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Sanford LM, Keiser P, Fujii N, Woods H, Zhang C, Xu Z, Mahajani NS, Cortés JG, Plescia CB, Knipp G, Stahelin RV, Davey R, Davisson VJ. Evaluation of potency and metabolic stability of diphyllin-derived Vacuolar-ATPase inhibitors. Eur J Med Chem 2024; 275:116537. [PMID: 38875806 DOI: 10.1016/j.ejmech.2024.116537] [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: 04/24/2024] [Revised: 05/16/2024] [Accepted: 05/26/2024] [Indexed: 06/16/2024]
Abstract
Diphyllin is a naturally occurring lignan comprised of an aryl naphthalene lactone scaffold that demonstrates beneficial biological activities in disease models of cancer, obesity, and viral infection. A target of diphyllin and naturally occurring derivatives is the vacuolar ATPase (V-ATPase) complex. Although diphyllin-related natural products are active with in vitro models for viral entry, the potencies and unknown pharmacokinetic properties limit well-designed in vivo evaluations. Previous studies demonstrated that diphyllin derivatives have the utility of blocking the Ebola virus cell entry pathway. However, diphyllin shows limited potency and poor oral bioavailability in mice. An avenue to improve the potency was used in a new library of synthetic derivatives of diphyllin. Diphyllin derivatives exploiting ether linkages at the 4-position with one-to-three carbon spacers to an oxygen or nitrogen atom provided compounds with EC50 values ranging from 7 to 600 nM potency and selectivity up to >500 against Ebola virus in infection assays. These relative potencies are reflected in the Ebola virus infection of primary macrophages, a cell type involved in early pathogenesis. A target engagement study reveals that reducing the ATPV0a2 protein expression enhanced the potency of diphyllin derivatives to block EBOV entry, consistent with effects on the endosomal V-ATPase function. Despite the substantial enhancement of antiviral potencies, limitations were identified, including rapid clearance predicted by in vitro microsome stability assays. However, compounds with similar or improved half-lives relative to diphyllin demonstrated improved pharmacokinetic profiles in vivo. Importantly, these derivatives displayed suitable plasma levels using oral administration, establishing the feasibility of in vivo antiviral testing.
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Affiliation(s)
- Laura M Sanford
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States
| | - Patrick Keiser
- Department of Microbiology, National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA, 02118, United States
| | - Naoaki Fujii
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States
| | - Hannah Woods
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States
| | - Charlie Zhang
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States; Department of Industrial and Molecular Pharmaceutics, Purdue University, West Lafayette, IN, 47907, United States
| | - Zhuangyan Xu
- Department of Industrial and Molecular Pharmaceutics, Purdue University, West Lafayette, IN, 47907, United States
| | - Nivedita S Mahajani
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States
| | - Julián González Cortés
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States
| | - Caroline B Plescia
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States
| | - Gregory Knipp
- Department of Industrial and Molecular Pharmaceutics, Purdue University, West Lafayette, IN, 47907, United States
| | - Robert V Stahelin
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States
| | - Robert Davey
- Department of Microbiology, National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA, 02118, United States
| | - Vincent Jo Davisson
- Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47907, United States.
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Ibrahim SRM, Mohamed SGA, Abdallah HM, Mohamed GA. Ethnomedicinal uses, phytochemistry, and pharmacological relevance of Justicia procumbens (Oriental Water Willow) - A promising traditional plant. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116819. [PMID: 37385576 DOI: 10.1016/j.jep.2023.116819] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/15/2023] [Accepted: 06/18/2023] [Indexed: 07/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Justicia procumbens L. (JP) (Oriental Water Willow, Shrimp plant, Acanthaceae) is a herbaceous plant that is commonly found in India, Taiwan, Australia, Southern China, Vietnam, and Korea. The plant has been primarily used to treat fever, asthma, edema, cough, jaundice, urinary tract infection, and sore throat, as well as for snake bites and as a fish-killer. In the present review, the reported phyto-chemical, ethno-pharmacological, biological, and toxicological studies on J. procumbens were summarized. Special focus had been given to its reported lignans, regarding their isolation, characterization, quantitative estimation, and biosynthesis. MATERIALS AND METHODS A survey of the literature was done using assorted databases and publishers; Scopus, Sci-Finder, Web of Science, PubMed, GoogleScholar, ScienceDirect, Wiley, Taylors&Francis, Bentham, Thieme, and Springer. RESULTS Currently, 95 metabolites have been separated fromJ. procumbens. Lignans and their glycosides were reported as main phyto-constituents of J. procumbens. Various methods are mentioned for quantitative estimation of these lignans. These phyto-constituents possessed wide pharmacological effectiveness, such as antiplatelet aggregation, antimicrobial, antitumor, and antiviral. CONCLUSIONS Many of the stated effects are harmonious with the reported traditional uses of this plant. This data could further support J. procumbens's utilization as a herbal remedy and drug lead. However, further study of J. procumbens toxicity, as well as preclinical and clinical investigation is required to ensure the safe usage of J. procumbens.
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Affiliation(s)
- Sabrin R M Ibrahim
- Department of Chemistry, Preparatory Year Program, Batterjee Medical College, Jeddah, Saudi Arabia; Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
| | - Shaimaa G A Mohamed
- Faculty of Dentistry, British University, El Sherouk City, Suez Desert Road, Cairo, 11837, Egypt
| | - Hossam M Abdallah
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Gamal A Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
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Bak JM, Song M, Shin I, Lim HN. A deconstruction-reconstruction strategy to access 1-naphthol derivatives: application to the synthesis of aristolactam scaffolds. Org Biomol Chem 2023; 21:8936-8941. [PMID: 37916683 DOI: 10.1039/d3ob01603j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
A deconstruction-reconstruction strategy for the synthesis of multisubstituted polycyclic aromatic hydrocarbons (PAHs) is delineated herein. The deconstruction step enables the synthesis of o-cyanomethylaroyl fluorides that are bifunctional substrates holding both a pro-nucleophile and an electrophile. The construction step involves a formal [4 + 2] benzannulation using o-cyanomethylaroyl fluorides and active methylenes. The utility of this synthetic method is also demonstrated by the synthesis of a tetracyclic aristolactam derivative.
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Affiliation(s)
- Jeong Min Bak
- Department of Chemistry, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
| | - Moonyeong Song
- Department of Fine Chemistry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Inji Shin
- Department of Fine Chemistry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Hee Nam Lim
- Department of Chemistry, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
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Waghmare PS, Chinnabattigalla S, Gedu S. One-Pot Dual C-C Bond-Forming Cascade Process via Suzuki Coupling and Intramolecular Cyclocondensation: An Access to Functionalized Naphthalenes. J Org Chem 2023; 88:13392-13403. [PMID: 37722130 DOI: 10.1021/acs.joc.3c01501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Naphthyl ketones encompass a class of essential compounds of biological and industrial significance. The development of synthetic strategies to achieve naphthyl ketones in single-step reactions from readily available materials is highly desirable. Herein, domino one-pot synthesis of functionalized naphthyl ketones via intermolecular Suzuki-Miyaura coupling, followed by intramolecular distal aldol-type condensation with the γ-methyl/methylene groups is reported. The present strategy displayed a comprehensive substrate scope and good functional group tolerance and enabled access to a variety of substituted naphthyl ketones, including aromatic-aliphatic hybrid frameworks of interesting structural features starting from the easily accessible starting materials such as α-iodoenone and 2-formylphenylboronic acids as well as 2-formylphenylboronic acid pinacol esters.
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Affiliation(s)
- Pradip S Waghmare
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
| | | | - Satyanarayana Gedu
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502284, India
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Wang M, Zhou Y, Jian Q, Ai Z, Zhou S. Mechanisms of Rostellularia procumbens (L.) Nees on treating chronic glomerulonephritis explored by network pharmacology, RNA-seq, and in vitro experiments. BMC Complement Med Ther 2023; 23:263. [PMID: 37488573 PMCID: PMC10367255 DOI: 10.1186/s12906-023-04079-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 07/10/2023] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND The purpose of this study was to demonstrate the in vitro anti-nephritis activity of Rostellularia procumbens (L.) Nees (R. procumbens) extract and to make a preliminary investigation of its anti-nephritis mechanism. METHODS A prediction network was built that describes the relationship between R. procumbens and CGN. Then, the potential targets for R. procumbens against CGN were imported into the DAVID database for Gene Ontology (GO) biological annotation analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. A lipopolysaccharide (LPS)-stimulated rat mesangial cell HBZY-1 model in vitro was used to examine the anti-inflammatory activity of R. procumbens extract. RNA-seq was utilized to investigate differentially expressed genes (DEGs) and enriched signaling pathways between groups. Finally, qPCR was used for the validation analysis of the experimental results. RESULTS The results of network pharmacology showed that R. procumbens exerts its therapeutic effect on CGN through the AGE-RAGE signaling pathway in diabetic complications, PI3K-Akt, IL-17 signaling pathway, and so on. R. procumbens n-butanol extract (J-NE) can effectively relieve inflammation in HBZY-1. The results of KEGG pathway enrichment suggest that J-NE attenuated CGN was associated with the IL-17 signaling pathway, and the results of RNA-seq were consistent with network pharmacology. Targets enriched in the IL-17 signaling pathway, including Chemokine (C-C motif) ligand 7 (CCL7), Lipocalin 2 (LCN2), Chemokine (C-C motif) ligand 2 (CCL2), and Chemokine (C-X-C motif) ligand 1 (CXCL1), have been identified as crucial targets attenuating CGN by J-NE. CONCLUSION R. procumbens is a promising pharmacological candidate for the treatment of CGN in the present era.
