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Cáceres-Castillo D, Mirón-López G, García-López M, Chan-Navarro R, Quijano-Quiñones R, Briceño-Vargas F, Cauich-Kumul R, Morales-Rojas H, Herrera-España A. Boronate Derivatives of Damnacanthal: Synthesis, Characterization, Optical Properties and Theoretical Calculations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Li R, Li H, Lan J, Yang D, Lin X, Xu H, Han B, Yang M, Su B, Liu F, Jiang W. Damnacanthal isolated from morinda species inhibited ovarian cancer cell proliferation and migration through activating autophagy. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 100:154084. [PMID: 35421676 DOI: 10.1016/j.phymed.2022.154084] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/28/2022] [Accepted: 03/26/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Ovarian cancer is a very common gynecological malignant tumor. Natural products are important sources of chemotherapy drugs for ovarian cancer. Damnacanthal is an anthraquinone derivative with anti-cancer pharmacological properties. OBJECTIVE This study aimed to investigate the mechanisms underlying damnacanthal's effects against ovarian cancer. METHODS In vitro experiments, CCK8, colony formation and flow cytometry assays were used to evaluate the anti-ovarian cancer effect of damnacanthal on SKVO3 and A2780 cells. The wound healing tests and the transwell invasion assays were used to detect the migration and infiltration of ovarian cancer cells. Western Blot assays and immunofluorescence staining were used to measure autophagy levels. In vivo experiments, the anti-ovarian cancer effect of damnacanthal was further evaluated in a xenograft nude mouse model of SKVO3 cells. RESULTS Damnacanthal induced significant cell death and apoptosis, as well as significant inhibition in migration and invasion, in SKVO3 and A2780 cells, Furthermore, damnacanthal induced cell cycle arrest by increasing the protein levels of p27Kip1 and decreasing cyclin D1 levels. In addition, damnacanthal induced a significant accumulation of autophagosomes, accompanied with an increase in LC3II protein levels, and a decrease in p62 protein levels. 3-methyladenine, an autophagy formation inhibitor, significantly mitigated the damnacanthal-induced apoptosis and migration hindrance, as well as the decline in cell viability. Furthermore, the inactivation of ERK and its downstream effector mTOR signaling pathways, rather than Akt or P38 pathway, were involved in damnacanthal's activation in autophagy. In addition, TBHQ, an ERK activator, significantly inhibited damnacanthal-boosted LC3 II levels and autophagosome accumulation, and reversed damnacanthal-induced cell death, apoptosis, cell cycle arrest and migration hindrance. Finally, the anti-ovarian cancer effect of damnacanthal was confirmed in the orthotopic xenograft model of SKVO3 cells in nude mice, with tumor growth being significantly inhibited comparably to the efficacy of cisplatin. Damnacanthal was also synergistic with cisplatin and showed inhibition in cisplatin-resistant ovarian cancer cells. CONCLUSION Damnacanthal inhibited the growth of ovarian cancer via the ERK/mTOR/autophagy signaling cascade, indicating that it may be a potential anti-ovarian cancer drug candidate.
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Affiliation(s)
- Ruli Li
- Molecular Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - He Li
- Molecular Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jie Lan
- Molecular Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Dongmei Yang
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Xinjing Lin
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Hongling Xu
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Bin Han
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Ming Yang
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Bo Su
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Fu Liu
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - Wei Jiang
- Molecular Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
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Malik MS, Alsantali RI, Jassas RS, Alsimaree AA, Syed R, Alsharif MA, Kalpana K, Morad M, Althagafi II, Ahmed SA. Journey of anthraquinones as anticancer agents - a systematic review of recent literature. RSC Adv 2021; 11:35806-35827. [PMID: 35492773 PMCID: PMC9043427 DOI: 10.1039/d1ra05686g] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/06/2021] [Indexed: 12/19/2022] Open
Abstract
Anthraquinones are privileged chemical scaffolds that have been used for centuries in various therapeutic applications. The anthraquinone moiety forms the core of various anticancer agents. However, the emergence of drug-resistant cancers warrants the development of new anticancer agents. The research endeavours towards new anthraquinone-based compounds are increasing rapidly in recent years. They are used as a core chemical template to achieve structural modifications, resulting in the development of new anthraquinone-based compounds as promising anticancer agents. Mechanistically, most of the anthraquinone-based compounds inhibit cancer progression by targeting essential cellular proteins. Herein, we review new anthraquinone analogues that have been developed in recent years as anticancer agents. This includes a systematic review of the recent literature (2005-2021) on anthraquinone-based compounds in cell-based models and key target proteins such as kinases, topoisomerases, telomerases, matrix metalloproteinases and G-quadruplexes involved in the viability of cancer cells. In addition to this, the developments in PEG-based delivery of anthraquinones and the toxicity aspects of anthraquinone derivatives are also discussed. The review dispenses a compact background knowledge to understanding anthraquinones for future research on the expansion of anticancer therapeutics.
