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Prusty JS, Kumar A. LC-MS/MS profiling and analysis of Bacillus licheniformis extracellular proteins for antifungal potential against Candida albicans. J Proteomics 2024; 303:105228. [PMID: 38878881 DOI: 10.1016/j.jprot.2024.105228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/18/2024]
Abstract
Candida albicans, a significant human pathogenic fungus, employs hydrolytic proteases for host invasion. Conventional antifungal agents are reported with resistance issues from around the world. This study investigates the role of Bacillus licheniformis extracellular proteins (ECP) as effective antifungal peptides (AFPs). The aim was to identify and characterize the ECP of B. licheniformis through LC-MS/MS and bioinformatics analysis. LC-MS/MS analysis identified 326 proteins with 69 putative ECP, further analyzed in silico. Of these, 21 peptides exhibited antifungal properties revealed by classAMP tool and are predominantly anionic. Peptide-protein docking revealed interactions between AFPs like Peptide chain release factor 1 (Q65DV1_Seq1: SASEQLSDAK) and Putative carboxy peptidase (Q65IF0_Seq7: SDSSLEDQDFILESK) with C. albicans virulent SAP5 proteins (PDB ID 2QZX), forming hydrogen bonds and significant Pi-Pi interactions. The identification of B. licheniformis ECP is the novelty of the study that sheds light on their antifungal potential. The identified AFPs, particularly those interacting with bonafide pharmaceutical targets SAP5 of C. albicans represent promising avenues for the development of antifungal treatments with AFPs that could be the pursuit of a novel therapeutic strategy against C. albicans. SIGNIFICANCE OF STUDY: The purpose of this work was to carry out proteomic profiling of the secretome of B. licheniformis. Previously, the efficacy of Bacillus licheniformis extracellular proteins against Candida albicans was investigated and documented in a recently communicated manuscript, showcasing the antifungal activity of these proteins. In order to achieve high-throughput identification of ES (Excretory-secretory) proteins, the utilization of liquid chromatography tandem mass spectrometry (LC-MS) was utilized. There was a lack of comprehensive research on AFPs in B. licheniformis, nevertheless. The proteins secreted by B. licheniformis in liquid medium were initially discovered using liquid chromatography-tandem mass spectrometry (LC-MS) analysis and identification in order to immediately characterize the unidentified active metabolites in fermentation broth.
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Affiliation(s)
- Jyoti Sankar Prusty
- Department of Biotechnology, National Institute of Technology, Raipur 492010, CG, India
| | - Awanish Kumar
- Department of Biotechnology, National Institute of Technology, Raipur 492010, CG, India.
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2
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Santos MA, Silva FL, Lira BOV, Cardozo Fh JL, Vasconcelos AG, Araujo AR, Murad AM, Garay AV, Freitas SM, Leite JRSA, Bloch C, Ramada MHS, de Oliveira AL, Brand GD. Probing human proteins for short encrypted antimicrobial peptides reveals Hs10, a peptide with selective activity for gram-negative bacteria. Biochim Biophys Acta Gen Subj 2023; 1867:130265. [PMID: 36280021 DOI: 10.1016/j.bbagen.2022.130265] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/04/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND Some cationic and amphiphilic α-helical segments of proteins adsorb to prokaryotic membranes when synthesized as individual polypeptide sequences, resulting in broad and potent antimicrobial activity. However, amphiphilicity, a determinant physicochemical property for peptide-membrane interactions, can also be observed in some β-sheets. METHODS The software Kamal was used to scan the human reference proteome for short (7-11 amino acid residues) cationic and amphiphilic protein segments with the characteristic periodicity of β-sheets. Some of the uncovered peptides were chemically synthesized, and antimicrobial assays were conducted. Biophysical techniques were used to probe the molecular interaction of one peptide with phospholipid vesicles, lipopolysaccharides (LPS) and the bacterium Escherichia coli. RESULTS Thousands of compatible segments were found in human proteins, five were synthesized, and three presented antimicrobial activity in the micromolar range. Hs10, a nonapeptide fragment of the Complement C3 protein, could inhibit only the growth of tested Gram-negative microorganisms, presenting also little cytotoxicity to human fibroblasts. Hs10 interacted with LPS while transitioning from an unstructured segment to a β-sheet and increased the hydrodynamic radius of LPS particles. This peptide also promoted morphological alterations in E. coli cells. CONCLUSIONS Data presented herein introduce yet another molecular template to probe proteins in search for encrypted membrane-active segments and demonstrates that, using this approach, short peptides with low cytotoxicity and high selectivity to prokaryotic cells might be obtained. GENERAL SIGNIFICANCE This work widens the biotechnological potential of the human proteome as a source of antimicrobial peptides with application in human health.
