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Gandhi H, Mahant S, Sharma AK, Kumar D, Dua K, Chellappan DK, Singh SK, Gupta G, Aljabali AAA, Tambuwala MM, Kapoor DN. Exploring the therapeutic potential of naturally occurring piceatannol in non-communicable diseases. Biofactors 2024; 50:232-249. [PMID: 37702264 DOI: 10.1002/biof.2009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 08/28/2023] [Indexed: 09/14/2023]
Abstract
Piceatannol is a naturally occurring hydroxylated resveratrol analogue that can be found in a variety of fruits and vegetables. It has been documented to have a wide range of beneficial effects, including anti-inflammatory, antioxidant, anti-aging, anti-allergic, antidiabetic, neuroprotective, cardioprotective, and chemopreventive properties. Piceatannol has significantly higher antioxidant activity than resveratrol. Piceatannol has been shown in preclinical studies to have the ability to inhibit or reduce the growth of cancers in various organs such as the brain, breast, lung, colon, cervical, liver, prostate, and skin. However, the bioavailability of Piceatannol is comparatively lower than resveratrol and other stilbenes. Several approaches have been reported in recent years to enhance its bioavailability and biological activity, and clinical trials are required to validate these findings. This review focuses on several aspects of natural stilbene Piceatannol, its chemistry, and its mechanism of action, and its promising therapeutic potential for the prevention and treatment of a wide variety of complex human diseases.
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Affiliation(s)
- Himanshu Gandhi
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India
| | - Shikha Mahant
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India
| | - Abhishek Kumar Sharma
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India
| | - Deepak Kumar
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, New South Wales, Australia
| | | | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jaipur, India
- Center for Transdisciplinary Research, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Alaa A A Aljabali
- Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University, Irbid, Jordan
| | - Murtaza M Tambuwala
- Lincoln Medical School, University of Lincoln, Brayford Pool Campus, Lincoln LN6 7TS, England, UK
| | - Deepak N Kapoor
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India
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Yao L, Cai H, Fang Q, Liu D, Zhan M, Chen L, Du J. Piceatannol alleviates liver ischaemia/reperfusion injury by inhibiting TLR4/NF-κB/NLRP3 in hepatic macrophages. Eur J Pharmacol 2023; 960:176149. [PMID: 37866744 DOI: 10.1016/j.ejphar.2023.176149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/05/2023] [Accepted: 10/20/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND Macrophages present strong immunomodulatory ability and are considered to be core immune cells in the process of hepatic ischaemia‒reperfusion (I/R). The NLRP3 inflammasome is a kind of intracellular multimolecular complex that actively participates in innate immune responses and proinflammatory signalling pathways. Piceatannol (PIC) is a derivative of the natural phenolic compound resveratrol and has antioxidant and anti-inflammatory effects. The purpose of this study was to examine whether pretreatment with PIC can alleviate hepatic I/R injury by targeting NLRP3 inflammasome-induced macrophage pyroptosis. METHODS PIC-pretreated primary hepatic macrophages were subjected to hypoxia/reoxygenation, and liver ischaemia/reperfusion was performed in mice. RESULTS PIC pretreatment ameliorated histopathological changes, oxidative stress and inflammation while enhancing antioxidant and anti-inflammasome markers through downregulation of Toll-like receptor 4 (TLR4), p-IκBα (S32), p-NF-κBp65 (S536), NLRP3, caspase-1 (p20), IL-1β, IL-18 and GSDMD-N expression during liver ischaemia‒reperfusion. Moreover, PIC inhibited the translocation of NF-κB p65 after stimulation with hypoxia/reoxygenation in primary hepatic macrophages. CONCLUSIONS The results indicated that PIC protected the liver against hepatic I/R injury, which was mediated by targeting TLR4-NF-κB-NLRP3-mediated hepatic macrophage pyroptosis.
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Affiliation(s)
- Lei Yao
- Department of Biochemistry and Molecular Biology, Research Center for Infectious Diseases, School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China; Provincial Key Laboratory of Zoonoses of High Institutions in Anhui, Anhui Medical University, Hefei, 230032, China
| | - Haijian Cai
- Center for Scientific Research of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Qi Fang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Deng Liu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Mengting Zhan
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Lijian Chen
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China.
| | - Jian Du
- Department of Biochemistry and Molecular Biology, Research Center for Infectious Diseases, School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China; Provincial Key Laboratory of Zoonoses of High Institutions in Anhui, Anhui Medical University, Hefei, 230032, China.
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Al-Khayri JM, Mascarenhas R, Harish HM, Gowda Y, Lakshmaiah VV, Nagella P, Al-Mssallem MQ, Alessa FM, Almaghasla MI, Rezk AAS. Stilbenes, a Versatile Class of Natural Metabolites for Inflammation-An Overview. Molecules 2023; 28:molecules28093786. [PMID: 37175197 PMCID: PMC10180133 DOI: 10.3390/molecules28093786] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Stilbenes are polyphenolic allelochemicals synthesized by plants, especially grapes, peanuts, rhubarb, berries, etc., to defend themselves under stressful conditions. They are now exploited in medicine for their antioxidant, anti-proliferative and anti-inflammatory properties. Inflammation is the immune system's response to invading bacteria, toxic chemicals or even nutrient-deprived conditions. It is characterized by the release of cytokines which can wreak havoc on healthy tissues, worsening the disease condition. Stilbenes modulate NF-κB, MAPK and JAK/STAT pathways, and reduce the transcription of inflammatory factors which result in maintenance of homeostatic conditions. Resveratrol, the most studied stilbene, lowers the Michaelis constant of SIRT1, and occupies the substrate binding pocket. Gigantol interferes with the complement system. Besides these, oxyresveratrol, pterostilbene, polydatin, viniferins, etc., are front runners as drug candidates due to their diverse effects from different functional groups that affect bioavailability and molecular interactions. However, they each have different thresholds for toxicity to various cells of the human body, and thus a careful review of their properties must be conducted. In animal models of autoinflammatory diseases, the mode of application of stilbenes is important to their absorption and curative effects, as seen with topical and microemulsion gel methods. This review covers the diversity seen among stilbenes in the plant kingdom and their mechanism of action on the different inflammatory pathways. In detail, macrophages' contribution to inflamed conditions in the liver, the cardiac, connective and neural tissues, in the nephrons, intestine, lungs and in myriad other body cells is explored, along with detailed explanation on how stilbenes alleviate the symptoms specific to body site. A section on the bioavailability of stilbenes is included for understanding the limitations of the natural compounds as directly used drugs due to their rapid metabolism. Current delivery mechanisms include sulphonamides, or using specially designed synthetic drugs. It is hoped that further research may be fueled by this comprehensive work that makes a compelling argument for the exploitation of these compounds in medicine.
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Affiliation(s)
- Jameel M Al-Khayri
- Department of Agricultural Biotechnology, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Roseanne Mascarenhas
- Department of Life Sciences, CHRIST (Deemed to Be University), Bangalore 560029, India
| | | | - Yashwanth Gowda
- Department of Life Sciences, CHRIST (Deemed to Be University), Bangalore 560029, India
| | | | - Praveen Nagella
- Department of Life Sciences, CHRIST (Deemed to Be University), Bangalore 560029, India
| | - Muneera Qassim Al-Mssallem
- Department of Food Science and Nutrition, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Fatima Mohammed Alessa
- Department of Food Science and Nutrition, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Mustafa Ibrahim Almaghasla
- Department of Arid Land Agriculture, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Plant Pests, and Diseases Unit, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Adel Abdel-Sabour Rezk
- Department of Agricultural Biotechnology, College of Agriculture and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Virus and Phytoplasma, Plant Pathology Institute, Agricultural Research Center, Giza 12619, Egypt
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Relationship between Angiotensin II, Vascular Endothelial Growth Factor, and Arteriosclerosis Obliterans. DISEASE MARKERS 2023; 2023:1316821. [PMID: 36865500 PMCID: PMC9974256 DOI: 10.1155/2023/1316821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/11/2022] [Accepted: 11/24/2022] [Indexed: 02/25/2023]
Abstract
Objective To investigate the relationship between angiotensin II (Ang II), vascular endothelial growth factor (VEGF), and arteriosclerosis obliterans (ASO). Methods 60 ASO patients diagnosed and treated from October 2019 to December 2021 were selected for the observation group while 30 healthy physical examiners were for the control group. The general information (gender, age, history of smoking, diabetes, and hypertension) and arterial blood pressure (systolic and diastolic blood pressure) of the two groups were collected, and parameters like disease site and duration, Fontaine stage, and ankle-brachial index (ABI) of ASO patients have been evaluated. Ang II, VEGF, uric acid (UA), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglyceride (TG), and total cholesterol (TC) were also detected for the two groups. The variations in UA, LDL, HDL, TG, and TC among two groups along with levels of Ang II and VEGF in ASO patients in accordance to conditions like the general situation, disease duration, disease site, Fontaine stage, and ABI risk level have been studied to establish a correlation between Ang II and VEGF and ASO. Results (1) The proportion of males with a history of smoking, diabetes, and hypertension was higher (P < 0.05) among ASO patients in comparison to the control group. The diastolic blood pressure, LDL, TC, Ang II, and VEGF levels were found to be higher (P < 0.05) whereas HDL was low (P < 0.01). (2) The level of Ang II in male patients with ASO was significantly higher than that in female ASO patients (P < 0.05). In ASO patients, the levels of Ang II and VEGF increased not only with age (P < 0.01) but also with progression in Fontaine stages II, III, and IV (P < 0.01). (3) Logistic regression analysis revealed Ang II and VEGF as risk factors for ASO. (4) An AUC (area under the ROC (receiver operator characteristic) curve) for Ang II and VEGF for the diagnosis of ASO was 0.764 (good) and 0.854 (very good), respectively, while their combined AUC in diagnosing ASO was 0.901 (excellent). The AUC of Ang II and VEGF together in diagnosing ASO was greater than that of Ang II and VEGF alone along with higher specificity as well (all P < 0.05). Conclusion Ang II and VEGF were correlated with the occurrence and development of ASO. The AUC analysis demonstrates that Ang II and VEGF were highly discriminative of ASO.