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Affiliation(s)
- M Shaheer Malik
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Reem I Alsantali
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University P. O. Box 11099 Taif 21944 Saudi Arabia
| | - Rabab S Jassas
- Department of Chemistry, Jamoum University College, Umm Al-Qura University 21955 Makkah Saudi Arabia
| | - Abdulrahman A Alsimaree
- Department of Basic Science (Chemistry), College of Science and Humanities, Shaqra University Afif Saudi Arabia
| | - Riyaz Syed
- Centalla Discovery, JHUB, Jawaharlal Nehru Technological University Hyderabad Kukatpally Hyderabad 500085 India
| | - Meshari A Alsharif
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Kulkarni Kalpana
- Department of Humanities and Sciences (Chemistry), Gokaraju Rangaraju Institute of Engineering and Technology Bachupally Hyderabad 500090 India
| | - Moataz Morad
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Ismail I Althagafi
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Saleh A Ahmed
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
- Department of Chemistry, Faculty of Science, Assiut University 71516 Assiut Egypt
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Watroly MN, Sekar M, Fuloria S, Gan SH, Jeyabalan S, Wu YS, Subramaniyan V, Sathasivam KV, Ravi S, Mat Rani NNI, Lum PT, Vaijanathappa J, Meenakshi DU, Mani S, Fuloria NK. Chemistry, Biosynthesis, Physicochemical and Biological Properties of Rubiadin: A Promising Natural Anthraquinone for New Drug Discovery and Development. Drug Des Devel Ther 2021; 15:4527-4549. [PMID: 34764636 PMCID: PMC8576757 DOI: 10.2147/dddt.s338548] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/13/2021] [Indexed: 12/11/2022] Open
Abstract
Anthraquinones (AQs) are found in a variety of consumer products, including foods, nutritional supplements, drugs, and traditional medicines, and have a wide range of pharmacological actions. Rubiadin, a 1,3-dihydroxy-2-methyl anthraquinone, primarily originates from Rubia cordifolia Linn (Rubiaceae). It was first discovered in 1981 and has been reported for many biological activities. However, no review has been reported so far to create awareness about this molecule and its role in future drug discovery. Therefore, the present review aimed to provide comprehensive evidence of Rubiadin's phytochemistry, biosynthesis, physicochemical properties, biological properties and therapeutic potential. Relevant literature was gathered from numerous scientific databases including PubMed, ScienceDirect, Scopus and Google Scholar between 1981 and up-to-date. The distribution of Rubiadin in numerous medicinal plants, as well as its method of isolation, synthesis, characterisation, physiochemical properties and possible biosynthesis pathways, was extensively covered in this review. Following a rigorous screening and tabulating, a thorough description of Rubiadin's biological properties was gathered, which were based on scientific evidences. Rubiadin fits all five of Lipinski's rule for drug-likeness properties. Then, the in depth physiochemical characteristics of Rubiadin were investigated. The simple technique for Rubiadin's isolation from R. cordifolia and the procedure of synthesis was described. Rubiadin is also biosynthesized via the polyketide and chorismate/o-succinylbenzoic acid pathways. Rubiadin is a powerful molecule with anticancer, antiosteoporotic, hepatoprotective, neuroprotective, anti-inflammatory, antidiabetic, antioxidant, antibacterial, antimalarial, antifungal, and antiviral properties. The mechanism of action for the majority of the pharmacological actions reported, however, is unknown. In addition to this review, an in silico molecular docking study was performed against proteins with PDB IDs: 3AOX, 6OLX, 6OSP, and 6SDC to support the anticancer properties of Rubiadin. The toxicity profile, pharmacokinetics and possible structural modifications were also described. Rubiadin was also proven to have the highest binding affinity to the targeted proteins in an in silico study; thus, we believe it may be a potential anticancer molecule. In order to present Rubiadin as a novel candidate for future therapeutic development, advanced studies on preclinical, clinical trials, bioavailability, permeability and administration of safe doses are necessary.
