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Kumari P, Banerjee SK, Murty US, Ravichandiran V, Mohan U. Harnessing the combined effect of antivirulence agent trans-chalcone with bactericidal curcumin against sortase A enzyme to tackle Gram-positive bacterial infections. Folia Microbiol (Praha) 2024; 69:639-652. [PMID: 37930610 DOI: 10.1007/s12223-023-01097-1] [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: 11/02/2022] [Accepted: 10/06/2023] [Indexed: 11/07/2023]
Abstract
Gram-positive bacteria are responsible for a wide range of infections in humans. In most Gram-positive bacteria, sortase A plays a significant role in attaching virulence factors to the bacteria's cell wall. These cell surface proteins play a significant role in virulence and pathogenesis. Even though antibiotics are available to treat these infections, there is a continuous search for an alternative strategy due to an increase in antibiotic resistance. Thus, using anti-sortase drugs to combat these bacterial infections may be a promising approach. Here, we describe a method for targeting Gram-positive bacterial infection by combining curcumin and trans-chalcone as sortase A inhibitors. We have used curcumin and trans-chalcone alone and in combination as a sortase A inhibitor. We have seen ~78%, ~43%, and ~94% inhibition when treated with curcumin, trans-chalcone, and a combination of both compounds, respectively. The compounds have also shown a significant effect on biofilm formation, IgG binding, protein A recruitment, and IgG deposition. We discovered that combining curcumin and trans-chalcone is more effective against Gram-positive bacteria than either compound alone. The present work demonstrated that a combination of these natural compounds could be used as an antivirulence therapy against Gram-positive bacterial infection.
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Affiliation(s)
- Poonam Kumari
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, 781101, India
| | - Sanjay K Banerjee
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, 781101, India
| | | | - Velayutham Ravichandiran
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, 700054, India
| | - Utpal Mohan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, 700054, India.
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2
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Olaru OT, Nitulescu GM, Codreanu AM, Calmuc VA, Venables L, van de Venter M, Gird CE, Duta-Bratu CG, Nitulescu G. Inhibitory Effects on Staphylococcus aureus Sortase A by Aesculus sp. Extracts and Their Toxicity Evaluation. PLANTS (BASEL, SWITZERLAND) 2024; 13:1405. [PMID: 38794475 PMCID: PMC11124902 DOI: 10.3390/plants13101405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
A promising strategy for combating bacterial infections involves the development of agents that disarm the virulence factors of pathogenic bacteria, thereby reducing their pathogenicity without inducing direct lethality. Sortase A, a crucial enzyme responsible for anchoring virulence factors to the cell surface of several pathogenic bacteria, has emerged as a possible target for antivirulence strategies. A series of hippocastanum species (Aesculus pavia, A. parviflora, Aesculus x carnea, and A. hippocastanum) were used to prepare ethanol- and water-based extracts for assessing their effect on Staphylococcus aureus sortase A. The extracts were characterized through HPLC analysis, and their polyphenols content was determined using the Folin-Ciocalteu method. The specific toxicity profile was evaluated in Daphnia magna using the median lethal concentration (LC50) and against the fibroblast MRHF cell line. The half maximal inhibitory concentration (IC50) values on sortase A, determined after 30 min of incubation, ranged from 82.70 to 304.31 µg/mL, with the A. pavia water extract exhibiting the highest inhibitory effect. The assessment of the A. pavia water extract on human fibroblasts revealed no significant signs of toxicity, even at a concentration of 500 µg/mL. This reduced toxicity was further validated through the Daphnia assay. These findings highlight the low toxicity and the potential of this extract as a promising source of future development of bacteria antivirulence solutions.
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Affiliation(s)
- Octavian Tudorel Olaru
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania; (O.T.O.); (C.E.G.); (C.-G.D.-B.); (G.N.)
| | - George Mihai Nitulescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania; (O.T.O.); (C.E.G.); (C.-G.D.-B.); (G.N.)
| | - Andreea Miruna Codreanu
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Cosbuc Street 98, 800385 Galati, Romania; (A.M.C.); (V.-A.C.)
| | - Valentina-Andreea Calmuc
- REXDAN Research Infrastructure, “Dunarea de Jos” University of Galati, George Cosbuc Street 98, 800385 Galati, Romania; (A.M.C.); (V.-A.C.)
| | - Luanne Venables
- Department of Biochemistry and Microbiology, Nelson Mandela University, P.O. Box 77000, Port Elizabeth 6031, South Africa;
| | - Maryna van de Venter
- Department of Biochemistry and Microbiology, Nelson Mandela University, P.O. Box 77000, Port Elizabeth 6031, South Africa;
| | - Cerasela Elena Gird
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania; (O.T.O.); (C.E.G.); (C.-G.D.-B.); (G.N.)
| | - Cosmina-Gabriela Duta-Bratu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania; (O.T.O.); (C.E.G.); (C.-G.D.-B.); (G.N.)
| | - Georgiana Nitulescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania; (O.T.O.); (C.E.G.); (C.-G.D.-B.); (G.N.)
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Vadakkan K, Sathishkumar K, Kuttiyachan Urumbil S, Ponnenkunnathu Govindankutty S, Kumar Ngangbam A, Devi Nongmaithem B. A review of chemical signaling mechanisms underlying quorum sensing and its inhibition in Staphylococcus aureus. Bioorg Chem 2024; 148:107465. [PMID: 38761705 DOI: 10.1016/j.bioorg.2024.107465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/29/2024] [Accepted: 05/14/2024] [Indexed: 05/20/2024]
Abstract
Staphylococcus aureus is a significant bacterium responsible for multiple infections and is a primary cause of fatalities among patients in hospital environments. The advent of pathogenic bacteria such as methicillin-resistant S. aureus revealed the shortcomings of employing antibiotics to treat bacterial infectious diseases. Quorum sensing enhances S. aureus's survivability through signaling processes. Targeting the key components of quorum sensing has drawn much interest nowadays as a promising strategy for combating infections caused by bacteria. Concentrating on the accessory gene regulator quorum-sensing mechanism is the most commonly suggested anti-virulence approach for S.aureus. Quorum quenching is a common strategy for controlling illnesses triggered by microorganisms since it reduces the pathogenicity of bacteria and improves bacterial biofilm susceptibility to antibiotics, thus providing an intriguing prospect for drug discovery. Quorum sensing inhibition reduces selective stresses and constrains the emergence of antibiotic resistance while limiting bacterial pathogenicity. This review examines the quorum sensing mechanisms involved in S. aureus, quorum sensing targets and gene regulation, environmental factors affecting quorum sensing, quorum sensing inhibition, natural products as quorum sensing inhibitory agents and novel therapeutical strategies to target quorum sensing in S. aureus as drug developing technique to augment conventional antibiotic approaches.
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Affiliation(s)
- Kayeen Vadakkan
- Department of Biotechnology, St. Mary's College (Autonomous), Thrissur, Kerala 680020, India; Manipur International University, Imphal, Manipur 795140, India.
| | - Kuppusamy Sathishkumar
- Center for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Thandalam, Chennai, Tamil Nadu 602105, India
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Amacher JF, Antos JM. Sortases: structure, mechanism, and implications for protein engineering. Trends Biochem Sci 2024:S0968-0004(24)00100-2. [PMID: 38692993 DOI: 10.1016/j.tibs.2024.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 03/22/2024] [Accepted: 04/15/2024] [Indexed: 05/03/2024]
Abstract
Sortase enzymes are critical cysteine transpeptidases on the surface of bacteria that attach proteins to the cell wall and are involved in the construction of bacterial pili. Due to their ability to recognize specific substrates and covalently ligate a range of reaction partners, sortases are widely used in protein engineering applications via sortase-mediated ligation (SML) strategies. In this review, we discuss recent structural studies elucidating key aspects of sortase specificity and the catalytic mechanism. We also highlight select recent applications of SML, including examples where fundamental studies of sortase structure and function have informed the continued development of these enzymes as tools for protein engineering.
