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Zhou L, Wu K, Gao Y, Qiao R, Tang N, Dong D, Li XQ, Nong Q, Luo DQ, Xiao Q, Fan X, Duan Q, Cao W. Piperlonguminine attenuates renal fibrosis by inhibiting TRPC6. JOURNAL OF ETHNOPHARMACOLOGY 2023; 313:116561. [PMID: 37121453 DOI: 10.1016/j.jep.2023.116561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 04/16/2023] [Accepted: 04/28/2023] [Indexed: 05/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Liuwei Dihuang (LWDH) is a classic prescription that has been used to the treatment of "Kidney-Yin" deficiency syndrome for more than 1000 years in China. Recent studies have confirmed that LWDH can prevent the progression of renal fibrosis. Numerous studies have demonstrated the critical role that TRPC6 plays in the development of renal fibrosis. Due to the complex composition of LWDH and its remarkable therapeutic effect on renal fibrosis, it is possible to discover new active ingredients targeting TRPC6 for the treatment of renal fibrosis. AIM OF STUDY This study aimed to identify selective TRPC6 inhibitors from LWDH and evaluate their therapeutical effects on renal fibrosis. MATERIALS AND METHODS Computer-aided drug design was used to screen the biologically active ingredients of LWDH, and their affinities to human TRPC6 protein were detected by microcalorimetry. TRPC6, TRPC3, and TRPC7 over-expressed HEK293 cells were constructed, and the selective activities of the compounds on TRPC6 were determined by measuring [Ca2+]i in these cells. To establish an in vitro model of renal fibrosis, human renal proximal tubular epithelial HK-2 cells were stimulated with TGF-β1. The therapeutic effects of LWDH compounds on renal fibrosis were then tested by detecting the related proteins. TRPC6 was knocked-down in HK-2 cells to investigate the effects of LWDH active ingredients on TRPC6. Finally, a unilateral ureteral obstruction model of renal fibrosis was established to test the therapeutic effect. RESULTS From hundreds of LWDH ingredients, 64 active components with oral bioavailability ≥30% and drug-likeness index ≥0.18 were acquired. A total of 10 active components were obtained by molecular docking with TRPC6 protein. Among them, 4 components had an affinity with TRPC6. Piperlonguminine (PLG) had the most potent affinity with TRPC6 and blocking effect on TRPC6-mediated Ca2+ entry. A 100 μM of PLG showed no detectable inhibition on TRPC1, TRPC3, TRPC4, TRPC5, or TRPC7-mediated Ca2+ influx into cells. In vitro results indicated that PLG concentration-dependently inhibited the abnormally high expression of α-smooth muscle actin (α-SMA), collagen I, vimentin, and TRPC6 in TGF-β1-induced HK-2 cells. Consistently, PLG also could not further inhibit TGF-β1-induced expressions of these protein biomarkers in TRPC6 knocked-down HK-2 cells. In vivo, PLG dose-dependently reduced urinary protein, serum creatinine, and blood urea nitrogen levels in renal fibrosis mice and markedly alleviated fibrosis and the expressions of α-SMA, collagen I, vimentin, and TRPC6 in kidney tissues. CONCLUSION Our results showed that PLG had anti-renal fibrosis effects by selectively inhibiting TRPC6. PLG might be a promising therapeutic agent for the treatment of renal fibrosis.
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Affiliation(s)
- Lei Zhou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Kehan Wu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Yuxuan Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Ruizhi Qiao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Na Tang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Dianchao Dong
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Xiao-Qiang Li
- Department of Pharmacology and Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, School of Pharmacy, Fourth Military Medical University, Xi'an, 710000, China
| | - Qiuna Nong
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Ding-Qiang Luo
- Shaanxi Institute for Food and Drug Control, Xi'an, 710065, China
| | - Qianhan Xiao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Xin Fan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Qimei Duan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China.
| | - Wei Cao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, 712100, China; Department of Pharmacology and Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, School of Pharmacy, Fourth Military Medical University, Xi'an, 710000, China.
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Piperlongumin Improves Survival in the Mouse Model of Sepsis: Effect on Coagulation Factors and Lung Inflammation. Inflammation 2022; 45:2513-2528. [PMID: 35831643 PMCID: PMC9281243 DOI: 10.1007/s10753-022-01709-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/22/2022] [Indexed: 11/05/2022]
Abstract
Excessive inflammation and coagulation contribute to high morbidity and mortality in sepsis. Many studies have indicated the role of piperlongumine (PL) in anti-inflammation, but its effect on coagulation remains uncertain. Here, we explore whether PL could moderate coagulation indicators and alleviate lung inflammation during sepsis. RAW264.7 cells were induced by lipopolysaccharide (LPS) and treated with PL. Inflammatory and coagulation indicators, cell function and signaling, were evaluated in cells. Cecal ligation and puncture (CLP) mice were treated with PL by gavage. The harvested lungs and plasma were used to assess inflammation and coagulation indicators. As a result, PL increased the survival rate and reduced the concentrations of tissue factor (TF), plasminogen activator inhibitor 1 (PAI-1), thrombin-antithrombin complex (TAT), D-dimer, interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF)-α in CLP mice, with fibrinogen in reverse. Moreover, the PL alleviated inflammation, fibrin deposition, and lung injury in the lungs of CLP mice. In vitro, PL downregulated the expression of TF, PAI-1, IL-6, TNF-α, and IL-1β in RAW264.7 cells induced by LPS. Furthermore, PL inhibited the phosphorylation of the AKT/mTOR signaling pathway's key proteins and suppressed the nuclear translocation of p-STAT3 in LPS-stimulated RAW264.7 cells. In conclusion, this study suggests that PL may modulate coagulation indicators and improve lung inflammation through AKT/mTOR signaling pathway in sepsis.
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Yadav V, Krishnan A, Baig MS, Majeed M, Nayak M, Vohora D. Decrypting the interaction pattern of Piperlongumine with calf thymus DNA and dodecamer d(CGCGAATTCGCG) 2 B-DNA: Biophysical and molecular docking analysis. Biophys Chem 2022; 285:106808. [PMID: 35358908 DOI: 10.1016/j.bpc.2022.106808] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/19/2022] [Accepted: 03/20/2022] [Indexed: 12/20/2022]
Abstract
The mechanisms of interaction of DNA with pharmacological molecules are critical to understanding their therapeutic actions on physiological systems. Piperlongumine is widely studied for its anticancer potential. Multi-spectrometry, calorimetry and in silico studies were employed to study the interaction of piperlongumine and calf thymus DNA. UV-Vis spectroscopy illustrated a hyperchromic pattern in spectra of the calf thymus DNA-piperlongumine complex, while fluorescent quenching was observed in emission spectral studies. Competitive displacement assay demonstrated higher displacement and binding constant for DNA-rhodamine B complex by piperlongumine than DNA-methylene blue complex. Differential scanning calorimetry presented non-significant changes in melting temperature and molecular docking presented the precise interaction site of piperlongumine with calf thymus DNA at minor groove. Further, piperlongumine treatment did not result in pBluescript KS plasmid DNA cleavage as revealed from the DNA topology assay. All these experiments confirmed the binding of piperlongumine with DNA through minor groove binding mode.
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Affiliation(s)
- Vaishali Yadav
- Neurobehavioral Pharmacology Laboratory, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Anuja Krishnan
- Department of Molecular Medicine, School of Interdisciplinary Science and Technology, Jamia Hamdard, New Delhi 110062, India
| | - Mirza Sarwar Baig
- Department of Molecular Medicine, School of Interdisciplinary Science and Technology, Jamia Hamdard, New Delhi 110062, India
| | - Muhammed Majeed
- Sami-Sabinsa Group Limited, Bengaluru 560058, Karnataka, India
| | - Mahadeva Nayak
- Sami-Sabinsa Group Limited, Bengaluru 560058, Karnataka, India
| | - Divya Vohora
- Neurobehavioral Pharmacology Laboratory, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India.
