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Sonam Dongsar T, Tsering Dongsar T, Gupta G, Alsayari A, Wahab S, Kesharwani P. PLGA nanomedical consignation: A novel approach for the management of prostate cancer. Int J Pharm 2024; 652:123808. [PMID: 38224758 DOI: 10.1016/j.ijpharm.2024.123808] [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: 10/20/2023] [Revised: 12/27/2023] [Accepted: 01/12/2024] [Indexed: 01/17/2024]
Abstract
The malignancy of the prostate is a complicated ailment which impacts millions of male populations around the globe. Despite the multitude of endeavour accomplished within this domain, modalities that are involved in the ameliorative management of predisposed infirmity are still relent upon non-specific and invasive procedures, thus imposing a detrimental mark on the living standard of the individual. Also, the orchestrated therapeutic interventions are still incompetent in substantiating a robust and unabridged therapeutic end point owing to their inadequate solubility, low bioavailability, limited cell assimilation, and swift deterioration, thereby muffling the clinical application of these existing treatment modalities. Nanotechnology has been employed in an array of modalities for the medical management of malignancies. Among the assortment of available nano-scaffolds, nanocarriers composed of a bio-decomposable and hybrid polymeric material like PLGA hold an opportunity to advance as standard chemotherapeutic modalities. PLGA-based nanocarriers have the prospect to address the drawbacks associated with conventional cancer interventions, owing to their versatility, durability, nontoxic nature, and their ability to facilitate prolonged drug release. This review intends to describe the plethora of evidence-based studies performed to validate the applicability of PLGA nanosystem in the amelioration of prostate malignancies, in conjunction with PLGA focused nano-scaffold in the clinical management of prostate carcinoma. This review seeks to explore numerous evidence-based studies confirming the applicability of PLGA nanosystems in ameliorating prostate malignancies. It also delves into the role of PLGA-focused nano-scaffolds in the clinical management of prostate carcinoma, aiming to provide a comprehensive perspective on these advancements.
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Affiliation(s)
- Tenzin Sonam Dongsar
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Tenzin Tsering Dongsar
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Garima Gupta
- Graphic Era Hill University, Dehradun, 248002, India; School of Allied Medical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Abdulrhman Alsayari
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia
| | - Shadma Wahab
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India.
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2
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Gan X, Nie M, Cai S, Liu Y, Zhang F, Feng X, Li Y, Yang B, Wang X. Dankasterone A induces prostate cancer cell death by inducing oxidative stress. Eur J Pharmacol 2023; 957:175988. [PMID: 37597647 DOI: 10.1016/j.ejphar.2023.175988] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/22/2023] [Accepted: 08/10/2023] [Indexed: 08/21/2023]
Abstract
Oxidative stress plays a dual role in tumor survival, either promoting tumor development or killing tumor cells under different conditions. Dankasterone A is a secondary metabolite derived from the fungus Talaromyces purpurogenu. It showed good potential in a screen for anti-prostate cancer compounds. In this study, MTT results showed dankasterone A was cytotoxic to prostate cancer cells, with an IC50 of 5.10 μM for PC-3 cells and 3.41 μM for 22Rv1 cells. Further studies, plate cloning assays and real-time cell analysis monitoring showed that dankasterone A significantly inhibited clonal colony formation and cell migration in 22Rv1 and PC-3 cells. In addition, flow cytometry results showed that dankasterone A induced apoptosis in prostate cancer cells while having no impact on cell cycle distribution. At the molecular level, Protein microarray experiments and western blot assays revealed that dankasterone A specifically and dramatically upregulated HO-1 protein expression; and the results of cell fluorescence staining showed that dankasterone A induced overexpression of reactive oxygen species in 22Rv1 and PC-3 cells. Taken together, dankasterone A induced prostate cancer cells to undergo intense oxidative stress, which resulted in the production of large amounts of HO-1 and the release of large amounts of reactive oxygen species, leading to apoptosis of prostate cancer cells, ultimately resulting in the inhibition of both cell proliferation and migration. We also validated the anti-prostate cancer effects of dankasterone A in vivo in a zebrafish xenograft tumor model. In conclusion, dankasterone A has the potential to be developed as an anti-prostate cancer drug.
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Affiliation(s)
- Xia Gan
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology, Guangxi University of Chinese Medicine, Nanning 530200, China; Guangxi Key Laboratory of Marine Drugs, Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Mingyi Nie
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology, Guangxi University of Chinese Medicine, Nanning 530200, China; Guangxi Key Laboratory of Marine Drugs, Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Siying Cai
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Yonghong Liu
- Guangxi Key Laboratory of Marine Drugs, Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Fan Zhang
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Xiaotao Feng
- Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Yunqiu Li
- School of Pharmacy, Guilin Medical University, Guilin 541001, China.
| | - Bin Yang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Xueni Wang
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology, Guangxi University of Chinese Medicine, Nanning 530200, China; Guangxi Key Laboratory of Marine Drugs, Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China.
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3
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Vijayan S, Loganathan C, Sakayanathan P, Thayumanavan P. In silico and in vitro investigation of anticancer effect of newly synthesized nonivamide-s-allyl cysteine ester. J Biomol Struct Dyn 2022; 40:11511-11525. [PMID: 34344261 DOI: 10.1080/07391102.2021.1959404] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Nonivamide (NOV), less pungent analogue of capsaicin present in various Capsicum species is known for various biological properties. S-allyl cysteine (SAC) abundantly present in aged garlic extract is gaining importance for anticancer property. NOV was esterified with SAC to increase the biological activity. In silico ADME analysis revealed the drug-likeness of NOV-SAC. Molecular docking and dynamics simulation analysis were done to understand the interaction of NOV-SAC with therapeutic target proteins (human estrogen receptor α, tumo protein negative regulator mouse double minute 2, B-cell lymphoma 2 and cyclin-dependent kinase 2) to treat cancer. NOV-SAC interacted with these proteins stably with favorable binding energy which was calculated through MMGBSA method. In line with in silico results, NOV-SAC showed antiproliferative activity against breast cancer cell line (MCF-7). NOV-SAC treatment increased ROS generation, decreased the antioxidant level, arrested cells at G1/S phase, disrupted mitochondrial membrane potential and initiated DNA fragmentation. The expression of p53 is increased by NOV-SAC treatment, in concordance the ratio of Bcl-2/Bax was decreased. Altogether, NOV-SAC was synthesized for the first time and it induced apoptosis in MCF-7 cells through triggering ROS generation and increasing the expression of p53. The in silico results has been mirrored in in vitro analysis of NOV-SAC against cancer cell line.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sudha Vijayan
- Department of Biochemistry, Periyar University, Salem, Tamil Nadu, India
| | - Chitra Loganathan
- Department of Biochemistry, Periyar University, Salem, Tamil Nadu, India
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4
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Vijayan S, Loganathan C, Sakayanathan P, Thayumanavan P. Synthesis and Characterization of Plumbagin S-Allyl Cysteine Ester: Determination of Anticancer Activity In Silico and In Vitro. Appl Biochem Biotechnol 2022; 194:5827-5847. [PMID: 35819687 DOI: 10.1007/s12010-022-04079-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 07/05/2022] [Indexed: 11/29/2022]
Abstract
In recent years, derivatives of natural compounds are synthesized to increase the bioavailability, pharmacology, and pharmacokinetics properties. The naphthoquinone, plumbagin (PLU), is well known for its anticancer activity. However, the clinical use of PLU is hindered due to its toxicity. Previous reports have shown that modification of PLU at 5'-hydroxyl group has reduced its toxicity towards normal cell line. In accordance, in the present study, 5'-hydroxyl group of PLU was esterified with S-allyl cysteine (SAC) to obtain PLU-SAC ester. The drug-likeness of PLU-SAC was understood by in silico ADME analysis. PLU-SAC was characterized by UV-visible spectroscopy, mass spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy. Molecular docking and dynamics simulation analysis revealed the interaction of PLU-SAC with proteins of interest in cancer therapy such as human estrogen receptor α, tumor protein p53 negative regulator mouse double minute 2, and cyclin-dependent kinase 2. MMGBSA calculation showed the favorable binding energy which in turn demonstrated the stable binding of PLU-SAC with these proteins. PLU-SAC showed apoptosis in breast cancer cell line (MCF-7) by inducing oxidative stress, disturbing mitochondrial function, arresting cells at G1 phase of cell cycle, and initiating DNA fragmentation. However, PLU-SAC did not show toxicity towards normal Vero cell line. PLU-SAC was synthesized and structurally characterized, and its anticancer activity was determined by in silico and in vitro analysis.
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Affiliation(s)
- Sudha Vijayan
- Department of Biochemistry, Periyar University, Salem, Tamil Nadu, 636011, India
| | - Chitra Loganathan
- Department of Biochemistry, Periyar University, Salem, Tamil Nadu, 636011, India.,Research and Development Center, Bioinnov Solutions LLP, Salem, Tamil Nadu, 636002, India
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Wang Y, Sun X, Wang Y. Synthesis of pH-responsive covalent organic frameworks nanocarrier for plumbagin delivery. RSC Adv 2022; 12:16046-16050. [PMID: 35733662 PMCID: PMC9136960 DOI: 10.1039/d2ra03127b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 05/21/2022] [Indexed: 11/21/2022] Open
Abstract
Covalent organic frameworks have attracted increasing attention in the fields of nanotechnology and nanoscience. However, the biomedical applications of COFs still remain less explored. Here, a new type of nanoscale covalent organic framework (COF-366) composite was prepared by a facile solvothermal method. The obtained material was characterized by powder X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The results showed that the COF-366 nanocarriers possess uniform spherical morphology with a diameter of 150 nm, which make them favourable for drug delivery. After the plumbagin encapsulation, an effective pH responsive release, high adsorption capacity, and good biocompatibility were achieved. These characteristics make nanoscale COF-366 an ideal material for drug delivery and reveal its promising application in biomedical applications.
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Affiliation(s)
- Yang Wang
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325024 China .,School of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
| | - Xin Sun
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences Wenzhou 325024 China
| | - Yi Wang
- School of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
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6
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Managing GSH elevation and hypoxia to overcome resistance of cancer therapies using functionalized nanocarriers. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.103022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Nelson VK, Pullaiah CP, Saleem Ts M, Roychoudhury S, Chinnappan S, Vishnusai B, Ram Mani R, Birudala G, Bottu KS. Natural Products as the Modulators of Oxidative Stress: An Herbal Approach in the Management of Prostate Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1391:161-179. [PMID: 36472822 DOI: 10.1007/978-3-031-12966-7_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Prostate cancer is the most commonly diagnosed and frequently occurred cancer in the males globally. The current treatment strategies available to treat prostate cancer are not much effective and express various adverse effects. Hence, there is an urgent need to identify novel treatment that can improve patient outcome. From times immemorial, natural products are highly recognized for novel drug development for various diseases including cancer. Cancer cells generally maintain higher basal levels of reactive oxygen species (ROS) when compared to normal cells due to its high metabolic rate. However, initiation of excess intracellular ROS production can not be tolerated by the cancer cells and induce several cell death signals which are in contrast to normal cells. Therefore, small molecules of natural origin that induce ROS can potentially kill cancer cells in specific and provide a better opportunity to develop a novel drug therapy. In this review, we elaborated various classes of medicinal compounds and their mechanism of killing prostate cancer cells through direct or indirect ROS generation. This can generate a novel thought to develop promising drug candidate to treat prostate cancer patients.