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Yi YS, Kim HG, Kim JH, Yang WS, Kim E, Park JG, Aziz N, Parameswaran N, Cho JY. Syk promotes phagocytosis by inducing reactive oxygen species generation and suppressing SOCS1 in macrophage-mediated inflammatory responses. Int J Immunopathol Pharmacol 2022; 36:3946320221133018. [PMID: 36214175 PMCID: PMC9548688 DOI: 10.1177/03946320221133018] [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] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE Inflammation, a vital innate immune response against infection and injury, is mediated by macrophages. Spleen tyrosine kinase (Syk) regulates inflammatory responses in macrophages; however, its role and underlying mechanisms are uncertain. MATERIALS AND METHODS In this study, overexpression and knockout (KO) cell preparations, phagocytosis analysis, confocal microscopy, reactive oxygen species (ROS) determination, mRNA analysis, and immunoprecipitation/western blotting analyses were used to investigate the role of Syk in phagocytosis and its underlying mechanisms in macrophages during inflammatory responses. RESULTS Syk inhibition by Syk KO, Syk-specific small interfering RNA (siSyk), and a selective Syk inhibitor (piceatannol) significantly reduced the phagocytic activity of RAW264.7 cells. Syk inhibition also decreased cytochrome c generation by inhibiting ROS-generating enzymes in lipopolysaccharide (LPS)-stimulated RAW264.7 cells, and ROS scavenging suppressed the phagocytic activity of RAW264.7 cells. LPS induced the tyrosine nitration (N-Tyr) of suppressor of cytokine signaling 1 (SOCS1) through Syk-induced ROS generation in RAW264.7 cells. On the other hand, ROS scavenging suppressed the N-Tyr of SOCS1 and phagocytosis. Moreover, SOCS1 overexpression decreased phagocytic activity, and SOCS1 inhibition increased the phagocytic activity of RAW264.7 cells. CONCLUSION These results suggest that Syk plays a critical role in the phagocytic activity of macrophages by inducing ROS generation and suppressing SOCS1 through SOCS1 nitration during inflammatory responses.
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Affiliation(s)
- Young-Su Yi
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea,Department of Life Sciences, Kyonggi University, Suwon, Korea,Young-Su Yi, Department of Life Sciences, Kyonggi University,154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16227, Korea. Jae Youl Cho, Department of Integrative Biotechnology, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon Gyeonggi-do 16419, Korea.
| | - Han Gyung Kim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea
| | - Ji Hye Kim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea
| | - Woo Seok Yang
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea
| | - Eunji Kim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea
| | - Jae Gwang Park
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea
| | - Nur Aziz
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea
| | - Narayanan Parameswaran
- Department of Physiology and Division of Pathology, Michigan State University, East Lansing, MI, USA
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Korea,Young-Su Yi, Department of Life Sciences, Kyonggi University,154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16227, Korea. Jae Youl Cho, Department of Integrative Biotechnology, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon Gyeonggi-do 16419, Korea.
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Bachmaier K, Stuart A, Singh A, Mukhopadhyay A, Chakraborty S, Hong Z, Wang L, Tsukasaki Y, Maienschein-Cline M, Ganesh BB, Kanteti P, Rehman J, Malik AB. Albumin Nanoparticle Endocytosing Subset of Neutrophils for Precision Therapeutic Targeting of Inflammatory Tissue Injury. ACS NANO 2022; 16:4084-4101. [PMID: 35230826 PMCID: PMC8945372 DOI: 10.1021/acsnano.1c09762] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 02/23/2022] [Indexed: 05/30/2023]
Abstract
The complex involvement of neutrophils in inflammatory diseases makes them intriguing but challenging targets for therapeutic intervention. Here, we tested the hypothesis that varying endocytosis capacities would delineate functionally distinct neutrophil subpopulations that could be specifically targeted for therapeutic purposes. By using uniformly sized (∼120 nm in diameter) albumin nanoparticles (ANP) to characterize mouse neutrophils in vivo, we found two subsets of neutrophils, one that readily endocytosed ANP (ANPhigh neutrophils) and another that failed to endocytose ANP (ANPlow population). These ANPhigh and ANPlow subsets existed side by side simultaneously in bone marrow, peripheral blood, spleen, and lungs, both under basal conditions and after inflammatory challenge. Human peripheral blood neutrophils showed a similar duality. ANPhigh and ANPlow neutrophils had distinct cell surface marker expression and transcriptomic profiles, both in naive mice and in mice after endotoxemic challenge. ANPhigh and ANPlow neutrophils were functionally distinct in their capacities to kill bacteria and to produce inflammatory mediators. ANPhigh neutrophils produced inordinate amounts of reactive oxygen species and inflammatory chemokines and cytokines. Targeting this subset with ANP loaded with the drug piceatannol, a spleen tyrosine kinase (Syk) inhibitor, mitigated the effects of polymicrobial sepsis by reducing tissue inflammation while fully preserving neutrophilic host-defense function.
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Affiliation(s)
- Kurt Bachmaier
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
- Nano
Biotherapeutics, Inc., 2201 West Campbell Park Drive, Chicago, Illinois 60612, United States
| | - Andrew Stuart
- Nano
Biotherapeutics, Inc., 2201 West Campbell Park Drive, Chicago, Illinois 60612, United States
| | - Abhalaxmi Singh
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
- Nano
Biotherapeutics, Inc., 2201 West Campbell Park Drive, Chicago, Illinois 60612, United States
| | - Amitabha Mukhopadhyay
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
| | - Sreeparna Chakraborty
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
| | - Zhigang Hong
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
| | - Li Wang
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
- Division
of Cardiology, Department of Medicine, The
University of Illinois College of Medicine, Chicago, Illinois 60612, United States
| | - Yoshikazu Tsukasaki
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
| | - Mark Maienschein-Cline
- Research
Resources Center, University of Illinois
at Chicago, Chicago, Illinois 60612, United States
| | - Balaji B. Ganesh
- Research
Resources Center, University of Illinois
at Chicago, Chicago, Illinois 60612, United States
| | - Prasad Kanteti
- Nano
Biotherapeutics, Inc., 2201 West Campbell Park Drive, Chicago, Illinois 60612, United States
| | - Jalees Rehman
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
- Division
of Cardiology, Department of Medicine, The
University of Illinois College of Medicine, Chicago, Illinois 60612, United States
| | - Asrar B. Malik
- Department
of Pharmacology and Regenerative Medicine and the Center for Lung
and Vascular Biology, The University of
Illinois College of Medicine, E403, 835 South Wolcott Avenue, Chicago, Illinois 60612, United States
- Nano
Biotherapeutics, Inc., 2201 West Campbell Park Drive, Chicago, Illinois 60612, United States
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Li J, Chen YH, Li LZ, Wang F, Song W, Alolga RN, Zhou W, Yu H, Huang FQ, Yin X. Omics and Transgenic Analyses Reveal that Salvianolic Acid B Exhibits its Anti-Inflammatory Effects through Inhibiting the Mincle-Syk-Related Pathway in Macrophages. J Proteome Res 2021; 20:3734-3748. [PMID: 34080425 DOI: 10.1021/acs.jproteome.1c00325] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Salvianolic acid B (Sal B), the main water-soluble compound in Salvia miltiorrhiza, is known to exhibit anti-inflammatory activity, however, the underlying mechanism(s) is not completely uncovered. In this study, Sal B inhibited lipopolysaccharide (LPS)-induced M1 activation and promoted the transformation of macrophages from M1- to M2-type polarization. The altered lipid profiles of LPS-induced RAW 264.7 macrophages were partly restored by Sal B treatment. At the proteomic level, a total of 5612 proteins were identified and 432 were significantly changed in macrophages under LPS treatment. The differential proteins were classified into four clusters according to their expression level in blank, LPS, and Sal B groups. LPS-induced proteins in Cluster IV including Kif14, Mincle, and Sec62 were significantly recovered to almost normal levels by Sal B treatment. Use of knockdown Mincle or picetannol (inhibitor of Syk) led to significant reductions in the gene expressions of IL-1β, iNOS, and IL-12 and the release of NO. The converse was, however, observed for overexpressed Mincle. In addition, LPS- or trehalose-6,6-dibehenate-induced phosphorylation of Syk and PKCδ was decreased by Sal B treatment. These results suggest that Sal B inhibition of LPS-induced inflammation might be through inhibition of the Mincle-Syk-PKCδ signaling pathway.
