as Reg3γ and Pla2g2a. The short-term increase in inflammatory cell infiltration caused by NLRP6 deficiency was associated with intestinal damage, increased apoptosis, reduced expression of antimicrobial peptides, and impaired intestinal repair. Taken together, our findings demonstrate that the loss of NLRP6 exacerbates post-transplantation intestinal damage in recipient mice.
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Affiliation(s)
- Shengyun Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China
| | - Xue Zhang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China
| | - Kairen Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Jing Liang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Weiwei Wang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Lingyu Zeng
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China
| | - Kailin Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China.
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China.
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China.
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6
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Viera Herrera C, O'Connor PM, Ratrey P, Paul Ross R, Hill C, Hudson SP. Anionic liposome formulation for oral delivery of thuricin CD, a potential antimicrobial peptide therapeutic. Int J Pharm 2024; 654:123918. [PMID: 38401875 PMCID: PMC7615751 DOI: 10.1016/j.ijpharm.2024.123918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/30/2024] [Accepted: 02/16/2024] [Indexed: 02/26/2024]
Abstract
Thuricin CD is a two-peptide antimicrobial produced by Bacillus thuringiensis. Unlike previous antibiotics, it has shown narrow spectrum activity against Clostridioides difficile, a bacterium capable of causing infectious disease in the colon. However, peptide antibiotics have stability, solubility, and permeability problems that can affect their performance in vivo. This work focuses on the bioactivity and bioavailability of thuricin CD with a view to developing a formulation for delivery of active thuricin CD peptides through the gastrointestinal tract (GIT) for local delivery in the colon. The results indicate that thuricin CD is active at low concentrations only when both peptides are present. While thuricin CD was degraded by proteases and was unstable and poorly soluble in gastric fluid, it showed increased solubility in intestinal fluid, probably due to micelle encapsulation. Based on this, thuricin CD was encapsulated in anionic liposomes, which showed increased activity compared to the free peptide, maintained activity after exposure to pepsin in gastric fluid and intestinal fluid, was stable in suspension for over 21 days at room temperature and for 60 days at 4 °C, and exhibited no toxicity to epithelial intestinal cells. These findings suggest that an anionic lipid-based nano formulation may be a promising approach for local oral delivery of thuricin CD.
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Affiliation(s)
- Camila Viera Herrera
- Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland
| | - Paula M O'Connor
- Food Biosciences, Teagasc, Moorepark Food Research Centre, Fermoy, Co. Cork, Ireland; APC Microbiome Ireland Cork, Cork, Ireland
| | - Poonam Ratrey
- Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland
| | - R Paul Ross
- APC Microbiome Ireland Cork, Cork, Ireland; School of Microbiology, University College Cork, College Road, Cork, Ireland
| | - Colin Hill
- APC Microbiome Ireland Cork, Cork, Ireland; School of Microbiology, University College Cork, College Road, Cork, Ireland
| | - Sarah P Hudson
- Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland.
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7
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Hixson B, Huot L, Morejon B, Yang X, Nagy P, Michel K, Buchon N. The transcriptional response in mosquitoes distinguishes between fungi and bacteria but not Gram types. BMC Genomics 2024; 25:353. [PMID: 38594632 PMCID: PMC11003161 DOI: 10.1186/s12864-024-10153-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/22/2024] [Indexed: 04/11/2024] Open
Abstract
Mosquitoes are prolific vectors of human pathogens, therefore a clear and accurate understanding of the organization of their antimicrobial defenses is crucial for informing the development of transmission control strategies. The canonical infection response in insects, as described in the insect model Drosophila melanogaster, is pathogen type-dependent, with distinct stereotypical responses to Gram-negative bacteria and Gram-positive bacteria/fungi mediated by the activation of the Imd and Toll pathways, respectively. To determine whether this pathogen-specific discrimination is shared by mosquitoes, we used RNAseq to capture the genome-wide transcriptional response of Aedes aegypti and Anopheles gambiae (s.l.) to systemic infection with Gram-negative bacteria, Gram-positive bacteria, yeasts, and filamentous fungi, as well as challenge with heat-killed Gram-negative, Gram-positive, and fungal pathogens. From the resulting data, we found that Ae. aegypti and An. gambiae both mount a core response to all categories of infection, and this response is highly conserved between the two species with respect to both function and orthology. When we compared the transcriptomes of mosquitoes infected with different types of bacteria, we observed that the intensity of the transcriptional response was correlated with both the virulence and growth rate of the infecting pathogen. Exhaustive comparisons of the transcriptomes of Gram-negative-challenged versus Gram-positive-challenged mosquitoes yielded no difference in either species. In Ae. aegypti, however, we identified transcriptional signatures specific to bacterial infection and to fungal infection. The bacterial infection response was dominated by the expression of defensins and cecropins, while the fungal infection response included the disproportionate upregulation of an uncharacterized family of glycine-rich proteins. These signatures were also observed in Ae. aegypti challenged with heat-killed bacteria and fungi, indicating that this species can discriminate between molecular patterns that are specific to bacteria and to fungi.
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Affiliation(s)
- Bretta Hixson
- Cornell Institute of Host-Microbe Interactions and Disease, Department of Entomology, Cornell University, Ithaca, NY, 14853, USA
| | - Louise Huot
- Cornell Institute of Host-Microbe Interactions and Disease, Department of Entomology, Cornell University, Ithaca, NY, 14853, USA
| | - Bianca Morejon
- Division of Biology, Kansas State University, Manhattan, KS, 66506, USA
| | - Xiaowei Yang
- Cornell Institute of Host-Microbe Interactions and Disease, Department of Entomology, Cornell University, Ithaca, NY, 14853, USA
- Current address: State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute for Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Peter Nagy
- Cornell Institute of Host-Microbe Interactions and Disease, Department of Entomology, Cornell University, Ithaca, NY, 14853, USA
| | - Kristin Michel
- Division of Biology, Kansas State University, Manhattan, KS, 66506, USA
| | - Nicolas Buchon
- Cornell Institute of Host-Microbe Interactions and Disease, Department of Entomology, Cornell University, Ithaca, NY, 14853, USA.
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8
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Niknam Hamidabad M, Watson NA, Wright LN, Mansbach RA. In Silico Study of the Early Stages of Aggregation of β Sheet-forming Antimicrobial Peptide GL13K. Chembiochem 2024:e202400088. [PMID: 38572930 DOI: 10.1002/cbic.202400088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/02/2024] [Accepted: 04/02/2024] [Indexed: 04/05/2024]
Abstract
Antimicrobial peptides (AMPs) are of growing interest as potential candidates that may offer more resilience against antimicrobial resistance than traditional antibiotic agents. In this article, we perform the first in silico study of the synthetic ß sheet-forming AMP GL13K. Through atomistic simulations of single and multi-peptide systems under different conditions, we are able to shine a light on the short timescales of early aggregation. We find that isolated peptide conformations are primarily dictated by sequence rather than charge, whereas changing charge has a significant impact on the conformational free energy landscape of multi-peptide systems. We demonstrate that the loss of charge-charge repulsion is a sufficient minimal model for experimentally observed aggregation. Overall, our work explores the molecular biophysical underpinnings of the first stages of aggregation of a unique AMP, laying necessary groundwork for its further development as an antibiotic candidate.
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Affiliation(s)
| | - Natalya A Watson
- Concordia University, Physics, 7141 Sherbrooke St W, H4B 1R6, Montreal, CANADA
| | - Lindsay N Wright
- Concordia University, Physics, 7141 Sherbrooke St W, H4B 1R6, Montreal, CANADA
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9
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Liang Q, Liu Z, Liang Z, Zhu C, Li D, Kong Q, Mou H. Development strategies and application of antimicrobial peptides as future alternatives to in-feed antibiotics. Sci Total Environ 2024; 927:172150. [PMID: 38580107 DOI: 10.1016/j.scitotenv.2024.172150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/14/2024] [Accepted: 03/30/2024] [Indexed: 04/07/2024]
Abstract
The use of in-feed antibiotics has been widely restricted due to the significant environmental pollution and food safety concerns they have caused. Antimicrobial peptides (AMPs) have attracted widespread attention as potential future alternatives to in-feed antibiotics owing to their demonstrated antimicrobial activity and environment friendly characteristics. However, the challenges of weak bioactivity, immature stability, and low production yields of natural AMPs impede practical application in the feed industry. To address these problems, efforts have been made to develop strategies for approaching the AMPs with enhanced properties. Herein, we summarize approaches to improving the properties of AMPs as potential alternatives to in-feed antibiotics, mainly including optimization of structural parameters, sequence modification, selection of microbial hosts, fusion expression, and industrially fermentation control. Additionally, the potential for application of AMPs in animal husbandry is discussed. This comprehensive review lays a strong theoretical foundation for the development of in-feed AMPs to achieve the public health globally.
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Affiliation(s)
- Qingping Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Zhemin Liu
- Fundamental Science R&D Center of Vazyme Biotech Co. Ltd., Nanjing 210000, China
| | - Ziyu Liang
- Section of Neurobiology, Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA
| | - Changliang Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Dongyu Li
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Qing Kong
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China.
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10
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Wang Z, Chen X, Yan L, Wang W, Zheng P, Mohammadreza A, Liu Q. Antimicrobial peptides in bone regeneration: mechanism and potential. Expert Opin Biol Ther 2024:1-20. [PMID: 38567503 DOI: 10.1080/14712598.2024.2337239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Abstract
INTRODUCTION Antimicrobial peptides (AMPs) are small-molecule peptides with a unique antimicrobial mechanism. Other notable biological activities of AMPs, including anti-inflammatory, angiogenesis, and bone formation effects, have recently received widespread attention. These remarkable bioactivities, combined with the unique antimicrobial mechanism of action of AMPs, have led to their increasingly important role in bone regeneration. AREAS COVERED In this review, on the one hand, we aimed to summarize information about the AMPs that are currently used for bone regeneration by reviewing published literature in the PubMed database. On the other hand, we also highlight some AMPs with potential roles in bone regeneration and their possible mechanisms of action. EXPERT OPINION The translation of AMPs to the clinic still faces many problems, but their unique antimicrobial mechanisms and other conspicuous biological activities suggest great potential. An in-depth understanding of the structure and mechanism of action of AMPs will help us to subsequently combine AMPs with different carrier systems and perform structural modifications to reduce toxicity and achieve stable release, which may be a key strategy for facilitating the translation of AMPs to the clinic.
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Affiliation(s)
- ZhiCheng Wang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of Stomatology, Southern Medical University, Guangzhou, China
| | - XiaoMan Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of Stomatology, Southern Medical University, Guangzhou, China
| | - Liang Yan
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of Stomatology, Southern Medical University, Guangzhou, China
| | - WenJie Wang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of Stomatology, Southern Medical University, Guangzhou, China
| | - PeiJia Zheng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of Stomatology, Southern Medical University, Guangzhou, China
| | - Atashbahar Mohammadreza
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of International Education, Southern Medical University, Guangzhou, China
| | - Qi Liu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of Stomatology, Southern Medical University, Guangzhou, China
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11
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Engel DR, Wagenlehner FME, Shevchuk O. Scientific Advances in Understanding the Pathogenesis, Diagnosis, and Prevention of Urinary Tract Infection in the Past 10 Years. Infect Dis Clin North Am 2024:S0891-5520(24)00004-7. [PMID: 38575493 DOI: 10.1016/j.idc.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Urinary tract infection (UTI) is a very common disease that is accompanied by various complications in the affected person. UTI triggers diverse inflammatory reactions locally in the infected urinary bladder and kidney, causing tissue destruction and organ failure. Moreover, systemic responses in the entire body carry the risk of urosepsis with far-reaching consequences. Understanding the cell-, organ-, and systemic mechanisms in UTI are crucial for prevention, early intervention, and current therapeutic approaches. This review summarizes the scientific advances over the last 10 years concerning pathogenesis, prevention, rapid diagnosis, and new treatment approaches. We also highlight the impact of the immune system and potential new therapies to reduce progressive and recurrent UTI.
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Affiliation(s)
- Daniel R Engel
- Department of Immunodynamics, University Duisburg-Essen, University Hospital Essen, Institute of Experimental Immunology and Imaging, Hufelandstraße 55, 45147 Essen, Germany
| | - Florian M E Wagenlehner
- Justus-Liebig University Giessen, Clinic for Urology, Paediatric Urology and Andrology, Rudolf-Buchheim Straße 7, 35392 Giessen, Germany
| | - Olga Shevchuk
- Department of Immunodynamics, University Duisburg-Essen, University Hospital Essen, Institute of Experimental Immunology and Imaging, Hufelandstraße 55, 45147 Essen, Germany.