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Affiliation(s)
- Mengfan Wang
- School of Pharmacy, Hubei University of Chinese Medicine, Huangjiahu Road (West), Hongshan District, Wuhan, Hubei Province, 430065, China
- Key Laboratory of Traditional Chinese Medicine Resources and Chemistry of Hubei Province, Hubei University of Chinese Medicine, Wuhan, 430065, China
- Modern Engineering Research Center of Traditional Chinese Medicine and Ethnic Medicine of Hubei Province, Hubei University of Chinese Medicine, Wuhan, 430065, China
| | - Yi Zhou
- School of Pharmacy, Hubei University of Chinese Medicine, Huangjiahu Road (West), Hongshan District, Wuhan, Hubei Province, 430065, China
| | - Qiuyuan Jian
- School of Pharmacy, Hubei University of Chinese Medicine, Huangjiahu Road (West), Hongshan District, Wuhan, Hubei Province, 430065, China
| | - Zhongzhu Ai
- School of Pharmacy, Hubei University of Chinese Medicine, Huangjiahu Road (West), Hongshan District, Wuhan, Hubei Province, 430065, China.
- Key Laboratory of Traditional Chinese Medicine Resources and Chemistry of Hubei Province, Hubei University of Chinese Medicine, Wuhan, 430065, China.
- Modern Engineering Research Center of Traditional Chinese Medicine and Ethnic Medicine of Hubei Province, Hubei University of Chinese Medicine, Wuhan, 430065, China.
| | - Shanshan Zhou
- The First Clinical Medical School, Hubei University of Chinese Medicine, Huangjiahu Road (West), Hongshan District, Wuhan, Hubei Province, 430065, China.
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Synthesis, Characterization, Crystal Structure, Hirshfeld surface analysis and DFT studies of novel compounds based on the methoxynaphthalene ring. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Clerodane Diterpenoids from an Edible Plant Justicia insularis: Discovery, Cytotoxicity, and Apoptosis Induction in Human Ovarian Cancer Cells. Molecules 2021; 26:molecules26195933. [PMID: 34641476 PMCID: PMC8512812 DOI: 10.3390/molecules26195933] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/25/2021] [Accepted: 09/26/2021] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES The toxicity of chemotherapeutic anticancer drugs is a serious issue in clinics. Drug discovery from edible and medicinal plants represents a promising approach towards finding safer anticancer therapeutics. Justicia insularis T. Anderson (Acanthaceae) is an edible and medicinal plant in Nigeria. This study aims to discover cytotoxic compounds from this rarely explored J. insularis and investigate their underlying mechanism of action. METHODS The cytotoxicity of the plant extract was evaluated in human ovarian cancer cell lines and normal human ovarian surface epithelia (HOE) cells using a sulforhodamine B assay. Bioassay-guided isolation was carried out using column chromatography including HPLC, and the isolated natural products were characterized using GC-MS, LC-HRMS, and 1D/2D NMR techniques. Induction of apoptosis was evaluated using Caspase 3/7, 8, and 9, and Annexin V and PI based flow cytometry assays. SwissADME and SwissTargetPrediction web tools were used to predict the molecular properties and possible protein targets of identified active compounds. Key finding: The two cytotoxic compounds were identified as clerodane diterpenoids: 16(α/β)-hydroxy-cleroda-3,13(14)Z-dien-15,16-olide (1) and 16-oxo-cleroda-3,13(14)E-dien-15-oic acid (2) from the Acanthaceous plant for the first time. Compound 1 was a very abundant compound (0.7% per dry weight of plant material) and was shown to be more potent than compound 2 with IC50 values in the micromolar range against OVCAR-4 and OVCAR-8 cancer cells. Compounds 1 and 2 were less cytotoxic to HOE cell line. Both compounds induced apoptosis by increasing caspase 3/7 activities in a concentration dependent manner. Compound 1 further increased caspase 8 and 9 activities and apoptosis cell populations. Compounds 1 and 2 are both drug like, and compound 1 may target various proteins including a kinase. CONCLUSIONS Clerodane diterpenoids (1 and 2) in J. insularis were identified as cytotoxic to ovarian cancer cells via the induction of apoptosis, providing an abundant and valuable source of hit compounds for the treatment of ovarian cancer.
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Pterostilbene Sensitizes Cisplatin-Resistant Human Bladder Cancer Cells with Oncogenic HRAS. Cancers (Basel) 2020; 12:cancers12102869. [PMID: 33036162 PMCID: PMC7650649 DOI: 10.3390/cancers12102869] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/26/2020] [Accepted: 10/02/2020] [Indexed: 12/28/2022] Open
Abstract
Simple Summary RAS oncoproteins are considered undruggable cancer targets. Nearly 15% of cases of bladder cancer have a mutation of HRAS. The active HRAS contributes to the tumor progression and the risk of recurrence. Using our novel gene expression screening platform, pterostilbene was identified to sensitize cisplatin-resistant bladder cancer cells with HRAS alterations via RAS-related autophagy and cell senescence pathways, suggesting a potentially chemotherapeutic role of pterostilbene for cisplatin treatment of human bladder cancer with oncogenic HRAS. Pterostilbene is a safe and readily available food ingredient in edible plants worldwide. Exploiting the principle of combination therapy on pterostilbene-enhanced biosensitivity to identify undruggable molecular targets for cancer therapy may have a great possibility to overcome the cisplatin resistance of bladder cancer. Our data make HRAS a good candidate for modulation by pterostilbene for targeted cancer therapy in combination with conventional chemotherapeutic agents cisplatin plus gemcitabine. Abstract Analysis of various public databases revealed that HRAS gene mutation frequency and mRNA expression are higher in bladder urothelial carcinoma. Further analysis revealed the roles of oncogenic HRAS, autophagy, and cell senescence signaling in bladder cancer cells sensitized to the anticancer drug cisplatin using the phytochemical pterostilbene. A T24 cell line with the oncogenic HRAS was chosen for further experiments. Indeed, coadministration of pterostilbene increased stronger cytotoxicity on T24 cells compared to HRAS wild-type E7 cells, which was paralleled by neither elevated apoptosis nor induced cell cycle arrest, but rather a marked elevation of autophagy and cell senescence in T24 cells. Pterostilbene-induced autophagy in T24 cells was paralleled by inhibition of class I PI3K/mTOR/p70S6K as well as activation of MEK/ERK (a RAS target) and class III PI3K pathways. Pterostilbene-induced cell senescence on T24 cells was paralleled by increased pan-RAS and decreased phospho-RB expression. Coadministration of PI3K class III inhibitor 3-methyladenine or MEK inhibitor U0126 suppressed pterostilbene-induced autophagy and reversed pterostilbene-enhanced cytotoxicity, but did not affect pterostilbene-elevated cell senescence in T24 cells. Animal study data confirmed that pterostilbene enhanced cytotoxicity of cisplatin plus gemcitabine. These results suggest a therapeutic application of pterostilbene in cisplatin-resistant bladder cancer with oncogenic HRAS.
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Saponin Formosanin C-induced Ferritinophagy and Ferroptosis in Human Hepatocellular Carcinoma Cells. Antioxidants (Basel) 2020; 9:antiox9080682. [PMID: 32751249 PMCID: PMC7463707 DOI: 10.3390/antiox9080682] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/17/2020] [Accepted: 07/23/2020] [Indexed: 12/20/2022] Open
Abstract
Ferroptosis, a recently discovered form of iron-dependent cell death, requires an increased level of lipid-reactive oxygen species (ROS). Ferritinophagy, a ferritin degradation pathway, depends on a selective autophagic cargo receptor (NCOA4). By screening various types of natural compounds, formosanin C (FC) was identified as a novel ferroptosis inducer, characterized by attenuations of FC-induced viability inhibition and lipid ROS formation in the presence of ferroptosis inhibitor. FC also induced autophagic flux, evidenced by preventing autophagic marker LC3-II degradation and increasing yellow LC3 puncta in tandem fluorescent-tagged LC3 (mRFP-GFP) reporter plasmid (ptfLC3) transfected cells when combined with autophagic flux inhibitor. It is noteworthy that FC-induced ferroptosis and autophagic flux were stronger in HepG2 cells expressing higher NCOA4 and lower ferritin heavy chain 1 (FTH1) levels, agreeing with the results of gene expression analysis using CTRP and PRISM, indicating that FTH1 expression level exhibited a significant negative correlation with the sensitivity of the cells to a ferroptosis inducer. Confocal and electron microscopy confirmed the pronounced involvement of ferritinophagy in FC-induced ferroptosis in the cells with elevated NCOA4. Since ferroptosis is a non-apoptotic form of cell death, our data suggest FC has chemotherapeutic potential against apoptosis-resistant HCC with a higher NCOA4 expression via ferritinophagy.
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Lee H, Jeon J, Yoon J, Kim SH, Choi HS, Kang JS, Lee YS, Lee M, Kim YH, Chang HB. Comparative Metabolite Profiling of Wild and Cultivated Justicia procumbens L. Based on 1H-NMR Spectroscopy and HPLC-DAD Analysis. PLANTS 2020; 9:plants9070860. [PMID: 32646001 PMCID: PMC7411763 DOI: 10.3390/plants9070860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/03/2020] [Accepted: 07/03/2020] [Indexed: 12/04/2022]
Abstract
Justicia procumbens L. is known across Korea, India, China, and Taiwan as a remedy against fever, cough, sore throat, and cirrhosis of ascites. J. procumbens provides the raw material for a candidate anti-asthma drug (DW2008S) currently completing phase I clinical trials sponsored by Dong Wha Pharmaceutical Company. HPLC-DAD was used to quantify phytochemical constituents of J. procumbens, and HPLC and 1H-NMR results were assessed by multivariate analysis. This is the first time a comparative study using HPLC-DAD and NMR fingerprints has been applied to identify chemical differences between wild and cultivated J. procumbens. The amount of justicidin B as the marker compound was higher in cultivated samples (0.80 ± 0.25 mg/g) than in wild ones (0.63 ± 0.30 mg/g). Orthogonal partial least squares discriminant analysis (OPLS-DA) from HPLC and NMR data revealed that there were clear differences between wild and cultivated types and identified five secondary metabolites, which could help distinguish between wild and cultivated plants. Among these five lignans, diphyllin showed the most potent discrimination between two types and was significantly detected higher in cultivated ones than in wild ones. A combination of 1H-NMR and HPLC-DAD analysis is effective for J. procumbens standardization and metabolomics studies.