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Affiliation(s)
- Jeanine F Amacher
- Department of Chemistry, Western Washington University, Bellingham, WA 98225, USA.
| | - John M Antos
- Department of Chemistry, Western Washington University, Bellingham, WA 98225, USA.
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Sabry MM, El-Halawany AM, Fahmy WG, Eltanany BM, Pont L, Benavente F, Attia AS, Sherbiny FF, Ibrahim RM. Evidence on the inhibitory effect of Brassica plants against Acinetobacter baumannii lipases: phytochemical analysis, in vitro, and molecular docking studies. BMC Complement Med Ther 2024; 24:164. [PMID: 38641582 PMCID: PMC11027383 DOI: 10.1186/s12906-024-04460-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 03/28/2024] [Indexed: 04/21/2024] Open
Abstract
BACKGROUND Infections caused by Acinetobacter baumannii are becoming a rising public health problem due to its high degree of acquired and intrinsic resistance mechanisms. Bacterial lipases penetrate and damage host tissues, resulting in multiple infections. Because there are very few effective inhibitors of bacterial lipases, new alternatives for treating A. baumannii infections are urgently needed. In recent years, Brassica vegetables have received a lot of attention since their phytochemical compounds have been directly linked to diverse antimicrobial actions by inhibiting the growth of various Gram-positive and Gram-negative bacteria, yeast, and fungi. Despite their longstanding antibacterial history, there is currently a lack of scientific evidence to support their role in the management of infections caused by the nosocomial bacterium, A. baumannii. This study aimed to address this gap in knowledge by examining the antibacterial and lipase inhibitory effects of six commonly consumed Brassica greens, Chinese cabbage (CC), curly and Tuscan kale (CK and TK), red and green Pak choi (RP and GP), and Brussels sprouts (BR), against A. baumannii in relation to their chemical profiles. METHODS The secondary metabolites of the six extracts were identified using LC-QTOF-MS/MS analysis, and they were subsequently correlated with the lipase inhibitory activity using multivariate data analysis and molecular docking. RESULTS In total, 99 metabolites from various chemical classes were identified in the extracts. Hierarchical cluster analysis (HCA) and principal component analysis (PCA) revealed the chemical similarities and variabilities among the specimens, with glucosinolates and phenolic compounds being the major metabolites. RP and GP showed the highest antibacterial activity against A. baumannii, followed by CK. Additionally, four species showed a significant effect on the bacterial growth curves and demonstrated relevant inhibition of A. baumannii lipolytic activity. CK showed the greatest inhibition (26%), followed by RP (21%), GP (21%), and TK (15%). Orthogonal partial least squares-discriminant analysis (OPLS-DA) pinpointed 9 metabolites positively correlated with the observed bioactivities. Further, the biomarkers displayed good binding affinities towards lipase active sites ranging from -70.61 to -30.91 kcal/mol, compared to orlistat. CONCLUSION This study emphasizes the significance of Brassica vegetables as a novel natural source of potential inhibitors of lipase from A. baumannii.
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Affiliation(s)
- Manal M Sabry
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Ali M El-Halawany
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Walaa G Fahmy
- Department of Microbiology & Immunology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Basma M Eltanany
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Laura Pont
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA·UB), University of Barcelona, Barcelona, 08028, Spain
- Serra Húnter Program, Generalitat de Catalunya, Barcelona, 08007, Spain
| | - Fernando Benavente
- Department of Chemical Engineering and Analytical Chemistry, Institute for Research on Nutrition and Food Safety (INSA·UB), University of Barcelona, Barcelona, 08028, Spain
| | - Ahmed S Attia
- Department of Microbiology & Immunology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
- School of Pharmacy, Newgiza University, Giza, 12577, Egypt
| | - Farag F Sherbiny
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Nasr city, Cairo, 11884, Egypt
| | - Rana M Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
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Kim YG, Lee JH, Kim SH, Park SY, Kim YJ, Ryu CM, Seo HW, Lee JT. Inhibition of Biofilm Formation in Cutibacterium acnes, Staphylococcus aureus, and Candida albicans by the Phytopigment Shikonin. Int J Mol Sci 2024; 25:2426. [PMID: 38397101 PMCID: PMC10888572 DOI: 10.3390/ijms25042426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
Skin microbiota, such as acne-related Cutibacterium acnes, Staphylococcus aureus, and fungal Candida albicans, can form polymicrobial biofilms with greater antimicrobial tolerance to traditional antimicrobial agents and host immune systems. In this study, the phytopigment shikonin was investigated against single-species and multispecies biofilms under aerobic and anaerobic conditions. Minimum inhibitory concentrations of shikonin were 10 µg/mL against C. acnes, S. aureus, and C. albicans, and at 1-5 µg/mL, shikonin efficiently inhibited single biofilm formation and multispecies biofilm development by these three microbes. Shikonin increased porphyrin production in C. acnes, inhibited cell aggregation and hyphal formation by C. albicans, decreased lipase production, and increased hydrophilicity in S. aureus. In addition, shikonin at 5 or 10 µg/mL repressed the transcription of various biofilm-related genes and virulence-related genes in C. acnes and downregulated the gene expression levels of the quorum-sensing agrA and RNAIII, α-hemolysin hla, and nuclease nuc1 in S. aureus, supporting biofilm inhibition. In addition, shikonin prevented multispecies biofilm development on porcine skin, and the antimicrobial efficacy of shikonin was recapitulated in a mouse infection model, in which it promoted skin regeneration. The study shows that shikonin inhibits multispecies biofilm development by acne-related skin microbes and might be useful for controlling bacterial infections.
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Affiliation(s)
- Yong-Guy Kim
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (Y.-G.K.); (J.-H.L.); (S.-H.K.); (S.-Y.P.)
| | - Jin-Hyung Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (Y.-G.K.); (J.-H.L.); (S.-H.K.); (S.-Y.P.)
| | - Sang-Hun Kim
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (Y.-G.K.); (J.-H.L.); (S.-H.K.); (S.-Y.P.)
| | - Sun-Young Park
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (Y.-G.K.); (J.-H.L.); (S.-H.K.); (S.-Y.P.)
| | - Yu-Jeong Kim
- Biosystems & Bioengineering Program, University of Science and Technology (UST), Daejeon Campus, Daejeon 34113, Republic of Korea; (Y.-J.K.); (C.-M.R.)
| | - Choong-Min Ryu
- Biosystems & Bioengineering Program, University of Science and Technology (UST), Daejeon Campus, Daejeon 34113, Republic of Korea; (Y.-J.K.); (C.-M.R.)
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Hwi-Won Seo
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Jin-Tae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (Y.-G.K.); (J.-H.L.); (S.-H.K.); (S.-Y.P.)
