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Hawash M, Kahraman DC, Cetin-Atalay R, Baytas SN. Induction of Apoptosis in Hepatocellular Carcinoma Cell Lines by Novel Indolylacrylamide Derivatives: Synthesis and Biological Evaluation. Chem Biodivers 2021; 18:e2001037. [PMID: 33713038 DOI: 10.1002/cbdv.202001037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/12/2021] [Indexed: 12/22/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most prevalent primary liver cancer and one of the leading causes of cancer associated death worldwide. This is due to the highly resistant nature of this malignancy and the lack of effective treatment options for advanced stage HCC patients. The hyperactivity of PI3K/Akt and Ras/Raf/MEK/ERK signaling pathways contribute to the cancer progression, survival, motility, and resistance mechanisms, and the interaction of these two pathways are responsible for the regulation of cancer cell growth and development. Therefore, it is vital to design and develop novel therapeutic options for HCC treatment targeting these hyperactive pathways. For this purpose, novel series of trans-indole-3-ylacrylamide derivatives originated from the lead compound, 3-(1H-indole-3-yl)-N-(3,4,5-trimethoxyphenyl)acrylamide, have been synthesized and analyzed for their bioactivity on cancer cells along with the lead compound. Based on the initial screening, the most potent compounds were selected to elucidate their effects on cellular signaling activity of HCC cell lines. Cell cycle analysis, immunofluorescence, and Western blot analysis revealed that lead compound and (E)-N-(4-tert-butylphenyl)-3-(1H-indole-3-yl)acrylamide induced cell cycle arrest at the G2/M phase, enhanced chromatin condensation and PARP-cleavage, addressing induction of apoptotic cell death. Additionally, these compounds decreased the activity of ERK signaling pathway, where phosphorylated ERK1/2 and c-Jun protein levels diminished significantly. Relevant to these findings, the lead compound was able to inhibit tubulin polymerization as well. To conclude, the novel trans-indole-3-ylacrylamide derivatives inhibit one of the critical pathways associated with HCC which results in cell cycle arrest and apoptosis in HCC cell lines.
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Affiliation(s)
- Mohammed Hawash
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330, Ankara, Turkey.,Present address, Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
| | - Deniz Cansen Kahraman
- Cancer Systems Biology Laboratory, Graduate School of Informatics, METU, 06800, Ankara, Turkey
| | - Rengul Cetin-Atalay
- Cancer Systems Biology Laboratory, Graduate School of Informatics, METU, 06800, Ankara, Turkey
| | - Sultan Nacak Baytas
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, 06330, Ankara, Turkey
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2
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Wen C, Chen J, Zhang D, Wang H, Che J, Qin Q, He L, Cai Z, Lin M, Lou Q, Huang L, Chen D, Iwamoto A, Ren D, Wang L, Lan P, Wang J, Liu H, Yang X. Pseudolaric acid B induces mitotic arrest and apoptosis in both 5-fluorouracil-sensitive and -resistant colorectal cancer cells. Cancer Lett 2016; 383:295-308. [PMID: 27713084 DOI: 10.1016/j.canlet.2016.09.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/18/2016] [Accepted: 09/18/2016] [Indexed: 01/10/2023]
Abstract
5-fluorouracil (5-FU)-based chemotherapy is the main chemotherapeutic approach for colorectal cancer (CRC) treatment. Because chemoresistance occurs frequently and significantly limits CRC therapies, a novel agent is needed. Pseudolaric acid B (PAB), a small molecule derived from the Chinese medicinal herb ''Tujinpi'', exhibits strong cytotoxic effects on a variety of cancers. However, the detailed mechanisms by which PAB inhibits CRC cell growth and its potential role in overcoming 5-FU resistance have not been well studied. In this study, we showed that PAB significantly inhibited the viability of various CRC cell lines but induced minor cytotoxicity in normal cells. Both the in vitro and in vivo results showed that PAB induced proliferation inhibition, mitotic arrest and subsequently caspase-dependent apoptosis in both 5-FU-sensitive and -resistant CRC cells. Moreover, PAB was shown to interfere with CRC cell mitotic spindle apparatus and activate the spindle assembly checkpoint. Finally, CDK1 activity was involved in PAB-induced mitotic arrest and apoptosis in CRC cells. Taken together, these data reveal that PAB induces CRC cell mitotic arrest followed by apoptosis and overcomes 5-FU resistance in vitro and in vivo, suggesting that PAB may be a potential agent for CRC treatment, particularly for 5-FU-resistant CRC.