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12
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Bui Thi Phuong H, Doan Ngan H, Le Huy B, Vu Dinh H, Luong Xuan H. The amphipathic design in helical antimicrobial peptides. ChemMedChem 2024; 19:e202300480. [PMID: 38408263 DOI: 10.1002/cmdc.202300480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/18/2023] [Indexed: 02/28/2024]
Abstract
Amphipathicity is a critical characteristic of helical antimicrobial peptides (AMPs). The hydrophilic region, primarily composed of cationic residues, plays a pivotal role in the initial binding to negatively charged components on bacterial membranes through electrostatic interactions. Subsequently, the hydrophobic region interacts with hydrophobic components, inducing membrane perturbation, ultimately leading to cell death, or inhibiting intracellular function. Due to the extensive diversity of natural and synthetic AMPs with regard to the design of amphipathicity, it is complicated to study the structure-activity relationships. Therefore, this work aims to categorize the common amphipathic design and investigate their impact on the biological properties of AMPs. Besides, the connection between current structural modification approaches and amphipathic styles was also discussed.
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Affiliation(s)
| | - Hoa Doan Ngan
- Faculty of Medical Technology, PHENIKAA University, Hanoi, 12116, Vietnam
| | - Binh Le Huy
- Center for High Technology Development, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Hanoi, 11307, Vietnam
- School of Chemical Engineering -, Hanọi University of Science and Technology, 1 Dai Co Viet, Hai Ba Trung, Hanoi, 11615, Vietnam
| | - Hoang Vu Dinh
- School of Chemical Engineering -, Hanọi University of Science and Technology, 1 Dai Co Viet, Hai Ba Trung, Hanoi, 11615, Vietnam
| | - Huy Luong Xuan
- Faculty of Pharmacy, PHENIKAA University, Hanoi, 12116, Vietnam
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13
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Johny LC, Kumar BSG, Rao SJA, Suresh PV. Anti-listerial peptides from a marine Bacillus velezensis FTL7: production optimization, characterizations and molecular docking studies. 3 Biotech 2024; 14:105. [PMID: 38464616 PMCID: PMC10923759 DOI: 10.1007/s13205-024-03944-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 01/28/2024] [Indexed: 03/12/2024] Open
Abstract
Antimicrobial peptides (AMPs) with potent anti-listerial activity were characterized from a novel marine Bacillus velezensis FTL7. A Box-Behnken statistical experimental design was used to study the combined impact of culture conditions on the production of AMPs by B. velezensis FTL7. The conditions optimized by statistical experimental design were 34.5 °C incubation temperature, 23 h incubation time, and 7.6 initial pH of the medium. AMP purification was performed by ammonium sulphate fractionation and butanol extraction followed by reversed-phase C18 solid-phase extraction. Tricine-SDS-PAGE analysis revealed a peptide with a molecular mass of ~ 6.5 kDa in an active AMPs fraction, whereas the mass spectrometry (MS) analysis showed the presence of AMPs in the mass range of 1-1.6 kDa, along with a 6.5 kDa peptide. Both MS and MS/MS analysis confirmed the AMPs as lipopeptides including surfactin, fengycins and iturin A and a circular bacteriocin amylocyclicin. The minimum inhibitory concentration of these AMPs against L. monocytogenes Scott A was 2.5 µg/mL. Further, the in-silico docking studies showed that the AMPs from B. velezensis FTL7 have high binding energy and stable binding patterns towards L. monocytogenes target proteins. Thus, this new combination of AMPs can serve as an effective food bio-preservative. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03944-5.
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Affiliation(s)
- Lidiya C. Johny
- Meat and Marine Sciences Department, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - B. S. Gnanesh Kumar
- Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
| | - S. J. Aditya Rao
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
- Kimberlite Chemicals India Pvt. Ltd, KIADB III Phase, Doddaballapur, Bangalore, 561203 India
| | - P. V. Suresh
- Meat and Marine Sciences Department, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
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14
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Kroneislová G, Macůrková A, Novotná Z, Ježek R, Lovecká P. Antimicrobial activity and properties of de novo design of short synthetic lipopeptides. Folia Microbiol (Praha) 2024; 69:445-457. [PMID: 38277095 PMCID: PMC11003925 DOI: 10.1007/s12223-024-01132-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024]
Abstract
The aim of this article is to introduce the topic of newly designed peptides as well as their biological activity. We designed nine encoded peptides composed of six amino acids. All these peptides were synthesized with C-terminal amidation. To investigate the importance of increased hydrophobicity at the amino end of the peptides, all of them were subsequently synthesized with palmitic or lithocholic acid at the N-terminus. Antimicrobial activity was tested on Gram-positive and Gram-negative bacteria and fungi. Cytotoxicity was measured on HepG2 and HEK 293 T cell cultures. Peptides bearing a hydrophobic group exhibited the best antimicrobial activity. Lipopeptides with palmitic or lithocholic acid (PAL or LCA peptides) at the N-terminus and with C-terminal amidation were highly active against Gram-positive bacteria, especially against strains of Staphylococcus aureus and Candida tropicalis. The LCA peptide SHP 1.3 with the sequence LCA-LVKRAG-NH2, had high efficiency on HepG2 human liver hepatocellular carcinoma cells (97%).
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Affiliation(s)
- Gabriela Kroneislová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemical Technology Prague, Prague, Czech Republic
| | - Anna Macůrková
- Department of Diary, Fat and Cosmetics, Faculty of Food and Biochemical Technology, University of Chemical Technology Prague, Prague, Czech Republic
| | - Zuzana Novotná
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemical Technology Prague, Prague, Czech Republic
| | - Rudolf Ježek
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemical Technology Prague, Prague, Czech Republic
| | - Petra Lovecká
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemical Technology Prague, Prague, Czech Republic.
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15
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Zhang ZL, Meng YQ, Li JJ, Zhang XX, Li JT, Xu JR, Zheng PH, Xian JA, Lu YP. Effects of antimicrobial peptides from dietary Hermetia illucens larvae on the growth, immunity, gene expression, intestinal microbiota and resistance to Aeromonas hydrophila of juvenile red claw crayfish (Cherax quadricarinatus). Fish Shellfish Immunol 2024; 147:109437. [PMID: 38360192 DOI: 10.1016/j.fsi.2024.109437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 02/02/2024] [Accepted: 02/07/2024] [Indexed: 02/17/2024]
Abstract
Antimicrobial peptides (AMPs), which are widely present in animals and plants, have a broad distribution, strong broad-spectrum antibacterial activity, low likelihood of developing drug resistance, high thermal stability and antiviral properties. The present study investigated the effects of adding AMPs from Hermetia illucens larvae on the growth performance, muscle composition, antioxidant capacity, immune response, gene expression, antibacterial ability and intestinal microbiota of Cherax quadricarinatus (red claw crayfish). Five experimental diets were prepared by adding 50 (M1), 100 (M2), 150 (M3) and 200 (M4) mg/kg of crude AMP extract from H. illucens larvae to the basal diet feed, which was also used as the control (M0). After an eight-week feeding experiment, it was discovered that the addition of 100-150 mg/kg of H. illucens larvae AMPs to the feed significantly improved the weight gain rate and specific growth rate of C. quadricarinatus. Furthermore, the addition of H. illucens larvae AMPs to the feed had no significant effect on the moisture content, crude protein, crude fat and ash content of the C. quadricarinatus muscle. The addition of 100-150 mg/kg of H. illucens larvae AMPs in the feed also increased the antioxidant capacity, nonspecific immune enzyme activity and related gene expression levels in C. quadricarinatus, thereby enhancing their antioxidant capacity and immune function. The H. illucens larvae AMPs improved the structure and composition of the intestinal microbiota of C. quadricarinatus, increasing the microbial community diversity of the crayfish gut. Finally, the addition of 100-150 mg/kg of H. illucens larvae AMPs in the feed enhanced the resistance of C. quadricarinatus against Aeromonas hydrophila, improving the survival rate of the crayfish. Based on the aforementioned findings, it is recommended that H. illucens larvae AMPs be incorporated into the C. quadricarinatus feed at a concentration of 100-150 mg/kg.
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Affiliation(s)
- Ze-Long Zhang
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China; Ocean College, Hainan University, Haikou, 570228, China
| | - Yong-Qi Meng
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China; Ocean College, Hainan University, Haikou, 570228, China
| | - Jia-Jun Li
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China
| | - Xiu-Xia Zhang
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China
| | - Jun-Tao Li
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China
| | - Jia-Rui Xu
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China
| | - Pei-Hua Zheng
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China
| | - Jian-An Xian
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China; Ocean College, Hainan University, Haikou, 570228, China.
| | - Yao-Peng Lu
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, China.
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16
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Thomas AM, Antony SP. Marine Antimicrobial Peptides: An Emerging Nightmare to the Life-Threatening Pathogens. Probiotics Antimicrob Proteins 2024; 16:552-578. [PMID: 37022565 DOI: 10.1007/s12602-023-10061-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2023] [Indexed: 04/07/2023]
Abstract
The emergence of multidrug-resistant pathogens due to improper usage of conventional antibiotics has created a global health crisis. Alternatives to antibiotics being an urgent need, the scientific community is forced to search for new antimicrobials. This exploration has led to the discovery of antimicrobial peptides, a group of small peptides occurring in different phyla such as Porifera, Cnidaria, Annelida, Arthropoda, Mollusca, Echinodermata, and Chordata, as a component of their innate immune system. The marine environment, possessing immense diversity of organisms, is undoubtedly one of the richest sources of unique potential antimicrobial peptides. The distinctiveness of marine antimicrobial peptides lies in their broad-spectrum activity, mechanism of action, less cytotoxicity, and high stability, which form the benchmark for developing a potential therapeutic. This review aims to (1) synthesise the available information on the distinctive antimicrobial peptides discovered from marine organisms, particularly over the last decade, and (2) discuss the distinctiveness of marine antimicrobial peptides and their prospects.
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Affiliation(s)
- Anne Maria Thomas
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, 682016, India
| | - Swapna P Antony
- Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, 682016, India.
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17
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Lucas DR, Damica FZ, Toledo EB, Cogo AJD, Okorokova-Façanha AL, Gomes VM, de Oliveira Carvalho A. Bioinspired peptides induce different cell death mechanisms against opportunistic yeasts. Probiotics Antimicrob Proteins 2024; 16:649-672. [PMID: 37076595 PMCID: PMC10115610 DOI: 10.1007/s12602-023-10064-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2023] [Indexed: 04/21/2023]
Abstract
The management of fungal diseases imposes an urgent need for the development of effective antifungal drugs. Among new drug candidates are the antimicrobial peptides, and especially their derivatives. Here, we investigated the molecular mechanism of action of three bioinspired peptides against the opportunistic yeasts Candida tropicalis and Candida albicans. We assessed morphological changes, mitochondrial functionality, chromatin condensation, ROS production, activation of metacaspases, and the occurrence of cell death. Our results indicated that the peptides induced sharply contrasting death kinetics, of 6 h for RR and 3 h for D-RR to C. tropicalis and 1 h for WR to C. albicans. Both peptide-treated yeasts exhibited increased ROS levels, mitochondrial hyperpolarization, cell size reduction, and chromatin condensation. RR and WR induced necrosis in C. tropicalis and C. albicans, but not D-RR in C. tropicalis. The antioxidant ascorbic acid reverted the toxic effect of RR and D-RR, but not WR, suggesting that instead of ROS there is a second signal triggered that leads to yeast death. Our data suggest that RR induced a regulated accidental cell death in C. tropicalis, D-RR induced a programmed cell death metacaspase-independent in C. tropicalis, while WR induced an accidental cell death in C. albicans. Our results were obtained with the LD100 and within the time that the peptides induce the yeast death. Within this temporal frame, our results allow us to gain clarity on the events triggered by the peptide-cell interaction and their temporal order, providing a better understanding of the death process induced by them.
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Affiliation(s)
- Douglas Ribeiro Lucas
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Filipe Zaniratti Damica
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Estefany Braz Toledo
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Antônio Jesus Dorighetto Cogo
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Anna Lvovna Okorokova-Façanha
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Valdirene Moreira Gomes
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - André de Oliveira Carvalho
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil.