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Affiliation(s)
- Michele A Santos
- Laboratório de Ressonância Magnética Nuclear, LRMN, Instituto de Química, Universidade de Brasília, Brasília, DF, Brazil; Laboratório de Síntese e Análise de Biomoléculas, LSAB, Instituto de Química, Universidade de Brasília, Brasília, DF, Brazil
| | - Fernanda L Silva
- Laboratório de Síntese e Análise de Biomoléculas, LSAB, Instituto de Química, Universidade de Brasília, Brasília, DF, Brazil
| | - Bianca O V Lira
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil
| | - José L Cardozo Fh
- Laboratório de Espectrometria de Massa, LEM, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | - Andreanne G Vasconcelos
- Núcleo de Pesquisa em Morfologia e Imunologia Aplicada, NuPMIA, Faculdade de Medicina, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, DF, Brazil
| | - Alyne R Araujo
- Núcleo de Pesquisa em Biodiversidade e Biotecnologia, Universidade Federal do Piauí, Parnaíba, PI, Brazil
| | - André M Murad
- Laboratório de Espectrometria de Massa, LEM, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | - Aisel V Garay
- Laboratório de Biofísica Molecular, Instituto de Biologia, Universidade de Brasília (IB-CEL/UnB), Campus Darcy Ribeiro, Asa Norte, Brasília, DF, Brazil
| | - Sonia M Freitas
- Laboratório de Biofísica Molecular, Instituto de Biologia, Universidade de Brasília (IB-CEL/UnB), Campus Darcy Ribeiro, Asa Norte, Brasília, DF, Brazil
| | - José Roberto S A Leite
- Núcleo de Pesquisa em Morfologia e Imunologia Aplicada, NuPMIA, Faculdade de Medicina, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, DF, Brazil
| | - Carlos Bloch
- Laboratório de Espectrometria de Massa, LEM, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | - Marcelo H S Ramada
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Programa de Pós-Graduação em Gerontologia, Universidade Católica de Brasília, Brasília, DF, Brazil
| | - Aline Lima de Oliveira
- Laboratório de Ressonância Magnética Nuclear, LRMN, Instituto de Química, Universidade de Brasília, Brasília, DF, Brazil
| | - Guilherme D Brand
- Laboratório de Síntese e Análise de Biomoléculas, LSAB, Instituto de Química, Universidade de Brasília, Brasília, DF, Brazil.
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Goh CJH, Cui L, Wong JH, Lewis J, Goh M, Kong KW, Yang LK, Alfatah M, Kanagasundaram Y, Hoon S, Arumugam P. Diethyl phthalate (DEP) perturbs nitrogen metabolism in Saccharomyces cerevisiae. Sci Rep 2022; 12:10237. [PMID: 35715465 PMCID: PMC9205984 DOI: 10.1038/s41598-022-14284-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/16/2022] [Indexed: 11/10/2022] Open
Abstract
Phthalates are ubiquitously used as plasticizers in various consumer care products. Diethyl phthalate (DEP), one of the main phthalates, elicits developmental and reproductive toxicities but the underlying mechanisms are not fully understood. Chemogenomic profiling of DEP in S. cerevisiae revealed that two transcription factors Stp1 and Dal81 involved in the Ssy1-Ptr5-Ssy5 (SPS) amino acid-sensing pathway provide resistance to DEP. Growth inhibition of yeast cells by DEP was stronger in poor nitrogen medium in comparison to nitrogen-rich medium. Addition of amino acids to nitrogen-poor medium suppressed DEP toxicity. Catabolism of amino acids via the Ehrlich pathway is required for suppressing DEP toxicity. Targeted metabolite analyses showed that DEP treatment alters the amino acid profile of yeast cells. We propose that DEP inhibits the growth of yeast cells by affecting nitrogen metabolism and discuss the implications of our findings on DEP-mediated toxic effects in humans.
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Affiliation(s)
| | - Liang Cui
- Antimicrobial Resistance Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, 1 CREATE Way, Singapore, 138602, Singapore
| | - Jin Huei Wong
- Bioinformatics Institute, 30 Biopolis Street, Singapore, 138671, Singapore
| | - Jacqueline Lewis
- Singapore Institute of Food and Biotechnology Innovation, 61 Biopolis Drive, Singapore, 138673, Singapore
| | - Megan Goh
- Singapore Institute of Food and Biotechnology Innovation, 61 Biopolis Drive, Singapore, 138673, Singapore
| | - Kiat Whye Kong
- Institute of Molecular and Cellular Biology, 61 Biopolis Drive, Singapore, 138673, Singapore
| | - Lay Kien Yang
- Singapore Institute of Food and Biotechnology Innovation, 61 Biopolis Drive, Singapore, 138673, Singapore
| | - Mohammad Alfatah
- Bioinformatics Institute, 30 Biopolis Street, Singapore, 138671, Singapore
| | - Yoganathan Kanagasundaram
- Singapore Institute of Food and Biotechnology Innovation, 61 Biopolis Drive, Singapore, 138673, Singapore
| | - Shawn Hoon
- Institute of Molecular and Cellular Biology, 61 Biopolis Drive, Singapore, 138673, Singapore
| | - Prakash Arumugam
- Singapore Institute of Food and Biotechnology Innovation, 61 Biopolis Drive, Singapore, 138673, Singapore. .,School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore.
