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Dhameliya TM, Vekariya DD, Bhatt PR, Kachroo T, Virani KD, Patel KR, Bhatt S, Dholakia SP. Synthetic account on indoles and their analogues as potential anti-plasmodial agents. Mol Divers 2024:10.1007/s11030-024-10842-8. [PMID: 38709459 DOI: 10.1007/s11030-024-10842-8] [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: 10/23/2023] [Accepted: 03/07/2024] [Indexed: 05/07/2024]
Abstract
Malaria caused by P. falciparum, has been recognized as one of the major infectious diseases causing the death of several patients as per the reports from the World Health Organization. In search of effective therapeutic agents against malaria, several research groups have started working on the design and development of novel heterocycles as anti-malarial agents. Heterocycles have been recognized as the pharmacophoric features for the different types of medicinally important activities. Among all these heterocycles, nitrogen containing aza-heterocycles should not be underestimated owing to their wide therapeutic window. Amongst the aza-heterocycles, indoles and fused indoles such as marinoquinolines, isocryptolepines and their regioisomers, manzamines, neocryptolenines, and indolones have been recognized as anti-malarial agents active against P. falciparum. The present work unleashes the synthetic attempts of anti-malarial indoles and fused indoles through cyclocondensation, Fischer-indole synthesis, etc. along with the brief discussions on structure-activity relationships, in vitro or in vivo studies for the broader interest of these medicinal chemists, working on their design and development as potential anti-malarial agents.
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Affiliation(s)
- Tejas M Dhameliya
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India.
- Present Address: Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India.
| | - Drashtiben D Vekariya
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Pooja R Bhatt
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Tarun Kachroo
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Kumkum D Virani
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Khushi R Patel
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Shelly Bhatt
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Sandip P Dholakia
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
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Ncube NB, Tukulula M, Govender KG. Leveraging computational tools to combat malaria: assessment and development of new therapeutics. J Cheminform 2024; 16:50. [PMID: 38698437 PMCID: PMC11064327 DOI: 10.1186/s13321-024-00842-z] [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: 01/10/2024] [Accepted: 04/12/2024] [Indexed: 05/05/2024] Open
Abstract
As the world grapples with the relentless challenges posed by diseases like malaria, the advent of sophisticated computational tools has emerged as a beacon of hope in the quest for effective treatments. In this study we delve into the strategies behind computational tools encompassing virtual screening, molecular docking, artificial intelligence (AI), and machine learning (ML). We assess their effectiveness and contribution to the progress of malaria treatment. The convergence of these computational strategies, coupled with the ever-increasing power of computing systems, has ushered in a new era of drug discovery, holding immense promise for the eradication of malaria. SCIENTIFIC CONTRIBUTION: Computational tools remain pivotal in drug design and development. They provide a platform for researchers to explore various treatment options and save both time and money in the drug development pipeline. It is imperative to assess computational techniques and monitor their effectiveness in disease control. In this study we examine renown computational tools that have been employed in the battle against malaria, the benefits and challenges these tools have presented, and the potential they hold in the future eradication of the disease.
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Affiliation(s)
- Nomagugu B Ncube
- School of Chemistry and Physics, College of Agriculture, Engineering and Science (CAES), University of KwaZulu-Natal, Westville Campus, Durban, 4001, South Africa
| | - Matshawandile Tukulula
- School of Chemistry and Physics, College of Agriculture, Engineering and Science (CAES), University of KwaZulu-Natal, Westville Campus, Durban, 4001, South Africa.
| | - Krishna G Govender
- Department of Chemical Sciences, University of Johannesburg, Johannesburg, 2028, South Africa.
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3
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Morales BGDV, Evaristo JAM, Oliveira GARDE, Garay AFG, Diaz JJAR, Arruda A, Pereira SS, Zanchi FB. Expression and purification of active shikimate dehydrogenase from Plasmodium falciparum. AN ACAD BRAS CIENC 2024; 96:e20230382. [PMID: 38422345 DOI: 10.1590/0001-3765202420230382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 10/02/2023] [Indexed: 03/02/2024] Open
Abstract
Plasmodium falciparum is known to cause severe malaria, current treatment consists in artemisinin-based combination therapy, but resistance can lead to treatment failure. Knowledge concerning P. falciparum essential proteins can be used for searching new antimalarials, among these a potential candidate is shikimate dehydrogenase (SDH), an enzyme part of the shikimate pathway which is responsible for producing endogenous aromatic amino acids. SDH from P. falciparum (PfSDH) is unexplored by the scientific community, therefore, this study aims to establish the first protocol for active PfSDH expression. Putative PfSDH nucleotide sequence was used to construct an optimized expression vector pET28a+PfSDH inserted in E. coli BL21(DE3). As a result, optimal expression conditions were acquired by varying IPTG and temperature through time. Western Blot analysis was applied to verify appropriate PfSDH expression, solubilization and purification started with lysis followed by two-steps IMAC purification. Enzyme activity was measured spectrophotometrically by NADPH oxidation, optimal PfSDH expression occur at 0.1 mM IPTG for 48 hours growing at 37 °C and shaking at 200 rpm, recombinant PfSDH obtained after purification was soluble, pure and its physiological catalysis was confirmed. Thus, this study describes the first protocol for heterologous expression of PfSDH in soluble and active form.
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Affiliation(s)
- Bruno G Dalla Vecchia Morales
- Oswaldo Cruz Foundation Rondônia (FIOCRUZ/RO), Laboratory of Bioinformatics and Medicinal Chemistry, BR 364, km 9,5, Centro, 76801-059 Porto Velho, RO, Brazil
- Federal University of Rondonia (UNIR), BR 364, km 9,5, Centro, 76801-059 Porto Velho, RO, Brazil
- São Lucas University Center (UniSL), Alexandre Guimarães Street, 1927, Areal, 76804-373 Porto Velho, RO, Brazil
| | - Joseph Albert M Evaristo
- Oswaldo Cruz Foundation Rondônia (FIOCRUZ/RO), Laboratory of Bioinformatics and Medicinal Chemistry, BR 364, km 9,5, Centro, 76801-059 Porto Velho, RO, Brazil
| | - George A R DE Oliveira
- Oswaldo Cruz Foundation Rondônia (FIOCRUZ/RO), Laboratory of Bioinformatics and Medicinal Chemistry, BR 364, km 9,5, Centro, 76801-059 Porto Velho, RO, Brazil
- Oswaldo Cruz Institute (IOC), Brasil Avenue 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil
| | - Ana Fidelina G Garay
- Centro para el Desarrollo de la Investigación Científica (CEDIC), P975+F58, Manduvira, Asuncion, Paraguay
| | - Jorge Javier A R Diaz
- Centro para el Desarrollo de la Investigación Científica (CEDIC), P975+F58, Manduvira, Asuncion, Paraguay
| | - Andrelisse Arruda
- Oswaldo Cruz Foundation Rondônia (FIOCRUZ/RO), Laboratory of Antibodies Engineering, Beira Street, 7671, Lagoa, 76812-245 Porto Velho, RO, Brazil
- Oswaldo Cruz Foundation Brasília (FIOCRUZ BRASÍLIA), L3 North Avenue, Gleba A, 70904-130 Brasília, DF, Brazil
| | - Soraya S Pereira
- Federal University of Rondonia (UNIR), BR 364, km 9,5, Centro, 76801-059 Porto Velho, RO, Brazil
- Oswaldo Cruz Foundation Rondônia (FIOCRUZ/RO), Laboratory of Antibodies Engineering, Beira Street, 7671, Lagoa, 76812-245 Porto Velho, RO, Brazil
| | - Fernando B Zanchi
- Oswaldo Cruz Foundation Rondônia (FIOCRUZ/RO), Laboratory of Bioinformatics and Medicinal Chemistry, BR 364, km 9,5, Centro, 76801-059 Porto Velho, RO, Brazil
- Federal University of Rondonia (UNIR), BR 364, km 9,5, Centro, 76801-059 Porto Velho, RO, Brazil
- Oswaldo Cruz Institute (IOC), Brasil Avenue 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil
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4
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Ramli AH, Mohd Faudzi SM. Diarylpentanoids, the privileged scaffolds in antimalarial and anti-infectives drug discovery: A review. Arch Pharm (Weinheim) 2023; 356:e2300391. [PMID: 37806761 DOI: 10.1002/ardp.202300391] [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: 07/18/2023] [Revised: 09/17/2023] [Accepted: 09/18/2023] [Indexed: 10/10/2023]
Abstract
Asia is a hotspot for infectious diseases, including malaria, dengue fever, tuberculosis, and the pandemic COVID-19. Emerging infectious diseases have taken a heavy toll on public health and the economy and have been recognized as a major cause of morbidity and mortality, particularly in Southeast Asia. Infectious disease control is a major challenge, but many surveillance systems and control strategies have been developed and implemented. These include vector control, combination therapies, vaccine development, and the development of new anti-infectives. Numerous newly discovered agents with pharmacological anti-infective potential are being actively and extensively studied for their bioactivity, toxicity, selectivity, and mode of action, but many molecules lose their efficacy over time due to resistance developments. These facts justify the great importance of the search for new, effective, and safe anti-infectives. Diarylpentanoids, a curcumin derivative, have been developed as an alternative with better bioavailability and metabolism as a therapeutic agent. In this review, the mechanisms of action and potential targets of antimalarial drugs as well as the classes of antimalarial drugs are presented. The bioactivity of diarylpentanoids as a potential scaffold for a new class of anti-infectives and their structure-activity relationships are also discussed in detail.
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Affiliation(s)
- Amirah H Ramli
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Siti M Mohd Faudzi
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia
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Ravindar L, Hasbullah SA, Rakesh KP, Hassan NI. Triazole hybrid compounds: A new frontier in malaria treatment. Eur J Med Chem 2023; 259:115694. [PMID: 37556947 DOI: 10.1016/j.ejmech.2023.115694] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/20/2023] [Accepted: 07/28/2023] [Indexed: 08/11/2023]
Abstract
Reviewing the advancements in malaria treatment, the emergence of triazole hybrid compounds stands out as a groundbreaking development. Combining the advantages of triazole and other moieties, these hybrid compounds offer a new frontier in the battle against malaria. Their potential as effective antimalarial agents has captured the attention of researchers and holds promise for overcoming the challenges posed by drug-resistant malaria strains. We focused on their broad spectrum of antimalarial activity of diverse hybridized 1,2,3-triazoles and 1,2,4-triazoles, structure-activity relationship (SAR), drug-likeness, bioavailability and pharmacokinetic properties reported since 2018 targeting multiple stages of the Plasmodium life cycle. This versatility makes them highly effective against both drug-sensitive and drug-resistant strains of P. falciparum, making them invaluable tools in regions where resistance is prevalent. The synergistic effects of combining the triazole moiety with other pharmacophores have resulted in even greater antimalarial potency. This approach has the potential to circumvent existing resistance mechanisms and provide a more sustainable solution to malaria treatment. While triazole hybrid compounds show great promise, further research and clinical trials are warranted to fully evaluate their safety, efficacy and long-term effects. As research progresses, these compounds can potentially revolutionize the field and contribute to global efforts to eradicate malaria, ultimately saving countless lives worldwide.
