1
|
Balakrishnan N, Haribabu J, Dharmasivam M, Jayadharini JP, Anandakrishnan D, Swaminathan S, Bhuvanesh N, Echeverria C, Karvembu R. Influence of Indole- N Substitution of Thiosemicarbazones in Cationic Ru(II)(η 6-Benzene) Complexes on Their Anticancer Activity. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Nithya Balakrishnan
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tiruchirappalli 620015, Tamil Nadu, India
| | - Jebiti Haribabu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tiruchirappalli 620015, Tamil Nadu, India
- Facultad de Medicina, Universidad de Atacama, Los Carreras 1579, 1532502 Copiapo, Chile
| | - Mahendiran Dharmasivam
- Department of Chemistry, Griffith Institute for Drug Discovery, Griffith University, Nathan, Brisbane, Queensland 4111, Australia
| | | | - Dhanabalan Anandakrishnan
- Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600025, India
| | - Srividya Swaminathan
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tiruchirappalli 620015, Tamil Nadu, India
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Cesar Echeverria
- Facultad de Medicina, Universidad de Atacama, Los Carreras 1579, 1532502 Copiapo, Chile
| | - Ramasamy Karvembu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tiruchirappalli 620015, Tamil Nadu, India
| |
Collapse
|
2
|
The Use of Ellagic Acid and Annona Muricata Improves Semen Quality in Men with High-Risk Papillomavirus Infection. J Clin Med 2022; 11:jcm11164691. [PMID: 36012935 PMCID: PMC9409659 DOI: 10.3390/jcm11164691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/03/2022] [Accepted: 08/09/2022] [Indexed: 11/30/2022] Open
Abstract
Background: Few data are currently available on the treatment of patients with HPV infection. In particular, there is no agreement on the use of antioxidants in these patients. Ellagic acid and annona muricata appear to improve HPV clearance in infected women. However, it is presently unknown whether they could enhance the clearance of HPV infection in infertile male patients. Aim: To evaluate the effects of a commercially available combined compound containing ellagic acid and annona muricata on semen quality in patients with documented papillomavirus (HPV) infection, and on the frequency of HPV DNA detection in seminal fluid after treatment. In addition, anti-sperm antibodies and the percentage of spermatozoa with fragmented DNA were evaluated. Materials and methods: This was a retrospective case-control study including patients attending our center for infertility. Fifty selected patients who were positive for high risk (HR)-HPV with available semen analysis results were consecutively enrolled. Patients were classified into two groups, according to the clinician’s decision to either administer ellagic acid 100 mg and annona muricata 100 mg (combined tablet formulation) for a period of three months (Group A; 25 patients), or to re-evaluate HPV DNA after a period of active surveillance only (protected sexual intercourse) (Group B; 25 patients). Results: Group A patients had a mean age of 31.0 ± 11.0 years, while Group B was 33.0 ± 8.0 years old (p > 0.05). After three months of treatment with ellagic acid and annona muricata, all conventional seminal parameters improved more significantly in Group A than in Group B patients: sperm concentration = 45 mil/mL vs. 20 mil/mL (p < 0.05); sperm progressive motility = 45% vs. 18% (p < 0.05); and normal sperm morphology = 18% vs. 6% (p < 0.05). After the treatment, the frequency of persistence of HPV DNA in the seminal fluid was significantly lower in Group A patients compared to those in Group B (12/25 = 48% vs. 22/25 = 88%; p < 0.05). Finally, after 3 months, Group A showed a significant reduction in anti-sperm antibodies and in the percentage of spermatozoa with fragmented DNA. Conclusion: The results of this study demonstrate, for the first time, the effects of a commercially available combined compound containing ellagic acid and annona muricata on semen quality in patients with HR-HPV infection, and that this therapy is also associated with a significant reduction in the persistence of HPV DNA in the seminal fluid.