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4
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Liang X, Liu K, Zhao P, Zhou J, Zhang F, He Y, Zhang H, Fareed MS, Lu Y, Xu Y, Zhang Z, Yan W, Wang K. The effects of incorporation of the counterparts and mimics of L-lysine on the antimicrobial activity, hemolytic activity, cytotoxicity and tryptic stability of antimicrobial peptide polybia-MPII. Amino Acids 2021; 54:123-135. [PMID: 34825276 DOI: 10.1007/s00726-021-03099-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 10/29/2021] [Indexed: 01/31/2023]
Abstract
Due to the limited effects of conventional antibiotics on the increasing emergence of drug-resistant bacteria and fungi, novel antimicrobial agents were urgently needed to alleviate this phenomenon. Nowadays, antimicrobial peptides are believed to be a promising candidate for a new generation of antimicrobial drugs. Antimicrobial peptide polybia-MPII (MPII) was first isolated from the venom of the social wasp Polybia paulista with a broad spectrum of antimicrobial activity. In the present study, the counterparts and mimics of cationic amino acids of Lys, such as Arg, His, Orn, Dab and Dap were employed to substitute Lys in the sequence of MPII. The effects of the incorporation of these amino acids on its antimicrobial activity, hemolytic activity, cytotoxicity, enzyme stability and therapeutic potential were explored. Our results showed that although the incorporation of Arg could improve its antimicrobial activity, there is no improvement in enzyme stability. The incorporation of His makes MPII exert its antimicrobial activity in a pH-dependent manner. Notably, incorporating Dap could effectively decrease its hemolytic activity and cytotoxicity and enhance its enzyme stability against trypsin. In conclusion, this study would provide an effective strategy to improve the bioavailability and metabolic stability of AMPs while decrease their hemolytic activity and cytotoxicity.
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Affiliation(s)
- Xiaolei Liang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.,Key Laboratory for Gynecologic Oncology of Gansu Province, Department of Gynecology, The First Hospital of Lanzhou University, Lanzhou University, West Donggang Road 1, Lanzhou, 730000, China
| | - Kexin Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.,School of Stomatology, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Ping Zhao
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | | | - Fangfang Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.,Key Laboratory for Gynecologic Oncology of Gansu Province, Department of Gynecology, The First Hospital of Lanzhou University, Lanzhou University, West Donggang Road 1, Lanzhou, 730000, China
| | - Yuhang He
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Hanru Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.,Department of Obstetrics and Gynecology, Gansu Provincial Maternity and Child Care Hospital, North Road 143, Qilihe District, Lanzhou, 730000, China
| | - Muhammad Subaan Fareed
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Yaqi Lu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Yue Xu
- The Second Clinical Medical College of Lanzhou University, Lanzhou University, Cuiyingmen 82, Lanzhou, 730000, China
| | - Zhewen Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Wenjin Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.
| | - Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.
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5
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Chou S, Li Q, Wu H, Li J, Chang YF, Shang L, Li J, Wang Z, Shan A. Selective Antifungal Activity and Fungal Biofilm Inhibition of Tryptophan Center Symmetrical Short Peptide. Int J Mol Sci 2021; 22:ijms22158231. [PMID: 34360998 PMCID: PMC8348200 DOI: 10.3390/ijms22158231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 11/24/2022] Open
Abstract
Candida albicans, an opportunistic fungus, causes dental caries and contributes to mucosal bacterial dysbiosis leading to a second infection. Furthermore, C.albicans forms biofilms that are resistant to medicinal treatment. To make matters worse, antifungal resistance has spread (albeit slowly) in this species. Thus, it has been imperative to develop novel, antifungal drug compounds. Herein, a peptide was engineered with the sequence of RRFSFWFSFRR-NH2; this was named P19. This novel peptide has been observed to exert disruptive effects on fungal cell membrane physiology. Our results showed that P19 displayed high binding affinity to lipopolysaccharides (LPS), lipoteichoic acids (LTA) and the plasma membrane phosphatidylinositol (PI), phosphatidylserine (PS), cardiolipin, and phosphatidylglycerol (PG), further indicating that the molecular mechanism of P19 was not associated with the receptor recognition, but rather related to competitive interaction with the plasma membrane. In addition, compared with fluconazole and amphotericin B, P19 has been shown to have a lower potential for resistance selection than established antifungal agents.
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Affiliation(s)
- Shuli Chou
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
| | - Qiuke Li
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
| | - Hua Wu
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
| | - Jinze Li
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
| | - Yung-Fu Chang
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA;
| | - Lu Shang
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
| | - Jiawei Li
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
| | - Zhihua Wang
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
| | - Anshan Shan
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (S.C.); (Q.L.); (H.W.); (J.L.); (L.S.); (J.L.); (Z.W.)
