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Zhang X, Jiang X, Jiang S, Cai X, Yu S, Pei G. Schwann cells promote prevascularization and osteogenesis of tissue-engineered bone via bone marrow mesenchymal stem cell-derived endothelial cells. Stem Cell Res Ther 2021; 12:382. [PMID: 34233721 PMCID: PMC8261922 DOI: 10.1186/s13287-021-02433-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 06/06/2021] [Indexed: 12/18/2022] Open
Abstract
Background Tissue-engineered bone grafts (TEBGs) that undergo vascularization and neurotization evolve into functioning bone tissue. Previously, we verified that implanting sensory nerve tracts into TEBGs promoted osteogenesis. However, the precise mechanisms and interaction between seed cells were not explored. In this study, we hypothesized that neurotization may influence the osteogenesis of TEBGs through vascularization. Methods We cultured rat Schwann cells (SCs), aortic endothelial cells (AECs), and bone marrow-derived mesenchymal stem cells (BM-MSCs) and then obtained BM-MSC-derived induced endothelial cells (IECs) and induced osteoblasts (IOBs). IECs and AECs were cultured in an SC-conditioned medium (SC-CM) to assess proliferation, migration, capillary-like tube formation, and angiogenesis, and the vascular endothelial growth factor (VEGF) levels in the supernatants were detected. We established an indirect coculture model to detect the expression of nestin and VEGF receptors in IECs and tissue inhibitor of metalloproteinase (TIMP)-2 in SCs. Then, SCs, IECs, and IOBs were labeled and loaded into a β-tricalcium phosphate scaffold to induce prevascularization, and the scaffold was implanted into a 6-mm-long defect of rat femurs. Three groups were set up according to the loaded cells: I, SCs, and IECs (coculture for 3 days) plus IOBs; II, IECs (culture for 3 days) plus IOBs; III, IOBs. Nestin and TIMP-2 expression and osteogenesis of TEBGs were evaluated at 12 weeks post-implantation through histological and radiological assessments. Results We found that SC-CM promoted IEC proliferation, migration, capillary-like tube formation, and angiogenesis, but no similar effects were observed for AECs. IECs expressed nestin extensively, while AECs barely expressed nestin, and SC-CM promoted the VEGF secretion of IECs. In the coculture model, SCs promoted nestin and VEGF receptor expression in IECs, and IECs inhibited TIMP-2 expression in SCs. The promotion of prevascularized TEBGs by SCs and IECs in group I augmented new bone formation at 6 and 12 weeks. Nestin expression was higher in group I than in the other groups, while TIMP-2 expression was lower at 12 weeks. Conclusions This study demonstrated that SCs can promote TEBG osteogenesis via IECs and further revealed the related specific characteristics of IECs, providing preliminary cytological evidence for neurotization of TEBGs. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02433-3.
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Affiliation(s)
- Xinxin Zhang
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Chaoyang District, Beijing, 100021, China
| | - Xiaorui Jiang
- Department of Hand and Foot Orthopaedics, Yantai Yuhuangding Hospital, Qingdao University Medical College, Yantai, Shandong, China
| | - Shan Jiang
- Department of Clinical Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiyu Cai
- Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Shengji Yu
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Chaoyang District, Beijing, 100021, China.
| | - Guoxian Pei
- Southern University of Science and Technology Hospital, No. 6019 Liuxian Street, Xili Avenue, Nanshan District, Shenzhen, 518055, Guangdong, China.