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Affiliation(s)
- Mohd Nasarudin Watroly
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, 30450, Malaysia
| | - Mahendran Sekar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, 30450, Malaysia
| | - Shivkanya Fuloria
- Faculty of Pharmacy & Centre of Excellence for Biomaterials Engineering, AIMST University, Kedah, 08100, Malaysia
| | - Siew Hua Gan
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor Darul Ehsan, 47500, Malaysia
| | - Srikanth Jeyabalan
- Department of Pharmacology, Sri Ramachandra Faculty of Pharmacy, Sri Ramachandra Institute of Higher Education and Research (DU), Chennai, Tamil Nadu, 600116, India
| | - Yuan Seng Wu
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, Selangor, 47500, Malaysia
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Selangor, 47500, Malaysia
| | | | - Kathiresan V Sathasivam
- Faculty of Applied Science & Centre of Excellence for Biomaterials Engineering, AIMST University, Kedah, 08100, Malaysia
| | - Subban Ravi
- Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, 640 021, India
| | - Nur Najihah Izzati Mat Rani
- Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, 30450, Malaysia
| | - Pei Teng Lum
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, 30450, Malaysia
| | - Jaishree Vaijanathappa
- Department of Pharmaceutical Chemistry, School of Life Sciences, JSS Academy of Higher Education and Research Mauritius, Vacoas, Mauritius
| | | | - Shankar Mani
- Department of Pharmaceutical Chemistry, Sri Adichunchanagiri College of Pharmacy, Adichunchanagiri University, Mandya, Karnataka, 571418, India
| | - Neeraj Kumar Fuloria
- Faculty of Pharmacy & Centre of Excellence for Biomaterials Engineering, AIMST University, Kedah, 08100, Malaysia
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2,6-Dimethoxybenzyl Bromide. MOLBANK 2021. [DOI: 10.3390/m1277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The unstable title compound has been characterized for the first time. Its melting point, UV, IR, 1H and 13C-NMR and high-resolution mass spectra are presented. The X-ray structure has also been determined and shows a rather long C–Br bond perpendicular to the otherwise planar molecule.
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Latifah SY, Gopalsamy B, Abdul Rahim R, Manaf Ali A, Haji Lajis N. Anticancer Potential of Damnacanthal and Nordamnacanthal from Morinda elliptica Roots on T-lymphoblastic Leukemia Cells. Molecules 2021; 26:molecules26061554. [PMID: 33808969 PMCID: PMC7998966 DOI: 10.3390/molecules26061554] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 12/24/2022] Open
Abstract
Background: This study reports on the cytotoxic properties of nordamnacanthal and damnacanthal, isolated from roots of Morinda elliptica on T-lymphoblastic leukaemia (CEM-SS) cell lines. Methods: MTT assay, DNA fragmentation, ELISA and cell cycle analysis were carried out. Results: Nordamnacanthal and damnacanthal at IC50 values of 1.7 μg/mL and10 μg/mL, respectively. At the molecular level, these compounds caused internucleosomal DNA cleavage producing multiple 180–200 bp fragments that are visible as a “ladder” on the agarose gel. This was due to the activation of the Mg2+/Ca2+-dependent endonuclease. The induction of apoptosis by nordamnacanthal was different from the one induced by damnacanthal, in a way that it occurs independently of ongoing transcription process. Nevertheless, in both cases, the process of dephosphorylation of protein phosphates 1 and 2A, the ongoing protein synthesis and the elevations of the cytosolic Ca2+ concentration were not needed for apoptosis to take place. Nordamnacanthal was found to have a cytotoxic effect by inducing apoptosis, while damnacanthal caused arrest at the G0/G1 phase of the cell cycle. Conclusion: Damnacanthal and nordamnacanthal have anticancer properties, and could act as potential treatment for T-lymphoblastic leukemia.
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Affiliation(s)
- Saiful Yazan Latifah
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
- Correspondence: ; Tel.: +603-89472308
| | - Banulata Gopalsamy
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
| | - Raha Abdul Rahim
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
| | - Abdul Manaf Ali
- Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin (UniSZA), Kuala 20300, Terengganu, Malaysia;
| | - Nordin Haji Lajis
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
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Bajracharya GB, Koju R, Ojha S, Nayak S, Subedi S, Sasai H. Plasticizers: Synthesis of phthalate esters via FeCl3-catalyzed nucleophilic addition of alcohols to phthalic anhydride. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100190] [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] Open
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Yi S, Kuang T, Miao Y, Xu Y, Wang Z, Dong LB, Tan N. Discovery and characterization of four glycosyltransferases involved in anthraquinone glycoside biosynthesis in Rubia yunnanensis. Org Chem Front 2020. [DOI: 10.1039/d0qo00579g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four new glycosyltransferases, which were discovered from Rubia yunnanensis for mediating anthraquinone glycoside biosynthesis, were identified through the analysis of broad substrates, sugar promiscuous, and regioselective glycosylation.