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Affiliation(s)
- Lekkala Ravindar
- Department of Chemical Sciences, Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - Siti Aishah Hasbullah
- Department of Chemical Sciences, Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - K P Rakesh
- Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Nurul Izzaty Hassan
- Department of Chemical Sciences, Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia.
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Bege M, Singh V, Sharma N, Debreczeni N, Bereczki I, Poonam, Herczegh P, Rathi B, Singh S, Borbás A. In vitro and in vivo antiplasmodial evaluation of sugar-modified nucleoside analogues. Sci Rep 2023; 13:12228. [PMID: 37507429 PMCID: PMC10382589 DOI: 10.1038/s41598-023-39541-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/26/2023] [Indexed: 07/30/2023] Open
Abstract
Drug-resistant Plasmodium falciparum (Pf) infections are a major burden on the population and the healthcare system. The establishment of Pf resistance to most existing antimalarial therapies has complicated the problem, and the emergence of resistance to artemisinin derivatives is even more concerning. It is increasingly difficult to cure malaria patients due to the limited availability of effective antimalarial drugs, resulting in an urgent need for more efficacious and affordable treatments to eradicate this disease. Herein, new nucleoside analogues including morpholino-nucleoside hybrids and thio-substituted nucleoside derivatives were prepared and evaluated for in vitro and in vivo antiparasitic activity that led a few hits especially nucleoside-thiopyranoside conjugates, which are highly effective against Pf3D7 and PfRKL-9 strains in submicromolar concentration. One adenosine derivative and four pyrimidine nucleoside analogues significantly reduced the parasite burden in mouse models infected with Plasmodium berghei ANKA. Importantly, no significant hemolysis and cytotoxicity towards human cell line (RAW) was observed for the hits, suggesting their safety profile. Preliminary research suggested that these thiosugar-nucleoside conjugates could be used to accelerate the antimalarial drug development pipeline and thus deserve further investigation.
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Affiliation(s)
- Miklós Bege
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem Tér 1, Debrecen, 4032, Hungary
- Institute of Healthcare Industry, University of Debrecen, Nagyerdei Körút 98, Debrecen, 4032, Hungary
- MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem Tér 1, Debrecen, 4032, Hungary
| | - Vigyasa Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ, 85721, USA
| | - Neha Sharma
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, Delhi, India
| | - Nóra Debreczeni
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem Tér 1, Debrecen, 4032, Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem Tér 1, Debrecen, 4032, Hungary
- National Laboratory of Virology, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary
| | - Poonam
- Department of Chemistry, Miranda House, University of Delhi, Delhi, 110007, India
- Delhi School of Public Health, Institution of Eminence (IoE), University of Delhi, Delhi, 110007, India
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem Tér 1, Debrecen, 4032, Hungary
| | - Brijesh Rathi
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, Delhi, India.
- Delhi School of Public Health, Institution of Eminence (IoE), University of Delhi, Delhi, 110007, India.
| | - Shailja Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem Tér 1, Debrecen, 4032, Hungary.
- National Laboratory of Virology, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary.
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Fitri LE, Pawestri AR, Winaris N, Endharti AT, Khotimah ARH, Abidah HY, Huwae JTR. Antimalarial Drug Resistance: A Brief History of Its Spread in Indonesia. Drug Des Devel Ther 2023; 17:1995-2010. [PMID: 37431492 PMCID: PMC10329833 DOI: 10.2147/dddt.s403672] [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: 01/20/2023] [Accepted: 04/25/2023] [Indexed: 07/12/2023] Open
Abstract
Malaria remains to be a national and global challenge and priority, as stated in the strategic plan of the Indonesian Ministry of Health and Sustainable Development Goals. In Indonesia, it is targeted that malaria elimination can be achieved by 2030. Unfortunately, the development and spread of antimalarial resistance inflicts a significant risk to the national malaria control programs which can lead to increased malaria morbidity and mortality. In Indonesia, resistance to widely used antimalarial drugs has been reported in two human species, Plasmodium falciparum and Plasmodium vivax. With the exception of artemisinin, resistance has surfaced towards all classes of antimalarial drugs. Initially, chloroquine, sulfadoxine-pyrimethamine, and primaquine were the most widely used antimalarial drugs. Regrettably, improper use has supported the robust spread of their resistance. Chloroquine resistance was first reported in 1974, while sulfadoxine-pyrimethamine emerged in 1979. Twenty years later, most provinces had declared treatment failures of both drugs. Molecular epidemiology suggested that variations in pfmdr1 and pfcrt genes were associated with chloroquine resistance, while dhfr and dhps genes were correlated with sulfadoxine-pyrimethamine resistance. Additionally, G453W, V454C and E455K of pfk13 genes appeared to be early warning sign to artemisinin resistance. Here, we reported mechanisms of antimalarial drugs and their development of resistance. This insight could provide awareness toward designing future treatment guidelines and control programs in Indonesia.
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Affiliation(s)
- Loeki Enggar Fitri
- Department of Parasitology Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- AIDS, Toxoplasma, Opportunistic Disease and Malaria Research Group, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Aulia Rahmi Pawestri
- Department of Parasitology Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- AIDS, Toxoplasma, Opportunistic Disease and Malaria Research Group, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Nuning Winaris
- Department of Parasitology Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- AIDS, Toxoplasma, Opportunistic Disease and Malaria Research Group, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Agustina Tri Endharti
- Department of Parasitology Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
| | - Alif Raudhah Husnul Khotimah
- Master Program in Biomedical Science, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- Medical Doctor Profession Education, Faculty of Medical and Health Science, Maulana Malik Ibrahim State Islamic University, Malang, Indonesia
| | - Hafshah Yasmina Abidah
- Master Program in Biomedical Science, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- Medical Doctor Profession Education, Faculty of Medical and Health Science, Maulana Malik Ibrahim State Islamic University, Malang, Indonesia
| | - John Thomas Rayhan Huwae
- Master Program in Biomedical Science, Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
- Medical Doctor Profession Study Program Faculty of Medicine, Universitas Brawijaya, Malang, Indonesia
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Gehlot P, Vyas VK. Recent advances on patents of Plasmodium falciparum dihydroorotate dehydrogenase ( PfDHODH) inhibitors as antimalarial agents. Expert Opin Ther Pat 2023; 33:579-596. [PMID: 37942637 DOI: 10.1080/13543776.2023.2280596] [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: 06/26/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
INTRODUCTION Pyrimidine nucleotides are essential for the parasite's growth and replication. Parasites have only a de novo pathway for the biosynthesis of pyrimidine nucleotides. Dihydroorotate dehydrogenase (DHODH) enzyme is involved in the rate-limiting step of the pyrimidine biosynthesis pathway. DHODH is a biochemical target for the discovery of new antimalarial agents. AREA COVERED This review discussed the development of patented PfDHODH inhibitors published between 2007 and 2023 along with their chemical structures and activities. EXPERT OPINION PfDHODH enzyme is involved in the rate-limiting fourth step of the pyrimidine biosynthesis pathway. Thus, inhibition of PfDHODH using species-selective inhibitors has drawn much attention for treating malaria because they inhibit parasite growth without affecting normal human functions. Looking at the current scenario of antimalarial drug resistance with most of the available antimalarial drugs, there is a huge need for targeted newer agents. Newer agents with unique mechanisms of action may be devoid of drug toxicity, adverse effects, and the ability of parasites to quickly gain resistance, and PfDHODH inhibitors can be those newer agents. Many PfDHODH inhibitors were patented in the past, and the dependency of Plasmodium on de novo pyrimidine provided a new approach for the development of novel antimalarial agents.
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Affiliation(s)
- Pinky Gehlot
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad, India
| | - Vivek K Vyas
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad, India
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Breiterová KH, Ritomská A, Fontinha D, Křoustková J, Suchánková D, Hošťálková A, Šafratová M, Kohelová E, Peřinová R, Vrabec R, Francisco D, Prudêncio M, Cahlíková L. Derivatives of Amaryllidaceae Alkaloid Ambelline as Selective Inhibitors of Hepatic Stage of Plasmodium berghei Infection In Vitro. Pharmaceutics 2023; 15:pharmaceutics15031007. [PMID: 36986868 PMCID: PMC10056443 DOI: 10.3390/pharmaceutics15031007] [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: 12/27/2022] [Revised: 02/28/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
The incidence rate of malaria and the ensuing mortality prompts the development of novel antimalarial drugs. In this work, the activity of twenty-eight Amaryllidaceae alkaloids (1-28) belonging to seven different structural types was assessed, as well as twenty semisynthetic derivatives of the β-crinane alkaloid ambelline (28a-28t) and eleven derivatives of the α-crinane alkaloid haemanthamine (29a-29k) against the hepatic stage of Plasmodium infection. Six of these derivatives (28h, 28m, 28n and 28r-28t) were newly synthesized and structurally identified. The most active compounds, 11-O-(3,5-dimethoxybenzoyl)ambelline (28m) and 11-O-(3,4,5-trimethoxybenzoyl)ambelline (28n), displayed IC50 values in the nanomolar range of 48 and 47 nM, respectively. Strikingly, the derivatives of haemanthamine (29) with analogous substituents did not display any significant activity, even though their structures are quite similar. Interestingly, all active derivatives were strictly selective against the hepatic stage of infection, as they did not demonstrate any activity against the blood stage of Plasmodium infection. As the hepatic stage is a bottleneck of the plasmodial infection, liver-selective compounds can be considered crucial for further development of the malaria prophylactics.