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Liu K, Tong J, Liu X, Liang D, Ren F, Jiang N, Hao Z, Li S, Wang Q. The Discovery of Novel Agents against Staphylococcus aureus by Targeting Sortase A: A Combination of Virtual Screening and Experimental Validation. Pharmaceuticals (Basel) 2023; 17:58. [PMID: 38256891 PMCID: PMC11100315 DOI: 10.3390/ph17010058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/12/2023] [Accepted: 12/16/2023] [Indexed: 01/24/2024] Open
Abstract
Staphylococcus aureus (S. aureus), commonly known as "superbugs", is a highly pathogenic bacterium that poses a serious threat to human health. There is an urgent need to replace traditional antibiotics with novel drugs to combat S. aureus. Sortase A (SrtA) is a crucial transpeptidase involved in the adhesion process of S. aureus. The reduction in virulence and prevention of S. aureus infections have made it a significant target for antimicrobial drugs. In this study, we combined virtual screening with experimental validation to identify potential drug candidates from a drug library. Three hits, referred to as Naldemedine, Telmisartan, and Azilsartan, were identified based on docking binding energy and the ratio of occupied functional sites of SrtA. The stability analysis manifests that Naldemedine and Telmisartan have a higher binding affinity to the hydrophobic pockets. Specifically, Telmisartan forms stable hydrogen bonds with SrtA, resulting in the highest binding energy. Our experiments prove that the efficiency of adhesion and invasion by S. aureus can be decreased without significantly affecting bacterial growth. Our work identifies Telmisartan as the most promising candidate for inhibiting SrtA, which can help combat S. aureus infection.
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Affiliation(s)
- Kang Liu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (K.L.); (J.T.); (D.L.); (F.R.); (N.J.); (Z.H.)
| | - Jiangbo Tong
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (K.L.); (J.T.); (D.L.); (F.R.); (N.J.); (Z.H.)
| | - Xu Liu
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China;
| | - Dan Liang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (K.L.); (J.T.); (D.L.); (F.R.); (N.J.); (Z.H.)
| | - Fangzhe Ren
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (K.L.); (J.T.); (D.L.); (F.R.); (N.J.); (Z.H.)
| | - Nan Jiang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (K.L.); (J.T.); (D.L.); (F.R.); (N.J.); (Z.H.)
| | - Zhenyu Hao
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (K.L.); (J.T.); (D.L.); (F.R.); (N.J.); (Z.H.)
| | - Shixin Li
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China; (K.L.); (J.T.); (D.L.); (F.R.); (N.J.); (Z.H.)
| | - Qiang Wang
- Department of the Heart and Great Vessels, Affiliated Hospital of Yangzhou University, Yangzhou 225009, China
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Chen F, Di H, Wang Y, Peng C, Chen R, Pan H, Yang CG, Liang H, Lan L. The enzyme activity of sortase A is regulated by phosphorylation in Staphylococcus aureus. Virulence 2023; 14:2171641. [PMID: 36694285 PMCID: PMC9928477 DOI: 10.1080/21505594.2023.2171641] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
In many Gram-positive bacteria, the transpeptidase enzyme sortase A (SrtA) anchors surface proteins to cell wall and plays a critical role in the bacterial pathogenesis. Here, we show that in Staphylococcus aureus, an important human pathogen, the SrtA is phosphorylated by serine/threonine protein kinase Stk1. S. aureus SrtA can also be phosphorylated by small-molecule phosphodonor acetyl phosphate (AcP) in vitro. We determined that various amino acid residues of S. aureus SrtA are subject to phosphorylation, primarily on its catalytic site residue cysteine-184 in the context of a bacterial cell lysate. Both Stk1 and AcP-mediated phosphorylation inhibited the enzyme activity of SrtA in vitro. Consequently, deletion of gene (i.e. stp1) encoding serine/threonine phosphatase Stp1, the corresponding phosphatase of Stk1, caused an increase in the phosphorylation level of SrtA. The stp1 deletion mutant mimicked the phenotypic traits of srtA deletion mutant (i.e. attenuated growth where either haemoglobin or haem as a sole iron source and reduced liver infections in a mouse model of systemic infection). Importantly, the phenotypic defects of the stp1 deletion mutant can be alleviated by overexpressing srtA. Taken together, our finding suggests that phosphorylation plays an important role in modulating the activity of SrtA in S. aureus.
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Affiliation(s)
- Feifei Chen
- College of Life Science, Northwest University, Xi’an, China,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China,Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Hongxia Di
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Yanhui Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China,University of Chinese Academy of Sciences, Beijing, China
| | - Chao Peng
- National Facility for Protein Science in Shanghai, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, China
| | - Rongrong Chen
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China,University of Chinese Academy of Sciences, Beijing, China
| | - Huiwen Pan
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China,University of Chinese Academy of Sciences, Beijing, China
| | - Cai-Guang Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China,Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China,University of Chinese Academy of Sciences, Beijing, China
| | - Haihua Liang
- College of Life Science, Northwest University, Xi’an, China,School of Medicine, Southern University of Science and Technology, Shenzhen, China,Haihua Liang School of Medicine Southern University of Science and Technology, Shenzhen, China
| | - Lefu Lan
- College of Life Science, Northwest University, Xi’an, China,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China,Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China,University of Chinese Academy of Sciences, Beijing, China,CONTACT Lefu Lan
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Yurchenko AN, Zhuravleva OI, Khmel OO, Oleynikova GK, Antonov AS, Kirichuk NN, Chausova VE, Kalinovsky AI, Berdyshev DV, Kim NY, Popov RS, Chingizova EA, Chingizov AR, Isaeva MP, Yurchenko EA. New Cyclopiane Diterpenes and Polyketide Derivatives from Marine Sediment-Derived Fungus Penicillium antarcticum KMM 4670 and Their Biological Activities. Mar Drugs 2023; 21:584. [PMID: 37999408 PMCID: PMC10672241 DOI: 10.3390/md21110584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/07/2023] [Accepted: 11/07/2023] [Indexed: 11/25/2023] Open
Abstract
Two new cyclopiane diterpenes and a new cladosporin precursor, together with four known related compounds, were isolated from the marine sediment-derived fungus Penicillium antarcticum KMM 4670, which was re-identified based on phylogenetic inference from ITS, BenA, CaM, and RPB2 gene regions. The absolute stereostructures of the isolated cyclopianes were determined using modified Mosher's method and quantum chemical calculations of the ECD spectra. The isolation from the natural source of two biosynthetic precursors of cladosporin from a natural source has been reported for the first time. The antimicrobial activities of the isolated compounds against Staphylococcus aureus, Escherichia coli, and Candida albicans as well as the inhibition of staphylococcal sortase A activity were investigated. Moreover, the cytotoxicity of the compounds to mammalian cardiomyocytes H9c2 was studied. As a result, new cyclopiane diterpene 13-epi-conidiogenone F was found to be a sortase A inhibitor and a promising anti-staphylococcal agent.
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Affiliation(s)
- Anton N. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Olesya I. Zhuravleva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia;
| | - Olga O. Khmel
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia;
| | - Galina K. Oleynikova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Alexandr S. Antonov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Natalya N. Kirichuk
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Viktoria E. Chausova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Anatoly I. Kalinovsky
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Dmitry V. Berdyshev
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Natalya Y. Kim
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Roman S. Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Ekaterina A. Chingizova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Artur R. Chingizov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Marina P. Isaeva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
| | - Ekaterina A. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Russky Island, Vladivostok 690022, Russia; (O.I.Z.); (A.S.A.); (N.N.K.); (V.E.C.); (A.I.K.); (D.V.B.); (N.Y.K.); (R.S.P.); (E.A.C.); (A.R.C.); (M.P.I.)