Collapse
|
3
|
Ceci C, Graziani G, Faraoni I, Cacciotti I. Strategies to improve ellagic acid bioavailability: from natural or semisynthetic derivatives to nanotechnological approaches based on innovative carriers. NANOTECHNOLOGY 2020; 31:382001. [PMID: 32380485 DOI: 10.1088/1361-6528/ab912c] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ellagic acid (EA) is a polyphenolic compound whose dietary consumption is mainly associated with the intake of red fruits, including pomegranates, strawberries, blackberries, blackcurrants, raspberries, grapes or dried fruits, like walnuts and almonds. A number of studies indicate that EA exerts health-beneficial effects against several chronic pathologies associated with oxidative damage, including different kinds of cancer, cardiovascular and neurodegenerative diseases. Furthermore, EA possesses wound-healing properties, antibacterial and antiviral effects, and acts as a systemic antioxidant. However, clinical applications of this polyphenol have been hampered and prevented by its poor water solubility (9.7 ± 3.2 μg ml-1 in water) and pharmacokinetic profile (limited absorption rate and plasma half-life <1 h after ingestion of pomegranate juice), properties due to the chemical nature of the organic heterotetracyclic compound. Little has been reported on efficient strategies to enhance EA poor oral bioavailability, including chemical structure modifications, encapsulation within nano-microspheres to be used as carriers, and molecular dispersion in polymer matrices. In this review we summarize the experimental approaches investigated so far in order to improve EA pharmacokinetics, supporting the hypothesis that enhancement in EA solubility is a feasible route for increasing its oral absorption.
Collapse
Affiliation(s)
- Claudia Ceci
- Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1 00133, Rome, Italy
| | | | | | | |
Collapse
|
4
|
Gu Y, Hou W, Shen XY, Zhuo SX, Zhang HR, Ji MH, Chen MJ, Guo YY. CYP2C9, a Metabolic CYP450s Enzyme, Plays Critical Roles in Activating Ellagic Acid in Human Intestinal Epithelial Cells. Med Sci Monit 2020; 26:e923104. [PMID: 32453717 PMCID: PMC7271682 DOI: 10.12659/msm.923104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background The metabolic processing of ellagic acid (EA) by cytochrome P450s (CYP450s) expressed in the intestines is unclear. This study aimed to investigate the effects of CYP450s that are highly expressed in HIEC cells on metabolic activity of EA. Material/Methods HIEC cell models expressing 2B6, 2C9, 2D6, and 3A4 were generated by stably transfecting with CYP450 genes using a lentivirus system. PCR and Western blot assay were used to detect expression of CYP450s. Cell Counting Kit-8 (CCK-8) assay was used to examine the cytotoxic effect of EA on CYP450s-expressing HIEC cells. Flow cytometry was employed to evaluate apoptosis of CYP450s-expressing HIEC cells after addition of EA. Metabolic clearance rate of EA in vitro by the constructed HIEC cell models was measured using UPLC-MS method. Results CYP450s expression HIEC cell models, including CYP2B6, CYP2C9, CYP2D6, and CYP3A4, were successfully established. EA treatment at different concentrations (10 μg/mL and 50 μg/mL) remarkably decreased cell viability of HIEC cells expressing CYP2C9 compared to the untreated control (p<0.01), in a concentration-dependent and time-dependent manner. Expression of CYP2C9 significantly increased the apoptosis rate of HIEC cells treated with EA compared to that in HIEC cells without any CYP450s expression (p<0.01). The clearance rate of EA in CYP2B6-expressing (p<0.05) and CYP2C9-expressing (p<0.001) HIEC cell models was remarkably reduced after 120 min. Conclusions Ellagic acid was effectively activated by CYP2C9 in HIEC cells and caused cytotoxicity and apoptosis of HIEC cells. Therefore, CYP2C9 is main metabolic enzyme of EA when compared to other CYP450 HIEC cell models.
Collapse
Affiliation(s)
- Yang Gu
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
| | - Wei Hou
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
| | - Xin-Yu Shen
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
| | - Shi-Xuan Zhuo
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
| | - Hao-Ran Zhang
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
| | - Ming-Hui Ji
- School of Nursing, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Mei-Juan Chen
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
| | - Yuan-Yuan Guo
- School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
| |
Collapse
|
5
|
Gomez-Cadena A, Barreto A, Fioretino S, Jandus C. Immune system activation by natural products and complex fractions: a network pharmacology approach in cancer treatment. Cell Stress 2020; 4:154-166. [PMID: 32656498 PMCID: PMC7328673 DOI: 10.15698/cst2020.07.224] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Natural products and traditional herbal medicine are an important source of alternative bioactive compounds but very few plant-based preparations have been scientifically evaluated and validated for their potential as medical treatments. However, a promising field in the current therapies based on plant-derived compounds is the study of their immunomodulation properties and their capacity to activate the immune system to fight against multifactorial diseases like cancer. In this review we discuss how network pharmacology could help to characterize and validate natural single molecules or more complex preparations as promising cancer therapies based on their multitarget capacities.