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Affiliation(s)
- Vinod K Nelson
- Department of Pharmaceutical Chemistry, Raghavendra Institute of Pharmaceutical Education and Research (Autonomous), Anantapuramu, Andhra Pradesh, India.
| | - Chitikela P Pullaiah
- Department of Pharmacology, Siddha Central Research Institute, Central Council for Research in Siddha, Ministry of AYUSH, Chennai, Tamil Nadu, India
| | - Mohammed Saleem Ts
- College of Pharmacy, Riyadh ELM University, Riyadh, Kingdom of Saudi Arabia, Riyadh
| | | | - Sasikala Chinnappan
- Faculty of Pharmaceutical Sciences, UCSI University, Cheras, Kuala Lumpur, Malaysia
| | - Beere Vishnusai
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Bihar, India
| | - Ravishankar Ram Mani
- Faculty of Pharmaceutical Sciences, UCSI University, Cheras, Kuala Lumpur, Malaysia
| | - Geetha Birudala
- Faculty of Pharmacy, Dr. M.G.R. Educational and Research Institute, Chennai, India
| | - Kavya Sree Bottu
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Bihar, India
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8
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Wang Y, Li Q, Deng M, Chen K, Wang J. Self-assembled metal-organic frameworks nanocrystals synthesis and application for plumbagin drug delivery in acute lung injury therapy. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.06.080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Prostate Apoptotic Induction and NFκB Suppression by Dammarolic Acid: Mechanistic Insight into Onco-Therapeutic Action of an Aglycone Asiaticoside. Curr Issues Mol Biol 2021; 43:932-940. [PMID: 34449548 PMCID: PMC8928952 DOI: 10.3390/cimb43020066] [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: 07/24/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 12/19/2022] Open
Abstract
Prostate cancer (PCa) is addressed as the second most common form of onco-threat worldwide and is usually considered as the major cause of mortality in men. Recent times have seen a surge in exploration of plant-derived components for alternative therapeutical interventions against different oncological malignancies. Dammarolic acid or Asiatic acid (AsA) is an aglycone asiaticoside that has been reported for its efficacy in several ailments including cancer. The current study aimed to investigate the anti-proliferative potency of AsA against human prostate cancer PC-3 cells. Purified AsA was diluted and PC-3 cells were exposed to 20, 40, and 80 µM concentration and incubated for 24 h. Post-exposure, PC-3 cells showcased a substantial loss of their viability at 20 µM (p < 0.05), moreover, this reduction in cell viability escalated proportionally with an increase in AsA at concentrations of 40 and 80 µM (p < 0.01; p < 0.001) respectively. AsA-impelled loss of cellular viability was also evident from the acridine orange-stained photomicrographs, which was also used to quantify the viable and apoptotic cells using Image J software. Additionally, quantification of ROS within PC-3 cells also exhibited an increase in DCF-DA-mediated fluorescence intensity post-exposure to AsA in a dose-dependent manner. AsA-induced apoptosis in PC-3 cells was shown to be associated with augmented activity of caspase-3 proportionally to the AsA concentrations. Thus, initially, this exploratory study explicated that AsA treatment leads to anti-proliferative effects in PC-3 cells by enhancing oxidative stress and inciting apoptosis en route to onset of nuclear fragmentation.
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10
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Roy A. Plumbagin: A Potential Anti-cancer Compound. Mini Rev Med Chem 2021; 21:731-737. [PMID: 33200707 DOI: 10.2174/1389557520666201116144421] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 11/22/2022]
Abstract
Cancer is a deadly disease, which has significantly increased in both developed and developing nations. Treatment of cancer utilizing radiotherapy or chemotherapy actuates a few issues which incorporate spewing, sickness, unpalatable reactions, and so forth. In this specific situation, an alternative drug source, which can effectively treat cancer is of prime importance. Products that are obtained from plant sources are utilized for the treatment of various diseases due to their non-harmful nature. Medicinal plants contain different bioactive compounds, which possess an important role in the prevention of different diseases such as cancer. Plumbagin is a bioactive compound, which is mainly present in Plumbaginaceae family and has been explored for its anticancer activity. Plumbagin basically inactivates the Akt/NF-kB, MMP-9 and VEGF pathways that are essential for cancer cell development. Therefore, it is important to review the role of plumbagin in different cancer cells in order to find an alternative drug to overcome this disease. The present review provides a summary of anticancer activity of plumbagin in various cancers and its mode of action.
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Affiliation(s)
- Arpita Roy
- Department of Biotechnology, School of Engineering & Technology, Sharda University, Greater Noida, India
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11
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Sakpakdeejaroen I, Somani S, Laskar P, Mullin M, Dufès C. Regression of Melanoma Following Intravenous Injection of Plumbagin Entrapped in Transferrin-Conjugated, Lipid-Polymer Hybrid Nanoparticles. Int J Nanomedicine 2021; 16:2615-2631. [PMID: 33854311 PMCID: PMC8039437 DOI: 10.2147/ijn.s293480] [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] [Accepted: 03/10/2021] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Plumbagin, a naphthoquinone extracted from the officinal leadwort presenting promising anti-cancer properties, has its therapeutic potential limited by its inability to reach tumors in a specific way at a therapeutic concentration following systemic injection. The purpose of this study is to assess whether a novel tumor-targeted, lipid-polymer hybrid nanoparticle formulation of plumbagin would suppress the growth of B16-F10 melanoma in vitro and in vivo. METHODS Novel lipid-polymer hybrid nanoparticles entrapping plumbagin and conjugated with transferrin, whose receptors are present in abundance on many cancer cells, have been developed. Their cellular uptake, anti-proliferative and apoptosis efficacy were assessed on various cancer cell lines in vitro. Their therapeutic efficacy was evaluated in vivo after tail vein injection to mice bearing B16-F10 melanoma tumors. RESULTS The transferrin-bearing lipid-polymer hybrid nanoparticles loaded with plumbagin resulted in the disappearance of 40% of B16-F10 tumors and regression of 10% of the tumors following intravenous administration. They were well tolerated by the mice. CONCLUSION These therapeutic effects, therefore, make transferrin-bearing lipid-polymer hybrid nanoparticles entrapping plumbagin a highly promising anti-cancer nanomedicine.
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Affiliation(s)
- Intouch Sakpakdeejaroen
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
| | - Sukrut Somani
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
| | - Partha Laskar
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
| | - Margaret Mullin
- College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Christine Dufès
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
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12
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Cohen L, Livney YD, Assaraf YG. Targeted nanomedicine modalities for prostate cancer treatment. Drug Resist Updat 2021; 56:100762. [PMID: 33857756 DOI: 10.1016/j.drup.2021.100762] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 12/17/2022]
Abstract
Prostate cancer (PC) is the second most common cause of death amongst men in the USA. Therapy of PC has been transformed in the past decade by introducing novel therapeutics, advanced functional imaging and diagnostic approaches, next generation sequencing, as well as improved application of existing therapies in localized PC. Treatment of PC at the different stages of the disease may include surgery, androgen deprivation therapy (ADT), chemotherapy and radiation therapy. However, although ADT has proven efficacious in PC treatment, its effectiveness may be temporary, as these tumors frequently develop molecular mechanisms of therapy resistance, which allow them to survive and proliferate even under conditions of testosterone deprivation, inhibition of androgen receptor signaling, or cytotoxic drug treatment. Importantly, ADT was found to induce key alterations which frequently result in the formation of metastatic tumors displaying a therapy refractory phenotype. Hence, to overcome these serious therapeutic impediments, novel PC cell-targeted therapeutic strategies are being developed. These include diverse platforms enabling specific enhanced antitumor drug uptake and increased intracellular accumulation. Studies have shown that these novel treatment modalities lead to enhanced antitumor activity and diminished systemic toxicity due to the use of selective targeting and decreased drug doses. The underlying mechanism of targeting and internalization is based upon the interaction between a selective ligand, conjugated to a drug-loaded nanoparticle or directly to an anti-cancer drug, and a specific plasma membrane biomarker, uniquely overexpressed on the surface of PC cells. Another targeted therapeutic approach is the delivery of unique anti-oncogenic signaling pathway-based therapeutic drugs, which are selectively cytotoxic to PC cells. The current paper reviews PC targeted modalities reported in the past 6 years, and discusses both the advantages and limitations of the various targeted treatment strategies.
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Affiliation(s)
- Lital Cohen
- The Laboratory of Biopolymers for Food and Health, Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Yoav D Livney
- The Laboratory of Biopolymers for Food and Health, Department of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
| | - Yehuda G Assaraf
- The Fred Wyszkowski Cancer Research Laboratory, Department of Biology, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
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13
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Piesche M, Roos J, Kühn B, Fettel J, Hellmuth N, Brat C, Maucher IV, Awad O, Matrone C, Comerma Steffensen SG, Manolikakes G, Heinicke U, Zacharowski KD, Steinhilber D, Maier TJ. The Emerging Therapeutic Potential of Nitro Fatty Acids and Other Michael Acceptor-Containing Drugs for the Treatment of Inflammation and Cancer. Front Pharmacol 2020; 11:1297. [PMID: 33013366 PMCID: PMC7495092 DOI: 10.3389/fphar.2020.01297] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 08/05/2020] [Indexed: 12/13/2022] Open
Abstract
Nitro fatty acids (NFAs) are endogenously generated lipid mediators deriving from reactions of unsaturated electrophilic fatty acids with reactive nitrogen species. Furthermore, Mediterranean diets can be a source of NFA. These highly electrophilic fatty acids can undergo Michael addition reaction with cysteine residues, leading to post-translational modifications (PTM) of selected regulatory proteins. Such modifications are capable of changing target protein function during cell signaling or in biosynthetic pathways. NFA target proteins include the peroxisome proliferator-activated receptor γ (PPAR-γ), the pro-inflammatory and tumorigenic nuclear factor-κB (NF-κB) signaling pathway, the pro-inflammatory 5-lipoxygenases (5-LO) biosynthesis pathway as well as soluble epoxide hydrolase (sEH), which is essentially involved in the regulation of vascular tone. In several animal models of inflammation and cancer, the therapeutic efficacy of well-tolerated NFA has been demonstrated. This has already led to clinical phase II studies investigating possible therapeutic effects of NFA in subjects with pulmonary arterial hypertension. Albeit Michael acceptors feature a broad spectrum of bioactivity, they have for a rather long time been avoided as drug candidates owing to their presumed unselective reactivity and toxicity. However, targeted covalent modification of regulatory proteins by Michael acceptors became recognized as a promising approach to drug discovery with the recent FDA approvals of the cancer therapeutics, afatanib (2013), ibrutinib (2013), and osimertinib (2015). Furthermore, the Michael acceptor, neratinib, a dual inhibitor of the human epidermal growth factor receptor 2 and epidermal growth factor receptor, was recently approved by the FDA (2017) and by the EMA (2018) for the treatment of breast cancer. Finally, a number of further Michael acceptor drug candidates are currently under clinical investigation for pharmacotherapy of inflammation and cancer. In this review, we focus on the pharmacology of NFA and other Michael acceptor drugs, summarizing their potential as an emerging class of future antiphlogistics and adjuvant in tumor therapeutics.