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10
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Francis D, Veeramanickathadathil Hari G, Koonthanmala Subash A, Bhairaddy A, Joy A. The biofilm proteome of Staphylococcus aureus and its implications for therapeutic interventions to biofilm-associated infections. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 138:327-400. [PMID: 38220430 DOI: 10.1016/bs.apcsb.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Staphylococcus aureus is a major healthcare concern due to its ability to inflict life-threatening infections and evolve antibiotic resistance at an alarming pace. It is frequently associated with hospital-acquired infections, especially device-associated infections. Systemic infections due to S. aureus are difficult to treat and are associated with significant mortality and morbidity. The situation is worsened by the ability of S. aureus to form social associations called biofilms. Biofilms embed a community of cells with the ability to communicate with each other and share resources within a polysaccharide or protein matrix. S. aureus establish biofilms on tissues and conditioned abiotic surfaces. Biofilms are hyper-tolerant to antibiotics and help evade host immune responses. Biofilms exacerbate the severity and recalcitrance of device-associated infections. The development of a biofilm involves various biomolecules, such as polysaccharides, proteins and nucleic acids, contributing to different structural and functional roles. Interconnected signaling pathways and regulatory molecules modulate the expression of these molecules. A comprehensive understanding of the molecular biology of biofilm development would help to devise effective anti-biofilm therapeutics. Although bactericidal agents, antimicrobial peptides, bacteriophages and nano-conjugated anti-biofilm agents have been employed with varying levels of success, there is still a requirement for effective and clinically viable anti-biofilm therapeutics. Proteins that are expressed and utilized during biofilm formation, constituting the biofilm proteome, are a particularly attractive target for anti-biofilm strategies. The proteome can be explored to identify potential anti-biofilm drug targets and utilized for rational drug discovery. With the aim of uncovering the biofilm proteome, this chapter explores the mechanism of biofilm formation and its regulation. Furthermore, it explores the antibiofilm therapeutics targeted against the biofilm proteome.
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Affiliation(s)
- Dileep Francis
- Department of Life Sciences, Kristu Jayanti College (Autonomous), Bengaluru, India.
| | | | | | - Anusha Bhairaddy
- Department of Life Sciences, Kristu Jayanti College (Autonomous), Bengaluru, India
| | - Atheene Joy
- Department of Life Sciences, Kristu Jayanti College (Autonomous), Bengaluru, India
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11
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Zhuravleva OI, Chingizova EA, Oleinikova GK, Starnovskaya SS, Antonov AS, Kirichuk NN, Menshov AS, Popov RS, Kim NY, Berdyshev DV, Chingizov AR, Kuzmich AS, Guzhova IV, Yurchenko AN, Yurchenko EA. Anthraquinone Derivatives and Other Aromatic Compounds from Marine Fungus Asteromyces cruciatus KMM 4696 and Their Effects against Staphylococcus aureus. Mar Drugs 2023; 21:431. [PMID: 37623712 PMCID: PMC10455474 DOI: 10.3390/md21080431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023] Open
Abstract
New anthraquinone derivatives acruciquinones A-C (1-3), together with ten known metabolites, were isolated from the obligate marine fungus Asteromyces cruciatus KMM 4696. Acruciquinone C is the first member of anthraquinone derivatives with a 6/6/5 backbone. The structures of isolated compounds were established based on NMR and MS data. The absolute stereoconfigurations of new acruciquinones A-C were determined using ECD and quantum chemical calculations (TDDFT approach). A plausible biosynthetic pathway of the novel acruciquinone C was proposed. Compounds 1-4 and 6-13 showed a significant antimicrobial effects against Staphylococcus aureus growth, and acruciquinone A (1), dendryol B (4), coniothyrinone B (7), and ω-hydroxypachybasin (9) reduced the activity of a key staphylococcal enzyme, sortase A. Moreover, the compounds, excluding 4, inhibited urease activity. We studied the effects of anthraquinones 1, 4, 7, and 9 and coniothyrinone D (6) in an in vitro model of skin infection when HaCaT keratinocytes were cocultivated with S. aureus. Anthraquinones significantly reduce the negative impact of S. aureus on the viability, migration, and proliferation of infected HaCaT keratinocytes, and acruciquinone A (1) revealed the most pronounced effect.
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Affiliation(s)
- Olesya I. Zhuravleva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Ekaterina A. Chingizova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Galina K. Oleinikova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Sofya S. Starnovskaya
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Alexandr S. Antonov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Natalia N. Kirichuk
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Alexander S. Menshov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Roman S. Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Natalya Yu. Kim
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Dmitrii V. Berdyshev
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Artur R. Chingizov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Alexandra S. Kuzmich
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Irina V. Guzhova
- Institute of Cytology Russian Academy of Sciences, Tikhoretskiy Ave. 4, St. Petersburg 194064, Russia;
| | - Anton N. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
| | - Ekaterina A. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (O.I.Z.); (E.A.C.)
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12
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Lazar V, Oprea E, Ditu LM. Resistance, Tolerance, Virulence and Bacterial Pathogen Fitness-Current State and Envisioned Solutions for the Near Future. Pathogens 2023; 12:pathogens12050746. [PMID: 37242416 DOI: 10.3390/pathogens12050746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/16/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023] Open
Abstract
The current antibiotic crisis and the global phenomena of bacterial resistance, inherited and non-inherited, and tolerance-associated with biofilm formation-are prompting dire predictions of a post-antibiotic era in the near future. These predictions refer to increases in morbidity and mortality rates as a consequence of infections with multidrug-resistant or pandrug-resistant microbial strains. In this context, we aimed to highlight the current status of the antibiotic resistance phenomenon and the significance of bacterial virulence properties/fitness for human health and to review the main strategies alternative or complementary to antibiotic therapy, some of them being already clinically applied or in clinical trials, others only foreseen and in the research phase.
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Affiliation(s)
- Veronica Lazar
- Department of Botany and Microbiology, Faculty of Biology, University of Bucharest, 1-3 Portocalelor Street, 060101 Bucharest, Romania
| | - Eliza Oprea
- Department of Botany and Microbiology, Faculty of Biology, University of Bucharest, 1-3 Portocalelor Street, 060101 Bucharest, Romania
| | - Lia-Mara Ditu
- Department of Botany and Microbiology, Faculty of Biology, University of Bucharest, 1-3 Portocalelor Street, 060101 Bucharest, Romania
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13
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Sortase A Inhibitor Protein Nanoparticle Formulations Demonstrate Antibacterial Synergy When Combined with Antimicrobial Peptides. Molecules 2023; 28:molecules28052114. [PMID: 36903360 PMCID: PMC10004702 DOI: 10.3390/molecules28052114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/09/2023] [Accepted: 02/21/2023] [Indexed: 02/26/2023] Open
Abstract
Sortase A (SrtA) is an enzyme which attaches proteins, including virulence factors, to bacterial cell walls. It is a potential target for developing anti-virulence agents against pathogenic and antimicrobial resistant bacteria. This study aimed to engineer 𝛽-lactoglobulin protein nanoparticles (PNPs) for encapsulating safe and inexpensive natural SrtA inhibitors (SrtAIs; trans-chalcone (TC), curcumin (CUR), quercetin (QC), and berberine (BR)) to improve their poor aqueous dispersibility, to screen for synergy with antimicrobial peptides (AMPs), and to reduce the cost, dose, and toxicity of AMPs. Minimum inhibitory concentration (MIC), checkerboard synergy, and cell viability assays were performed for SrtAI PNPs against Gram-positive (methicillin-sensitive and -resistant S. aureus) and Gram-negative (E. coli, P. aeruginosa) bacteria alone and combined with leading AMPs (pexiganan, indolicidin, and a mastoparan derivative). Each SrtAI PNP inhibited Gram-positive (MIC: 62.5-125 µg/mL) and Gram-negative (MIC: 31.3-500 µg/mL) bacterial growth. TC PNPs with pexiganan demonstrated synergy against each bacteria, while BR PNPs with pexiganan or indolicidin provided synergy towards S. aureus. Each SrtAI PNP inhibited SrtA (IC50: 25.0-81.8 µg/mL), and did not affect HEK-293 cell viability at their MIC or optimal synergistic concentrations with AMPs. Overall, this study provides a safe nanoplatform for enhancing antimicrobial synergy to develop treatments for superbug infections.