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Mulukutla A, Shreshtha R, Kumar Deb V, Chatterjee P, Jain U, Chauhan N. Recent advances in antimicrobial peptide-based therapy. Bioorg Chem 2024; 145:107151. [PMID: 38359706 DOI: 10.1016/j.bioorg.2024.107151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/05/2024] [Accepted: 01/22/2024] [Indexed: 02/17/2024]
Abstract
Antimicrobial peptides (AMPs) are a group of polypeptide chains that have the property to target and kill a myriad of microbial organisms including viruses, bacteria, protists, etc. The first discovered AMP was named gramicidin, an extract of aerobic soil bacteria. Further studies discovered that these peptides are present not only in prokaryotes but in eukaryotes as well. They play a vital role in human innate immunity and wound repair. Consequently, they have maintained a high level of intrigue among scientists in the field of immunology, especially so with the rise of antibiotic-resistant pathogens decreasing the reliability of antibiotics in healthcare. While AMPs have promising potential to substitute for common antibiotics, their use as effective replacements is barred by certain limitations. First, they have the potential to be cytotoxic to human cells. Second, they are unstable in the blood due to action by various proteolytic agents and ions that cause their degradation. This review provides an overview of the mechanism of AMPs, their limitations, and developments in recent years that provide techniques to overcome those limitations. We also discuss the advantages and drawbacks of AMPs as a replacement for antibiotics as compared to other alternatives such as synthetically modified bacteriophages, traditional medicine, and probiotics.
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Affiliation(s)
- Aditya Mulukutla
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Romi Shreshtha
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Vishal Kumar Deb
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Pallabi Chatterjee
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Utkarsh Jain
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Nidhi Chauhan
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India.
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Szarszoń K, Mikołajczyk A, Grelich-Mucha M, Wieczorek R, Matera-Witkiewicz A, Olesiak-Bańska J, Rowińska-Żyrek M, Wątły J. Bioinorganic chemistry of shepherin II complexes helps to fight Candida albicans? J Inorg Biochem 2024; 253:112476. [PMID: 38171045 DOI: 10.1016/j.jinorgbio.2023.112476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/04/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024]
Abstract
The fungal cell wall and cell membrane are an important target for antifungal therapies, and a needle-like cell wall or membrane disruption may be an entirely novel antifungal mode of action. In this work, we show how the coordination of Zn(II) triggers the antifungal properties of shepherin II, a glycine- and histidine-rich antimicrobial peptide from the root of Capsella bursa-pastoris. We analyze Cu(II) and Zn(II) complexes of this peptide using experimental and theoretical methods, such as: mass spectrometry, potentiometry, UV-Vis and CD spectroscopies, AFM imaging, biological activity tests and DFT calculations in order to understand the correlation between their metal binding mode, structure, morphology and biological activity. We observe that Zn(II) coordinates to Shep II and causes a structural change, resulting in fibril formation, what has a pronounced biological consequence - a strong anticandidal activity. This phenomenon was observed neither for the peptide itself, nor for its copper(II) complex. The Zn(II) - shepherin II complex can be considered as a starting point for further anticandidal drug discovery, which is extremely important in the era of increasing antifungal drug resistance.
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Affiliation(s)
- Klaudia Szarszoń
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Aleksandra Mikołajczyk
- Screening of Biological Activity Assays and Collection of Biological Material Laboratory, Wrocław Medical University Biobank, Faculty of Pharmacy, Wrocław Medical University, 50-556 Wrocław, Poland
| | - Manuela Grelich-Mucha
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Robert Wieczorek
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Agnieszka Matera-Witkiewicz
- Screening of Biological Activity Assays and Collection of Biological Material Laboratory, Wrocław Medical University Biobank, Faculty of Pharmacy, Wrocław Medical University, 50-556 Wrocław, Poland
| | - Joanna Olesiak-Bańska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | | | - Joanna Wątły
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland.
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Todorov SD, Ouwehand A. Bacteriocins and Antimicrobial Peptides Symposium, Part of International Probiotic Conference, Prague 18-20 June 2024. Probiotics Antimicrob Proteins 2024; 16:696-697. [PMID: 38324140 DOI: 10.1007/s12602-024-10218-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2024] [Indexed: 02/08/2024]
Abstract
It has become a tradition for the BAMP (Bacteriocins and Antimicrobial Peptides) symposium to be a part of the IPC (International Probiotic Conference). In 2024, IPC/BAMP will be held on the 18th-20th of June in Prague, Czech Republic ( www.probiotic-conference.net ) and will reunite scientists, students, and representatives from industry and regulations agencies from all around the world. The meeting will serve as a platform for the exchange of knowledge and ideas regarding the past, present, and future of beneficial microbes, probiotics, antimicrobials, and proteins, and their influence on a prosperous and healthier future.
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Affiliation(s)
- Svetoslav Dimitrov Todorov
- ProBacLab, Laboratório de Microbiologia de Alimentos, Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- CISAS-Center for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana do Castelo, 4900-347, Viana do Castelo, Portugal.
| | - Arthur Ouwehand
- International Flavors & Fragrances, Health & Biosciences, Sokeritehtaantie 20, 02460, Kantvik, Finland
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21
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Mahto AK, Kanupriya, Kumari S, Yar MS, Dewangan RP. Hydrocarbon stapled temporin-L analogue as potential antibacterial and antiendotoxin agents with enhanced protease stability. Bioorg Chem 2024; 145:107239. [PMID: 38428282 DOI: 10.1016/j.bioorg.2024.107239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/06/2024] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
Antimicrobial resistance (AMR) is a serious global concern and a huge burden on the healthcare system. Antimicrobial peptides (AMPs) are considered as a solution of AMR due to their membrane-lytic and intracellular mode of action and therefore resistance development against AMPs is less frequent. One such AMPs, temporin-L (TL) is a 13-mer peptide reported as a potent and broad-spectrum antibacterial agent with significant immunomodulatory activity. However, TL is toxic to human erythrocytes at their antibacterial concentrations and therefore various analogues were synthesized with potent antimicrobial activity and lower hemolytic activity. In this work, we have selected a non-toxic engineered analogue of TL (eTL) and performed hydrocarbon stapling of amino acid residues at i to i + 4 positions at different part of sequence. The synthesized peptides were investigated against both the gram-positive and gram-negative bacteria as well as methicillin resistant S. aureus, its MIC was measured in the concentrations range of 0.9-15.2 µM. All analogues were found equal or better antibacterial as compared to parent peptide. Interestingly one analogue eTL [5-9] was found to be non-cytotoxic and stable in presence of the human serum. Mode of action studies revealed membrane depolarizing and disruptive mode of action with live MRSA. Further in vivo studies of antimicrobial against MRSA infection and anti-endotoxin activities in mice model revealed potential activity of the stapled peptide analogue. Overall, this reports on stapled analogue of the AMPs highlights an important strategy for the development of new antibacterial therapeutics against AMR.
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Affiliation(s)
- Aman Kumar Mahto
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard (Deemed to be University), New Delhi 110062, India
| | - Kanupriya
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard (Deemed to be University), New Delhi 110062, India
| | - Shalini Kumari
- CSIR-Institute of Genomics and Integrative Biology (IGIB), Sukhdev Vihar, Mathura Road, New Delhi 110025, India
| | - Mohammad Shahar Yar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard (Deemed to be University), New Delhi 110062, India
| | - Rikeshwer Prasad Dewangan
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard (Deemed to be University), New Delhi 110062, India.
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22
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Fan D, Liu X, Ren Y, Luo Z, Li Y, Dong J, Wegner SV, Chen F, Zeng W. Harnessing antimicrobial peptide-coupled photosensitizer to combat drug-resistant biofilm infections through enhanced photodynamic therapy. Acta Pharm Sin B 2024; 14:1759-1771. [PMID: 38572100 PMCID: PMC10985124 DOI: 10.1016/j.apsb.2023.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/18/2023] [Accepted: 12/25/2023] [Indexed: 04/05/2024] Open
Abstract
Bacterial biofilm-associated infection was one of the most serious threats to human health. However, effective drugs for drug-resistance bacteria or biofilms remain rarely reported. Here, we propose an innovative strategy to develop a multifunctional antimicrobial agent with broad-spectrum antibacterial activity by coupling photosensitizers (PSs) with antimicrobial peptides (AMPs). This strategy capitalizes on the ability of PSs to generate reactive oxygen species (ROS) and the membrane-targeting property of AMPs (KRWWKWIRW, a peptide screened by an artificial neural network), synergistically enhancing the antimicrobial activity. In addition, unlike conventional aggregation-caused quenching (ACQ) photosensitizers, aggregation-induced emission (AIE) PSs show stronger fluorescence emission in the aggregated state to help visualize the antibacterial mechanism. In vitro antibacterial experiments demonstrated the excellent killing effects of the developed agent against both Gram-positive (G+) and Gram-negative (G-) bacteria. The bacterial-aggregations induced ability enhanced the photoactivatable antibacterial activity against G- bacteria. Notably, it exhibited a significant effect on destroying MRSA biofilms. Moreover, it also showed remarkable efficacy in treating wound infections in mice in vivo. This multifunctional antimicrobial agent holds significant potential in addressing the challenges posed by bacterial biofilm-associated infections and drug-resistant bacteria.
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Affiliation(s)
- Duoyang Fan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China
| | - Xiaohui Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China
| | - Yueming Ren
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
- Sir William Dunn School of Pathology, University of Oxford, Oxford OX1 3RE, UK
| | - Ziheng Luo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China
| | - Yanbing Li
- Xiangya Hospital of Central South University, Changsha 410013, China
| | - Jie Dong
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China
| | - Seraphine V. Wegner
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster 48149, Germany
| | - Fei Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China
| | - Wenbin Zeng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha 410013, China
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23
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Mendoza-Tobar LL, Clement H, Arenas I, Guerrero-Vargas JA, Hernandez-Orihuela L, Cardoso-Arenas S, Sepulveda-Arias JC, Corzo G. Antimicrobial, toxicological, and antigenic characteristics of three scorpion venoms from Colombia: Centruroides margaritatus, Tityus pachyurus and Tityus n. sp. aff. metuendus. Acta Trop 2024; 252:107134. [PMID: 38286350 DOI: 10.1016/j.actatropica.2024.107134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 01/31/2024]
Abstract
The venom fractions of three buthid scorpion species from Colombia, C. margaritatus, T. pachyurus and T. n. sp. aff. metuendus, were examined for antimicrobial and toxicity toward mice and insects. The three venoms were separated into individual fractions using RP-HPLC, resulting in 85 fractions from C. margaritatus, 106 from T. pachyurus, and 70 from T. n. sp. aff. metuendus. The major fractions from the three scorpion venoms, which were eluted between 35 and 50 min, were tested for antimicrobial activity and toxicity. It was confirmed that the venom of the three species contains fractions with antimicrobial peptides that were evaluated against two bacterial strains of public health importance, Pseudomonas aeruginosa and Staphylococcus aureus. The venom of C. margaritatus had two antimicrobial fractions that showed activity against the named tested strains. The venom of T. pachyurus had three fractions that showed activity against S. aureus and two against both bacterial strains. Finally, the venom of T. n. sp. aff. metuendus had one fraction that showed activity against S. aureus, and five fractions showed activity against both bacterial strains. Also, some peptide fractions from the three venoms were toxic to mice. Last, the venoms of C. margaritatus and T. pachyurus were used as immunogens to obtain neutralizing antibodies against its respective venoms and to observe antibody recognition to related and unrelated scorpion venoms. A total of 15 mg of lyophilized antibodies were able to neutralize 1.5⋅LD50 of the venoms from T. n. sp. aff. metuendus, T. pachyurus and C. margaritatus, respectively. This information provides valuable insights into the diversity of each species' venom and their potential role in antimicrobial and venom toxicity.
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Affiliation(s)
- Leydy Lorena Mendoza-Tobar
- Programa de Doctorado en Ciencias Biomédicas, Facultad de Ciencias de la Salud, Grupo Infección e Inmunidad - Universidad Tecnológica de Pereira, Pereira 660003, Colombia; Grupo de Investigaciones Herpetológicas y Toxinológicas, Centro de Investigaciones Biomédicas-Bioterio, Departamento de Biología, Facultad de Ciencias Naturales, Exactas y de la Educación, Universidad del Cauca, Popayán 190002, Colombia
| | - Herlinda Clement
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, UNAM. Apartado Postal 510-3, Cuernavaca, Morelos 61500, Mexico
| | - Ivan Arenas
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, UNAM. Apartado Postal 510-3, Cuernavaca, Morelos 61500, Mexico
| | - Jimmy Alexander Guerrero-Vargas
- Grupo de Investigaciones Herpetológicas y Toxinológicas, Centro de Investigaciones Biomédicas-Bioterio, Departamento de Biología, Facultad de Ciencias Naturales, Exactas y de la Educación, Universidad del Cauca, Popayán 190002, Colombia
| | - Lorena Hernandez-Orihuela
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, UNAM. Apartado Postal 510-3, Cuernavaca, Morelos 61500, Mexico
| | - Samuel Cardoso-Arenas
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, UNAM. Apartado Postal 510-3, Cuernavaca, Morelos 61500, Mexico
| | - Juan Carlos Sepulveda-Arias
- Programa de Doctorado en Ciencias Biomédicas, Facultad de Ciencias de la Salud, Grupo Infección e Inmunidad - Universidad Tecnológica de Pereira, Pereira 660003, Colombia
| | - Gerardo Corzo
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, UNAM. Apartado Postal 510-3, Cuernavaca, Morelos 61500, Mexico.