- Correspondence:
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6
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The Design of Alapropoginine, a Novel Conjugated Ultrashort Antimicrobial Peptide with Potent Synergistic Antimicrobial Activity in Combination with Conventional Antibiotics. Antibiotics (Basel) 2021; 10:antibiotics10060712. [PMID: 34199154 PMCID: PMC8231522 DOI: 10.3390/antibiotics10060712] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 12/01/2022] Open
Abstract
(1) Background: Antimicrobial resistance represents an urgent health dilemma facing the global human population. The development of novel antimicrobial agents is needed to face the rising number of resistant bacteria. Ultrashort antimicrobial peptides (USAMPs) are considered promising antimicrobial agents that meet the required criteria of novel antimicrobial drug development. (2) Methods: Alapropoginine was rationally designed by incorporating arginine (R), biphenylalanine (B), and naproxen to create an ultrashort hexapeptide. The antimicrobial activity of alapropoginine was evaluated against different strains of bacteria. The hemolytic activity of alapropoginine was also investigated against human erythrocytes. Finally, synergistic studies with antibiotics were performed using the checkerboard technique and the determination of the fractional inhibitory index. (3) Results: Alapropoginine displayed potent antimicrobial activities against reference and multi-drug-resistant bacteria with MIC values of as low as 28.6 µg/mL against methicillin-resistant S. aureus. Alapropoginine caused negligible toxicity toward human red blood cells. Moreover, the synergistic studies showed improved activities for the combined conventional antibiotics with a huge reduction in their antimicrobial concentrations. (4) Conclusions: The present study indicates that alapropoginine exhibits promising antimicrobial activity against reference and resistant strains of bacteria with negligible hemolytic activity. Additionally, the peptide displays synergistic or additive effects when combined with several antibiotics.
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Zhou J, Zhang L, He Y, Liu K, Zhang F, Zhang H, Lu Y, Yang C, Wang Z, Fareed MS, Liang X, Yan W, Wang K. An optimized analog of antimicrobial peptide Jelleine-1 shows enhanced antimicrobial activity against multidrug resistant P. aeruginosa and negligible toxicity in vitro and in vivo. Eur J Med Chem 2021; 219:113433. [PMID: 33878564 DOI: 10.1016/j.ejmech.2021.113433] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/13/2021] [Accepted: 03/30/2021] [Indexed: 01/30/2023]
Abstract
Due to the threat of escalating multi-drug resistant gram-negative bacteria to human health and life, novel antimicrobial agents against gram-negative pathogens are urgently needed. As antimicrobial peptides are not prone to induce bacteria resistance, they are believed to be one kind of promising class of potential antimicrobial agent candidates to combat multi-drug resistant bacteria for long-term use. Jelleine-1, first isolated from the royal jelly of honeybees, is a typical amphiphilic antimicrobial peptide and shows broad antimicrobial spectrum and negligible toxicity. To promote its antimicrobial activity and extend its potential of clinical use against multi-drug resistant gram-negative bacteria, novel analogs of jelleine-1 were designed, synthesized and their antimicrobial functions and toxicity were examined in this study. Our results showed that fine tuning of the cationic charge, polarity, and basicity of the sequence through amino acids substitution at position 3, 5, 7 and maintaining position 1, 4, 6, 8 unchanged could improve the bioactivity of jelleine-1 significantly. Meanwhile, we also found that the substitution of phenylalanine by tryptophan also could improve the antimicrobial activity of jelleine-1. Among all the analogs, analog 15, which is enriched in arginine and leucine, showed the most potent antimicrobial activity against both gram-negative and gram-positive bacteria, especially to multi-drug resistant Pseudomonas aeruginosa in vivo and in vitro. In addition, analog 15 also showed potent inhibition of the formation of multi-drug resistant P. aeruginosa biofilm and negligible toxicity, which was certified by MTT, hemolysis, blood assay, and biochemical analysis.
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Affiliation(s)
- Jingjing Zhou
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Lishi Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Yuhang He
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Kexin Liu
- School of Stomatology, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Fangfang Zhang
- Key Laboratory for Gynecologic Oncology of Gansu Province, Department of Gynecology, The First Hospital of Lanzhou University, Lanzhou University, West Donggang Road 1, Lanzhou, 730000, China
| | - Hanru Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China; Department of Obstetrics & Gynecology, Gansu Provincial Maternity and Child Care Hospital, North Road 143, Qilihe District, Lanzhou, 730000, China
| | - Yaqi Lu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Changyan Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Zhaopeng Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Muhammad Subaan Fareed
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Xiaolei Liang
- Key Laboratory for Gynecologic Oncology of Gansu Province, Department of Gynecology, The First Hospital of Lanzhou University, Lanzhou University, West Donggang Road 1, Lanzhou, 730000, China.
| | - Wenjin Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.
| | - Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China.
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8
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Makhlynets OV, Caputo GA. Characteristics and therapeutic applications of antimicrobial peptides. BIOPHYSICS REVIEWS 2021; 2:011301. [PMID: 38505398 PMCID: PMC10903410 DOI: 10.1063/5.0035731] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/31/2020] [Indexed: 12/20/2022]
Abstract
The demand for novel antimicrobial compounds is rapidly growing due to the phenomenon of antibiotic resistance in bacteria. In response, numerous alternative approaches are being taken including use of polymers, metals, combinatorial approaches, and antimicrobial peptides (AMPs). AMPs are a naturally occurring part of the immune system of all higher organisms and display remarkable broad-spectrum activity and high selectivity for bacterial cells over host cells. However, despite good activity and safety profiles, AMPs have struggled to find success in the clinic. In this review, we outline the fundamental properties of AMPs that make them effective antimicrobials and extend this into three main approaches being used to help AMPs become viable clinical options. These three approaches are the incorporation of non-natural amino acids into the AMP sequence to impart better pharmacological properties, the incorporation of AMPs in hydrogels, and the chemical modification of surfaces with AMPs for device applications. These approaches are being developed to enhance the biocompatibility, stability, and/or bioavailability of AMPs as clinical options.