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Affiliation(s)
- Matthias Piesche
- Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, Talca, Chile.,Oncology Center, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Jessica Roos
- Department of Safety of Medicinal Products and Medical Devices, Paul-Ehrlich-Institut (Federal Institute for Vaccines and Biomedicines), Langen, Germany.,Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
| | - Benjamin Kühn
- Institute of Pharmaceutical Chemistry, Goethe-University, Frankfurt am Main, Germany
| | - Jasmin Fettel
- Institute of Pharmaceutical Chemistry, Goethe-University, Frankfurt am Main, Germany
| | - Nadine Hellmuth
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
| | - Camilla Brat
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
| | - Isabelle V Maucher
- Institute of Pharmaceutical Chemistry, Goethe-University, Frankfurt am Main, Germany
| | - Omar Awad
- Department of Safety of Medicinal Products and Medical Devices, Paul-Ehrlich-Institut (Federal Institute for Vaccines and Biomedicines), Langen, Germany
| | - Carmela Matrone
- Division of Pharmacology, Department of Neuroscience, School of Medicine, University of Naples Federico II, Naples, Italy
| | - Simon Gabriel Comerma Steffensen
- Department of Biomedicine, Medicine Faculty, Aarhus University, Aarhus, Denmark.,Animal Physiology, Department of Biomedical Sciences, Veterinary Faculty, Central University of Venezuela, Maracay, Venezuela
| | - Georg Manolikakes
- Department of Organic Chemistry, Technical University Kaiserslautern, Kaiserslautern, Germany
| | - Ulrike Heinicke
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
| | - Kai D Zacharowski
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
| | - Dieter Steinhilber
- Institute of Pharmaceutical Chemistry, Goethe-University, Frankfurt am Main, Germany
| | - Thorsten J Maier
- Department of Safety of Medicinal Products and Medical Devices, Paul-Ehrlich-Institut (Federal Institute for Vaccines and Biomedicines), Langen, Germany.,Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
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14
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Plumbagin promotes mitochondrial mediated apoptosis in gefitinib sensitive and resistant A549 lung cancer cell line through enhancing reactive oxygen species generation. Mol Biol Rep 2020; 47:4155-4168. [DOI: 10.1007/s11033-020-05464-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/25/2020] [Indexed: 01/06/2023]
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15
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Pandey K, Tripathi SK, Panda M, Biswal BK. Prooxidative activity of plumbagin induces apoptosis in human pancreatic ductal adenocarcinoma cells via intrinsic apoptotic pathway. Toxicol In Vitro 2020; 65:104788. [PMID: 32027944 DOI: 10.1016/j.tiv.2020.104788] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/20/2020] [Accepted: 02/02/2020] [Indexed: 01/19/2023]
Abstract
Prognosis of pancreatic cancer patients remains extremely poor thus, the need for the development of new therapeutic options is crucial. Plumbagin, a naphthoquinone derivative from Plumbago indica has been found to possess various pharmacological properties including anticancer activity. The present study was designed to investigate the inhibitory potential of plumbagin and associated mechanisms in pancreatic cancer cells. Fluorescence and flow cytometric analysis exhibited an increased percentage of apoptotic cells in both monolayer culture and 3D tumor spheroids. Upon plumbagin treatment, reactive oxygen species content of the cancer cells escalated and prompted alleviation of the mitochondrial membrane potential, which triggers caspase-dependent apoptosis. Interestingly, N-acetylcysteine inhibited the plumbagin induced apoptosis. We also found that the expression of Bcl-2 protein decreased and the expression of Bax protein increased. Moreover, plumbagin treatment led to upregulation of cleaved caspase-3 and caspase-9. These results support the views that plumbagin induced stress signals by damaging mitochondria and induce ROS mediated apoptosis via intrinsic apoptotic signaling in pancreatic cancer cells. To summarize, our study suggests that plumbagin may be utilized as a future anti-cancer therapy agent against pancreatic cancer, which is a major threat owing to its stubborn intransigence towards current treatment regimens.
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Affiliation(s)
- Kamal Pandey
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology Rourkela, Odisha 769008, India
| | - Surya Kant Tripathi
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology Rourkela, Odisha 769008, India
| | - Munmun Panda
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology Rourkela, Odisha 769008, India
| | - Bijesh K Biswal
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology Rourkela, Odisha 769008, India.
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16
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Sakunrangsit N, Ketchart W. Plumbagin inhibited AKT signaling pathway in HER-2 overexpressed-endocrine resistant breast cancer cells. Eur J Pharmacol 2019; 868:172878. [PMID: 31863768 DOI: 10.1016/j.ejphar.2019.172878] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 12/11/2019] [Accepted: 12/17/2019] [Indexed: 01/10/2023]
Abstract
The important mechanism of endocrine resistance is the crosstalk between estrogen receptor (ER) and HER2 signaling pathways. Aside from ER downregulation, there was an increase in HER2 expression and increased activation of the downstream AKT/ERK pathways in endocrine-resistant cells (MCF-7/LCC2 and MCF-7/LCC9) which is similar to HER2-overexpressed (SKBR3) cells. However, nuclear receptor coactivator 3 (NCOA3), the important ER-coactivator, that upregulated in endocrine-resistant cells did not express in HER2-overexpressed (SKBR3) cells. NCOA3 was able to activate AKT/ERK signalling pathway. Our previous study reported that plumbagin (PLB), a naphthoquinone compound, had a potent cytotoxic activity against endocrine-resistant cells. This study aimed to further investigate the mechanism of anti-cancer effects of PLB on ER and HER-2 signaling. PLB can inhibit estradiol (E2)-induced cell proliferation in MCF-7 wild-type cells but had no effect in the resistant cells. It also inhibited HER2 expression in both endocrine-resistant and HER-2 overexpressed cells. Therefore, the mechanism of PLB may be regulated through HER-2 signaling. PLB inhibited the phosphorylation of AKT (pAKT) and pERK1/2 and induced apoptosis and reduced the expression of anti-apoptotic genes Bcl-2 and pro-caspase 3 and Cleaved Caspase 3 protein in both endocrine-resistant and HER-2 overexpressed cells. However, the inhibitory effect of PLB was more obvious when pre-treated the cells with AKT inhibitor only in HER-2 overexpressed cells. In addition, the inhibitory effect of PLB on pAKT was attenuated when NCOA3 was downregulated. Our finding suggested that the inhibitory effect of PLB on AKT signaling pathways regulated through NCOA3 in HER2-overexpressed endocrine-resistant cells.
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Affiliation(s)
- Nithidol Sakunrangsit
- Overcoming Cancer Drug Resistance Research Unit, Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Wannarasmi Ketchart
- Overcoming Cancer Drug Resistance Research Unit, Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
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17
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Wihadmadyatami H, Karnati S, Hening P, Tjahjono Y, Rizal, Maharjanti F, Kusindarta DL, Triyono T, Supriatno. Ethanolic extract Ocimum sanctum Linn. induces an apoptosis in human lung adenocarcinoma (A549) cells. Heliyon 2019; 5:e02772. [PMID: 31844708 PMCID: PMC6895684 DOI: 10.1016/j.heliyon.2019.e02772] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 08/13/2019] [Accepted: 10/29/2019] [Indexed: 12/29/2022] Open
Abstract
Ocimum sanctum (OS) is tropical herbal plant which is easy to find and widely used as a vegetable food in Indonesia. In last decade, lung adenocarcinoma was in top position as male cancer disease in Indonesia. Recently, emerging data showing the extracts of different species of Ocimum exhibiting the anti-tumor properties. Further studies on lung lewis carcinoma demonstrated pro-apoptosis effects after the treatment with Ocimum extracts. However, the effect of OS of Indonesian origin in human alveolar pulmonary adenocarcinoma A549 cells remain unclear. Therefore, we aimed to investigate effects of ethanolic extract OS (EEOS) in A549 cell culture systems. Cell adhesion and viability assays revealed that EEOS significantly decreased the attachment into extracellular matrix of A549 cells. Morphological examination AO/EB and DAPI staining indicated that EEOS induced the cells shrinkage, DNA fragmentation and condensation of A549 cells. Further, EEOS treatment induced the apoptosis rate followed by up-regulation of reactive oxygen species (ROS), caspase-3 expression and decreased anti-apoptotic protein Bcl-2. This condition also suppressed the expression of SOD2 as well as the GPx. In conclusion, our findings indicate that EEOS suppressed the viability of A549 cells, which may result from the activation of ROS promoting the apoptosis signaling via mitochondrial intrinsic pathway. Taken together, EEOS might be a good therapeutic potential to further understand its properties in the treatment of lung carcinoma.
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Affiliation(s)
- Hevi Wihadmadyatami
- Department of Anatomy, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia, 55281
| | - Srikanth Karnati
- Department of Anatomy and Cell Biology, Julius Maxilimilian University Wurzburg, Germany
| | - Puspa Hening
- Integrated Laboratory for Research and Testing, Universitas Gadjah Mada, Yogyakarta, Indonesia, 55281
| | - Yudy Tjahjono
- Faculty of Pharmacy, Widya Mandala Catholic University, Surabaya, Indonesia, 60265
| | - Rizal
- Biomolecular and Biomedical Research Center, Aretha Medika Utama, Bandung, Indonesia
| | - Fitriana Maharjanti
- Integrated Laboratory for Research and Testing, Universitas Gadjah Mada, Yogyakarta, Indonesia, 55281
| | - Dwi Liliek Kusindarta
- Department of Anatomy, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia, 55281
| | - Teguh Triyono
- Department of Clinical Pathology, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia, 55281
| | - Supriatno
- Department of Oral Medicine, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia, 55281
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18
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Comparison of the Effect of Native 1,4-Naphthoquinones Plumbagin, Menadione, and Lawsone on Viability, Redox Status, and Mitochondrial Functions of C6 Glioblastoma Cells. Nutrients 2019; 11:nu11061294. [PMID: 31181639 PMCID: PMC6628372 DOI: 10.3390/nu11061294] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/29/2019] [Accepted: 06/05/2019] [Indexed: 12/17/2022] Open
Abstract
Background: 1,4-naphthoquinones, especially juglone, are known for their anticancer activity. However, plumbagin, lawsone, and menadione have been less investigated for these properties. Therefore, we aimed to determine the effects of plumbagin, lawsone, and menadione on C6 glioblastoma cell viability, ROS production, and mitochondrial function. Methods: Cell viability was assessed spectrophotometrically using metabolic activity method, and by fluorescent Hoechst/propidium iodide nuclear staining. ROS generation was measured fluorometrically using DCFH-DA. Oxygen uptake rates were recorded by the high-resolution respirometer Oxygraph-2k. Results: Plumbagin and menadione displayed highly cytotoxic activity on C6 cells (IC50 is 7.7 ± 0.28 μM and 9.6 ± 0.75 μM, respectively) and caused cell death by necrosis. Additionally, they increased the amount of intracellular ROS in a concentration-dependent manner. Moreover, even at very small concentrations (1–3 µM), these compounds significantly uncoupled mitochondrial oxidation from phosphorylation impairing energy production in cells. Lawsone had significantly lower viability decreasing and mitochondria-uncoupling effect, and exerted strong antioxidant activity. Conclusions: Plumbagin and menadione exhibit strong prooxidant, mitochondrial oxidative phosphorylation uncoupling and cytotoxic activity. In contrast, lawsone demonstrates a moderate effect on C6 cell viability and mitochondrial functions, and possesses strong antioxidant properties.
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McIntyre J, Sobolewska A, Fedorowicz M, McLenigan MP, Macias M, Woodgate R, Sledziewska-Gojska E. DNA polymerase ι is acetylated in response to S N2 alkylating agents. Sci Rep 2019; 9:4789. [PMID: 30886224 PMCID: PMC6423139 DOI: 10.1038/s41598-019-41249-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 03/04/2019] [Indexed: 02/07/2023] Open
Abstract
DNA polymerase iota (Polι) belongs to the Y-family of DNA polymerases that are involved in DNA damage tolerance through their role in translesion DNA synthesis. Like all other Y-family polymerases, Polι interacts with proliferating cell nuclear antigen (PCNA), Rev1, ubiquitin and ubiquitinated-PCNA and is also ubiquitinated itself. Here, we report that Polι also interacts with the p300 acetyltransferase and is acetylated. The primary acetylation site is K550, located in the Rev1-interacting region. However, K550 amino acid substitutions have no effect on Polι's ability to interact with Rev1. Interestingly, we find that acetylation of Polι significantly and specifically increases in response to SN2 alkylating agents and to a lower extent to SN1 alkylating and oxidative agents. As we have not observed acetylation of Polι's closest paralogue, DNA polymerase eta (Polη), with which Polι shares many functional similarities, we believe that this modification might exclusively regulate yet to be determined, and separate function(s) of Polι.