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24
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Fandiño-Devia E, Santa-González GA, Klaiss-Luna MC, Manrique-Moreno M. Study of the Membrane Activity of the Synthetic Peptide ∆M3 Against Extended-Spectrum β-lactamase Escherichia coli Isolates. J Membr Biol 2024; 257:51-61. [PMID: 38315239 PMCID: PMC11006780 DOI: 10.1007/s00232-024-00306-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/03/2024] [Indexed: 02/07/2024]
Abstract
Escherichia coli is the most common microorganism causing nosocomial or community-acquired bacteremia, and extended-spectrum β-lactamase-producing Escherichia coli isolates are identified worldwide with increasing frequency. For this reason, it is necessary to evaluate potential new molecules like antimicrobial peptides. They are recognized for their biological potential which makes them promising candidates in the fight against infections. The goal of this research was to evaluate the potential of the synthetic peptide ΔM3 on several extended-spectrum β-lactamase producing E. coli isolates. The antimicrobial and cytotoxic activity of the peptide was spectrophotometrically determined. Additionally, the capacity of the peptide to interact with the bacterial membrane was monitored by fluorescence microscopy and infrared spectroscopy. The results demonstrated that the synthetic peptide is active against Escherichia coli isolates at concentrations similar to Meropenem. On the other hand, no cytotoxic effect was observed in HaCaT keratinocyte cells even at 10 times the minimal inhibitory concentration. Microscopy results showed a permeabilizing effect of the peptide on the bacteria. The infrared results showed that ΔM3 showed affinity for the lipids of the microorganism's membrane. The results suggest that the ∆M3 interacts with the negatively charged lipids from the E. coli by a disturbing effect on membrane. Finally, the secondary structure experiments of the peptide showed a random structure in solution that did not change during the interaction with the membranes.
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Affiliation(s)
- Estefanía Fandiño-Devia
- Chemistry Institute, Faculty of Exact and Natural Sciences, University of Antioquia, A.A. 1226, Medellin, 050010, Colombia
| | - Gloria A Santa-González
- Grupo de Investigación e Innovación Biomédica, Facultad de Ciencias Exactas y Aplicadas, Instituto Tecnológico Metropolitano, A.A. 54959, Medellín, 050010, Colombia
| | - Maria C Klaiss-Luna
- Chemistry Institute, Faculty of Exact and Natural Sciences, University of Antioquia, A.A. 1226, Medellin, 050010, Colombia
| | - Marcela Manrique-Moreno
- Chemistry Institute, Faculty of Exact and Natural Sciences, University of Antioquia, A.A. 1226, Medellin, 050010, Colombia.
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25
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Hanafiah A, Abd Aziz SNA, Md Nesran ZN, Wezen XC, Ahmad MF. Molecular investigation of antimicrobial peptides against Helicobacter pylori proteins using a peptide-protein docking approach. Heliyon 2024; 10:e28128. [PMID: 38533069 PMCID: PMC10963377 DOI: 10.1016/j.heliyon.2024.e28128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024] Open
Abstract
The impact of H. pylori resistance on patient's treatment failure is a major concern. Therefore, the development of novel or alternative therapies for H. pylori is urgently needed. The purpose of this study was to investigate the molecular interactions of various antimicrobial peptides (AMPs) to H. pylori proteins. We performed the peptide-protein molecular docking using HADDOCK 2.4 webserver. Fourteen AMPs were tested for their binding efficacy against four H. pylori proteins. Simulation of the peptide-protein complex was performed using molecular dynamic software package AMBER20. From molecular docking analysis, five peptides (LL-37, Tilapia piscidin 4, napin, snakin-1 and EcAMP1) showed strong binding interactions against H. pylori proteins. The strongest binding affinity was observed in the interactions between Snakin-1 and PBP2, TP4 and type I HopQ and EcAMP1 and type I HopQ with -11.1, -13.6 and -13.8 kcal/mol, respectively. The dynamic simulation was performed for two complexes (snakin1-PBP2 and EcAMP1-HopQ). Results of the dynamics simulation showed that EcAMP1 had stable interaction and binding to type I HopQ protein without significant structural changes. In conclusion, both results of docking and simulation showed that EcAMP1 might be useful as a potential therapeutic agent for H. pylori treatment. This molecular approach provides deep understanding of the interaction insights between AMPs and H. pylori proteins. It paves the way for the development of novel anti-H. pylori using antimicrobial peptides.
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Affiliation(s)
- Alfizah Hanafiah
- Dept. of Medical Microbiology & Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000, Cheras, Kuala Lumpur, Malaysia
- GUT Research Group, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Siti Nur Arifah Abd Aziz
- Dept. of Medical Microbiology & Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000, Cheras, Kuala Lumpur, Malaysia
| | - Zarith Nameyrra Md Nesran
- Dept. of Medical Microbiology & Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000, Cheras, Kuala Lumpur, Malaysia
| | - Xavier Chee Wezen
- School of Engineering and Science, Faculty of Engineering, Computing and Science, Swinburne University of Technology, 93350, Kuching, Sarawak, Malaysia
| | - Mohd Fadzli Ahmad
- Faculty of Engineering and Life Sciences, Universiti Selangor, 45600, Bestari Jaya, Selangor, Malaysia
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26
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Nong K, Liu Z, Qin X, Chen W, Zhang B, Wu Y, Wang Z, Fang X, Liu Y, Wang X, Shi H, Zhang H. Effect of the Pseudopleuronectes americanus-derived Pleurocidin on DSS-induced Ulcerative colitis in mice and its preliminary molecular mechanisms. Int Immunopharmacol 2024; 130:111757. [PMID: 38422770 DOI: 10.1016/j.intimp.2024.111757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/03/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
Pleurocidin is an antimicrobial peptide derived from the mucous membranes of the skin or intestinal secretions of Pseudopleuronectes americanus that has antimicrobial and immunomodulatory activities. Ulcerative colitis is recognized as a widespread human disease that may be influenced by environmental and genetic factors. Evidence emphasizes the critical role of the gut microbiota in UC. Synthetic Pleurocidin was analyzed by a combination of liquid chromatography and mass spectrometry. Pleurocidin pharmacological effects were evaluated by DAI score, colon histological score, cytokine levels, and tight junction protein expression in mice. The preliminary molecular mechanism was explored by the levels of key proteins in the NF-κB and MAPK inflammatory signaling pathways in colon tissues. The main analytical methods such as immunohistochemistry, immunofluorescence, enzyme-linked immunosorbent assay (ELISA), and Western blot were used. We then used 16S rRNA gene sequences to characterize the gut microbiota. Firstly, our study demonstrated that rectal injection of Pleurocidin at 5 mg/kg body weight alleviated clinical symptoms and colonic histopathological changes in UC mice caused by DSS. Secondly, Pleurocidin altered the abnormal levels of inflammatory and immune-related cytokines in serum, modulated the significant down-regulation of tight junction proteins, and inhibited the expression of NF-κB and MAPK inflammatory signaling pathway-related proteins. Finally, Pleurocidin can regulate gut microbiota, increase the relative abundance of beneficial bacteria and reduce the relative abundance of harmful bacteria. In conclusion, Pleurocidin alleviates UC symptoms in mice, and its effects on the gut microbiome may be potential pathways. It is providing a promising therapeutic option for UC.
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Affiliation(s)
- Keyi Nong
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Zhineng Liu
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Xinyun Qin
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Wanyan Chen
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Bin Zhang
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Yijia Wu
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Zihan Wang
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Xin Fang
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Youming Liu
- Yibin Academy of Agricultural Sciences, Yibin 644600, China
| | - Xuemei Wang
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Huiyu Shi
- College of Tropical Agriculture and Forestry, Hainan University, China
| | - Haiwen Zhang
- College of Tropical Agriculture and Forestry, Hainan University, China.
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27
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Bhatt Mitra J, Chatterjee S, Kumar A, Khatoon E, Chandak A, Rakshit S, Bandyopadhyay A, Mukherjee A. Expanding a peptide-covalent probe hybrid for PET imaging of S. aureus driven focal infections. EJNMMI Radiopharm Chem 2024; 9:25. [PMID: 38530487 DOI: 10.1186/s41181-024-00252-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 03/04/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND The urgent demand for innovative theranostic strategies to combat bacterial resistance to antibiotics is evident, with substantial implications for global health. Rapid diagnosis of life-threatening infections can expedite treatment, improving patient outcomes. Leveraging diagnostic modalities i.e., positron emission tomography (PET) and single photon emission computed tomography (SPECT) for detecting focal infections has yielded promising results. Augmenting the sensitivity of current PET and SPECT tracers could enable effective imaging of pathogenic bacteria, including drug-resistant strains.UBI (29-41), an antimicrobial peptide (AMP) fragment recognizes the S. aureus membrane through electrostatic binding. Radiolabeled UBI (29-41) is a promising SPECT and PET-based tracer for detecting focal infections. 2-APBA (2-acetyl-phenyl-boronic acid), a non-natural amino acid, specifically targets lysyl-phosphatidyl-glycerol (lysyl-PG) on the S. aureus membranes, particularly in AMP-resistant strains. We propose that combining UBI with 2-APBA could enhance the diagnostic potential of radiolabeled UBI. RESULTS Present work aimed to compare the diagnostic potential of two radiolabeled peptides, namely UBI (29-41) and 2-APBA modified UBI (29-41), referred to as UBI and UBI-APBA. APBA modification imparted antibacterial activity to the initially non-bactericidal UBI against S. aureus by inducing a loss of membrane potential. The antibacterial activity demonstrated by UBI-APBA can be ascribed to the synergistic interaction of both UBI and UBI-APBA on the bacterial membrane. To enable PET imaging, we attached the chelator 1,4,7-triazacyclononane 1-glutaric acid 4,7-acetic acid (NODAGA) to the peptides for complexation with the positron emitter Gallium-68 (68Ga). Both NODAGA conjugates were radiolabeled with 68Ga with high radiochemical purity. The resultant 68Ga complexes were stable in phosphate-buffered saline and human serum. Uptake of these complexes was observed in S. aureus but not in mice splenocytes, indicating the selective nature of their interaction. Additionally, the APBA conjugate exhibited superior uptake in S. aureus while preserving the selectivity of the parent peptide. Furthermore, [68Ga]Ga-UBI-APBA demonstrated accumulation at the site of infection in rats, with an improved target-to-non-target ratio, as evidenced by ex-vivo biodistribution and PET imaging. CONCLUSIONS Our findings suggest that linking UBI, as well as AMPs in general, with APBA shows promise as a strategy to augment the theranostic potential of these molecules.
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Affiliation(s)
- Jyotsna Bhatt Mitra
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre (BARC), Mumbai, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, India
| | - Saurav Chatterjee
- Biomimetic Peptide Engineering Laboratory, Department of Chemistry, Indian Institute of Technology Ropar, Ropar, Punjab, India
| | - Anuj Kumar
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre (BARC), Mumbai, India
| | - Elina Khatoon
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre (BARC), Mumbai, India
| | - Ashok Chandak
- Board of Radiation and Isotope Technology, Navi Mumbai, India
| | | | - Anupam Bandyopadhyay
- Biomimetic Peptide Engineering Laboratory, Department of Chemistry, Indian Institute of Technology Ropar, Ropar, Punjab, India.
| | - Archana Mukherjee
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre (BARC), Mumbai, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, India.