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Dong XH, Peng C, Zhang YY, Jiang Y, Yang LJ, He JB, Tao X, Zhang C, Chen AF, Xie HH. Low-Dose Piperlongumine Rescues Impaired Function of Endothelial Progenitor Cells and Reduces Cerebral Ischemic Injury in High-Fat Diet-Fed Mice. Front Pharmacol 2021; 12:689880. [PMID: 34867315 PMCID: PMC8634707 DOI: 10.3389/fphar.2021.689880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 10/22/2021] [Indexed: 12/20/2022] Open
Abstract
It is of great clinical significance to develop potential novel strategies to prevent cardio-cerebrovascular complications in patients with hyperlipidemia. Vascular Endothelial integrity and function play a key role in the prevention of cardio-cerebrovascular diseases. Endothelial progenitor cells (EPCs) can home to sites of ischemic injury and promote endothelial regeneration and neovascularization. Hypercholesterolemia impairs the function of EPC. The present study attempted to identify the effect of piperlongumine on EPCs’ angiogenic potential and cerebral ischemic injury in high-fat diet-fed (HFD-fed) mice. Here, we showed that treatment with low-does piperlongumine (0.25 mg/kg/day) for 8 weeks significantly improved EPCs function and reduced the cerebral ischemic injury (both infarct volumes and neurobehavioral outcomes) in HFD-fed mice. In addition, low-dose piperlongumine administration increased intracellular NO level and reduced intracellular O2- level in EPCs of HFD-fed mice. Moreover, incubation with piperlongumine (1.0 μM, 24 h) reduced thrombospondin-1/2 (TSP-1/2, a potent angiogenesis inhibitor) expression levels in EPCs from HFD-fed mice, increased the therapeutic effect of EPC from HFD-fed mice on cerebral ischemic injury reduction and angiogenesis promotion in HFD-fed mice, and the donor derived EPCs homed to the recipient ischemic brain. In conclusion, low-dose piperlongumine can enhance EPCs’ angiogenic potential and protect against cerebral ischemic injury in HFD-fed mice. It is implied that treatment with low-dose piperlongumine might be a potential option to prevent ischemic diseases (including stroke) in patients with hyperlipidemia, and priming with piperlongumine might be a feasible way to improve the efficacy of EPC-based therapy for ischemic diseases.
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Affiliation(s)
- Xiao-Hui Dong
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Pharmacy, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Cheng Peng
- School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu-Yi Zhang
- Department of Pharmacy, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu Jiang
- Department of Pharmacy, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Li-Jun Yang
- School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia-Bei He
- School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xia Tao
- Department of Pharmacy, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Chuan Zhang
- School of Medicine, Shanghai University, Shanghai, China
| | - Alex F Chen
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - He-Hui Xie
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhu P, Qian J, Xu Z, Meng C, Zhu W, Ran F, Zhang W, Zhang Y, Ling Y. Overview of piperlongumine analogues and their therapeutic potential. Eur J Med Chem 2021; 220:113471. [PMID: 33930801 DOI: 10.1016/j.ejmech.2021.113471] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/29/2021] [Accepted: 04/10/2021] [Indexed: 01/18/2023]
Abstract
Natural products have long been an important source for discovery of new drugs to treat human diseases. Piperlongumine (PL) is an amide alkaloid isolated from Piper longum L. (long piper) and other piper plants and has received widespread attention because of its diverse biological activities. A large number of PL derivatives have been designed, synthesized and assessed in many pharmacological functions, including antiplatelet aggregation, neuroprotective activities, anti-diabetic activities, anti-inflammatory activities, anti-senolytic activities, immune activities, and antitumor activities. Among them, the anti-tumor effects and application of PL and its derivatives are most extensively studied. We herein summarize the development of PL derivatives, the structure and activity relationships (SARs), and their therapeutic potential on the treatments of various diseases, especially against cancer. We also discussed the challenges and future directions associated with PL and its derivatives in these indications.
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Affiliation(s)
- Peng Zhu
- Medical School, Nantong University, Nantong, 226001, China; School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China; State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau
| | - Jianqiang Qian
- Medical School, Nantong University, Nantong, 226001, China; School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China
| | - Zhongyuan Xu
- Medical School, Nantong University, Nantong, 226001, China; School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China
| | - Chi Meng
- School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China
| | - Weizhong Zhu
- Medical School, Nantong University, Nantong, 226001, China; School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China
| | - Fansheng Ran
- School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China
| | - Wei Zhang
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau.
| | - Yanan Zhang
- Medical School, Nantong University, Nantong, 226001, China; School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China.
| | - Yong Ling
- Medical School, Nantong University, Nantong, 226001, China; School of Pharmacy and Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, China.
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Tran TT, Tran PH. Lead Compounds in the Context of Extracellular Vesicle Research. Pharmaceutics 2020; 12:E716. [PMID: 32751565 PMCID: PMC7463631 DOI: 10.3390/pharmaceutics12080716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/26/2020] [Accepted: 07/28/2020] [Indexed: 02/08/2023] Open
Abstract
Studies of small extracellular vesicles (sEVs), known as exosomes, have been flourishing in the last decade with several achievements, from advancing biochemical knowledge to use in biomedical applications. Physiological changes of sEVs due to the variety of cargos they carry undoubtedly leave an impression that affects the understanding of the mechanism underlying disease and the development of sEV-based shuttles used for treatments and non-invasive diagnostic tools. Indeed, the remarkable properties of sEVs are based on their nature, which helps shield them from recognition by the immune system, protects their payload from biochemical degradation, and contributes to their ability to translocate and convey information between cells and their inherent ability to target disease sites such as tumors that is valid for sEVs derived from cancer cells. However, their transport, biogenesis, and secretion mechanisms are still not thoroughly clear, and many ongoing investigations seek to determine how these processes occur. On the other hand, lead compounds have been playing critical roles in the drug discovery process and have been recently employed in studies of the biogenesis and secretion of sEVs as external agents, affecting sEV release and serving as drug payloads in sEV drug delivery systems. This article gives readers an overview of the roles of lead compounds in these two research areas of sEVs, the rising star in studies of nanoscale medicine.
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Affiliation(s)
- Thao T.D. Tran
- Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam;
- The Faculty of Pharmacy, Duy Tan University, Danang 550000, Vietnam
| | - Phuong H.L. Tran
- Deakin University, School of Medicine, IMPACT, Institute for innovation in Physical and Mental health and Clinical Translation, Geelong, Australia
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An improved synthesis of piperlongumine and the preliminary imaging evaluation on tumor targeting. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07117-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Zhao Z, Song H, Xie J, Liu T, Zhao X, Chen X, He X, Wu S, Zhang Y, Zheng X. Research progress in the biological activities of 3,4,5-trimethoxycinnamic acid (TMCA) derivatives. Eur J Med Chem 2019; 173:213-227. [PMID: 31009908 PMCID: PMC7115657 DOI: 10.1016/j.ejmech.2019.04.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 01/02/2023]
Abstract
TMCA (3,4,5-trimethoxycinnamic acid) ester and amide are privileged structural scaffolds in drug discovery which are widely distributed in natural products and consequently produced diverse therapeutically relevant pharmacological functions. Owing to the potential of TMCA ester and amide analogues as therapeutic agents, researches on chemical syntheses and modifications have been carried out to drug-like candidates with broad range of medicinal properties such as antitumor, antiviral, CNS (central nervous system) agents, antimicrobial, anti-inflammatory and hematologic agents for a long time. At the same time, SAR (structure-activity relationship) studies have draw greater attention among medicinal chemists, and many of the lead compounds were derived for various disease targets. However, there is an urgent need for the medicinal chemists to further exploit the precursor in developing chemical entities with promising bioactivity and druggability. This review concisely summarizes the synthesis and biological activity for TMCA ester and amide analogues. It also comprehensively reveals the relationship of significant biological activities along with SAR studies. 3,4,5-Trimethoxycinnamic acid (TMCA) derivatives show applications in different pathophysiological conditions due to its privileged structural scaffolds. Natural derived TMCA analogues and chemically modified TMCA ester and amide analogues and their bioactivities are focused in this review. Additionally, it also comprehensively summarized the relationship of significant biological activities along with SAR studies of synthetic TMCA derivatives.