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Affiliation(s)
- Kateřina Hradiská Breiterová
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Aneta Ritomská
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Diana Fontinha
- Prudêncio Lab, Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Edf. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Jana Křoustková
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Daniela Suchánková
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Anna Hošťálková
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Marcela Šafratová
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Eliška Kohelová
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Rozálie Peřinová
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Rudolf Vrabec
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Denise Francisco
- Prudêncio Lab, Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Edf. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Miguel Prudêncio
- Prudêncio Lab, Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Edf. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Lucie Cahlíková
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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10
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Altharawi A, Riadi Y, Tahir Ul Qamar M. An in silico quest for next-generation antimalarial drugs by targeting Plasmodium falciparum hexose transporter protein: a multi-pronged approach. J Biomol Struct Dyn 2023; 41:14450-14459. [PMID: 36812293 DOI: 10.1080/07391102.2023.2181635] [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: 12/19/2022] [Accepted: 02/12/2023] [Indexed: 02/24/2023]
Abstract
The emergence of artemisinin resistance by malaria parasites is a major challenge in the fight against malaria, thus posing serious threat to the public health across the world. To tackle this, antimalarial drugs with unconventional mechanisms are therefore urgently needed. It has been reported that selective starvation of Plasmodium falciparum by blocking the function of hexose transporter 1 (PfHT1) protein, the only known transporter for glucose uptake in P. falciparum, could provide an alternative approach to fight the drug resistant malaria parasites. In this study, three high affinity molecules (BBB_25784317, BBB_26580136 and BBB_26580144) that have shown the best docked conformation and least binding energy with PfHT1 were shortlisted. The docking energy of BBB_25784317, BBB_26580136 and BBB_26580144 with PfHT1 were -12.5, -12.1 and -12.0 kcal/mol, respectively. In the follow up simulation studies, the protein 3D structure maintains considerable stability in the presence of the compounds. It was also observed that the compounds produced a number of hydrophilic and hydrophobic interactions with the protein allosteric site residues. This demonstrates strong intermolecular interaction guided by close distance hydrogen bonds of compounds with Ser45, Asn48, Thr49, Asn52, Ser317, Asn318, Ile330 and Ser334. Revalidation of compounds binding affinity was conducted by more appropriate simulation based binding free energy techniques (MM-GB/PBSA and WaterSwap). Additionally, entropy assay was performed that further strengthen the predictions. In silico pharmacokinetics confirmed that the compounds would be suitable candidates for oral delivery due to their high gastrointestinal absorption and less toxic reaction. Overall, the predicted compounds are promising and could be further sought as antimalarial leads and subjected to thorough experimental investigations.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ali Altharawi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Yassine Riadi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Muhammad Tahir Ul Qamar
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
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11
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Nornidulin, A New Inhibitor of Plasmodium falciparum Malate: Quinone Oxidoreductase (PfMQO) from Indonesian Aspergillus sp. BioMCC f.T.8501. Pharmaceuticals (Basel) 2023. [DOI: 10.3390/ph16020268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
This study aimed to obtain a microbial active compound as a novel antimalarial drug from Indonesian isolates. Target-based assays were used to screen for antimalarial activity against the parasite mitochondrial, Plasmodium falciparum malate:quinone oxidoreductase (PfMQO) enzyme. In total, 1600 crude extracts, composed from 800 fungi and 800 actinomycetes extracts, were screened against PfMQO, yielding six active extracts as primary hits. After several stages of stability tests, one extract produced by Aspergillus sp. BioMCC f.T.8501 demonstrated stable PfMQO inhibitory activity. Several purification stages, including OCC, TLC, and HPLC, were performed to obtain bioactive compounds from this active extract. All purification steps were followed by an assay against PfMQO. We identified the active compound as nornidulin based on its LC-MS and UV spectrum data. Nornidulin inhibited PfMQO activity at IC50 of 51 µM and P. falciparum 3D7 proliferation in vitro at IC50 of 44.6 µM, however, it had no effect on the growth of several mammalian cells. In conclusion, we isolated nornidulin from Indonesian Aspergillus sp. BioMCC f.T.8501 as a novel inhibitor of PfMQO, which showed inhibitory activity against the proliferation of P. falciparum 3D7 in vitro.
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12
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Synthesis and antimicrobial activity evaluation of indole-azole-fluoroquinolone hybrids with highly functionalized functional groups. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2023. [DOI: 10.1007/s13738-022-02734-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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13
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Structure- and ligand-based drug design methods for the modeling of antimalarial agents: a review of updates from 2012 onwards. J Biomol Struct Dyn 2022; 40:10481-10506. [PMID: 34129805 DOI: 10.1080/07391102.2021.1932598] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Malaria still persists as one of the deadliest infectious disease having a huge morbidity and mortality affecting the higher population of the world. Structure and ligand-based drug design methods like molecular docking and MD simulations, pharmacophore modeling, QSAR and virtual screening are widely used to perceive the accordant correlation between the antimalarial activity and property of the compounds to design novel dominant and discriminant molecules. These modeling methods will speed-up antimalarial drug discovery, selection of better drug candidates for synthesis and to achieve potent and safer drugs. In this work, we have extensively reviewed the literature pertaining to the use and applications of various ligand and structure-based computational methods for the design of antimalarial agents. Different classes of molecules are discussed along with their target interactions pattern, which is responsible for antimalarial activity. Communicated by Ramaswamy H. Sarma.
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14
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Wells M, Fossépré M, Hambye S, Surin M, Blankert B. Uncovering the antimalarial potential of toad venoms through a bioassay-guided fractionation process. Int J Parasitol Drugs Drug Resist 2022; 20:97-107. [PMID: 36343571 PMCID: PMC9772263 DOI: 10.1016/j.ijpddr.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/16/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022]
Abstract
Malaria remains to date one of the most devastating parasitic diseases worldwide. The fight against this disease is rendered more difficult by the emergence and spread of drug-resistant strains. The need for new therapeutic candidates is now greater than ever. In this study, we investigated the antiplasmodial potential of toad venoms. The wide array of bioactive compounds present in Bufonidae venoms has allowed researchers to consider many potential therapeutic applications, especially for cancers and infectious diseases. We focused on small molecules, namely bufadienolides, found in the venom of Rhinella marina (L.). The developed bio-guided fractionation process includes a four solvent-system extraction followed by fractionation using flash chromatography. Sub-fractions were obtained through preparative TLC. All samples were characterized using chromatographic and spectrometric techniques and then underwent testing on in vitro Plasmodium falciparum cultures. Two strains were considered: 3D7 (chloroquine-sensitive) and W2 (chloroquine-resistant). This strategy highlighted a promising activity for one compound named resibufogenin. With IC50 values of (29 ± 8) μg/mL and (23 ± 1) μg/mL for 3D7 and W2 respectively, this makes it an interesting candidate for further investigation. A molecular modelling approach proposed a potential binding mode of resibufogenin to Plasmodium falciparum adenine-triphosphate 4 pump as antimalarial drug target.
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Affiliation(s)
- Mathilde Wells
- Laboratory of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy, Research Institute for Health Sciences and Technology, University of Mons - UMONS, Place du Parc 20, 7000, Mons, Belgium
| | - Mathieu Fossépré
- Laboratory for Chemistry of Novel Materials, Faculty of Sciences, Research Institute for Biosciences and Research Institute for Materials, University of Mons - UMONS, Place du Parc 20, 7000, Mons, Belgium
| | - Stéphanie Hambye
- Laboratory of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy, Research Institute for Health Sciences and Technology, University of Mons - UMONS, Place du Parc 20, 7000, Mons, Belgium
| | - Mathieu Surin
- Laboratory for Chemistry of Novel Materials, Faculty of Sciences, Research Institute for Biosciences and Research Institute for Materials, University of Mons - UMONS, Place du Parc 20, 7000, Mons, Belgium
| | - Bertrand Blankert
- Laboratory of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy, Research Institute for Health Sciences and Technology, University of Mons - UMONS, Place du Parc 20, 7000, Mons, Belgium.
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15
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Babai R, Izrael R, Vértessy BG. Characterization of the dynamics of Plasmodium falciparum deoxynucleotide-triphosphate pool in a stage-specific manner. Sci Rep 2022; 12:19926. [PMID: 36402851 PMCID: PMC9675800 DOI: 10.1038/s41598-022-23807-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 11/06/2022] [Indexed: 11/21/2022] Open
Abstract
Understanding and characterizing the molecular background of the maintenance of genomic integrity might be a major factor in comprehending the exceptional ability of the malaria parasite, Plasmodium falciparum to adapt at a fast pace to antimalarials. A balanced nucleotide pool is an essential factor for high-fidelity replication. The lack of detailed studies on deoxynucleotide-triphosphate (dNTP) pools in various intraerythrocytic stages of Plasmodium falciparum motivated our present study. Here, we focused on the building blocks of DNA and utilized an EvaGreen-based dNTP incorporation assay to successfully measure the temporal dynamics of dNTPs in every intraerythrocytic stage and in drug-treated trophozoites. Our findings show that the ratio of dNTPs in the ring-stage parasites significantly differs from the more mature trophozoite and schizont stages. We were also able to detect dGTP levels that have never been shown before and found it to be the least abundant dNTP in all stages. Treatment with WR99210, a TS-DHFR inhibitor drug, affected not only dTTP, but also dGTP levels, despite its presumed selective action on pyrimidine biosynthesis. Results from our studies might assist in a better understanding of genome integrity mechanisms and may potentially lead to novel drug related aspects involving purine and pyrimidine metabolic targets.
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Affiliation(s)
- Réka Babai
- grid.425578.90000 0004 0512 3755Malaria Research Laboratory, Institute of Enzymology, Research Centre for Natural Sciences, Budapest, 1117 Hungary ,grid.6759.d0000 0001 2180 0451George A. Olah Doctoral School of Chemistry and Chemical Technology, BME Budapest University of Technology and Economics, Budapest, 1111 Hungary ,grid.6759.d0000 0001 2180 0451Department of Applied Biotechnology and Food Sciences, BME Budapest University of Technology and Economics, Budapest, 1111 Hungary
| | - Richard Izrael
- grid.425578.90000 0004 0512 3755Malaria Research Laboratory, Institute of Enzymology, Research Centre for Natural Sciences, Budapest, 1117 Hungary ,grid.9008.10000 0001 1016 9625Doctoral School of Multidisciplinary Medical Sciences, University of Szeged, Szeged, 6720 Hungary
| | - Beáta G. Vértessy
- grid.425578.90000 0004 0512 3755Malaria Research Laboratory, Institute of Enzymology, Research Centre for Natural Sciences, Budapest, 1117 Hungary ,grid.6759.d0000 0001 2180 0451Department of Applied Biotechnology and Food Sciences, BME Budapest University of Technology and Economics, Budapest, 1111 Hungary
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16
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Bassanini I, Parapini S, Basilico N, Taramelli D, Romeo S. From DC18 to MR07: A Metabolically Stable 4,4'-Oxybisbenzoyl Amide as a Low-Nanomolar Growth Inhibitor of P. falciparum. ChemMedChem 2022; 17:e202200355. [PMID: 36089546 PMCID: PMC9827966 DOI: 10.1002/cmdc.202200355] [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: 07/01/2022] [Revised: 09/02/2022] [Indexed: 01/12/2023]
Abstract
To improve the metabolic stability of a 4,4'-oxybisbenzoyl-based novel and potent (nanomolar-range IC50 ) antiplasmodial agent previously described by us, in silico-guided structure-activity relationship (SAR) campaigns have been conducted to substitute its peptide decorations with more metabolically stable residues. The effects of the various structural modifications were then correlated with the antiplasmodial activity in vitro in phenotypic assays. Among the several derivatives synthetized and compared with the 3D-pharmacophoric map of the original lead, a novel compound, characterized by a western tert-butyl glycine residue and an eastern 1S,2S-aminoacyclohexanol, showed low-nanomolar-range antiplasmodial activity, no signs of cross-resistance and, most importantly, 47-fold improved Phase I metabolic stability when incubated with human liver microsomes. These results highlight the efficacy of in silico-guided SAR campaigns which will allow us to further optimize the structure of the new lead aiming at testing its efficacy in vivo using different routes of administration.