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28
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Kanwal S, Arif R, Ahmed S, Kabir M. A novel stacking-based predictor for accurate prediction of antimicrobial peptides. J Biomol Struct Dyn 2024:1-12. [PMID: 38500243 DOI: 10.1080/07391102.2024.2329298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 03/06/2024] [Indexed: 03/20/2024]
Abstract
Antimicrobial peptides (AMPs) are gaining acceptance and support as a chief antibiotic substitute since they boost human immunity. They retain a wide range of actions and have a low risk of developing resistance, which are critical properties to the pharmaceutical industry for drug discovery. Antibiotic sensitivity, however, is an issue that affects people all around the world and has the potential to one day lead to an epidemic. As cutting-edge therapeutic agents, AMPs are also expected to cure microbial infections. In order to produce tolerable drugs, it is crucial to understand the significance of the basic architecture of AMPs. Traditional laboratory methods are expensive and time-consuming for AMPs testing and detection. Currently, bioinformatics techniques are being successfully applied to the detection of AMPs. In this study, we have developed a novel STacking-based ensemble learning framework for AntiMicrobial Peptide (STAMP) prediction. First, we constructed 84 different baseline models by using 12 different feature encoding schemes and 7 popular machine learning algorithms. Second, these baseline models were trained and employed to create a new probabilistic feature vector. Finally, based on the feature selection strategy, we determined the optimal probabilistic feature vector, which was further utilized for the construction of our stacked model. Resultantly, the STAMP predictor achieved excellent performance during cross-validation with an accuracy and Matthew's correlation coefficient of 0.930 and 0.860, respectively. The corresponding metrics during the independent test were 0.710 and 0.464, respectively. Overall, STAMP achieved a more accurate and stable performance than the baseline models and significantly outperformed the existing predictors, demonstrating the effectiveness of our proposed hybrid framework. Furthermore, STAMP is expected to assist community-wide efforts in identifying AMPs and will contribute to the development of novel therapeutic methods and drug-design for immunity.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sameera Kanwal
- School of Systems and Technology, University of Management and Technology, Lahore, Pakistan
| | - Roha Arif
- School of Systems and Technology, University of Management and Technology, Lahore, Pakistan
| | - Saeed Ahmed
- School of Systems and Technology, University of Management and Technology, Lahore, Pakistan
| | - Muhammad Kabir
- School of Systems and Technology, University of Management and Technology, Lahore, Pakistan
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29
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Sadek Hana HN, Ahmed Abd El Galil MAEA, Allah Mousa MA, El-Lateif RSB, Emam AM. Effect of transporting Oreochromis niloticus in water with and without sodium chloride on skin morphology and some immunity-related genes expression. BMC Vet Res 2024; 20:105. [PMID: 38493097 PMCID: PMC10943852 DOI: 10.1186/s12917-024-03937-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 02/14/2024] [Indexed: 03/18/2024] Open
Abstract
The aim of this study was to examine the effects of salt addition on the skin gene expression of Mucin, Antimicrobial peptides, cortisol, and glucose in Oreochromis niloticus after 5-hour transportation in water. Three groups were compared: Control, post-transport without salt (PT-S), and post-transport with 5 g salt-1(PT + S), with a stocking density of 28.6 gL-1, 20 fish for each experimental group. The results showed that the PT-S group had more significant changes in gene expression than the PT + S group, suggesting that salt alleviated the stress and immune responses of O. niloticus. The PT-S group had higher expression of mucin- 2(MUC + 2) (7.58 folds) and mucin-5AC (MUC5-AC) (6.29 folds) than the PT + S group (3.30 folds and 4.16 folds, respectively). The PT-S group also had lower expression of β-defensin-1 (Dβ1) (0.42 folds), β-defensin-2 (Dβ2) (0.29 folds), and Cath1 (0.16 folds) than the PT + S group (0.82 folds, 0.69 folds, and 0.75 folds, respectively). The skin morphology of the PT-S group revealed some white patches with no goblet cell openings, while the PT + S group had better preservation of skin features with some goblet cell openings and slight white patches. This study indicates that O. niloticus can benefit from sodium chloride during transportation, as it helps to reduce stress and inflammation, balance mineral levels, enhance health and immunity, and regulate mucous secretion.
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Affiliation(s)
- Heba Naeim Sadek Hana
- Unit of Fish Diseases, Assiut Lab, Animal Health Research Institute (AHRI), Assiut Lab., Assiut, Egypt
| | | | | | - Rasha S B El-Lateif
- Unit of Fish Diseases, Assiut Lab, Animal Health Research Institute (AHRI), Assiut Lab., Assiut, Egypt
| | - Arafah M Emam
- National Institute of Oceanography and Fisheries, NIOF, Cairo, Egypt
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Eloïse L, Petit L, Nominé Y, Heurtault B, Ben Hadj Kaddour I, Senger B, Rodon Fores J, Vrana NE, Barbault F, Lavalle P. The antibacterial properties of branched peptides based on poly(l-arginine): In vitro antibacterial evaluation and molecular dynamic simulations. Eur J Med Chem 2024; 268:116224. [PMID: 38387338 DOI: 10.1016/j.ejmech.2024.116224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/27/2024] [Accepted: 02/07/2024] [Indexed: 02/24/2024]
Abstract
The emergence of bacterial strains resistant to antibiotics is a major issue in the medical field. Antimicrobial peptides are widely studied as they do not generate as much resistant bacterial strains as conventional antibiotics and present a broad range of activity. Among them, the homopolypeptide poly(l-arginine) presents promising antibacterial properties, especially in the perspective of its use in biomaterials. Linear poly(l-arginine) has been extensively studied but the impact of its 3D structure remains unknown. In this study, the antibacterial properties of newly synthesized branched poly(l-arginine) peptides, belonging to the family of multiple antigenic peptides, are evaluated. First, in vitro activities of the peptides shows that branched poly(l-arginine) is more efficient than linear poly(l-arginine) containing the same number of arginine residues. Surprisingly, peptides with more arms and more residues are not the most effective. To better understand these unexpected results, interactions between these peptides and the membranes of Gram positive and Gram negative bacteria are simulated thanks to molecular dynamic. It is observed that the bacterial membrane is more distorted by the branched structure than by the linear one and by peptides containing smaller arms. This mechanism of action is in full agreement with in vitro results and suggest that our simulations form a robust model to evaluate peptide efficiency towards pathogenic bacteria.
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Affiliation(s)
- Lebaudy Eloïse
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
| | - Lauriane Petit
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
| | - Yves Nominé
- Institut de génétique et de biologie moléculaire et cellulaire, IGBMC, Illkirch, France
| | - Béatrice Heurtault
- Université de Strasbourg, Centre national de la recherche scientifique (CNRS), Laboratoire de Conception et Application de Molécules Bioactives UMR 7199, Faculté de Pharmacie, Illkirch, France
| | - Inès Ben Hadj Kaddour
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
| | - Bernard Senger
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
| | - Jennifer Rodon Fores
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
| | - Nihal Engin Vrana
- Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
| | | | - Philippe Lavalle
- Inserm UMR_S 1121, EMR 7003 CNRS, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, F67000, Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France; SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France.
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31
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Monsalve D, Mesa A, Mira LM, Mera C, Orduz S, Branch-Bedoya JW. Antimicrobial peptides designed by computational analysis of proteomes. Antonie Van Leeuwenhoek 2024; 117:55. [PMID: 38488950 DOI: 10.1007/s10482-024-01946-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 02/06/2024] [Indexed: 03/17/2024]
Abstract
Antimicrobial peptides (AMPs) are promising cationic and amphipathic molecules to fight antibiotic resistance. To search for novel AMPs, we applied a computational strategy to identify peptide sequences within the organisms' proteome, including in-house developed software and artificial intelligence tools. After analyzing 150.450 proteins from eight proteomes of bacteria, plants, a protist, and a nematode, nine peptides were selected and modified to increase their antimicrobial potential. The 18 resulting peptides were validated by bioassays with four pathogenic bacterial species, one yeast species, and two cancer cell-lines. Fourteen of the 18 tested peptides were antimicrobial, with minimum inhibitory concentrations (MICs) values under 10 µM against at least three bacterial species; seven were active against Candida albicans with MICs values under 10 µM; six had a therapeutic index above 20; two peptides were active against A549 cells, and eight were active against MCF-7 cells under 30 µM. This study's most active antimicrobial peptides damage the bacterial cell membrane, including grooves, dents, membrane wrinkling, cell destruction, and leakage of cytoplasmic material. The results confirm that the proposed approach, which uses bioinformatic tools and rational modifications, is highly efficient and allows the discovery, with high accuracy, of potent AMPs encrypted in proteins.
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Affiliation(s)
- Dahiana Monsalve
- Escuela de Biociencias, Departamento de Ciencias, Universidad Nacional de Colombia, sede Medellín, Carrera 65 # 59A-110, 050034, Medellín, Antioquia, Colombia
| | - Andrea Mesa
- Escuela de Biociencias, Departamento de Ciencias, Universidad Nacional de Colombia, sede Medellín, Carrera 65 # 59A-110, 050034, Medellín, Antioquia, Colombia
| | - Laura M Mira
- Escuela de Biociencias, Departamento de Ciencias, Universidad Nacional de Colombia, sede Medellín, Carrera 65 # 59A-110, 050034, Medellín, Antioquia, Colombia
| | - Carlos Mera
- Departamento de Sistemas de Información, Instituto Tecnológico Metropolitano, Calle 54A # 30-01, 050013, Medellín, Antioquia, Colombia.
- Departamento de Ingeniería de Sistemas, Facultad de Ingenierías, Universidad de Antioquia, Calle 70 # 52-21, 050010, Medellín, Antioquia, Colombia.
| | - Sergio Orduz
- Escuela de Biociencias, Departamento de Ciencias, Universidad Nacional de Colombia, sede Medellín, Carrera 65 # 59A-110, 050034, Medellín, Antioquia, Colombia
| | - John W Branch-Bedoya
- Departamento de Ciencias de la Computación y de la Decisión, Facultad de Minas, Universidad Nacional de Colombia, sede Medellín, Av. 80 # 65-223, 050041, Medellín, Antioquia, Colombia
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Zhong C, Zou J, Mao W, Yang P, Zhang J, Gou S, Zhang Y, Liu H, Ni J. Structure modification of anoplin for fighting resistant bacteria. Eur J Med Chem 2024; 268:116276. [PMID: 38452726 DOI: 10.1016/j.ejmech.2024.116276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/21/2024] [Accepted: 02/21/2024] [Indexed: 03/09/2024]
Abstract
The emergence of bacterial resistance has posed a significant challenge to clinical antimicrobial treatment, rendering commonly used antibiotics ineffective. The development of novel antimicrobial agents and strategies is imperative for the treatment of resistant bacterial infections. Antimicrobial peptides (AMPs) are considered a promising class of antimicrobial agents due to their low propensity for resistance and broad-spectrum activity. Anoplin is a small linear α-helical natural antimicrobial peptide that was isolated from the venom of the solitary wasp Anplius samariensis. It exhibits rich biological activity, particularly broad-spectrum antimicrobial activity and low hemolytic activity. Over the past three decades, more than 40 research publications on anoplin have been made available online. This review focuses on the advancements of anoplin in antimicrobial research, encompassing its sources, characterization, antimicrobial activity, influencing factors and structural modifications. The aim is to provide assistances for the development of new antimicrobial agents that can combat bacterial resistance.
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Affiliation(s)
- Chao Zhong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China; Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China.
| | - Jing Zou
- Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China
| | - Wenbo Mao
- Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China
| | - Ping Yang
- Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China
| | - Jingying Zhang
- Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China
| | - Sanhu Gou
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China; Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China
| | - Yun Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China; Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China
| | - Hui Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China; Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China
| | - Jingman Ni
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China; Institute of Pharmaceutics, School of Pharmacy, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, PR China.