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Affiliation(s)
- Zefeng Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China
| | - Huanhuan Song
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China; Biomedicine Key Laboratory of Shaanxi Province, Northwest University, Xi'an, Shaanxi, 710069, China
| | - Jing Xie
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China
| | - Tian Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China
| | - Xue Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China
| | - Xufei Chen
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China
| | - Xirui He
- Honghui Hospital, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Shaoping Wu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China; Biomedicine Key Laboratory of Shaanxi Province, Northwest University, Xi'an, Shaanxi, 710069, China.
| | - Yongmin Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China; Biomedicine Key Laboratory of Shaanxi Province, Northwest University, Xi'an, Shaanxi, 710069, China; Sorbonne Université, Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, 4 place Jussieu, 75005, Paris, France
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, 229 Taibai Road, Xi'an, 710069, China.
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Wu X, Liu Y, An J, Li J, Lv W, Geng S, Zhang Y. Piperlongumine inhibits angiotensin II-induced extracellular matrix expression in cardiac fibroblasts. J Cell Biochem 2018; 119:10358-10364. [PMID: 30145839 DOI: 10.1002/jcb.27379] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 07/02/2018] [Indexed: 12/12/2022]
Abstract
Piperlongumine (PL), a single component isolated from Piper longum, has been reported to possess anti-inflammatory, antibacterial, antiangiogenic, antioxidant, antitumor, and antidiabetic activities. However, its role in cardiac fibrosis remains to be clarified. Therefore, we determined the effects of PL on cardiac fibroblasts (CFs) proliferation, and extracellular matrix (ECM) production under angiotensin II (Ang II) conditions, and further investigated the underlying molecular mechanism. Our data revealed that PL inhibited the proliferation and migration of CFs induced by Ang II. In addition, PL blocked the transformation of CFs to myofibroblasts induced by Ang II, as well as decreased cellular reactive oxygen species (ROS) production and malondialdehyde level in Ang II-stimulated CFs. Furthermore, PL significantly suppressed the Ang II-increased phosphorylation of extracellular regulated protein kinase 1/2 (ERK1/2) in CFs. Taken together, the results of the current study demonstrated that PL inhibits Ang II-induced cell proliferation, migration, and ECM expression in CFs through the inactivation of the ERR1/2 signaling pathway. These data strongly suggest that PL may be a promising therapeutic candidate for the treatment of cardiac fibrosis.
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Affiliation(s)
- Xianchuang Wu
- Department of Pharmacy, Huaihe Hospital, Henan University, Kaifeng, China
| | - Yuxin Liu
- Department of Pharmacy, Huaihe Hospital, Henan University, Kaifeng, China
| | - Jihong An
- Department of Pharmacy, Huaihe Hospital, Henan University, Kaifeng, China
| | - Jiahuan Li
- College of University, Henan University, Kaifeng, China
| | - Weiling Lv
- Department of Pharmacy, Huaihe Hospital, Henan University, Kaifeng, China
| | - Shengnan Geng
- College of University, Henan University, Kaifeng, China
| | - Yongzhou Zhang
- Department of Pharmacy, Huaihe Hospital, Henan University, Kaifeng, China
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Bharadwaj U, Eckols TK, Xu X, Kasembeli MM, Chen Y, Adachi M, Song Y, Mo Q, Lai SY, Tweardy DJ. Small-molecule inhibition of STAT3 in radioresistant head and neck squamous cell carcinoma. Oncotarget 2018; 7:26307-30. [PMID: 27027445 PMCID: PMC5041982 DOI: 10.18632/oncotarget.8368] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 03/14/2016] [Indexed: 12/17/2022] Open
Abstract
While STAT3 has been validated as a target for treatment of many cancers, including head and neck squamous cell carcinoma (HNSCC), a STAT3 inhibitor is yet to enter the clinic. We used the scaffold of C188, a small-molecule STAT3 inhibitor previously identified by us, in a hit-to-lead program to identify C188-9. C188-9 binds to STAT3 with high affinity and represents a substantial improvement over C188 in its ability to inhibit STAT3 binding to its pY-peptide ligand, to inhibit cytokine-stimulated pSTAT3, to reduce constitutive pSTAT3 activity in multiple HNSCC cell lines, and to inhibit anchorage dependent and independent growth of these cells. In addition, treatment of nude mice bearing xenografts of UM-SCC-17B, a radioresistant HNSCC line, with C188-9, but not C188, prevented tumor xenograft growth. C188-9 treatment modulated many STAT3-regulated genes involved in oncogenesis and radioresistance, as well as radioresistance genes regulated by STAT1, due to its potent activity against STAT1, in addition to STAT3. C188-9 was well tolerated in mice, showed good oral bioavailability, and was concentrated in tumors. Thus, C188-9, either alone or in combination with radiotherapy, has potential for use in treating HNSCC tumors that demonstrate increased STAT3 and/or STAT1 activation.
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Affiliation(s)
- Uddalak Bharadwaj
- Department of Infectious Disease, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - T Kris Eckols
- Department of Infectious Disease, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Xuejun Xu
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, China
| | - Moses M Kasembeli
- Department of Infectious Disease, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yunyun Chen
- Department of Head and Neck Surgery, Division of Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Makoto Adachi
- Department of Head and Neck Surgery, Division of Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yongcheng Song
- Department of Pharmacology, Baylor College of Medicine, Houston, Texas, USA
| | - Qianxing Mo
- Department of Medicine, Division of Biostatistics, Dan L. Duncan Cancer Center, Section of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA
| | - Stephen Y Lai
- Department of Head and Neck Surgery, Division of Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - David J Tweardy
- Department of Infectious Disease, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Molecular & Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Zou Y, Yan C, Zhang H, Xu J, Zhang D, Huang Z, Zhang Y. Synthesis and evaluation of N-heteroaromatic ring-based analogs of piperlongumine as potent anticancer agents. Eur J Med Chem 2017; 138:313-319. [PMID: 28686911 DOI: 10.1016/j.ejmech.2017.06.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 06/22/2017] [Accepted: 06/23/2017] [Indexed: 12/11/2022]
Abstract
Piperlongumine (PL) selectively targets a wide spectrum of cancer cells and induces their death by triggering various pathways, including apoptosis, necrosis and autophagy. However, the poor solubility is a serious concern for intensive study and clinical application. We synthesized its analogs 1-9 by replacement of the trimethoxyphenyl of PL with an N-heteroaromatic ring and/or not introduction of 2-Cl. These compounds improved aqueous solubility and displayed potent anticancer activity. The most active compound 9 selectively enhanced ROS levels in colon cancer cells and inhibited the cell proliferation but sparing non-tumor colon cells. Importantly, 9 significantly repressed tumor growth in an HCT-116 xenograft mouse model, suggesting that these N-heteroaromatic ring-based analogs of PL warrant further investigation.