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Affiliation(s)
- Hyunyong Lee
- Research Institute, Dong Wha Pharmaceutical Company, Yongin-si, Gyeonggi-do 17084, Korea; (H.L.); (J.J.); (J.Y.); (S.-H.K.); (H.S.C.); (M.L.)
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea;
| | - Jihyun Jeon
- Research Institute, Dong Wha Pharmaceutical Company, Yongin-si, Gyeonggi-do 17084, Korea; (H.L.); (J.J.); (J.Y.); (S.-H.K.); (H.S.C.); (M.L.)
| | - Joobyoung Yoon
- Research Institute, Dong Wha Pharmaceutical Company, Yongin-si, Gyeonggi-do 17084, Korea; (H.L.); (J.J.); (J.Y.); (S.-H.K.); (H.S.C.); (M.L.)
| | - Seung-Hwan Kim
- Research Institute, Dong Wha Pharmaceutical Company, Yongin-si, Gyeonggi-do 17084, Korea; (H.L.); (J.J.); (J.Y.); (S.-H.K.); (H.S.C.); (M.L.)
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02453, Korea;
| | - Hyun Sik Choi
- Research Institute, Dong Wha Pharmaceutical Company, Yongin-si, Gyeonggi-do 17084, Korea; (H.L.); (J.J.); (J.Y.); (S.-H.K.); (H.S.C.); (M.L.)
| | - Jong Seung Kang
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea;
| | - Yong Sup Lee
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul 02453, Korea;
| | - Mase Lee
- Research Institute, Dong Wha Pharmaceutical Company, Yongin-si, Gyeonggi-do 17084, Korea; (H.L.); (J.J.); (J.Y.); (S.-H.K.); (H.S.C.); (M.L.)
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea;
- Correspondence: (Y.H.K.); (H.B.C.)
| | - Hwan Bong Chang
- Research Institute, Dong Wha Pharmaceutical Company, Yongin-si, Gyeonggi-do 17084, Korea; (H.L.); (J.J.); (J.Y.); (S.-H.K.); (H.S.C.); (M.L.)
- Correspondence: (Y.H.K.); (H.B.C.)
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Wu CS, Wu SY, Chen HC, Chu CA, Tang HH, Liu HS, Hong YR, Huang CYF, Huang GC, Su CL. Curcumin functions as a MEK inhibitor to induce a synthetic lethal effect on KRAS mutant colorectal cancer cells receiving targeted drug regorafenib. J Nutr Biochem 2019; 74:108227. [DOI: 10.1016/j.jnutbio.2019.108227] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 07/31/2019] [Accepted: 08/12/2019] [Indexed: 12/13/2022]
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Using the Pleiotropic Characteristics of Curcumin to Validate the Potential Application of a Novel Gene Expression Screening Platform. Nutrients 2019; 11:nu11061397. [PMID: 31234318 PMCID: PMC6627093 DOI: 10.3390/nu11061397] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 06/12/2019] [Accepted: 06/18/2019] [Indexed: 12/12/2022] Open
Abstract
Curcumin is a polyphenol derived from curcumin longa that exhibits anticancer and anti-inflammatory properties. The consumption of foods at supernutritional levels to obtain health benefits may paradoxically result in negative health outcomes. In the present study, multiple targeting characteristics of curcumin were analyzed using our gene expression screening system, which utilized the gene expression signatures of curcumin from human hepatocellular carcinoma and colorectal cancer cells to query gene expression databases and effectively identify the molecular actions of curcumin. In agreement with prediction, curcumin inhibited NF-κB and Aurora-A, and induced G2/M arrest and apoptosis. Curcumin-suppressed NF-κB was identified through inhibition of PLCG1, PIK3R1, and MALT1 in the CD4-T-cell-receptor-signaling NF-κB cascade pathway. The results suggest that our novel gene expression screening platform is an effective method of rapidly identifying unknown biological functions and side effects of compounds with potential nutraceutical benefits.
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Luo J, Qin J, Fu Y, Zhang S, Zhang X, Yang M. 6'-Hydroxy Justicidin B Triggers a Critical Imbalance in Ca 2+ Homeostasis and Mitochondrion-Dependent Cell Death in Human Leukemia K562 Cells. Front Pharmacol 2018; 9:601. [PMID: 29950991 PMCID: PMC6008565 DOI: 10.3389/fphar.2018.00601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 05/18/2018] [Indexed: 12/13/2022] Open
Abstract
Justicia procumbens (J. procumbens) is a traditional Chinese herbal medicine which was used for the treatment of fever, pain, and cancer. A compound 6'-hydroxy justicidin B (HJB) isolated from J. procumbens exhibits promising biological properties. However, the mechanism of action and the in vivo behavior of HJB remain to be elucidated. In this study, we investigated the mechanism of action of HJB on human leukemia K562 cells and its pharmacokinetic properties in rats. The results demonstrated that HJB significantly inhibited the proliferation of K562 cells and promoted apoptosis. Besides, HJB resulted in decreased mitochondrial membrane potential deltaPSIm, increased the level of the calcium homeostasis regulator protein TRPC6 and cytosolic calcium. The activity of caspase-8, caspase-9 and the expression of p53 were significantly increased after treatment with HJB. Additionally, HJB has rapid absorption rate and relative long elimination t1/2, indicating a longer residence time in vivo. The results indicate that HJB inhibited the proliferation of K562 cells and induced apoptosis by affecting the function of mitochondria and calcium homeostasis to activate the p53 signaling pathway. The pharmacokinetic study of HJB suggested it is absorbed well and has moderate metabolism in vivo. These results present HJB as a potential novel alternative to standard human leukemia therapies.
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Affiliation(s)
- Jiaoyang Luo
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiaan Qin
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanwei Fu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shanshan Zhang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xingguo Zhang
- School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Meihua Yang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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14
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Al-Qathama A, Gibbons S, Prieto JM. Differential modulation of Bax/Bcl-2 ratio and onset of caspase-3/7 activation induced by derivatives of Justicidin B in human melanoma cells A375. Oncotarget 2017; 8:95999-96012. [PMID: 29221182 PMCID: PMC5707076 DOI: 10.18632/oncotarget.21625] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 08/26/2017] [Indexed: 12/26/2022] Open
Abstract
Diphyllin and its derivatives are well known cytotoxic natural products structurally related to the anti-cancer drug podophyllotoxin. We here study their structure-activity relationship upon human melanoma cells for first time. To this end, human melanoma A375 cells were incubated with Justicidin B and its 4-methoxylated or 4-glycosylated derivatives to evaluate their selective cytotoxicity and study their effects on cell cycle distribution, caspase activation, apoptosis induction using Annexin V-FITC/PI staining, cell morphology and western blot analysis. Diphyllin methyl ether (GI50 = 3.66 μM) and Justicidin B (GI50 = 1.70 μM) caused an elevation of both early and late apoptosis populations whereas Diphyllin apioside (GI50 = 0.84 μM) and its acetate (GI50= 0.39 μM) enhanced late apoptosis population only (Annexin V-positive/PI-positive). All induced cell cycle arrest at S phase and classic morphological indicators of apoptosis (blebbing, apoptotic bodies, and nuclear fragmentation) accompanied with an elevation of cells with low DNA content (sub-G1). All compounds increased the Bax/Bcl-2 ratio by enhancing Bax expression which evidences the involvement of the mitochondria (intrinsic pathway) in the apoptotic process. These caspase-3/7 results evidence that 4-methoxylation or 4-O-glycosylation of Justicidin B -a caspase independent mitochondrial apoptosis-inducer- triggers caspase-3/7 activation at different times (24h vs. 48h, respectively). Interestingly, the methoxylation causes attenuation of Bcl-2 protein expression contrarily to Diphyllin methyl ether or the O-glycosylated derivatives. Finally, the compounds exhibited significantly less toxicity when tested in adult human dermal fibroblasts and their GI50 in melanoma Sk-Mel-5 cells was not influenced by MDR1/Pgp inhibitors. This study may inform the synthesis of future Diphyllin derivatives with different apoptosis mechanism of action towards human melanoma cells.
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Affiliation(s)
- Aljawharah Al-Qathama
- Centre for Pharmacognosy and Phytotherapy, University College London School of Pharmacy, London WC1N 1AX, United Kingdom.,Department of Pharmacognosy, Faculty of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Simon Gibbons
- Centre for Pharmacognosy and Phytotherapy, University College London School of Pharmacy, London WC1N 1AX, United Kingdom
| | - Jose M Prieto
- Centre for Pharmacognosy and Phytotherapy, University College London School of Pharmacy, London WC1N 1AX, United Kingdom
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15
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Won SJ, Yen CH, Hsieh HW, Chang SW, Lin CN, Huang CYF, Su CL. Using connectivity map to identify natural lignan justicidin A as a NF-κB suppressor. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.04.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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16
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Zhang HJ, Rumschlag-Booms E, Guan YF, Wang DY, Liu KL, Li WF, Nguyen VH, Cuong NM, Soejarto DD, Fong HHS, Rong L. Potent Inhibitor of Drug-Resistant HIV-1 Strains Identified from the Medicinal Plant Justicia gendarussa. JOURNAL OF NATURAL PRODUCTS 2017; 80:1798-1807. [PMID: 28613071 DOI: 10.1021/acs.jnatprod.7b00004] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Justicia gendarussa, a medicinal plant collected in Vietnam, was identified as a potent anti-HIV-1 active lead from the evaluation of over 4500 plant extracts. Bioassay-guided separation of the extracts of the stems and roots of this plant led to the isolation of an anti-HIV arylnaphthalene lignan (ANL) glycoside, patentiflorin A (1). Evaluation of the compound against both the M- and T-tropic HIV-1 isolates showed it to possess a significantly higher inhibition effect than the clinically used anti-HIV drug AZT. Patentiflorin A and two congeners were synthesized, de novo, as an efficient strategy for resupply as well as for further structural modification of the anti-HIV ANL glycosides in the search for drug leads. Subsequently, it was determined that the presence of a quinovopyranosyloxy group in the structure is likely essential to retain the high degree of anti-HIV activity of this type of compounds. Patentiflorin A was further investigated against the HIV-1 gene expression of the R/U5 and U5/gag transcripts, and the data showed that the compound acts as a potential inhibitor of HIV-1 reverse transcription. Importantly, the compound displayed potent inhibitory activity against drug-resistant HIV-1 isolates of both the nucleotide analogue (AZT) and non-nucleotide analogue (nevaripine). Thus, the ANL glycosides have the potential to be developed as novel anti-HIV drugs.