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Elradi M, Ahmed AI, Saleh AM, Abdel-Raouf KMA, Berika L, Daoud Y, Amleh A. Derivation of a novel antimicrobial peptide from the Red Sea Brine Pools modified to enhance its anticancer activity against U2OS cells. BMC Biotechnol 2024; 24:14. [PMID: 38491556 PMCID: PMC10943910 DOI: 10.1186/s12896-024-00835-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/06/2024] [Indexed: 03/18/2024] Open
Abstract
Cancer associated drug resistance is a major cause for cancer aggravation, particularly as conventional therapies have presented limited efficiency, low specificity, resulting in long term deleterious side effects. Peptide based drugs have emerged as potential alternative cancer treatment tools due to their selectivity, ease of design and synthesis, safety profile, and low cost of manufacturing. In this study, we utilized the Red Sea metagenomics database, generated during AUC/KAUST Red Sea microbiome project, to derive a viable anticancer peptide (ACP). We generated a set of peptide hits from our library that shared similar composition to ACPs. A peptide with a homeodomain was selected, modified to improve its anticancer properties, verified to maintain high anticancer properties, and processed for further in-silico prediction of structure and function. The peptide's anticancer properties were then assessed in vitro on osteosarcoma U2OS cells, through cytotoxicity assay (MTT assay), scratch-wound healing assay, apoptosis/necrosis detection assay (Annexin/PI assay), RNA expression analysis of Caspase 3, KI67 and Survivin, and protein expression of PARP1. L929 mouse fibroblasts were also assessed for cytotoxicity treatment. In addition, the antimicrobial activity of the peptide was also examined on E coli and S. aureus, as sample representative species of the human bacterial microbiome, by examining viability, disk diffusion, morphological assessment, and hemolytic analysis. We observed a dose dependent cytotoxic response from peptide treatment of U2OS, with a higher tolerance in L929s. Wound closure was debilitated in cells exposed to the peptide, while annexin fluorescent imaging suggested peptide treatment caused apoptosis as a major mode of cell death. Caspase 3 gene expression was not altered, while KI67 and Survivin were both downregulated in peptide treated cells. Additionally, PARP-1 protein analysis showed a decrease in expression with peptide exposure. The peptide exhibited minimal antimicrobial activity on critical human microbiome species E. coli and S. aureus, with a low inhibition rate, maintenance of structural morphology and minimal hemolytic impact. These findings suggest our novel peptide displayed preliminary ACP properties against U2OS cells, through limited specificity, while triggering apoptosis as a primary mode of cell death and while having minimal impact on the microbiological species E. coli and S. aureus.
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Affiliation(s)
- Mona Elradi
- Biotechnology Program, American University in Cairo, New Cairo, Egypt
| | - Ahmed I Ahmed
- Biology Department, American University in Cairo, New Cairo, Egypt
| | - Ahmed M Saleh
- Biology Department, American University in Cairo, New Cairo, Egypt
| | | | - Lina Berika
- Biology Department, American University in Cairo, New Cairo, Egypt
| | - Yara Daoud
- Biology Department, American University in Cairo, New Cairo, Egypt
| | - Asma Amleh
- Biotechnology Program, American University in Cairo, New Cairo, Egypt.
- Biology Department, American University in Cairo, New Cairo, Egypt.
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Xu J, Xu X, Jiang Y, Fu Y, Shen C. Waste to resource: Mining antimicrobial peptides in sludge from metagenomes using machine learning. Environ Int 2024; 186:108574. [PMID: 38507933 DOI: 10.1016/j.envint.2024.108574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/26/2024] [Accepted: 03/09/2024] [Indexed: 03/22/2024]
Abstract
The emergence of antibiotic-resistant bacteria poses a huge threat to the treatment of infections. Antimicrobial peptides are a class of short peptides that widely exist in organisms and are considered as potential substitutes for traditional antibiotics. Here, we use metagenomics combined with machine learning to find antimicrobial peptides from environmental metagenomes and successfully obtained 16,044,909 predicted AMPs. We compared the abundance of potential antimicrobial peptides in natural environments and engineered environments, and found that engineered environments also have great potential. Further, we chose sludge as a typical engineered environmental sample, and tried to mine antimicrobial peptides from it. Through metaproteome analysis and correlation analysis, we mined 27 candidate AMPs from sludge. We successfully synthesized 25 peptides by chemical synthesis, and experimentally verified that 21 peptides had antibacterial activity against the 4 strains tested. Our work highlights the potential for mining new antimicrobial peptides from engineered environments and demonstrates the effectiveness of mining antimicrobial peptides from sludge.
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Affiliation(s)
- Jiaqi Xu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China
| | - Xin Xu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China
| | - Yunhan Jiang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China; Zhejiang Provincial Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China
| | - Yulong Fu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China; Innovation Center of Yangtze River Delta, Zhejiang University, China
| | - Chaofeng Shen
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China; Innovation Center of Yangtze River Delta, Zhejiang University, China.
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Xia J, Ge C, Yao H. Antimicrobial peptides: An alternative to antibiotic for mitigating the risks of Antibiotic resistance in aquaculture. Environ Res 2024; 251:118619. [PMID: 38442817 DOI: 10.1016/j.envres.2024.118619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 02/26/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024]
Abstract
The utilization of antibiotics increases the prevalence of antibiotic resistance genes (ARGs) in various matrices and poses the potential risk of ARG transmission, garnering global attention. Antimicrobial peptides (AMPs) represent a promising novel category of antimicrobials that may address the urgent issue of antibiotic resistance. Here, a zebrafish cultivation assay in which zebrafish were fed a diet supplemented with AMP (Cecropin A) or antibiotics was conducted to determine the effects of the intervention on the microorganisms and antibiotic resistance spectrum in zebrafish gut samples. Cecropin A treatment decreased the α-diversity of the microbiota. Moreover, NMDS (nonmetric multidimensional scaling) results revealed that the β-diversity in the microbiota was more similar between the control (CK) and Cecropin A samples than between the antibiotic treatment groups. The absolute quantity of ARGs in the AMP treatment was less than that observed in the antibiotic treatment. The findings indicated that FFCH7168, Chitinibacter and Cetobacterium were the most significant biomarkers detected in the CK, Cecropin A and antibiotic treatments, respectively. Although the use of antibiotics notably enhanced the occurrence of multidrug-resistant bacteria, the application of Cecropin A did not lead to this phenomenon. The results indicated that the application of AMPs can effectively manage and control ARGs in aquaculture.
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Affiliation(s)
- Jing Xia
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China
| | - Chaorong Ge
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China
| | - Huaiying Yao
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China; Ningbo Urban Environment Observation and Research Station, Chinese Academy of Sciences, Ningbo, 315800, PR China.
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36
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Summer K, Liu L, Guo Q, Barkla B, Benkendorff K. Semi-purified Antimicrobial Proteins from Oyster Hemolymph Inhibit Pneumococcal Infection. Mar Biotechnol (NY) 2024:10.1007/s10126-024-10297-w. [PMID: 38430292 DOI: 10.1007/s10126-024-10297-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/05/2024] [Indexed: 03/03/2024]
Abstract
Pneumococcal infections caused by Streptococcus pneumoniae are a leading cause of morbidity and mortality globally, particularly among children. The ability of S. pneumoniae to form enduring biofilms makes treatment inherently difficult, and options are further limited by emerging antibiotic resistance. The discovery of new antibiotics, particularly those with antibiofilm activity, is therefore increasingly important. Antimicrobial proteins and peptides (AMPs) from marine invertebrates are recognised as promising pharmacological leads. This study determined the in vitro antibacterial activity of hemolymph and unique protein fractions from an Australian oyster (Saccostrea glomerata) against multi-drug-resistant S. pneumoniae. We developed a successful method for hemolymph extraction and separation into 16 fractions by preparative HPLC. The strongest activity was observed in fraction 7: at 42 µg/mL protein, this fraction was bactericidal to S. pneumoniae and inhibited biofilm formation. Proteomic analysis showed that fraction 7 contained relatively high abundance of carbonic anhydrase, cofilin, cystatin B-like, and gelsolin-like proteins, while surrounding fractions, which showed lower or no antibacterial activity, contained these proteins in lower abundance or not at all. This work supports traditional medicinal uses of oysters and contributes to further research and development of novel hemolymph/AMP-based treatments for pneumococcal infections.
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Affiliation(s)
- Kate Summer
- Faculty of Science and Engineering, Southern Cross University, Military Road, Lismore, NSW, 2480, Australia.
| | - Lei Liu
- Faculty of Science and Engineering, Southern Cross University, Military Road, Lismore, NSW, 2480, Australia
| | - Qi Guo
- Faculty of Science and Engineering, Southern Cross University, Military Road, Lismore, NSW, 2480, Australia
| | - Bronwyn Barkla
- Faculty of Science and Engineering, Southern Cross University, Military Road, Lismore, NSW, 2480, Australia
| | - Kirsten Benkendorff
- National Marine Science Centre, Southern Cross University, 2 Bay Drive, Coffs Harbour, NSW, 2450, Australia
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Nazarian-Firouzabadi F, Torres MDT, de la Fuente-Nunez C. Recombinant production of antimicrobial peptides in plants. Biotechnol Adv 2024; 71:108296. [PMID: 38042311 DOI: 10.1016/j.biotechadv.2023.108296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/10/2023] [Accepted: 11/26/2023] [Indexed: 12/04/2023]
Abstract
Classical plant breeding methods are limited in their ability to confer disease resistance on plants. However, in recent years, advancements in molecular breeding and biotechnological have provided new approaches to overcome these limitations and protect plants from disease. Antimicrobial peptides (AMPs) constitute promising agents that may be able to protect against infectious agents. Recently, peptides have been recombinantly produced in plants at scale and low cost. Because AMPs are less likely than conventional antimicrobials to elicit resistance of pathogenic bacteria, they open up exciting new avenues for agricultural applications. Here, we review recent advances in the design and production of bioactive recombinant AMPs that can effectively protect crop plants from diseases.
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Affiliation(s)
- Farhad Nazarian-Firouzabadi
- Production Engineering and Plant Genetics Department, Faculty of Agriculture, Lorestan University, P.O. Box, 465, Khorramabad, Iran.
| | - Marcelo Der Torossian Torres
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America; Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, United States of America; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America; Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, United States of America; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, United States of America.
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Ghazal A, Clarke D, Abdel-Rahman MA, Ribeiro A, Collie-Duguid E, Pattinson C, Burgoyne K, Muhammad T, Alfadhel S, Heidari Z, Samir R, Gerges MM, Nkene I, Colamarino RA, Hijazi K, Houssen WE. Venomous gland transcriptome and venom proteomic analysis of the scorpion Androctonus amoreuxi reveal new peptides with anti-SARS-CoV-2 activity. Peptides 2024; 173:171139. [PMID: 38142817 DOI: 10.1016/j.peptides.2023.171139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 12/26/2023]
Abstract
The recent COVID-19 pandemic shows the critical need for novel broad spectrum antiviral agents. Scorpion venoms are known to contain highly bioactive peptides, several of which have demonstrated strong antiviral activity against a range of viruses. We have generated the first annotated reference transcriptome for the Androctonus amoreuxi venom gland and used high performance liquid chromatography, transcriptome mining, circular dichroism and mass spectrometric analysis to purify and characterize twelve previously undescribed venom peptides. Selected peptides were tested for binding to the receptor-binding domain (RBD) of the SARS-CoV-2 spike protein and inhibition of the spike RBD - human angiotensin-converting enzyme 2 (hACE2) interaction using surface plasmon resonance-based assays. Seven peptides showed dose-dependent inhibitory effects, albeit with IC50 in the high micromolar range (117-1202 µM). The most active peptide was synthesized using solid phase peptide synthesis and tested for its antiviral activity against SARS-CoV-2 (Lineage B.1.1.7). On exposure to the synthetic peptide of a human lung cell line infected with replication-competent SARS-CoV-2, we observed an IC50 of 200 nM, which was nearly 600-fold lower than that observed in the RBD - hACE2 binding inhibition assay. Our results show that scorpion venom peptides can inhibit the SARS-CoV-2 replication although unlikely through inhibition of spike RBD - hACE2 interaction as the primary mode of action. Scorpion venom peptides represent excellent scaffolds for design of novel anti-SARS-CoV-2 constrained peptides. Future studies should fully explore their antiviral mode of action as well as the structural dynamics of inhibition of target virus-host interactions.
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Affiliation(s)
- Ahmad Ghazal
- Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, UK; Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - David Clarke
- School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, UK
| | | | - Antonio Ribeiro
- Centre for Genome-Enabled Biology and Medicine, University of Aberdeen, Aberdeen AB24 3RY, UK
| | - Elaina Collie-Duguid
- Centre for Genome-Enabled Biology and Medicine, University of Aberdeen, Aberdeen AB24 3RY, UK
| | - Craig Pattinson
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Kate Burgoyne
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Taj Muhammad
- Pharmacognosy, Department of Pharmaceutical Biosciences, Uppsala University, Biomedical Centre, Box 591 SE-75124 Uppsala, Sweden
| | - Sanad Alfadhel
- Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Zeynab Heidari
- Centre for Genome-Enabled Biology and Medicine, University of Aberdeen, Aberdeen AB24 3RY, UK
| | - Reham Samir
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Mariam M Gerges
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Istifanus Nkene
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Rosa A Colamarino
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Karolin Hijazi
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Wael E Houssen
- Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, UK; Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK.