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Affiliation(s)
- Chuangyu Wen
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Clinical Laboratory, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Junxiong Chen
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Di Zhang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huihui Wang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Clinical Laboratory, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Jia Che
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Clinical Laboratory, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Qiyuan Qin
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lu He
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zerong Cai
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Mengmeng Lin
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qiong Lou
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Clinical Laboratory, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Lanlan Huang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Daici Chen
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Aikichi Iwamoto
- Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Donglin Ren
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lei Wang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ping Lan
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jianping Wang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huanliang Liu
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Clinical Laboratory, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, China.
| | - Xiangling Yang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
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Chi L, Wu D, Li Z, Zhang M, Liu H, Wang C, Gui S, Geng M, Li H, Zhang J. Modified Release and Improved Stability of Unstable BCS II Drug by Using Cyclodextrin Complex as Carrier To Remotely Load Drug into Niosomes. Mol Pharm 2015; 13:113-24. [DOI: 10.1021/acs.molpharmaceut.5b00566] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liandi Chi
- Center
for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Delin Wu
- School
of Pharmaceutical Sciences, Anhui University of Chinese Medicine, Hefei 230038, China
| | - Zhuo Li
- Center
for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
- School
of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Minmin Zhang
- Division
of Anti-tumor Pharmacology, State Key Laboratory of Drug Research,
Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Hongchun Liu
- Division
of Anti-tumor Pharmacology, State Key Laboratory of Drug Research,
Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Caifen Wang
- Center
for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Shuangying Gui
- School
of Pharmaceutical Sciences, Anhui University of Chinese Medicine, Hefei 230038, China
| | - Meiyu Geng
- Division
of Anti-tumor Pharmacology, State Key Laboratory of Drug Research,
Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Haiyan Li
- Center
for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Jiwen Zhang
- Center
for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
- School
of Pharmaceutical Sciences, Anhui University of Chinese Medicine, Hefei 230038, China
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Stabilizing versus destabilizing the microtubules: a double-edge sword for an effective cancer treatment option? Anal Cell Pathol (Amst) 2015; 2015:690916. [PMID: 26484003 PMCID: PMC4592889 DOI: 10.1155/2015/690916] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/29/2015] [Accepted: 09/01/2015] [Indexed: 11/17/2022] Open
Abstract
Microtubules are dynamic and structural cellular components involved in several cell functions, including cell shape, motility, and intracellular trafficking. In proliferating cells, they are essential components in the division process through the formation of the mitotic spindle. As a result of these functions, tubulin and microtubules are targets for anticancer agents. Microtubule-targeting agents can be divided into two groups: microtubule-stabilizing, and microtubule-destabilizing agents. The former bind to the tubulin polymer and stabilize microtubules, while the latter bind to the tubulin dimers and destabilize microtubules. Alteration of tubulin-microtubule equilibrium determines the disruption of the mitotic spindle, halting the cell cycle at the metaphase-anaphase transition and, eventually, resulting in cell death. Clinical application of earlier microtubule inhibitors, however, unfortunately showed several limits, such as neurological and bone marrow toxicity and the emergence of drug-resistant tumor cells. Here we review several natural and synthetic microtubule-targeting agents, which showed antitumor activity and increased efficacy in comparison to traditional drugs in various preclinical and clinical studies. Cryptophycins, combretastatins, ombrabulin, soblidotin, D-24851, epothilones and discodermolide were used in clinical trials. Some of them showed antiangiogenic and antivascular activity and others showed the ability to overcome multidrug resistance, supporting their possible use in chemotherapy.
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Wang H, Wang Y, Feng X, Suo J, Zhang N. Development and validation of LC–MS/MS method for quantification of pseudolaric acid B from the root bark of Pseudolarix kaempferi in rat plasma: Application to a pharmacokinetic study. J Pharm Biomed Anal 2015; 108:56-60. [DOI: 10.1016/j.jpba.2015.01.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 01/25/2015] [Accepted: 01/27/2015] [Indexed: 11/27/2022]
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6
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Chi L, Liu R, Guo T, Wang M, Liao Z, Wu L, Li H, Wu D, Zhang J. Dramatic improvement of the solubility of pseudolaric acid B by cyclodextrin complexation: Preparation, characterization and validation. Int J Pharm 2015; 479:349-56. [DOI: 10.1016/j.ijpharm.2015.01.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/29/2014] [Accepted: 01/05/2015] [Indexed: 10/24/2022]
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The inhibitory effect of pseudolaric acid B on gastric cancer and multidrug resistance via Cox-2/PKC-α/P-gp pathway. PLoS One 2014; 9:e107830. [PMID: 25250794 PMCID: PMC4176716 DOI: 10.1371/journal.pone.0107830] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 08/20/2014] [Indexed: 01/08/2023] Open
Abstract
Aim To investigate the inhibitory effect of pseudolaric acid B on subcutaneous xenografts of human gastric adenocarcinoma and the underlying molecular mechanisms involved in its multidrug resistance. Methods Human gastric adenocarcinoma SGC7901 cells and drug-resistant SGC7901/ADR cells were injected into nude mice to establish a subcutaneous xenograft model. The effects of pseudolaric acid B with or without adriamycin treatment were compared by determining the tumor size and weight. Cyclo-oxygenase-2, protein kinaseC-α and P-glycoprotein expression levels were determined by immunohistochemistry and western blot. Results Pseudolaric acid B significantly suppressed the tumor growth induced by SGC7901 cells and SGC7901/ADR cells. The combination of pseudolaric acid B and the traditional chemotherapy drug adriamycin exhibited more potent inhibitory effects on the growth of gastric cancer in vivo than treatment with either pseudolaric acid B or adriamycin alone. Protein expression levels of cyclo-oxygenase-2, protein kinaseC-α and P-glycoprotein were inhibited by pseudolaric acid B alone or in combination with adriamycin in SGC7901/ADR cell xenografts. Conclusion Pseudolaric acid B has a significant inhibitory effect and an additive inhibitory effect in combination with adriamycin on the growth of gastric cancer in vivo, which reverses the multidrug resistance of gastric neoplasm to chemotherapy drugs by downregulating the Cox-2/PKC-α/P-gp/mdr1 signaling pathway.