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Affiliation(s)
- Olga V. Makhlynets
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, New York 13244, USA
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Hall F, Reddivari L, Liceaga AM. Identification and Characterization of Edible Cricket Peptides on Hypertensive and Glycemic In Vitro Inhibition and Their Anti-Inflammatory Activity on RAW 264.7 Macrophage Cells. Nutrients 2020; 12:nu12113588. [PMID: 33238450 PMCID: PMC7700588 DOI: 10.3390/nu12113588] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 01/25/2023] Open
Abstract
Recent studies continue to demonstrate the potential of edible insects as a protein base to obtain bioactive peptides applicable for functional food development. This study aimed at identifying antihypertensive, anti-glycemic, and anti-inflammatory peptides derived from the in vitro gastrointestinal digests of cricket protein hydrolysates. After sequential fractionation, the protein digest subfraction containing the lowest molecular weight (<0.5 kDa), hydrophobic (C18) and cationic peptides (IEX) was found responsible for the most bioactivity. The cationic peptide fraction significantly reduced (p < 0.05) α-amylase, α-glucosidase, and angiotensin converting enzyme (ACE) activity in vitro, and also inhibited the expression of NF-κB in RAW 264.7 macrophage cells. A total of 28 peptides were identified with mass spectrometry (LC–MS/MS) and de novo sequencing from the potent fraction. Three novel peptides YKPRP, PHGAP, and VGPPQ were chosen for the molecular docking studies. PHGAP and VGPPQ exhibited a higher degree of non-covalent interactions with the enzyme active site residues and binding energies comparable to captopril. Results from this study demonstrate the bioactive potential of edible cricket peptides, especially as ACE inhibitors.
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Affiliation(s)
- Felicia Hall
- Protein Chemistry and Bioactive Peptides Laboratory, Purdue University, West Lafayette, IN 47907, USA;
- Department of Food Science, Purdue University, 745 Agriculture Drive, West Lafayette, IN 47907, USA;
| | - Lavanya Reddivari
- Department of Food Science, Purdue University, 745 Agriculture Drive, West Lafayette, IN 47907, USA;
| | - Andrea M. Liceaga
- Protein Chemistry and Bioactive Peptides Laboratory, Purdue University, West Lafayette, IN 47907, USA;
- Department of Food Science, Purdue University, 745 Agriculture Drive, West Lafayette, IN 47907, USA;
- Correspondence: ; Tel.: +1-765-496-2460
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10
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Carratalá JV, Serna N, Villaverde A, Vázquez E, Ferrer-Miralles N. Nanostructured antimicrobial peptides: The last push towards clinics. Biotechnol Adv 2020; 44:107603. [PMID: 32738381 DOI: 10.1016/j.biotechadv.2020.107603] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/24/2020] [Accepted: 07/16/2020] [Indexed: 12/15/2022]
Abstract
Peptide drugs hold great potential for the treatment of infectious diseases due to their unconventional mechanisms of action, biocompatibility, biodegradability and ease of synthesis and modification. The increasing rising of bacterial strains resistant to classical antibiotics have pushed the development of new peptide-based antimicrobial therapies. In this context, over the past few years, different approaches have reached a clinical approval. Furthermore, the application of nanotechnological principles to the design of antimicrobial peptide-based composites increases even more the already known benefits of antimicrobial peptides as competent protein drugs. Then, we provide here an overview of the current strategies for antimicrobial peptide discovery and modification and the status of such peptides already under clinical development. In addition, we summarize the innovative formulation strategies for their application, focusing on the controlled self-assembly for the fabrication of antimicrobial nanostructures without the assistance of external nanocarriers, and with emphasis on bioengineering, design of ultra-short peptides and rising insights in bacterial selectivity.
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Affiliation(s)
- Jose Vicente Carratalá
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona 08193, Spain
| | - Naroa Serna
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona 08193, Spain.
| | - Antonio Villaverde
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona 08193, Spain.
| | - Esther Vázquez
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona 08193, Spain.
| | - Neus Ferrer-Miralles
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Bellaterra, Barcelona 08193, Spain
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11
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do Nascimento Dias J, de Souza Silva C, de Araújo AR, Souza JMT, de Holanda Veloso Júnior PH, Cabral WF, da Glória da Silva M, Eaton P, de Souza de Almeida Leite JR, Nicola AM, Albuquerque P, Silva-Pereira I. Mechanisms of action of antimicrobial peptides ToAP2 and NDBP-5.7 against Candida albicans planktonic and biofilm cells. Sci Rep 2020; 10:10327. [PMID: 32587287 PMCID: PMC7316759 DOI: 10.1038/s41598-020-67041-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/04/2020] [Indexed: 12/15/2022] Open
Abstract
Candida albicans is a major cause of human infections, ranging from relatively simple to treat skin and mucosal diseases to systemic life-threatening invasive candidiasis. Fungal infections treatment faces three major challenges: the limited number of therapeutic options, the toxicity of the available drugs, and the rise of antifungal resistance. In this study, we demonstrate the antifungal activity and mechanism of action of peptides ToAP2 and NDBP-5.7 against planktonic cells and biofilms of C. albicans. Both peptides were active against C. albicans cells; however, ToAP2 was more active and produced more pronounced effects on fungal cells. Both peptides affected C. albicans membrane permeability and produced changes in fungal cell morphology, such as deformations in the cell wall and disruption of ultracellular organization. Both peptides showed synergism with amphotericin B, while ToAP2 also presents a synergic effect with fluconazole. Besides, ToAP2 (6.25 µM.) was able to inhibit filamentation after 24 h of treatment and was active against both the early phase and mature biofilms of C. albicans. Finally, ToAP2 was protective in a Galleria mellonella model of infection. Altogether these results point to the therapeutic potential of ToAP2 and other antimicrobial peptides in the development of new therapies for C. albicans infections.