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Affiliation(s)
- Jia Li
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
| | - Ya-Hui Chen
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
| | - Lan-Zhu Li
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China.,Beijing, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feizuo Wang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
| | - Wei Song
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
| | - Raphael N Alolga
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
| | - Wei Zhou
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
| | - Heming Yu
- Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu, China
| | - Feng-Qing Huang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
| | - Xiaojian Yin
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
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Prado Acosta M, Goyette-Desjardins G, Scheffel J, Dudeck A, Ruland J, Lepenies B. S-Layer From Lactobacillus brevis Modulates Antigen-Presenting Cell Functions via the Mincle-Syk-Card9 Axis. Front Immunol 2021; 12:602067. [PMID: 33732234 PMCID: PMC7957004 DOI: 10.3389/fimmu.2021.602067] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 02/08/2021] [Indexed: 12/17/2022] Open
Abstract
C-type lectin receptors (CLRs) are pattern recognition receptors that are crucial in the innate immune response. The gastrointestinal tract contributes significantly to the maintenance of immune homeostasis; it is the shelter for billions of microorganisms including many genera of Lactobacillus sp. Previously, it was shown that host-CLR interactions with gut microbiota play a crucial role in this context. The Macrophage-inducible C-type lectin (Mincle) is a Syk-coupled CLR that contributes to sensing of mucosa-associated commensals. In this study, we identified Mincle as a receptor for the Surface (S)-layer of the probiotic bacteria Lactobacillus brevis modulating GM-CSF bone marrow-derived cells (BMDCs) functions. We found that the S-layer/Mincle interaction led to a balanced cytokine response in BMDCs by triggering the release of both pro- and anti-inflammatory cytokines. In contrast, BMDCs derived from Mincle−/−, CARD9−/− or conditional Syk−/− mice failed to maintain this balance, thus leading to an increased production of the pro-inflammatory cytokines TNF and IL-6, whereas the levels of the anti-inflammatory cytokines IL-10 and TGF-β were markedly decreased. Importantly, this was accompanied by an altered CD4+ T cell priming capacity of Mincle−/− BMDCs resulting in an increased CD4+ T cell IFN-γ production upon stimulation with L. brevis S-layer. Our results contribute to the understanding of how commensal bacteria regulate antigen-presenting cell (APC) functions and highlight the importance of the Mincle/Syk/Card9 axis in APCs as a key factor in host-microbiota interactions.
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Affiliation(s)
- Mariano Prado Acosta
- Research Center for Emerging Infections and Zoonoses, Institute for Immunology, University of Veterinary Medicine, Hannover, Germany
| | - Guillaume Goyette-Desjardins
- Research Center for Emerging Infections and Zoonoses, Institute for Immunology, University of Veterinary Medicine, Hannover, Germany
| | - Jörg Scheffel
- Dermatological Allergology, Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Anne Dudeck
- Medical Faculty, Institute for Molecular and Clinical Immunology, Otto-von-Guericke Universität Magdeburg, Magdeburg, Germany
| | - Jürgen Ruland
- School of Medicine, Institute of Clinical Chemistry and Pathobiochemistry, Technical University of Munich, Munich, Germany.,German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany.,German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Bernd Lepenies
- Research Center for Emerging Infections and Zoonoses, Institute for Immunology, University of Veterinary Medicine, Hannover, Germany
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9
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El Ansari YS, Kanagaratham C, Lewis OL, Oettgen HC. IgE and mast cells: The endogenous adjuvant. Adv Immunol 2020; 148:93-153. [PMID: 33190734 DOI: 10.1016/bs.ai.2020.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mast cells and IgE are most familiar as the effectors of type I hypersensitivity reactions including anaphylaxis. It is becoming clear however that this pair has important immunomodulatory effects on innate and adaptive cells of the immune system. In this purview, they act as endogenous adjuvants to ignite evolving immune responses, promote the transition of allergic disease into chronic illness and disrupt the development of active mechanisms of tolerance to ingested foods. Suppression of IgE-mediated mast cell activation can be exerted by molecules targeting IgE, FcɛRI or signaling kinases including Syk, or by IgG antibodies acting via inhibitory Fcγ receptors. In 2015 we reviewed the evidence for the adjuvant functions of mast cells. This update includes the original text, incorporates some important developments in the field over the past five years and discusses how interventions targeting these pathways might have promise in the development of strategies to treat allergic disease.
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Affiliation(s)
- Yasmeen S El Ansari
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States; Institute of Laboratory Medicine, Philipps University Marburg, Marburg, Germany
| | - Cynthia Kanagaratham
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States; Department of Pediatrics, Harvard Medical School, Boston, MA, United States
| | - Owen L Lewis
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States
| | - Hans C Oettgen
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States; Department of Pediatrics, Harvard Medical School, Boston, MA, United States.
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Sanglard LP, Mote BE, Willson P, Harding JCS, Plastow GS, Dekkers JCM, Serão NVL. Genomic Analysis of IgG Antibody Response to Common Pathogens in Commercial Sows in Health-Challenged Herds. Front Genet 2020; 11:593804. [PMID: 33193739 PMCID: PMC7646516 DOI: 10.3389/fgene.2020.593804] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/25/2020] [Indexed: 11/13/2022] Open
Abstract
Losses due to infectious diseases are one of the main factors affecting productivity in the swine industry, motivating the investigation of disease resilience-related traits for genetic selection. However, these traits are not expected to be expressed in the nucleus herds, where selection is performed. One alternative is to use information from the commercial level to identify and select nucleus animals genetically superior for coping with pathogen challenges. In this study, we analyzed the genetic basis of antibody (Ab) response to common infectious pathogens in health-challenged commercial swine herds as potential indicator traits for disease resilience, including Ab response to influenza A virus of swine (IAV), Mycoplasma hyopneumoniae (MH), porcine circovirus (PCV2), and Actinobacillus pleuropneumoniae (APP; different serotypes). Ab response was measured in blood at entry into gilt rearing, post-acclimation (∼40 days after entering the commercial herd), and parities 1 and 2. Heritability estimates for Ab response to IAV, MH, and PCV2 ranged from 0 to 0.76. Ab response to APP ranged from 0 to 0.40. The genetic correlation (r G ) of Ab response to IAV with MH, PCV2, PRRSV, and APPmean (average Ab responses for all serotypes of APP) were positive (>0.29) at entry. APPmean was negatively correlated with PCV2 and MH at entry and parity 2 but positively correlated with MH at post-acclimation and parity 1. Genomic regions associated with Ab response to different APP serotypes were identified on 13 chromosomes. The region on chromosome 14 (2 Mb) was associated with several serotypes of APP, explaining up to 4.3% of the genetic variance of Ab to APP7 at entry. In general, genomic prediction accuracies for Ab response were low to moderate, except average Ab response to all infectious pathogens evaluated. These results suggest that genetic selection of Ab response in commercial sows is possible, but with variable success depending on the trait and the time-point of collection. Future work is needed to determine genetic correlations of Ab response with disease resilience, reproductive performance, and other production traits.
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Affiliation(s)
- Leticia P Sanglard
- Department of Animal Science, Iowa State University, Ames, IA, United States
| | | | - Benny E Mote
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Philip Willson
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, SK, Canada
| | - John C S Harding
- Department of Large Animal Clinical Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - Graham S Plastow
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
| | - Jack C M Dekkers
- Department of Animal Science, Iowa State University, Ames, IA, United States
| | - Nick V L Serão
- Department of Animal Science, Iowa State University, Ames, IA, United States
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Banik K, Ranaware AM, Harsha C, Nitesh T, Girisa S, Deshpande V, Fan L, Nalawade SP, Sethi G, Kunnumakkara AB. Piceatannol: A natural stilbene for the prevention and treatment of cancer. Pharmacol Res 2020; 153:104635. [DOI: 10.1016/j.phrs.2020.104635] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/19/2019] [Accepted: 01/06/2020] [Indexed: 12/13/2022]
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12
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Shrestha A, Pandey RP, Pokhrel AR, Dhakal D, Chu LL, Sohng JK. Modular pathway engineering for resveratrol and piceatannol production in engineered Escherichia coli. Appl Microbiol Biotechnol 2018; 102:9691-9706. [PMID: 30178203 DOI: 10.1007/s00253-018-9323-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/04/2018] [Accepted: 08/08/2018] [Indexed: 12/20/2022]
Abstract
Resveratrol and its ortho-hydroxylated derivative piceatannol were biosynthesized by modular pathway engineering in Escherichia coli. The biosynthetic pathway was divided into three different modules. Module I includes polyketide biosynthetic genes; module II genes include acetyl-CoA and malonyl-CoA pool-enhancing genes from three different organisms; and module III genes are regiospecific 3'-hydroxylating enzymes. E. coli BL21(DE3) with module I produced 8.6 mg/L of resveratrol from exogenously fed 1 mM p-coumaric acid after 72 h. Combination of module I and acetyl-CoA supplementing module IIb genes from N. farcinica IFM10152 produced 2.5-fold higher (60 mg/L) titer of resveratrol than the module IIa genes from E. coli. The exogenous supplementation of sodium acetate further enhanced production to 64 mg/L. Furthermore, module I with module IIc harboring matBC from S. coelicolor A3(2) produced 73 mg/L of resveratrol, which was elevated to 151 mg/L upon supplementing disodium malonate exogenously. This increment is 17.5-fold higher than module I harboring E. coli BL21(DE3). The combination of module I and two different module II genes yielded 137 mg/L resveratrol when supplemented with both sodium acetate and disodium malonate. The high resveratrol-producing combination module was further modified with incorporation of hpaBC for the ortho-hydroxylation of resveratrol to produce piceatannol. The engineered strain harboring modules I, IIc and III produced 124 mg/L of piceatannol, the highest titer after 72 h in disodium malonate-supplemented strain, which is 2-fold higher than in non-supplemented strain. The remaining resveratrol was about 30 mg/L. Furthermore, caffeic acid (85.5 mg/L) was also produced in the same strain. Resveratrol and piceatannol were biosynthesized along with caffeic acid by three different modules overexpressing acetate and malonate assimilation pathway genes from three different sources. The production titer of both resveratrol and piceatannol could be achieved higher upon blocking acetyl-CoA and malonyl-CoA utilizing pathway genes in host strain.
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Affiliation(s)
- Anil Shrestha
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea
| | - Ramesh Prasad Pandey
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea.,Department of BT-Convergent Pharmaceutical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea
| | - Anaya Raj Pokhrel
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea
| | - Dipesh Dhakal
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea
| | - Luong Luan Chu
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea
| | - Jae Kyung Sohng
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea. .,Department of BT-Convergent Pharmaceutical Engineering, Sun Moon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam, 31460, Republic of Korea.