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8
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Azizi G, Boghozian R, Mirshafiey A. The potential role of angiogenic factors in rheumatoid arthritis. Int J Rheum Dis 2014; 17:369-83. [PMID: 24467605 DOI: 10.1111/1756-185x.12280] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Angiogenesis is an important phenomenon in the pathogenesis of some diseases, such as numerous types of tumors and autoimmunity, and also a number of soluble and cell-bound factors may stimulate neovascularization in inflammatory reaction processes. Here, by highlighting the significance of angiogenesis reaction in rheumatoid arthritis (RA), we will mainly focus on the role of various growth factors, cytokines, enzymes, cells, hypoxic conditions and transcription factors in the angiogenic process and we will then explain some therapeutic strategies based on blockage of angiogenesis and modification of the vascular pathology in RA.
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Affiliation(s)
- Gholamreza Azizi
- Imam Hassan Mojtaba Hospital, Alborz University of Medical Sciences, Karaj, Iran
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9
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Jiang Z, Wu M, Miao J, Duan H, Zhang S, Chen M, Sun L, Wang Y, Zhang X, Zhu X, Zhang L. Deoxypodophyllotoxin exerts both anti-angiogenic and vascular disrupting effects. Int J Biochem Cell Biol 2013; 45:1710-9. [PMID: 23702033 DOI: 10.1016/j.biocel.2013.04.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 04/28/2013] [Accepted: 04/29/2013] [Indexed: 11/15/2022]
Abstract
A functioning vascular supply is essential for solid tumor growth and metastases, which means that blood vessels are an ideal target for antitumor drug discovery. Targeting tumor vasculature involves two main approaches, anti-angiogenesis and vascular disruption. The anti-angiogenic and vascular disrupting activities of deoxypodophyllotoxin (DPT), a natural microtubule destabilizer, were examined with several in vitro, ex vivo and/or in vivo models. First, we demonstrated that DPT significantly inhibits the proliferation, migration and tube formation of endothelial cells and inhibits angiogenesis in rat aortic ring and chick chorioallantoic membrane assays. In further studies, DPT induced cytoskeleton reorganization in endothelial cells, which likely contributed to the anti-angiogenic effect at non-cytotoxic concentrations. DPT treatment at higher concentrations for longer time induced the cell cycle arrest, which may contributes to its anti-proliferation effect and anti-angiogenic activity. And DPT dramatically inducted the expression of cyclin B1 and p21 (WAF1/CIP1). Meanwhile, DPT disrupted capillary-like networks in vitro and newly formed vessels from rat aortic rings. Endothelial cell contraction associated with an increase in F-actin via the Rho/Rho kinase pathway likely contributed to the vascular disrupting activity. Taken together, our results provided the initial evidence that DPT exerts potent anti-angiogenic and vascular disrupting effects. This study also provides important insight into the mechanism of action of promising new anticancer drugs with both anti-angiogenic and vascular disrupting activities.
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Affiliation(s)
- Zhenzhou Jiang
- Jiangsu Center for Drug Screening, China Pharmaceutical University, Nanjing 210009, PR China
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Huang M, Lu JJ, Huang MQ, Bao JL, Chen XP, Wang YT. Terpenoids: natural products for cancer therapy. Expert Opin Investig Drugs 2012; 21:1801-18. [DOI: 10.1517/13543784.2012.727395] [Citation(s) in RCA: 180] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Kamal A, Mallareddy A, Janaki Ramaiah M, Pushpavalli S, Suresh P, Kishor C, Murty J, Rao NS, Ghosh S, Addlagatta A, Pal-Bhadra M. Synthesis and biological evaluation of combretastatin-amidobenzothiazole conjugates as potential anticancer agents. Eur J Med Chem 2012; 56:166-78. [DOI: 10.1016/j.ejmech.2012.08.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 07/06/2012] [Accepted: 08/15/2012] [Indexed: 12/13/2022]
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12
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Fang D, Sun L, Lin S, Zhou L, Su N, Yuan S, Yu B. Vinorelbine inhibits angiogenesis and 95D migration via reducing hypoxic fibroblast stromal cell-derived factor 1 secretion. Exp Biol Med (Maywood) 2012; 237:1045-55. [PMID: 22946087 DOI: 10.1258/ebm.2012.012037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Tumor stroma plays a prominent role in cancer progression. Fibroblasts constitute a majority of the stromal cells in tumor, and yet the functional contributions of these cells to tumor angiogenesis and invasion are poorly understood, especially the anticancer drug interference to these processes. To estimate the effects of vinorelbine (VNR) on fibroblast-associated tumor invasion and angiogenesis, we evaluated the response of 95D and human umbilical vein endothelial cell (HUVEC) migration, tube formation in vitro, as well as capillary formation of rat thoracic aorta rings to hypoxic MRC-5 conditioned medium (CM) by VNR pretreatment. Our results demonstrated that VNR significantly inhibited 95D and HUVEC migration and angiogenesis induced by hypoxic MRC-5 cells. We also showed that hypoxic MRC-5 CM (Hypo-CM) had a higher level of stromal cell-derived factor 1 (SDF-1) secretion, while Hypo-CM up-regulated the CXCR4 expression in HUVECs and 95Ds. This increased activity of SDF-1/CXCR4 paracrine was clearly attenuated by VNR pretreatment. It was further found that pretreating HUVECs and 95Ds with AMD3100, a CXCR4 antagonist, markedly reversed the Hypo-CM promoting cell migration and angiogenesis, while adding exogenous SDF-1 attenuated the inhibition effects of CM collected from VNR-pretreated hypoxic MRC-5 (Hypo-CMV). These data indicate that VNR indirectly decreased 95D migration and angiogenesis through its effect on hypoxic MRC-5, via impacting SDF-1/CXCR4 paracrine, suggesting that VNR could interrupt the influence of fibroblasts on HUVECs and 95Ds to exert an anticancer role. Therefore, fibroblasts should be taken into consideration when evaluating and developing anticancer drugs.