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Affiliation(s)
- Yu Zou
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, PR China
| | - Chang Yan
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, PR China
| | - Huibin Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China
| | - Dayong Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, PR China
| | - Zhangjian Huang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yihua Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, PR China
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12
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Zhang Y, Ma H, Wu Y, Wu Z, Yao Z, Zhang W, Zhuang C, Miao Z. Novel non-trimethoxylphenyl piperlongumine derivatives selectively kill cancer cells. Bioorg Med Chem Lett 2017; 27:2308-2312. [PMID: 28434764 DOI: 10.1016/j.bmcl.2017.04.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 11/21/2022]
Abstract
Piperlongumine (PL) is a natural alkaloid with broad biological activities. Twelve analogues have been designed and synthesized with non-substituted benzyl rings or heterocycles in this work. Most of the compounds showed better anticancer activities than the parent PL without apparent toxicity in normal cells. Elevation of cellular ROS levels was one of the main anticancer mechanisms of these compounds. Cell apoptosis and cell cycle arrest for the best compound ZM90 were evaluated and similar mechanism of action with PL was demonstrated. The SAR was also characterized, providing worthy directions for further optimization of PL compounds.
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Affiliation(s)
- Youjun Zhang
- Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Hao Ma
- Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China; Ningxia Medical University, Yinchuan 750004, China
| | - Yuelin Wu
- Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Zhongli Wu
- Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | | | - Wannian Zhang
- Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China; Ningxia Medical University, Yinchuan 750004, China
| | - Chunlin Zhuang
- Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China.
| | - Zhenyuan Miao
- Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China.
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13
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Synthesis of piplartine analogs and preliminary findings on structure–antimicrobial activity relationship. Med Chem Res 2017. [DOI: 10.1007/s00044-016-1774-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Yao Y, Sun Y, Shi M, Xia D, Zhao K, Zeng L, Yao R, Zhang Y, Li Z, Niu M, Xu K. Piperlongumine induces apoptosis and reduces bortezomib resistance by inhibiting STAT3 in multiple myeloma cells. Oncotarget 2016; 7:73497-73508. [PMID: 27634873 PMCID: PMC5341994 DOI: 10.18632/oncotarget.11988] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 09/02/2016] [Indexed: 11/25/2022] Open
Abstract
Effective new therapies are urgently needed for the treatment of multiple myeloma (MM), an incurable hematological malignancy. In this study, we evaluated the effects of piperlongumine on MM cell proliferation both in vivo and in vitro. Piperlongumine inhibited the proliferation of MM cells by inducing cell apoptosis and blocking osteoclastogenesis. Notably, piperlongumine also reduced bortezomib resistance in MM cells. In a disseminated MM mouse model, piperlongumine prolonged the survival of tumor-bearing mice without causing any obvious toxicity. Mechanistically, piperlongumine inhibited the STAT3 signal pathway in MM cells by binding directly to the STAT3 Cys712 residue. These findings suggest that the clinical use of piperlongumine to overcome bortezomib resistance in MM should be evaluated.
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Affiliation(s)
- Yao Yao
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Yueyue Sun
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Min Shi
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Dandan Xia
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Kai Zhao
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Lingyu Zeng
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Ruosi Yao
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Ying Zhang
- Laboratory of Pathology, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Zhenyu Li
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Mingshan Niu
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
| | - Kailin Xu
- Blood Diseases Institute, Xuzhou Medical College, Xuzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou, China
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15
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Ain QU, Khan H, Mubarak MS, Pervaiz A. Plant Alkaloids as Antiplatelet Agent: Drugs of the Future in the Light of Recent Developments. Front Pharmacol 2016; 7:292. [PMID: 27713699 PMCID: PMC5032615 DOI: 10.3389/fphar.2016.00292] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 08/22/2016] [Indexed: 11/13/2022] Open
Abstract
An alkaloid is a class of naturally occurring organic nitrogen-containing compounds that are frequently found in the plant kingdom. Many alkaloids are valuable medicinal agents that can be utilized to treat various diseases including malaria, diabetics, cancer, cardiac dysfunction etc. Similarly, platelet aggregation beyond the purpose of homeostasis is the underlying cause of blood clotting related diseases. This review presents a thorough understanding of alkaloids as antiplatelet agents with a possible mechanism of action based on the literature of the last decade. In addition, this review will address the antiplatelet activity of alkaloids and their medicinal usage as potent antiplatelet agents with a description of structural relationship activity and possible lead compounds for future drug discovery.
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Affiliation(s)
- Qurrat-Ul- Ain
- Department of Pharmacy, Abdul Wali Khan University Mardan Mardan, Pakistan
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan Mardan, Pakistan
| | | | - Aini Pervaiz
- Department of Pharmacy, Abdul Wali Khan University Mardan Mardan, Pakistan
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16
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New urushiols with platelet aggregation inhibitory activities from resin of Toxicodendron vernicifluum. Fitoterapia 2016; 112:38-44. [PMID: 27156871 DOI: 10.1016/j.fitote.2016.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 11/27/2022]
Abstract
Eight new urushiol-type compounds (1-7b), along with seven known compounds were isolated from the resin of Toxicodendron vernicifluum Stokes. Their structures were determined by extensive spectroscopic methods, included (1)H NMR, (13)C NMR, HMQC, HMBC, HRESIMS, EI-MS in combination with CD methods. All the compounds except 7a and 7b were evaluated for their anti-platelet aggregation activities in vitro. Among them, compound 5 (IC50=5.12±0.85μmol/L), with a vic-diol moiety in the long alkyl chain showed the most potent inhibitory of platelet aggregation activity induced by ADP. In addition, compound 6 showed the effect of anti-platelet aggregation induced by AA with the IC50 value of 3.09±0.70μmol/L. Thus, these compounds might be the active components to the traditional use of Resina Toxicodendri for breaking up blood stasis, which could be related to the anti-platelet aggregation.
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17
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18
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Yuan H, Houck KL, Tian Y, Bharadwaj U, Hull K, Zhou Z, Zhou M, Wu X, Tweardy DJ, Romo D, Fu X, Zhang Y, Zhang J, Dong JF. Piperlongumine Blocks JAK2-STAT3 to Inhibit Collagen-Induced Platelet Reactivity Independent of Reactive Oxygen Species. PLoS One 2015; 10:e0143964. [PMID: 26645674 PMCID: PMC4672935 DOI: 10.1371/journal.pone.0143964] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 11/11/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Piperlongumine (PL) is a compound isolated from the piper longum plant. It possesses anti-cancer activities through blocking the transcription factor STAT3 and by inducing reactive oxygen species (ROS) in cancer, but not normal cells. It also inhibits platelet aggregation induced by collagen, but the underlying mechanism is not known. OBJECTIVE We conducted in vitro experiments to test the hypothesis that PL regulates a non-transcriptional activity of STAT3 to specifically reduce the reactivity of human platelets to collagen. RESULTS PL dose-dependently blocked collagen-induced platelet aggregation, calcium influx, CD62p expression and thrombus formation on collagen with a maximal inhibition at 100 μM. It reduced platelet microvesiculation induced by collagen. PL blocked the activation of JAK2 and STAT3 in collagen-stimulated platelets. This inhibitory effect was significantly reduced in platelets pretreated with a STAT3 inhibitor. Although PL induced ROS production in platelets; quenching ROS using excessive reducing agents: 20 μM GSH and 0.5 mM L-Cysteine, did not block the inhibitory effects. The NADPH oxidase inhibitor Apocynin also had no effect. CONCLUSIONS PL inhibited collagen-induced platelet reactivity by targeting the JAK2-STAT3 pathway. We also provide experimental evidence that PL and collagen induce different oxidants that have differential effects on platelets. Studying these differential effects may uncover new mechanisms of regulating platelet functions by oxidants in redox signals.