Collapse
Affiliation(s)
- Alejandra Gomez-Cadena
- Department of Pathology and Immunology, Targeting of Cytokine Secreting Lymphocyte group, Geneva University, Geneva, Switzerland.,Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Switzerland.,Departamento de Microbiología, Grupo de Inmunobiología y Biología Celular, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Alfonso Barreto
- Departamento de Microbiología, Grupo de Inmunobiología y Biología Celular, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Susana Fioretino
- Departamento de Microbiología, Grupo de Inmunobiología y Biología Celular, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Camilla Jandus
- Department of Pathology and Immunology, Targeting of Cytokine Secreting Lymphocyte group, Geneva University, Geneva, Switzerland.,Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Switzerland
| |
Collapse
|
6
|
Haribabu J, Balachandran C, Tamizh MM, Arun Y, Bhuvanesh NSP, Aoki S, Karvembu R. Unprecedented formation of palladium(II)-pyrazole based thiourea from chromone thiosemicarbazone and [PdCl 2(PPh 3) 2]: Interaction with biomolecules and apoptosis through mitochondrial signaling pathway. J Inorg Biochem 2020; 205:110988. [PMID: 31981770 DOI: 10.1016/j.jinorgbio.2019.110988] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 12/30/2019] [Accepted: 12/30/2019] [Indexed: 10/25/2022]
Abstract
Two novel pyrazole based thiourea palladium(II) complexes, [PdCl(PPh3)(C9H8NO2S-pz)] (1) and [PdCl(PPh3)(C14H10NO2S-pz)] (2) [pz = pyrazole (C3H2N2)] have been obtained unexpectedly from chromone thiosemicarbazones (L1 and L2) and [PdCl2(PPh3)2]. The compounds have been fully characterized by physicochemical studies. The single crystal X-ray diffraction and spectral studies revealed square planar geometry for the complexes. The conversion of chromone thiosemicarbazone into pyrazole based thiourea might have happened through coordination to palladium(II) ion after enolization, Michael addition and ring opening followed by cyclization. To the best of our knowledge, this is the first report for the conversion of chromone thiosemicarbazone into pyrazole based thiourea moiety. Plausible mechanism was proposed based on the spectroscopic studies. Calf thymus (CT) DNA binding of the compounds was explored using various spectroscopic and molecular docking methods. DNA cleavage studies suggested that complexes 1 and 2 had the capacity to cleave the supercoiled DNA (pUC19) to its naked form. In vitro cytotoxic property of the ligands and complexes has been evaluated against three human cancer cells such as A549, HepG-2 and U937. Complex 2 exhibited potent cytotoxic activity against HepG-2 cells with the IC50 value of 10.4 μM. In addition, mechanistic studies showed that complex 2 induced apoptosis through mitochondrial signaling pathway in HepG-2 cells. Beneficially, complex 2 showed less toxicity against human lung (IMR90) normal cells and hence it emerges as a potential candidate for further studies.
Collapse
Affiliation(s)
- Jebiti Haribabu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India; Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Chandrasekar Balachandran
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Manoharan Muthu Tamizh
- Department of Chemistry, Siddha Central Research Institute, Central Council for Research in Siddha, Arumbakkam, Chennai 600106, India
| | - Yuvaraj Arun
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Chennai 600020, India
| | | | - Shin Aoki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan; Research Institute of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Ramasamy Karvembu
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India.