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Liu W, Zhang C, Wang L, Huang X, Zhang J, He Y, Chen L, Li J. Successful reversal of ovarian hyperstimulation syndrome in a mouse model by rapamycin, an mTOR pathway inhibitor. Mol Hum Reprod 2020; 25:445-457. [PMID: 31329230 DOI: 10.1093/molehr/gaz033] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 06/02/2019] [Indexed: 01/20/2023] Open
Abstract
Ovarian hyperstimulation syndrome (OHSS) is a potentially life-threatening, iatrogenic complication of ovarian stimulation in assisted reproduction technology. This complex syndrome is characterised by enlarged ovaries with multiple corpora luteum, elevated sex steroid hormones in serum and increased capillary permeability. Until now, the pathogenesis of OHSS remains obscure, and no absolute strategy can fully prevent OHSS without any side effect on ovulation and clinical pregnancy. Using cultured human or mouse granulosa cells, our study revealed the time-dependent activation of the mTOR signaling pathway after human chorionic gonadotropin (hCG) treatment. The involvement of the mTOR signaling pathway was also observed in the development of OHSS in a mouse model. Selectively inhibiting mTOR signals by only two injections of rapamycin (2 mg/kg body weight), before or just after hCG treatment, significantly reduced vascular leakage and the severity of OHSS symptoms. Although ovarian angiogenesis was significantly inhibited, rapamycin could not decrease the elevated levels of vascular endothelial growth factor, IL-6 and IL-11 in OHSS ovaries. Further study showed the functional roles of the mTOR signaling pathway in the hyperstimulation-induced ovarian extracellular matrix remodeling as the expression of α2M, a broad proteolytic inhibitor in both ovary and serum, was dramatically decreased after rapamycin treatment. Since a single injection of rapamycin during superovulation had no side effects on ovulation and early embryonic development, we propose rapamycin may be a good candidate to lower and prevent the risk of OHSS in the future.
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Affiliation(s)
- Wenwen Liu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Chi Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Lu Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Xuan Huang
- Reproductive Medical Center of Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China
| | - Jing Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yuanlin He
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Li Chen
- Reproductive Medical Center of Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210002, China
| | - Jing Li
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu 210029, China
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Adeniyi A, Asase A, Ekpe PK, Asitoakor BK, Adu-Gyamfi A, Avekor PY. Ethnobotanical study of medicinal plants from Ghana; confirmation of ethnobotanical uses, and review of biological and toxicological studies on medicinal plants used in Apra Hills Sacred Grove. J Herb Med 2018. [DOI: 10.1016/j.hermed.2018.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Ni S, Li C, Xu N, Liu X, Wang W, Chen W, Wang Y, van Wijnen AJ. Follistatin‐like protein 1 induction of matrix metalloproteinase 1, 3 and 13 gene expression in rheumatoid arthritis synoviocytes requires MAPK, JAK/STAT3 and NF‐κB pathways. J Cell Physiol 2018; 234:454-463. [DOI: 10.1002/jcp.26580] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 03/07/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Su Ni
- Laboratory of Clinical OrthopedicsThe Affiliated Changzhou No.2 People's Hospital With Nanjing Medical UniversityChangzhouChina
| | - Chenkai Li
- Laboratory of Clinical OrthopedicsThe Affiliated Changzhou No.2 People's Hospital With Nanjing Medical UniversityChangzhouChina
| | - Nanwei Xu
- Department of OrthopedicsThe Affiliated Changzhou No.2 People's Hospital With Nanjing Medical UniversityChangzhouChina
| | - Xi Liu
- Department of RheumatologyThe First People's Hospital of ChangzhouChangzhouChina
| | - Wei Wang
- Department of Orthopedics, Wuhan Puai Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Wenyang Chen
- Laboratory of Clinical OrthopedicsThe Affiliated Changzhou No.2 People's Hospital With Nanjing Medical UniversityChangzhouChina
| | - Yuji Wang
- Laboratory of Clinical OrthopedicsThe Affiliated Changzhou No.2 People's Hospital With Nanjing Medical UniversityChangzhouChina
- Department of OrthopedicsThe Affiliated Changzhou No.2 People's Hospital With Nanjing Medical UniversityChangzhouChina
| | - Andre J. van Wijnen
- Department of Orthopedic Surgery and Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
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Lumlerdkij N, Tantiwongse J, Booranasubkajorn S, Boonrak R, Akarasereenont P, Laohapand T, Heinrich M. Understanding cancer and its treatment in Thai traditional medicine: An ethnopharmacological-anthropological investigation. JOURNAL OF ETHNOPHARMACOLOGY 2018; 216:259-273. [PMID: 29409982 DOI: 10.1016/j.jep.2018.01.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/23/2018] [Accepted: 01/24/2018] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Thai traditional medicine (TTM) is widely practiced in Thailand and continues to gain importance in cancer management, but little is known about the TTM practitioners' emic concepts and practice. AIM OF THE STUDY With this study we firstly aim to document the practice of cancer treatment and prevention by TTM practitioners and, secondly, to evaluate how such traditional concepts and practices are correlated with biomedical ones. This in turn can form the basis for developing novel strategies for designing pharmacological experiments and longer term strategies to develop TTM practice. METHODS Semi-structured interviews with 33 TTM practitioners were performed in five provinces in different regions of Thailand. The following information were recorded; basic information of informants, descriptions of cancer (mareng in Thai), causes, diagnosis, treatment, and prevention. Plants used in the treatment and prevention of mareng were also collected. RESULTS Using an in depth ethnographic approach four representative case studies to assist in a better understanding of the characteristics of mareng, its diagnosis, treatment, and prevention are reported here. Five characteristics of mareng - waste accumulation (khong sia), chronic illnesses (krasai), inflammation (kan aksep), bad blood (luead) and lymph (namlueang), and the imbalance of four basic elements (dhātu si) - have been identified. Explanatory models of cancer in TTM were linked with biomedical concepts and relevant pharmacological actions. Traditional uses and available scientific evidence of medicinal plants mentioned in the case studies for the treatment or prevention of mareng are presented and discussed. CONCLUSION Here for the first time five main characteristics of cancer based on Thai traditional medical concepts are analysed. Our findings are relevant not only for the planning of clinical studies or pharmacological experiment in the search for novel compounds for cancer treatment and prevention, but also for the integration of Thai traditional medicine in cancer care.