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Affiliation(s)
- Justyna McIntyre
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawinskiego 5a, 02-106, Warsaw, Poland.
| | - Aleksandra Sobolewska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawinskiego 5a, 02-106, Warsaw, Poland
| | - Mikolaj Fedorowicz
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawinskiego 5a, 02-106, Warsaw, Poland
| | - Mary P McLenigan
- Laboratory of Genomic Integrity, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20892-3371, USA
| | - Matylda Macias
- Laboratory of Molecular and Cellular Neurobiology, International Institute of Molecular and Cell Biology, ul. Ks. Trojdena 4, 02-109, Warsaw, Poland
| | - Roger Woodgate
- Laboratory of Genomic Integrity, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20892-3371, USA
| | - Ewa Sledziewska-Gojska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawinskiego 5a, 02-106, Warsaw, Poland
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20
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Tripathi SK, Panda M, Biswal BK. Emerging role of plumbagin: Cytotoxic potential and pharmaceutical relevance towards cancer therapy. Food Chem Toxicol 2019; 125:566-582. [PMID: 30685472 DOI: 10.1016/j.fct.2019.01.018] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/04/2019] [Accepted: 01/20/2019] [Indexed: 12/24/2022]
Abstract
Plumbagin is a naphthoquinone derived yellow crystalline phytochemical. Plumbagin has a wide range of biological effects including cytotoxicity against cancer cells both in vitro and in vivo. Due to the pleiotropic nature of plumbagin, it shows the anticancer effect by targeting several molecular mechanisms including apoptosis and autophagic pathways, cell cycle arrest, anti-angiogenic pathways, anti-invasion and anti-metastasis pathways. Among many signaling pathways the key regulatory genes regulated by plumbagin are NF-kβ, STAT3, and AKT, etc. Plumbagin is also a potent inducer of ROS, suppressor of cellular glutathione, and causes DNA strand break by oxidative DNA base damages. In vivo studies suggested that plumbagin significantly reduces the tumor weight and volume in dose-dependent manner without any side effects in tested model organisms. Another exciting aspect of plumbagin is the ability to re-sensitize the chemo and radioresistant cancer cells when used in combination or alone. Nano encapsulation of plumbagin overcomes the poor water solubility and bioavailability obstacles, enhancing the pharmaceutical relevance with better therapeutic efficacy. Moreover, plumbagin can be introduced as a future phytotherapeutic anticancer drug after fully satisfied preclinical and clinical trials.
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Affiliation(s)
- Surya Kant Tripathi
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology Rourkela, 769008, Sundergarh, Odisha, India
| | - Munmun Panda
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology Rourkela, 769008, Sundergarh, Odisha, India
| | - Bijesh K Biswal
- Cancer Drug Resistance Laboratory, Department of Life Science, National Institute of Technology Rourkela, 769008, Sundergarh, Odisha, India.
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21
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Plumbagin inhibits the proliferation of nasopharyngeal carcinoma 6-10B cells by upregulation of reactive oxygen species. Anticancer Drugs 2018; 29:890-897. [PMID: 30119131 DOI: 10.1097/cad.0000000000000665] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Plumbagin (PLB) is the primary component of the traditional Chinese medicine Baihua Dan, and possesses anti-infection and anticancer effects, with the ability to enhance the sensitivity of tumor cells to radiation therapy. However, the anticancer effect of PLB on nasopharyngeal carcinoma and the underlying mechanisms remain unclear. In this study, we investigated the anticancer effects of PLB on nasopharyngeal carcinoma 6-10B cells and clarified its molecular mechanisms in vitro. The results showed that PLB was effective against 6-10B cells proliferation in a dose-dependent manner by inducing G2/M phase cell cycle arrest. Furthermore, our data showed that PLB induced reactive oxygen species accumulation, which inhibited the GSK3β/STAT3 pathway and arrested the G2/M phase. Therefore, our results provided new insight into the mechanism of the antitumor effects of PLB, supporting PLB as a prospective therapeutic drug in nasopharyngeal carcinoma by modulating intracellular redox balance.
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22
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Vinothkumar R, Ceasar SA, Divyarupa A. Chemosuppressive effect of plumbagin on human non-small lung cancer cell xenotransplanted zebrafish. Indian J Cancer 2018; 54:253-256. [PMID: 29199700 DOI: 10.4103/0019-509x.219580] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Plumbagin (5-hydroxy-2-methyl-1,4-napthoquinone) derived from Plumbago species is a potential anti-tumour agent. Plumbagin has been tested for anti-cancer activity in vitro and in vivo using mice model. AIM To study the tumour suppressing efficacy of plumbagin using zebrafish model. MATERIALS AND METHODS Human Non-small lung cancer cell line were cultured in vitro and transplanted in to zebrafish. The development of tumour was confirmed by performing histology. The tumour was then allowed to progress in vivo and the fishes were administered with plumbagin orally for three continuous days. The tumour suppression capacity was monitored subsequently using transcriptosome analysis. STATISTICAL METHODS The pixel integrated density obtained was converted into relative gene expression using IBM SPSS. RESULTS The administration of plumbagin had an ability to suppress tumour and the size of the tumour were relatively lesser when compared with the control sample; it has also increased p53 gene expression. CONCLUSION The study helps to conclude that plumbagin is an effective anti-tumour agent against human cancer cells based on the study in vivo in zebrafish.
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Affiliation(s)
- R Vinothkumar
- Department of Biotechnology, St. Peter's Engineering College, Avadi, Chennai - 600054, India
| | - S A Ceasar
- Department of Biotechnology, St. Peter's Engineering College, Avadi, Chennai - 600054, India
| | - A Divyarupa
- Department of Biotechnology, St. Peter's Engineering College, Avadi, Chennai - 600054, India
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Ghosh SK, Ganta A, Spanjaard RA. Discovery and cellular stress pathway analysis of 1,4-naphthoquinone derivatives with novel, highly potent broad-spectrum anticancer activity. J Biomed Sci 2018; 25:12. [PMID: 29422060 PMCID: PMC5804083 DOI: 10.1186/s12929-018-0408-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 01/15/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chemotherapy and targeted therapies have made important strides in cancer treatment yet they often fail and new therapies are still needed. Here, we employed a phenotypic screen to identify and analyze the mechanism of action of novel small molecules that interfere with critical pathways involved in tumor cell growth, using chemoresistant A375 melanoma cells as a model. METHODS Cell culture studies were performed in ATCC-recommended media. Compounds, and compound libraries were obtained from Boston University or purchased commercially. Effects on A375 cell viability, proliferation and morphology were determined by Celigo Image Cytometer and viability staining. Anticancer activity of the lead compound was tested in a xenograft nude mouse model. Signaling and cell death pathways were analyzed by SDS-PAGE and immunoblotting, and/or fluorescence microscopy. RESULTS After evaluating 4477 compounds, one hit compound CB533 was identified that caused significant reduction of A375 cell growth. CB533 is an unexplored 1,4-naphthoquinone (NQ) derivative which unlike 1,4-NQ, induced rapid cell death without generating reactive oxygen species (ROS). Structure-activity relationship analysis showed that a pyrrolidine in the 1,4-NQ nucleus in lead compound Pyr-1 yielded optimal activity. CB533 and Pyr-1 had growth-suppressing effects on a large variety of chemotherapy-resistant cancer cell lines in the nano to picomolar range. Pyr-1 also significantly reduced growth of MDA-MB-231 breast cancer cells in nude mice. Pyr-1 rapidly induced activation of major stress pathways and autophagy, which was efficiently blocked by ERK, and somewhat by PI3K inhibitors. CONCLUSION CB533 and lead Pyr-1 represent novel broad-spectrum, anticancer compounds that are up to 1000-fold more potent than plumbagin, a natural 1,4-NQ with known anticancer activity. Since the growth suppression activities of CB533 and Pyr-1 are unaffected by the chemotherapy resistance of cancer cells, these compounds have promising therapeutic potential. The pyrrolidine in the 3 position of the 1,4-NQ nucleus of Pyr-1 is a critical component of the pharmacophore. Pyr-1-induced cellular stress was mediated by an ERK, and to a lesser extent by an AKT-dependent pathway without involving apoptosis. Our data suggest that Pyr-1 derives its greatly enhanced antitumor activity via mimicking ROS-induced stress signaling without generating ROS, and likely committing cells to autophagy.
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Affiliation(s)
- Sajal K Ghosh
- Cancer Center, Departments of Otolaryngology, Dermatology and Biochemistry, Boston University School of Medicine, 80 East Concord Street, Boston, MA, 02118, USA
| | - Abhishek Ganta
- Cancer Center, Departments of Otolaryngology, Dermatology and Biochemistry, Boston University School of Medicine, 80 East Concord Street, Boston, MA, 02118, USA
| | - Remco A Spanjaard
- Cancer Center, Departments of Otolaryngology, Dermatology and Biochemistry, Boston University School of Medicine, 80 East Concord Street, Boston, MA, 02118, USA. .,Q-Ring, Inc, Brookline, MA, 02446, USA.
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Cao YY, Yu J, Liu TT, Yang KX, Yang LY, Chen Q, Shi F, Hao JJ, Cai Y, Wang MR, Lu WH, Zhang Y. Plumbagin inhibits the proliferation and survival of esophageal cancer cells by blocking STAT3-PLK1-AKT signaling. Cell Death Dis 2018; 9:17. [PMID: 29339720 PMCID: PMC5833725 DOI: 10.1038/s41419-017-0068-6] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 12/12/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the deadliest cancers, and it requires novel treatment approaches and effective drugs. In the present study, we found that treatment with plumbagin, a natural compound, reduced proliferation and survival of the KYSE150 and KYSE450 ESCC cell lines in a dose-dependent manner in vitro. The drug also effectively inhibited the viability of primary ESCC cells from fresh biopsy specimens. Furthermore, plumbagin-induced mitotic arrest and massive apoptosis in ESCC cells. Notably, the drug significantly suppressed the colony formation capacity of ESCC cells in vitro and the growth of KYSE150 xenograft tumors in vivo. At the molecular level, we found that exposure to plumbagin decreased both polo-like kinase 1 (PLK1) and phosphorylated protein kinase B (p-AKT) expression in both ESCC cell lines. Enforced PLK1 expression in ESCC cells not only markedly rescued cells from plumbagin-induced apoptosis and proliferation inhibition but also restored the impaired AKT activity. Furthermore, signal transducer and activator of transcription 3 (STAT3), a transcription factor of PLK1, was also inactivated in plumbagin-treated ESCC cells; however, the overexpression of a constitutively activated STAT3 mutant, STAT3C, reinstated the plumbagin-elicited blockade of PLK1-AKT signaling in ESCC cells. Taken together, these findings indicate that plumbagin inhibits proliferation and potentiates apoptosis in human ESCC cells in vitro and in vivo. Plumbagin may exert these antitumor effects by abrogating STAT3-PLK1-AKT signaling, which suggests that plumbagin may be a novel, promising anticancer agent for the treatment of ESCC.
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Affiliation(s)
- Ying-Ya Cao
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
- Department of Intensive Care Medicine, Yijishan Hospital, Wannan Medical College, 241001, Wuhu, China
| | - Jing Yu
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Ting-Ting Liu
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Kai-Xia Yang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Li-Yan Yang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Qun Chen
- Department of Intensive Care Medicine, Yijishan Hospital, Wannan Medical College, 241001, Wuhu, China
| | - Feng Shi
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Jia-Jie Hao
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Yan Cai
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Ming-Rong Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China
| | - Wei-Hua Lu
- Department of Intensive Care Medicine, Yijishan Hospital, Wannan Medical College, 241001, Wuhu, China.
| | - Yu Zhang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China.