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Affiliation(s)
- Hong-Jie Zhang
- School of Chinese Medicine, Hong Kong Baptist University , Kowloon, Hong Kong SAR, People's Republic of China
| | - Emily Rumschlag-Booms
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago , 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
| | - Yi-Fu Guan
- School of Chinese Medicine, Hong Kong Baptist University , Kowloon, Hong Kong SAR, People's Republic of China
| | - Dong-Ying Wang
- School of Chinese Medicine, Hong Kong Baptist University , Kowloon, Hong Kong SAR, People's Republic of China
| | - Kang-Lun Liu
- School of Chinese Medicine, Hong Kong Baptist University , Kowloon, Hong Kong SAR, People's Republic of China
| | - Wan-Fei Li
- School of Chinese Medicine, Hong Kong Baptist University , Kowloon, Hong Kong SAR, People's Republic of China
| | - Van H Nguyen
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST) , 18 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam
| | | | - Djaja D Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago , 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Harry H S Fong
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago , 833 South Wood Street, Chicago, Illinois 60612, United States
| | - Lijun Rong
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago , 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
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17
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Kitazawa S, Nishizawa S, Nakagawa H, Funata M, Nishimura K, Soga T, Hara T. Cancer with low cathepsin D levels is susceptible to vacuolar (H + )-ATPase inhibition. Cancer Sci 2017; 108:1185-1193. [PMID: 28317223 PMCID: PMC5480082 DOI: 10.1111/cas.13240] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 03/09/2017] [Accepted: 03/13/2017] [Indexed: 01/17/2023] Open
Abstract
Vacuolar (H+)‐ATPases (V‐ATPases) have important roles in the supply of nutrients to tumors by mediating autophagy and the endocytic uptake of extracellular fluids. Accordingly, V‐ATPases are attractive therapeutic targets for cancer. However, the clinical use of V‐ATPase inhibitors as anticancer drugs has not been realized, possibly owing to their high toxicity in humans. Inhibition of V‐ATPase may be an appropriate strategy in highly susceptible cancers. In this study, we explored markers of V‐ATPase inhibitor sensitivity. V‐ATPase inhibitors led to pH impairment in acidic intracellular compartments, suppression of macropinocytosis, and decreased intracellular amino acid levels. The sensitivity of cells to V‐ATPase inhibitors was correlated with low cathepsin D expression, and cancer cells showed increased sensitivity to V‐ATPase inhibitors after pretreatment with a cathepsin D inhibitor and siRNA targeting the cathepsin D gene (CTSD). In addition, V‐ATPase inhibitor treatment led to the induction of the amino acid starvation response, upregulation of endoplasmic reticulum stress markers, and suppression of mammalian target of rapamycin (mTOR) signaling in cells expressing low levels of cathepsin D. Some colorectal cancer patients showed the downregulation of cathepsin D in tumor tissues compared with matched normal tissues. These findings indicate that V‐ATPase inhibitors are promising therapeutic options for cancers with downregulated cathepsin D.
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Affiliation(s)
- Satoshi Kitazawa
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Satoru Nishizawa
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Hideyuki Nakagawa
- Biomolecular Research Laboratories, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Masaaki Funata
- Biomolecular Research Laboratories, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Kazuho Nishimura
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Japan
| | - Takahito Hara
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
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18
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Won S, Yen C, Lin T, Jiang‐Shieh Y, Lin C, Chen J, Su C. Autophagy mediates cytotoxicity of human colorectal cancer cells treated with garcinielliptone FC. J Cell Physiol 2017; 233:497-505. [DOI: 10.1002/jcp.25910] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 03/13/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Shen‐Jeu Won
- Department of Microbiology and ImmunologyCollege of MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Cheng‐Hsin Yen
- Department of Human Development and Family StudiesNational Taiwan Normal UniversityTaipeiTaiwan
| | - Ting‐Yu Lin
- Department of Microbiology and ImmunologyCollege of MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Ya‐Fen Jiang‐Shieh
- Department of AnatomyCollege of MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Chun‐Nan Lin
- School of PharmacyKaohsiung Medical UniversityKaohsiungTaiwan
| | - Jyun‐Ti Chen
- Department of Human Development and Family StudiesNational Taiwan Normal UniversityTaipeiTaiwan
| | - Chun‐Li Su
- Department of Human Development and Family StudiesNational Taiwan Normal UniversityTaipeiTaiwan
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19
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Su CL, Tseng CL, Ramesh C, Liu HS, Huang CYF, Yao CF. Using gene expression database to uncover biology functions of 1,4-disubstituted 1,2,3-triazole analogues synthesized via a copper (I)-catalyzed reaction. Eur J Med Chem 2017; 132:90-107. [PMID: 28342400 DOI: 10.1016/j.ejmech.2017.03.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/14/2017] [Accepted: 03/15/2017] [Indexed: 12/18/2022]
Abstract
We have synthesized bioactive 1,4-disubstituted 1,2,3-triazole analogues containing 2H-1,4-benzoxazin-3-(4H)-one derivatives via 1,3-dipolar cycloaddition in the presence of CuI. All the reactions proceeded smoothly and afforded its desired products in excellent yields. Among these analogues, 3y exhibited a better cytotoxic effect on human hepatocellular carcinoma (HCC) Hep 3B cells and displayed less cytotoxicity on normal human umbilical vein endothelial cells, compared with Sorafenib, a targeted therapy for advanced HCC. 3y also induced stronger apoptosis and autophagy. Addition of curcumin enhanced 3y-induced cytotoxicity by further induction of autophagy. Using gene expression signatures of 3y to query Connectivity Map, a glycogen synthase kinase-3 inhibitor (AR-A014418) was predicted to display similar molecular action of 3y. Experiments further demonstrate that AR-A014418 acted like 3y, and vice versa. Overall, our data suggest the chemotherapeutic potential of 3y on HCC.
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Affiliation(s)
- Chun-Li Su
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan.
| | - Chia-Ling Tseng
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan
| | - Chintakunta Ramesh
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
| | - Hsiao-Sheng Liu
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; Center of Infectious Disease and Signaling Research Center, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Chi-Ying F Huang
- Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan; Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Ching-Fa Yao
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan.
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20
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Determination and pharmacokinetics of chinensinaphthol methyl ether in rat urine by a sensitive and specific UFLC-ESI-MS/MS method. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1033-1034:311-316. [PMID: 27595651 DOI: 10.1016/j.jchromb.2016.08.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 11/23/2022]
Abstract
A rapid, stable, and sensitive method based on ultra-fast liquid chromatography combined with electrospray ionization tandem mass spectrometry (UFLC-ESI-MS/MS) was established and optimized for quantification and pharmacokinetics analysis of chinensinaphthol methyl ether (CME) in rat urine. Samples were prepared by liquid phase extraction with ethyl acetate, and chromatographic separation was performed on an ACQUITY UPLC(®) BEH Phenyl column (2.1×50mm, 1.7μm). For gradient elution, we used a mobile phase consisting of water containing 0.1% formic acid and 5mmol/L ammonium formate and methanol with 0.1% formic acid. The quantification was executed under multiple reaction monitoring (MRM) in positive mode. The precursor/product transition (m/z) in the positive ion mode was [M+H](+)m/z=395.1→346.1. This method was validated by evaluating specificity, linearity, matrix effects, recovery, accuracy, precision, and stability, which were all shown to be reasonable and reliable. The lower limit of quantification (LOQ) was 0.5ng/mL, and the linear range was 0.5-100ng/mL. The method was successfully applied to quantify and analyze the pharmacokinetics of CME in rat urine. After oral administration of a single dose of CME (5.0mg/kg), the accumulated amount of CME excreted in urine was 162.3±54.1ng, and the terminal elimination half-life was 53.4±5.3h, indicating low CME excretion in urine and significant CME metabolism in vivo.
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21
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Access to densely functionalized naphthalenes by organobase catalyzed domino reaction of 2-(2-formylaryl)acetophenones with nitroolefins. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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22
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Won SJ, Lin TY, Yen CH, Tzeng YH, Liu HS, Lin CN, Yu CH, Wu CS, Chen JT, Chen YT, Huang CYF, Su CL. A novel natural tautomeric pair of garcinielliptone FC suppressed nuclear factor κB and induced apoptosis in human colorectal cancer cells. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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23
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Antiangiogenesis as the novel mechanism for justicidin A in the anticancer effect on human bladder cancer. Anticancer Drugs 2015; 26:428-36. [PMID: 25569706 DOI: 10.1097/cad.0000000000000203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Justicidin A (JA) is one of the methanol extracts of Justicia procumbens and was reported to induce apoptosis and inhibit the proliferation of human colon cancer cells. Using bladder cancer as a paradigm, this study was designed to identify the novel molecular basis underlying the antiangiogenic activities of JA and its potential in cancer therapy. Human bladder cancer cell lines (TSGH8301 and RT4) and immortalized uroepithelial cell lines (E6 and E7) were chosen to investigate the efficacy of JA in cell proliferation, apoptosis, and angiogenesis in vitro. The biological effects of JA treatment in vivo were examined using a xenograft tumor model in SCID mice. JA showed a dose-dependent and time-dependent inhibition of cell proliferation on TSGH8301 cancer cells, with IC50 values determined to be 0.44 μmol/l. Of interest, TSGH8301 cancer cells were more sensitive to JA than E7 immortalized uroepithelial cells, especially at lower concentrations. We further showed that JA inhibited the autocrine production of angiogenic factors and matrix-degrading enzymes in vitro and microvessel density in SCID mice in vivo (P< 0.01). Both differential cytotoxicity and angiogenesis inhibition of JA were confirmed by SCID mice experiments. Together, JA showed antiangiogenesis in vitro and in vivo through pleiotropic positive and negative regulators of angiogenesis molecules. The current investigation supports the potential of JA as an alternative chemoprevention agent for human bladder cancer.