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Affiliation(s)
- Shanyong Yi
- State Key Laboratory of Natural Medicines
- Department of TCMs Pharmaceuticals
- School of Traditional Chinese Pharmacy
- China Pharmaceutical University
- Nanjing 211198
| | - Tongdong Kuang
- State Key Laboratory of Natural Medicines
- Department of TCMs Pharmaceuticals
- School of Traditional Chinese Pharmacy
- China Pharmaceutical University
- Nanjing 211198
| | - Yuanyuan Miao
- State Key Laboratory of Natural Medicines
- Department of TCMs Pharmaceuticals
- School of Traditional Chinese Pharmacy
- China Pharmaceutical University
- Nanjing 211198
| | - Yanqing Xu
- State Key Laboratory of Natural Medicines
- Department of TCMs Pharmaceuticals
- School of Traditional Chinese Pharmacy
- China Pharmaceutical University
- Nanjing 211198
| | - Zhe Wang
- State Key Laboratory of Natural Medicines
- Department of TCMs Pharmaceuticals
- School of Traditional Chinese Pharmacy
- China Pharmaceutical University
- Nanjing 211198
| | - Liao-Bin Dong
- State Key Laboratory of Natural Medicines
- Department of TCMs Pharmaceuticals
- School of Traditional Chinese Pharmacy
- China Pharmaceutical University
- Nanjing 211198
| | - Ninghua Tan
- State Key Laboratory of Natural Medicines
- Department of TCMs Pharmaceuticals
- School of Traditional Chinese Pharmacy
- China Pharmaceutical University
- Nanjing 211198
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Mohammed IA, Akhtar MN, Biau FJ, Tor YS, Zareen S, Binti Shahabudin S, Binti Abd Hamid H, Ul Haq Z, Khalil R, Khalaf RM. Isolation of Cardamonin and Pinostrobin Chalcone from the Rhizomes of Boesenbergia rotunda (L.) Mansf. and their Cytotoxic Effects on H-29 and MDA-MB-231 Cancer Cell Lines. ACTA ACUST UNITED AC 2019. [DOI: 10.2174/2210315509666190117151542] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
<P>Background: Breast cancer and human colon cancer are the most common types of cancer
in females and males, respectively. Breast cancer is the most common type of cancer after lung
and colon cancers. Natural products are an important source for drug discovery. Boesenbergia rotunda
(L.) Mansf. is commonly known as finger root, belonging to the Zingiberaceae family.
</P><P>
Objective: The aim of this study to isolate some natural compounds from the rhizomes of B. rotunda
(L.) Mansf., and to investigate their cytotoxicity against the human triple-negative breast cancer cell
(MDA-MB-231) and HT-29 colon cancer cell lines.
</P><P>
Methods: The dried rhizomes of B. rotunda were extracted with methanol. The methanolic extract
was further used for solvent-solvent extraction. Bioassay-guided extraction and isolation of the rhizomes
of the B. rotunda exhibited cytotoxic properties of hexane and dichloromethane fractions.
</P><P>
Results: Six major chemical constituents, pinostrobin (1), pinostrobin chalcone (2), cardamonin (3),
4,5-dihydrokawain (4), pinocembrin (5), and alpinetin (6) were isolated from the rhizomes of the B.
rotunda. All the chemical constituents were screened against the human triple-negative breast cancer
cell (MDA-MB-231) and HT-29 colon cancer cell lines. The compound cardamonin (3) (IC50 =
5.62±0.61 and 4.44±0.66 µg/mL) and pinostrobin chalcone (2), (IC50 = 20.42±2.23 and 22.51±0.42
μg/mL) were found to be potent natural cytotoxic compounds against MDA-MB-231 and HT-29 colon
cancer cell lines, respectively.
</P><P>
Conclusion: Cardamonin (3) and pinostrobin chalcone (2) were found to be the most potential natural
compounds against breast cancer cell line MDA-MB-231 and colon cancer HT-29 cell line.</P>
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Affiliation(s)
- Ibrahim Awad Mohammed
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Malaysia
| | - Muhammad Nadeem Akhtar
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Malaysia
| | - Foo Jhi Biau
- School of Pharmacy, Faculty of Health & Medical Sciences, Taylor's University, No. 1 Jalan Taylor's, 47500 Subang Jaya, Selangor, Malaysia
| | - Yin Sim Tor
- School of Biosciences, Faculty of Health & Medicine Sciences, Taylor's University, No. 1 Jalan Taylor's, 47500 Subang Jaya, Selangor, Malaysia
| | - Seema Zareen
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Malaysia
| | - Sakina Binti Shahabudin
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Gambang, Malaysia
| | | | - Zaheer Ul Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Ruqaiya Khalil
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Reem Maan Khalaf
- Faculty of Medicine, Department of Pharmacology, University Kebangsaan Malaysia UKM Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Malaysia
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Microbial Synthesis of Non-Natural Anthraquinone Glucosides Displaying Superior Antiproliferative Properties. Molecules 2018; 23:molecules23092171. [PMID: 30154376 PMCID: PMC6225150 DOI: 10.3390/molecules23092171] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/14/2018] [Accepted: 08/21/2018] [Indexed: 12/12/2022] Open
Abstract
Anthraquinones, naturally occurring bioactive compounds, have been reported to exhibit various biological activities, including anti-inflammatory, antiviral, antimicrobial, and anticancer effects. In this study, we biotransformed three selected anthraquinones into their novel O-glucoside derivatives, expressing a versatile glycosyltransferase (YjiC) from Bacillus licheniformis DSM 13 in Escherichia coli. Anthraflavic acid, alizarin, and 2-amino-3-hydroxyanthraquinone were exogenously fed to recombinant E. coli as substrate for biotransformation. The products anthraflavic acid-O-glucoside, alizarin 2-O-β-d-glucoside, and 2-amino-3-O-glucosyl anthraquinone produced in the culture broths were characterized by various chromatographic and spectroscopic analyses. The comparative anti-proliferative assay against various cancer cells (gastric cancer-AGS, uterine cervical cancer-HeLa, and liver cancer-HepG2) were remarkable, since the synthesized glucoside compounds showed more than 60% of cell growth inhibition at concentrations ranging from ~50 μM to 100 μM. Importantly, one of the synthesized glucoside derivatives, alizarin 2-O-glucoside inhibited more than 90% of cell growth in all the cancer cell lines tested.