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39
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Wang X, Xu Y, Martin NI, Breukink E. The enigmatic mode of action of the lantibiotic epilancin 15X. Biochim Biophys Acta Biomembr 2024; 1866:184282. [PMID: 38218577 DOI: 10.1016/j.bbamem.2024.184282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/21/2023] [Accepted: 01/04/2024] [Indexed: 01/15/2024]
Abstract
Epilancin 15X is a lantibiotic that has an antimicrobial activity in the nanomolar concentration range towards Staphylococcus simulans. Such low MICs usually imply that these peptides employ a mechanism of action (MoA) involving high affinity targets. Here we studied this MoA by using epilancin 15X's ability to dissipate the membrane potential of intact S. simulans cells. These membrane depolarization assays showed that treatment of the bacteria by antibiotics known to affect the bacterial cell wall synthesis pathway decreased the membrane depolarization effects of epilancin 15X. Disruption of the Lipid II cycle in intact bacteria using several methods led to a decrease in the activity of epilancin 15X. Antagonism-based experiments on 96-well plate and agar diffusion plate pointed towards a possible interaction between epilancin 15X and Lipid II and this was confirmed by Circular Dichroism (CD) based experiments. However, this interaction did not lead to a detectable effect on either carboxyfluorescein (CF) leakage or proton permeability. All experiments point to the involvement of a phosphodiester-containing target within a polyisoprene-based biosynthesis pathway, yet the exact identity of the target remains obscure so far.
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Affiliation(s)
- Xiaoqi Wang
- Membrane Biochemistry and Biophysics, Department of Chemistry, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Yang Xu
- Membrane Biochemistry and Biophysics, Department of Chemistry, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Nathaniel I Martin
- Biological Chemistry Group, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, Netherlands
| | - Eefjan Breukink
- Membrane Biochemistry and Biophysics, Department of Chemistry, Faculty of Science, Utrecht University, Utrecht, Netherlands; Zhejiang Provincial Key Laboratory of Food Microbiotechnology Research of China, the Zhejiang Gongshang University of China, Hangzhou, China.
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40
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Qu H, Yao Q, Chen T, Wu H, Liu Y, Wang C, Dong A. Current status of development and biomedical applications of peptide-based antimicrobial hydrogels. Adv Colloid Interface Sci 2024; 325:103099. [PMID: 38330883 DOI: 10.1016/j.cis.2024.103099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 02/10/2024]
Abstract
Microbial contamination poses a serious threat to human life and health. Through the intersection of material science and modern medicine, advanced bionic hydrogels have shown great potential for biomedical applications due to their unique bioactivity and ability to mimic the extracellular matrix environment. In particular, as a promising antimicrobial material, the synthesis and practical biomedical applications of peptide-based antimicrobial hydrogels have drawn increasing research interest. The synergistic effect of peptides and hydrogels facilitate the controlled release of antimicrobial agents and mitigation of their biotoxicity while achieving antimicrobial effects and protecting the active agents from degradation. This review reports on the progress and trends of researches in the last five years and provides a brief outlook, aiming to provide theoretical background on peptide-based antimicrobial hydrogels and make suggestions for future related work.
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Affiliation(s)
- Huihui Qu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China; College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, People's Republic of China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, People's Republic of China
| | - Quanfu Yao
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, People's Republic of China; College of Chemistry and Environment, Hohhot Minzu College, Hohhot 010051, People's Republic of China
| | - Ting Chen
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, People's Republic of China
| | - Haixia Wu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, People's Republic of China.
| | - Ying Liu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, People's Republic of China.
| | - Cong Wang
- Center of Experimental Instrument, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China.
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, People's Republic of China.
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41
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Peng J, Li L, Wan Y, Yang Y, An X, Yuan K, Qiu Z, Jiang Y, Guo G, Shen F, Liang G. Molecular characterization and antimicrobial activity of cecropin family in Hermetia illucens. Dev Comp Immunol 2024; 152:105111. [PMID: 38081402 DOI: 10.1016/j.dci.2023.105111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023]
Abstract
Antimicrobial peptides are potential alternatives to traditional antibiotics in the face of increasing bacterial resistance. Insects possess many antimicrobial peptides and have become a valuable source of novel and highly effective antimicrobial peptides. Hermetia illucens as a resource insect, for example, has the highest number of antimicrobial peptides of any dipteran. However, most antimicrobial peptides, especially cecropin, have not been comprehensively identified and have not been evaluated for their antimicrobial ability. In this study, we analyzed the localization and gene structure of 33 cecropin molecules in the H. illucens genome and evaluated their activity against common human pathogens. The results showed that 32 cecropin molecules were concentrated on 1 chromosome, most with 2 exons. More importantly, most of the cecropins had a good antibacterial effect against Gram-negative bacteria, and were not hemolytic. The minimum inhibitory concentration (MIC) of the cecropin designated H3 against E. coli was 4 μg/mL. The toxicity, killing time kinetics, and anti-biofilm activity of H3 were further investigated and confirmed its antimicrobial ability. Overall, H3 is a potential candidate for the development of new antimicrobials to treat severe infections caused by Gram-negative pathogens such as E. coli.
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Affiliation(s)
- Jian Peng
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China; Guizhou Institute of Precision Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China; Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Lu Li
- Guizhou Institute of Precision Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China; Department of Intensive Care Unit, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China
| | - Yan Wan
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Yifan Yang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Xiaoqin An
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Kexin Yuan
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Zhilang Qiu
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Yinhui Jiang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Guo Guo
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Feng Shen
- Guizhou Institute of Precision Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China; Department of Intensive Care Unit, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China.
| | - Guiyou Liang
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China; Department of Cardiac Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China.
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42
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Monod EC, Betancourt JL, Samms KA, Alkie TN, Walmsley CG, Rodríguez-Ramos T, DeWitte-Orr SJ, Dixon B. Immunostimulant effects of Pituitary Adenylate Cyclase-Activating Polypeptide and double-stranded (ds)RNA in Orconectes propinquus. Fish Shellfish Immunol 2024; 146:109388. [PMID: 38244819 DOI: 10.1016/j.fsi.2024.109388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/22/2023] [Accepted: 01/16/2024] [Indexed: 01/22/2024]
Abstract
Disease outbreaks in crustacean aquaculture caused by opportunistic and obligate pathogens cause severe economic losses to the industry. Antibiotics are frequently used as prophylactic treatments worldwide, although its overuse and misuse has led to microbial resistance, which has driven the search for novel molecules with immunostimulant and antibacterial activities. Antimicrobial peptides (AMP) and double-stranded (ds)RNAs constitute promising immunostimulants in the fight against infectious diseases in aquaculture. Scientists have made significant progress in testing these molecules in aquatic organisms as potential candidates for replacing conventional antibiotics. However, most studies have been conducted in teleost fish, thus little is known about the immunostimulatory effects in crustaceans, especially in freshwater crayfishes. Consequently, in the present work, we evaluate the immunomodulatory effects of the AMP Pituitary Adenylate Cyclase Activating Polypeptide (PACAP) and high molecular weight (HMW) Poly (I:C) in the northern clearwater crayfish Orconectes propinquus. Two bioassays were conducted to evaluate the effects of different doses of PACAP and Poly (I:C) HMW, different administration routes, as well as the effects of the combined treatment on the crayfish immune system. Results showed the immunostimulatory role of PACAP and Poly (I:C) HMW with effects depending on the dose, the site of injection and the treatment assessed. These findings offer new insights into the crayfish immune system and contribute to the development of effective broad-spectrum immune therapies in aquaculture.
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Affiliation(s)
- Emma C Monod
- Department of Biology, Wilfrid Laurier University, Waterloo, Canada; Department of Biology, University of Waterloo, Waterloo, Canada
| | | | - Kayla A Samms
- Department of Biology, Wilfrid Laurier University, Waterloo, Canada
| | - Tamiru N Alkie
- Department of Biology, Wilfrid Laurier University, Waterloo, Canada
| | | | | | | | - Brian Dixon
- Department of Biology, University of Waterloo, Waterloo, Canada.
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43
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Straus SK. Tryptophan- and arginine-rich antimicrobial peptides: Anti-infectives with great potential. Biochim Biophys Acta Biomembr 2024; 1866:184260. [PMID: 38113954 DOI: 10.1016/j.bbamem.2023.184260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/21/2023]
Abstract
With the increasing prevalence of multidrug resistant (MDR) bacteria, there is a need to design synthetic antimicrobial peptides (AMPs) that are effective and selective for bacteria, i.e. non-toxic to mammalian cells. One design strategy, namely the use of tryptophan- and arginine-rich AMPs, is rooted in the study of natural AMPs that are composed mainly of these amino acids, such as lactoferricin, tritrpticin, and puroindoline. A number of important studies on these AMPs by the Vogel group are reviewed here. More recent work on W-/R-rich peptides is also presented. The examples show that these peptides represent anti-infectives with great potential.
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Affiliation(s)
- Suzana K Straus
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
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44
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Cherniavskyi YK, Oliva R, Stellato M, Del Vecchio P, Galdiero S, Falanga A, Dames SA, Tieleman DP. Structural characterization of the antimicrobial peptides myxinidin and WMR in bacterial membrane mimetic micelles and bicelles. Biochim Biophys Acta Biomembr 2024; 1866:184272. [PMID: 38211645 DOI: 10.1016/j.bbamem.2024.184272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/13/2024]
Abstract
Antimicrobial peptides are a promising class of potential antibiotics that interact selectively with negatively charged lipid bilayers. This paper presents the structural characterization of the antimicrobial peptides myxinidin and WMR associated with bacterial membrane mimetic micelles and bicelles by NMR, CD spectroscopy, and molecular dynamics simulations. Both peptides adopt a different conformation in the lipidic environment than in aqueous solution. The location of the peptides in micelles and bicelles has been studied by paramagnetic relaxation enhancement experiments with paramagnetic tagged 5- and 16-doxyl stearic acid (5-/16-SASL). Molecular dynamics simulations of multiple copies of the peptides were used to obtain an atomic level of detail on membrane-peptide and peptide-peptide interactions. Our results highlight an essential role of the negatively charged membrane mimetic in the structural stability of both myxinidin and WMR. The peptides localize predominantly in the membrane's headgroup region and have a noticeable membrane thinning effect on the overall bilayer structure. Myxinidin and WMR show a different tendency to self-aggregate, which is also influenced by the membrane composition (DOPE/DOPG versus DOPE/DOPG/CL) and can be related to the previously observed difference in the ability of the peptides to disrupt different types of model membranes.
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Affiliation(s)
- Yevhen K Cherniavskyi
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Rosario Oliva
- Department of Chemical Sciences, University of Naples "Federico II", via Cintia, 80126 Naples, Italy
| | - Marco Stellato
- Department of Chemical Sciences, University of Naples "Federico II", via Cintia, 80126 Naples, Italy
| | - Pompea Del Vecchio
- Department of Chemical Sciences, University of Naples "Federico II", via Cintia, 80126 Naples, Italy
| | - Stefania Galdiero
- Department of Pharmacy, University of Naples 'Federico II', Via Domenico Montesano 49, 80131 Naples, Italy
| | - Annarita Falanga
- Department of Agricultural Science, University of Naples 'Federico II', Via dell' Università 100, 80055 Portici, Naples, Italy
| | - Sonja A Dames
- Chair of Biomolecular NMR Spectroscopy, Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany; Hausdorff Center for Mathematics, University of Bonn, Endenicher Allee 62, 53115 Bonn, Germany; Institute of Structural Biology, Helmholtz Zentrum München, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany.
| | - D Peter Tieleman
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.
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45
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Ma F, Ma R, Zhao L. Effects of Antimicrobial Peptides on Antioxidant Properties, Non-specific Immune Response and Gut Microbes of Tsinling Lenok Trout (Brachymystax lenok tsinlingensis). Biochem Genet 2024:10.1007/s10528-024-10708-6. [PMID: 38411941 DOI: 10.1007/s10528-024-10708-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 01/17/2024] [Indexed: 02/28/2024]
Abstract
Antimicrobial peptides (AMPs) are an important part of non-specific immunity and play a key role in the cellular host defense against pathogens and tissue injury infections. We investigated the effects of AMP supplementation on the antioxidant capacity, non-specific immunity, and gut microbiota of tsinling lenok trout. 240 fish were fed diets (CT, A120, A240 and A480) containing different amounts of AMP peptides (0, 120 mg kg-1, 240 mg kg-1, 480 mg kg-1) for 8 weeks. Our results showed that the activity of total antioxidant capacity (T-SOD) and glutathione peroxidase (GSH-Px), lysozyme (LZM), catalase (CAT) and acid phosphatase (ACP) in the A240 and A480 group were higher than that in the CT group (P < 0.05). The content of malondialdehyde (MDA) in AMP group was significantly lower than that in CT group (P < 0.05). Furthermore, we harvested the mid-gut and applied next-generation sequencing of 16S rDNA. The results showed that the abundance of Halomonas in AMP group was significantly lower than that in CT group. Functional analysis showed that the abundance of chloroalkane and chloroalkene degradation pathway increased significantly in AMP group. In conclusion, AMP enhanced the antioxidant capacity, non-specific immunity, and intestinal health of tsinling lenok trout.