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Affiliation(s)
- Hengjie Yuan
- Bloodworks Northwest Research Institute, Seattle, Washington, United States of America
- Tianjin Neurological Institute, General Hospital, Tianjin Medical University, Tianjin, China
| | - Katie L. Houck
- Bloodworks Northwest Research Institute, Seattle, Washington, United States of America
| | - Ye Tian
- Bloodworks Northwest Research Institute, Seattle, Washington, United States of America
- Tianjin Neurological Institute, General Hospital, Tianjin Medical University, Tianjin, China
| | - Uddalak Bharadwaj
- Division of Infectious Disease, Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Ken Hull
- The Natural Products LINCHPIN Laboratory and Department of Chemistry, Texas A & M University, College Station, Texas, United States of America
| | - Zhou Zhou
- Bloodworks Northwest Research Institute, Seattle, Washington, United States of America
| | - Mingzhao Zhou
- The Natural Products LINCHPIN Laboratory and Department of Chemistry, Texas A & M University, College Station, Texas, United States of America
| | - Xiaoping Wu
- Bloodworks Northwest Research Institute, Seattle, Washington, United States of America
| | - David J. Tweardy
- Division of Infectious Disease, Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Daniel Romo
- The Natural Products LINCHPIN Laboratory and Department of Chemistry, Texas A & M University, College Station, Texas, United States of America
| | - Xiaoyun Fu
- Bloodworks Northwest Research Institute, Seattle, Washington, United States of America
- Division of Hematology, Department of Medicine, University of Washington, School of Medicine, Seattle, Washington, United States of America
| | - Yanjun Zhang
- Medicine Division, Imperial College London, London, United Kingdom
| | - Jianning Zhang
- Tianjin Neurological Institute, General Hospital, Tianjin Medical University, Tianjin, China
| | - Jing-fei Dong
- Bloodworks Northwest Research Institute, Seattle, Washington, United States of America
- Division of Hematology, Department of Medicine, University of Washington, School of Medicine, Seattle, Washington, United States of America
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19
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Seo YH, Kim JK, Jun JG. Synthesis and biological evaluation of piperlongumine derivatives as potent anti-inflammatory agents. Bioorg Med Chem Lett 2014; 24:5727-5730. [PMID: 25453809 DOI: 10.1016/j.bmcl.2014.10.054] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 09/30/2014] [Accepted: 10/17/2014] [Indexed: 10/24/2022]
Abstract
Piperlongumine (PL) and its derivatives were synthesized by the direct reaction between acid chloride of 3,4,5-trimethoxycinnamic acid and various amides/lactams. Later their anti-inflammatory effects were evaluated in lipopolysaccharide (LPS)-induced RAW-264.7 macrophages. Of the piperlogs prepared in this study, the maximum (91%) inhibitory activity was observed with PL (IC50=3 μM) but showed cytotoxicity whereas compound 3 (IC50=6 μM) which possess α,β-unsaturated γ-butyrolactam moiety offered good level (65%) of activity with no cytotoxicity. This study revealed that amide/lactam moiety connected to cinnamoyl group with minimum 3 carbon chain length and α,β-unsaturation is fruitful to show potent anti-inflammatory activity.
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Affiliation(s)
- Young Hwa Seo
- Department of Chemistry and Institute of Applied Chemistry, Hallym University, Chuncheon 200-702, Republic of Korea
| | - Jin-Kyung Kim
- Department of Biomedical Science, College of Natural Science, Catholic University of Daegu, Gyeungsan-Si 700-702, Republic of Korea
| | - Jong-Gab Jun
- Department of Chemistry and Institute of Applied Chemistry, Hallym University, Chuncheon 200-702, Republic of Korea.
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20
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Yao L, Chen HP, Ma Q. Piperlongumine alleviates lupus nephritis in MRL-Fas(lpr) mice by regulating the frequency of Th17 and regulatory T cells. Immunol Lett 2014; 161:76-80. [PMID: 24837470 DOI: 10.1016/j.imlet.2014.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/05/2014] [Accepted: 05/06/2014] [Indexed: 10/25/2022]
Abstract
Recent data have shown that piperlongumine (PL), an important component of Piper longum fruits, is known to possess anti-inflammatory and vascular-protective activities. This study aimed to examine the therapeutic effects and underlying mechanisms of PL on lupus-prone MRL-Fas(lpr) mice. Female MRL-Fas(lpr) mice were intraperitoneally treated with PL (2.4 mg kg(-1) d(-1)) for 10 weeks, and the proteinuria level was biweekly monitored. After the mice were euthanized, serum biochemical parameters and renal damage were determined. Splenocytes of MRL-Fas(lpr) mice were isolated for in vitro study. Treatment of the mice with PL significantly attenuated the progression of proteinuria and glomerulonephritis. The improvement was accompanied by decreased serum levels of nephritogenic anti-dsDNA antibodies, IL-6, IL-17, IL-23 and TNF-α. Treatment of the mice with PL suppressed the frequency of Th17 cells and increased the regulatory T cells (Tregs). In vitro, the levels of IL-6, IL-17, IL-23 and TNF-α were significantly decreased in the cultures of splenocytes from PL-treated mice compared with those from vehicle-treated mice. In addition, PL treatment impeded activation of the JAK/STAT3 signaling in splenocytes. Of great important, the survival of MRL-Fas(lpr) mice were improved by PL treatment. In summary, PL effectively ameliorates lupus syndrome in MRL-Fas(lpr) mice by suppressing the pathogenic Th17 cells and increasing the Tregs as well as inhibiting activation of the JAK/STAT3 signaling pathway. This study sheds new light on the immune-modulatory role of PL.
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Affiliation(s)
- Lan Yao
- Department of Nephrology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Hai-ping Chen
- Department of Nephrology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.
| | - Qing Ma
- Department of Nephrology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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21
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Ryu J, Kim MJ, Kim TO, Huh TL, Lee SE. Piperlongumine as a potential activator of AMP-activated protein kinase in HepG2 cells. Nat Prod Res 2014; 28:2040-3. [PMID: 24853732 DOI: 10.1080/14786419.2014.919283] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AMP-activated protein kinase (AMPK) is a key regulator of fatty acid biosynthesis and fatty acid oxidation throughout the body. Piperlongumine (PL) isolated from Piper longum (L.) was shown to potently upregulate activation of AMPK via phosphorylation and inactivation of acetyl-CoA carboxylases in cultured HepG2 cells, presumably enhancing the transfer of fatty acids into mitochondrial cells by inhibiting malonyl-CoA production. PL showed cytotoxicity on HepG2 cell growth at the concentration of 5 μM of PL, while more than 80% of HepG2 cells were survived at the concentration of 2 μM of PL. Overall, the results of this study indicate that PL activates AMPK phosphorylation and possesses cytotoxicity in HepG2 cells.
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Affiliation(s)
- Jahee Ryu
- a School of Life Science and Biotechnology, Kyungpook National University , Daegu 702-701 , Korea
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22
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Ku SK, Kim JA, Bae JS. Vascular barrier protective effects of piperlonguminine in vitro and in vivo. Inflamm Res 2014; 63:369-79. [PMID: 24468889 DOI: 10.1007/s00011-014-0708-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 12/29/2013] [Accepted: 01/12/2014] [Indexed: 01/05/2023] Open
Abstract
AIM AND OBJECTIVE The nuclear DNA binding protein known as high-mobility group box 1 (HMGB1) acts as a late mediator of severe vascular inflammatory conditions, such as sepsis and septic shock. Piperlonguminine (PL), an important component of Piper longum fruit, is known to exhibit anti-hyperlipidemic, anti-platelet, and anti-melanogenesis activities. However, little is known about its effects on HMGB1-mediated inflammatory response. METHODS We investigated the effects of PL on HMGB1-mediated inflammatory response by monitoring the effects of PL on lipopolysaccharide or cecal ligation and puncture (CLP)-mediated release of HMGB1, as well as on the modulation of HMGB1-mediated inflammatory responses. RESULTS According to our data, PL caused inhibition of the release of HMGB1 and downregulation of HMGB1-dependent inflammatory responses in human endothelial cells. PL also inhibited HMGB1-mediated hyperpermeability and leukocyte migration in mice. In addition, treatment with PL reduced the CLP-induced release of HMGB1 and sepsis-related mortality. CONCLUSION These results indicate that PL could be a candidate therapeutic agent for various severe vascular inflammatory diseases via inhibition of the HMGB1 signaling pathway.