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Affiliation(s)
- Dongdong Fang
- Jiangsu Center for Drug Screening, China Pharmaceutical University, Nanjing 210009, People's Republic of China
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13
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Discovery of structurally diverse and bioactive compounds from plant resources in China. Acta Pharmacol Sin 2012; 33:1147-58. [PMID: 22941284 DOI: 10.1038/aps.2012.105] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
This review describes the major discoveries of structurally diverse and/or biologically significant compounds from plant resources in China, mainly from the traditional Chinese medicines (TCMs) since the establishment of our research group in 1999. In the past decade, a large array of biologically significant and novel structures has been identified from plant resources (or TCM) in our laboratory. The structural modification of several biologically important compounds led to more than 400 derivatives, some of which exhibited significantly improved activities and provided opportunities to elucidate the structure-activity relationship of the related compound class. These findings are important for drug discovery and help us understand the biological basis for the traditional applications of these plants in TCM.
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Wei N, Li T, Chen H, Mei X, Cao B, Zhang Y. The Immunosuppressive Activity of Pseudolaric Acid B on T lymphocytes
in vitro. Phytother Res 2012; 27:980-5. [DOI: 10.1002/ptr.4824] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 05/21/2012] [Accepted: 07/26/2012] [Indexed: 01/04/2023]
Affiliation(s)
- Na Wei
- Shenyang Pharmaceutical University Shenyang 110016 China
| | - Tan Li
- Department of Immunology Logistics University of the Chinese People's Armed Police Force Tianjin China
| | - Hong Chen
- Department of Pharmacognosy Logistics University of the Chinese People's Armed Police Force Tianjin China
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard Logistics University of the Chinese People's Armed Police Force Tianjin China
| | - Xin Mei
- Department of Pharmacognosy Logistics University of the Chinese People's Armed Police Force Tianjin China
| | - Bo Cao
- Department of Pharmacognosy Logistics University of the Chinese People's Armed Police Force Tianjin China
| | - Yu‐yang Zhang
- Shenyang Pharmaceutical University Shenyang 110016 China
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Liu J, Guo W, Xu B, Ran F, Chu M, Fu H, Cui J. Angiogenesis inhibition and cell cycle arrest induced by treatment with Pseudolarix acid B alone or combined with 5-fluorouracil. Acta Biochim Biophys Sin (Shanghai) 2012; 44:490-502. [PMID: 22551583 DOI: 10.1093/abbs/gms029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Angiogenesis inhibitors combined with chemotherapeutic drugs have significant efficacy in the treatment of a variety of cancers. Pseudolarix acid B (PAB) is a traditional pregnancy-terminating agent, which has previously been shown to reduce tumor growth and angiogenesis. In this study, we used the high content screening assay to examine the effects of PAB on human umbilical vein endothelial cells (HUVECs). Two hepatocarcinoma 22-transplanted mouse models were used to determine PAB efficacy in combination with 5-fluorouracil (5-Fu). Our results suggested that PAB (0.156-1.250 μM) inhibited HUVECs motility in a concentration-dependent manner without obvious cytotoxicity in vitro. In vivo, PAB (25 mg/kg/day) promoted the anti-tumor efficacy of 5-Fu (5 mg/kg/2 days) in combination therapy, resulting in significantly higher tumor inhibition rates, lower microvessel density values, and prolonged survival times. It was also demonstrated that PAB acted by blocking the cell cycle at both the G(1)/S boundary and M phase, down-regulation of vascular endothelial growth factor, hypoxia-inducible factor 1α and cyclin E expression, and up-regulation of cdc2 expression. These observations provide the first evidence that PAB in combination with 5-Fu may be useful in cancer treatment.