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Affiliation(s)
- Fang Ma
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou District, Tianshui, 741000, Gansu, People's Republic of China.
| | - Ruilin Ma
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou District, Tianshui, 741000, Gansu, People's Republic of China
| | - Lei Zhao
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, South Xihe Road, Qinzhou District, Tianshui, 741000, Gansu, People's Republic of China
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46
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Rengifo-Lema MJ, Proaño-Bolaños C, Cuesta S, Meneses L. Computational modelling of the antimicrobial peptides Cruzioseptin-4 extracted from the frog Cruziohyla calcarifer and Pictuseptin-1 extracted from the frog Boana picturata. Sci Rep 2024; 14:4805. [PMID: 38413681 PMCID: PMC10899591 DOI: 10.1038/s41598-024-55171-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 02/21/2024] [Indexed: 02/29/2024] Open
Abstract
A computational study of the peptides Cruzioseptin-4 and Pictuseptin-1, identified in Cruziohyla calcarifer and Boana picturata respectively, has been carried out. The studies on Cruzioseptin-4 show that it is a cationic peptide with a chain of 23 amino acids that possess 52.17% of hydrophobic amino acids and a charge of + 1.2 at pH 7. Similarly, Pictuseptin-1 is a 22 amino acids peptide with a charge of + 3 at pH 7 and 45.45% of hydrophobic amino acids. Furthermore, the predominant secondary structure for both peptides is alpha-helical. The physicochemical properties were predicted using PepCalc and Bio-Synthesis; secondary structures using Jpred4 and PredictProtein; while molecular docking was performed using Autodock Vina. Geometry optimization of the peptides was done using the ONIOM hybrid method with the HF/6-31G basis set implemented in the Gaussian 09 program. Finally, the molecular docking study indicates that the viable mechanism of action for both peptides is through a targeted attack on the cell membrane of pathogens via electrostatic interactions with different membrane components, leading to cell lysis.
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Affiliation(s)
- María José Rengifo-Lema
- Escuela de Ciencias Químicas, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076 y Roca, Quito, Ecuador
| | | | - Sebastián Cuesta
- Escuela de Ciencias Químicas, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076 y Roca, Quito, Ecuador
| | - Lorena Meneses
- Escuela de Ciencias Químicas, Facultad de Ciencias Exactas y Naturales, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre 1076 y Roca, Quito, Ecuador.
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47
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Caselli L, Parra-Ortiz E, Micciulla S, Skoda MWA, Häffner SM, Nielsen EM, van der Plas MJA, Malmsten M. Boosting Membrane Interactions and Antimicrobial Effects of Photocatalytic Titanium Dioxide Nanoparticles by Peptide Coating. Small 2024:e2309496. [PMID: 38402437 DOI: 10.1002/smll.202309496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/30/2024] [Indexed: 02/26/2024]
Abstract
Photocatalytic nanoparticles offer antimicrobial effects under illumination due to the formation of reactive oxygen species (ROS), capable of degrading bacterial membranes. ROS may, however, also degrade human cell membranes and trigger toxicity. Since antimicrobial peptides (AMPs) may display excellent selectivity between human cells and bacteria, these may offer opportunities to effectively "target" nanoparticles to bacterial membranes for increased selectivity. Investigating this, photocatalytic TiO2 nanoparticles (NPs) are coated with the AMP LL-37, and ROS generation is found by C11 -BODIPY to be essentially unaffected after AMP coating. Furthermore, peptide-coated TiO2 NPs retain their positive ζ-potential also after 1-2 h of UV illumination, showing peptide degradation to be sufficiently limited to allow peptide-mediated targeting. In line with this, quartz crystal microbalance measurements show peptide coating to promote membrane binding of TiO2 NPs, particularly so for bacteria-like anionic and cholesterol-void membranes. As a result, membrane degradation during illumination is strongly promoted for such membranes, but not so for mammalian-like membranes. The mechanisms of these effects are elucidated by neutron reflectometry. Analogously, LL-37 coating promoted membrane rupture by TiO2 NPs for Gram-negative and Gram-positive bacteria, but not for human monocytes. These findings demonstrate that AMP coating may selectively boost the antimicrobial effects of photocatalytic NPs.
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Affiliation(s)
- Lucrezia Caselli
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- Department of Physical Chemistry 1, Lund University, Lund, SE-22100, Sweden
| | - Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- Novonesis, Biologiens Vej 2, Lyngby, DK-2800 Kgs, Denmark
| | - Samantha Micciulla
- Institut Laue-Langevin, CS 20156, Grenoble Cedex 9, 38042, France
- Laboratoire Interdisciplinaire de Physique (LIPhy), Saint Martin d'Hères, 38402, France
- Centre National de la Recherche Scientifique (CNRS), Saint-Martin-d'Hères, Auvergne-Rhône-Alpes, France
| | - Maximilian W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, OX11 0QX, UK
| | - Sara Malekkhaiat Häffner
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- RISE Research Institutes of Sweden, Malvinas väg 3, Stockholm, 114 86, Sweden
| | | | | | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, Copenhagen, DK-2100, Denmark
- Department of Physical Chemistry 1, Lund University, Lund, SE-22100, Sweden
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48
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Dong Q, Wang S, Miao Y, Luo H, Weng Z, Yu L. Novel antimicrobial peptides against Cutibacterium acnes designed by deep learning. Sci Rep 2024; 14:4529. [PMID: 38402320 PMCID: PMC10894229 DOI: 10.1038/s41598-024-55205-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/21/2024] [Indexed: 02/26/2024] Open
Abstract
The increasing prevalence of antibiotic resistance in Cutibacterium acnes (C. acnes) requires the search for alternative therapeutic strategies. Antimicrobial peptides (AMPs) offer a promising avenue for the development of new treatments targeting C. acnes. In this study, to design peptides with the specific inhibitory activity against C. acnes, we employed a deep learning pipeline with generators and classifiers, using transfer learning and pretrained protein embeddings, trained on publicly available data. To enhance the training data specific to C. acnes inhibition, we constructed a phylogenetic tree. A panel of 42 novel generated linear peptides was then synthesized and experimentally evaluated for their antimicrobial selectivity and activity. Five of them demonstrated their high potency and selectivity against C. acnes with MIC of 2-4 µg/mL. Our findings highlight the potential of these designed peptides as promising candidates for anti-acne therapeutics and demonstrate the power of computational approaches for the rational design of targeted antimicrobial peptides.
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Affiliation(s)
- Qichang Dong
- Shanghai MetaNovas Biotech Co., Ltd, Shanghai, 200120, China
| | - Shaohua Wang
- Shanghai MetaNovas Biotech Co., Ltd, Shanghai, 200120, China
| | - Ying Miao
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Heng Luo
- Shanghai MetaNovas Biotech Co., Ltd, Shanghai, 200120, China
| | - Zuquan Weng
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Lun Yu
- Metanovas Biotech Inc., Foster City, 94404, USA.
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49
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Mir Drikvand R, Sohrabi SM, Sohrabi SS, Samiei K. Molecular Identification and Characterization of Hevein Antimicrobial Peptide Genes in Two-Row and Six-Row Cultivars of Barley (Hordeum vulgare L.). Biochem Genet 2024:10.1007/s10528-024-10695-8. [PMID: 38386212 DOI: 10.1007/s10528-024-10695-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 01/09/2024] [Indexed: 02/23/2024]
Abstract
Heveins are one of the most important groups of plant antimicrobial peptides. So far, various roles in plant growth and development and in response to biotic and abiotic stresses have reported for heveins. The present study aimed to identify and characterize the hevein genes in two-row and six-row cultivars of barley. In total, thirteen hevein genes were identified in the genome of two-row and six-row cultivars of barley. The identified heveins were identical in two-row and six-row cultivars of barley and showed a high similarity with heveins from other plant species. The hevein coding sequences produced open reading frames (ORFs) ranged from 342 to 1002 bp. Most of the identified hevein genes were intronless, and the others had only one intron. The hevein ORFs produced proteins ranged from 113 to 333 amino acids. Search for conserved functional domains showed CBD and LYZ domains in barley heveins. All barley heveins comprised extracellular signal peptides ranged from 19 to 35 amino acids. The phylogenetic analysis divided barley heveins into two groups. The promoter analysis showed regulatory elements with different frequencies between two-row and six-row cultivars. These cis-acting elements included elements related to growth and development, hormone response, and environmental stresses. The expression analysis showed high expression level of heveins in root and reproductive organs of both two-row and six-row cultivars. The expression analysis also showed that barley heveins is induced by both biotic and abiotic stresses. The results of antimicrobial activity prediction showed the highest antimicrobial activity in CBD domain of barley heveins. The findings of the current study can improve our knowledge about the role of hevein genes in plant and can be used for future studies.
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Affiliation(s)
- Reza Mir Drikvand
- Department of Plant Genetics and Breeding, Islamic Azad University, Khorramabad Branch, Khorramabad, Iran.
| | - Seyyed Mohsen Sohrabi
- Department of Production Engineering and Plant Genetics, Faculty of Agriculture, Shahid Chamran University, Ahvaz, Iran
| | - Seyed Sajad Sohrabi
- Department of Production Engineering and Plant Genetics, Faculty of Agriculture, Lorestan University, Khorramabad, Iran
| | - Kamran Samiei
- Department of Plant Genetics and Breeding, Islamic Azad University, Khorramabad Branch, Khorramabad, Iran
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Carrillo JFC, Boaretto AG, Santana DJ, Silva DB. Skin secretions of Leptodactylidae (Anura) and their potential applications. J Venom Anim Toxins Incl Trop Dis 2024; 30:e20230042. [PMID: 38374940 PMCID: PMC10876013 DOI: 10.1590/1678-9199-jvatitd-2023-0042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/04/2023] [Indexed: 02/21/2024] Open
Abstract
The skin of anuran species is a protective barrier against predators and pathogens, showing also chemical defense by substances that represent a potential source for bioactive substances. This review describes the current chemical and biological knowledge from the skin secretions of Leptodactylidae species, one of the most diverse neotropical frog families. These skin secretions reveal a variety of substances such as amines (12), neuropeptides (16), and antimicrobial peptides (72). The amines include histamine and its methylated derivatives, tryptamine derivatives and quaternary amines. The peptides of Leptodactylidae species show molecular weight up to 3364 Da and ocellatins are the most reported. The peptides exhibit commonly glycine (G) or glycine-valine (GV) as C-terminal amino acids, and the most common N-terminal amino acids are glutamic acid (E), lysine (K), and valine (V). The substances from Leptodactylidae species have been evaluated against pathogenic microorganisms, particularly Escherichia coli and Staphylococcus aureus, and the most active peptides showed MIC of 1-15 µM. Furthermore, some compounds showed also pharmacological properties such as immunomodulation, treatment of degenerative diseases, anticancer, and antioxidant. Currently, only 9% of the species in this family have been properly studied, highlighting a large number of unstudied species such as an entire subfamily (Paratelmatobiinae). The ecological context, functions, and evolution of peptides and amines in this family are poorly understood and represent a large field for further exploration.
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Affiliation(s)
- Juan F. C. Carrillo
- Program in Ecology and Conservation, Institute of Biosciences,
Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
- Laboratory of Systematics and Biogeography of Amphibians and
Reptiles (Mapinguari), Institute of Biosciences, Federal University of Mato Grosso
do Sul, Campo Grande, MS, Brazil
- Laboratory of Natural Products and Mass Spectrometry (LaPNEM),
Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), Federal University
of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Amanda Galdi Boaretto
- Program in Ecology and Conservation, Institute of Biosciences,
Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
- Laboratory of Natural Products and Mass Spectrometry (LaPNEM),
Faculty of Pharmaceutical Sciences, Food and Nutrition (FACFAN), Federal University
of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Diego J. Santana
- Program in Ecology and Conservation, Institute of Biosciences,
Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
- Laboratory of Systematics and Biogeography of Amphibians and
Reptiles (Mapinguari), Institute of Biosciences, Federal University of Mato Grosso
do Sul, Campo Grande, MS, Brazil
| | - Denise Brentan Silva
- Program in Ecology and Conservation, Institute of Biosciences,
Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
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