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Novel Curcumin Monocarbonyl Analogue-Dithiocarbamate hybrid molecules target human DNA ligase I and show improved activity against colon cancer. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02983-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Thompson MJ, Gotham VJB, Ciani B, Grasby JA. A conserved loop-wedge motif moderates reaction site search and recognition by FEN1. Nucleic Acids Res 2019; 46:7858-7872. [PMID: 29878258 PMCID: PMC6125683 DOI: 10.1093/nar/gky506] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 05/23/2018] [Indexed: 12/24/2022] Open
Abstract
DNA replication and repair frequently involve intermediate two-way junction structures with overhangs, or flaps, that must be promptly removed; a task performed by the essential enzyme flap endonuclease 1 (FEN1). We demonstrate a functional relationship between two intrinsically disordered regions of the FEN1 protein, which recognize opposing sides of the junction and order in response to the requisite substrate. Our results inform a model in which short-range translocation of FEN1 on DNA facilitates search for the annealed 3'-terminus of a primer strand, which is recognized by breaking the terminal base pair to generate a substrate with a single nucleotide 3'-flap. This recognition event allosterically signals hydrolytic removal of the 5'-flap through reaction in the opposing junction duplex, by controlling access of the scissile phosphate diester to the active site. The recognition process relies on a highly-conserved 'wedge' residue located on a mobile loop that orders to bind the newly-unpaired base. The unanticipated 'loop-wedge' mechanism exerts control over substrate selection, rate of reaction and reaction site precision, and shares features with other enzymes that recognize irregular DNA structures. These new findings reveal how FEN1 precisely couples 3'-flap verification to function.
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Affiliation(s)
- Mark J Thompson
- Centre for Chemical Biology, Department of Chemistry, Krebs Institute, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK
| | - Victoria J B Gotham
- Centre for Chemical Biology, Department of Chemistry, Krebs Institute, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK
| | - Barbara Ciani
- Centre for Chemical Biology, Department of Chemistry, Krebs Institute, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK
| | - Jane A Grasby
- Centre for Chemical Biology, Department of Chemistry, Krebs Institute, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK
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Paz MFCJ, Gomes Júnior AL, de Alencar MVOB, Tabrez S, Islam MT, Jabir NR, Oves M, Alam MZ, Asghar MN, Ali ES, da Conceição Machado K, da Conceição Machado K, da Silva FCC, Sobral ALP, de Castro E Sousa JM, de Moraes GP, Mishra SK, da Silva J, de Carvalho Melo-Cavalcante AA. Effect of Diets, Familial History, and Alternative Therapies on Genomic Instability of Breast Cancer Patients. Appl Biochem Biotechnol 2018; 188:282-296. [PMID: 30430345 DOI: 10.1007/s12010-018-2918-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/05/2018] [Indexed: 12/30/2022]
Abstract
This study evaluates a correlation between family history, micronutrients intake, and alternative therapies with genetic instability, before and during breast cancer treatment. For this study, a total of 150 women were selected. Among those, 50 women were breast cancer patients on chemotherapy, while 50 breast cancer patients were on radiotherapy, and 50 were healthy females. All the participants signed the informed consent form and answered the public health questionnaire. Samples of buccal epithelial and peripheral blood cells were collected and analyzed through micronucleus and comet assays. The cells were evaluated for apoptosis and DNA damage. Results showed the association of patients' family history with an increase in toxicogenetic damage before and during cancer therapy. On the other hand, patients with late-onset cancer also presented genetic instability before and during therapy, along with those who did not take sufficient vegetables and alternative therapies. A positive correlation was observed between the genetic instability and alternative therapies, while inverse correlation was recorded with the vegetable consumption. Results clearly explain that the nutritional aspects and alternative therapies influence the genetic instability before and during cancer therapies especially in radiotherapy treated patients. Our data could be used for the monitoring therapies and management of breast cancer patients.