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Affiliation(s)
- Sae-Kwang Ku
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan, 712-715, Republic of Korea
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23
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Liu Y, Chang Y, Yang C, Sang Z, Yang T, Ang W, Ye W, Wei Y, Gong C, Luo Y. Biodegradable nanoassemblies of piperlongumine display enhanced anti-angiogenesis and anti-tumor activities. NANOSCALE 2014; 6:4325-37. [PMID: 24622772 DOI: 10.1039/c3nr06599e] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Piperlongumine (PL) shows an inhibitory effect on tumor growth; however, lipophilicity has restricted its further applications. Nanotechnology provides an effective method to overcome the poor water solubility of lipophilic drugs. Polymeric micelles with small particle size can passively target tumors by the enhanced permeability and retention (EPR) effect, thus improving their anti-tumor effects. In this study, to improve the water solubility and anti-tumor activity of PL, PL encapsulated polymeric micelles (PL micelles) were prepared by a solid dispersion method. The prepared PL micelles showed a small particle size and high encapsulation efficiency, which could be lyophilized into powder, and the re-dissolved PL micelles are homogenous and stable in water. In addition, a sustained release behavior of PL micelles was observed in vitro. Encapsulation of PL into polymeric micelles could increase the cytotoxicity, cellular uptake, reactive oxygen species (ROS) and oxidized glutathione (GSSG), and reduce glutathione (GSH) levels in vitro. Encapsulation of PL into polymeric micelles enhanced its inhibitory effect on neovascularization both in vitro and in vivo. Compared with free PL, PL micelles showed a stronger inhibitory effect on the proliferation, migration, invasion and tube formation of human umbilical vein endothelial cells (HUVECs). Additionally, in a transgenic zebrafish model, embryonic angiogenesis was inhibited by PL micelles. Furthermore, PL micelles were more effective in inhibiting tumor growth and prolonging survival in a subcutaneous CT-26 murine tumor model in vivo. Therefore, our data revealed that the encapsulation of PL into biodegradable polymeric micelles enhanced its anti-angiogenesis and anti-tumor activities both in vitro and in vivo.
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MESH Headings
- Angiogenesis Inhibitors/chemistry
- Angiogenesis Inhibitors/pharmacokinetics
- Angiogenesis Inhibitors/pharmacology
- Animals
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Delayed-Action Preparations/chemistry
- Delayed-Action Preparations/pharmacokinetics
- Delayed-Action Preparations/pharmacology
- Dioxolanes/chemistry
- Dioxolanes/pharmacokinetics
- Dioxolanes/pharmacology
- Human Umbilical Vein Endothelial Cells
- Humans
- Mice
- Mice, Inbred BALB C
- Micelles
- Nanoparticles/chemistry
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/genetics
- Neoplasms, Experimental/metabolism
- Neoplasms, Experimental/pathology
- Neovascularization, Pathologic/drug therapy
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/metabolism
- Neovascularization, Pathologic/pathology
- Zebrafish
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Affiliation(s)
- Yuanyuan Liu
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, PR China.
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24
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Ku SK, Kim JA, Bae JS. Piperlonguminine downregulates endothelial protein C receptor shedding in vitro and in vivo. Inflammation 2014; 37:435-42. [PMID: 24127121 DOI: 10.1007/s10753-013-9756-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Endothelial cell protein C receptor (EPCR) plays an important role in coagulation and inflammation. EPCR can be shed from the cell surface, and this is mediated by tumor necrosis factor-α-converting enzyme (TACE). Piperlonguminine (PL), an important component of Piper longum fruits, is known to exhibit antihyperlipidemic, antiplatelet, and antimelanogenesis activities. However, little is known about the effects of PL on EPCR shedding. Here, we investigated this issue by monitoring the effects of PL on phorbol-12-myristate 13-acetate (PMA) and on cecal ligation and puncture (CLP)-mediated EPCR shedding and underlying mechanisms. PL induced potent inhibition of PMA, and CLP induced EPCR shedding through suppression of TACE expression. And treatment with PL resulted in reduced PMA-stimulated phosphorylation of p38, extracellular regulated kinases (ERK) 1/2, and c-Jun N-terminal kinase (JNK). Given these results, PL might have potential as an anti-sEPCR shedding reagent against PMA- and CLP-mediated EPCR shedding.
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Affiliation(s)
- Sae-Kwang Ku
- Department of Anatomy and Histology, College of Oriental Medicine, Daegu Haany University, Gyeongsan, 712-715, Republic of Korea
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25
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Lee W, Yoo H, Ku SK, Kim JA, Bae JS. Anticoagulant activities of piperlonguminine in vitro and in vivo. BMB Rep 2013; 46:484-9. [PMID: 24148768 PMCID: PMC4133832 DOI: 10.5483/bmbrep.2013.46.10.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 02/23/2013] [Accepted: 03/04/2013] [Indexed: 12/27/2022] Open
Abstract
Piperlonguminine (PL), an important component of Piper longum fruits, is known to exhibit anti-hyperlipidemic, anti-platelet and anti-melanogenic activities. Here, the anticoagulant activities of PL were examined by monitoring activated-partial-thromboplastin-time (aPTT), prothrombin-time (PT), and the activities of thrombin and activated factor X (FXa). The effects of PL on the expressions of plasminogen activator inhibitor type 1 (PAI-1) and tissue-type plasminogen activator (t-PA) were also tested in tumor necrosis factor-α (TNF-α) activated HUVECs. The results showed that PL prolonged aPTT and PT significantly and inhibited the activities of thrombin and FXa. PL inhibited the generation of thrombin and FXa in HUVECs. In accordance with these anticoagulant activities, PL prolonged in vivo bleeding time and inhibited TNF-α induced PAI-1 production. Furthermore, PAI-1/t-PA ratio was significan- tly decreased by PL. Collectively, our results suggest that PL possesses antithrombotic activities and that the current study could provide bases for the development of new anticoagulant agents.
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Affiliation(s)
- Wonhwa Lee
- College of Pharmacy, CMRI, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Korea
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26
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Lee W, Yoo H, Kim JA, Lee S, Jee JG, Lee MY, Lee YM, Bae JS. Barrier protective effects of piperlonguminine in LPS-induced inflammation in vitro and in vivo. Food Chem Toxicol 2013; 58:149-57. [PMID: 23619565 DOI: 10.1016/j.fct.2013.04.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Revised: 03/27/2013] [Accepted: 04/12/2013] [Indexed: 01/04/2023]
Abstract
Piperlonguminine (PL), an important component of Piper longum fruits, is well known to possess potent anti-hyperlipidemic, anti-platelet and anti-melanogenesis activities. In this study, we first investigated the possible barrier protective effects of piperlonguminine against proinflammatory responses induced by lipopolysaccharide (LPS) and the associated signaling pathways in vitro and in vivo. The barrier protective activities of PL were determined by measuring permeability, monocytes adhesion and migration, and activation of proinflammatory proteins in LPS-activated human umbilical vein endothelial cells (HUVECs) and in mice. We found that PL inhibited LPS-induced barrier disruption, expression of cell adhesion molecules (CAMs) and adhesion/transendothelial migration of monocytes to human endothelial cells. PL also suppressed LPS-induced hyperpermeability and leukocytes migration in vivo. Further studies revealed that PL suppressed the production of tumor necrosis factor-α (TNF-α) or Interleukin (IL)-6 and activation of nuclear factor-κB (NF-κB) or extracellular regulated kinases (ERK) 1/2 by LPS. Moreover, treatment with PL resulted in reduced LPS-induced septic mortality. Collectively, these results suggest that PL protects vascular barrier integrity by inhibiting hyperpermeability, expression of CAMs, adhesion and migration of leukocytes, thereby endorsing its usefulness as a therapy for vascular inflammatory diseases.