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Sznarkowska A, Kostecka A, Meller K, Bielawski KP. Inhibition of cancer antioxidant defense by natural compounds. Oncotarget 2017; 8:15996-16016. [PMID: 27911871 PMCID: PMC5362541 DOI: 10.18632/oncotarget.13723] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 11/22/2016] [Indexed: 12/16/2022] Open
Abstract
All classic, non-surgical anticancer approaches like chemotherapy, radiotherapy or photodynamic therapy kill cancer cells by inducing severe oxidative stress. Even tough chemo- and radiotherapy are still a gold standard in cancer treatment, the identification of non-toxic compounds that enhance their selectivity, would allow for lowering their doses, reduce side effects and risk of second cancers. Many natural products have the ability to sensitize cancer cells to oxidative stress induced by chemo- and radiotherapy by limiting antioxidant capacity of cancer cells. Blocking antioxidant defense in tumors decreases their ability to balance oxidative insult and results in cell death. Though one should bear in mind that the same natural compound often exerts both anti-oxidant and pro-oxidant properties, depending on concentration used, cell type, exposure time and environmental conditions. Here we present a comprehensive overview of natural products that inhibit major antioxidant defense mechanisms in cancer cells and discuss their potential in clinical application.
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Affiliation(s)
- Alicja Sznarkowska
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
| | - Anna Kostecka
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
| | - Katarzyna Meller
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
| | - Krzysztof Piotr Bielawski
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Gdansk, Poland
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Pan M, Li W, Yang J, Li Z, Zhao J, Xiao Y, Xing Y, Zhang X, Ju W. Plumbagin-loaded aptamer-targeted poly D,L-lactic-co-glycolic acid-b-polyethylene glycol nanoparticles for prostate cancer therapy. Medicine (Baltimore) 2017; 96:e7405. [PMID: 28746182 PMCID: PMC5627808 DOI: 10.1097/md.0000000000007405] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Plumbagin inhibits the growth, metastasis, and invasion of prostate cancer (PCa). However, its lower bioavailability limits biopharmaceutical properties due to insolubility in water. Prostate-specific membrane antigen (PSMA) aptamer-targeted nanoparticles (NPs) significantly enhanced cytotoxicity in prostate epithelial cells. This study aimed to investigate the effects of plumbagin-loaded prostate-specific membrane antigen (PSMA) aptamer-targeted poly D,L-lactic-co-glycolic acid-b-polyethylene glycol (PLGA-PEG) nanoparticles (NPs) on prostate cancer (PCa) in vitro.PLGA-PEG with a terminal carboxylic acid group (PLGA-PEG-COOH) was synthesized, and plumbagin was loaded on PLGA-PEG-COOH NPs using the nanoprecipitation method and characterized by field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), and laser light scattering. The uptake and distribution of plumbagin-NPs in human PCa LNCaP cells were investigated by fluorescent labeling. Subsequently, PSMA antibody-targeted PLGA-PEG-COOH NPs (targeted NPs) were prepared by covalent binding and characterized by x-ray photoelectron spectroscopy. Furthermore, the anticancer activity of plumbagin-loaded, targeted NPs was compared with that of nontargeted NPs in LNCaP cells in vitro.Plumbagin-NPs (diameter of 189.4 ± 30.6 nm and zeta potential of -17.1 ± 3.7 mV) were optimized based on theoretical drug loading of 5% and a ratio of water:acetone of 3:1. During the first 2 hours, the cumulative release rate of the drug was 66.4 ± 8.56%. Moreover, plumbagin-targeted NPs with nitrogen atoms were prepared. The uptake rate was 90% at 0.5 hours for targeted and nontargeted NPs. The IC50 of targeted NPs and nontargeted NPs was 32.59 ± 8.03 μM and 39.02 ± 7.64 μM, respectively.Plumbagin-loaded PSMA aptamer-targeted NPs can be used in targeted chemotherapy against PCa.
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Affiliation(s)
- Minjie Pan
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
- Changzhou NO.2 People's Hospital, Changzhou
| | - Weifeng Li
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
- Department of Urology, Wuhan Medical Care Center for Women and Children
| | - Jun Yang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - Zhiqin Li
- Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Zhao
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - Yajun Xiao
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - Yifei Xing
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - Xiaoping Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
| | - Wen Ju
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan
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Mbaveng AT, Kuete V, Efferth T. Potential of Central, Eastern and Western Africa Medicinal Plants for Cancer Therapy: Spotlight on Resistant Cells and Molecular Targets. Front Pharmacol 2017; 8:343. [PMID: 28626426 PMCID: PMC5454075 DOI: 10.3389/fphar.2017.00343] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 05/19/2017] [Indexed: 12/26/2022] Open
Abstract
Cancer remains a major health hurdle worldwide and has moved from the third leading cause of death in the year 1990 to second place after cardiovascular disease since 2013. Chemotherapy is one of the most widely used treatment modes; however, its efficiency is limited due to the resistance of cancer cells to cytotoxic agents. The present overview deals with the potential of the flora of Central, Eastern and Western African (CEWA) regions as resource for anticancer drug discovery. It also reviews the molecular targets of phytochemicals of these plants such as ABC transporters, namely P-glycoprotein (P-gp), multi drug-resistance-related proteins (MRPs), breast cancer resistance protein (BCRP, ABCG2) as well as the epidermal growth factor receptor (EGFR/ErbB-1/HER1), human tumor suppressor protein p53, caspases, mitochondria, angiogenesis, and components of MAP kinase signaling pathways. Plants with the ability to preferentially kills resistant cancer cells were also reported. Data compiled in the present document were retrieved from scientific websites such as PubMed, Scopus, Sciencedirect, Web-of-Science, and Scholar Google. In summary, plant extracts from CEWA and isolated compounds thereof exert cytotoxic effects by several modes of action including caspases activation, alteration of mitochondrial membrane potential (MMP), induction of reactive oxygen species (ROS) in cancer cells and inhibition of angiogenesis. Ten strongest cytotoxic plants from CEWA recorded following in vitro screening assays are: Beilschmiedia acuta Kosterm, Echinops giganteus var. lelyi (C. D. Adams) A. Rich., Erythrina sigmoidea Hua (Fabaceae), Imperata cylindrical Beauv. var. koenigii Durand et Schinz, Nauclea pobeguinii (Pobég. ex Pellegr.) Merr. ex E.M.A., Piper capense L.f., Polyscias fulva (Hiern) Harms., Uapaca togoensis Pax., Vepris soyauxii Engl. and Xylopia aethiopica (Dunal) A. Rich. Prominent antiproliferative compounds include: isoquinoline alkaloid isotetrandrine (51), two benzophenones: guttiferone E (26) and isoxanthochymol (30), the isoflavonoid 6α-hydroxyphaseollidin (9), the naphthyl butenone guieranone A (25), two naphthoquinones: 2-acetylfuro-1,4-naphthoquinone (4) and plumbagin (37) and xanthone V1 (46). However, only few research activities in the African continent focus on cytotoxic drug discovery from botanicals. The present review is expected to stimulate further scientific efforts to better valorize the African flora.
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Affiliation(s)
- Armelle T. Mbaveng
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of MainzMainz, Germany
- Department of Biochemistry, Faculty of Science, University of DschangDschang, Cameroon
| | - Victor Kuete
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of MainzMainz, Germany
- Department of Biochemistry, Faculty of Science, University of DschangDschang, Cameroon
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of MainzMainz, Germany
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Evidence of a DHA Signature in the Lipidome and Metabolome of Human Hepatocytes. Int J Mol Sci 2017; 18:ijms18020359. [PMID: 28208746 PMCID: PMC5343894 DOI: 10.3390/ijms18020359] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/25/2017] [Accepted: 01/26/2017] [Indexed: 12/19/2022] Open
Abstract
Cell supplementation with bioactive molecules often causes a perturbation in the whole intracellular environment. Omics techniques can be applied for the assessment of this perturbation. In this study, the overall effect of docosahexaenoic acid (DHA) supplementation on cultured human hepatocyte lipidome and metabolome has been investigated using nuclear magnetic resonance (NMR) in combination with traditional techniques. The effect of two additional bioactives sharing with DHA the lipid-lowering effect—propionic acid (PRO) and protocatechuic acid (PCA)—has also been evaluated in the context of possible synergism. NMR analysis of the cell lipid extracts showed that DHA supplementation, alone or in combination with PCA or PRO, strongly altered the cell lipid profile. The perfect discrimination between cells receiving DHA (alone or in combination) and the other cells reinforced the idea of a global rearrangement of the lipid environment induced by DHA. Notably, gas chromatography and fluorimetric analyses confirmed the strong discrimination obtained by NMR. The DHA signature was evidenced not only in the cell lipidome, but also in the metabolome. Results reported herein indicate that NMR, combined with other techniques, represents a fundamental approach to studying the effect of bioactive supplementation, particularly in the case of molecules with a broad spectrum of mechanisms of action.
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Michael acceptor containing drugs are a novel class of 5-lipoxygenase inhibitor targeting the surface cysteines C416 and C418. Biochem Pharmacol 2017; 125:55-74. [DOI: 10.1016/j.bcp.2016.11.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/02/2016] [Indexed: 12/22/2022]
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Plumbagin and Its Role in Chronic Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 929:229-246. [PMID: 27771927 DOI: 10.1007/978-3-319-41342-6_10] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Abimannan T, Peroumal D, Parida JR, Barik PK, Padhan P, Devadas S. Oxidative stress modulates the cytokine response of differentiated Th17 and Th1 cells. Free Radic Biol Med 2016; 99:352-363. [PMID: 27567538 DOI: 10.1016/j.freeradbiomed.2016.08.026] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 08/17/2016] [Accepted: 08/23/2016] [Indexed: 12/11/2022]
Abstract
Reactive oxygen species (ROS) signaling is critical in T helper (Th) cell differentiation; however its role in differentiated Th cell functions is unclear. In this study, we investigated the role of oxidative stress on the effector functions of in vitro differentiated mouse Th17 and Th1 cells or CD4+ T cells from patients with Rheumatoid Arthritis using pro-oxidants plumbagin (PB) and hydrogen peroxide. We found that in mouse Th cells, non-toxic concentration of pro-oxidants inhibited reactivation induced expression of IL-17A in Th17 and IFN-γ in Th1 cells by reducing the expression of their respective TFs, RORγt and T-bet. Interestingly, in both the subsets, PB increased the expression of IL-4 by enhancing reactivation induced ERK1/2 phosphorylation. We further investigated the cytokine modulatory effect of PB on CD4+ T cells isolated from PBMCs of patients with Rheumatoid Arthritis, a well-known Th17 and or Th1 mediated disease. In human CD4+ T cells from Rheumatoid Arthritis patients, PB reduced the frequencies of IL-17A+ (Th17), IFN-γ+ (Th1) and IL-17A+/IFN-γ+ (Th17/1) cells and also inhibited the production of pro-inflammatory cytokines TNF-α and IL-6. N-Acetyl Cysteine (NAC) an antioxidant completely reversed PB mediated cytokine modulatory effects in both mouse and human cells indicating a direct role for ROS. Together our data suggest that oxidative microenvironment can alter cytokine response of terminally differentiated cells and thus altering intracellular ROS could be a potential way to target Th17 and Th1 cells in autoimmune disorders.
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Affiliation(s)
- Thiruvaimozhi Abimannan
- Infectious Disease Biology, Institute of Life Sciences, Chandrashekarpur, Bhubaneswar 751023, Odisha, India
| | - Doureradjou Peroumal
- Infectious Disease Biology, Institute of Life Sciences, Chandrashekarpur, Bhubaneswar 751023, Odisha, India
| | - Jyoti R Parida
- Institute of Medical Sciences & SUM Hospital, Kalinga Nagar, Bhubaneswar 751003, Odisha, India
| | - Prakash K Barik
- Infectious Disease Biology, Institute of Life Sciences, Chandrashekarpur, Bhubaneswar 751023, Odisha, India
| | - Prasanta Padhan
- Kalinga Institute of Medical Sciences, Patia, Bhubaneswar 751024, Odisha, India
| | - Satish Devadas
- Infectious Disease Biology, Institute of Life Sciences, Chandrashekarpur, Bhubaneswar 751023, Odisha, India.