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Abu N, Zamberi NR, Yeap SK, Nordin N, Mohamad NE, Romli MF, Rasol NE, Subramani T, Ismail NH, Alitheen NB. Subchronic toxicity, immunoregulation and anti-breast tumor effect of Nordamnacantal, an anthraquinone extracted from the stems of Morinda citrifolia L. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:31. [PMID: 29374471 PMCID: PMC5787285 DOI: 10.1186/s12906-018-2102-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 01/17/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND Morinda citrifolia L. that was reported with immunomodulating and cytotoxic effects has been traditionally used to treat multiple illnesses including cancer. An anthraquinone derived from fruits of Morinda citrifolia L., nordamnacanthal, is a promising agent possessing several in vitro biological activities. However, the in vivo anti-tumor effects and the safety profile of nordamnacanthal are yet to be evaluated. METHODS In vitro cytotoxicity of nordamnacanthal was tested using MTT, cell cycle and Annexin V/PI assays on human MCF-7 and MDA-MB231 breast cancer cells. Mice were orally fed with nordamnacanthal daily for 28 days for oral subchronic toxicity study. Then, the in vivo anti-tumor effect was evaluated on 4T1 murine cancer cells-challenged mice. Changes of tumor size and immune parameters were evaluated on the untreated and nordamnacanthal treated mice. RESULTS Nordamnacanthal was found to possess cytotoxic effects on MDA-MB231, MCF-7 and 4T1 cells in vitro. Moreover, based on the cell cycle and Annexin V results, nordamnacanthal managed to induce cell death in both MDA-MB231 and MCF-7 cells. Additionally, no mortality, signs of toxicity and changes of serum liver profile were observed in nordamnacanthal treated mice in the subchronic toxicity study. Furthermore, 50 mg/kg body weight of nordamncanthal successfully delayed the progression of 4T1 tumors in Balb/C mice after 28 days of treatment. Treatment with nordamnacanthal was also able to increase tumor immunity as evidenced by the immunophenotyping of the spleen and YAC-1 cytotoxicity assays. CONCLUSION Nordamnacanthal managed to inhibit the growth and induce cell death in MDA-MB231 and MCF-7 cell lines in vitro and cease the tumor progression of 4T1 cells in vivo. Overall, nordamnacanthal holds interesting anti-cancer properties that can be further explored.
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Sukamporn P, Baek SJ, Gritsanapan W, Chirachanchai S, Nualsanit T, Rojanapanthu P. Self-assembled nanomicelles of damnacanthal-loaded amphiphilic modified chitosan: Preparation, characterization and cytotoxicity study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:1068-1077. [DOI: 10.1016/j.msec.2017.03.263] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/23/2017] [Accepted: 03/26/2017] [Indexed: 01/22/2023]
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13
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García-Vilas JA, Pino-Ángeles A, Martínez-Poveda B, Quesada AR, Medina MÁ. The noni anthraquinone damnacanthal is a multi-kinase inhibitor with potent anti-angiogenic effects. Cancer Lett 2016; 385:1-11. [PMID: 27816491 DOI: 10.1016/j.canlet.2016.10.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 10/22/2016] [Accepted: 10/25/2016] [Indexed: 12/29/2022]
Abstract
The natural bioactive compound damnacanthal inhibits several tyrosine kinases. Herein, we show that -in fact- damancanthal is a multi kinase inhibitor. A docking and molecular dynamics simulation approach allows getting further insight on the inhibitory effect of damnacanthal on three different kinases: vascular endothelial growth factor receptor-2, c-Met and focal adhesion kinase. Several of the kinases targeted and inhibited by damnacanthal are involved in angiogenesis. Ex vivo and in vivo experiments clearly demonstrate that, indeed, damnacanthal is a very potent inhibitor of angiogenesis. A number of in vitro assays contribute to determine the specific effects of damnacanthal on each of the steps of the angiogenic process, including inhibition of tubulogenesis, endothelial cell proliferation, survival, migration and production of extracellular matrix remodeling enzyme. Taken altogether, these results suggest that damancanthal could have potential interest for the treatment of cancer and other angiogenesis-dependent diseases.