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24
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Yamamoto Y, Mori S, Shibuya M. A Combined Transition-Metal-Catalyzed and Photopromoted Process: Synthesis of 2,3-Fused 4-Phenylnaphthalen-1-yl Carboxylates from 1,7-Diaryl-1,6-diynes. Chemistry 2015; 21:9093-100. [PMID: 25980465 DOI: 10.1002/chem.201500978] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Indexed: 12/19/2022]
Abstract
2,3-Fused 4-phenylnaphthalen-1-yl carboxylates were synthesized in a step- and atom-economical manner using a ruthenium-catalyzed hydrocarboxylative cyclization of 1,7-diaryl-1,6-diynes and subsequent oxidative photocyclization. The scope of this novel two-step process was demonstrated by the construction of diverse structures from substrates with various tethers and terminal aryl groups. Late-stage CH functionalizations of the arylnaphthalene product further enhance the synthetic potential of the developed process.
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Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601 (Japan).
| | - Shota Mori
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601 (Japan)
| | - Masatoshi Shibuya
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601 (Japan)
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25
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Discovery of molecular mechanisms of lignan justicidin A using L1000 gene expression profiles and the Library of Integrated Network-based Cellular Signatures database. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.04.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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26
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Manojveer S, Balamurugan R. A Cascade Approach to Naphthalene Derivatives fromo-Alkynylbenzaldehydes and Enolizable Ketones via in-situ-Formed Acetals. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500497] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Park Y, Choi J, Lim JW, Kim H. β-Carotene-induced apoptosis is mediated with loss of Ku proteins in gastric cancer AGS cells. GENES AND NUTRITION 2015; 10:467. [PMID: 25981694 DOI: 10.1007/s12263-015-0467-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 05/02/2015] [Indexed: 12/18/2022]
Abstract
High dietary intakes and high blood levels of β-carotene are associated with a decreased incidence of various cancers. The anticancer effect of β-carotene is related to its pro-oxidant activity. DNA repair Ku proteins, as a heterodimer of Ku70 and Ku80, play a crucial role in DNA double-strand break repair. Reductions in Ku70/80 contribute to apoptosis. Previously, we showed that reactive oxygen species (ROS) activate caspase-3 which induces degradation of Ku proteins. In the present study, we investigated the mechanism of β-carotene-induced apoptosis of gastric cancer AGS cells by determining cell viability, DNA fragmentation, apoptotic indices (increases in cytochrome c and Bax, decrease in Bcl-2), ROS levels, mitochondrial membrane potential, caspase-3 activity, Ku70/80 levels, and Ku-DNA-binding activity of the cells treated with or without antioxidant N-acetyl cysteine and caspase-3 inhibitor z-DEVED-fmk. As a result, β-carotene induced apoptosis (decrease in cell viability, increases in DNA fragmentation and apoptotic indices) and caspase-3 activation, but decreased Ku70/80 levels and Ku-DNA-binding activity. β-Carotene-induced alterations (increase in caspase-3 activity, decrease in Ku proteins) and apoptosis were inhibited by N-acetyl cysteine and z-DEVED-fmk. Increment of intracellular and mitochondrial ROS levels and loss of mitochondrial membrane potential were suppressed by N-acetyl cysteine, but not by z-DEVED-fmk in β-carotene-treated cells. Therefore, β-carotene-induced increases in ROS and caspase-3 activity may lead to reduction of Ku70/80 levels, which results in apoptosis in gastric cancer cells. Loss of Ku proteins might be the underlying mechanism for β-carotene-induced apoptosis in gastric cancer cells.
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Affiliation(s)
- Yoona Park
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul, 120-749, Korea
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28
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Won SJ, Yen CH, Liu HS, Wu SY, Lan SH, Jiang-Shieh YF, Lin CN, Su CL. Justicidin A-induced autophagy flux enhances apoptosis of human colorectal cancer cells via class III PI3K and Atg5 pathway. J Cell Physiol 2015; 230:930-46. [PMID: 25216025 DOI: 10.1002/jcp.24825] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 09/05/2014] [Indexed: 12/22/2022]
Abstract
Our previous reports showed that justicidin A (JA), a novel and pure arylnaphthalide lignan isolated from Justicia procumbens, induces apoptosis of human colorectal cancer cells and hepatocellular carcinoma cells, leading to the suppression of both tumor cell growth in NOD-SCID mice. Here, we reveal that JA induces autophagy in human colorectal cancer HT-29 cells by conversion of autophagic marker LC3-I to LC3-II. Furthermore, LC3 puncta and autophagic vesicle formation, and SQSTM1/p62 suppression were observed. Administration of autophagy inhibitor (bafilomycin A1 and chloroquine) and transfection of a tandem fluorescent-tagged LC3 (mRFP-GFP) reporter plasmid (ptfLC3) demonstrated that JA induces autophagy flux in HT-29 cells. Expression of LC3, SQSTM1, Beclin 1, and nuclear DNA double-strand breaks (representing apoptosis) were also detected in the tumor tissue of HT-29 cells transplanted into NOD-SCID mice orally administrated with JA. In addition, the expression of autophagy signaling pathway-related molecules p-PDK1, p-mTOR, p-p70S6k/p-RPS6KB2 was decreased, whereas that of class III PI3K, Beclin 1, Atg5-Atg12, and mitochondrial BNIP3 was increased in response to JA. Pre-treatment of the cells with class III PI3K inhibitor 3-methyladenine or Atg5 shRNA attenuated JA-induced LC3-II expression and LC3 puncta formation, indicating the involvement of class III PI3K and Atg5. A novel mechanism was demonstrated in the anticancer compound JA; pre-treatment with 3-methyladenine or Atg5 shRNA blocked JA-induced suppression in cell growth and colony formation, respectively, via inhibition of apoptosis. In contrast, administration of apoptosis inhibitor Z-VAD did not affect JA-induced autophagy. Our data suggest the chemotherapeutic potential of JA for treatment of human colorectal cancer.
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Affiliation(s)
- Shen-Jeu Won
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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29
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Meng J, Zhang F, Zhang XT, Zhang T, Li YH, Fan L, Sun Y, Zhang HL, Mei QB. Ku70 is essential for histone deacetylase inhibitor trichostatin A-induced apoptosis. Mol Med Rep 2015; 12:581-6. [PMID: 25695595 DOI: 10.3892/mmr.2015.3358] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 01/02/2015] [Indexed: 11/05/2022] Open
Abstract
It was previously reported that the histone deacetylase inhibitor (HDACI) trichostatin A (TSA) induced B cell lymphoma 2 (Bcl-2)-associated X protein (Bax)-dependent apoptosis in colorectal cancer (CRC) cells. In addition, Ku70 has been identified as a regulator of apoptosis, the mechanism of which proceeds via interacting with Bax. The aim of the present study was to investigate the role of Ku70 in TSA-induced apoptosis in the CRC cell lines HCT116 and HT29. The results showed that TSA induced the acetylation of Ku70, which was found to be associated with increased apoptosis. In addition, TSA treatment promoted the release of Bax from its complex with Ku70. Bax was then detected to have translocated from the cytoplasm into the mitochondria, while cytochrome c was detected to have translocated from the mitochondria into the cytoplasm. Furthermore, knockdown of Ku70 using small interfering RNA decreased TSA-induced apoptosis as well as downregulated the expression of Bax. These effects were rescued through pre-treatment of cells with the proteasome inhibitor MG132. In conclusion, the results of the present study suggested that Ku70 acetylation mediated TSA-induced apoptosis in CRC cells. In addition, Ku70 was found to be indispensable in TSA-induced apoptosis due to its role in protecting Bax from proteosomal degradation.
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Affiliation(s)
- Jin Meng
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of The State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Feng Zhang
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of The State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xu-Tao Zhang
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of The State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Tao Zhang
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Yu-Hua Li
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of The State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Lei Fan
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of The State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yang Sun
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of The State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - He-Long Zhang
- Department of Oncology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Qi-Bing Mei
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of The State Administration of Traditional Chinese Medicine, Department of Pharmacology, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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Su CL, Wang YT, Chang MH, Fang K, Chen K. The novel heterocyclic trioxirane [(1,3,5-tris oxiran-2-yl)methyl)-1,3,5-triazinane-2,4,6-trione (TATT)] exhibits a better anticancer effect than platinum-based chemotherapy by induction of apoptosis and curcumin further enhances its chemosensitivity. Cell Biochem Biophys 2014; 68:597-609. [PMID: 24078402 DOI: 10.1007/s12013-013-9752-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The heterocyclic trioxirane compound [1,3,5-tris((oxiran-2-yl)methyl)-1,3,5-triazinane-2,4,6-trione (TATT)] is a synthetic compound which has been used as an experimental anticancer agent in human clinical trials. Curcumin, an active natural compound in turmeric and curry, is an ingredient commonly used in the traditional diet of many Asian countries. In the present study, we observed that TATT exhibited a better anticancer effect on chemoresistant human colorectal cancer HT-29 cells and displayed less cytotoxicity on normal human umbilical vein endothelial cells, compared with FDA-approved anticancer drugs (cisplatin, carboplatin, or oxaliplatin) using MTT assay. TATT also induced a stronger apoptotic effect than that seen with the three studied anticancer drugs, as characterized by externalization of phosphatidylserine using flow cytometry. Administration of caspase 8-specific inhibitor (z-IETD-fmk) and mitochondrial permeability transition pore inhibitor (cyclosporin A) demonstrated that TATT-induced apoptosis proceeded via both extrinsic and intrinsic signaling pathways. It is noteworthy that coadministration of curcumin further significantly increased TATT-induced cytotoxicity, externalization of phosphatidylserine (representing early apoptosis), and the percentages of cells at the sub-G1 phase (representing late apoptosis), producing an additivity and/or synergistic effect, and vice versa. Suppression of nuclear NF-κB was involved in curcumin-enhanced chemosensitivity of TATT. Overall, our data indicate that TATT exerts a chemotherapeutic effect on colorectal cancer cells and coadministration of curcumin enhances the treatment effect of TATT.