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Nayak AP, Deshpande DA, Penn RB. New targets for resolution of airway remodeling in obstructive lung diseases. F1000Res 2018; 7. [PMID: 29904584 PMCID: PMC5981194 DOI: 10.12688/f1000research.14581.1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/23/2018] [Indexed: 12/17/2022] Open
Abstract
Airway remodeling (AR) is a progressive pathological feature of the obstructive lung diseases, including asthma and chronic obstructive pulmonary disease (COPD). The pathology manifests itself in the form of significant, progressive, and (to date) seemingly irreversible changes to distinct respiratory structural compartments. Consequently, AR correlates with disease severity and the gradual decline in pulmonary function associated with asthma and COPD. Although current asthma/COPD drugs manage airway contraction and inflammation, none of these effectively prevent or reverse features of AR. In this review, we provide a brief overview of the features and putative mechanisms affecting AR. We further discuss recently proposed strategies with promise for deterring or treating AR.
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Affiliation(s)
- Ajay P Nayak
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, USA
| | - Deepak A Deshpande
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, USA
| | - Raymond B Penn
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, USA
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Heo KT, Kang SY, Jang JH, Hong YS. Sam5, a Coumarate 3-Hydroxylase fromSaccharothrix espanaensis: New Insight into the Piceatannol Production as a Resveratrol 3’-Hydroxylase. ChemistrySelect 2017. [DOI: 10.1002/slct.201701969] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kyung Taek Heo
- Chemical Biology Research Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); 30 Yeongudanji-ro, Ochang-eup Chungbuk 28116 Korea
- Department of Biomolecular Science, KRIBB School of Bioscience; Korea University of Science and Technology (UST); Daejeon 34141 Korea
| | - Sun-Young Kang
- Chemical Biology Research Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); 30 Yeongudanji-ro, Ochang-eup Chungbuk 28116 Korea
| | - Jae-Hyuk Jang
- Chemical Biology Research Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); 30 Yeongudanji-ro, Ochang-eup Chungbuk 28116 Korea
- Department of Biomolecular Science, KRIBB School of Bioscience; Korea University of Science and Technology (UST); Daejeon 34141 Korea
| | - Young-Soo Hong
- Chemical Biology Research Center; Korea Research Institute of Bioscience and Biotechnology (KRIBB); 30 Yeongudanji-ro, Ochang-eup Chungbuk 28116 Korea
- Department of Biomolecular Science, KRIBB School of Bioscience; Korea University of Science and Technology (UST); Daejeon 34141 Korea
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Matsuda H, Nakamura S, Yoshikawa M. Degranulation Inhibitors from Medicinal Plants in Antigen-Stimulated Rat Basophilic Leukemia (RBL-2H3) Cells. Chem Pharm Bull (Tokyo) 2016; 64:96-103. [PMID: 26833437 DOI: 10.1248/cpb.c15-00781] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mast cells and basophils play important roles in both immediate- and late-phase reactions of type 1 allergy. Histamine, which is released from mast cells and basophils stimulated by an antigen or degranulation inducers, is usually determined as a degranulation marker in experiments on immediate allergic reactions in vitro. β-Hexosaminidase is also stored in secretory granules of the cells and is released concomitantly with histamine when the cells are immunologically activated, and recently this enzyme activity in the medium has been used as a marker of the degranulation. In this paper, we review our studies on the search for degranulation inhibitors, such as flavonoids, stilbenes, and curcuminoids, from medicinal plants using rat basophilic leukemia (RBL-2H3) cells.
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Seyed MA, Jantan I, Bukhari SNA, Vijayaraghavan K. A Comprehensive Review on the Chemotherapeutic Potential of Piceatannol for Cancer Treatment, with Mechanistic Insights. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:725-37. [PMID: 26758628 DOI: 10.1021/acs.jafc.5b05993] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Cancer is a diverse class of diseases characterized by uncontrolled cell growth that constitutes the greatest cause of mortality and morbidity worldwide. Despite steady progress, the treatment modalities of cancer are still insufficient. Several new concepts have emerged for therapeutic intervention in malignant diseases with the goal of identifying specific targets and overcoming resistance against current cytotoxic therapies. Many studies have reported the remarkable and significant properties of dietary plant polyphenols such as curcumin, resveratrol, flavopiridol, indirubin, magnolol, piceatannol, parthenolide, epigallocatechin gallate, and cucurbitacin as anticancer agents known for their pleiotropic effects on cancer, immune cells, and inflammation. Piceatannol, an analogue and metabolite of resveratrol, is a natural stilbene commonly found in grape skins and wine. Compared to resveratrol, this molecule exhibits superior bioactivities as an inhibitor of COX-1/2 and the CSN-associated kinase. Piceatannol is thought to be a potent natural compound with many therapeutic effects, such as the prevention of hypercholesterolemia, arrhythmia, atherosclerosis, angiogenesis, and cardiovascular diseases. It also demonstrates vasorelaxation, antioxidant, and anticancer activities. This comprehensive review summarizes the current data regarding the mechanisms of action of piceatannol, its chemopreventive properties, and its possible therapeutic potential against various types of human cancer.
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Affiliation(s)
- Mohamed Ali Seyed
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia (UKM), The National University of Malaysia , Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
- School of Life Sciences, B. S. Abdur Rahman University , Seethakathi Estate, Vandalur, 600048 Chennai, India
- Faculty of Medicine, University of Tabuk , Tabuk 71491, Saudi Arabia
| | - Ibrahim Jantan
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia (UKM), The National University of Malaysia , Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Syed Nasir Abbas Bukhari
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia (UKM), The National University of Malaysia , Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia
| | - Kavitha Vijayaraghavan
- School of Life Sciences, B. S. Abdur Rahman University , Seethakathi Estate, Vandalur, 600048 Chennai, India
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Kim DH, Lee YG, Park HJ, Lee JA, Kim HJ, Hwang JK, Choi JM. Piceatannol inhibits effector T cell functions by suppressing TcR signaling. Int Immunopharmacol 2015; 25:285-92. [DOI: 10.1016/j.intimp.2015.01.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 12/30/2014] [Accepted: 01/30/2015] [Indexed: 12/31/2022]
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Abstract
For decades, Praziquantel (PZQ) is the drug of choice against one of the most afflicting helminthic diseases worldwide, schistosomiasis. With respect to the fear of upcoming PZQ resistance, efforts are needed to find new chemotherapeutic options. Protein kinases (PKs) are essential molecules in signaling processes and indispensable to life. Aberrant PK functions take distinctive roles in human diseases and represent targets in chemotherapies. In schistosomes, conserved PKs were found to possess similar pivotal roles contributing not only to reproduction processes, but also to the pathology of schistosomiasis, which is closely associated to egg production. Exploiting the similarity of PKs of humans and schistosomes, PK inhibitors designed to treat human diseases may serve as lead compounds for new drugs against schistosomiasis.
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20
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Abstract
INTRODUCTION The Fc receptors (FcRs) and their interactions with immunoglobulin and innate immune opsonins, such as C-reactive protein, are key players in humoral and cellular immune responses. As the effector mechanism for some therapeutic monoclonal antibodies, and often a contributor to the pathogenesis and progression of autoimmunity, FcRs are promising targets for treating autoimmune diseases. AREAS COVERED This review discusses the nature of different FcRs and the various mechanisms of their involvement in initiating and modulating immunocyte functions and their biological consequences. It describes a range of current strategies in targeting FcRs and manipulating their interaction with specific ligands, while presenting the pros and cons of these approaches. This review also discusses potential new strategies including regulation of FcR expression and receptor crosstalk. EXPERT OPINION FcRs are appealing targets in the treatment of inflammatory autoimmune diseases. However, there are still knowledge limitations and technical challenges, the most important being a better understanding of the individual roles of each of the FcRs and enhancement of the specificity in targeting particular cell types and specific FcRs.
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Affiliation(s)
- Xinrui Li
- The University of Alabama , SHEL 272, 1825 University Blvd, Birmingham, AL 35294 , USA
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21
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Geahlen RL. Getting Syk: spleen tyrosine kinase as a therapeutic target. Trends Pharmacol Sci 2014; 35:414-22. [PMID: 24975478 DOI: 10.1016/j.tips.2014.05.007] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/27/2014] [Accepted: 05/30/2014] [Indexed: 02/06/2023]
Abstract
Spleen tyrosine kinase (Syk) is a cytoplasmic protein tyrosine kinase well known for its ability to couple immune cell receptors to intracellular signaling pathways that regulate cellular responses to extracellular antigens and antigen-immunoglobulin (Ig) complexes of particular importance to the initiation of inflammatory responses. Thus, Syk is an attractive target for therapeutic kinase inhibitors designed to ameliorate the symptoms and consequences of acute and chronic inflammation. Its more recently recognized role as a promoter of cell survival in numerous cancer cell types ranging from leukemia to retinoblastoma has attracted considerable interest as a target for a new generation of anticancer drugs. This review discusses the biological processes in which Syk participates that have made this kinase such a compelling drug target.
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Affiliation(s)
- Robert L Geahlen
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, Hansen Life Sciences Research Building, 210 South University Street, West Lafayette, IN 47907, USA.