| |
Collapse
|
7
|
Ceci C, Lacal PM, Tentori L, De Martino MG, Miano R, Graziani G. Experimental Evidence of the Antitumor, Antimetastatic and Antiangiogenic Activity of Ellagic Acid. Nutrients 2018; 10:E1756. [PMID: 30441769 PMCID: PMC6266224 DOI: 10.3390/nu10111756] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/11/2018] [Accepted: 11/12/2018] [Indexed: 12/24/2022] Open
Abstract
Ellagic acid (EA) is a naturally occurring polyphenolic compound endowed with strong antioxidant and anticancer properties that is present in high quantity in a variety of berries, pomegranates, and dried fruits. The antitumor activity of EA has been mostly attributed to direct antiproliferative and apoptotic effects. Moreover, EA can inhibit tumour cell migration, extra-cellular matrix invasion and angiogenesis, all processes that are crucial for tumour infiltrative behaviour and the metastatic process. In addition, EA may increase tumour sensitivity to chemotherapy and radiotherapy. The aim of this review is to summarize the in vitro and in vivo experimental evidence supporting the anticancer activity of pure EA, its metabolites, and EA-containing fruit juice or extracts in a variety of solid tumour models. The EA oral administration as supportive therapy to standard chemotherapy has been recently evaluated in small clinical studies with colorectal or prostate cancer patients. Novel formulations with improved solubility and bioavailability are expected to fully develop the therapeutic potential of EA derivatives in the near future.
Collapse
Affiliation(s)
- Claudia Ceci
- Department of Systems Medicine, University of Rome Tor Vergata, 00173 Rome, Italy.
| | - Pedro M Lacal
- Laboratory of Molecular Oncology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, 00167 Rome, Italy.
| | - Lucio Tentori
- Department of Systems Medicine, University of Rome Tor Vergata, 00173 Rome, Italy.
| | - Maria Gabriella De Martino
- Laboratory of Medicinal Chemistry, Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00173 Rome, Italy.
| | - Roberto Miano
- Urology Unit, Department of Surgical Sciences, University of Rome Tor Vergata, 00173 Rome, Italy.
| | - Grazia Graziani
- Department of Systems Medicine, University of Rome Tor Vergata, 00173 Rome, Italy.
| |
Collapse
|
8
|
Li X, Dong W, Nalin AP, Wang Y, Pan P, Xu B, Zhang Y, Tun S, Zhang J, Wang LS, He X, Caligiuri MA, Yu J. The natural product chitosan enhances the anti-tumor activity of natural killer cells by activating dendritic cells. Oncoimmunology 2018; 7:e1431085. [PMID: 29872557 DOI: 10.1080/2162402x.2018.1431085] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/17/2018] [Accepted: 01/18/2018] [Indexed: 10/18/2022] Open
Abstract
Natural products comprise an important class of biologically active molecules. Many of these compounds derived from natural sources exhibit specific physiologic or biochemical effects. An example of a natural product is chitosan, which is enriched in the shells of certain seafood that are frequently consumed worldwide. Like other natural products, chitosan has the potential for applications in clinical medicine and perhaps in cancer therapy. Toward this end, the immunomodulatory or anti-cancer properties of chitosan have yet to be reported. In this study, we discovered that chitosan enhanced the anti-tumor activity of natural killer (NK) cells by activating dendritic cells (DCs). In the presence of DCs, chitosan augmented IFN-γ production by human NK cells. Mechanistically, chitosan activated DCs to express pro-inflammatory cytokines such as interleukin (IL)-12 and IL-15, which in turn activated the STAT4 and NF-κB signaling pathways, respectively, in NK cells. Moreover, chitosan promoted NK cell survival, and also enhanced NK cell cytotoxicity against leukemia cells. Finally, a related in vivo study demonstrated that chitosan activated NK cells against B16F10 tumor cells in an immunocompetent syngeneic murine melanoma model. This effect was accompanied by in vivo upregulation of IL-12 and IL-15 in DCs, as well as increased IFN-γ production and cytolytic degranulation in NK cells. Collectively, our results demonstrate that chitosan activates DCs leading to enhanced capacity for immune surveillance by NK cells. We believe that our study has future clinical applications for chitosan in the prevention or treatment of cancer and infectious diseases.