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Affiliation(s)
- Ivan Bassanini
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”Consiglio Nazionale delle RicercheVia Mario Bianco 920131MilanoItaly,Centro Interuniversitario di Ricerca sulla Malaria-Italian Malaria NetworkVia Festa del Perdono 720122MilanoItaly
| | - Silvia Parapini
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoVia Pascal 3620133MilanoItaly,Centro Interuniversitario di Ricerca sulla Malaria-Italian Malaria NetworkVia Festa del Perdono 720122MilanoItaly
| | - Nicoletta Basilico
- Dipartimento di Scienze Biomediche, Chirurgiche e OdontoiatricheUniversità degli Studi di MilanoVia Pascal 3620133MilanoItaly,Centro Interuniversitario di Ricerca sulla Malaria-Italian Malaria NetworkVia Festa del Perdono 720122MilanoItaly
| | - Donatella Taramelli
- Dipartimento di Scienze Farmacologiche e BiomolecolariUniversità degli Studi di MilanoVia Pascal 3620133MilanoItaly,Centro Interuniversitario di Ricerca sulla Malaria-Italian Malaria NetworkVia Festa del Perdono 720122MilanoItaly
| | - Sergio Romeo
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi di MilanoVia Mangiagalli 2520133MilanoItaly,Centro Interuniversitario di Ricerca sulla Malaria-Italian Malaria NetworkVia Festa del Perdono 720122MilanoItaly
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17
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Panecka-Hofman J, Poehner I, Wade R. Anti-trypanosomatid structure-based drug design - lessons learned from targeting the folate pathway. Expert Opin Drug Discov 2022; 17:1029-1045. [PMID: 36073204 DOI: 10.1080/17460441.2022.2113776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Trypanosomatidic parasitic infections of humans and animals caused by Trypanosoma brucei, Trypanosoma cruzi, and Leishmania species pose a significant health and economic burden in developing countries. There are few effective and accessible treatments for these diseases, and the existing therapies suffer from problems such as parasite resistance and side effects. Structure-based drug design (SBDD) is one of the strategies that has been applied to discover new compounds targeting trypanosomatid-borne diseases. AREAS COVERED We review the current literature (mostly over the last 5 years, searched in PubMed database on Nov 11th 2021) on the application of structure-based drug design approaches to identify new anti-trypanosomatidic compounds that interfere with a validated target biochemical pathway, the trypanosomatid folate pathway. EXPERT OPINION The application of structure-based drug design approaches to perturb the trypanosomatid folate pathway has successfully provided many new inhibitors with good selectivity profiles, most of which are natural products or their derivatives or have scaffolds of known drugs. However, the inhibitory effect against the target protein(s) often does not translate to anti-parasitic activity. Further progress is hampered by our incomplete understanding of parasite biology and biochemistry, which is necessary to complement SBDD in a multiparameter optimization approach to discovering selective anti-parasitic drugs.
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Affiliation(s)
- Joanna Panecka-Hofman
- Division of Biophysics, Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5a, 02-097 Warsaw, Poland
| | - Ina Poehner
- School of Pharmacy, University of Eastern Finland, Kuopio, Yliopistonranta 1C, PO Box 1627, FI-70211 Kuopio, Finland
| | - Rebecca Wade
- Center for Molecular Biology (ZMBH), Heidelberg University, Im Neuenheimer Feld 282, Heidelberg 69120, Germany.,Heidelberg Institute for Theoretical Studies (HITS), Schloß-Wolfsbrunnenweg 35, Heidelberg 69118, Germany.,DKFZ-ZMBH Alliance and Interdisciplinary Center for Scientific Computing (IWR), Heidelberg University, Im Neuenheimer Feld 205, Heidelberg 69120, Germany
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18
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Singh P, Sharma C, Sharma B, Mishra A, Agarwal D, Kannan D, Held J, Singh S, Awasthi SK. N-sulfonylpiperidinedispiro-1,2,4,5-tetraoxanes exhibit potent in vitro antiplasmodial activity and in vivo efficacy in mice infected with P. berghei ANKA. Eur J Med Chem 2022; 244:114774. [DOI: 10.1016/j.ejmech.2022.114774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 09/03/2022] [Accepted: 09/10/2022] [Indexed: 11/04/2022]
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19
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Elattar KM, El-Khateeb AY, Hamed SE. Insights into the recent progress in the medicinal chemistry of pyranopyrimidine analogs. RSC Med Chem 2022; 13:522-567. [PMID: 35694689 PMCID: PMC9133730 DOI: 10.1039/d2md00076h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 04/21/2022] [Indexed: 12/13/2022] Open
Abstract
Heterocycles containing the pyranopyrimidine motif have attracted the interest of researchers in recent decades due to their ability to synthesize and explore at a large scale to explore the biological diversity. Therefore, this review highlights the biological characteristics and synthetic approaches adopted to prepare pyranopyrimidine analogs in the last five years. Several novel preparation procedures have been summarized to synthesize these compounds using ionic, basic, or nanocatalysts or catalyst-free conditions to obtain these compounds in good yields. Pyranopyrimidines could also be used as ligands in the preparation of metal complexes with increased biological potency. The different sections include the antimicrobial, antitubercular, antimalarial, antiviral "SARS-CoV-2 inhibitors", antidiabetic, antitumor, cytotoxic, antiinflammatory, antioxidant, anticoagulant, urease inhibitory activities, and tyrosine inhibitors. The results are discussed based on the structure-activity relationships (SARs) and the mechanism of action.
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Affiliation(s)
- Khaled M Elattar
- Chemistry Department, Faculty of Science, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt +201010655354
| | - Ayman Y El-Khateeb
- Agricultural Chemistry Department, Faculty of Agriculture, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt
| | - Sahar E Hamed
- Chemistry Department, Faculty of Agriculture, Damietta University Damietta 22052 Egypt
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20
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Enninful KS, Kwofie SK, Tetteh-Tsifoanya M, Lamptey ANL, Djameh G, Nyarko S, Ghansah A, Wilson MD. Targeting the Plasmodium falciparum’s Thymidylate Monophosphate Kinase for the Identification of Novel Antimalarial Natural Compounds. Front Cell Infect Microbiol 2022; 12:868529. [PMID: 35694550 PMCID: PMC9174469 DOI: 10.3389/fcimb.2022.868529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
Recent reports of resistance to artemisinin-based combination drugs necessitate the need to discover novel antimalarial compounds. The present study was aimed at identifying novel antimalarial compounds from natural product libraries using computational methods. Plasmodium falciparum is highly dependent on the pyrimidine biosynthetic pathway, a de novo pathway responsible for the production of pyrimidines, and the parasite lacks the pyrimidine salvage enzymes. The P. falciparum thymidylate monophosphate kinase (PfTMPK) is an important protein necessary for rapid DNA replication; however, due to its broad substrate specificity, the protein is distinguished from its homologs, making it a suitable drug target. Compounds from AfroDB, a database of natural products originating from Africa, were screened virtually against PfTMPK after filtering the compounds for absorption, distribution, metabolism, excretion, and toxicity (ADMET)-acceptable compounds with FAF-Drugs4. Thirteen hits with lower binding energies than thymidine monophosphate were selected after docking. Among the thirteen compounds, ZINC13374323 and ZINC13365918 with binding energies of −9.4 and −8.9 kcal/mol, respectively, were selected as plausible lead compounds because they exhibited structural properties that ensure proper binding at the active site and inhibitory effect against PfTMPK. ZINC13374323 (also called aurantiamide acetate) is known to exhibit anti-inflammatory and antiviral activities, and ZINC13365918 exhibits antileishmanial activity. Furthermore, aurantiamide acetate, which is commercially available, is a constituent of Artemisia annua, the herb from which artemisinin was derived. The compound also shares interactions with several residues with a potent thymidine analog inhibitor of PfTMPK. The anti-plasmodial activity of aurantiamide acetate was evaluated in vitro, and the mean half-maximal inhibitory concentration (IC50) was 69.33 μM when synchronized P. falciparum 3D7 culture was used as compared to IC50 > 100 μM with asynchronized culture. The significance of our findings within the context of malaria treatment strategies and challenges is discussed.
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Affiliation(s)
- Kweku S. Enninful
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Samuel K. Kwofie
- Department of Biomedical Engineering, School of Engineering Sciences, University of Ghana, Accra, Ghana
- West African Centre for Cell Biology of Infectious Pathogens, College of Basic and Applied Sciences, University of Ghana, Accra, Ghana
| | - Mark Tetteh-Tsifoanya
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Amanda N. L. Lamptey
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Georgina Djameh
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Samuel Nyarko
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Anita Ghansah
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Michael D. Wilson
- Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
- Stritch School of Medicine, Loyola University of Chicago, Maywood, IL, United States
- *Correspondence: Michael D. Wilson,
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21
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Kaur S, Nieto NS, McDonald P, Beck JR, Honzatko RB, Roy A, Nelson SW. Discovery of small molecule inhibitors of Plasmodium falciparum apicoplast DNA polymerase. J Enzyme Inhib Med Chem 2022; 37:1320-1326. [PMID: 35514163 PMCID: PMC9090415 DOI: 10.1080/14756366.2022.2070909] [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] [Indexed: 11/01/2022] Open
Abstract
Malaria is caused by infection with protozoan parasites of the Plasmodium genus, which is part of the phylum Apicomplexa. Most organisms in this phylum contain a relic plastid called the apicoplast. The apicoplast genome is replicated by a single DNA polymerase (apPOL), which is an attractive target for anti-malarial drugs. We screened small-molecule libraries (206,504 compounds) using a fluorescence-based high-throughput DNA polymerase assay. Dose/response analysis and counter-screening identified 186 specific apPOL inhibitors. Toxicity screening against human HepaRG human cells removed 84 compounds and the remaining were subjected to parasite killing assays using chloroquine resistant P. falciparum parasites. Nine compounds were potent inhibitors of parasite growth and may serve as lead compounds in efforts to discover novel malaria drugs.
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Affiliation(s)
- Supreet Kaur
- Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Nicholas S Nieto
- Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Peter McDonald
- High Throughput Screening Laboratory, University of Kansas, Lawrence, KS, USA
| | - Josh R Beck
- Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Richard B Honzatko
- Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Anuradha Roy
- High Throughput Screening Laboratory, University of Kansas, Lawrence, KS, USA
| | - Scott W Nelson
- Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA, USA
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22
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In search of suitable protein targets for anti-malarial and anti-dengue drug discovery. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Adebayo J, Ceravolo I, Gyebi G, Olorundare E, Babatunde A, Penna-Coutinho J, Koketsu M, Krettli A. Iloneoside, an antimalarial pregnane glycoside isolated from Gongronema latifolium leaf, potentiates the activity of chloroquine against multidrug resistant Plasmodium falciparum. Mol Biochem Parasitol 2022; 249:111474. [DOI: 10.1016/j.molbiopara.2022.111474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 03/09/2022] [Accepted: 03/13/2022] [Indexed: 10/18/2022]
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24
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Oguike OE, Ugwuishiwu CH, Asogwa CN, Nnadi CO, Obonga WO, Attama AA. Systematic review on the application of machine learning to quantitative structure-activity relationship modeling against Plasmodium falciparum. Mol Divers 2022; 26:3447-3462. [PMID: 35064444 PMCID: PMC8782692 DOI: 10.1007/s11030-022-10380-1] [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: 10/05/2021] [Accepted: 01/07/2022] [Indexed: 11/29/2022]
Abstract
Malaria accounts for over two million deaths globally. To flatten this curve, there is a need to develop new and high potent drugs against Plasmodium falciparum. Some major challenges include the dearth of suitable animal models for anti-P. falciparum assays, resistance to first-line drugs, lack of vaccines and the complex life cycle of Plasmodium. Gladly, newer approaches to antimalarial drug discovery have emerged due to the release of large datasets by pharmaceutical companies. This review provides insights into these new approaches to drug discovery covering different machine learning tools, which enhance the development of new compounds. It provides a systematic review on the use and prospects of machine learning in predicting, classifying and clustering IC50 values of bioactive compounds against P. falciparum. The authors identified many machine learning tools yet to be applied for this purpose. However, Random Forest and Support Vector Machines have been extensively applied though on a limited dataset of compounds.