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Lee YS, Hur S, Kim TY. Homoisoflavanone prevents mast cell activation and allergic responses by inhibition of Syk signaling pathway. Allergy 2014; 69:453-62. [PMID: 24446972 DOI: 10.1111/all.12356] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Mast cells play important roles in allergic inflammatory responses because they produce leukotrienes (LTs), prostaglandins (PGs), and a variety of inflammatory cytokines. Thus, pharmacological interventions for allergies have focused on inhibiting mast cell activation. Homoisoflavanone (HIF), isolated from Cremastra appendiculata Makino, has anti-angiogenic activities; however, its effects on allergic reactions have not been determined. The aim of this study was to assess the inhibitory effects of HIF on mast cell activation, which is critical for anti-allergic reaction and the underlying mechanisms. METHODS Enzyme-linked immunosorbent assays, quantitative real-time PCR, western blot analyses, and degranulation assay were performed to measure pro-inflammatory and allergic mediators in PMA/A23187- or IgE/antigen-stimulated mouse bone marrow-derived mast cells (BMMCs), HMC-1, RBL-1, or human PBMC-derived mast cells treated with or without HIF. The anti-allergic effects of HIF were determined in mouse models using dinitrophenol-immunoglobulin E-induced passive cutaneous anaphylaxis (PCA) and compound 48/80-induced ear swelling. RESULTS Homoisoflavanone down-regulated PGD2 , LTB4 , and LTC4 production and inhibited the production of pro-inflammatory cytokines, such as interleukin-6 and tumor necrosis factor-α in PMA/A23187- or IgE/antigen-stimulated mast cells. The molecular mechanisms by which HIF caused these inhibitory effects were determined to be the inactivation of spleen tyrosine kinase (Syk) signaling and the concurrent suppression of cPLA2 . HIF inhibited IgE-mediated PCA and compound 48/80-induced ear swelling in mouse. CONCLUSIONS Homoisoflavanone inhibited mast cell activation through the suppression of Syk pathway together with the inhibition of cPLA2 . Thus, it might be a good candidate molecule for allergic diseases.
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Affiliation(s)
- Y. S. Lee
- Department of Dermatology; College of Medicine; The Catholic University of Korea; Seoul South Korea
| | - S. Hur
- Department of Dermatology; College of Medicine; The Catholic University of Korea; Seoul South Korea
| | - T.-Y. Kim
- Department of Dermatology; College of Medicine; The Catholic University of Korea; Seoul South Korea
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Moy LY, Jia Y, Caniga M, Lieber G, Gil M, Fernandez X, Sirkowski E, Miller R, Alexander JP, Lee HH, Shin JD, Ellis JM, Chen H, Wilhelm A, Yu H, Vincent S, Chapman RW, Kelly N, Hickey E, Abraham WM, Northrup A, Miller T, Houshyar H, Crackower MA. Inhibition of spleen tyrosine kinase attenuates allergen-mediated airway constriction. Am J Respir Cell Mol Biol 2014; 49:1085-92. [PMID: 23889698 DOI: 10.1165/rcmb.2013-0200oc] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Spleen tyrosine kinase (SYK) is a key activator of signaling pathways downstream of multiple surface receptors implicated in asthma. SYK function has been extensively studied in mast cells downstream of the high-affinity IgE receptor, FcεR1. Preclinical studies have demonstrated a role for SYK in models of allergic inflammation, but a role in airway constriction has not been demonstrated. Here, we have used a potent and selective pharmacological inhibitor of SYK to determine the role of SYK in allergen-mediated inflammation and airway constriction in preclinical models. Attenuation of allergic airway responses was evaluated in a rat passive anaphylaxis model and rat and sheep inhaled allergen challenge models, as well as an ex vivo model of allergen-mediated airway constriction in rats and cynomolgus monkeys. Pharmacological inhibition of SYK dose-dependently blocked IgE-mediated tracheal plasma extravasation in rats. In a rat ovalbumin-sensitized airway challenge model, oral dosing with an SYK inhibitor led to a dose-dependent reduction in lung inflammatory cells. Ex vivo analysis of allergen-induced airway constriction in ovalbumin-sensitized brown Norway rats showed a complete attenuation with treatment of a SYK inhibitor, as well as a complete block of allergen-induced serotonin release. Similarly, allergen-mediated airway constriction was attenuated in ex vivo studies from nonhuman primate lungs. Intravenous administration of an SYK inhibitor attenuated both early- and late-phase allergen-induced increases in airway resistance in an Ascaris-sensitive sheep allergen challenge model. These data support a key role for SYK signaling in mediating allergic airway responses.
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Ko YJ, Kim HH, Kim EJ, Katakura Y, Lee WS, Kim GS, Ryu CH. Piceatannol inhibits mast cell-mediated allergic inflammation. Int J Mol Med 2013; 31:951-8. [PMID: 23426871 DOI: 10.3892/ijmm.2013.1283] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 01/15/2013] [Indexed: 11/05/2022] Open
Abstract
Piceatannol is a phenolic stilbenoid and a metabolite of resveratrol which is found in red wine. Piceatannol (PIC) commonly exhibits anti-inflammatory, antiplatelet and antiproliferative activity. In the present study, the anti-allergic and anti-inflammatory mechanisms of PIC were investigated by examining the effects of PIC on pro‑inflammatory cytokine release and phosphorylation of mitogen-activated protein (MAP) kinases (ERK, JNK and p38) in a human mast cell line. PIC dose-dependently inhibited compound 48/80-induced systemic anaphylaxis and immunoglobulin E-mediated local allergic reactions. PIC reduced the immunoglobulin E (IgE)-mediated local allergic reaction and attenuated histamine release from rat peritoneal mast cells. Histamine and β-hexosaminidase release was markedly decreased dose-dependently by PIC treatment in RBL-2H3 cells. PIC treatments of HMC-1 cells definitely reduced mRNA expression and the release of the pro‑inflammatory cytokines, tumor necrosis factor-α and interleukin-8. MAP kinase phosphorylation was also strongly decreased dose-dependently following PIC treatment. PIC regulated the production of cytokines and histamine in phorbol 12-myristate 13-acetate plus A23187-stimulated mast cells. Thus, PIC may alleviate allergic inflammation and may be a useful therapeutic agent for allergic diseases.
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Affiliation(s)
- Yu-Jin Ko
- Division of Applied Life Sciences (BK 21 Program), Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
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Siddiqui S, Redhu NS, Ojo OO, Liu B, Irechukwu N, Billington C, Janssen L, Moir LM. Emerging airway smooth muscle targets to treat asthma. Pulm Pharmacol Ther 2012; 26:132-44. [PMID: 22981423 DOI: 10.1016/j.pupt.2012.08.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 07/28/2012] [Accepted: 08/27/2012] [Indexed: 11/26/2022]
Abstract
Asthma is characterized in part by variable airflow obstruction and non-specific hyperresponsiveness to a variety of bronchoconstrictors, both of which are mediated by the airway smooth muscle (ASM). The ASM is also involved in the airway inflammation and airway wall remodeling observed in asthma. For all these reasons, the ASM provides an important target for the treatment of asthma. Several classes of drugs were developed decades ago which targeted the ASM - including β-agonists, anti-cholinergics, anti-histamines and anti-leukotrienes - but no substantially new class of drug has appeared recently. In this review, we summarize the on-going work of several laboratories aimed at producing novel targets and/or tools for the treatment of asthma. These range from receptors and ion channels on the ASM plasmalemma, to intracellular effectors (particularly those related to cyclic nucleotide signaling, calcium-homeostasis and phosphorylation cascades), to anti-IgE therapy and outright destruction of the ASM itself.
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Affiliation(s)
- Sana Siddiqui
- Meakins-Christie Laboratories, Department of Medicine, McGill University, 3626 St Urbain, Montréal, Québec H2X 2P2, Canada
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The potential use of tyrosine kinase inhibitors in severe asthma. Curr Opin Allergy Clin Immunol 2012; 12:68-75. [PMID: 22157153 DOI: 10.1097/aci.0b013e32834ecb4f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PURPOSE OF REVIEW Severe asthma comprises heterogeneous phenotypes that share in common a poor response to traditional therapies. Recent and ongoing work with tyrosine kinase inhibitors suggests a potential beneficial role in treatment of severe asthma. RECENT FINDINGS Various receptor and nonreceptor tyrosine kinase pathways contribute to aspects of airway inflammation, airway hyperresponsiveness, and remodeling of asthma. Selective and nonselective tyrosine kinase inhibitors may be useful to block pathways that are pathologically overactive or overexpressed in severe asthma. Recent in-vivo studies have demonstrated the utility of inhibitors against specific tyrosine kinases (epidermal growth factor receptor, c-kit/platelet derived growth factor receptor, vascular endothelial growth factor receptor, spleen tyrosine kinase, and janus kinase) in altering key aspects of severe asthma. SUMMARY Asthma and even severe asthma does not consist of a single phenotype. Targeting key inflammatory and remodeling pathways engaged across subphenotypes with tyrosine kinase inhibitors appears to hold promise.
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Piotrowska H, Kucinska M, Murias M. Biological activity of piceatannol: Leaving the shadow of resveratrol. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2012; 750:60-82. [DOI: 10.1016/j.mrrev.2011.11.001] [Citation(s) in RCA: 275] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 10/26/2011] [Accepted: 11/03/2011] [Indexed: 01/27/2023]
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Theoharides TC, Alysandratos KD, Angelidou A, Delivanis DA, Sismanopoulos N, Zhang B, Asadi S, Vasiadi M, Weng Z, Miniati A, Kalogeromitros D. Mast cells and inflammation. BIOCHIMICA ET BIOPHYSICA ACTA 2012; 1822:21-33. [PMID: 21185371 PMCID: PMC3318920 DOI: 10.1016/j.bbadis.2010.12.014] [Citation(s) in RCA: 536] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 12/05/2010] [Accepted: 12/16/2010] [Indexed: 12/28/2022]
Abstract
Mast cells are well known for their role in allergic and anaphylactic reactions, as well as their involvement in acquired and innate immunity. Increasing evidence now implicates mast cells in inflammatory diseases where they are activated by non-allergic triggers, such as neuropeptides and cytokines, often exerting synergistic effects as in the case of IL-33 and neurotensin. Mast cells can also release pro-inflammatory mediators selectively without degranulation. In particular, IL-1 induces selective release of IL-6, while corticotropin-releasing hormone secreted under stress induces the release of vascular endothelial growth factor. Many inflammatory diseases involve mast cells in cross-talk with T cells, such as atopic dermatitis, psoriasis and multiple sclerosis, which all worsen by stress. How mast cell differential responses are regulated is still unresolved. Preliminary evidence suggests that mitochondrial function and dynamics control mast cell degranulation, but not selective release. Recent findings also indicate that mast cells have immunomodulatory properties. Understanding selective release of mediators could explain how mast cells participate in numerous diverse biologic processes, and how they exert both immunostimulatory and immunosuppressive actions. Unraveling selective mast cell secretion could also help develop unique mast cell inhibitors with novel therapeutic applications. This article is part of a Special Issue entitled: Mast cells in inflammation.