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14
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Raghuveer D, Pai VV, Murali TS, Nayak R. Exploring Anthraquinones as Antibacterial and Antifungal agents. ChemistrySelect 2023. [DOI: 10.1002/slct.202204537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Dhanush Raghuveer
- Department of Biotechnology Manipal School of Life Sciences Manipal Academy of Higher Education Manipal 576104 India
| | - V. Varsha Pai
- Department of Biotechnology Manipal School of Life Sciences Manipal Academy of Higher Education Manipal 576104 India
| | - Thokur Sreepathy Murali
- Department of Biotechnology Manipal School of Life Sciences Manipal Academy of Higher Education Manipal 576104 India
| | - Roopa Nayak
- Department of Biotechnology Manipal School of Life Sciences Manipal Academy of Higher Education Manipal 576104 India
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15
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Oligopeptide Sortase Inhibitor Modulates Staphylococcus aureus Cell Adhesion and Biofilm Formation. Antibiotics (Basel) 2022; 11:antibiotics11121836. [PMID: 36551492 PMCID: PMC9774600 DOI: 10.3390/antibiotics11121836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Prevention of bacterial adhesion is one of the most important antivirulence strategies for meeting the global challenge posed by antimicrobial resistance. We aimed to investigate the influence of a peptidic S. aureus sortase A inhibitor on bacterial adhesion to eukaryotic cells and biofilm formation as a potential method for reducing S. aureus virulence. The pentapeptide LPRDA was synthesized and characterized as a pure individual organic compound. Incubation of MSSA and MRSA strains with LPRDA induced a subsequent reduction in staphylococcal adhesion to Vero cells and biofilm formation, as visualized by microscopic and spectrophotometric methods, respectively. LPRDA did not have a cytotoxic effect on eukaryotic or bacterial cells. The pentapeptide LPRDA deserves further investigation using in vitro and in vivo models of Gram-positive bacteriemia as a potential antibacterial agent with an antiadhesive mechanism of action.
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16
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Nitulescu G, Mihai DP, Zanfirescu A, Stan MS, Gradinaru D, Nitulescu GM. Discovery of New Microbial Collagenase Inhibitors. LIFE (BASEL, SWITZERLAND) 2022; 12:life12122114. [PMID: 36556479 PMCID: PMC9781087 DOI: 10.3390/life12122114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/08/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
Bacterial virulence factors are mediating bacterial pathogenesis and infectivity. Collagenases are virulence factors secreted by several bacterial stains, such as Clostridium, Bacillus, Vibrio and Pseudomonas. These enzymes are among the most efficient degraders of collagen, playing a crucial role in host colonization. Thus, they are an important target for developing new anti-infective agents because of their pivotal roles in the infection process. A primary screening using a fluorescence resonance energy-transfer assay was used to experimentally evaluate the inhibitory activity of 77 compounds on collagenase A. Based on their inhibitory activity and chemical diversity, a small number of compounds was selected to determine the corresponding half maximal inhibitory con-centration (IC50). Additionally, we used molecular docking to get a better understanding of the enzyme-compound interaction. Several natural compounds (capsaicin, 4',5-dihydroxyflavone, curcumin, dihydrorobinetin, palmatine chloride, biochanin A, 2'-hydroxychalcone, and juglone) were identified as promising candidates for further development into useful anti-infective agents against infections caused by multi-drug-resistant bacterial pathogens which include collagenase A in their enzymatic set.
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Affiliation(s)
- Georgiana Nitulescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania
| | - Dragos Paul Mihai
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania
- Correspondence:
| | - Anca Zanfirescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania
| | - Miruna Silvia Stan
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Spl. Independentei, 050095 Bucharest, Romania
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, 050657 Bucharest, Romania
| | - Daniela Gradinaru
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania
| | - George Mihai Nitulescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, Traian Vuia 6, 020956 Bucharest, Romania
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17
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Shulga DA, Kudryavtsev KV. Theoretical Studies of Leu-Pro-Arg-Asp-Ala Pentapeptide (LPRDA) Binding to Sortase A of Staphylococcus aureus. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238182. [PMID: 36500275 PMCID: PMC9890316 DOI: 10.3390/molecules27238182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022]
Abstract
Sortase A (SrtA) of Staphylococcus aureus is a well-defined molecular target to combat the virulence of these clinically important bacteria. However up to now no efficient drugs or even clinical candidates are known, hence the search for such drugs is still relevant and necessary. SrtA is a complex target, so many straight-forward techniques for modeling using the structure-based drug design (SBDD) fail to produce the results they used to bring for other, simpler, targets. In this work we conduct theoretical studies of the binding/activity of Leu-Pro-Arg-Asp-Ala (LPRDA) polypeptide, which was recently shown to possess antivirulence activity against S. aureus. Our investigation was aimed at establishing a framework for the estimation of the key interactions and subsequent modification of LPRDA, targeted at non-peptide molecules, with better drug-like properties than the original polypeptide. Firstly, the available PDB structures are critically analyzed and the criteria to evaluate the quality of the ligand-SrtA complex geometry are proposed. Secondly, the docking protocol was investigated to establish its applicability to the LPRDA-SrtA complex prediction. Thirdly, the molecular dynamics studies were carried out to refine the geometries and estimate the stability of the complexes, predicted by docking. The main finding is that the previously reported partially chaotic movement of the β6/β7 and β7/β8 loops of SrtA (being the intrinsically disordered parts related to the SrtA binding site) is exaggerated when SrtA is complexed with LPRDA, which in turn reveals all the signs of the flexible and structurally disordered molecule. As a result, a wealth of plausible LPRDA-SrtA complex conformations are hard to distinguish using simple modeling means, such as docking. The use of more elaborate modeling approaches may help to model the system reliably but at the cost of computational efficiency.
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Affiliation(s)
- Dmitry A. Shulga
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
- Correspondence: (D.A.S.); (K.V.K.)
| | - Konstantin V. Kudryavtsev
- Laboratory of Molecular Pharmacology, Pirogov Russian National Research Medical University, Ostrovityanova Street 1, 117997 Moscow, Russia
- Correspondence: (D.A.S.); (K.V.K.)
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18
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Wang X, Luan Y, Hou J, Jiang T, Zhao Y, Song W, Wang L, Kong X, Guan J, Song D, Wang B, Li M. The protection effect of rhodionin against methicillin-resistant Staphylococcus aureus-induced pneumonia through sortase A inhibition. World J Microbiol Biotechnol 2022; 39:18. [PMID: 36409383 DOI: 10.1007/s11274-022-03457-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/02/2022] [Indexed: 11/22/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a zoonotic antibiotic-resistant pathogen that negatively impacts society from medical, veterinary, and societal standpoints. The search for alternative therapeutic strategies and innovative anti-infective agents is urgently needed. Among the pathogenic mechanisms of Staphylococcus aureus (S. aureus), sortase A is a virulence factor of great concern because it is highly linked with the ability of MRSA to invade the host. In this study, we identified that rhodionin, a natural compound of flavonoid glucosides, effectively inhibited the activity of SrtA without affecting the survival and growth of bacteria, and its half maximal inhibitory concentration (IC50) value was 22.85 μg/mL. In vitro, rhodionin prominently attenuated the virulence-related phenotype of SrtA by reducing the adhesion of S. aureus to fibrinogen, reducing the capacity of protein A (SpA) on the bacterial surface and biofilm formation. Subsequently, fluorescence quenching and molecular docking were performed to verify that rhodionin directly bonded to SrtA molecule with KA value of 6.22 × 105 L/mol. More importantly, rhodionin showed a significant protective effect on mice pneumonia model and improved the survival rate of mice. According to the above findings, rhodionin achieved efficacy in the treatment of MRSA-induced infections, which holds promising potential to be developed into a candidate used for MRSA-related infections.