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Affiliation(s)
- Javier A García-Vilas
- Universidad de Málaga, Andalucía Tech, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, E-29071 Málaga, Spain; IBIMA (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain
| | | | - Beatriz Martínez-Poveda
- Universidad de Málaga, Andalucía Tech, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, E-29071 Málaga, Spain; IBIMA (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain
| | - Ana R Quesada
- Universidad de Málaga, Andalucía Tech, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, E-29071 Málaga, Spain; IBIMA (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain; CIBER de Enfermedades Raras (CIBERER), E-29071 Málaga, Spain
| | - Miguel Ángel Medina
- Universidad de Málaga, Andalucía Tech, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, E-29071 Málaga, Spain; IBIMA (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain; CIBER de Enfermedades Raras (CIBERER), E-29071 Málaga, Spain.
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14
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Lopes EDO, Oliveira CGD, Silva PBD, Eismann CE, Suárez CA, Menegário AA, Leite CQF, Deflon VM, Pavan FR. Novel Zinc(II) Complexes [Zn(atc-Et)₂] and [Zn(atc-Ph)₂]: In Vitro and in Vivo Antiproliferative Studies. Int J Mol Sci 2016; 17:E781. [PMID: 27213368 PMCID: PMC4881598 DOI: 10.3390/ijms17050781] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/02/2016] [Accepted: 05/06/2016] [Indexed: 01/11/2023] Open
Abstract
Cisplatin and its derivatives are the main metallodrugs used in cancer therapy. However, low selectivity, toxicity and drug resistance are associated with their use. The zinc(II) (Zn(II)) thiosemicarbazone complexes [Zn(atc-Et)₂] (1) and [Zn(atc-Ph)₂] (2) (atc-R: monovalent anion of 2-acetylpyridine N4-R-thiosemicarbazone) were synthesized and fully characterized in the solid state and in solution via elemental analysis, Fourier transform infrared (FTIR), ultraviolet-visible (UV-Vis) and proton nuclear magnetic resonance (¹H NMR) spectroscopy, conductometry and single-crystal X-ray diffraction. The cytotoxicity of these complexes was evaluated in the HepG2, HeLa, MDA-MB-231, K-562, DU 145 and MRC-5 cancer cell lines. The strongest antiproliferative results were observed in MDA-MB-231 and HepG2 cells, in which these complexes displayed significant selective toxicity (3.1 and 3.6, respectively) compared with their effects on normal MRC-5 cells. In vivo studies were performed using an alternative model (Artemia salina L.) to assure the safety of these complexes, and the results were confirmed using a conventional model (BALB/c mice). Finally, tests of oral bioavailability showed maximum plasma concentrations of 3029.50 µg/L and 1191.95 µg/L for complexes 1 and 2, respectively. According to all obtained results, both compounds could be considered as prospective antiproliferative agents that warrant further research.
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Affiliation(s)
- Erica de O Lopes
- Faculdade de Ciencias Farmaceuticas, UNESP-Univ Estadual Paulista, Campus Araraquara, Araraquara, São Paulo 14800-903, Brazil.
| | - Carolina G de Oliveira
- Instituto de Química de São Carlos, USP-Univ de São Paulo, São Carlos, São Paulo 13560-970, Brazil.
| | - Patricia B da Silva
- Faculdade de Ciencias Farmaceuticas, UNESP-Univ Estadual Paulista, Campus Araraquara, Araraquara, São Paulo 14800-903, Brazil.
| | - Carlos E Eismann
- Centro de Estudos Ambientais, UNESP-Univ Estadual Paulista, Campus Rio Claro, Rio Claro, São Paulo 13506-900, Brazil.
| | - Carlos A Suárez
- Centro de Estudos Ambientais, UNESP-Univ Estadual Paulista, Campus Rio Claro, Rio Claro, São Paulo 13506-900, Brazil.
| | - Amauri A Menegário
- Centro de Estudos Ambientais, UNESP-Univ Estadual Paulista, Campus Rio Claro, Rio Claro, São Paulo 13506-900, Brazil.
| | - Clarice Q F Leite
- Faculdade de Ciencias Farmaceuticas, UNESP-Univ Estadual Paulista, Campus Araraquara, Araraquara, São Paulo 14800-903, Brazil.
| | - Victor M Deflon
- Instituto de Química de São Carlos, USP-Univ de São Paulo, São Carlos, São Paulo 13560-970, Brazil.
| | - Fernando R Pavan
- Faculdade de Ciencias Farmaceuticas, UNESP-Univ Estadual Paulista, Campus Araraquara, Araraquara, São Paulo 14800-903, Brazil.