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Affiliation(s)
- Osondu Everestus Oguike
- Machine Learning Research Group, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria.,Department of Computer Science, Faculty of Physical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Chikodili Helen Ugwuishiwu
- Machine Learning Research Group, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria.,Department of Computer Science, Faculty of Physical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Caroline Ngozi Asogwa
- Machine Learning Research Group, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria.,Department of Computer Science, Faculty of Physical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Charles Okeke Nnadi
- Machine Learning Research Group, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria. .,Deprtment of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria.
| | - Wilfred Ofem Obonga
- Machine Learning Research Group, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria.,Deprtment of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Anthony Amaechi Attama
- Machine Learning Research Group, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria.,Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
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25
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Oluyemi WM, Samuel BB, Adewumi AT, Adekunle YA, Soliman MES, Krenn L. An Allosteric Inhibitory Potential of Triterpenes from Combretum racemosum on the Structural and Functional Dynamics of Plasmodium falciparum Lactate Dehydrogenase Binding Landscape. Chem Biodivers 2022; 19:e202100646. [PMID: 34982514 DOI: 10.1002/cbdv.202100646] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 11/29/2021] [Indexed: 12/28/2022]
Abstract
Multidrug resistance is a significant drawback in malaria treatment, and mutations in the active sites of the many critical antimalarial drug targets have remained challenging. Therefore, this has necessitated the global search for new drugs with new mechanisms of action. Plasmodium falciparum lactate dehydrogenase (pfLHD), a glycolytic enzyme, has emerged as a potential target for developing new drugs due to the parasite reliance on glycolysis for energy. Strong substrate-binding is required in pfLDH enzymatic catalysis; however, there is a lack of information on small molecules' inhibitory mechanism bound to the substrate-binding pocket. Therefore, this study investigated a potential allosteric inhibition of pfLDH by targeting the substrate-binding site. The structural and functional behaviour of madecassic acid (MA), the most promising among the six triterpenes bound to pfLDH, were unravelled using molecular dynamic simulations at 300 ns to gain insights into its mechanism of binding and inhibition and chloroquine as a standard drug. The docking studies identified that the substrate site has the preferred position for the compounds even in the absence of a co-factor. The bound ligands showed comparably higher binding affinity at the substrate site than at the co-factor site. Mechanistically, a characteristic loop implicated in the enzyme catalytic activity was identified at the substrate site. This loop accommodates key interacting residues (LYS174, MET175, LEU177 and LYS179) pivotal in the MA binding and inhibitory action. The MA-bound pfLHD average RMSD (1.60 Å) relative to chloroquine-bound pfLHD RMSD (2.00 Å) showed higher stability for the substrate pocket, explaining the higher binding affinity (-33.40 kcal/mol) observed in the energy calculations, indicating that MA exhibited profound inhibitory activity. The significant pfLDH loop conformational changes and the allostery substrate-binding landscape suggested inhibiting the enzyme function, which provides an avenue for designing antimalarial compounds in the future studies of pfLDH protein as a target.
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Affiliation(s)
- Wande M Oluyemi
- Laboratory for Natural Products and Biodiscovery Research, Pharmaceutical Chemistry Department, Faculty of Pharmacy, University of Ibadan, Nigeria
| | - Babatunde B Samuel
- Laboratory for Natural Products and Biodiscovery Research, Pharmaceutical Chemistry Department, Faculty of Pharmacy, University of Ibadan, Nigeria
| | - Adeniyi T Adewumi
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4001, South Africa
| | - Yemi A Adekunle
- Laboratory for Natural Products and Biodiscovery Research, Pharmaceutical Chemistry Department, Faculty of Pharmacy, University of Ibadan, Nigeria.,Department of Pharmaceutical Chemistry, Dora Akunyili College of Pharmacy, Igbinedion University, Okada, Benin City, Nigeria
| | - Mahmoud E S Soliman
- Molecular Bio-computation and Drug Design Laboratory, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4001, South Africa
| | - Liselotte Krenn
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria
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26
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Sacomboio ENM, S Sebastião C, Antonio JLF, Vezo ÁK, Bapolo DVS, Morais J. Factors Associated With Resistance to In-Hospital Treatment of Malaria in Angolan Patients. INFECTIOUS DISEASES: RESEARCH AND TREATMENT 2022; 15:11786337221076836. [PMID: 35281668 PMCID: PMC8905199 DOI: 10.1177/11786337221076836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/11/2022] [Indexed: 11/15/2022]
Abstract
Background: Malaria is a public health problem, particularly in low- and middle-income countries. In Angola, it is the leading cause of death, morbidity, and absenteeism from work and school. Objective: To evaluate the social and clinical factors associated with resistance to in-hospital treatment. Methodology: A prospective analytical cross-sectional study with a quantitative approach was conducted including 220 patients with malaria. Results: Of the 220 patients enrolled, the majority were between 21 and 40 years old (72.7%), male (53.6%), of peri-urban areas (47.7%), employees (46.4%), and with high parasitemia levels (57.7%). Of the remaining hospitalized patients (61.4%), 20.9% were resistant to treatment. The resistance risk was higher in patients over 40 years [OR: 5.91 (95% CI: 0.76-45.7), P = .088], from rural regions [OR: 2.48 (95% CI: 0.95-6.48), P = .064], that were unemployed [OR: 1.06 (95% CI: 0.52-2.15), P = .859], presenting high parasitemia [OR: 1.95 (95% CI: 1.02-3.75), P = .043] and who remained hospitalized [OR: 5.28 (95% CI: 0.63-43.1), P = .121]. The risk to develop resistance was lower in patients that were students [OR: 0.04 (95% CI: 0.01-0.37), P = .004], patients who were treated with dipyrone [OR: 0.06 (95% CI: 0.01-0.24), P < .001], metoclopramide [OR: 0.25 (95% CI: 0.09-0.67), P = .006] and ciprofloxacin [OR: 0.22 (95% CI: 0.11-0.44), P < .001]. Conclusion: Treatment with antimalarial drugs as well as the use of adjuvants such as dipyrone, metoclopramide, ciprofloxacin, and diazepam can reduce the chances of developing resistance to malaria treatment, however, it is necessary to carry out further in-depth studies.
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Affiliation(s)
- Euclides Nenga Manuel Sacomboio
- Instituto Nacional de Investigação em Saúde, Luanda, Angola
- Instituto Superior de Ciências de Saúde, Universidade Agostinho Neto, Luanda, Angola
- Centro de Formação em Saúde/Clínica Multiperfil, Luanda, Angola
- Euclides Nenga Manuel Sacomboio, Instituto Superior de Ciências de Saúde da Universidade Agostinho Neto, Luanda-Angola, 21 de Janeiro Street, Morro Bento, Luanda, Angola.
| | - Cruz S Sebastião
- Instituto Nacional de Investigação em Saúde, Luanda, Angola
- Instituto Superior de Ciências de Saúde, Universidade Agostinho Neto, Luanda, Angola
- Centro de Investigação em Saúde de Angola, Caxito, Angola
| | | | - Álvaro Kuanzambi Vezo
- Instituto Superior de Ciências de Saúde, Universidade Agostinho Neto, Luanda, Angola
| | | | - Joana Morais
- Instituto Nacional de Investigação em Saúde, Luanda, Angola
- Faculdade de Medicina, Universidade Agostinho Neto, Luanda, Angola
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27
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Zhou H, Rui Z, Yang Y, Xu S, Shao Y, Liu L. First total synthesis of hoshinoamide A. Beilstein J Org Chem 2021; 17:2924-2931. [PMID: 34956412 PMCID: PMC8685559 DOI: 10.3762/bjoc.17.201] [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: 09/14/2021] [Accepted: 11/26/2021] [Indexed: 11/23/2022] Open
Abstract
Hoshinoamides A, B and C, linear lipopeptides, were isolated from the marine cyanobacterium Caldora penicillata, with potent antiplasmodial activity against chloroquine-sensitive Plasmodium falciparum. Herein, we describe the first total synthesis of hoshinoamide A by the combination of liquid-phase and solid-phase peptide synthesis. Liquid-phase synthesis is to improve the coupling yield of ʟ-Val3 and N-Me-ᴅ-Phe2. Connecting other amino acids efficiency and convergence is achieved by solid-state synthesis. Our synthetic strategy could synthesize the target peptide in high yield with good purity.
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Affiliation(s)
- Haipin Zhou
- College of Materials & Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Zihan Rui
- College of Materials & Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Yiming Yang
- College of Materials & Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Shengtao Xu
- College of Materials & Chemical Engineering, Chuzhou University, Chuzhou 239000, China.,State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University,24 Tong Jia Xiang, Nanjing 210009, China
| | - Yutian Shao
- College of Materials & Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Long Liu
- Taizhou Medical Hi-Tech Development Public Services Platform, Taizhou 225300, China
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28
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Asare KK, Africa J, Mbata J, Opoku YK. The emergence of chloroquine-sensitive Plasmodium falciparum is influenced by selected communities in some parts of the Central Region of Ghana. Malar J 2021; 20:447. [PMID: 34823528 PMCID: PMC8620919 DOI: 10.1186/s12936-021-03985-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
Background The return of chloroquine-sensitive Plasmodium falciparum in sub-Saharan Africa countries offers the opportunity for the reintroduction of chloroquine (CQ) either in combination with other drugs or as a single therapy for the management of malaria. This study assesses the influence of individual study sites on the selection of CQ sensitive P. falciparum markers in the Central region of Ghana. Methods Genomic DNA was extracted from an archived filter paper blood blot from Cape Coast, Elmina, Assin Fosu, and Twifo Praso using the Chelex DNA extraction method. The age metadata of the patients from whom the blood spots were taken was collected. The prevalence of CQ-sensitive markers of pfcrt K76 and pfmdr1 N86 was performed using nested PCR and RFLP. The data were analysed using Chi-square and Odd ratio. Results The overall prevalence of CQ-sensitive P. falciparum markers, pfcrt K76 and pfmdr1 N86 in the Central Region of Ghana were 142 out of 184 (77.17%) and 180 out of 184 (97.83%), respectively. The distribution of pfcrt K76 was assessed among the age groups per the individual study sites. 12 out of 33 (36.36%), 8 out of 33 (24.24%) and 6 out of 33 (18.18%) of pfcrt K76 CQ-sensitive marker were isolated from age 0 to 5 years, 16 to 30 years and 31 to 45 years old respectively at Cape Coast. Assin Fosu and Twifo Praso had the highest pfcrt K76 prevalence in 0–5 years, followed by 16–30 years and 6–15 years of age. The results showed that there was a significant prevalence of pfcrt K76 in all study sites; Cape Coast (χ2 = 26.48, p < 0.0001), Assin Fosu (χ2 = 37.67, p < 0.0001), Twifo Praso (χ2 = 32.25, p < 0.0001) and Elmina (χ2 = 17.88, p < 0.0001). Again, the likelihood to detect pfcrt K76 (OR (95% CI) was 7.105 (3.118–17.14), p < 0.0001 and pfmdr1 (2.028 (1.065–3.790), p < 0.001) among P. falciparum isolates from Cape Coast to be seven times and two times, respectively. Conclusion The study showed a significant selection and expansion of chloroquine-sensitive P. falciparum markers in all the selected study areas in the Central region. This finding has a significant implication for the future treatment, management, and control of P. falciparum malaria. Supplementary Information The online version contains supplementary material available at 10.1186/s12936-021-03985-8.