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Affiliation(s)
- Márcia Fernanda Correia Jardim Paz
- Laboratory of Genetic Toxicology, PPGBioSaúde and PPGGTA, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, Prédio 22, Sala 22 (4° Andar), Canoas, RS, 92425-900, Brazil.,Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Antônio Luiz Gomes Júnior
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | | | - Shams Tabrez
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Muhammad Torequl Islam
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam. .,Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam.
| | - Nasimudeen R Jabir
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Mohammad Oves
- Center of Excellence in Environmental Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Mohammad Zubair Alam
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | | | - Eunüs S Ali
- Gaco Pharmaceuticals and Research Laboratory, Dhaka, 1000, Bangladesh.,College of Medicine and Public Health, Flinders University, Bedford Park, 5042, Australia
| | - Keylla da Conceição Machado
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Kátia da Conceição Machado
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Felipe Cavalcanti Carneiro da Silva
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - André Luiz Pinho Sobral
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - João Marcelo de Castro E Sousa
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Germano Pinho de Moraes
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Siddhartha Kumar Mishra
- Cancer Biology Laboratory, School of Biological Sciences (Zoology), Dr. Harisingh Gour Central University, Sagar, 470003, India
| | - Juliana da Silva
- Laboratory of Genetic Toxicology, PPGBioSaúde and PPGGTA, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, Prédio 22, Sala 22 (4° Andar), Canoas, RS, 92425-900, Brazil
| | - Ana Amélia de Carvalho Melo-Cavalcante
- Northeast Biotechnology Network (RENORBIO), Post-Graduate Program in Pharmaceutical Science, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
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Braga AL, de Meneses AAPM, Santos JVDO, Dos Reis AC, de Lima RMT, da Mata AMOF, Paz MFCJ, Alves LBDS, Shaw S, Uddin SJ, Rouf R, Das AK, Dev S, Shil MC, Shilpi JA, Khan IN, Islam MT, Ali ES, Mubarak MS, Mishra SK, E Sousa JMDC, Melo-Cavalcante AADC. Toxicogenetic study of omeprazole and the modulatory effects of retinol palmitate and ascorbic acid on Allium cepa. CHEMOSPHERE 2018; 204:220-226. [PMID: 29656158 DOI: 10.1016/j.chemosphere.2018.04.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 03/29/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
Omeprazole (OME) is a proton pump inhibitor used for the treatment of various gastric and intestinal disease; however, studies on its effects on the genetic materials are still restricted. The present study aimed to evaluate possible toxicogenic effects of OME in Allium cepa meristems with the application of cytogenetic biomarkers for DNA damage, mutagenic, toxic and cytotoxic effects. Additionally, retinol palmitate (RP) and ascorbic acid (AA) were also co-treated with OME to evaluate possible modulatory effects of OME-induced cytogenetic damages. OME was tested at 10, 20 and 40 μg/mL, while RP and AA at 55 μg/mL and 352.2 μg/mL, respectively. Copper sulphate (0.6 μg/mL) and dechlorinated water were used as positive control and negative control, respectively. The results suggest that OME induced genotoxicity and mutagenicity in A. cepa at all tested concentrations. It was noted that cotreatment of OME with the antioxidant vitamins RP and/or AA significantly (p < 0.05) inhibited and/or modulated all toxicogenic damages induced by OME. These observations demonstrate their antigenotoxic, antimutagenic, antitoxic and anticitotoxic effects in A. cepa. This study indicates that application of antioxidants may be useful tools to overcome OME-induced toxic effects.
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Affiliation(s)
- Antonio Lima Braga
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Ag-Anne Pereira Melo de Meneses
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - José Victor de Oliveira Santos
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Antonielly Campinho Dos Reis
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Rosália Maria Tôrres de Lima
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Ana Maria Oliveira Ferreira da Mata
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Márcia Fernanda Correia Jardim Paz
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | | | - Subrata Shaw
- Center for the Development of Therapeutics (CDoT), Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA, 02142, USA
| | - Shaikh Jamal Uddin
- Pharmacy Discipline, School of Life Sciences, Khulna University, Khulna, 9208, Bangladesh
| | - Razina Rouf
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science & Technology University, Gopalganj, Bangladesh
| | - Asish Kumar Das
- Pharmacy Discipline, School of Life Sciences, Khulna University, Khulna, 9208, Bangladesh
| | - Shrabanti Dev
- Pharmacy Discipline, School of Life Sciences, Khulna University, Khulna, 9208, Bangladesh
| | - Manik Chandra Shil
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Jamil A Shilpi
- Pharmacy Discipline, School of Life Sciences, Khulna University, Khulna, 9208, Bangladesh
| | - Ishaq N Khan
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, 25100, Pakistan
| | - Muhammad Torequl Islam
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | - Eunüs S Ali
- Gaco Pharmaceuticals and Research Laboratory, Dhaka, 1000, Bangladesh; College of Medicine and Public Health, Flinders University, Bedford Park, 5042, Adelaide, Australia
| | | | - Siddhartha Kumar Mishra
- Cancer Biology Laboratory, School of Biological Sciences (Zoology), Dr. Harisingh Gour Central University, Sagar, 470003, India.