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15
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Lajkó E, Bányai P, Zámbó Z, Kursinszki L, Szőke É, Kőhidai L. Targeted tumor therapy by Rubia tinctorum L.: analytical characterization of hydroxyanthraquinones and investigation of their selective cytotoxic, adhesion and migration modulator effects on melanoma cell lines (A2058 and HT168-M1). Cancer Cell Int 2015; 15:119. [PMID: 26690297 PMCID: PMC4683936 DOI: 10.1186/s12935-015-0271-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 12/07/2015] [Indexed: 11/12/2022] Open
Abstract
Background Alizarin and purpurin are di- and trihydroxyanthraquinones derived from Rubia tinctorum L. Previous pharmacological studies have demonstrated that they exhibit certain degree of selective inhibitory effects towards cancer cells suggesting their application as a targeted drug for cancer. Our present work was aimed to investigate the suitability of hydroxyanthraquinones of Rubia tinctorum L. for targeted tumor therapy. The effects of alizarin, purpurin and an aqueous extract from transformed hairy root culture of Rubia tinctorum L. were examined on (1) cell proliferation, (2) apoptosis, (3) cell adhesion/morphology and (4) migration (chemotaxis, chemokinesis) of human melanoma cell lines (A2058, HT168-M1) and human fibroblast cells (MRC-5), as well as (5) the aqueous extract was analytically characterized. Methods The aqueous extract was prepared from R. tinctorum hairy root culture and qualitatively analyzed by HPLC and ESI–MS methods. The cell growth inhibitory activity of anthraquinones was evaluated by MTT-assay and by flow cytometry. The effect of anthraquinones on cell adhesion was measured by an impedance based technique, the xCELLigence SP. For the chemotaxis assay NeuroProbe® chamber was used. Computer based holographic microscopy was applied to analyze chemokinetic responses as well as morphometry. Statistical significance was determined by the one-way ANOVA test. Results In the aqueous extract, munjistin (Mr = 284, tR = 18.4 min) as a principal component and three minor anthraquinones (pseudopurpurin, rubiadin and nordamnacanthal) were identified. The purpurin elicited a stronger but not apoptosis-mediated antitumor effect in melanoma cells (A2058: 10−6–10−5 M: 90.6–64.1 %) than in normal fibroblasts (10−6–10−5 M: 97.6–84.8 %). The aqueous extract in equimolar concentrations showed the most potent cytotoxicity after 72 h incubation (A2058: 10−6–10−5 M: 87.4–55.0 %). All tested substances elicited chemorepellent effect in melanoma cells, while in MRC-5 fibroblasts, only the alizarin exhibited such a repellent character. Indices of chemokinesis measured by holographic microscopy (migration, migration directness, motility and motility speed) were significantly enhanced by alizarin and purpurin as well, while morphometric changes were weak in the two melanoma cell lines. Conclusions Our results highlight the effective and selective inhibitory activity of purpurin towards melanoma cells and its possible use as a targeted anticancer agent. The anthraquinones of the cytotoxic extract are suggested to apply in drug delivery systems as an anticancer drug. Electronic supplementary material The online version of this article (doi:10.1186/s12935-015-0271-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Eszter Lajkó
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, Budapest, 1089 Hungary
| | - Péter Bányai
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest, 1085 Hungary
| | - Zsófia Zámbó
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, Budapest, 1089 Hungary
| | - László Kursinszki
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest, 1085 Hungary
| | - Éva Szőke
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, Budapest, 1085 Hungary
| | - László Kőhidai
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, Budapest, 1089 Hungary
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16
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Yeap S, Akhtar MN, Lim KL, Abu N, Ho WY, Zareen S, Roohani K, Ky H, Tan SW, Lajis N, Alitheen NB. Synthesis of an anthraquinone derivative (DHAQC) and its effect on induction of G2/M arrest and apoptosis in breast cancer MCF-7 cell line. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:983-92. [PMID: 25733816 PMCID: PMC4338775 DOI: 10.2147/dddt.s65468] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Anthraquinones are an important class of naturally occurring biologically active compounds. In this study, anthraquinone derivative 1,3-dihydroxy-9,10-anthraquinone-2- carboxylic acid (DHAQC) (2) was synthesized with 32% yield through the Friedel–Crafts condensation reaction. The mechanisms of cytotoxicity of DHAQC (2) in human breast cancer MCF-7 cells were further investigated. Results from the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay showed that DHAQC (2) exhibited potential cytotoxicity and selectivity in the MCF-7 cell line, comparable with the naturally occurring anthraquinone damnacanthal. DHAQC (2) showed a slightly higher IC50 (inhibitory concentration with 50% cell viability) value in the MCF-7 cell line compared to damnacanthal, but it is more selective in terms of the ratio of IC50 on MCF-7 cells and normal MCF-10A cells. (selective index for DHAQC (2) was 2.3 and 1.7 for damnacanthal). The flow cytometry cell cycle analysis on the MCF-7 cell line treated with the IC50 dose of DHAQC (2) for 48 hours showed that DHAQC (2) arrested MCF-7 cell line at the G2/M phase in association with an inhibited expression of PLK1 genes. Western blot analysis also indicated that the DHAQC (2) increased BAX, p53, and cytochrome c levels in MCF-7 cells, which subsequently activated apoptosis as observed in annexin V/propidium iodide and cell cycle analyses. These results indicate that DHAQC (2) is a synthetic, cytotoxic, and selective anthraquinone, which is less toxic than the natural product damnacanthal, and which demonstrates potential in the induction of apoptosis in the breast cancer MCF-7 cell line.