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MESH Headings
- Aged
- Anthropology, Medical
- Antineoplastic Agents, Phytogenic/adverse effects
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/therapeutic use
- Asian People/psychology
- Cultural Characteristics
- Ethnopharmacology
- Female
- Health Knowledge, Attitudes, Practice/ethnology
- Humans
- Interviews as Topic
- Male
- Medicine, Traditional
- Middle Aged
- Neoplasms/drug therapy
- Phytotherapy
- Plant Extracts/adverse effects
- Plant Extracts/isolation & purification
- Plant Extracts/therapeutic use
- Plants, Medicinal/adverse effects
- Plants, Medicinal/chemistry
- Plants, Medicinal/classification
- Thailand
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Affiliation(s)
- Natchagorn Lumlerdkij
- Center of Applied Thai Traditional Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand; Research Group Pharmacognosy and Phytotherapy, UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK.
| | - Jaturapat Tantiwongse
- Center of Applied Thai Traditional Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand.
| | - Suksalin Booranasubkajorn
- Center of Applied Thai Traditional Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand.
| | - Ranida Boonrak
- Center of Applied Thai Traditional Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand.
| | - Pravit Akarasereenont
- Center of Applied Thai Traditional Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand; Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand.
| | - Tawee Laohapand
- Center of Applied Thai Traditional Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok 10700, Thailand.
| | - Michael Heinrich
- Research Group Pharmacognosy and Phytotherapy, UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK.
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Gilcy GK, Kuttan G. Evaluation of Antiangiogenic Efficacy of Emilia sonchifolia (L.) DC on Tumor-Specific Neovessel Formation by Regulating MMPs, VEGF, and Proinflammatory Cytokines. Integr Cancer Ther 2016; 15:NP1-NP12. [PMID: 27146127 PMCID: PMC5739157 DOI: 10.1177/1534735416630807] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 12/12/2015] [Accepted: 01/07/2016] [Indexed: 10/28/2022] Open
Abstract
Formation of new blood vessels from preexisting vasculature is an indispensable process in tumor initiation, invasion, and metastasis. Novel therapeutic approaches target endothelial cells involved in the process of angiogenesis, due to their genetic stability relative to the rapidly mutating drug-resistant cancer cells. In the present study, we investigated the effect of an active fraction from Emilia sonchifolia, belonging to the family Asteraceae, a plant well known for its anti-inflammatory and antitumor effects, on the inhibition of tumor-specific angiogenesis. Administration of the active fraction from E sonchifolia (AFES; 5 mg/kg, body weight, intraperitoneally) containing the major compound γ-humulene significantly inhibited B16F10 melanoma-induced capillary formation in C57BL/6 mice. The level of serum vascular endothelial growth factor and serum proinflammatory cytokines such as interleukin-1β, interleukin-6, tumor necrosis factor-α, and granulocyte-macrophage colony-stimulating factor were also reduced significantly. At the same time, administration of AFES significantly enhanced the production of antiangiogenic factors such as tissue inhibitor of matrix metalloproteinase-1. Dose-dependent reduction can be seen in the budding and expansion of microvessels from rat thoracic aorta by AFES treatment. Inhibition of the activation of proenzyme to active enzyme of matrix metalloproteinase along with a successful reduction of proliferation, invasion, and migration of human umbilical vein endothelial cells demonstrated the antiangiogenic effect of AFES in vitro. To date, no study has examined the antiangiogenic activity of this plant with already well-known anti-inflammatory and antitumor effects. Results obtained in the present study by using both in vivo and in vitro angiogenic models altogether proved the inhibitory effect of AFES on tumor-specific neovessel formation.