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Affiliation(s)
- Kwame Kumi Asare
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana.
| | - Justice Africa
- Department of Medical Laboratory Science, University of Cape Coast, Cape Coast, Ghana
| | - Jennifer Mbata
- Department of Biology Education, Faculty of Science Education, University of Education, Winneba, Ghana
| | - Yeboah Kwaku Opoku
- Department of Biology Education, Faculty of Science Education, University of Education, Winneba, Ghana
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29
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Galindo-González L, Hwang SF, Strelkov SE. Candidate Effectors of Plasmodiophora brassicae Pathotype 5X During Infection of Two Brassica napus Genotypes. Front Microbiol 2021; 12:742268. [PMID: 34803960 PMCID: PMC8595600 DOI: 10.3389/fmicb.2021.742268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/11/2021] [Indexed: 01/28/2023] Open
Abstract
Clubroot, caused by Plasmodiophora brassicae, is one of the most important diseases of canola (Brassica napus) in Canada. Disease management relies heavily on planting clubroot resistant (CR) cultivars, but in recent years, new resistance-breaking pathotypes of P. brassicae have emerged. Current efforts against the disease are concentrated in developing host resistance using traditional genetic breeding, omics and molecular biology. However, because of its obligate biotrophic nature, limited resources have been dedicated to investigating molecular mechanisms of pathogenic infection. We previously performed a transcriptomic study with the cultivar resistance-breaking pathotype 5X on two B. napus hosts presenting contrasting resistance/susceptibility, where we evaluated the mechanisms of host response. Since cultivar-pathotype interactions are very specific, and pathotype 5X is one of the most relevant resistance-breaking pathotypes in Canada, in this study, we analyze the expression of genes encoding putative secreted proteins from this pathotype, predicted using a bioinformatics pipeline, protein modeling and orthologous comparisons with effectors from other pathosystems. While host responses were found to differ markedly in our previous study, many common effectors are found in the pathogen while infecting both hosts, and the gene response among biological pathogen replicates seems more consistent in the effectors associated with the susceptible interaction, especially at 21 days after inoculation. The predicted effectors indicate the predominance of proteins with interacting domains (e.g., ankyrin), and genes bearing kinase and NUDIX domains, but also proteins with protective action against reactive oxygen species from the host. Many of these genes confirm previous predictions from other clubroot studies. A benzoic acid/SA methyltransferase (BSMT), which methylates SA to render it inactive, showed high levels of expression in the interactions with both hosts. Interestingly, our data indicate that E3 ubiquitin proteasome elements are also potentially involved in pathogenesis. Finally, a gene with similarity to indole-3-acetaldehyde dehydrogenase is a promising candidate effector because of its involvement in indole acetic acid synthesis, since auxin is one of the major players in clubroot development.
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Affiliation(s)
| | | | - Stephen E. Strelkov
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB, Canada
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30
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Erhunse N, Sahal D. Protecting future antimalarials from the trap of resistance: Lessons from artemisinin-based combination therapy (ACT) failures. J Pharm Anal 2021; 11:541-554. [PMID: 34765267 PMCID: PMC8572664 DOI: 10.1016/j.jpha.2020.07.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 07/19/2020] [Accepted: 07/19/2020] [Indexed: 11/01/2022] Open
Abstract
Having faced increased clinical treatment failures with dihydroartemisinin-piperaquine (DHA-PPQ), Cambodia swapped the first line artemisinin-based combination therapy (ACT) from DHA-PPQ to artesunate-mefloquine given that parasites resistant to piperaquine are susceptible to mefloquine. However, triple mutants have now emerged, suggesting that drug rotations may not be adequate to keep resistance at bay. There is, therefore, an urgent need for alternative treatment strategies to tackle resistance and prevent its spread. A proper understanding of all contributors to artemisinin resistance may help us identify novel strategies to keep artemisinins effective until new drugs become available for their replacement. This review highlights the role of the key players in artemisinin resistance, the current strategies to deal with it and suggests ways of protecting future antimalarial drugs from bowing to resistance as their predecessors did.
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Affiliation(s)
- Nekpen Erhunse
- Malaria Drug Discovery Research Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
- Department of Biochemistry, Faculty of Life Sciences, University of Benin, Benin City, Edo-State, Nigeria
| | - Dinkar Sahal
- Malaria Drug Discovery Research Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
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31
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Sakpal S, Bastikar A, Kothari SL, Bastikar V. In silico analysis of the pyretic effect of drugs on antimalarial receptors. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Viswanath VK, Gore ST, Valiyaparambil A, Mukherjee S, Lakshminarasimhan A. Plasmodium chitinases: revisiting a target of transmission-blockade against malaria. Protein Sci 2021; 30:1493-1501. [PMID: 33934433 DOI: 10.1002/pro.4095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 01/21/2023]
Abstract
Malaria is a life-threatening disease caused by one of the five species of Plasmodium, among which Plasmodium falciparum cause the deadliest form of the disease. Plasmodium species are dependent on a vertebrate host and a blood-sucking insect vector to complete their life cycle. Plasmodium chitinases belonging to the GH18 family are secreted inside the mosquito midgut, during the ookinete stage of the parasite. Chitinases mediate the penetration of parasite through the peritrophic membrane, facilitating access to the gut epithelial layer. In this review, we describe Plasmodium chitinases with special emphasis on chitinases from P. falciparum and P. vivax, the representative examples of the short and long forms of this protein. In addition to the chitinase domain, chitinases belonging to the long form contain a pro-domain and chitin-binding domain. Amino acid sequence alignment of long and short form chitinase domains reveals multiple positions containing variant residues. A subset of these positions was found to be conserved or invariant within long or short forms, indicating the role of these positions in attributing form-specific activity. The reported differences in affinities to allosamidin for P. vivax and P. falciparum were predicted to be due to different residues at two amino acid positions, resulting in altered interactions with the inhibitor. Understanding the role of these amino acids in Plasmodium chitinases will help us elucidate the mechanism of catalysis and the mode of inhibition, which will be the key for identification of potent inhibitors or antibodies demonstrating transmission-blocking activity.
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Affiliation(s)
- Vysakh K Viswanath
- Tata Institute for Genetics and Society, Center at inStem, Bengaluru, India
| | - Suraj T Gore
- Aurigene Discovery Technologies Ltd, Bengaluru, India
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33
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Zhou M, Varol A, Efferth T. Multi-omics approaches to improve malaria therapy. Pharmacol Res 2021; 167:105570. [PMID: 33766628 DOI: 10.1016/j.phrs.2021.105570] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/02/2021] [Accepted: 03/16/2021] [Indexed: 01/07/2023]
Abstract
Malaria contributes to the most widespread infectious diseases worldwide. Even though current drugs are commercially available, the ever-increasing drug resistance problem by malaria parasites poses new challenges in malaria therapy. Hence, searching for efficient therapeutic strategies is of high priority in malaria control. In recent years, multi-omics technologies have been extensively applied to provide a more holistic view of functional principles and dynamics of biological mechanisms. We briefly review multi-omics technologies and focus on recent malaria progress conducted with the help of various omics methods. Then, we present up-to-date advances for multi-omics approaches in malaria. Next, we describe resistance phenomena to established antimalarial drugs and underlying mechanisms. Finally, we provide insight into novel multi-omics approaches, new drugs and vaccine developments and analyze current gaps in multi-omics research. Although multi-omics approaches have been successfully used in malaria studies, they are still limited. Many gaps need to be filled to bridge the gap between basic research and treatment of malaria patients. Multi-omics approaches will foster a better understanding of the molecular mechanisms of Plasmodium that are essential for the development of novel drugs and vaccines to fight this disastrous disease.
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Affiliation(s)
- Min Zhou
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany
| | - Ayşegül Varol
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany.
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34
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Nqoro X, Jama S, Morifi E, Aderibigbe BA. 4-Aminosalicylic Acid-based Hybrid Compounds: Synthesis and In vitro Antiplasmodial Evaluation. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999200802031547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Background:
Malaria is a deadly and infectious disease responsible for millions of death
worldwide, mostly in the African region. The malaria parasite has developed resistance to the currently
used antimalarial drugs, and it has urged researchers to develop new strategies to overcome
this challenge by designing different classes of antimalarials.
Objectives:
A class of hybrid compounds containing 4-aminosalicylic acid moiety was prepared via
esterification and amidation reactions and characterized using FTIR, NMR and LC-MS. In vitro antiplasmodial
evaluation was performed against the asexual NF54 strain of P. falciparum parasites.
Methods:
In this research, known 4-aminoquinoline derivatives were hybridized with 4-
aminosalicylic acid to afford hybrid compounds via esterification and amidation reactions. 4-
aminosalicylic acid, a dihydrofolate compound inhibits DNA synthesis in the folate pathway and is
a potential pharmacophore for the development of antimalarials.
Results:
The LC-MS, FTIR, and NMR analysis confirmed the successful synthesis of the compounds.
The compounds were obtained in yields in the range of 63-80%. The hybrid compounds
displayed significant antimalarial activity when compared to 4-aminosalicylic acid, which exhibited
poor antimalarial activity. The IC50 value of the most potent hybrid compound, 9 was 9.54±0.57 nm.
Conclusion:
4-aminosalicylic has different functionalities, which can be used for hybridization with
a wide range of compounds. It is a potential pharmacophore that can be utilized for the design of
potent antimalarial drugs. It was found to be a good potentiating agent when hybridized with 4-
aminoquinoline derivatives suggesting that they can be utilized for the synthesis of a new class of
antimalarials.