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Affiliation(s)
- Jingtao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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Man S, Gao W, Wei C, Liu C. Anticancer drugs from traditional toxic Chinese medicines. Phytother Res 2012; 26:1449-65. [PMID: 22389143 DOI: 10.1002/ptr.4609] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 12/12/2011] [Accepted: 12/19/2011] [Indexed: 02/06/2023]
Abstract
Many anticancer drugs are obtained from natural sources. Nature produces a variety of toxic compounds, which are often used as anticancer drugs. Up to now, there are at least 120 species of poisonous botanicals, animals and minerals, of which more than half have been found to possess significant anticancer properties. In spite of their clinical toxicity, they exhibit pharmacological effects and have been used as important traditional Chinese medicines for the different stages of cancer. The article reviews many structures such as alkaloids of Camptotheca acuminata, Catharanthus roseus and Cephalotaxus fortunei, lignans of Dysosma versipellis and Podophyllum emodi, ketones of Garcinia hanburyi, terpenoids of Mylabris and Ginkgo biloba, diterpenoids of Tripterygium wilfordii, Euphorbia fischeriana, Euphorbia lathyris, Euphorbia kansui, Daphne genkwa, Pseudolarix kaempferi and Brucea javanica, triterpenoids of Melia toosendan, steroids of Periploca sepium, Paris polyphylla and Venenum Bufonis, and arsenic compounds including Arsenicum and Realgar. By comparing their related phytochemistry, toxic effects and the recent advances in understanding the mechanisms of action, this review puts forward some ideals and examples about how to increase antitumour activity and/or reduce the side effects experienced with Chinese medicine.
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Affiliation(s)
- Shuli Man
- Key Laboratory of Industrial Fermentation Microbiology, (Tianjin University of Science and Technology), Ministry of Education, Tianjin, 300457, PR China
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Pseudolaric acid B inhibits inducible cyclooxygenase-2 expression via downregulation of the NF-κB pathway in HT-29 cells. J Cancer Res Clin Oncol 2012; 138:885-96. [DOI: 10.1007/s00432-011-1120-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Xu B, Ding J, Chen KX, Miao ZH, Huang H, Liu H, Luo XM. Advances in Cancer Chemotherapeutic Drug Research in China. RECENT ADVANCES IN CANCER RESEARCH AND THERAPY 2012. [PMCID: PMC7158183 DOI: 10.1016/b978-0-12-397833-2.00012-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Bin Xu
- Corresponding author: Bin Xu, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zi Road, Shanghai 201203, People’s Republic of China. Tel: O21-54920515 (o), 13501793936 (mobile), Fax: 021-54920568, e-mail:
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He ZH, Zhou R, He MF, Lau CBS, Yue GGL, Ge W, But PPH. Anti-angiogenic effect and mechanism of rhein from Rhizoma Rhei. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2011; 18:470-478. [PMID: 21112197 DOI: 10.1016/j.phymed.2010.10.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 08/30/2010] [Accepted: 10/07/2010] [Indexed: 05/30/2023]
Abstract
PURPOSE Rhein is a major bioactive component in rhubarb (Dahuang), a famous traditional Chinese medicine derived from the rhizome of Rheum palmatum and related species. It was reported to have antitumor and anti-inflammatory properties. Our previous studies found rhein displaying potent anti-angiogenic activities in a zebrafish embryo model. Its action mechanisms need further elucidation. METHODS The inhibition effect of vessel formation was checked by microscopic imaging on Tg(fli1a:EGFP)y1 zebrafish embryos. Then the action mechanism of rhein was investigated by semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) on wild type zebrafish embryos and further tested on human umbilical vein endothelial cells. RESULTS At 20μM, rhein could almost completely block intersegmental blood vessels formation at both 48 and 72hpf, and completely inhibit subintestinal vessel plexus formation at 72hpf. Rhein affected multiple molecular targets related to angiogenesis, particularly angpt2 and tie2, and also inhibited endothelial cell migration. CONCLUSION Rhein could inhibit angiogenesis, which may play a role in antitumor and anti-inflammatory actions.
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Affiliation(s)
- Zhi-Heng He
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, P.R. China
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Yoo HJ, Kang HJ, Song YS, Park EH, Lim CJ. Anti-angiogenic, antinociceptive and anti-inflammatory activities of Lonicera japonica extract. J Pharm Pharmacol 2010; 60:779-86. [DOI: 10.1211/jpp.60.6.0014] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
This study aimed to elucidate some novel pharmacological activities of Lonicera japonica (Caprifoliaceae), which is widely used in Oriental folk medicine. The ethanolic extract of L. japonica (LJ) dose dependently inhibited chick chorioallantoic membrane angiogenesis. The antinociceptive activity of LJ was assessed using the acetic acid-induced constriction model in mice. LJ showed anti-inflammatory activity in two in-vivo models: the vascular permeability and air pouch models. LJ suppressed the production of nitric oxide via down-regulation of inducible nitric oxide synthase in lipopolysaccharide-stimulated RAW264.7 macrophage cells. However, LJ was unable to suppress induction of cyclooxygenase-2 in the stimulated macrophage cells. LJ decreased the reactive oxygen species level in the stimulated macrophage cells. In brief, the flowers of L. japonica possess potent anti-angiogenic and antinociceptive activities, in addition to anti-inflammatory activity, which partly supports its therapeutic efficacy.