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Affiliation(s)
| | - Girija Kuttan
- Amala Cancer Research Centre, Thrissur, Kerala, India
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Abdolmaleki Z, Arab HA, Amanpour S, Muhammadnejad S. Anti-angiogenic effects of ethanolic extract of Artemisia sieberi compared to its active substance, artemisinin. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2016. [DOI: 10.1016/j.bjp.2015.11.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Dogra NK, Kumar S. A review on ethno-medicinal uses and pharmacology ofVernonia cinereaLess. Nat Prod Res 2014; 29:1102-17. [DOI: 10.1080/14786419.2014.981814] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Toyang NJ, Verpoorte R. A review of the medicinal potentials of plants of the genus Vernonia (Asteraceae). JOURNAL OF ETHNOPHARMACOLOGY 2013; 146:681-723. [PMID: 23395623 DOI: 10.1016/j.jep.2013.01.040] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 01/22/2013] [Accepted: 01/22/2013] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Vernonia genus has about one thousand species and members of the genus are widely used as food and medicine. The aim of this review is to analyze published data on the ethnomedicinal, ethnoveterinary and zoopharmacognostic uses of plants of the Vernonia genus. This will help to identify the state of ethnopharmacological knowledge in regard to this genus and to propose future research priorities. MATERIALS AND METHODS The major scientific databases including SciFinder, Sciencedirect, Medline and Google Scholar were queried for information on Vernonia genus using various keyword combinations. The International Plant Name Index was also used to verify the names of species and authors. RESULTS A total of 109 Vernonia species were reported in the literature to have medicinal properties. One hundred and five (105) plants were linked to the treatment or management of 44 human diseases or health conditions. Plants of the genus also feature in ethnoveterinary and zoopharmacognostic practices. A total of 12 vernonia species were identified to be used in ethnoveterinary medicine while 2 species are used in self medication practices by chimpanzees and gorillas. In vitro and in vivo research studies reporting the validation of the medicinal properties of some species were also reviewed. One hundred and three bioactive compounds isolated from various Vernonia species were also identified. Vernonia amygdalina was identified as the most frequently used member of the Vernonia genus. The Vernolides, a class of sesquiterpene lactone were identified as the most studied compounds from the genus and show interesting bioactivity in antiplasmodial, antileishmanial, antischistosomial, cytotoxicity, antimicrobial and anti-inflammatory assays. CONCLUSION On the basis of results from a combination of in vitro and in vivo efficacy and toxicity studies reported, Vernonia amygdalina holds the most promise for development into a nutraceutical against diabetes and malaria while Vernonia cinerea has potential against cancer and inflammatory conditions. Vernolide A is so far the most promising single agent from a Vernonia species that has potential for development into an anticancer agent. The other Vernonia species and isolated compounds require further studies to ascertain their medicinal potentials.