Collapse
Affiliation(s)
- Xinxin Li
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA.,Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Wenjuan Dong
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Ansel P Nalin
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Yufeng Wang
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Pan Pan
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Bo Xu
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Yibo Zhang
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Steven Tun
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Jianying Zhang
- Center for Biostatistics, Department of Bioinformatics, The Ohio State University, Columbus, OH, USA
| | - Li-Shu Wang
- Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Xiaoming He
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA
| | - Michael A Caligiuri
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA.,The James Cancer Hospital and Solove Research Institute, Columbus, OH, USA
| | - Jianhua Yu
- The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA.,The James Cancer Hospital and Solove Research Institute, Columbus, OH, USA
| |
Collapse
|
9
|
Gong H, Zeng H, Zhou F, Li CJ. Rhodium(I)-Catalyzed Regiospecific Dimerization of Aromatic Acids: Two Direct CH Bond Activations in Water. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500220] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
10
|
Gong H, Zeng H, Zhou F, Li CJ. Rhodium(I)-Catalyzed Regiospecific Dimerization of Aromatic Acids: Two Direct CH Bond Activations in Water. Angew Chem Int Ed Engl 2015; 54:5718-21. [DOI: 10.1002/anie.201500220] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Indexed: 11/08/2022]
|
11
|
Ren Y, Lantvit D, Deng Y, Kanagasabai R, Gallucci JC, Ninh TN, Chai HB, Soejarto DD, Fuchs J, Yalowich JC, Yu J, Swanson SM, Kinghorn AD. Potent cytotoxic arylnaphthalene lignan lactones from Phyllanthus poilanei. JOURNAL OF NATURAL PRODUCTS 2014; 77:1494-504. [PMID: 24937209 PMCID: PMC4073661 DOI: 10.1021/np5002785] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Indexed: 05/19/2023]
Abstract
Two new (1 and 2) and four known arylnaphthalene lignan lactones (3-6) were isolated from different plant parts of Phyllanthus poilanei collected in Vietnam, with two further known analogues (7 and 8) being prepared from phyllanthusmin C (4). The structures of the new compounds were determined by interpretation of their spectroscopic data and by chemical methods, and the structure of phyllanthusmin D (1) was confirmed by single-crystal X-ray diffraction analysis. Several of these arylnaphthalene lignan lactones were cytotoxic toward HT-29 human colon cancer cells, with compounds 1 and 7-O-[(2,3,4-tri-O-acetyl)-α-L-arabinopyranosyl)]diphyllin (7) found to be the most potent, exhibiting IC50 values of 170 and 110 nM, respectively. Compound 1 showed activity when tested in an in vivo hollow fiber assay using HT-29 cells implanted in immunodeficient NCr nu/nu mice. Mechanistic studies showed that this compound mediated its cytotoxic effects by inducing tumor cell apoptosis through activation of caspase-3, but it did not inhibit DNA topoisomerase IIα activity.
Collapse
Affiliation(s)
- Yulin Ren
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Daniel
D. Lantvit
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Youcai Deng
- Division
of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ragu Kanagasabai
- Division
of Pharmacology, College of Pharmacy, The
Ohio State University, Columbus, Ohio 43210, United States
| | - Judith C. Gallucci
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United States
| | - Tran Ngoc Ninh
- Institute
of Ecology and Biological Resources, Vietnam
Academy of Science and Technology, Hoang
Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hee-Byung Chai
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Djaja D. Soejarto
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Department
of Botany, Field Museum of Natural History, Chicago, Illinois 60605, United States
| | - James
R. Fuchs
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jack C. Yalowich
- Division
of Pharmacology, College of Pharmacy, The
Ohio State University, Columbus, Ohio 43210, United States
| | - Jianhua Yu
- Division
of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
- Comprehensive
Cancer Center, The Ohio State University, Columbus, Ohio 43210, United States
| | - Steven M. Swanson
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - A. Douglas Kinghorn
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Tel: +1 614 247-8094. Fax: +1 614 247-8642. E-mail:
| |
Collapse
|
12
|
Antimicrobial and immunomodulating activities of hesperidin and ellagic acid against diarrheic Aeromonas hydrophila in a murine model. Life Sci 2013; 93:714-22. [DOI: 10.1016/j.lfs.2013.09.019] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 08/30/2013] [Accepted: 09/18/2013] [Indexed: 12/16/2022]
|