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Increased sensitivity of BRCA defective triple negative breast tumors to plumbagin through induction of DNA Double Strand Breaks (DSB). Sci Rep 2016; 6:26631. [PMID: 27220670 PMCID: PMC4879579 DOI: 10.1038/srep26631] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 01/15/2016] [Indexed: 02/06/2023] Open
Abstract
We have earlier shown that Plumbagin (PB) can induce selective cytotoxicity to BRCA1 defective ovarian cancer cells; however, the effect of this molecule in BRCA1 mutated breast cancers has not been analyzed yet. Here, we report that reactive oxygen species (ROS) induced by PB resulted in DNA DSB and activates downstream signaling by ATR/ATM kinases and subsequent apoptosis. PB reduces DNA- dependent protein kinase (DNA-PK) expression and inhibits NHEJ (Non Homologous End Joining) activity in BRCA1 defective breast cancer cells. Also, PB induces apoptosis in two different BRCA1 conditional knock out murine models: MMTV-Cre; BRCA1Co/Co and WAP-Cre; BRCA1Co/Co, at 2 mg/kg body weight, but 32 mg/kg of carboplatin (CN) was needed to induce apoptosis in them. This is the first study where two different tissue specific promoter driven transgenic mice models with BRCA1 exon 11 deletions are used for preclinical drug testing. The apoptosis induced by PB in HR (Homologous Recombination) defective triple negative BRCA1 mutant cell lines and in mouse models occur by inducing ROS mediated DNA DSB. The toxicity profile as compared with CN in transgenic mice provides evidence for PB’s safer disposition as a therapeutic lead in breast cancer drug development.
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Sukkasem N, Chatuphonprasert W, Tatiya-Aphiradee N, Jarukamjorn K. Imbalance of the antioxidative system by plumbagin and Plumbago indica L. extract induces hepatotoxicity in mice. JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2016; 5:137-45. [PMID: 27104034 PMCID: PMC4835988 DOI: 10.5455/jice.20160301094913] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 02/01/2016] [Indexed: 01/01/2023]
Abstract
Background/Aim: Plumbago indica (PI) L. and its active constituent, plumbagin, has been traditionally claimed for several pharmacological activities; however, there is little information regarding their toxicity. The present study aims to examine the effects of plumbagin and PI extract (PI) on hepatic histomorphology and antioxidative system in mice. Materials and Methods: Adult male intelligent character recognition mice were intragastrically administered plumbagin (1, 5, and 15 mg/kg/day) or PI (20, 200, and 1,000 mg/kg/day) consecutively for 14 days. Hepatic histomorphology was examined. Plasma alanine transaminase (ALT) and aspartate transaminase (AST) levels, hepatic lipid peroxidation, superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) activities, and the ratio of reduced to oxidized glutathione (GSH/GSSG) were determined. Results: Plumbagin and PI concentration-dependently induced hepatic injury based on histopathological changes via imbalance of antioxidative system. Plumbagin and PI significantly increased plasma ALT and AST levels, hepatic lipid peroxidation, and GPx activity but significantly decreased hepatic SOD and CAT activities. The GSH/GSSG ratio was significantly reduced by plumbagin. Conclusion: Plumbagin and PI caused hepatotoxic effects in the mice by unbalancing of the redox defense system. Therefore, plumbagin and PI-containing supplements should be used cautiously, especially when consumed in high quantities or for long periods.
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Affiliation(s)
- Nadta Sukkasem
- Research Group for Pharmaceutical Activities of Natural Products using Pharmaceutical Biotechnology, Khon Kaen University
| | - Waranya Chatuphonprasert
- Department of Preclinic, Faculty of Medicine, Mahasarakham University, Mahasarakham 44000 Thailand
| | - Nitima Tatiya-Aphiradee
- Research Group for Pharmaceutical Activities of Natural Products using Pharmaceutical Biotechnology, Khon Kaen University
| | - Kanokwan Jarukamjorn
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002 Thailand
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Somasundaram V, Nadhan R, K Hemalatha S, Kumar Sengodan S, Srinivas P. Nitric oxide and reactive oxygen species: Clues to target oxidative damage repair defective breast cancers. Crit Rev Oncol Hematol 2016; 101:184-92. [PMID: 27017408 DOI: 10.1016/j.critrevonc.2016.03.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 01/19/2016] [Accepted: 03/02/2016] [Indexed: 12/21/2022] Open
Abstract
The identification of various biomolecules in cancer progression and therapy has led to the exploration of the roles of two cardinal players, namely Nitric Oxide (NO) and Reactive Oxygen Species (ROS) in cancer. Both ROS and NO display bimodal fashions of functional activity in a concentration dependent manner, by inducing either pro- or anti- tumorigenic signals. Researchers have identified the potential capability of NO and ROS in therapies owing to their role in eliciting pro-apoptotic signals at higher concentrations and their ability to sensitize cancer cells to one another as well as to other therapeutics. We review the prospects of NO and ROS in cancer progression and therapy, and analyze the role of a combinatorial therapy wherein an NO donor (SNAP) is used to sensitize the oxidative damage repair defective, triple negative breast cancer cells (HCC 1937) to a potent ROS inducer. Preliminary findings support the potential to employ various combinatorial regimes for anti-cancer therapies with regard to exploiting the chemo-sensitization property of NO donors.
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Affiliation(s)
- Veena Somasundaram
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India
| | - Revathy Nadhan
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India
| | - Sreelatha K Hemalatha
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India
| | - Satheesh Kumar Sengodan
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India
| | - Priya Srinivas
- Cancer Research Program 5, Rajiv Gandhi Centre for Biotechnology, Thycaud P O, Poojappura, Thiruvananthapuram 695 014, Kerala, India.
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35
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R.S. R, K.H. S, Somasundaram V, S. SK, Nadhan R, Nair RS, Srinivas P. Plumbagin, a naphthaquinone derivative induces apoptosis in BRCA 1/2 defective castrate resistant prostate cancer cells as well as prostate cancer stem-like cells. Pharmacol Res 2016; 105:134-45. [DOI: 10.1016/j.phrs.2016.01.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 01/11/2016] [Accepted: 01/12/2016] [Indexed: 11/30/2022]
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36
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Appadurai P, Rathinasamy K. Plumbagin-silver nanoparticle formulations enhance the cellular uptake of plumbagin and its antiproliferative activities. IET Nanobiotechnol 2016; 9:264-72. [PMID: 26435279 DOI: 10.1049/iet-nbt.2015.0008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Colloidal silver nanoparticles (AgNPs) have attracted much attention in recent years as diagnostics and new drug delivery system in cancer medicine. To study the effects of plumbagin (PLB), a relatively non-toxic napthaquinone isolated from the roots of Plumbago indica in human cervical cancer cell line and developed a formulation to enhance its cytotoxic activities. Silver nanoparticles were synthesised by chemical reduction method and complexed with PLB. Both the AgNPs and the complex PLB-AgNPs were characterised by dynamic light scattering, high-resolution scanning electron microscopy and transmission electron microscopy. The amount of PLB and PLB-AgNPs internalised was determined by ultra-violet-visible spectrophotometer. Cell inhibition was determined by sulphorhodamine B assay. Mitotic index was determined by Wright-Giemsa staining. Apoptosis induction was assessed by western blot using cleaved poly adenosine diphosphate-ribose polymerase antibody. The scanning electron microscope analysis indicated an average particle size of 32±8 nm in diameter. Enhanced internalisation of PLB into the HeLa cells was observed in PLB-AgNPs. PLB inhibited proliferation of cells with IC50 value of about 18±0.6 µM and blocked the cells at mitosis in a concentration-dependent manner. PLB also inhibited the post-drug exposure clonogenic survival of cells and induced apoptosis. The antiproliferative, antimitotic and apoptotic activities were also found to be increased when cells were treated with PLB-AgNPs. The authors results support the idea that AgNP could be a promising and effective drug delivery system for enhanced activity of PLB in cancer treatment.
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Affiliation(s)
- Prakash Appadurai
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India
| | - Krishnan Rathinasamy
- School of Biotechnology, National Institute of Technology Calicut, Calicut, Kerala, India.
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Widhalm JR, Rhodes D. Biosynthesis and molecular actions of specialized 1,4-naphthoquinone natural products produced by horticultural plants. HORTICULTURE RESEARCH 2016; 3:16046. [PMID: 27688890 PMCID: PMC5030760 DOI: 10.1038/hortres.2016.46] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 08/23/2016] [Indexed: 05/20/2023]
Abstract
The 1,4-naphthoquinones (1,4-NQs) are a diverse group of natural products found in every kingdom of life. Plants, including many horticultural species, collectively synthesize hundreds of specialized 1,4-NQs with ecological roles in plant-plant (allelopathy), plant-insect and plant-microbe interactions. Numerous horticultural plants producing 1,4-NQs have also served as sources of traditional medicines for hundreds of years. As a result, horticultural species have been at the forefront of many basic studies conducted to understand the metabolism and function of specialized plant 1,4-NQs. Several 1,4-NQ natural products derived from horticultural plants have also emerged as promising scaffolds for developing new drugs. In this review, the current understanding of the core metabolic pathways leading to plant 1,4-NQs is provided with additional emphasis on downstream natural products originating from horticultural species. An overview on the biochemical mechanisms of action, both from an ecological and pharmacological perspective, of 1,4-NQs derived from horticultural plants is also provided. In addition, future directions for improving basic knowledge about plant 1,4-NQ metabolism are discussed.
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Affiliation(s)
- Joshua R Widhalm
- Department of Horticulture and Landscape Architecture, Purdue University, 625 Agriculture Mall Drive, West Lafayette, IN 47907-2010, USA
- ()
| | - David Rhodes
- Department of Horticulture and Landscape Architecture, Purdue University, 625 Agriculture Mall Drive, West Lafayette, IN 47907-2010, USA
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Pawar A, Patel R, Arulmozhi S, Bothiraja C. d-α-Tocopheryl polyethylene glycol 1000 succinate conjugated folic acid nanomicelles: towards enhanced bioavailability, stability, safety, prolonged drug release and synergized anticancer effect of plumbagin. RSC Adv 2016. [DOI: 10.1039/c6ra12714b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Plumbagin (PLB) loadedd-α-tocopheryl polyethylene glycol 1000 succinate (TPGS) with folic acid (FOL) conjugated nanomicelles achieved controlled and targeted delivery with synergized anticancer potency and reduced PLB toxicity.
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Affiliation(s)
- Atmaram Pawar
- Department of Pharmaceutics
- Bharati Vidyapeeth Deemed University
- Poona College of Pharmacy
- Pune-411038
- India
| | - Rabiya Patel
- Department of Pharmaceutics
- Bharati Vidyapeeth Deemed University
- Poona College of Pharmacy
- Pune-411038
- India
| | - S. Arulmozhi
- Department of Pharmacology
- Bharati Vidyapeeth Deemed University
- Poona College of Pharmacy
- Pune-411038
- India
| | - C. Bothiraja
- Department of Pharmaceutics
- Bharati Vidyapeeth Deemed University
- Poona College of Pharmacy
- Pune-411038
- India
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Balvan J, Gumulec J, Raudenska M, Krizova A, Stepka P, Babula P, Kizek R, Adam V, Masarik M. Oxidative Stress Resistance in Metastatic Prostate Cancer: Renewal by Self-Eating. PLoS One 2015; 10:e0145016. [PMID: 26671576 PMCID: PMC4679176 DOI: 10.1371/journal.pone.0145016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 11/25/2015] [Indexed: 12/15/2022] Open
Abstract
Resistant cancer phenotype is a key obstacle in the successful therapy of prostate cancer. The primary aim of our study was to explore resistance mechanisms in the advanced type of prostate cancer cells (PC-3) and to clarify the role of autophagy in these processes. We performed time-lapse experiment (48 hours) with ROS generating plumbagin by using multimodal holographic microscope. Furthermore, we also performed the flow-cytometric analysis and the qRT-PCR gene expression analysis at 12 selected time points. TEM and confocal microscopy were used to verify the results. We found out that autophagy (namely mitophagy) is an important resistance mechanism. The major ROS producing mitochondria were coated by an autophagic membrane derived from endoplasmic reticulum and degraded. According to our results, increasing ROS resistance may be also accompanied by increased average cell size and polyploidization, which seems to be key resistance mechanism when connected with an escape from senescence. Many different types of cell-cell interactions were recorded including entosis, vesicular transfer, eating of dead or dying cells, and engulfment and cannibalism of living cells. Entosis was disclosed as a possible mechanism of polyploidization and enabled the long-term survival of cancer cells. Significantly reduced cell motility was found after the plumbagin treatment. We also found an extensive induction of pluripotency genes expression (NANOG, SOX2, and POU5F1) at the time-point of 20 hours. We suppose, that overexpression of pluripotency genes in the portion of prostate tumour cell population exposed to ROS leads to higher developmental plasticity and capability to faster respond to changes in the extracellular environment that could ultimately lead to an alteration of cell fate.