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Affiliation(s)
- Wonhwa Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 702-701, Republic of Korea
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27
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Bezerra DP, Pessoa C, de Moraes MO, Saker-Neto N, Silveira ER, Costa-Lotufo LV. Overview of the therapeutic potential of piplartine (piperlongumine). Eur J Pharm Sci 2013; 48:453-63. [PMID: 23238172 DOI: 10.1016/j.ejps.2012.12.003] [Citation(s) in RCA: 209] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 11/24/2012] [Accepted: 12/03/2012] [Indexed: 11/27/2022]
Abstract
Piplartine (piperlongumine, 5,6-dihydro-1-[(2E)-1-oxo-3-(3,4,5-trimethoxyphenyl)-2-propenyl]-2(1H)-pyridinone) is a biologically active alkaloid/amide from peppers, as from long pepper (Piper longum L. - Piperaceae). Long pepper is one of the most widely used in Ayurvedic medicine, which is used to treat many diseases, including tumors. The purpose of the current paper is to address to the chemical structure establishment and to systematically survey the published articles and highlight recent advances in the knowledge of the therapeutic potential of piplartine, establishing new goals for future research. The reported pharmacological activities of piplartine include cytotoxic, genotoxic, antitumor, antiangiogenic, antimetastatic, antiplatelet aggregation, antinociceptive, anxiolytic, antidepressant, anti-atherosclerotic, antidiabetic, antibacterial, antifungal, leishmanicidal, trypanocidal, and schistosomicidal activities. Among the multiple pharmacological effects of piplartine, its anticancer property is the most promising. Therefore, the preclinical anticancer potential of piplartine has been extensively investigated, which recently resulted in one patent. This compound is selectively cytotoxic against cancer cells by induction of oxidative stress, induces genotoxicity, as an alternative strategy to killing tumor cells, has excellent oral bioavailability in mice, inhibits tumor growth in mice, and presents only weak systemic toxicity. In summary, we conclude that piplartine is effective for use in cancer therapy and its safety using chronic toxicological studies should be addressed to support the viability of clinical trials.
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Affiliation(s)
- Daniel P Bezerra
- Departamento de Fisiologia, Universidade Federal de Sergipe, Av. Marechal Rondon, Jardim Rosa Elze, 49100-000, São Cristóvão, Sergipe, Brazil.
| | - Claudia Pessoa
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Manoel O de Moraes
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Nicolau Saker-Neto
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Edilberto R Silveira
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Leticia V Costa-Lotufo
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
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28
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Han SS, Son DJ, Yun H, Kamberos NL, Janz S. Piperlongumine inhibits proliferation and survival of Burkitt lymphoma in vitro. Leuk Res 2013; 37:146-54. [PMID: 23237561 PMCID: PMC3551475 DOI: 10.1016/j.leukres.2012.11.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 11/08/2012] [Accepted: 11/14/2012] [Indexed: 01/08/2023]
Abstract
Piperlongumine (PL), a pepper plant alkaloid from Piper longum, kills solid tumor cells in a highly selective, potent fashion. To evaluate whether PL may have similar effects on malignant blood cells, we determined the efficacy with which PL inhibits the B-lymphocyte derived neoplasm, Burkitt lymphoma (BL). Low micromolar concentrations of PL (IC(50) = 2.8 μM × 8.5 μM) curbed growth and survival of two EBV(+) BL cell lines (Daudi, Raji) and two EBV BL cell lines (Ramos, DG-75), but left normal peripheral blood B-lymphocytes unharmed. PL-dependent cytotoxicity was effected in part by reduced NF-κB and MYC activity, with the former being caused by inhibition of IκBα degradation, nuclear translocation of p65, and binding of NF-κB dimers to cognate DNA sequences in gene promoters. In 4 of 4 BL cell lines, the NF-κB/MYC-regulated cellular target genes, E2F1 and MYB, were down regulated, while the stress sensor gene, GADD45B, was up regulated. The EBV-encoded oncogene, LMP-1, was suppressed in Daudi and Raji cells. Considering that NF-κB, MYC and LMP-1 play a crucial role in the biology of many blood cancers including BL, our results provide a strong preclinical rationale for considering PL in new intervention approaches for patients with hematologic malignancies.
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Affiliation(s)
- Seong-Su Han
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Dong-Ju Son
- Emory University, Department of Biomedical Engineering, Atlanta, GA, USA
| | - Hwakyung Yun
- Hanseo University, Department of Biological Sciences, Choognam, South Korea
| | - Natalie L. Kamberos
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Siegfried Janz
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
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29
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Ramasubba Rao V, Muthenna P, Shankaraiah G, Akileshwari C, Hari Babu K, Suresh G, Suresh Babu K, Chandra Kumar RS, Rajendra Prasad K, Ashok Yadav P, Petrash JM, Bhanuprakash Reddy G, Madhusudana Rao J. Synthesis and biological evaluation of new piplartine analogues as potent aldose reductase inhibitors (ARIs). Eur J Med Chem 2012; 57:344-61. [PMID: 23124161 PMCID: PMC3857970 DOI: 10.1016/j.ejmech.2012.09.014] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Revised: 08/18/2012] [Accepted: 09/08/2012] [Indexed: 11/26/2022]
Abstract
As a continuation of our efforts directed towards the development of anti-diabetic agents from natural sources, piplartine was isolated from Piper chaba, and was found to inhibit recombinant human ALR2 with an IC(50) of 160 μM. To improve the efficacy, a series of analogues have been synthesized by modification of the styryl/aromatic and heterocyclic ring functionalities of this natural product lead. All the derivatives were tested for their ALR2 inhibitory activity, and results indicated that adducts 3c, 3e and 2j prepared by the Michael addition of piplartine with indole derivatives displayed potent ARI activity, while the other compounds displayed varying degrees of inhibition. The active compounds were also capable of preventing sorbitol accumulation in human red blood cells.