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Affiliation(s)
- Hye-Jung Yoo
- College of Pharmacy, Sookmyung, Women's University, Seoul 140-742, Korea
| | - Hyun-Jung Kang
- Division of Life Sciences and Research Institute of Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Yun Seon Song
- College of Pharmacy, Sookmyung, Women's University, Seoul 140-742, Korea
| | - Eun-Hee Park
- College of Pharmacy, Sookmyung, Women's University, Seoul 140-742, Korea
| | - Chang-Jin Lim
- Division of Life Sciences and Research Institute of Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
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Chen SM, Meng LH, Ding J. New microtubule-inhibiting anticancer agents. Expert Opin Investig Drugs 2010; 19:329-43. [DOI: 10.1517/13543780903571631] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Chiu P, Leung LT, Ko BCB. Pseudolaric acids: isolation, bioactivity and synthetic studies. Nat Prod Rep 2010; 27:1066-83. [DOI: 10.1039/b906520m] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Induction of G2/M arrest by pseudolaric acid B is mediated by activation of the ATM signaling pathway. Acta Pharmacol Sin 2009; 30:442-50. [PMID: 19305423 DOI: 10.1038/aps.2009.20] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIM The aim of this study was to investigate the mechanism of pseudolaric acid B (PLAB)-induced cell cycle arrest in human melanoma SK-28 cells. METHODS Cell growth inhibition was detected by MTT assay, the cell cycle was analyzed by flow cytometry, and protein expression was examined by Western blot analysis. RESULTS PLAB inhibited the growth of human melanoma cells and induced G(2)/M arrest in SK-28 cells, accompanied by an up-regulation of Cdc2 phosphorylation and a subsequent down-regulation of Cdc2 expression. Furthermore, PLAB decreased the expression of Cdc25C phosphatase and increased the expression of Wee1 kinase. Meanwhile, a reduction in Cdc2 activity was partly due to induction of the expression of p21(waf1/cip1) in a p53-dependent manner. In addition, PLAB activated the checkpoint kinase, Chk2, and increased the expression of p53, two major targets of ATM kinase. These effects were inhibited by caffeine, an ATM kinase inhibitor. We also found that PLAB significantly enhanced ATM kinase activity. CONCLUSION Taken together, these results suggest that PLAB induced G(2)/M arrest in human melanoma cells via a mechanism involving the activation of ATM, and the effect of PLAB on Cdc2 activity was mediated via interactions with the Chk2-Cdc25C and p53 signalling pathways, two distinct downstream pathways of ATM. PLAB may be a promising chemopreventive agent for treating human melanoma.
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Ren X, Dai M, Lin LP, Li PK, Ding J. Anti-angiogenic and vascular disrupting effects of C9, a new microtubule-depolymerizing agent. Br J Pharmacol 2009; 156:1228-38. [PMID: 19302593 DOI: 10.1111/j.1476-5381.2009.00112.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND AND PURPOSE The critical role of blood supply in the growth of solid tumours makes blood vessels an ideal target for anti-tumour drug discovery. The anti-angiogenic and vascular disrupting activities of C9, a newly synthesized microtubule-depolymerizing agent, were investigated with several in vitro and in vivo models. Possible mechanisms involved in its activity were also assessed. EXPERIMENTAL APPROACH Microtubule-depolymerizing actions were assessed by surface plasmon resonance binding, competitive inhibition and cytoskeleton immunofluorescence. Anti-angiogenic and vascular disrupting activities were tested on proliferation, migration, tube formation with human umbilical vein endothelial cells, and in rat aortic ring, chick chorioallantoic membrane and Matrigel plug assays. Western blots and Rho activation assays were employed to examine the role of Raf-MEK-ERK (mitogen-activated ERK kinase, extracellular signal-regulated kinase) and Rho/Rho kinase signalling. KEY RESULTS C9 inhibited proliferation, migration and tube formation of endothelial cells and inhibited angiogenesis in aortic ring and chick chorioallantoic membrane assays. C9 induced disassembly of microtubules in endothelial cells and down-regulated Raf-MEK-ERK signalling activated by pro-angiogenic factors. In addition, C9 disrupted capillary-like networks and newly formed vessels in vitro and rapidly decreased perfusion of neovasculature in vivo. Endothelial cell contraction and membrane blebbing induced by C9 in neovasculature was dependent on the Rho/Rho kinase pathway. CONCLUSIONS AND IMPLICATIONS Anti-angiogenic and vascular disruption by C9 was associated with changes in morphology and function of endothelial cells, involving the Raf-MEK-ERK and Rho/Rho kinase signalling pathways. These findings strongly suggest that C9 is a new microtubule-binding agent that could effectively target tumour vasculature.