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Affiliation(s)
- Chun-Li Su
- Department of Human Development and Family Studies, National Taiwan Normal University, No. 162, Sec. 1, He-ping East Road, Taipei, 106, Taiwan,
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Momekov G, Yossifov D, Guenova M, Michova A, Stoyanov N, Konstantinov S, Ionkov T, Sacheva P, Ionkova I. Apoptotic mechanisms of the biotechnologically produced arylnaphtalene lignan justicidin B in the acute myeloid leukemia-derived cell line HL-60. Pharmacol Rep 2014; 66:1073-6. [PMID: 25443737 DOI: 10.1016/j.pharep.2014.07.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 06/18/2014] [Accepted: 07/18/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND The present study aimed at optimization of the biotechnological production of the lignan justicidin B by genetically transformed cultures of Linum leonii and the pharmacological evaluation of the pro-apoptotic effects of the compound in HL-60 cells. METHODS A rapidly growing selected root line of L. leonii was grown in 2-L bioreactor for period of 40 days and the protocols for obtaining of the compound have been optimized. The pharmacological study included evaluation of the cytotoxicity of the compound in HL-60 cells (MTT-assay), its apoptogenic effects and its effects on caspase 3,8 and 9 activation. RESULTS After 40 days of sterile run scale up of hairy root culture in bioreactor, 27.2g/L dry weight of root biomass was harvested from the bioreactor culture vessel, recording about nine times increase over initial inoculum (3.0g), with 1.55%±0.07 Justicidin B, greater than yields from 300ml flasks. Our findings are the first work toward the scale up of L. leonii hairy roots-based biotechnological production of Justicidin B, employing bioreactors for high biomass production to meet the industrial requirement. The results from the pharmacological evaluation have shown that the tested arylnaphtalene lignan is a potent cytotoxic and proapoptotic agent against HL-60. The induction of apoptosis proceeds via activation of the intrinsic mitochondrial cell-death signaling pathways. CONCLUSION The potent activity at low micromolar concentration and the feasibility of biotechnological production of justicidin B implies that there is enormous scope in its further evaluation as possible antineoplastic drug candidate.
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Affiliation(s)
- Georgi Momekov
- Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria.
| | - Deyan Yossifov
- Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Margarita Guenova
- Laboratory of Haematopathology and Immunology, National Specialised Hospital for Active Treatment of Haematological Diseases, Sofia, Bulgaria
| | - Albena Michova
- Laboratory of Haematopathology and Immunology, National Specialised Hospital for Active Treatment of Haematological Diseases, Sofia, Bulgaria; Department of Immunology, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Nikolay Stoyanov
- Laboratory of Haematopathology and Immunology, National Specialised Hospital for Active Treatment of Haematological Diseases, Sofia, Bulgaria
| | - Spiro Konstantinov
- Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Todor Ionkov
- Department of Automation, Faculty of Automatics, Technical University of Sofia, Sofia, Bulgaria
| | - Pavlina Sacheva
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Iliana Ionkova
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
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Zu G, Dou Y, Tian Q, Wang H, Zhao W, Li F. Role and mechanism of radiological protection cream in treating radiation dermatitis in rats. J TRADIT CHIN MED 2014; 34:329-37. [PMID: 24992761 DOI: 10.1016/s0254-6272(14)60098-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To explore the role and mechanism of a radiation protection cream (Rp) in the treatment of radiation dermatitis, and to accumulate necessary technical information for a new drug report on Rp. METHODS High-performance liquid chromatography was used to establish the method of measuring the main effective ingredients of sovereign and adjuvant herbs of Rp drugs, and to formulate the draft quality standards of Rp. A total of 48 Sprague-Dawley male rats were randomly divided into the Model, Trolamine cream (Tc), Rp and Blank groups according to a random number table method. The skin of each rat's buttocks was irradiated using an electron linear accelerator to establish an acute radiation dermatitis model. The histological changes were observed under light microscopy and electron microscopy during wound healing and the effect of Rp on rat fibroblast Ku70/80 gene expression was detected at the transcriptional level. RESULTS Pathological examination revealed that Rp protected the cellular and subcellular structures of skin after irradiation, promoting the proliferation and restoration of collagen fibers. Ku70/80 mRNA expression levels in the Rp and Tc groups were higher than that in the model group (P < 0.05). Moreover, The majority of grade radiation dermatitis relative to the Model, Rp and Tc groups for reducing grade III and IV dermatitis efficiency were 85.7% and 69.2% (P < 0.05), respectively. The efficacy of Rp group in treating radiation dermatitis was better than the Trolamine cream group by 16.5% (P < 0.05). CONCLUSION Compared with Tc, Rp had certain advantages in the efficacy and performance to price ratio. Thus, Rp is considered an effective alternative formulation for the prevention and treatment of radiation dermatitis.
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Manojveer S, Balamurugan R. Synthesis of Naphthalene Derivatives from ortho-Alkynylacetophenone Derivatives via Tandem in Situ Incorporation of Acetal and Intramolecular Heteroalkyne Metathesis/Annulation. Org Lett 2014; 16:1712-5. [DOI: 10.1021/ol5003835] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ke CS, Liu HS, Yen CH, Huang GC, Cheng HC, Huang CYF, Su CL. Curcumin-induced Aurora-A suppression not only causes mitotic defect and cell cycle arrest but also alters chemosensitivity to anticancer drugs. J Nutr Biochem 2014; 25:526-39. [PMID: 24613085 DOI: 10.1016/j.jnutbio.2014.01.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 12/29/2013] [Accepted: 01/08/2014] [Indexed: 01/19/2023]
Abstract
Overexpression of oncoprotein Aurora-A increases drug resistance and promotes lung metastasis of breast cancer cells. Curcumin is an active anticancer compound in turmeric and curry. Here we observed that Aurora-A protein and kinase activity were reduced in curcumin-treated human breast chemoresistant nonmetastatic MCF-7 and highly metastatic cancer MDA-MB-231 cells. Curcumin acts in a similar manner to Aurora-A small interfering RNA (siRNA), resulting in monopolar spindle formation, S and G2/M arrest, and cell division reduction. Ectopic Aurora-A extinguished the curcumin effects. The anticancer effects of curcumin were enhanced by Aurora-A siRNA and produced additivity and synergism effects in cell division and monopolar phenotype, respectively. Combination treatment with curcumin overrode the chemoresistance to four Food and Drug Administration (FDA)-approved anticancer drugs (ixabepilone, cisplatin, vinorelbine, or everolimus) in MDA-MB-231 cells, which was characterized by a decrease in cell viability and the occurrence of an additivity or synergy effect. Ectopic expression of Aurora-A attenuated curcumin-enhanced chemosensitivity to these four tested drugs. A similar benefit of curcumin was observed in MCF-7 cells treated with ixabepilone, the primary systemic therapy to patients with invasive breast cancer (stages IIA-IIIB) before surgery. Antagonism effect was observed when MCF-7 cells were treated with curcumin plus cisplatin, vinorelbine or everolimus. Curcumin-induced enhancement in chemosensitivity was paralleled by significant increases (additivity or synergy effect) in apoptosis and cell cycle arrest at S and G2/M phases, the consequences of Aurora-A inhibition. These results suggest that a combination of curcumin with FDA-approved anticancer drugs warrants further assessment with a view to developing a novel clinical treatment for breast cancer.
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Affiliation(s)
- Ching-Shiun Ke
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan
| | - Hsiao-Sheng Liu
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; Center of Infectious Disease and Signaling Research Center, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Cheng-Hsin Yen
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan
| | - Guan-Cheng Huang
- Division of Hemato-oncology, Department of Internal Medicine, Yuan's General Hospital, Kaohsiung 802, Taiwan
| | - Hung-Chi Cheng
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Chi-Ying F Huang
- Institute of BioPharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan
| | - Chun-Li Su
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan.
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Wang YT, Liu HS, Su CL. Curcumin-enhanced chemosensitivity of FDA-approved platinum (II)-based anti-cancer drugs involves downregulation of nuclear endonuclease G and NF-κB as well as induction of apoptosis and G2/M arrest. Int J Food Sci Nutr 2014; 65:368-74. [PMID: 24438326 DOI: 10.3109/09637486.2013.871694] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Curcumin, an active natural compound in turmeric and curry, has been reported to exhibit anti-cancer effect. Cisplatin, carboplatin and oxaliplatin are used to treat various types of cancers. However, acquired resistance and toxicities are observed. Here, the addition of curcumin significantly increased cytotoxicity of the anti-cancer drugs on human colorectal cancer HT-29 cells, producing synergistic (cisplatin and carboplatin) and additivity (oxaliplatin) effects. Treatments in combination with curcumin resulted in a significantly increased induction of apoptosis and occurrence of G2/M arrest. Nuclear apoptosis-inducing factor (AIF), EndoG and NF-κB were elevated by anti-cancer drugs, suggesting the involvement of AIF and EndoG. The addition of curcumin suppressed nuclear AIF and EndoG and reversed anti-cancer drugs-induced NF-κB expression, suggesting the association of EndoG and NF-κB in curcumin-enhanced chemosensitivity. Therefore, the intake of foods rich in curcumin or curcumin-containing supplements should be taken into consideration for patients receiving chemotherapy to optimize the outcome of treatments.