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Affiliation(s)
- Theoharis C Theoharides
- Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Molecular Physiology and Pharmacology, Tufts University School of Medicine, Boston, MA 02111, USA.
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Bertagnolo V, Brugnoli F, Grassilli S, Nika E, Capitani S. Vav1 in differentiation of tumoral promyelocytes. Cell Signal 2011; 24:612-20. [PMID: 22133616 DOI: 10.1016/j.cellsig.2011.11.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 11/08/2011] [Indexed: 02/06/2023]
Abstract
The multidomain protein Vav1, in addition to promote the acquisition of maturation related properties by normal hematopoietic cells, is a key player in the ATRA- and PMA-induced completion of the differentiation program of tumoral myeloid precursors derived from APL. This review is focussed on the role of Vav1 in differentiating promyelocytes, as part of interconnected networks of functionally related proteins ended to regulate different aspects of myeloid maturation. The role of Vav1 in determining actin cytoskeleton reorganization alternative to the best known function as a GEF for small G proteins is discussed, as well as the binding of Vav1 with cytoplasmic and nuclear signaling molecules which provides a new perspective in the modulation of nuclear architecture and activity. In particular, new hints are provided on the ability of Vav1 to determine the nuclear amount of proteins implicated in modulating mRNA production and stability and in regulating the ATRA-dependent protein expression also by direct interaction with transcription factors known to drive the ATRA-induced maturation of myeloid cells. The reviewed findings summarize the major advances in the understanding of additional, non conventional functions connected with the vast interactive potential of Vav1.
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Affiliation(s)
- Valeria Bertagnolo
- Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy.
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Buharalioglu CK, Song CY, Yaghini FA, Ghafoor HUB, Motiwala M, Adris T, Estes AM, Malik KU. Angiotensin II-induced process of angiogenesis is mediated by spleen tyrosine kinase via VEGF receptor-1 phosphorylation. Am J Physiol Heart Circ Physiol 2011; 301:H1043-55. [PMID: 21642504 DOI: 10.1152/ajpheart.01018.2010] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Spleen tyrosine kinase (Syk), expressed in endothelial cells, has been implicated in migration and proliferation and in vasculogenesis. This study was conducted to determine the contribution of Syk and the underlying mechanism to the angiogenic effect of ANG II and VEGF. Angiogenesis was determined by tube formation from the endothelial cell line EA.hy926 (EA) and human umbilical vein endothelial cells (HUVECs) and microvessel sprouting in rat aortic rings. ANG II (10 nM), EGF (30 ng/ml), and VEGF (50 ng/ml) stimulated EA cells and HUVECs to form tubular networks and increased aortic sprouting; these effects were blocked by VEGF receptor-1 and Flt-1 antibody (Flt-1/Fc) but not by the VEGF receptor-2 (Flk-1) antagonist SU-1498. ANG II increased the phosphorylation of Flt-1 but not Flk-1, whereas VEGF increased the phosphorylation of both receptors in EA cells and HUVECs. VEGF expression elicited by ANG II was not altered by Flt-1/Fc or SU-1498. EGF stimulated tube formation from EA cells and HUVECs and Flt-1 phosphorylation and aortic sprouting, which were blocked by the EGF receptor antagonist AG-1478 and Flt-1/Fc but not by SU-1498. ANG II-, EGF-, and VEGF-induced tube formation and aortic sprouting were attenuated by the Syk inhibitor piceatannol and by Syk short hairpin interfering (sh)RNA and small interfering RNA, respectively. ANG II, EGF, and VEGF increased Syk phosphorylation, which was inhibited by piceatannol and Syk shRNA in EA cells and HUVECs. Neither piceatannol nor Syk shRNA altered ANG II-, EGF-, or VEGF-induced phosphorylation of Flt-1. These data suggest that ANG II stimulates angiogenesis via transactivation of the EGF receptor, which promotes the phosphorylation of Flt-1 and activation of Syk independent of VEGF expression.
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Affiliation(s)
- Cuneyt K Buharalioglu
- Department of Pharmacology, College of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA
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Pamuk ON, Tsokos GC. Spleen tyrosine kinase inhibition in the treatment of autoimmune, allergic and autoinflammatory diseases. Arthritis Res Ther 2010; 12:222. [PMID: 21211067 PMCID: PMC3046528 DOI: 10.1186/ar3198] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Spleen tyrosine kinase (Syk) is involved in the development of the adaptive immune system and has been recognized as being important in the function of additional cell types, including platelets, phagocytes, fibroblasts, and osteoclasts, and in the generation of the inflammasome. Preclinical studies presented compelling evidence that Syk inhibition may have therapeutic value in the treatment of rheumatoid arthritis and other forms of arthritis, systemic lupus erythematosus, autoimmune cytopenias, and allergic and autoinflammatory diseases. In addition, Syk inhibition may have a place in limiting tissue injury associated with organ transplant and revascularization procedures. Clinical trials have documented exciting success in the treatment of patients with rheumatoid arthritis, autoimmune cytopenias, and allergic rhinitis. While the extent and severity of side effects appear to be limited so far, larger studies will unravel the risk involved with the clinical benefit.
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Affiliation(s)
- Omer N Pamuk
- Division of Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, CLS-928, Boston, MA 02115, USA
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Miksits M, Maier-Salamon A, Vo TPN, Sulyok M, Schuhmacher R, Szekeres T, Jäger W. Glucuronidation of piceatannol by human liver microsomes: major role of UGT1A1, UGT1A8 and UGT1A10. J Pharm Pharmacol 2010; 62:47-54. [PMID: 20722998 DOI: 10.1211/jpp.62.01.0004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES Piceatannol, a dietary polyphenol present in grapes and wine, is known for its promising anticancer and anti-inflammatory activity. The aim of this study was to analyse the concentration-dependent glucuronidation of piceatannol in vitro. METHODS To determine the glucuronidation of piceatannol, experiments were conducted with human liver microsomes as well as using a panel of 12 recombinant UDP-glucuronosyltransferase isoforms. Furthermore, the chemical structures of novel glucuronides were identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS). KEY FINDINGS Along with piceatannol it was possible to identify three metabolites whose structures were identified by LC-MS/MS as piceatannol monoglucuronides (M1-M3). Formation of M1 and M3 exhibited a pattern of substrate inhibition, with apparent K(i) and V(max)/K(m) values of 103 +/- 26.6 microm and 3.8 +/- 1.3 microl/mg protein per min, respectively, for M1 and 233 +/- 61.4 microm and 19.8 +/- 9.5 microl/mg protein per min, respectively, for M3. In contrast, formation of metabolite M2 followed classical Michaelis-Menten kinetics, with a K(m) of 18.9 +/- 8.1 microm and a V(max) of 0.21 +/- 0.02 nmol/mg protein per min. Incubation in the presence of human recombinant UDP-glucuronosyltransferases (UGTs) demonstrated that M1 was formed nearly equally by UGT1A1 and UGT1A8. M2 was preferentially catalysed by UGT1A10 and to a lesser extent by UGT1A1 and UGT1A8. The formation of M3, however, was mainly catalysed by UGT1A1 and UGT1A8. CONCLUSIONS Our results elucidate the importance of piceatannol glucuronidation in the human liver, which must be taken into account in humans after dietary intake of piceatannol.
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Affiliation(s)
- Michaela Miksits
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
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Miksits M, Sulyok M, Schuhmacher R, Szekeres T, Jäger W. In-vitro sulfation of piceatannol by human liver cytosol and recombinant sulfotransferases. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.02.0007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
The aim of this study was to investigate the concentration-dependent sulfation of piceatannol, a dietary polyphenol present in grapes and wine and known for its promising anticancer and anti-inflammatory activity.
Methods
Sulfation of piceatannol was investigated in human liver cytosol as well as using a panel of recombinant sulfotransferase isoforms. Furthermore, the chemical structures of novel sulfates were identified by liquid chromatography/mass spectrometry (LC/MS).
Key findings
In the presence of 3′-phosphoadenosine-5′-phosphosulfate, three metabolites could be detected whose structures were identified by LC/MS/MS as piceatannol disulfate (M1) and two monosulfates (M2, M3). The kinetics of M1 formation exhibited a pattern of substrate inhibition with a Ki of 21.8 ± 11.3 μM and a Vmax/Km of 7.63 ± 1.80 μl/mg protein per min. Formation of M2 and M3 showed sigmoidal kinetics with apparent Km and Vmax values of 27.1 ± 2.90 μM and 118.4 ± 4.38 pmol/mg protein per min, respectively, for M2; and 35.7 ± 2.70 μM and 81.8 ± 2.77 pmol/mg protein per min, respectively, for M3. Incubation in the presence of human recombinant sulfotransferases (SULTs) demonstrated that M1 was formed equally by SULT1A1*1 and SULT1B1 and to a lesser extent by SULT1A1*2. M2 was preferentially catalysed by SULT1A1*2, 1A3 and 1E1. The formation of M3, however, was mainly catalysed by SULT1A2*1 and SULT1A3.
Conclusions
Our results elucidate the importance of piceatannol sulfation in human liver, which must be taken into account in humans after dietary intake of piceatannol.