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Affiliation(s)
- Jhones do Nascimento Dias
- Department of Cell Biology, Institute of Biological Sciences, University of Brasília, Brasília, Brazil
| | - Calliandra de Souza Silva
- Department of Cell Biology, Institute of Biological Sciences, University of Brasília, Brasília, Brazil
| | - Alyne Rodrigues de Araújo
- Biotechnology and Biodiversity Center Research, Biotec, Federal University of the Delta of Parnaíba, Parnaíba, Piauí, Brazil
| | - Jessica Maria Teles Souza
- Biotechnology and Biodiversity Center Research, Biotec, Federal University of the Delta of Parnaíba, Parnaíba, Piauí, Brazil
| | | | - Wanessa Felix Cabral
- Center for Research in Applied Morphology and Immunology, NuPMIA, Faculty of Medicine, University of Brasilia, Brasilia, Brazil
| | - Maria da Glória da Silva
- Center for Research in Applied Morphology and Immunology, NuPMIA, Faculty of Medicine, University of Brasilia, Brasilia, Brazil
| | - Peter Eaton
- LAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences of the University of Porto, Porto, Portugal
| | | | | | | | - Ildinete Silva-Pereira
- Department of Cell Biology, Institute of Biological Sciences, University of Brasília, Brasília, Brazil.
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12
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Baibek A, Üçüncü M, Blackburn EA, Bradley M, Lilienkampf A. Wash‐free
,
peptide‐based
fluorogenic probes for microbial imaging. Pept Sci (Hoboken) 2020. [DOI: 10.1002/pep2.24167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Assel Baibek
- EaStCHEM School of Chemistry Joseph Black Building, University of Edinburgh Edinburgh UK
| | - Muhammed Üçüncü
- EaStCHEM School of Chemistry Joseph Black Building, University of Edinburgh Edinburgh UK
| | - Elizabeth A. Blackburn
- The Wellcome Centre for Cell Biology Michael Swann Building, University of Edinburgh Edinburgh UK
| | - Mark Bradley
- EaStCHEM School of Chemistry Joseph Black Building, University of Edinburgh Edinburgh UK
| | - Annamaria Lilienkampf
- EaStCHEM School of Chemistry Joseph Black Building, University of Edinburgh Edinburgh UK
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13
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Martins DB, Pacca CC, da Silva AMB, de Souza BM, de Almeida MTG, Palma MS, Arcisio-Miranda M, Dos Santos Cabrera MP. Comparing activity, toxicity and model membrane interactions of Jelleine-I and Trp/Arg analogs: analysis of peptide aggregation. Amino Acids 2020; 52:725-741. [PMID: 32367434 DOI: 10.1007/s00726-020-02847-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 04/23/2020] [Indexed: 01/06/2023]
Abstract
Increasing resistance in antibiotic and chemotherapeutic treatments has been pushing studies of design and evaluation of bioactive peptides. Designing relies on different approaches from minimalist sequences and endogenous peptides modifications to computational libraries. Evaluation relies on microbiological tests. Aiming a deeper understanding, we chose the octapeptide Jelleine-I (JI) for its selective and low toxicity profile, designed small modifications combining the substitutions of Phe by Trp and Lys/His by Arg and tested the antimicrobial and anticancer activity on melanoma cells. Biophysical methods identified environment-dependent modulation of aggregation, but critical aggregation concentrations of JI and analogs in buffer show that peptides start membrane interactions as monomers. The presence of model membranes increases or reduces the partial aggregation of peptides. Compared to JI, analog JIF2WR shows the lowest tendency to aggregation on bacterial model membranes. JI and analogs are lytic to model membranes. Their composition-dependent performance indicates preference for the higher charged anionic bilayers in line with their superior performance toward Staphylococcus aureus and Streptococcus pneumoniae. JIF2WR presented the higher partitioning, higher lytic activity and lower aggregated contents. Despite these increased membranolytic activities, JIF2WR exhibited comparable antimicrobial activity in relation to JI at the expenses of some loss in selectivity. We found that the substitution Phe/Trp (JIF2W) tends to decrease antimicrobial but to increase anticancer activity and aggregation on model membranes and the toxicity toward human cells. However, the concomitant substitution Lys/His by Arg (JIF2WR) modulates some of these tendencies, increasing both the antimicrobial and the anticancer activity while decreasing the aggregation tendency.