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Affiliation(s)
- Xuan Ren
- Division of Anti-tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
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Meng AG, Jiang LL. Pseudolaric acid B-induced apoptosis through p53-dependent pathway in human gastric carcinoma cells. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2009; 11:142-152. [PMID: 19219727 DOI: 10.1080/10286020802573420] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Pseudolaric acid B (PLAB, 1), a natural diterpenoid compound, was isolated from Pseudolarix kaempferi Gordon. It has shown antifungal, antifertility, and antiangiogenic properties in previous studies. Recently, increasing evidence has confirmed that 1 exhibits antitumor effects in several tumor cell lines, but the underlying mechanism has not been fully elucidated. The aim of this study was to investigate the mechanism of PLAB-induced cell apoptosis in MGC803 cells. The results showed that 1 significantly inhibited the proliferation of MGC803 cells at 0.01-10 microM and the IC(50) value was 0.91 microM for 48 h. PLAB-induced apoptosis in MGC803 cells was confirmed by DNA fragmentation assay and Hoechst33342/PI staining. PLAB-treated MGC803 cells were arrested at G(2) phase, which was associated with a marked increment of the expression of cyclin-dependent kinase inhibitor p21. The induction of p21 appeared to be transcriptionally up-regulated and was p53-dependent. In addition, PLAB induced Fas/APO-1 and caspase-3 expressions that were also correlated with apoptosis. Meanwhile, 1 decreased the mRNA expression of bcl-2, which is an antiapoptosis factor. In conclusion, 1 induced apoptosis through p53-dependent pathway in human gastric carcinoma cells. These findings suggest that 1 may be a novel promising agent for treating human gastric carcinoma.
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Affiliation(s)
- Ai-Guo Meng
- Department of Biochemistry, Hebei Medical University, Shijiazhuang, China
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Abstract
We report a full account of our work toward the total synthesis of pseudolaric acid B (1a), a diterpene acid isolated from the bark of Pseudolarix kaempferi Gordon (pinaceae). Compound 1a is an antifungal and antifertility agent. Furthermore, its capacity for inhibiting tubulin polymerization makes it a potential lead for cancer therapy. Herein, we describe the use of a Ru- or Rh-catalyzed [5 + 2] intramolecular cycloaddition reaction of an alkyne and a vinylcyclopropane for the construction of the polyhydroazulene core of the molecule. Our first unsuccessful strategy for the introduction of the quaternary center based on an epoxide opening with cyanide led to the discovery of a new TBAF-mediated isomerization of a 1,4-diene to a 1,3-diene and a vinylogous eliminative opening of an epoxide to form a dienol. Our second strategy, based on the cyclization of an alkoxycarbonyl radical upon a diene system, succeeded in forming the quaternary center. Detailed studies showed the dependence of this underutilized approach for the synthesis of lactones on substrate structure and reaction conditions. In the late stage of the synthesis, the unique capacity of cerium organometallic reagents to add to a sensitive, sterically hindered ketone was demonstrated. The easy formation of an oxo-bridged derivative was the major hurdle to the completion of the synthesis and showcased the intriguing reactivity of the complex core of the pseudolaric acids.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
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Yang SP, Cai YJ, Zhang BL, Tong LJ, Xie H, Wu Y, Lin LP, Ding J, Yue JM. Structural Modification of an Angiogenesis Inhibitor Discovered from Traditional Chinese Medicine and a Structure–Activity Relationship Study. J Med Chem 2007; 51:77-85. [DOI: 10.1021/jm070906g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sheng-Ping Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Yu-Jun Cai
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Bang-Le Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Lin-Jiang Tong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Hua Xie
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Yan Wu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Li-Ping Lin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Jian Ding
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, People’s Republic of China
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Liu P, Guo H, Guo H, Sheng Y, Wang W, Xu M, Feng S, Cheng F, Guo DA. Simultaneous determination of seven major diterpenoids in Pseudolarix kaempferi by high-performance liquid chromatography DAD method. J Pharm Biomed Anal 2007; 44:730-6. [PMID: 17446030 DOI: 10.1016/j.jpba.2007.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2006] [Revised: 03/06/2007] [Accepted: 03/09/2007] [Indexed: 10/23/2022]
Abstract
A reversed phase high-performance liquid chromatography method was established for the first time to simultaneously qualify the seven major diterpenoids in Pseudolarix kaempferi, namely pseudolaric acid B O-beta-D-glucopyranoside (1), pseudolaric acid C2 (2), pseudolaric acid C1 (3), deacetylpseudolaric acid A (4), pseudolaric acid A O-beta-D-glucopyranoside (5), pseudolaric acid B (6) and pseudolaric acid A (7). The optimal conditions of separation and detection were achieved on an Inertsil ODS-3 column with gradient elution of methanol and 0.5% aqueous acetic acid (v/v) at the flow rate of 0.6 ml min(-1) within 40 min and detection wavelength set at 262 nm. All calibration curves showed good linear regression (r2>0.9999) within test ranges. This method provided good accuracy with recoveries in the range of 94.3-106.1% and good precision with R.S.D.s of repeatability and intermediate precision less than 0.57% and 4.67%, respectively. The method was successfully applied to qualitative and quantitative determination of 20 P. kaempferi among the 54 samples collected from different areas. The results revealed that the commercial crude drugs were seriously confused and the developed HPLC assay could be used as a suitable qualitative and quantitative determination method for P. kaempferi.