| | - João Marcelo de Castro E Sousa
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Department of Biological Sciences, Federal University of Piauí, Picos, Piauí, 64.607-670, Brazil
| | - Ana Amélia de Carvalho Melo-Cavalcante
- Laboratory of Genetics and Toxicology (LAPGENIC), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
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Deshmukh AL, Chandra S, Singh DK, Siddiqi MI, Banerjee D. Identification of human flap endonuclease 1 (FEN1) inhibitors using a machine learning based consensus virtual screening. MOLECULAR BIOSYSTEMS 2018; 13:1630-1639. [PMID: 28685785 DOI: 10.1039/c7mb00118e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Human Flap endonuclease1 (FEN1) is an enzyme that is indispensable for DNA replication and repair processes and inhibition of its Flap cleavage activity results in increased cellular sensitivity to DNA damaging agents (cisplatin, temozolomide, MMS, etc.), with the potential to improve cancer prognosis. Reports of the high expression levels of FEN1 in several cancer cells support the idea that FEN1 inhibitors may target cancer cells with minimum side effects to normal cells. In this study, we used large publicly available, high-throughput screening data of small molecule compounds targeted against FEN1. Two machine learning algorithms, Support Vector Machine (SVM) and Random Forest (RF), were utilized to generate four classification models from huge PubChem bioassay data containing probable FEN1 inhibitors and non-inhibitors. We also investigated the influence of randomly selected Zinc-database compounds as negative data on the outcome of classification modelling. The results show that the SVM model with inactive compounds was superior to RF with Matthews's correlation coefficient (MCC) of 0.67 for the test set. A Maybridge database containing approximately 53 000 compounds was screened and top ranking 5 compounds were selected for enzyme and cell-based in vitro screening. The compound JFD00950 was identified as a novel FEN1 inhibitor with in vitro inhibition of flap cleavage activity as well as cytotoxic activity against a colon cancer cell line, DLD-1.
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Affiliation(s)
- Amit Laxmikant Deshmukh
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, B.S. 10/1, Janakipuram Extension, Sitapur Road, Lucknow, 226031, India.
| | - Sharat Chandra
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, B.S. 10/1, Janakipuram Extension, Sitapur Road, Lucknow, 226031, India. and AcSIR (Academy of Scientific and Innovative Research), India
| | - Deependra Kumar Singh
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, B.S. 10/1, Janakipuram Extension, Sitapur Road, Lucknow, 226031, India.
| | - Mohammad Imran Siddiqi
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, B.S. 10/1, Janakipuram Extension, Sitapur Road, Lucknow, 226031, India. and AcSIR (Academy of Scientific and Innovative Research), India
| | - Dibyendu Banerjee
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, B.S. 10/1, Janakipuram Extension, Sitapur Road, Lucknow, 226031, India. and AcSIR (Academy of Scientific and Innovative Research), India
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Gupta S, Maurya P, Upadhyay A, Kushwaha P, Krishna S, Siddiqi MI, Sashidhara KV, Banerjee D. Synthesis and bio-evaluation of indole-chalcone based benzopyrans as promising antiligase and antiproliferative agents. Eur J Med Chem 2018; 143:1981-1996. [DOI: 10.1016/j.ejmech.2017.11.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/16/2017] [Accepted: 11/04/2017] [Indexed: 02/06/2023]
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