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Affiliation(s)
- Ying-Ti Wang
- Department of Human Development and Family Studies, National Taiwan Normal University , Taipei , Taiwan
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Park JE, Lee J, Seo SY, Shin D. Regioselective route for arylnaphthalene lactones: convenient synthesis of taiwanin C, justicidin E, and daurinol. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Al-Ubaidi FLT, Schultz N, Loseva O, Egevad L, Granfors T, Helleday T. Castration therapy results in decreased Ku70 levels in prostate cancer. Clin Cancer Res 2013; 19:1547-56. [PMID: 23349316 DOI: 10.1158/1078-0432.ccr-12-2795] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Neoadjuvant castration improves response to radiotherapy of prostate cancer. Here, we determine whether castration therapy impairs nonhomologous end-joining (NHEJ) repair of DNA double-strand breaks (DSB) by downregulating Ku70 protein expression. EXPERIMENTAL DESIGN Twenty patients with locally advanced prostate cancer were enrolled, and 6 to 12 needle core biopsy specimens were taken from the prostate of each patient before treatment. Bilateral orchidectomy was conducted in eight patients and 12 patients were treated with a GnRH agonist. After castration, two to four similar biopsies were obtained, and the levels of Ku70 and γ-H2AX foci were determined by immunofluorescence in verified cancer tissues. RESULTS We observed that the androgen receptor binds directly to Ku70 in prostate tissue. We also found a reduction of the Ku70 protein levels in the cell nuclei in 12 of 14 patients (P < 0.001) after castration. The reduction in Ku70 expression correlated significantly with decreased serum prostate-specific antigen (PSA) levels after castration, suggesting that androgen receptor activity regulates Ku70 protein levels in prostate cancer tissue. Furthermore, a significant correlation between the reductions of Ku70 after castration versus changes induced of castration of γ-H2AX foci could be seen implicating a functional linkage of decreased Ku70 levels and impaired DNA repair. CONCLUSIONS Castration therapy results in decreased levels of the Ku70 protein in prostate cancer cells. Because the Ku70 protein is essential for the NHEJ repair of DSBs and its downregulation impairs DNA repair, this offers a possible explanation for the increased radiosensitivity of prostate cancer cells following castration.
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Affiliation(s)
- Firas L T Al-Ubaidi
- Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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Li W, Yang M, Zheng Y. Fragmentation investigation of seven arylnaphthalide lignans using liquid chromatography/tandem quadrupole time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:950-956. [PMID: 22396032 DOI: 10.1002/rcm.6189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RATIONALE The combination of fragmentation patterns in positive and negative ion modes could be helpful in understanding the structural features of these arylnaphthalide lignans. METHODS Fragmentation patterns of seven arylnaphthalide lignans were investigated using liquid chromatography/tandem time-of-flight mass spectrometry, and their fragmentation pathways were comprehensively characterized. RESULTS In the positive ion mode, the cleavage of the C-1'-C-7' bond was the most characteristic fragmentation pattern of the lignans with both 2'-hydroxy and 4',5'-methylenedioxy groups on the B ring. Arylnaphthalide lignans containing a methylenedioxy group on the B ring could lose C(2)H(2)O(2) easily. The characteristic mass losses of 58 Da (C(2)H(2)O(2)) could indicate the presence of a methylenedioxy group on the B ring. In the negative ion mode, the type of substituents at C-7 could affect the cleavage pattern of the lactone ring. CONCLUSIONS In search for new compounds, and also in quality control, there is a need to have reliable methodology for the analysis of arylnaphthalide lignans. These results should be useful in the analysis of natural products with similar substructures from Chinese herbs in the future.
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Affiliation(s)
- Wei Li
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, PR China
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Liu HS, Ke CS, Cheng HC, Huang CYF, Su CL. Curcumin-Induced Mitotic Spindle Defect and Cell Cycle Arrest in Human Bladder Cancer Cells Occurs Partly through Inhibition of Aurora A. Mol Pharmacol 2011; 80:638-46. [DOI: 10.1124/mol.111.072512] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Kao HH, Wu CJ, Won SJ, Shin JW, Liu HS, Su CL. Kinase gene expression and subcellular protein expression pattern of protein kinase C isoforms in curcumin-treated human hepatocellular carcinoma Hep 3B cells. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2011; 66:136-142. [PMID: 21556896 DOI: 10.1007/s11130-011-0228-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Curcumin, a yellow component of turmeric or curry powder, has been demonstrated to exhibit anti-carcinogenic effects in vitro, in vivo, and in human clinical trials. One of its molecular targets is protein kinase C (PKC) which has been reported to play essential roles in apoptosis, cell proliferation, and carcinogenesis. In this study, PKC mRNA expression was significantly inhibited in curcumin-treated human hepatocellular carcinoma (HCC) Hep 3B cells identified using a kinase cDNA microarray. Furthermore, curcumin decreased total protein expression of all PKCs in a time-related manner by immunoblotting of whole cell lysates, nuclear, membrane, and cytosolic fractions. In cytosolic fraction, the expression of PKC-α was totally inhibited by curcumin. In contrast, the expression levels of PKC-ζ and -μ were dramatically increased. Increases in expression of PKC-δ and PKC-ζ in the membrane and nucleus, and PKC-ι in the membrane were detected. In summary, the changes in expression and distribution of subcellular PKC isoforms in curcumin-treated Hep 3B cells suggest possible PKC-associated anti-tumor mechanisms of curcumin and provide alternative therapies for human HCC.
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Affiliation(s)
- Hsin-Hsin Kao
- Department of Food Nutrition, Chung Hwa University of Medical Technology, No. 89, Wen-Hwa 1st Street, Jen-Te, Tainan, 717, Taiwan
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Su CL, Chen FN, Won SJ. Involvement of apoptosis and autophagy in reducing mouse hepatoma ML-1 cell growth in inbred BALB/c mice by bacterial fermented soybean products. Food Chem Toxicol 2011; 49:17-24. [PMID: 20732379 DOI: 10.1016/j.fct.2010.08.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2009] [Revised: 04/21/2010] [Accepted: 08/17/2010] [Indexed: 01/27/2023]
Abstract
Followed by the results of our previous in vitro report (Food Chem. Toxicol., 2007), the efficacy of the soybean fermentation products containing live bacteria (SCB) was demonstrated using a syngeneic animal model. Murine HBV-related hepatoma ML-1 cells, derived from inbred animals and tumorigenic in BALB/c mice, were implanted subcutaneously to the flank of BALB/c mice on day 0. Three days after implantation, SCB (1.0 or 1.3 ml/mouse/day) or vehicle (water) was orally administrated daily until day 60. The results indicate that SCB significantly reduced (P<0.05) the volumes and weights of tumors during the experimental periods. Examination using TUNEL staining on section of tumors revealed apoptotic phenomenon of nuclear DNA double-strand breaks in the groups of mice received SCB. Immunohistochemistry further revealed an autophagic LC3-II punctate pattern. Of note, SCB induced autophagy in the absence or presence of apoptosis, whereas, apoptosis was observed only in combination with autophagy. In vitro study using autophagy inhibitor indicated that the induction of autophagy promoted apoptosis. These data imply that the suppression in tumor volumes and tumor weights by oral administration of SCB was due to the induction of apoptotic and autophagic cell death, which suggests therapeutic potential of SCB on HBV-related HCC.
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Affiliation(s)
- Chun-Li Su
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei, Taiwan
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Lee JC, Su CL, Chen LL, Won SJ. Formosanin C-induced apoptosis requires activation of caspase-2 and change of mitochondrial membrane potential. Cancer Sci 2009; 100:503-13. [PMID: 19154411 PMCID: PMC11159299 DOI: 10.1111/j.1349-7006.2008.01057.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Formosanin C is a pure compound isolated from Paris formosana Hayata (Liliaceae). The antitumor efficacy of formosanin C has been observed in cultured cells and animal systems. However, the molecular mechanisms of formosanin C remain unknown. The results of the present study indicate that formosanin C induced apoptosis of HT-29 cells characterized by exposure of phosphatidylserine, accumulation of cells at the sub-G(1) phase, fragmentation of DNA, and change of nuclear morphology in a time- and dose-related manner. The apoptotic signaling cascades may proceed via proteolytic activation of caspase-2, change of mitochondrial membrane potential (Deltapsi(m)), release of cytochrome c and second mitochondria-derived activator of caspase/direct IAP binding protein with low pI (Smac/DIABLO), activation of caspase-9 and -3, and cleavage of poly(ADP-ribose) polymerase (PARP). Increase in apoptosis-inducing factor and endonuclease G expressions in nuclei, and increase in Bax and Bak expressions and decrease in Bcl-X(L) expression on mitochondria were also observed in formosanin C-treated HT-29 cells. Attenuation of formosanin C-induced change of Deltapsi(m) by caspase-2 inhibitor (Z-VDVAC) implies that caspase-2 acts upstream of the mitochondria. Blockage of formosanin C-induced apoptotic process by using either permeability transition pore inhibitor (cyclosporine A) or caspase-9 inhibitor (Z-LEHD) demonstrates the necessity of mitochondria and caspase-9 in formosanin C-induced apoptosis of HT-29 cells. Taken together, the apoptotic mechanism of formosanin C in human colorectal cancer HT-29 cells involves activation of caspase-2 and the dysfunction of mitochondria.