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Affiliation(s)
- SweeKeong Yeap
- Institute of Bioscience, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia
| | - Muhammad Nadeem Akhtar
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Kian Lam Lim
- Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Selangor Darul Ehsan, Malaysia
| | - Nadiah Abu
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia ; Bright Sparks Unit, University of Malaya, Kuala Lumpur, Malaysia
| | - Wan Yong Ho
- School of Biomedical Sciences, University of Nottingham Malaysia Campus, Selangor Darul Ehsan, Malaysia
| | - Seema Zareen
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Kuantan, Pahang, Malaysia
| | - Kiarash Roohani
- Institute of Bioscience, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia
| | - Huynh Ky
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia
| | - Sheau Wei Tan
- Institute of Bioscience, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia
| | - Nordin Lajis
- Scientific Chairs Unit, Taibah University, Medina, Saudi Arabia
| | - Noorjahan Banu Alitheen
- Institute of Bioscience, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia ; Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia
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17
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Ghodke PP, Harikrishna S, Pradeepkumar PI. Synthesis and Polymerase-Mediated Bypass Studies of the N2-Deoxyguanosine DNA Damage Caused by a Lucidin Analogue. J Org Chem 2015; 80:2128-38. [DOI: 10.1021/jo502627b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Pratibha P. Ghodke
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - S. Harikrishna
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - P. I. Pradeepkumar
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
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18
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García-Vilas JA, Quesada AR, Medina MA. Damnacanthal, a noni anthraquinone, inhibits c-Met and is a potent antitumor compound against Hep G2 human hepatocellular carcinoma cells. Sci Rep 2015; 5:8021. [PMID: 25620570 PMCID: PMC4306130 DOI: 10.1038/srep08021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 12/29/2014] [Indexed: 12/17/2022] Open
Abstract
Damnacanthal, an anthraquinone present in noni plants, targets several tyrosine kinases and has antitumoral effects. This study aims at getting additional insight on the potential of damnacanthal as a natural antitumor compound. The direct effect of damnacanthal on c-Met was tested by in vitro activity assays. Additionally, Western blots of c-Met phosphorylation in human hepatocellular carcinoma Hep G2 cells were performed. The antitumor effects of damnacanthal were tested by using cell growth, soft agar clonogenic, migration and invasion assays. Their mechanisms were studied by Western blot, and cell cycle, apoptosis and zymographic assays. Results show that damnacanthal targets c-Met both in vitro and in cell culture. On the other hand, damnacanthal also decreases the phosphorylation levels of Akt and targets matrix metalloproteinase-2 secretion in Hep G2 cells. These molecular effects are accompanied by inhibition of the growth and clonogenic potential of Hep G2 hepatocellular carcinoma cells, as well as induction of Hep G2 apoptosis. Since c-Met has been identified as a new potential therapeutical target for personalized treatment of hepatocellular carcinoma, damnacanthal and noni extract supplements containing it could be potentially interesting for the treatment and/or chemoprevention of hepatocellular carcinoma through its inhibitory effects on the HGF/c-Met axis.
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Affiliation(s)
- Javier A García-Vilas
- Universidad de Málaga, Andalucía Tech, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, and IBIMA (Biomedical Research Institute of Málaga)
| | - Ana R Quesada
- 1] Universidad de Málaga, Andalucía Tech, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, and IBIMA (Biomedical Research Institute of Málaga) [2] CIBER de Enfermedades Raras (CIBERER), E-29071 Málaga, Spain
| | - Miguel A Medina
- 1] Universidad de Málaga, Andalucía Tech, Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, and IBIMA (Biomedical Research Institute of Málaga) [2] CIBER de Enfermedades Raras (CIBERER), E-29071 Málaga, Spain
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