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Affiliation(s)
- Michaela Miksits
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
| | - Michael Sulyok
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Applied Life Sciences, Vienna, Austria
| | - Rainer Schuhmacher
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Applied Life Sciences, Vienna, Austria
| | - Thomas Szekeres
- Clinical Institute for Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - Walter Jäger
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
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Vav1 and PU.1 are recruited to the CD11b promoter in APL-derived promyelocytes: role of Vav1 in modulating PU.1-containing complexes during ATRA-induced differentiation. Exp Cell Res 2009; 316:38-47. [PMID: 19747912 DOI: 10.1016/j.yexcr.2009.09.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Revised: 08/03/2009] [Accepted: 09/02/2009] [Indexed: 02/08/2023]
Abstract
Vav1 plays an important role in the all-trans retinoic acid (ATRA)-induced completion of the differentiation program of acute promyelocytic leukemia (APL)-derived cells, in which it strengthens the drug effects and is involved in the regulation of maturation-related proteins, such as the CD11b surface antigen. In both myeloid and lymphoid cells, accumulating data attribute to the multidomain protein Vav1 a functional relevance in the control of gene expression, by direct interaction with chromatin remodeling and/or transcriptional proteins. The present study provides evidence that, in the APL-derived NB4 cell line, Vav1 and the transcription factor PU.1 cooperate in regulating the ATRA-induced CD11b expression. Both chromatin immunoprecipitation (ChIP) experiments and electrophoretic mobility shift assays (EMSA) indicate that Vav1 and PU.1 are recruited to CD11b promoter. Even if the two proteins may participate in diverse protein/DNA complexes, the amounts of complexes including PU.1 seem to be dependent on the interaction of this transcription factor with tyrosine-phosphorylated Vav1. The reported data suggest that the ATRA-induced increase of Vav1 expression and tyrosine phosphorylation may be involved in recruiting PU.1 to its consensus sequence on the CD11b promoter and, ultimately, in regulating CD11b expression during the late stages of neutrophil differentiation of APL-derived promyelocytes.
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Lee B, Lee EJ, Kim DI, Park SK, Kim WJ, Moon SK. Inhibition of proliferation and migration by piceatannol in vascular smooth muscle cells. Toxicol In Vitro 2009; 23:1284-91. [PMID: 19631264 DOI: 10.1016/j.tiv.2009.07.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 07/04/2009] [Accepted: 07/17/2009] [Indexed: 10/20/2022]
Abstract
Piceatannol (3,5,3',4'-tetrahydroxy- trans-stilbene), a resveratrol analogue, is a polyphenol present in the skins of grapes and in wine and other foods. The present study aimed to investigate for the first time the cardioprotective effects of piceatannol on vascular smooth muscle cells (VSMC). The treatment of cells with piceatannol inhibited cell proliferation by reducing extracellular signal-regulated kinase (ERK) 1/2 and JNK activity in cultured VSMC in the presence of tumor necrosis factor-alpha (TNF-alpha). These inhibitory effects were also associated with G1 cell cycle arrest, and resulted in a decrease in cyclin-dependent kinases (CDKs) and cyclins. Piceatannol treatment strongly induced the expression of p21WAF1 via independence of p27KIP and p53 expression. The effect of piceatannol was not restricted to cell proliferation, as TNF-alpha-induced invasion and migration was also suppressed in VSMC. Moreover, piceatannol treatment strongly decreased matrix metalloproteinase-9 (MMP-9) expression and promoter activity in a dose-dependent manner in response to TNF-alpha. It was further demonstrated that piceatannol abrogated the transcriptional activity of nuclear factor kappa B (NF-kappaB), an important nuclear transcription factor involved in MMP-9 expression. Overall, these results demonstrate that piceatannol inhibits proliferation and migration of VSMC treated with TNF-alpha. Therefore, piceatannol may be an effective therapeutic approach to treat atherosclerosis.
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Affiliation(s)
- Beobyi Lee
- Department of Anatomy, College of Medicine, Konkuk University, Chungju City, Chungbuk 380-701, South Korea
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Lee YM, Lim DY, Cho HJ, Seon MR, Kim JK, Lee BY, Park JHY. Piceatannol, a natural stilbene from grapes, induces G1 cell cycle arrest in androgen-insensitive DU145 human prostate cancer cells via the inhibition of CDK activity. Cancer Lett 2009; 285:166-73. [PMID: 19487074 DOI: 10.1016/j.canlet.2009.05.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Revised: 05/08/2009] [Accepted: 05/10/2009] [Indexed: 10/20/2022]
Abstract
We have examined whether and by what mechanism piceatannol inhibits cell cycle progression in DU145 cells. The treatment of cells with piceatannol for 24h resulted in an increase in the percentage of cells in G1 phase and dose-dependent decreases in [(3)H]thymidine incorporation, as well as in protein levels of cyclin A, cyclin D1, and cyclin-dependent kinase (CDK)2 and CDK4. Piceatannol exerted no effect on the levels of p21(WAF1/CIP1) or p27(KIP1). Piceatannol reduced CDK4 and CDK2 activity. These results indicate that delaying G1 cell cycle progression contributes to the piceatannol-mediated inhibition of DU145 cell growth, which may be mediated via the inhibition of CDK activity.
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Affiliation(s)
- Yeo Myeong Lee
- Department of Food Science and Nutrition, Hallym University, Chuncheon 200-702, Republic of Korea
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37
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Discovery and SAR of novel 4-thiazolyl-2-phenylaminopyrimidines as potent inhibitors of spleen tyrosine kinase (SYK). Bioorg Med Chem Lett 2008; 18:6231-5. [DOI: 10.1016/j.bmcl.2008.09.106] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Revised: 09/25/2008] [Accepted: 09/29/2008] [Indexed: 11/22/2022]
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38
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Kim YH, Kwon HS, Kim DH, Cho HJ, Lee HS, Jun JG, Park JHY, Kim JK. Piceatannol, a stilbene present in grapes, attenuates dextran sulfate sodium-induced colitis. Int Immunopharmacol 2008; 8:1695-702. [PMID: 18773974 DOI: 10.1016/j.intimp.2008.08.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 08/05/2008] [Accepted: 08/07/2008] [Indexed: 01/10/2023]
Abstract
Piceatannol (3,5,3',4'-tetrahydroxy-trans-stilbene; PIC) is a polyphenol found in grapes. It is known as a protein kinase inhibitor that modifies multiple cellular targets, exerting immunosuppressive and antitumorigenic activities in several cell lines. The purpose of the present work was to evaluate the anti-inflammatory effect of PIC on dextran sulfate sodium (DSS)-induced colitis. Experimental colitis was induced in BALB/c mice by dissolving 5% DSS in their drinking water for 7 days. PIC (1, 2.5, 5, or 10 mg/kg body weight) was administrated daily per oral route for 7 days. A significant blunting of weight loss and clinical signs was observed in DSS-exposed, PIC-treated mice when compared to vehicle-treated mice. This was associated with a remarkable amelioration of the disruption of the colonic architecture, a significant reduction in colonic myeloperoxidase (MPO) activity, and a decrease in production of inflammatory mediators such as nitric oxide (NO), prostaglandin (PG) E2, and pro-inflammatory cytokines. The present data indicate that further evaluation of the potential of PIC as an agent for the prevention and/or treatment of inflammatory bowel diseases in human clinical studies is warranted.
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Affiliation(s)
- Yoon Hee Kim
- Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University, Chuncheon 200-702, Republic of Korea
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Kuo PL, Hsu YL. The grape and wine constituent piceatannol inhibits proliferation of human bladder cancer cells via blocking cell cycle progression and inducing Fas/membrane bound Fas ligand-mediated apoptotic pathway. Mol Nutr Food Res 2008; 52:408-18. [PMID: 18381677 DOI: 10.1002/mnfr.200700252] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Piceatannol (3,3',4,5'-Tetrahydroxy-trans-stilbene) is a polyphenol present in grapes and wine. Piceatannol is a protein kinase inhibitor that modifies multiple cellular targets exerting immunosuppressive, antileukemic, and antitumorigenic activities in several cell lines and animal models. In this study, the antiproliferative activity of piceatannol was investigated. The results showed that piceatannol inhibited the proliferation of T24 and HT1376 human bladder cancer cells by blocking cell cycle progression in the G0/G1 phase and inducing apoptosis. ELISA showed that the G0/G1 phase arrest is due to an increased in the expression of p21/WAF1. An enhancement in Fas/APO-1 and membrane-bound Fas ligand (mFasL) might be responsible for the apoptotic effect induced by piceatannol. Our study reports the novel finding, that the induction of p21/WAF1 and activity of the Fas/mFasL apoptotic system may participate in the antiproliferative activity of piceatannol in T24 and HT1376 cells.
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Affiliation(s)
- Po-Lin Kuo
- Cell Biology Laboratory, Department of Biotechnology, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan
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40
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Abstract
The guinea pig has been the most commonly used small animal species in preclinical studies related to asthma and COPD. The primary advantages of the guinea pig are the similar potencies and efficacies of agonists and antagonists in human and guinea pig airways and the many similarities in physiological processes, especially airway autonomic control and the response to allergen. The primary disadvantages to using guinea pigs are the lack of transgenic methods, limited numbers of guinea pig strains for comparative studies and a prominent axon reflex that is unlikely to be present in human airways. These attributes and various models developed in guinea pigs are discussed.
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Affiliation(s)
- Brendan J Canning
- Johns Hopkins Asthma and Allergy Center, 5501 Hopkins Bayview Circle, Baltimore, MD 21224, USA.