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Affiliation(s)
- Jenq-Chang Lee
- Department of Surgery, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Kavitha C, Nambiar M, Ananda Kumar C, Choudhary B, Muniyappa K, Rangappa KS, Raghavan SC. Novel derivatives of spirohydantoin induce growth inhibition followed by apoptosis in leukemia cells. Biochem Pharmacol 2009; 77:348-63. [DOI: 10.1016/j.bcp.2008.10.018] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 09/30/2008] [Accepted: 10/16/2008] [Indexed: 11/30/2022]
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Su CL, Lin TY, Lin CN, Won SJ. Involvement of caspases and apoptosis-inducing factor in bufotalin-induced apoptosis of Hep 3B cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:55-61. [PMID: 19055367 DOI: 10.1021/jf802769g] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Bufotalin is one of the bufadienolides isolated from Formosan Ch'an Su, which is made of the skin and parotid glands of toads. Ingestion of toad venom results in severe morbidity and high mortality. Although Ch'an Su is clinically toxic, it has been used as an important traditional Chinese medicine for heart failure and pains. In this study, bufotalin-induced apoptosis in human hepatocellular carcinoma Hep 3B cells was investigated. The results indicate that externalization of phosphatidylserine, accumulation of sub-G(1) cells, fragmentation of DNA, and formation of apoptotic bodies were observed in bufotalin-treated Hep 3B cells. The signaling pathway might be via the activation of caspase-8, increase in mitochondrial tBid, disruption of mitochondrial membrane potential, and translocation of apoptosis-inducing factor (AIF). Active caspase-8 might activate caspase-9 and caspase-3 leading to the cleavage of nuclear PARP. Presence of AIF and cleaved PARP in the nuclei might lead to DNA fragmentation. Caspase-8 inhibitor (Z-IETD) or wide-ranging caspase inhibitor (Z-VAD) significantly suppressed the bufotalin-induced apoptosis, while the anti-Fas neutralization antibody had no effect. These data suggest that bufotalin-induced apoptosis in Hep 3B cells might involve caspases and AIF.
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Affiliation(s)
- Chun-Li Su
- Department of Nursing, Chang Jung Christian University, Gueiren, Tainan 711, Taiwan
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Lautié E, Quintero R, Fliniaux MA, Villarreal ML. Selection methodology with scoring system: application to Mexican plants producing podophyllotoxin related lignans. JOURNAL OF ETHNOPHARMACOLOGY 2008; 120:402-412. [PMID: 18930796 DOI: 10.1016/j.jep.2008.09.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2008] [Revised: 07/20/2008] [Accepted: 09/10/2008] [Indexed: 05/26/2023]
Abstract
As most anticancer drugs are derived from natural sources, the screening of local medicinal flora should be considered a primary step in the search for new sources for antineoplastic agents. In Mexico, more than 6000 medicinal plant species are used for the treatment of various diseases, including cancer. A multifactorial plant selection method, employing various criteria was designed and applied in order to select alternative sources of podophyllotoxin lignan analogues. For each criterion (chemotaxonomy, traditional medical uses and published scientific data), an arbitrary score system was ascribed to the species and the sum of these enabled us to compare potential candidates. The resulting selected plants were tested for cytotoxic activity and the compounds responsible for this activity were evaluated by liquid chromatography-mass spectroscopy (LC-MS). Around 50 species from the Mexican flora were initially considered. From these, six species were selected by referring to the results from the scoring system and these were then collected. Three extracts were evaluated as being highly cytotoxic against three different cancer cell lines. Finally, podophyllotoxin-like lignans could be identified by observing the fragmentation pattern on mass spectra, obtained from the LC-MS in two species: Linum scabrellum and Hyptis suaveolens.
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Affiliation(s)
- E Lautié
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
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Chiruvella KK, Kari V, Choudhary B, Nambiar M, Ghanta RG, Raghavan SC. Methyl angolensate, a natural tetranortriterpenoid induces intrinsic apoptotic pathway in leukemic cells. FEBS Lett 2008; 582:4066-76. [DOI: 10.1016/j.febslet.2008.11.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2008] [Revised: 11/01/2008] [Accepted: 11/04/2008] [Indexed: 10/21/2022]
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47
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Lee JC, Won SJ, Chao CL, Wu FL, Liu HS, Ling P, Lin CN, Su CL. Morusin induces apoptosis and suppresses NF-kappaB activity in human colorectal cancer HT-29 cells. Biochem Biophys Res Commun 2008; 372:236-42. [PMID: 18485277 DOI: 10.1016/j.bbrc.2008.05.023] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2008] [Accepted: 05/06/2008] [Indexed: 10/22/2022]
Abstract
Morusin is a pure compound isolated from root bark of Morusaustralis (Moraceae). In this study, we demonstrated that morusin significantly inhibited the growth and clonogenicity of human colorectal cancer HT-29 cells. Apoptosis induced by morusin was characterized by accumulation of cells at the sub-G(1) phase, fragmentation of DNA, and condensation of chromatin. Morusin also inhibited the phosphorylation of IKK-alpha, IKK-beta and IkappaB-alpha, increased expression of IkappaB-alpha, and suppressed nuclear translocation of NF-kappaB and its DNA binding activity. Dephosphorylation of NF-kappaB upstream regulators PI3K, Akt and PDK1 was also displayed. In addition, activation of caspase-8, change of mitochondrial membrane potential, release of cytochrome c and Smac/DIABLO, and activation of caspase-9 and -3 were observed at the early time point. Downregulation in the expression of Ku70 and XIAP was exhibited afterward. Caspase-8 or wide-ranging caspase inhibitor suppressed morusin-induced apoptosis. Therefore, the antitumor mechanism of morusin in HT-29 cells may be via activation of caspases and inhibition of NF-kappaB.
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Affiliation(s)
- Jenq-Chang Lee
- Department of Surgery, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
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48
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Liu G, Wu J, Si J, Wang J, Yang M. Complete assignments of 1H and 13C NMR data for three new arylnaphthalene lignan from Justicia procumbens. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2008; 46:283-286. [PMID: 18236441 DOI: 10.1002/mrc.2175] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Three new arylnaphthalene lignans, named neojusticin C (1), procumbenoside C (2) and procumbenoside D (3), have been isolated from the whole plant of Justicia procumbens, together with three known ones, justicidinoside B (4), justicidinoside C (5), and diphyllin-1-O-beta-D-apiofuranoside (6). The complete assignments of 1H and 13C NMR data for three new lignans were first obtained by means of 2D NMR techniques, including HSQC and HMBC.
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Affiliation(s)
- Guorui Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, P.R. China
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49
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Lu YH, Wei BL, Ko HH, Lin CN. DNA strand-scission by phloroglucinols and lignans from heartwood of Garcinia subelliptica Merr. and Justicia plants. PHYTOCHEMISTRY 2008; 69:225-33. [PMID: 17686498 DOI: 10.1016/j.phytochem.2007.06.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2006] [Revised: 04/12/2007] [Accepted: 06/20/2007] [Indexed: 05/16/2023]
Abstract
Five 2,4,6-prenylated phloroglucinols, garcinielliptones HA (1), HB (2), HC (3), HD (4) and HE (5), were isolated from the heartwood of Garcinia subelliptica Merr. Their structures, including relative configurations, were elucidated by means of spectroscopic data analysis. The ability of phloroglucinols, 1-5 and lignans, tuberculatin (8), justicidin A (9), procumbenoside A (10) and ciliatosides A (11) and B (12), isolated from Justicia ciliata and Justicia procumbens, to induce DNA-cleavage activity was examined using pBR322, a supercoiled, covalently closed circular DNA, and it was analyzed by agarose gel electrophoresis. In the presence of Cu (II), compounds 3, 8, 10 and 11 caused significant breakage of supercoiled plasmid pBR322. The products were relaxed circles with no detectable linear forms. In the Cu(II)-mediated DNA damage of 3 and selective compound 8, Cu(I) was shown not to be an essential intermediate by using the Cu(I)-specific sequestering reagent neocuproine.
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Affiliation(s)
- Yi-Huang Lu
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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50
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Su CL, Wu CJ, Chen FN, Wang BJ, Sheu SR, Won SJ. Supernatant of bacterial fermented soybean induces apoptosis of human hepatocellular carcinoma Hep 3B cells via activation of caspase 8 and mitochondria. Food Chem Toxicol 2007; 45:303-14. [PMID: 17030378 DOI: 10.1016/j.fct.2006.07.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2005] [Revised: 07/21/2006] [Accepted: 07/25/2006] [Indexed: 11/23/2022]
Abstract
SC-1, the aqueous phase of soybean fermentation products by bacteria (Bacillus subtilis and Bacillus brevis), significantly inhibited the growth and clonogenesity of human hepatocellular (Hep 3B), mouse hepatocellular (ML-1), and human colorectal (HCT 116 and HT-29) carcinoma cells. Cytotoxicity of SC-1 in Hep 3B cells was through the process of apoptosis characterizing by increase in cell population of sub-G(1) phase, fragmentation of DNA, and change of nuclear morphology. Treatment of Hep 3B cells with SC-1 activated caspase 8 and caspase 3. Elevation of nuclear DNA fragmentation factor 40 (DFF40) and cleavage form of poly(ADP-ribose) polymerase (PARP) were also observed. SC-1 also activated intrinsic pathway via increase of pro-apoptotic (tBid, Bak and Bax) and decrease of anti-apoptotic (Bcl-2 and Bcl-x(L)) proteins on mitochondria, disruption of mitochondrial membrane potential, release of cytochrome c and Smac (second mitochondria-derived activator of caspase/direct IAP binding protein with low PI) from mitochondria, and activation of caspase 9. Inhibition on protein expression of Ku70 in cytosol and cyclooxygenase (COX)-2, but not COX-1, in whole cell lystes were revealed in SC-1-treated Hep 3B cells. These results suggest caspase 8, Ku70 and mitochondria are involved in the antitumor mechanism of SC-1 in Hep 3B cells.
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Affiliation(s)
- Chun-Li Su
- Department of Nursing, Chang Jung Christian University, Tainan 711, Taiwan, ROC
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