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Affiliation(s)
- Ngeh J Toyang
- Virgin Botanicals & Biotech Inc. Columbia, MD, USA; Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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Pratheeshkumar P, Son YO, Budhraja A, Wang X, Ding S, Wang L, Hitron A, Lee JC, Kim D, Divya SP, Chen G, Zhang Z, Luo J, Shi X. Luteolin inhibits human prostate tumor growth by suppressing vascular endothelial growth factor receptor 2-mediated angiogenesis. PLoS One 2012; 7:e52279. [PMID: 23300633 PMCID: PMC3534088 DOI: 10.1371/journal.pone.0052279] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 11/12/2012] [Indexed: 12/11/2022] Open
Abstract
Angiogenesis, the formation of new blood vessels from pre-existing vascular beds, is essential for tumor growth, invasion, and metastasis. Luteolin is a common dietary flavonoid found in fruits and vegetables. We studied the antiangiogenic activity of luteolin using in vitro, ex vivo, and in vivo models. In vitro studies using rat aortic ring assay showed that luteolin at non-toxic concentrations significantly inhibited microvessel sprouting and proliferation, migration, invasion and tube formation of endothelial cells, which are key events in the process of angiogenesis. Luteolin also inhibited ex vivo angiogenesis as revealed by chicken egg chorioallantoic membrane assay (CAM) and matrigel plug assay. Gelatin zymographic analysis demonstrated the inhibitory effect of luteolin on the activation of matrix metalloproteinases MMP-2 and MMP-9. Western blot analysis showed that luteolin suppressed VEGF induced phosphorylation of VEGF receptor 2 and their downstream protein kinases AKT, ERK, mTOR, P70S6K, MMP-2, and MMP-9 in HUVECs. Proinflammatory cytokines such as IL-1β, IL-6, IL-8, and TNF-α level were significantly reduced by the treatment of luteolin in PC-3 cells. Luteolin (10 mg/kg/d) significantly reduced the volume and the weight of solid tumors in prostate xenograft mouse model, indicating that luteolin inhibited tumorigenesis by targeting angiogenesis. CD31 and CD34 immunohistochemical staining further revealed that the microvessel density could be remarkably suppressed by luteolin. Moreover, luteolin reduced cell viability and induced apoptosis in prostate cancer cells, which were correlated with the downregulation of AKT, ERK, mTOR, P70S6K, MMP-2, and MMP-9 expressions. Taken together, our findings demonstrate that luteolin inhibits human prostate tumor growth by suppressing vascular endothelial growth factor receptor 2-mediated angiogenesis.
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Affiliation(s)
- Poyil Pratheeshkumar
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Young-Ok Son
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Amit Budhraja
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Xin Wang
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Songze Ding
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Lei Wang
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Andrew Hitron
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Jeong-Chae Lee
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Donghern Kim
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Sasidharan Padmaja Divya
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Cochin, India
| | - Gang Chen
- Department of Internal Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Zhuo Zhang
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Jia Luo
- Department of Internal Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Xianglin Shi
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
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Pratheeshkumar P, Budhraja A, Son YO, Wang X, Zhang Z, Ding S, Wang L, Hitron A, Lee JC, Xu M, Chen G, Luo J, Shi X. Quercetin inhibits angiogenesis mediated human prostate tumor growth by targeting VEGFR- 2 regulated AKT/mTOR/P70S6K signaling pathways. PLoS One 2012; 7:e47516. [PMID: 23094058 PMCID: PMC3475699 DOI: 10.1371/journal.pone.0047516] [Citation(s) in RCA: 176] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 09/12/2012] [Indexed: 01/16/2023] Open
Abstract
Angiogenesis is a crucial step in the growth and metastasis of cancers, since it enables the growing tumor to receive oxygen and nutrients. Cancer prevention using natural products has become an integral part of cancer control. We studied the antiangiogenic activity of quercetin using ex vivo, in vivo and in vitro models. Rat aortic ring assay showed that quercetin at non-toxic concentrations significantly inhibited microvessel sprouting and exhibited a significant inhibition in the proliferation, migration, invasion and tube formation of endothelial cells, which are key events in the process of angiogenesis. Most importantly, quercetin treatment inhibited ex vivo angiogenesis as revealed by chicken egg chorioallantoic membrane assay (CAM) and matrigel plug assay. Western blot analysis showed that quercetin suppressed VEGF induced phosphorylation of VEGF receptor 2 and their downstream protein kinases AKT, mTOR, and ribosomal protein S6 kinase in HUVECs. Quercetin (20 mg/kg/d) significantly reduced the volume and the weight of solid tumors in prostate xenograft mouse model, indicating that quercetin inhibited tumorigenesis by targeting angiogenesis. Furthermore, quercetin reduced the cell viability and induced apoptosis in prostate cancer cells, which were correlated with the downregulation of AKT, mTOR and P70S6K expressions. Collectively the findings in the present study suggest that quercetin inhibits tumor growth and angiogenesis by targeting VEGF-R2 regulated AKT/mTOR/P70S6K signaling pathway, and could be used as a potential drug candidate for cancer therapy.