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Affiliation(s)
- Jan Balvan
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
| | - Jaromir Gumulec
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
| | - Martina Raudenska
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
| | - Aneta Krizova
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
- TESCAN Brno, s.r.o., Brno, Czech Republic
| | - Petr Stepka
- Department of Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
| | - Petr Babula
- Department of Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
| | - Rene Kizek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
- Department of Chemistry and Biochemistry, Mendel University in Brno / Zemedelska 1, CZ-613 00, Brno, Czech Republic
| | - Vojtech Adam
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00, Brno, Czech Republic
- Department of Chemistry and Biochemistry, Mendel University in Brno / Zemedelska 1, CZ-613 00, Brno, Czech Republic
| | - Michal Masarik
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University / Kamenice 5, CZ-625 00, Brno, Czech Republic
- * E-mail:
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Hwang GH, Ryu JM, Jeon YJ, Choi J, Han HJ, Lee YM, Lee S, Bae JS, Jung JW, Chang W, Kim LK, Jee JG, Lee MY. The role of thioredoxin reductase and glutathione reductase in plumbagin-induced, reactive oxygen species-mediated apoptosis in cancer cell lines. Eur J Pharmacol 2015; 765:384-93. [PMID: 26341012 DOI: 10.1016/j.ejphar.2015.08.058] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/24/2015] [Accepted: 08/31/2015] [Indexed: 12/11/2022]
Abstract
Plumbagin is a secondary metabolite that was first identified in the Plumbago genus of plants. It is a naphthoquinone compound with anti-atherosclerosis, anticancer, anti-inflammatory, antimicrobial, contraceptive, cardiotonic, immunosuppressive, and neuroprotective activities. However, the mechanisms of plumbagin's activities are largely unknown. In this study, we examined the effect of plumbagin on HepG2 hepatocellular carcinoma cells as well as LLC lung cancer cells, SiHa cervical carcinoma cells. Plumbagin significantly decreased HepG2 cell viability in a dose-dependent manner. Additionally, treatment with plumbagin significantly increased the Bax/Bcl-2 ratio and caspase-3/7 activity. Using the similarity ensemble approach (SEA)-a state-of-the-art cheminformatic technique-we identified two previously unknown cellular targets of plumbagin: thioredoxin reductase (TrxR) and glutathione reductase (GR). This was then confirmed using protein- and cell-based assays. We found that plumbagin was directly reduced by TrxR, and that this reduction was inhibited by the TrxR inhibitor, sodium aurothiomalate (ATM). Plumbagin also decreased the activity of GR. Plumbagin, and the GR inhibitor sodium arsenite all increased intracellular reactive oxygen species (ROS) levels and this increase was significantly attenuated by pretreatment with the ROS scavenger N-acetyl-cysteine (NAC) in HepG2 cells. Plumbagin increased TrxR-1 and heme oxygenase (HO)-1 expression and pretreatment with NAC significantly attenuated the plumbagin-induced increase of TrxR-1 and HO-1 expression in HepG2 cells, LLC cells and SiHa cells. Pretreatment with NAC significantly prevented the plumbagin-induced decrease in cell viability in these cell types. In conclusion, plumbagin exerted its anticancer effect by directly interacting with TrxR and GR, and thus increasing intracellular ROS levels.
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Affiliation(s)
- Geun Hye Hwang
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jung Min Ryu
- Department of Veterinary Physiology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Yu Jin Jeon
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Joonhyeok Choi
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Ho Jae Han
- Department of Veterinary Physiology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - You-Mie Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sangkyu Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jong-Sup Bae
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jong-Wha Jung
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan, Republic of Korea
| | - Lark Kyun Kim
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Jun-Goo Jee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Min Young Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea.
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Yurt Kilcar A, Tekin V, Biber Muftuler FZ, Medine EI. 99mTc labeled plumbagin: estrogen receptor dependent examination against breast cancer cells and comparison with PLGA encapsulated form. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4284-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Khaw AK, Sameni S, Venkatesan S, Kalthur G, Hande MP. Plumbagin alters telomere dynamics, induces DNA damage and cell death in human brain tumour cells. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2015; 793:86-95. [PMID: 26520377 DOI: 10.1016/j.mrgentox.2015.06.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 06/08/2015] [Indexed: 02/08/2023]
Abstract
Natural plant products may possess much potential in palliative therapy and supportive strategies of current cancer treatments with lesser cytotoxicity to normal cells compared to conventional chemotherapy. In the current study, anti-cancer properties of plumbagin, a plant-derived naphthoquinone, on brain cancer cells were determined. Plumbagin treatment resulted in the induction of DNA damage, cell cycle arrest and apoptosis, followed by suppression of the colony forming ability of the brain tumour cells. These effects were substantiated by upregulation of PTEN, TNFRSF1A and downregulation of E2F1 genes, along with a drop in MDM2, cyclin B1, survivin and BCL2 protein expression. Plumbagin induced elevated levels of caspase-3/7 activity as well. For the first time, we show here that plumbagin inhibits telomerase in brain tumour cells and results in telomere shortening following chronic long-term treatment. This observation implies considerable cytotoxicity of plumbagin towards cancer cells with higher telomerase activity. Collectively, our findings suggest plumbagin as a potential chemotherapeutic phytochemical in brain tumour treatment modalities.
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Affiliation(s)
- Aik Kia Khaw
- Genome Stability Laboratory, Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Safoura Sameni
- Genome Stability Laboratory, Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Shriram Venkatesan
- Genome Stability Laboratory, Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Guruprasad Kalthur
- Genome Stability Laboratory, Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; Division of Clinical Embryology, Department of Obstetrics and Gynaecology, Kasturba Medical College, Manipal University, Manipal, 576104, India
| | - M Prakash Hande
- Genome Stability Laboratory, Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; Tembusu College, National University of Singapore, Singapore 138597, Singapore.
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Joo MK, Park JJ, Kim SH, Yoo HS, Lee BJ, Chun HJ, Lee SW, Bak YT. Antitumorigenic effect of plumbagin by induction of SH2-containing protein tyrosine phosphatase 1 in human gastric cancer cells. Int J Oncol 2015; 46:2380-8. [PMID: 25815436 DOI: 10.3892/ijo.2015.2935] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 02/17/2015] [Indexed: 01/20/2023] Open
Abstract
A recent study reported that plumbagin downregulated the activity of Janus kinase 2 (JAK2)-signal transducer and activator of transcription 3 (STAT3) pathway to show various antitumor effects in multiple myeloma cells. We aimed in this in vitro study to demonstrate the inhibition of JAK2/STAT3 pathway by plumbagin through inducing SH2-containing protein tyrosine phosphatase 1 (SHP1) expression in the MKN-28 gastric cancer cell line. We performed western blot analysis to measure SHP1, phosphor-JAK2/STAT3 level, and observed that plumbagin induced SHP1 expression and simultaneously downregulated phosphor-JAK2/STAT3 in MKN-28 cells, with negative SHP1 expression. This effect was consistent when JAK2/STAT3 signaling was activated by interleukin-6 (IL-6), and ameliorated when cells were treated with prevanadate, a protein tyrosin phosphatase inhibitor. Furthermore, plumbagin significantly reduced gene expression of cyclin D1, vascular endothelial growth factor (VEGF)-1, Bcl-xL, survivin and matrix metalloproteinase-9 (MMP-9), known target products of STAT3 activation in gastric carcinogenesis by reverse transcription-polymerase chain reaction (RT-PCR). Several functional studies such as water soluble tetrazolium salt-1 (WST-1) assay, wound closure assay, Matrigel invasion assay and Annexin V assay were also performed, and we validated the functional effect of plumbagin for inhibition of cell proliferation, migration and invasion, and induction of apoptosis. Collectively, our findings suggest that plumbagin is a potential regulator of cellular growth, migration, invasion and apoptosis by inhibiting both constitutive and inducible STAT3 activity through induction of SHP1 in gastric cancer cells.
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Affiliation(s)
- Moon Kyung Joo
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul 152‑703, Republic of Korea
| | - Jong-Jae Park
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul 152‑703, Republic of Korea
| | - Sung Ho Kim
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul 152‑703, Republic of Korea
| | - Hyo Soon Yoo
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul 152‑703, Republic of Korea
| | - Beom Jae Lee
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul 152‑703, Republic of Korea
| | - Hoon Jai Chun
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Anam Hospital, Seoul 136‑705, Republic of Korea
| | - Sang Woo Lee
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Ansan Hospital, Ansan, Gyeonggi 425‑707, Republic of Korea
| | - Young-Tae Bak
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul 152‑703, Republic of Korea
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Zhou ZW, Li XX, He ZX, Pan ST, Yang Y, Zhang X, Chow K, Yang T, Qiu JX, Zhou Q, Tan J, Wang D, Zhou SF. Induction of apoptosis and autophagy via sirtuin1- and PI3K/Akt/mTOR-mediated pathways by plumbagin in human prostate cancer cells. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:1511-54. [PMID: 25834399 PMCID: PMC4366042 DOI: 10.2147/dddt.s75976] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Plumbagin (PLB) has been shown to have anticancer activities in animal models, but the role of PLB in prostate cancer treatment is unclear. This study aimed to investigate the effects of PLB on apoptosis and autophagy and the underlying mechanisms in human prostate cancer cell lines PC-3 and DU145. Our study has shown that PLB had potent pro-apoptotic and pro-autophagic effects on PC-3 and DU145 cells. PLB induced mitochondria-mediated apoptosis and autophagy in concentration- and time-dependent manners in both PC-3 and DU145 cells. PLB induced inhibition of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) and p38 mitogen-activated protein kinase (MAPK) pathways and activation of 5′-AMP-dependent kinase (AMPK) as indicated by their altered phosphorylation, contributing to the pro-autophagic activity of PLB. Modulation of autophagy altered basal and PLB-induced apoptosis in both cell lines. Furthermore, PLB downregulated sirtuin 1 (Sirt1), and inhibition of Sirt1 enhanced autophagy, whereas the induction of Sirt1 abolished PLB-induced autophagy in PC-3 and DU145 cells. In addition, PLB downregulated pre-B cell colony-enhancing factor/visfatin, and the inhibition of pre-B cell colony-enhancing factor/visfatin significantly enhanced basal and PLB-induced apoptosis and autophagy in both cell lines. Moreover, reduction of intracellular reactive oxygen species (ROS) level attenuated the apoptosis- and autophagy-inducing effects of PLB on both PC-3 and DU145 cells. These findings indicate that PLB promotes apoptosis and autophagy in prostate cancer cells via Sirt1- and PI3K/Akt/mTOR-mediated pathways with contribution from AMPK-, p38 MAPK-, visfatin-, and ROS-associated pathways.