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Affiliation(s)
- Xhamla Nqoro
- Department of Chemistry, University of Fort Hare, Alice Campus,South Africa
| | - Siphesihle Jama
- Department of Chemistry, University of Fort Hare, Alice Campus,South Africa
| | - Eric Morifi
- School of Chemistry, Mass Spectrometry Division, University of the Witwatersrand, Johannesburg Private Bag X3, WITS, 2050,South Africa
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35
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Mills B, Isaac RE, Foster R. Metalloaminopeptidases of the Protozoan Parasite Plasmodium falciparum as Targets for the Discovery of Novel Antimalarial Drugs. J Med Chem 2021; 64:1763-1785. [PMID: 33534577 DOI: 10.1021/acs.jmedchem.0c01721] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Malaria poses a significant threat to approximately half of the world's population with an annual death toll close to half a million. The emergence of resistance to front-line antimalarials in the most lethal human parasite species, Plasmodium falciparum (Pf), threatens progress made in malaria control. The prospect of losing the efficacy of antimalarial drugs is driving the search for small molecules with new modes of action. Asexual reproduction of the parasite is critically dependent on the recycling of amino acids through catabolism of hemoglobin (Hb), which makes metalloaminopeptidases (MAPs) attractive targets for the development of new drugs. The Pf genome encodes eight MAPs, some of which have been found to be essential for parasite survival. In this article, we discuss the biological structure and function of each MAP within the Pf genome, along with the drug discovery efforts that have been undertaken to identify novel antimalarial candidates of therapeutic value.
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Affiliation(s)
- Belinda Mills
- School of Chemistry, University of Leeds, Leeds, U.K., LS2 9JT
| | - R Elwyn Isaac
- School of Biology, University of Leeds, Leeds, U.K., LS2 9JT
| | - Richard Foster
- School of Chemistry, University of Leeds, Leeds, U.K., LS2 9JT
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36
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Patel OPS, Beteck RM, Legoabe LJ. Exploration of artemisinin derivatives and synthetic peroxides in antimalarial drug discovery research. Eur J Med Chem 2021; 213:113193. [PMID: 33508479 DOI: 10.1016/j.ejmech.2021.113193] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/04/2020] [Accepted: 01/11/2021] [Indexed: 12/22/2022]
Abstract
Malaria is a life-threatening infectious disease caused by protozoal parasites belonging to the genus Plasmodium. It caused an estimated 405,000 deaths and 228 million malaria cases globally in 2018 as per the World Malaria Report released by World Health Organization (WHO) in 2019. Artemisinin (ART), a "Nobel medicine" and its derivatives have proven potential application in antimalarial drug discovery programs. In this review, antimalarial activity of the most active artemisinin derivatives modified at C-10/C-11/C-16/C-6 positions and synthetic peroxides (endoperoxides, 1,2,4-trioxolanes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes) are systematically summarized. The developmental trend of ART derivatives, and cyclic peroxides along with their antimalarial activity and how the activity is affected by structural variations on different sites of the compounds are discussed. This compilation would be very useful towards scaffold hopping aimed at avoiding the unnecessary complexity in cyclic peroxides, and ultimately act as a handy resource for the development of potential chemotherapeutics against Plasmodium species.
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Affiliation(s)
- Om P S Patel
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
| | - Richard M Beteck
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Lesetja J Legoabe
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
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37
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Kumar M, Skillman K, Duraisingh MT. Linking nutrient sensing and gene expression in Plasmodium falciparum blood-stage parasites. Mol Microbiol 2020; 115:891-900. [PMID: 33236377 DOI: 10.1111/mmi.14652] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 12/21/2022]
Abstract
Malaria is one of the most life-threatening infectious diseases worldwide, caused by infection of humans with parasites of the genus Plasmodium. The complex life cycle of Plasmodium parasites is shared between two hosts, with infection of multiple cell types, and the parasite needs to adapt for survival and transmission through significantly different metabolic environments. Within the blood-stage alone, parasites encounter changing levels of key nutrients, including sugars, amino acids, and lipids, due to differences in host dietary nutrition, cellular tropism, and pathogenesis. In this review, we consider the mechanisms that the most lethal of malaria parasites, Plasmodium falciparum, uses to sense nutrient levels and elicit changes in gene expression during blood-stage infections. These changes are brought about by several metabolic intermediates and their corresponding sensor proteins. Sensing of distinct nutritional signals can drive P. falciparum to alter the key blood-stage processes of proliferation, antigenic variation, and transmission.
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Affiliation(s)
- Manish Kumar
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Kristen Skillman
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Manoj T Duraisingh
- Department of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
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Patel OPS, Beteck RM, Legoabe LJ. Antimalarial application of quinones: A recent update. Eur J Med Chem 2020; 210:113084. [PMID: 33333397 DOI: 10.1016/j.ejmech.2020.113084] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 11/27/2020] [Accepted: 12/01/2020] [Indexed: 12/28/2022]
Abstract
Atovaquone belongs to a naphthoquinone class of drugs and is used in combination with proguanil (Malarone) for the treatment of acute, uncomplicated malaria caused by Plasmodium falciparum (including chloroquine-resistant P. falciparum/P. vivax). Numerous quinone-derived compounds have attracted considerable attention in the last few decades due to their potential in antimalarial drug discovery. Several semi-synthetic derivatives of natural quinones, synthetic quinones (naphtho-/benzo-quinone, anthraquinones, thiazinoquinones), and quinone-based hybrids were explored for their in vitro and in vivo antimalarial activities. A careful literature survey revealed that this topic has not been compiled as a review article so far. Therefore, we herein summarise the recent discovery (the year 2009-2020) of quinone based antimalarial compounds in chronological order. This compilation would be very useful towards the exploration of novel quinone-derived compounds against malarial parasites with promising efficacy and lesser side effects.
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Affiliation(s)
- Om P S Patel
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
| | - Richard M Beteck
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Lesetja J Legoabe
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
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Izrael R, Marton L, Nagy GN, Pálinkás HL, Kucsma N, Vértessy BG. Identification of a nuclear localization signal in the Plasmodium falciparum CTP: phosphocholine cytidylyltransferase enzyme. Sci Rep 2020; 10:19739. [PMID: 33184408 PMCID: PMC7665022 DOI: 10.1038/s41598-020-76829-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/02/2020] [Indexed: 12/30/2022] Open
Abstract
The phospholipid biosynthesis of the malaria parasite, Plasmodium falciparum is a key process for its survival and its inhibition is a validated antimalarial therapeutic approach. The second and rate-limiting step of the de novo phosphatidylcholine biosynthesis is catalysed by CTP: phosphocholine cytidylyltransferase (PfCCT), which has a key regulatory function within the pathway. Here, we investigate the functional impact of the key structural differences and their respective role in the structurally unique pseudo-heterodimer PfCCT protein in a heterologous cellular context using the thermosensitive CCT-mutant CHO-MT58 cell line. We found that a Plasmodium-specific lysine-rich insertion within the catalytic domain of PfCCT acts as a nuclear localization signal and its deletion decreases the nuclear propensity of the protein in the model cell line. We further showed that the putative membrane-binding domain also affected the nuclear localization of the protein. Moreover, activation of phosphatidylcholine biosynthesis by phospholipase C treatment induces the partial nuclear-to-cytoplasmic translocation of PfCCT. We additionally investigated the cellular function of several PfCCT truncated constructs in a CHO-MT58 based rescue assay. In absence of the endogenous CCT activity we observed that truncated constructs lacking the lysine-rich insertion, or the membrane-binding domain provided similar cell survival ratio as the full length PfCCT protein.
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Affiliation(s)
- Richard Izrael
- Institute of Enzymology, Research Centre for Natural Sciences, 1117, Budapest, Hungary.
- Doctoral School of Multidisciplinary Medical Sciences, University of Szeged, 6720, Szeged, Hungary.
- Department of Applied Biotechnology, Budapest University of Technology and Economics, 1111, Budapest, Hungary.
| | - Lívia Marton
- Institute of Enzymology, Research Centre for Natural Sciences, 1117, Budapest, Hungary
| | - Gergely N Nagy
- Institute of Enzymology, Research Centre for Natural Sciences, 1117, Budapest, Hungary
- Department of Applied Biotechnology, Budapest University of Technology and Economics, 1111, Budapest, Hungary
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Hajnalka L Pálinkás
- Institute of Enzymology, Research Centre for Natural Sciences, 1117, Budapest, Hungary
- Doctoral School of Multidisciplinary Medical Sciences, University of Szeged, 6720, Szeged, Hungary
- Department of Applied Biotechnology, Budapest University of Technology and Economics, 1111, Budapest, Hungary
| | - Nóra Kucsma
- Institute of Enzymology, Research Centre for Natural Sciences, 1117, Budapest, Hungary
| | - Beáta G Vértessy
- Institute of Enzymology, Research Centre for Natural Sciences, 1117, Budapest, Hungary.
- Department of Applied Biotechnology, Budapest University of Technology and Economics, 1111, Budapest, Hungary.
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Surur AS, Huluka SA, Mitku ML, Asres K. Indole: The After Next Scaffold of Antiplasmodial Agents? Drug Des Devel Ther 2020; 14:4855-4867. [PMID: 33204071 PMCID: PMC7666986 DOI: 10.2147/dddt.s278588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/12/2020] [Indexed: 12/23/2022] Open
Abstract
Malaria remains a global public health problem due to the uphill fight against the causative Plasmodium parasites that are relentless in developing resistance. Indole-based antiplasmodial compounds are endowed with multiple modes of action, of which inhibition of hemozoin formation is the major mechanism of action reported for compounds such as cryptolepine, flinderoles, and isosungucine. Indole-based compounds exert their potent activity against chloroquine-resistant Plasmodium strains by inhibiting hemozoin formation in a mode of action different from that of chloroquine or through a novel mechanism of action. For example, dysregulating the sodium and osmotic homeostasis of Plasmodium through inhibition of PfATP4 is the novel mechanism of cipargamin. The potential of developing multi-targeted compounds through molecular hybridization ensures the existence of indole-based compounds in the antimalarial pipeline.
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Affiliation(s)
| | - Solomon Assefa Huluka
- Department of Pharmacology and Clinical Pharmacy, Addis Ababa University, Addis Ababa, Ethiopia
| | | | - Kaleab Asres
- Department of Pharmaceutical Chemistry and Pharmacognosy, Addis Ababa University, Addis Ababa, Ethiopia
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41
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Shibeshi MA, Kifle ZD, Atnafie SA. Antimalarial Drug Resistance and Novel Targets for Antimalarial Drug Discovery. Infect Drug Resist 2020; 13:4047-4060. [PMID: 33204122 PMCID: PMC7666977 DOI: 10.2147/idr.s279433] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/29/2020] [Indexed: 12/16/2022] Open
Abstract
Malaria is among the most devastating and widespread tropical parasitic diseases in which most prevalent in developing countries. Antimalarial drug resistance is the ability of a parasite strain to survive and/or to multiply despite the administration and absorption of medicine given in doses equal to or higher than those usually recommended. Among the factors which facilitate the emergence of resistance to existing antimalarial drugs: the parasite mutation rate, the overall parasite load, the strength of drug selected, the treatment compliance, poor adherence to malaria treatment guideline, improper dosing, poor pharmacokinetic properties, fake drugs lead to inadequate drug exposure on parasites, and poor-quality antimalarial may aid and abet resistance. Malaria vaccines can be categorized into three categories: pre-erythrocytic, blood-stage, and transmission-blocking vaccines. Molecular markers of antimalarial drug resistance are used to screen for the emergence of resistance and assess its spread. It provides information about the parasite genetics associated with resistance, either single nucleotide polymorphisms or gene copy number variations which are associated with decreased susceptibility of parasites to antimalarial drugs. Glucose transporter PfHT1, kinases (Plasmodium kinome), food vacuole, apicoplast, cysteine proteases, and aminopeptidases are the novel targets for the development of new antimalarial drugs. Therefore, this review summarizes the antimalarial drug resistance and novel targets of antimalarial drugs.