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Affiliation(s)
- Peng Liu
- Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100083, China
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Jung HJ, Jeon HJ, Lim EJ, Ahn EK, Song YS, Lee S, Shin KH, Lim CJ, Park EH. Anti-angiogenic activity of the methanol extract and its fractions of Ulmus davidiana var. japonica. JOURNAL OF ETHNOPHARMACOLOGY 2007; 112:406-9. [PMID: 17428629 DOI: 10.1016/j.jep.2007.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2006] [Revised: 02/20/2007] [Accepted: 03/02/2007] [Indexed: 05/14/2023]
Abstract
This study aimed to elucidate anti-angiogenic activity of Ulmus davidiana var. japonica that has been widely used in folk medicine. The methanol extract (UDE) of Ulmus davidiana var. japonica concentration-dependently displayed a strong inhibition in the chick chorioallantoic membrane (CAM) angiogenesis. The n-butanol fraction of UDE and subsequent 30% MeOH subfraction were identified to be most responsible for the anti-angiogenic activity.
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Affiliation(s)
- Hyun-Joo Jung
- College of Pharmacy, Sookmyung Women's University, Seoul 140-742, Republic of Korea
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Affiliation(s)
- Zhe Geng
- Department of Chemistry and Open Laboratory of Chemical Biology, Institute of Molecular Technology for Drug Discovery and Synthesis, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
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Nagle DG, Zhou YD. Natural product-based inhibitors of hypoxia-inducible factor-1 (HIF-1). Curr Drug Targets 2006; 7:355-69. [PMID: 16515532 PMCID: PMC2908043 DOI: 10.2174/138945006776054979] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The transcription factor hypoxia-inducible factor-1 (HIF-1) regulates the expression of more than 70 genes involved in cellular adaptation and survival under hypoxic stress. Activation of HIF-1 is associated with numerous physiological and pathological processes that include tumorigenesis, vascular remodeling, inflammation, and hypoxia/ischemia-related tissue damage. Clinical studies suggested that HIF-1 activation correlates directly with advanced disease stages and treatment resistance among cancer patients. Preclinical studies support the inhibition of HIF-1 as a major molecular target for antitumor drug discovery. Considerable effort is underway, in government laboratories, industry and academia, to identify therapeutically useful small molecule HIF-1 inhibitors. Natural products (low molecular weight organic compounds produced by plants, microbes, and animals) continue to play a major role in modern antitumor drug discovery. Most of the compounds discovered to inhibit HIF-1 are natural products or synthetic compounds with structures that are based on natural product leads. Natural products have also served a vital role as molecular probes to elucidate the pathways that regulate HIF-1 activity. Natural products and natural product-derived compounds that inhibit HIF-1 are summarized in light of their biological source, chemical class, and effect on HIF-1 and HIF-mediated gene regulation. When known, the mechanism(s) of action of HIF-1 inhibitors are described. Many of the substances found to inhibit HIF-1 are non-druggable compounds that are too cytotoxic to serve as drug leads. The application of high-throughput screening methods, complementary molecular-targeted assays, and structurally diverse chemical libraries hold promise for the discovery of therapeutically useful HIF-1 inhibitors.
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Affiliation(s)
- Dale G. Nagle
- Joint Corresponding Authors to whom correspondence should be addressed.: Dale G. Nagle: Tel. (662) 915-7026. Fax: (662) 915-6975. ., Yu-Dong Zhou: Tel: (662) 915-1577. Fax: (662) 915-7062.
| | - Yu-Dong Zhou
- Joint Corresponding Authors to whom correspondence should be addressed.: Dale G. Nagle: Tel. (662) 915-7026. Fax: (662) 915-6975. ., Yu-Dong Zhou: Tel: (662) 915-1577. Fax: (662) 915-7062.
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Li KS, Gu XF, Li P, Zhang Y, Zhao YS, Yao ZJ, Qu NQ, Wang BY. Effect of pseudolaric acid B on gastric cancer cells: inhibition of proliferation and induction of apoptosis. World J Gastroenterol 2006; 11:7555-9. [PMID: 16437677 PMCID: PMC4727228 DOI: 10.3748/wjg.v11.i48.7555] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To examine the effect of pseudolaric acid B on the growth of human gastric cancer cell line, AGS, and its possible mechanism of action. METHODS Growth inhibition by pseudolaric acid B was analyzed using MTT assay. Apoptotic cells were detected using Hoechst 33258 staining, and confirmed by DNA fragmentation analysis. Western blot was used to detect the expression of apoptosis-regulated gene Bcl-2, caspase 3, and cleavage of poly (ADP-ribose) polymerase-1 (PARP-1). RESULTS Pseudolaric acid B inhibited the growth of AGS cells in a time- and dose-dependent manner by arresting the cells at G(2)/M phase, which was accompanied with a decrease in the levels of cdc2. AGS cells treated with pseudolaric acid B showed typical characteristics of apoptosis including chromatin condensation and DNA fragmentation. Moreover, treatment of AGS cells with pseudolaric acid B was also associated with decreased levels of the anti-apoptotic protein Bcl-2, activation of caspase-3, and proteolytic cleavage of PARP-1. CONCLUSION Pseudolaric acid B can dramatically suppress the AGS cell growth by inducing apoptosis after G(2)/M phase arrest. These findings are consistent with the possibility that G(2)/M phase arrest is mediated by the down-regulation of cdc2 levels. The data also suggest that pseudolaric acid B can trigger apoptosis by decreasing Bcl-2 levels and activating caspase-3 protease.
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Affiliation(s)
- Ke-Shen Li
- Department of Epidemiology, Harbin Medical University, Harbin 150086, Heilongjiang Province, China
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