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Affiliation(s)
- Xingye Wang
- Changchun University of Chinese Medicine, Changchun, China.,The Third Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China
| | - Yanhe Luan
- The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China
| | - Juan Hou
- Changchun University of Chinese Medicine, Changchun, China
| | - Tao Jiang
- Changchun University of Chinese Medicine, Changchun, China
| | - Yicheng Zhao
- Changchun University of Chinese Medicine, Changchun, China
| | - Wu Song
- Changchun University of Chinese Medicine, Changchun, China
| | - Li Wang
- Changchun University of Chinese Medicine, Changchun, China
| | - Xiangri Kong
- Changchun University of Chinese Medicine, Changchun, China.,The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China
| | - Jiyu Guan
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Danning Song
- Changchun University of Chinese Medicine, Changchun, China.
| | - Bingmei Wang
- Changchun University of Chinese Medicine, Changchun, China.
| | - Mingquan Li
- Changchun University of Chinese Medicine, Changchun, China. .,The Third Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China. .,The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, China.
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19
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Targeting the Holy Triangle of Quorum Sensing, Biofilm Formation, and Antibiotic Resistance in Pathogenic Bacteria. Microorganisms 2022; 10:microorganisms10061239. [PMID: 35744757 PMCID: PMC9228545 DOI: 10.3390/microorganisms10061239] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/12/2022] [Accepted: 06/14/2022] [Indexed: 12/12/2022] Open
Abstract
Chronic and recurrent bacterial infections are frequently associated with the formation of biofilms on biotic or abiotic materials that are composed of mono- or multi-species cultures of bacteria/fungi embedded in an extracellular matrix produced by the microorganisms. Biofilm formation is, among others, regulated by quorum sensing (QS) which is an interbacterial communication system usually composed of two-component systems (TCSs) of secreted autoinducer compounds that activate signal transduction pathways through interaction with their respective receptors. Embedded in the biofilms, the bacteria are protected from environmental stress stimuli, and they often show reduced responses to antibiotics, making it difficult to eradicate the bacterial infection. Besides reduced penetration of antibiotics through the intricate structure of the biofilms, the sessile biofilm-embedded bacteria show reduced metabolic activity making them intrinsically less sensitive to antibiotics. Moreover, they frequently express elevated levels of efflux pumps that extrude antibiotics, thereby reducing their intracellular levels. Some efflux pumps are involved in the secretion of QS compounds and biofilm-related materials, besides being important for removing toxic substances from the bacteria. Some efflux pump inhibitors (EPIs) have been shown to both prevent biofilm formation and sensitize the bacteria to antibiotics, suggesting a relationship between these processes. Additionally, QS inhibitors or quenchers may affect antibiotic susceptibility. Thus, targeting elements that regulate QS and biofilm formation might be a promising approach to combat antibiotic-resistant biofilm-related bacterial infections.
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20
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Bakr ME, Kashef MT, Hosny AEDMS, Ramadan MA. Effect of spdC gene expression on virulence and antibiotic resistance in clinical Staphylococcus aureus isolates. Int Microbiol 2022; 25:649-659. [PMID: 35608714 PMCID: PMC9307553 DOI: 10.1007/s10123-022-00249-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/30/2022] [Accepted: 05/10/2022] [Indexed: 11/29/2022]
Abstract
Surface protein display C (SpdC) protein was described as a novel virulence factor of Staphylococcus aureus that affects biofilm formation and pathogenesis and favors resistance to antimicrobials targeting cell wall. We evaluated the possible correlation between spdC gene expression level and virulence as well as antibiotic resistance phenotypes in S. aureus clinical isolates. The antimicrobial susceptibility of S. aureus clinical isolates (n = 100) was determined by the disk diffusion method. Vancomycin susceptibility was determined by the broth microdilution method. The level of the extracellular proteases and delta-hemolysin was evaluated by measuring the proteolysis and hemolysis zone diameters in skim milk and blood agar plates, respectively. Biofilm formation was assayed using the 96-well microtiter plate method. Most of the isolates (81%) were multidrug-resistant and about half of the isolates (49%) were methicillin-resistant S. aureus. Hemolysin, protease, and biofilm production were detectable in 79%, 71%, and 96% of the isolates. No significant correlation was detectable between the level of spdC gene expression and the activity of tested virulence factors or the antimicrobial resistance phenotype. Therefore, the role of SpdC protein as a virulence regulator in S. aureus needs further evaluation together with the determination of the predominant regulators for each virulence factor.
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Affiliation(s)
- Mayada E Bakr
- Department of Microbiology and Immunology, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt
| | - Mona T Kashef
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
| | - Alaa El-Dien M S Hosny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Mohammed A Ramadan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
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21
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Zhuravleva OI, Oleinikova GK, Antonov AS, Kirichuk NN, Pelageev DN, Rasin AB, Menshov AS, Popov RS, Kim NY, Chingizova EA, Chingizov AR, Volchkova OO, von Amsberg G, Dyshlovoy SA, Yurchenko EA, Guzhova IV, Yurchenko AN. New Antibacterial Chloro-Containing Polyketides from the Alga-Derived Fungus Asteromyces cruciatus KMM 4696. J Fungi (Basel) 2022; 8:jof8050454. [PMID: 35628710 PMCID: PMC9147975 DOI: 10.3390/jof8050454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 02/05/2023] Open
Abstract
Six new polyketides acrucipentyns A–F (1–6) were isolated from the alga-derived fungus Asteromyces cruciatus KMM 4696. Their structures were established based on spectroscopic methods. The absolute configurations of acrucipentyn A was assigned by the modified Mosher’s method and ROESY data analysis. Acrucipentyns A–E were identified to be the very first examples of chlorine-containing asperpentyn-like compounds. The cytotoxic and antimicrobial activities of the isolated compounds were examined. Acrucipentyns A–F were found as antimicrobial agents, which inhibited sortase A enzyme activity, bacterial growth and biofilm formation of Staphylococcus aureus and decreased LDH release from human keratinocytes HaCaT in S. aureus skin infection in an in vitro model.
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Affiliation(s)
- Olesya I. Zhuravleva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia; (O.O.V.); (S.A.D.)
- Correspondence: ; Tel.: +7-423-231-1168
| | - Galina K. Oleinikova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Alexandr S. Antonov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Natalia N. Kirichuk
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Dmitry N. Pelageev
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Anton B. Rasin
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Alexander S. Menshov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Roman S. Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Natalya Yu. Kim
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Ekaterina A. Chingizova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Artur R. Chingizov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Olga O. Volchkova
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia; (O.O.V.); (S.A.D.)
| | - Gunhild von Amsberg
- Laboratory of Experimental Oncology, Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald-Tumorzentrum, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany;
- Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Sergey A. Dyshlovoy
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia; (O.O.V.); (S.A.D.)
- Laboratory of Experimental Oncology, Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald-Tumorzentrum, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany;
- Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Ekaterina A. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
| | - Irina V. Guzhova
- Institute of Cytology Russian Academy of Sciences, Tikhoretskiy Ave. 4, 194064 St. Petersburg, Russia;
| | - Anton N. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia; (G.K.O.); (A.S.A.); (N.N.K.); (D.N.P.); (A.B.R.); (A.S.M.); (R.S.P.); (N.Y.K.); (E.A.C.); (A.R.C.); (E.A.Y.); (A.N.Y.)