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Affiliation(s)
- Danubia Batista Martins
- Departamento de Física, Universidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas (Ibilce), R. Cristóvão Colombo, 2265, São José do Rio Preto, SP, 15054-000, Brazil
| | | | - Annielle Mendes Brito da Silva
- Laboratório de Neurobiologia Estrutural e Funcional (LaNEF), Departamento de Biofísica, Universidade Federal de São Paulo, R. Botucatu, 862, Edifício ECB, 7º andar, São Paulo, SP, 04023-062, Brazil
| | - Bibiana Monson de Souza
- Centro de Estudos de Insetos Sociais, Universidade Estadual Paulista (Unesp), Câmpus Rio Claro, Av. 24-A, 1515, Rio Claro, SP, 13506-900, Brazil
| | - Margarete Teresa Gottardo de Almeida
- Departamento de Doenças Dermatológicas Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, SP, 15090-000, Brazil
| | - Mario Sérgio Palma
- Centro de Estudos de Insetos Sociais, Universidade Estadual Paulista (Unesp), Câmpus Rio Claro, Av. 24-A, 1515, Rio Claro, SP, 13506-900, Brazil
| | - Manoel Arcisio-Miranda
- Laboratório de Neurobiologia Estrutural e Funcional (LaNEF), Departamento de Biofísica, Universidade Federal de São Paulo, R. Botucatu, 862, Edifício ECB, 7º andar, São Paulo, SP, 04023-062, Brazil
| | - Marcia Perez Dos Santos Cabrera
- Departamento de Física, Universidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas (Ibilce), R. Cristóvão Colombo, 2265, São José do Rio Preto, SP, 15054-000, Brazil.
- Departamento de Química e Ciências Ambientais, Universidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas (Ibilce), R. Cristóvão Colombo, 2265, São José do Rio Preto, SP, 15054-000, Brazil.
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14
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Alfatah M, Wong JH, Kong KW, Utama F, Hoon S, Arumugam P. Chemical-genetic interaction landscape of mono-(2-ethylhexyl)-phthalate using chemogenomic profiling in yeast. CHEMOSPHERE 2019; 228:219-231. [PMID: 31029968 DOI: 10.1016/j.chemosphere.2019.04.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 03/07/2019] [Accepted: 04/13/2019] [Indexed: 06/09/2023]
Abstract
Integration of chemical-genetic interaction data with biological functions provides a mechanistic understanding of how toxic compounds affect cells. Mono-(2-ethylhexyl)-phthalate (MEHP) is an active metabolite of di-(2-ethylhexyl)-phthalate (DEHP), a commonly used plasticizer. MEHP adversely affects human health causing hepatotoxicity and reproductive toxicity. How MEHP affects cellular physiology is not fully understood. We utilized a genome-wide competitive fitness-based assay called 'chemogenomic profiling' to determine the genetic interaction map of MEHP in Saccharomyces cerevisiae. Gene Ontology enrichment analysis of 218 genes that provide resistance to MEHP indicated that MEHP affects seven cellular processes namely: (1) cellular amino acid biosynthetic process, (2) sterol biosynthetic process, (3) cellular transport, (4) transcriptional and translational regulation, (5) protein glycosylation, (6) cytokinesis and cell morphogenesis and (7) ionic homeostasis. We show that MEHP protects yeast cells from membrane perturbing agents such as amphotericin B, dihydrosphingosine and phytosphingosine. Moreover, we also demonstrate that MEHP compromises the integrity of the yeast plasma membrane and cell wall. Our work provides a basis for further investigation of MEHP toxicity in humans.
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Affiliation(s)
- Mohammad Alfatah
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, Singapore 138671, Singapore.
| | - Jin Huei Wong
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, Singapore 138671, Singapore
| | - Kiat Whye Kong
- Molecular Engineering Laboratory, 61 Biopolis Drive, #03-12 Proteos, Singapore 13867, Singapore
| | - Felix Utama
- School of Chemical and Life Sciences, Singapore Polytechnic, 500 Dover Road, Singapore 139651, Singapore
| | - Shawn Hoon
- Molecular Engineering Laboratory, 61 Biopolis Drive, #03-12 Proteos, Singapore 13867, Singapore
| | - Prakash Arumugam
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, Singapore 138671, Singapore.
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15
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Wong JH, Alfatah M, Kong KW, Hoon S, Yeo WL, Ching KC, Jie Hui Goh C, Zhang MM, Lim YH, Wong FT, Arumugam P. Chemogenomic profiling in yeast reveals antifungal mode-of-action of polyene macrolactam auroramycin. PLoS One 2019; 14:e0218189. [PMID: 31181115 PMCID: PMC6557514 DOI: 10.1371/journal.pone.0218189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/28/2019] [Indexed: 12/23/2022] Open
Abstract
In this study, we report antifungal activity of auroramycin against Candida albicans, Candida tropicalis, and Cryptococcus neoformans. Auroramycin, a potent antimicrobial doubly glycosylated 24-membered polyene macrolactam, was previously isolated and characterized, following CRISPR-Cas9 mediated activation of a silent polyketide synthase biosynthetic gene cluster in Streptomyces rosesporous NRRL 15998. Chemogenomic profiling of auroramycin in yeast has linked its antifungal bioactivity to vacuolar transport and membrane organization. This was verified by disruption of vacuolar structure and membrane integrity of yeast cells with auroramycin treatment. Addition of salt but not sorbitol to the medium rescued the growth of auroramycin-treated yeast cells suggesting that auroramycin causes ionic stress. Furthermore, auroramycin caused hyperpolarization of the yeast plasma membrane and displayed a synergistic interaction with cationic hygromycin. Our data strongly suggest that auroramycin inhibits yeast cells by causing leakage of cations from the cytoplasm. Thus, auroramycin’s mode-of-action is distinct from known antifungal polyenes, reinforcing the importance of natural products in the discovery of new anti-infectives.