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Affiliation(s)
- Zhi-Wei Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA ; Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Xing-Xiao Li
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Zhi-Xu He
- Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
| | - Shu-Ting Pan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA ; Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Yinxue Yang
- Department of Colorectal Surgery, General Hospital of Ningxia Medical University, Yinchuan City, Ningxia, People's Republic of China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Kevin Chow
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Tianxin Yang
- Department of Internal Medicine, University of Utah and Salt Lake Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - Jia-Xuan Qiu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Qingyu Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Jun Tan
- Department of Psychiatry and Behavioral Neurosciences, Silver Child Development Center, Rashid Laboratory for Developmental Neurobiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Dong Wang
- Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, People's Republic of China
| | - Shu-Feng Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA ; Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, People's Republic of China
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Gou Y, Zhang Y, Qi J, Kong L, Zhou Z, Liang S, Yang F, Liang H. Binding and Anticancer Properties of Plumbagin with Human Serum Albumin. Chem Biol Drug Des 2015; 86:362-9. [DOI: 10.1111/cbdd.12501] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 10/19/2014] [Accepted: 12/15/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Yi Gou
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
| | - Yao Zhang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
| | - Jinxu Qi
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
| | - Linlin Kong
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
| | - Zuping Zhou
- Key Laboratory of Ecology of Rare an Endangered species and Environmental Protection; Ministry of Education of the People's Republic of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
| | - Shichu Liang
- Key Laboratory of Ecology of Rare an Endangered species and Environmental Protection; Ministry of Education of the People's Republic of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
| | - Feng Yang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
| | - Hong Liang
- Key Laboratory of Ecology of Rare an Endangered species and Environmental Protection; Ministry of Education of the People's Republic of China; Guangxi Normal University; 15 Yucai Road Guilin Guangxi 541004 China
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Qiu JX, Zhou ZW, He ZX, Zhao RJ, Zhang X, Yang L, Zhou SF, Mao ZF. Plumbagin elicits differential proteomic responses mainly involving cell cycle, apoptosis, autophagy, and epithelial-to-mesenchymal transition pathways in human prostate cancer PC-3 and DU145 cells. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:349-417. [PMID: 25609920 PMCID: PMC4294653 DOI: 10.2147/dddt.s71677] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Plumbagin (PLB) has exhibited a potent anticancer effect in preclinical studies, but the molecular interactome remains elusive. This study aimed to compare the quantitative proteomic responses to PLB treatment in human prostate cancer PC-3 and DU145 cells using the approach of stable-isotope labeling by amino acids in cell culture (SILAC). The data were finally validated using Western blot assay. First, the bioinformatic analysis predicted that PLB could interact with 78 proteins that were involved in cell proliferation and apoptosis, immunity, and signal transduction. Our quantitative proteomic study using SILAC revealed that there were at least 1,225 and 267 proteins interacting with PLB and there were 341 and 107 signaling pathways and cellular functions potentially regulated by PLB in PC-3 and DU145 cells, respectively. These proteins and pathways played a critical role in the regulation of cell cycle, apoptosis, autophagy, epithelial to mesenchymal transition (EMT), and reactive oxygen species generation. The proteomic study showed substantial differences in response to PLB treatment between PC-3 and DU145 cells. PLB treatment significantly modulated the expression of critical proteins that regulate cell cycle, apoptosis, and EMT signaling pathways in PC-3 cells but not in DU145 cells. Consistently, our Western blotting analysis validated the bioinformatic and proteomic data and confirmed the modulating effects of PLB on important proteins that regulated cell cycle, apoptosis, autophagy, and EMT in PC-3 and DU145 cells. The data from the Western blot assay could not display significant differences between PC-3 and DU145 cells. These findings indicate that PLB elicits different proteomic responses in PC-3 and DU145 cells involving proteins and pathways that regulate cell cycle, apoptosis, autophagy, reactive oxygen species production, and antioxidation/oxidation homeostasis. This is the first systematic study with integrated computational, proteomic, and functional analyses revealing the networks of signaling pathways and differential proteomic responses to PLB treatment in prostate cancer cells. Quantitative proteomic analysis using SILAC represents an efficient and highly sensitive approach to identify the target networks of anticancer drugs like PLB, and the data may be used to discriminate the molecular and clinical subtypes, and to identify new therapeutic targets and biomarkers, for prostate cancer. Further studies are warranted to explore the potential of quantitative proteomic analysis in the identification of new targets and biomarkers for prostate cancer.
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Affiliation(s)
- Jia-Xuan Qiu
- School of Public Health, Wuhan University, Wuhan, Hubei, People's Republic of China ; Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Zhi-Wei Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA ; Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guiyang Medical University, Guiyang, Guizhou, People's Republic of China
| | - Zhi-Xu He
- Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guiyang Medical University, Guiyang, Guizhou, People's Republic of China
| | - Ruan Jin Zhao
- Center for Traditional Chinese Medicine, Sarasota, FL, USA
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Lun Yang
- Bio-X Institutes, Key Laboratory for the Genetics of Development and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Shu-Feng Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA ; Guizhou Provincial Key Laboratory for Regenerative Medicine, Stem Cell and Tissue Engineering Research Center and Sino-US Joint Laboratory for Medical Sciences, Guiyang Medical University, Guiyang, Guizhou, People's Republic of China
| | - Zong-Fu Mao
- School of Public Health, Wuhan University, Wuhan, Hubei, People's Republic of China
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Anuf AR, Ramachandran R, Krishnasamy R, Gandhi PSS, Periyasamy S. Antiproliferative effects of Plumbago rosea and its purified constituent plumbagin on SK-MEL 28 melanoma cell lines. Pharmacognosy Res 2014; 6:312-9. [PMID: 25276069 PMCID: PMC4166820 DOI: 10.4103/0974-8490.138280] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/20/2014] [Accepted: 08/06/2014] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Plumbago rosea is used in traditional systems of medicine for the preparation of formulations used for treating inflammations, cough, bronchitis, and gastrointestinal disorders, and also in conjunction with cancer chemotherapy. In the present study, the cytotoxic and anti-proliferative effects of plumbagin, and the ethanolic root extract of P. rosea (ETPR) was evaluated on SK-MEL 28 melanoma cell lines and human lymphocytes. MATERIALS AND METHODS MTT and apoptotic assays were used for the evaluation of cytotoxic and anti-proliferative effects, respectively. In addition, the effect of Plumbagin and ETPR in down regulation of BCL-2 expression is investigated using RT-PCR analysis. RESULTS Both plumbagin and ETPR dose-dependently decreased the cell viability more potently in melanoma cell lines. P. rosea extract demonstrated significant synergy in inhibiting BCL-2 expression than plumbagin. Moreover plumbagin showed more toxicity in human lymphocytes. CONCLUSION Plumbagin has anti-cancer potential, but the side effects limits its use; yet plumbagin, in combination with other ingredients in Plumbago rosea extract, displays significant synergy leading to a stronger anticancer effect with significantly less toxicity.
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Affiliation(s)
- Alexander Ronaldo Anuf
- Department of Biotechnology, Kamaraj College of Engineering and Technology, Virudhunagar,Tamil Nadu, India
| | | | - Rajaram Krishnasamy
- Department of Biotechnology, Bharathidasan Institute of Technology Campus, Anna University, Tiruchirappalli, Tamil Nadu, India
| | - P S Sudhakar Gandhi
- Department of Biotechnology, Bharathidasan Institute of Technology Campus, Anna University, Tiruchirappalli, Tamil Nadu, India
| | - Sureshkumar Periyasamy
- Department of Biotechnology, Bharathidasan Institute of Technology Campus, Anna University, Tiruchirappalli, Tamil Nadu, India
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Acetylamine derivative of diospyrin, a plant-derived binaphthylquinonoid, inhibits human colon cancer growth in Nod-Scid mice. Invest New Drugs 2014; 33:22-31. [DOI: 10.1007/s10637-014-0165-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 09/16/2014] [Indexed: 01/15/2023]
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Sagar S, Esau L, Moosa B, Khashab NM, Bajic VB, Kaur M. Cytotoxicity and apoptosis induced by a plumbagin derivative in estrogen positive MCF-7 breast cancer cells. Anticancer Agents Med Chem 2014; 14:170-80. [PMID: 24164046 PMCID: PMC3894702 DOI: 10.2174/18715206113136660369] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Revised: 06/25/2013] [Accepted: 09/06/2013] [Indexed: 01/12/2023]
Abstract
Plumbagin [5-hydroxy- 2-methyl-1, 4-naphthaquinone] is a well-known plant derived anticancer lead compound. Several efforts have been made to synthesize its analogs and derivatives in order to increase its anticancer potential. In the present study, plumbagin and its five derivatives have been evaluated for their antiproliferative potential in one normal and four human cancer cell lines. Treatment with derivatives resulted in dose- and time-dependent inhibition of growth of various cancer cell lines. Prescreening of compounds led us to focus our further investigations on acetyl plumbagin, which showed remarkably low toxicity towards normal BJ cells and HepG2 cells. The mechanisms of apoptosis induction were determined by APOPercentage staining, caspase-3/7 activation, reactive oxygen species production and cell cycle analysis. The modulation of apoptotic genes (p53, Mdm2, NF-kB, Bad, Bax, Bcl-2 and Casp-7) was also measured using real time PCR. The positive staining using APOPercentage dye, increased caspase-3/7 activity, increased ROS production and enhanced mRNA expression of proapoptotic genes suggested that acetyl plumbagin exhibits anticancer effects on MCF-7 cells through its apoptosis-inducing property. A key highlighting point of the study is low toxicity of acetyl plumbagin towards normal BJ cells and negligible hepatotoxicity (data based on HepG2 cell line). Overall results showed that acetyl plumbagin with reduced toxicity might have the potential to be a new lead molecule for testing against estrogen positive breast cancer.
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Affiliation(s)
| | | | | | | | | | - Mandeep Kaur
- Computational Bioscience Research Center (CBRC), Building 2, Level 4, R-4336, King Abdullah University of Science and Technology (KAUST), Thuwal- 23955-6900, Kingdom of Saudi Arabia.
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Eldhose B, Gunawan M, Rahman M, Latha MS, Notario V. Plumbagin reduces human colon cancer cell survival by inducing cell cycle arrest and mitochondria-mediated apoptosis. Int J Oncol 2014; 45:1913-20. [PMID: 25109615 PMCID: PMC4203329 DOI: 10.3892/ijo.2014.2592] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 06/21/2014] [Indexed: 12/14/2022] Open
Abstract
Despite increased use of early detection methods and more aggressive treatment strategies, the worldwide incidence of colorectal cancer is still on the rise. Consequently, it remains urgent to identify novel agents with enhanced efficacy in prevention and/or therapeutic protocols. Our studies focused on the use of Plumbagin, a natural phytochemical that showed promising results against other tumor types, to determine its effectiveness in blocking the proliferation and survival of colon cancer cells in experimental protocols mimicking the environment in primary tumors (attached culture conditions) and in circulating tumor cells (unattached conditions). Under both experimental settings, exposure of HCT116 cells to Plumbagin concentrations in the low micromolar range resulted in cell cycle arrest at the G1 phase, apoptosis via the mitochondrial cell death pathway, and increased production of reactive oxygen species. The cell cycle effects were more noticeable in attached cells, whereas the induction of cell death was more evident in unattached cells. These effects were consistent with the nature and the magnitude of the alterations induced by Plumbagin on the expression levels of a set of proteins known to play key roles in the regulation of cell cycle dynamics, apoptosis mechanisms and cell proliferation. In light of its previously reported lack of toxicity on normal colon cells and the striking anti-survival effect on colon cancer cells observed in our study, Plumbagin should be considered a promising drug for the treatment of colon cancer.
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Affiliation(s)
- Binil Eldhose
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala-686560, India
| | - Mia Gunawan
- Department of Radiation Medicine, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Mahbubur Rahman
- Department of Radiation Medicine, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Mukalel S Latha
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala-686560, India
| | - Vicente Notario
- Department of Radiation Medicine, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
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