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22
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Volynets GP, Barthels F, Hammerschmidt SJ, Moshynets OV, Lukashov SS, Starosyla SA, Vyshniakova HV, Iungin OS, Bdzhola VG, Prykhod'ko AO, Syniugin AR, Sapelkin VM, Yarmoluk SM, Schirmeister T. Identification of novel small-molecular inhibitors of Staphylococcus aureus sortase A using hybrid virtual screening. J Antibiot (Tokyo) 2022; 75:321-332. [PMID: 35440771 PMCID: PMC9016125 DOI: 10.1038/s41429-022-00524-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/30/2022] [Accepted: 04/06/2022] [Indexed: 01/18/2023]
Abstract
Staphylococcus aureus is one of the most dangerous pathogens commonly associated with high levels of morbidity and mortality. Sortase A is considered as a promising molecular target for the development of antistaphylococcal agents. Using hybrid virtual screening approach and FRET analysis, we have identified five compounds able to decrease the activity of sortase A by more than 50% at the concentration of 200 µM. The most promising compound was 2-(2-amino-3-chloro-benzoylamino)-benzoic acid which was able to inhibit S. aureus sortase A at the IC50 value of 59.7 µM. This compound was selective toward sortase A compared to other four cysteine proteases - cathepsin L, cathepsin B, rhodesain, and the SARS-CoV2 main protease. Microscale thermophoresis experiments confirmed that this compound bound sortase A with KD value of 189 µM. Antibacterial and antibiofilm assays also confirmed high specificity of the hit compound against two standard and three wild-type, S. aureus hospital infection isolates. The effect of the compound on biofilms produced by two S. aureus ATCC strains was also observed suggesting that the compound reduced biofilm formation by changing the biofilm structure and thickness.
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Affiliation(s)
- Galyna P Volynets
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine.
| | - Fabian Barthels
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University of Mainz, Staudinger Weg 5, 55128, Mainz, Germany
| | - Stefan J Hammerschmidt
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University of Mainz, Staudinger Weg 5, 55128, Mainz, Germany
| | - Olena V Moshynets
- Biofilm study group, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Sergiy S Lukashov
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Sergiy A Starosyla
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine.,RECEPTOR.AI, Boston, MA, USA
| | - Hanna V Vyshniakova
- L.V. Gromashevsky Institute of Epidemiology and Infectious Diseases NAMS of Ukraine, 5 Amosova St, 03038, Kyiv, Ukraine
| | - Olga S Iungin
- Department of Functional Genomics, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Volodymyr G Bdzhola
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Andrii O Prykhod'ko
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine.,Research and Development Department, Scientific Services Company Otava Ltd, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Anatolii R Syniugin
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Vladislav M Sapelkin
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Sergiy M Yarmoluk
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, the NAS of Ukraine, 150 Zabolotnogo St, 03143, Kyiv, Ukraine
| | - Tanja Schirmeister
- Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg-University of Mainz, Staudinger Weg 5, 55128, Mainz, Germany
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23
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Scutellarin potentiates vancomycin against lethal pneumonia caused by methicillin-resistant Staphylococcus aureus through dual inhibition of sortase A and caseinolytic peptidase P. Biochem Pharmacol 2022; 199:114982. [PMID: 35247333 DOI: 10.1016/j.bcp.2022.114982] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/12/2022] [Accepted: 02/22/2022] [Indexed: 01/09/2023]
Abstract
The strategy of targeting virulence factor has received great attention as it barely develops bacterial resistance. Sortase A (SrtA) and caseinolytic peptidase P (ClpP), as important virulence factors, are considered to be ideal pharmacological targets for methicillin-resistant Staphylococcus aureus (MRSA) infection. Through screening hundreds of compounds, we found scutellarin, a natural flavonoid, markedly inhibited SrtA and ClpP activities of MRSA strain USA300 with an IC50 of 53.64 μg/mL and 107.00 μg/mL, respectively. Subsequently, we observed that scutellarin could inhibit the SrtA-related virulence of MRSA. To demonstrate whether scutellarin directly binding to SrtA, fluorescence quenching assay and molecular docking were performed and the results indicated that scutellarin directly bonded to SrtA molecule with a KA value of 7.58 × 104 L/mol. In addition to direct SrtA inhibition, scutellarin could also inhibit hemolytic activity of S. aureus by inhibiting the expression of Hla in a SrtA-independent manner. Further assays confirmed that scutellarin inhibited hemolysis by inhibiting ClpP. The combination of scutellarin and vancomycin showed enhancing inhibition of USA300 in vitro and in vivo, evidenced by decreased MIC from 3 μg/mL to 0.5 μg/mL and increased survival and improvement of lung pathology in pneumonia mice. Taken together, these results suggest that scutellarin exhibited di-inhibitory effects on SrtA and ClpP of USA300. The di-inhibition of virulence factors by scutellarin combined with vancomycin to prevent MRSA invasion of A549 cells and pneumonia in mice, indicating that scutellarin is expected to be a potential adjuvant against MRSA in the future.
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24
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Candidates for Repurposing as Anti-Virulence Agents Based on the Structural Profile Analysis of Microbial Collagenase Inhibitors. Pharmaceutics 2021; 14:pharmaceutics14010062. [PMID: 35056958 PMCID: PMC8780423 DOI: 10.3390/pharmaceutics14010062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/21/2021] [Accepted: 12/26/2021] [Indexed: 01/17/2023] Open
Abstract
The pharmacological inhibition of the bacterial collagenases (BC) enzymes is considered a promising strategy to block the virulence of the bacteria without targeting the selection mechanism leading to drug resistance. The chemical structures of the Clostridium perfringens collagenase A (ColA) inhibitors were analyzed using Bemis-Murcko skeletons, Murcko frameworks, the type of plain rings, and docking studies. The inhibitors were classified based on their structural architecture and various scoring methods were implemented to predict the probability of new compounds to inhibit ColA and other BC. The analyses indicated that all compounds contain at least one aromatic ring, which is often a nitrobenzene fragment. 2-Nitrobenzene based compounds are, on average, more potent BC inhibitors compared to those derived from 4-nitrobenzene. The molecular descriptors MDEO-11, AATS0s, ASP-0, and MAXDN were determined as filters to identify new BC inhibitors and highlighted the necessity for a compound to contain at least three primary oxygen atoms. The DrugBank database was virtually screened using the developed methods. A total of 100 compounds were identified as potential BC inhibitors, of which, 10 are human approved drugs. Benzthiazide, entacapone, and lodoxamide were chosen as the best candidates for in vitro testing based on their pharmaco-toxicological profile.
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Selection of Promising Novel Fragment Sized S. aureus SrtA Noncovalent Inhibitors Based on QSAR and Docking Modeling Studies. Molecules 2021; 26:molecules26247677. [PMID: 34946760 PMCID: PMC8709105 DOI: 10.3390/molecules26247677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 11/22/2022] Open
Abstract
Sortase A (SrtA) of Staphylococcus aureus has been identified as a promising target to a new type of antivirulent drugs, and therefore, the design of lead molecules with a low nanomolar range of activity and suitable drug-like properties is important. In this work, we aimed at identifying new fragment-sized starting points to design new noncovalent S. aureus SrtA inhibitors by making use of the dedicated molecular motif, 5-arylpyrrolidine-2-carboxylate, which has been previously shown to be significant for covalent binding SrtA inhibitors. To this end, an in silico approach combining QSAR and molecular docking studies was used. The known SrtA inhibitors from the ChEMBL database with diverse scaffolds were first employed to derive descriptors and interpret their significance and correlation to activity. Then, the classification and regression QSAR models were built, which were used for rough ranking of the virtual library of the synthetically feasible compounds containing the dedicated motif. Additionally, the virtual library compounds were docked into the “activated” model of SrtA (PDB:2KID). The consensus ranking of the virtual library resulted in the most promising structures, which will be subject to further synthesis and experimental testing in order to establish new fragment-like molecules for further development into antivirulent drugs.