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Affiliation(s)
| | | | | | - Shawn Hoon
- Molecular Engineering Laboratory, Singapore
| | - Wan Lin Yeo
- Metabolic Engineering Research Laboratory, Institute of Chemical and Engineering Sciences, Singapore
| | - Kuan Chieh Ching
- Organic Chemistry, Institute of Chemical and Engineering Sciences, Singapore
| | | | - Mingzi M Zhang
- Metabolic Engineering Research Laboratory, Institute of Chemical and Engineering Sciences, Singapore
| | - Yee Hwee Lim
- Organic Chemistry, Institute of Chemical and Engineering Sciences, Singapore
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16
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In Vivo Applicability of Neosartorya fischeri Antifungal Protein 2 (NFAP2) in Treatment of Vulvovaginal Candidiasis. Antimicrob Agents Chemother 2019; 63:AAC.01777-18. [PMID: 30478163 DOI: 10.1128/aac.01777-18] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 11/12/2018] [Indexed: 12/13/2022] Open
Abstract
As a consequence of emerging numbers of vulvovaginitis cases caused by azole-resistant and biofilm-forming Candida species, fast and efficient treatment of this infection has become challenging. The problem is further exacerbated by the severe side effects of azoles as long-term-use medications in the recurrent form. There is therefore an increasing demand for novel and safely applicable effective antifungal therapeutic strategies. The small, cysteine-rich, and cationic antifungal proteins from filamentous ascomycetes are potential candidates, as they inhibit the growth of several Candida spp. in vitro; however, no information is available about their in vivo antifungal potency against yeasts. In the present study, we investigated the possible therapeutic application of one of their representatives in the treatment of vulvovaginal candidiasis, Neosartorya fischeri antifungal protein 2 (NFAP2). NFAP2 inhibited the growth of a fluconazole (FLC)-resistant Candida albicans strain isolated from a vulvovaginal infection, and it was effective against both planktonic cells and biofilm in vitro We observed that the fungal cell-killing activity of NFAP2 is connected to its pore-forming ability in the cell membrane. NFAP2 did not exert cytotoxic effects on primary human keratinocytes and dermal fibroblasts at the MIC in vitro. In vivo murine vulvovaginitis model experiments showed that NFAP2 significantly decreases the number of FLC-resistant C. albicans cells, and combined application with FLC enhances the efficacy. These results suggest that NFAP2 provides a feasible base for the development of a fundamental new, safely applicable mono- or polytherapeutic topical agent for the treatment of superficial candidiasis.
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17
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Alfatah M, Wong JH, Nge CE, Kong KW, Low KN, Leong CY, Crasta S, Munusamy M, Chang AML, Hoon S, Ng SB, Kanagasundaram Y, Arumugam P. Hypoculoside, a sphingoid base-like compound from Acremonium disrupts the membrane integrity of yeast cells. Sci Rep 2019; 9:710. [PMID: 30679518 PMCID: PMC6345779 DOI: 10.1038/s41598-018-35979-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 11/09/2018] [Indexed: 11/15/2022] Open
Abstract
We have isolated Hypoculoside, a new glycosidic amino alcohol lipid from the fungus Acremonium sp. F2434 belonging to the order Hypocreales and determined its structure by 2D-NMR (Nuclear Magnetic Resonance) spectroscopy. Hypoculoside has antifungal, antibacterial and cytotoxic activities. Homozygous profiling (HOP) of hypoculoside in Saccharomyces cerevisiae (budding yeast) revealed that several mutants defective in vesicular trafficking and vacuolar protein transport are sensitive to hypoculoside. Staining of budding yeast cells with the styryl dye FM4-64 indicated that hypoculoside damaged the vacuolar structure. Furthermore, the propidium iodide (PI) uptake assay showed that hypoculoside disrupted the plasma membrane integrity of budding yeast cells. Interestingly, the glycosidic moiety of hypoculoside is required for its deleterious effect on growth, vacuoles and plasma membrane of budding yeast cells.
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Affiliation(s)
- Mohammad Alfatah
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Jin Huei Wong
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Choy Eng Nge
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Kiat Whye Kong
- Molecular Engineering Laboratory, 61 Biopolis Drive, #03-12, Proteos, 13867, Singapore
| | - Kia Ngee Low
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Chung Yan Leong
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Sharon Crasta
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Madhaiyan Munusamy
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | | | - Shawn Hoon
- Molecular Engineering Laboratory, 61 Biopolis Drive, #03-12, Proteos, 13867, Singapore
| | - Siew Bee Ng
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore.
| | | | - Prakash Arumugam
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore.
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