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Affiliation(s)
- Vidadala Ramasubba Rao
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Puppala Muthenna
- Biochemistry Division, National Institute of Nutrition, Hyderabad 500 007, India
| | - Gundeti Shankaraiah
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | | | - Kothapalli Hari Babu
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Ganji Suresh
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Katragadda Suresh Babu
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Rotte Sateesh Chandra Kumar
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Kothakonda Rajendra Prasad
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - Potharaju Ashok Yadav
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
| | - J. Mark Petrash
- Department of Ophthalmology, University of Colorado, Aurora, CO, USA
| | | | - Janaswamy Madhusudana Rao
- Natural Products Laboratory, Division of Natural Product Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India
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30
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Son DJ, Kim SY, Han SS, Kim CW, Kumar S, Park BS, Lee SE, Yun YP, Jo H, Park YH. Piperlongumine inhibits atherosclerotic plaque formation and vascular smooth muscle cell proliferation by suppressing PDGF receptor signaling. Biochem Biophys Res Commun 2012; 427:349-54. [PMID: 22995306 PMCID: PMC3495231 DOI: 10.1016/j.bbrc.2012.09.061] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 09/08/2012] [Indexed: 12/13/2022]
Abstract
Piperlongumine (piplartine, PL) is an alkaloid found in the long pepper (Piper longum L.) and has well-documented anti-platelet aggregation, anti-inflammatory, and anti-cancer properties; however, the role of PL in prevention of atherosclerosis is unknown. We evaluated the anti-atherosclerotic potential of PL in an in vivo murine model of accelerated atherosclerosis and defined its mechanism of action in aortic vascular smooth muscle cells (VSMCs) in vitro. Local treatment with PL significantly reduced atherosclerotic plaque formation as well as proliferation and nuclear factor-kappa B (NF-κB) activation in an in vivo setting. PL treatment in VSMCs in vitro showed inhibition of migration and platelet-derived growth factor BB (PDGF-BB)-induced proliferation to the in vivo findings. We further identified that PL inhibited PDGF-BB-induced PDGF receptor beta activation and suppressed downstream signaling molecules such as phospholipase Cγ1, extracellular signal-regulated kinases 1 and 2 and Akt. Lastly, PL significantly attenuated activation of NF-κB-a downstream transcriptional regulator in PDGF receptor signaling, in response to PDGF-BB stimulation. In conclusion, our findings demonstrate a novel, therapeutic mechanism by which PL suppresses atherosclerosis plaque formation in vivo.
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MESH Headings
- Animals
- Apolipoproteins E/genetics
- Carotid Arteries
- Cell Proliferation/drug effects
- Dioxolanes/administration & dosage
- Disease Models, Animal
- Ligation
- Mice
- Mice, Knockout
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/pathology
- NF-kappa B/metabolism
- Phosphorylation/drug effects
- Plaque, Atherosclerotic/prevention & control
- Receptors, Platelet-Derived Growth Factor/agonists
- Receptors, Platelet-Derived Growth Factor/metabolism
- Signal Transduction
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Affiliation(s)
- Dong Ju Son
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA, USA
| | - Soo Yeon Kim
- Division of Life Science, Korea Basic Science Institute, Daejeon, South Korea
| | - Seong Su Han
- University of Iowa Carver College of Medicine, Department of Pathology, Iowa City, IA, USA
| | - Chan Woo Kim
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA, USA
- Department of Bioinspired Science, Ehwa Womans University, Seoul, South Korea
| | - Sandeep Kumar
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA, USA
| | | | - Sung Eun Lee
- Division of Applied Biology and Chemistry, Kyungpook National University, Daegu, Korea
| | - Yeo Pyo Yun
- College of Pharmacy, Chungbuk National University, Cheongju, South Korea
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA, USA
- Department of Bioinspired Science, Ehwa Womans University, Seoul, South Korea
| | - Young Hyun Park
- Department of Food Science and Nutrition, College of Natural Sciences, Soonchunhyung University, Asan, South Korea
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31
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Tomasini-Johansson BR, Johnson IA, Hoffmann FM, Mosher DF. Quantitative microtiter fibronectin fibrillogenesis assay: use in high throughput screening for identification of inhibitor compounds. Matrix Biol 2012; 31:360-7. [PMID: 22986508 DOI: 10.1016/j.matbio.2012.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 07/26/2012] [Accepted: 07/26/2012] [Indexed: 01/01/2023]
Abstract
Fibronectin (FN) is a plasma glycoprotein that circulates in the near micromolar concentration range and is deposited along with locally produced FN in the extracellular matrices of many tissues. The control of FN deposition is tightly controlled by cells. Agents that modulate FN assembly may be useful therapeutically in conditions characterized by excessive FN deposition, such as fibrosis, inflammatory diseases, and malignancies. To identify such agents by high throughput screening (HTS), we developed a microtiter assay of FN deposition by human fibroblasts. The assay provides a robust read-out of FN assembly. Alexa 488-FN (A488-FN) was added to cell monolayers, and the total fluorescence intensity of deposited A488-FN was quantified. The fluorescence intensity of deposited A488-FN correlated with the presence of FN fibrils visualized by fluorescence microscopy. The assay Z' values were 0.67 or 0.54, respectively, when using background values of fluorescence either with no added A488-FN or with A488-FN added together with a known inhibitor of FN deposition. The assay was used to screen libraries comprising 4160 known bioactive compounds. Nine compounds were identified as non- or low-cytotoxic inhibitors of FN assembly. Four (ML-9, HA-100, tyrphostin and imatinib mesylate) are kinase inhibitors, a category of compounds known to inhibit FN assembly; two (piperlongumine and cantharidin) are promoters of cancer cell apoptosis; and three (maprotiline, CGS12066B, and aposcopolamine) are modulators of biogenic amine signaling. The latter six compounds have not been recognized heretofore as affecting FN assembly. The assay is straight-forward, adapts to 96- and 384-well formats, and should be useful for routine measurement of FN deposition and HTS. Screening of more diverse chemical libraries and identification of specific and efficient modulators of FN fibrillogenesis may result in therapeutics to control excessive connective tissue deposition.
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Affiliation(s)
- Bianca R Tomasini-Johansson
- University of Wisconsin-Madison, Department of Biomolecular Chemistry and Medicine, Madison, WI 53706, United States.
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32
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Fontenele JB, Leal LKAM, Silveira ER, Felix FH, Felipe CFB, Viana GSB. Antiplatelet effects of piplartine, an alkamide isolated from Piper tuberculatum: possible involvement of cyclooxygenase blockade and antioxidant activity. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.04.0014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
Piplartine (piperlongumine; 5,6-dihydro-1-[1-oxo-3-(3,4,5-trimethoxyphenyl]-2(1H) pyridinone) is an alkaloid amide isolated from Piper species (Piperaceae). It has been reported to show multiple pharmacological activities in vitro and in vivo.
Methods
We evaluated the in-vitro antiplatelet effect of piplartine isolated from the roots of P. tuberculatum, on human platelet aggregation induced in platelet-rich plasma by the agonists collagen, adenosine 5′-diphosphate (ADP), arachidonic acid (AA) and thrombin.
Key findings
Piplartine (100μg/ml) caused a 30% inhibition in platelet aggregation when collagen was the agonist. At 200 μg/ml, piplartine significantly inhibited the aggregation induced by arachidonic acid (100%), collagen (59%) or ADP (52%) but not that induced by thrombin. The highest concentration of piplartine (300 μg/ml) inhibited thrombin- (37%), ADP- (71%) and collagen- (98%) induced aggregation. The inhibitory effect of piplartine on ADP-induced platelet aggregation was not modified by pretreatment with pentoxifylline (a phosphodiesterase inhibitor), l-arginine (a substrate for nitric oxide synthase) or ticlopidine (a P2Y12 purinoceptor antagonist). However, aspirin, a well-known inhibitor of cyclooxygenase, greatly increased the inhibitory effect of piplartine on arachidonic-acid-induced platelet aggregation.
Conclusions
The mechanism underlying the piplartine antiplatelet action is not totally clarified. It could be related to the inhibition of cyclooxgenase activity and a decrease in thromboxane A2 formation, similar to that occurring with aspirin. This and other possible mechanisms require further study.
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Affiliation(s)
- Juvenia B Fontenele
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, Brazil
| | - L Kalyne A M Leal
- Department of Pharmacy, Federal University of Ceará, Fortaleza, Brazil
| | | | - F Helder Felix
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, Brazil
| | | | - Glauce S B Viana
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, Brazil
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33
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Sun CM, K. Gurjar M, S. Yellol G, K. Mohapatra D. Simple and Efficient One Pot Synthetic Protocol to Construct Morpholin-2-ones. HETEROCYCLES 2010. [DOI: 10.3987/com-10-s(e)14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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