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Affiliation(s)
- Poyil Pratheeshkumar
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Amit Budhraja
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Young-Ok Son
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Xin Wang
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Zhuo Zhang
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Songze Ding
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Lei Wang
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Andrew Hitron
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Jeong-Chae Lee
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Mei Xu
- Department of Internal Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Gang Chen
- Department of Internal Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Jia Luo
- Department of Internal Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
| | - Xianglin Shi
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, Kentucky, United States of America
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Kuttan G, Pratheeshkumar P, Manu KA, Kuttan R. Inhibition of tumor progression by naturally occurring terpenoids. PHARMACEUTICAL BIOLOGY 2011; 49:995-1007. [PMID: 21936626 DOI: 10.3109/13880209.2011.559476] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
CONTEXT Cancer is a major public health problem in India and many other parts of the world. Its two main characteristics are uncontrolled cell growth and metastasis. Natural products represent a rich source of compounds that have found many applications in various fields of medicines and therapy including cancer therapy. Effective ingredients in several plant-derived medicinal extracts are terpenoid compounds and many terpenes have biological activities and are used for the treatment of human diseases. OBJECTIVES This review attempted to collect all available published scientific literature of eight naturally occurring terpenoids and their effect on inhibition of tumor progression. METHODS The present review is about eight potent naturally occurring terpenoids that have been studied for their pharmacological properties in our lab and this review includes 130 references compiled from all major databases. RESULTS Literature survey revealed that triterpenoids, such as glycyrrhizic acid, ursolic acid, oleanolic acid, and nomilin, the diterpene andrographolide, and the monoterpenoids like limonene and perillic acid had shown immunomodulatory and antitumor activities. All of them could induce apoptosis in various cancer cells by activating various proapoptotic signaling cascades. Many of these terpenoids found to inhibit metastatic progression and tumor-induced angiogenesis. The molecular mechanisms that involved in these activities include inhibition of various oncogenic and anti-apoptotic signaling pathways and suppression or nuclear translocation of various transcription factors including nuclear factor kappa B (NF-κB). CONCLUSION The chemopreventive and chemoprotective effects of these compounds point toward their possible role in modern anticancer therapies.
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Affiliation(s)
- Girija Kuttan
- Department of Immunology, Amala Cancer Research Centre, Amala Nagar, Thrissur, Kerala, India.
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Khazaei M, Fallahzadeh AR, Sharifi MR, Afsharmoghaddam N, Javanmard SH, Salehi E. Effects of diabetes on myocardial capillary density and serum angiogenesis biomarkers in male rats. Clinics (Sao Paulo) 2011; 66:1419-24. [PMID: 21915494 PMCID: PMC3161222 DOI: 10.1590/s1807-59322011000800019] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 04/26/2011] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION Cardiovascular disease is one of the main causes of mortality and morbidity in diabetic patients. This study evaluated the effects of diabetes on myocardial capillary density and several serum angiogenic factors including nitric oxide, vascular endothelial growth factor, and soluble vascular endothelial growth factor receptors. METHODS Twelve male rats were divided into two groups: control and diabetic (n = 6 each). Diabetes was induced with a single dose of streptozotocin (50 mg/kg). After 21 days, capillary density in the myocardial tissue was evaluated using immunohistochemical staining and is reported as capillaries per mm². Blood samples were collected before and after the induction of diabetes. RESULTS In the diabetic group, serum nitric oxide and soluble vascular endothelial growth factor receptor 2 concentrations were lower than the levels in the control group, while the level of soluble vascular endothelial growth factor receptor 1 was significantly higher. There was no significant change in the serum vascular endothelial growth factor concentration between the diabetic and control groups; however, the ratio of vascular endothelial growth factor to vascular endothelial growth factor receptor 1 was significantly lower in the diabetic animals. The myocardial capillary density was also lower in the diabetic group compared with the control group (1549 ± 161 vs. 2156 ± 202/mm², respectively). CONCLUSION Reduced serum nitric oxide and vascular endothelial growth factor receptor 2 levels, increased serum vascular endothelial growth factor receptor 1 levels and a lower vascular endothelial growth factor to vascular endothelial growth factor receptor 1 ratio may be responsible for the decreased myocardial capillary density in diabetic rats.
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Affiliation(s)
- Majid Khazaei
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran.
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