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26
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Identification of Novel Antistaphylococcal Hit Compounds Targeting Sortase A. Molecules 2021; 26:molecules26237095. [PMID: 34885677 PMCID: PMC8658998 DOI: 10.3390/molecules26237095] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 12/04/2022] Open
Abstract
Staphylococcus aureus (S. aureus) is a causative agent of many hospital- and community-acquired infections with the tendency to develop resistance to all known antibiotics. Therefore, the development of novel antistaphylococcal agents is of urgent need. Sortase A is considered a promising molecular target for the development of antistaphylococcal agents. The main aim of this study was to identify novel sortase A inhibitors. In order to find novel antistaphylococcal agents, we performed phenotypic screening of a library containing 15512 compounds against S. aureus ATCC43300. The molecular docking of hits was performed using the DOCK program and 10 compounds were selected for in vitro enzymatic activity inhibition assay. Two inhibitors were identified, N,N-diethyl-N′-(5-nitro-2-(quinazolin-2-yl)phenyl)propane-1,3-diamine (1) and acridin-9-yl-(1H-benzoimidazol-5-yl)-amine (2), which decrease sortase A activity with IC50 values of 160.3 µM and 207.01 µM, respectively. It was found that compounds 1 and 2 possess antibacterial activity toward 29 tested multidrug resistant S. aureus strains with MIC values ranging from 78.12 to 312.5 mg/L. These compounds can be used for further structural optimization and biological research.
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27
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Chingizova EA, Menchinskaya ES, Chingizov AR, Pislyagin EA, Girich EV, Yurchenko AN, Guzhova IV, Mikhailov VV, Aminin DL, Yurchenko EA. Marine Fungal Cerebroside Flavuside B Protects HaCaT Keratinocytes against Staphylococcus aureus Induced Damage. Mar Drugs 2021; 19:md19100553. [PMID: 34677452 PMCID: PMC8538176 DOI: 10.3390/md19100553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 12/29/2022] Open
Abstract
Cerebrosides are glycosylated sphingolipids, and in mammals they contribute to the pro-/anti-inflammatory properties and innate antimicrobial activity of the skin and mucosal surfaces. Staphylococcus aureus infection can develop, not only from minor scratches of the skin, but this pathogen can also actively promote epithelial breach. The effect of cerebroside flavuside B from marine sediment-derived fungus Penicillium islandicum (Aniva Bay, the Sea of Okhotsk) on viability, apoptosis, total caspase activity, and cell cycle in human epidermal keratinocytes HaCaT line co-cultivated with S. aureus, as well as influence of flavuside B on LPS-treated HaCaT cells were studied. Influence of flavuside B on bacterial growth and biofilm formation of S. aureus and its effect on the enzymatic activity of sortase A was also investigated. It was found S. aureus co-cultivated with keratinocytes induces caspase-depended apoptosis and cell death, arrest cell cycle in the G0/G1 phase, and increases in cellular immune inflammation. Cerebroside flavuside B has demonstrated its antimicrobial and anti-inflammatory properties, substantially eliminating all the negative consequences caused by co-cultivation of keratinocytes with S. aureus or bacterial LPS. The dual action of flavuside B may be highly effective in the treatment of bacterial skin lesions and will be studied in the future in in vivo experiments.
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Affiliation(s)
- Ekaterina A. Chingizova
- Laboratory of Bioassays and Mechanism of Action of Biologically Active Substances, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladivostoku 159, Vladivostok 690022, Russia; (E.A.C.); (E.S.M.); (E.A.P.); (D.L.A.)
| | - Ekaterina S. Menchinskaya
- Laboratory of Bioassays and Mechanism of Action of Biologically Active Substances, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladivostoku 159, Vladivostok 690022, Russia; (E.A.C.); (E.S.M.); (E.A.P.); (D.L.A.)
| | - Artur R. Chingizov
- Laboratory of Microbiology, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladi-vostoku 159, Vladivostok 690022, Russia; (A.R.C.); (V.V.M.)
| | - Evgeny A. Pislyagin
- Laboratory of Bioassays and Mechanism of Action of Biologically Active Substances, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladivostoku 159, Vladivostok 690022, Russia; (E.A.C.); (E.S.M.); (E.A.P.); (D.L.A.)
| | - Elena V. Girich
- Laboratory of Chemistry of Microbial Metabolites, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladivostoku 159, Vladivostok 690022, Russia; (E.V.G.); (A.N.Y.)
| | - Anton N. Yurchenko
- Laboratory of Chemistry of Microbial Metabolites, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladivostoku 159, Vladivostok 690022, Russia; (E.V.G.); (A.N.Y.)
| | - Irina V. Guzhova
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Ave., 4, St. Petersburg 194064, Russia;
| | - Valery V. Mikhailov
- Laboratory of Microbiology, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladi-vostoku 159, Vladivostok 690022, Russia; (A.R.C.); (V.V.M.)
| | - Dmitry L. Aminin
- Laboratory of Bioassays and Mechanism of Action of Biologically Active Substances, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladivostoku 159, Vladivostok 690022, Russia; (E.A.C.); (E.S.M.); (E.A.P.); (D.L.A.)
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, No.100, Shin-Chuan 1st Road, Sanmin Dist., Kaohsiung City 80708, Taiwan
| | - Ekaterina A. Yurchenko
- Laboratory of Bioassays and Mechanism of Action of Biologically Active Substances, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, Prosp. 100 Let Vladivostoku 159, Vladivostok 690022, Russia; (E.A.C.); (E.S.M.); (E.A.P.); (D.L.A.)
- Correspondence: ; Tel.: +7-423-231-9932
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Targeting Monoacylglycerol Lipase in Pursuit of Therapies for Neurological and Neurodegenerative Diseases. Molecules 2021; 26:molecules26185668. [PMID: 34577139 PMCID: PMC8468992 DOI: 10.3390/molecules26185668] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/11/2021] [Accepted: 09/15/2021] [Indexed: 11/17/2022] Open
Abstract
Neurological and neurodegenerative diseases are debilitating conditions, and frequently lack an effective treatment. Monoacylglycerol lipase (MAGL) is a key enzyme involved in the metabolism of 2-AG (2-arachidonoylglycerol), a neuroprotective endocannabinoid intimately linked to the generation of pro- and anti-inflammatory molecules. Consequently, synthesizing selective MAGL inhibitors has become a focus point in drug design and development. The purpose of this review was to summarize the diverse synthetic scaffolds of MAGL inhibitors concerning their potency, mechanisms of action and potential therapeutic applications, focusing on the results of studies published in the past five years. The main irreversible inhibitors identified were derivatives of hexafluoroisopropyl alcohol carbamates, glycol carbamates, azetidone triazole ureas and benzisothiazolinone, whereas the most promising reversible inhibitors were derivatives of salicylketoxime, piperidine, pyrrolidone and azetidinyl amides. We reviewed the results of in-depth chemical, mechanistic and computational studies on MAGL inhibitors, in addition to the results of in vitro findings concerning selectivity and potency of inhibitors, using the half maximal inhibitory concentration (IC50) as an indicator of their effect on MAGL. Further, for highlighting the potential usefulness of highly selective and effective inhibitors, we examined the preclinical in vivo reports regarding the promising therapeutic applications of MAGL pharmacological inhibition.
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