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Affiliation(s)
- Melkamu Adigo Shibeshi
- Department of Pharmacology, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Zemene Demelash Kifle
- Department of Pharmacology, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Seyfe Asrade Atnafie
- Department of Pharmacology, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
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A Novel Series of [1,2,4]Triazolo[4,3-a]Pyridine Sulfonamides as Potential Antimalarial Agents: In Silico Studies, Synthesis and In Vitro Evaluation. Molecules 2020; 25:molecules25194485. [PMID: 33007887 PMCID: PMC7582516 DOI: 10.3390/molecules25194485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 11/17/2022] Open
Abstract
For the development of new and potent antimalarial drugs, we designed the virtual library with three points of randomization of novel [1,2,4]triazolo[4,3-a]pyridines bearing a sulfonamide fragment. The library of 1561 compounds has been investigated by both virtual screening and molecular docking methods using falcipain-2 as a target enzyme. 25 chosen hits were synthesized and evaluated for their antimalarial activity in vitro against Plasmodium falciparum. 3-Ethyl-N-(3-fluorobenzyl)-N-(4-methoxyphenyl)-[1,2,4]triazolo[4,3-a]pyridine-6-sulfonamide and 2-(3-chlorobenzyl)-8-(piperidin-1-ylsulfonyl)-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one showed in vitro good antimalarial activity with inhibitory concentration IC50 = 2.24 and 4.98 μM, respectively. This new series of compounds may serve as a starting point for future antimalarial drug discovery programs.
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Jiang X, Yuan Y, Huang J, Zhang S, Luo S, Wang N, Pu D, Zhao N, Tang Q, Hirata K, Yang X, Jiao Y, Sakata-Kato T, Wu JW, Yan C, Kato N, Yin H, Yan N. Structural Basis for Blocking Sugar Uptake into the Malaria Parasite Plasmodium falciparum. Cell 2020; 183:258-268.e12. [PMID: 32860739 DOI: 10.1016/j.cell.2020.08.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 07/08/2020] [Accepted: 08/07/2020] [Indexed: 11/25/2022]
Abstract
Plasmodium species, the causative agent of malaria, rely on glucose for energy supply during blood stage. Inhibition of glucose uptake thus represents a potential strategy for the development of antimalarial drugs. Here, we present the crystal structures of PfHT1, the sole hexose transporter in the genome of Plasmodium species, at resolutions of 2.6 Å in complex with D-glucose and 3.7 Å with a moderately selective inhibitor, C3361. Although both structures exhibit occluded conformations, binding of C3361 induces marked rearrangements that result in an additional pocket. This inhibitor-binding-induced pocket presents an opportunity for the rational design of PfHT1-specific inhibitors. Among our designed C3361 derivatives, several exhibited improved inhibition of PfHT1 and cellular potency against P. falciparum, with excellent selectivity to human GLUT1. These findings serve as a proof of concept for the development of the next-generation antimalarial chemotherapeutics by simultaneously targeting the orthosteric and allosteric sites of PfHT1.
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Affiliation(s)
- Xin Jiang
- State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China; Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yafei Yuan
- State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China; Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jian Huang
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Shuo Zhang
- State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China; Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Shuchen Luo
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Nan Wang
- State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China; Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Debing Pu
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
| | - Na Zhao
- Global Health Drug Discovery Institute, Zhongguancun Dongsheng International Science Park, 1 North Yongtaizhuang Road, Beijing 100192, China
| | - Qingxuan Tang
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
| | - Kunio Hirata
- Advanced Photon Technology Division, Research Infrastructure Group, SR Life Science Instrumentation Unit, RIKEN/SPring-8 Center, Hyogo 679-5148, Japan
| | - Xikang Yang
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yaqing Jiao
- Global Health Drug Discovery Institute, Zhongguancun Dongsheng International Science Park, 1 North Yongtaizhuang Road, Beijing 100192, China
| | - Tomoyo Sakata-Kato
- Global Health Drug Discovery Institute, Zhongguancun Dongsheng International Science Park, 1 North Yongtaizhuang Road, Beijing 100192, China
| | - Jia-Wei Wu
- Institute of Molecular Enzymology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Chuangye Yan
- State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China; Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Nobutaka Kato
- Global Health Drug Discovery Institute, Zhongguancun Dongsheng International Science Park, 1 North Yongtaizhuang Road, Beijing 100192, China
| | - Hang Yin
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China.
| | - Nieng Yan
- State Key Laboratory of Membrane Biology, Tsinghua University, Beijing 100084, China; Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing 100084, China; Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing 100084, China; School of Life Sciences, Tsinghua University, Beijing 100084, China.
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Chugh A, Kumar A, Verma A, Kumar S, Kumar P. A review of antimalarial activity of two or three nitrogen atoms containing heterocyclic compounds. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02604-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Carolino K, Winzeler EA. The antimalarial resistome - finding new drug targets and their modes of action. Curr Opin Microbiol 2020; 57:49-55. [PMID: 32682267 PMCID: PMC7763834 DOI: 10.1016/j.mib.2020.06.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 12/20/2022]
Abstract
To this day, malaria remains a global burden, affecting millions of people, especially those in sub-Saharan Africa and Asia. The rise of drug resistance to current antimalarial treatments, including artemisinin-based combination therapies, has made discovering new small molecule compounds with novel modes of action an urgent matter. The concerted effort to construct enormous compound libraries and develop high-throughput phenotypic screening assays to find compounds effective at specifically clearing malaria-causing Plasmodium parasites at any stage of the life cycle has provided many antimalarial prospects, but does not indicate their target or mode of action. Here, we review recent advances in antimalarial drug discovery efforts, focusing on the following 'omics' approaches in mode of action studies: IVIEWGA, CETSA, metabolomic profiling.
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Affiliation(s)
- Krypton Carolino
- Department of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, United States
| | - Elizabeth A Winzeler
- Department of Pediatrics, University of California, San Diego, School of Medicine, La Jolla, CA 92093, United States.
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Abstract
Organometallic compounds are molecules that contain at least one metal-carbon bond. Due to resistance of the Plasmodium parasite to traditional organic antimalarials, the use of organometallic compounds has become widely adopted in antimalarial drug discovery. Ferroquine, which was developed due to the emergence of chloroquine resistance, is currently the most advanced organometallic antimalarial drug and has paved the way for the development of new organometallic antimalarials. In this review, a general overview of organometallic antimalarial compounds and their antimalarial activity in comparison to purely organic antimalarials are presented. Furthermore, recent developments in the field are discussed, and future applications of this emerging class of therapeutics in antimalarial drug discovery are suggested.
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Oladeji OS, Oluyori AP, Bankole DT, Afolabi TY. Natural Products as Sources of Antimalarial Drugs: Ethnobotanical and Ethnopharmacological Studies. SCIENTIFICA 2020; 2020:7076139. [PMID: 32455050 PMCID: PMC7238349 DOI: 10.1155/2020/7076139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 04/06/2020] [Accepted: 04/24/2020] [Indexed: 06/03/2023]
Abstract
MATERIALS AND METHODS For this study, relevant information was procured from the inhabitants via a structured questionnaire to procure the general knowledge of antimalarial medicinal plants. Results and Discussion. A total of 90 interviewees (44 men and 46 women) were involved in this survey. A total of 59 medicinal species were identified, which were dispersed in 33 families (Asteraceae (6), Apocynaceae (5), Anacardiaceae, Annonaceae, Fabaceae, Malvaceae, Meliaceae, Poaceae, and Rubiaceae (3 each), Phyllanthaceae (2)) totaling 49% of the cited species. The most cited plants are Azadirachta indica (42), Mangifera indica (38), Carica papaya (28), Cymbopogon citratus (27), Cassia fistula (15), Morinda lucida (14), Anacardium occidentale and Vernonia amygdalina (13 each), Helianthus annuus (11), Enantia chlorantha (10), and Moringa oleifera (9) A total of 105 citations were recorded for the plant parts used (leaf (46), bark (17), fruits (9), root (9), latex (11), stem (11), and inflorescence (2)) while decoction (59%), maceration (25%), infusion (9%), and exudation (7%) were the methods of preparation. Use Values (UVs) of 0.47 to 0.11 were recorded for the frequently used antimalarial plants. The Efficiency Levels (ELs) of 11 different medicinal plants stated by the respondents were Azadirachta indica, Cassia fistula and Morinda lucida (12), Chromolaena odorata (10), Mangifera indica, Enantia chlorantha and Helianthus annuus (8), Cymbopogon citratus (7), Gossypium arboretum (4), Landolphia dulcis (3), and Aloe vera (2) Cocos nucifera, Curcuma longa, Forkia biglobosa, and Musa acuminate are mentioned for the first time in the study area with little or no reported antiplasmodial activities. CONCLUSION The study appraised the commonly used antimalarial plants in the study areas. Therefore, commitment to scientifically explore the bioactive compounds, antimalarial potential and toxicological profile of these plants is inevitable as they could lead to novel natural products for effective malaria therapy.
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Affiliation(s)
- Oluwole Solomon Oladeji
- Natural Products Research Unit, Department of Physical Sciences, College of Pure and Applied Sciences, Landmark University, PMB 1001, Omu Aran, Kwara State, Nigeria
| | - Abimbola Peter Oluyori
- Natural Products Research Unit, Department of Physical Sciences, College of Pure and Applied Sciences, Landmark University, PMB 1001, Omu Aran, Kwara State, Nigeria
| | - Deborah Temitope Bankole
- Natural Products Research Unit, Department of Physical Sciences, College of Pure and Applied Sciences, Landmark University, PMB 1001, Omu Aran, Kwara State, Nigeria
| | - Tokunbo Yemisi Afolabi
- Natural Products Research Unit, Department of Physical Sciences, College of Pure and Applied Sciences, Landmark University, PMB 1001, Omu Aran, Kwara State, Nigeria
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Abstract
As the world gets closer to eliminating malaria, the scientific community worldwide has begun to realize the importance of malaria transmission-blocking interventions. The onus of breaking the life cycle of the human malaria parasite Plasmodium falciparum predominantly rests upon transmission-blocking drugs because of emerging resistance to commonly used schizonticides and insecticides. This third part of our review series on malaria transmission-blocking entails transmission-blocking potential of preclinical transmission-blocking antimalarials and other non-malaria drugs/experimental compounds that are not in clinical or preclinical development for malaria but possess transmission-blocking potential. Collective analysis of the structure and the activity of these experimental compounds might pave the way toward generation of novel prototypes of next-generation transmission-blocking drugs.
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Qin HL, Zhang ZW, Lekkala R, Alsulami H, Rakesh K. Chalcone hybrids as privileged scaffolds in antimalarial drug discovery: A key review. Eur J Med Chem 2020; 193:112215. [DOI: 10.1016/j.ejmech.2020.112215] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/07/2020] [Accepted: 03/07/2020] [Indexed: 01/20/2023]
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