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41
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Lee HM, Won KJ, Kim J, Park HJ, Kim HJ, Roh HY, Lee SH, Lee CK, Kim B. Endothelin-1 Induces Contraction via a Syk-Mediated p38 Mitogen-Activated Protein Kinase Pathway in Rat Aortic Smooth Muscle. J Pharmacol Sci 2007; 103:427-33. [PMID: 17409631 DOI: 10.1254/jphs.fp0070039] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Although spleen tyrosine kinase (Syk) has crucial roles in various cells, its function on vascular smooth muscle contraction has not been determined. In the present study, we performed experiments to determine if Syk contributes to the endothelin-1 (ET-1)-mediated contraction in rat aortic smooth muscle. ET-1-induced contraction of aortic strips was inhibited by piceatannol, PD98059, and SB203580, inhibitors of Syk, extracellular signal-regulated kinase 1/2 (ERK1/2), and p38 mitogen-activated protein kinase (MAPK), respectively. Piceatannol also attenuated high K(+)-induced contraction. ET-1 dose-dependently enhanced the activity of Syk and this was inhibited by piceatannol in both rat aortic strip and rat aortic smooth muscle cells. The phosphorylation of p38 MAPK and heat shock protein 27 (HSP27), but not that of ERK1/2, in response to ET-1 was inhibited by both piceatannol and SB203580. These results suggest that Syk may play an important role in the regulation of aortic smooth muscle contraction induced by ET-1, which may be mediated by the p38 MAPK/HSP27 signaling pathway.
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MESH Headings
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Aorta/cytology
- Aorta/drug effects
- Aorta/physiology
- Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors
- Cells, Cultured
- Dose-Response Relationship, Drug
- Endothelin-1/pharmacology
- Enzyme Inhibitors/pharmacology
- Flavonoids/pharmacology
- Imidazoles/pharmacology
- Immunoblotting
- Immunoprecipitation
- In Vitro Techniques
- Intracellular Signaling Peptides and Proteins/antagonists & inhibitors
- Intracellular Signaling Peptides and Proteins/metabolism
- Male
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/physiology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Phosphorylation/drug effects
- Protein-Tyrosine Kinases/antagonists & inhibitors
- Protein-Tyrosine Kinases/metabolism
- Pyridines/pharmacology
- Rats
- Rats, Sprague-Dawley
- Stilbenes/pharmacology
- Syk Kinase
- Vasoconstriction/drug effects
- p38 Mitogen-Activated Protein Kinases/antagonists & inhibitors
- p38 Mitogen-Activated Protein Kinases/metabolism
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Affiliation(s)
- Hwan Myung Lee
- Department of Physiology, College of Medicine, Konkuk University, Danwol-dong, Chungju, Korea
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Chang JK, Hsu YL, Teng IC, Kuo PL. Piceatannol stimulates osteoblast differentiation that may be mediated by increased bone morphogenetic protein-2 production. Eur J Pharmacol 2006; 551:1-9. [PMID: 17026990 DOI: 10.1016/j.ejphar.2006.08.073] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2006] [Revised: 08/22/2006] [Accepted: 08/23/2006] [Indexed: 11/19/2022]
Abstract
Piceatannol (3,3',4,5'-tetrahydroxy-trans-stilbene) is a polyphenol present in grapes and wine. By means of alkaline phosphatase activity and osteocalcin enzyme-linked immunosorbent assay (ELISA), we have shown that piceatannol exhibits a significant induction of differentiation in immortalized fetal osteoblasts (hFOB), and osteosarcoma cells (MG-63). Alkaline phosphatase and osteocalcin are phenotypic markers for early-stage differentiated osteoblasts and terminally differentiated osteoblasts, respectively, our results indicate that piceatannol stimulate osteoblast differentiation at various stages (from maturation to terminally differentiated osteoblasts). Induction of differentiation by piceatannol was associated with increased bone morphogenetic protein-2 (BMP-2) production. Addition of purified BMP-2 protein did not increase the upregulation of alkaline phosphatase activity and osteocalcin secretion by piceatannol, whereas the BMP-2 antagonist noggin blocked piceatannol and BMP-2-mediated alkaline phosphatase activity, and osteocalcin secretion enhancement, indicating that BMP-2 production is required in piceatannol-mediated osteoblast maturation and differentiation. In conclusion, piceatannol increased BMP-2 synthesis, and this effect may contribute to its action on the induction of osteoblasts maturation and differentiation, followed by an increase of bone mass. Decreases in new bone formation, followed by estrogen deficiency or various pathologic factors, may contribute to the mechanisms involved in postmenopausal osteoporosis.
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Affiliation(s)
- Jiunn-Kae Chang
- Cell Biology Laboratory, Department of Biotechnology, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan
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Quillen EE, Haslam GC, Samra HS, Amani-Taleshi D, Knight JA, Wyatt DE, Bishop SC, Colvert KK, Richter ML, Kitos PA. Ectoadenylate Kinase and Plasma Membrane ATP Synthase Activities of Human Vascular Endothelial Cells. J Biol Chem 2006; 281:20728-20737. [PMID: 16714292 DOI: 10.1074/jbc.m513042200] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Formation of ATP from ADP on the external surface of vascular endothelial cells has been attributed to plasma membrane ATP synthase, ectoadenylate kinase (ecto-AK), and/or ectonucleoside diphosphokinase. These enzymes or their catalytic products have been causatively linked to the elaboration of vascular networks and the regulation of capillary function. The amount of ATP generated extracellularly is small, requiring sensitive analytical methods for quantification. Human umbilical vein endothelial cells were used to revisit extracellular ATP synthesis using a reliable tetrazolium reduction assay and multiwell plate cultures. Test conditions compatible with AK stability were established. Extracellular AK activity was found to be <1% of the total (intracellular and extracellular), raising the possibility that the external enzyme could have leaked from living cells and/or a few dying cells. To determine whether AK inadvertently leaked from the cells, the activity of another cytoplasmic enzyme, glucose-6-phosphate dehydrogenase (G6PD), was also measured. G6PD is present in the cytoplasm in similar abundance to AK. The activity ratio of G6PD (extracellular/total) was found to be similar to that of AK. Because G6PD in the medium was probably due to leakage, other cytoplasmic macromolecules, including AK, should be released proportionately from the cells. The role of plasma membrane ATP synthase in extracellular ATP formation was examined using Hanks' balanced salt solution with and without selective inhibitors of AK and ATP synthase activities. With P(1),P(5)-di(adenosine 5')-pentaphosphate (inhibitor of AK activity), no extracellular ATP synthesis was detected, whereas with oligomycin, piceatannol, and aurovertin (inhibitors of F(1)F(0)-ATP synthase and F(1)-ATPase activities), no inhibition of extracellular ATP synthesis was observed. AK activity alone could account for the observed extracellular ATP synthesis. The possible impact of ADP impurity in the assays is discussed.
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Affiliation(s)
- Ellen E Quillen
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
| | - Gale C Haslam
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
| | - Hardeep S Samra
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
| | - Darius Amani-Taleshi
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
| | - Jeffrey A Knight
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
| | - Diane E Wyatt
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
| | - Stephanie C Bishop
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
| | - Kim K Colvert
- Department of Physical Sciences, Ferris State University, Big Rapids, Michigan 49307
| | - Mark L Richter
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534.
| | - Paul A Kitos
- Department of Molecular Biosciences, Kansas University, Lawrence, Kansas 66045-7534
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Kim JY, Kwon EY, Lee YS, Kim WB, Ro JY. Eupatilin blocks mediator release via tyrosine kinase inhibition in activated guinea pig lung mast cells. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2005; 68:2063-80. [PMID: 16326424 DOI: 10.1080/15287390500177024] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Eupatilin, an extract from Artemisia asiatica Nakai, is known to exert anti-gastric ulcer, anticancer, and anti-inflammatory effects. The aim of this study was to elucidate whether eupatilin has antiallergic reactions in activated guinea pig lung mast cells compared to apigenin and genistein. Mast cells were purified from guinea pig lung tissues by using enzyme digestion and rough and discontinuous density Percoll gradient. The purified mast cells were sensitized with immunoglobulin (Ig) G(1) (anti-OVA antibody) and challenged with ovalbumin (OVA). Histamine was assayed using an automated fluorometric analyzer, leukotrienes by radioimmunoassay, and tyrosine phosphorylation by immunoblotting. Intracellular Ca(2+) was analyzed by confocal laser scanning microscopy, protein kinase C (PKC) activity using protein phosphorylated with [gamma-(32)P]ATP, and phopholipase D activity (PLD) and phosphatidic acid by using labeled phosphatidyl alcohol. Eupatilin, apigenin, or genistein reduced histamine release and leukotriene synthesis in a does-dependent manner. Eupatilin inhibited mediators to a greater extent than apigenin or genistein. Eupatilin, apigenin, and genistein initially blocked phosphorylation of Syk tyrosine and Ca(2+) influx, PLD activity, phosphatidic acid, and Ca(2+)-dependent PKC alpha/betaII activities during mast cell activation in a dose-dependent manner. Our data suggest that eupatilin initially inhibits Syk kinase, and then blocks downstream multisignal pathways and Ca(2+) influx during mast cell activation triggered by a specific antigen-antibody reaction. Thus, eupatilin may have use clinically as a treatment for inflammatory disorders associated with allergic diseases including asthma.
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Affiliation(s)
- Ji Young Kim
- Research Laboratories, Dong-A Pharmaceutics Co. Ltd., Yonginsi, Kyunggido, Korea
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Matsubara S, Koya T, Takeda K, Joetham A, Miyahara N, Pine P, Masuda ES, Swasey CH, Gelfand EW. Syk activation in dendritic cells is essential for airway hyperresponsiveness and inflammation. Am J Respir Cell Mol Biol 2005; 34:426-33. [PMID: 16339999 PMCID: PMC2644204 DOI: 10.1165/rcmb.2005-0298oc] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
We evaluated the role of Syk, using an inhibitor, on allergen-induced airway hyperresponsiveness (AHR) and airway inflammation in a system shown to be B cell- and mast cell-independent. Sensitization of BALB/c mice with ovalbumin (OVA) and alum after three consecutive OVA challenges resulted in AHR to inhaled methacholine and airway inflammation. The Syk inhibitor R406 (30 mg/kg, administered orally, twice daily) prevented the development of AHR, increases in eosinophils and lymphocytes and IL-13 levels in bronchoalveolar lavage (BAL) fluid, and goblet cell metaplasia when administered after sensitization and before challenge with OVA. Levels of IL-4, IL-5, and IFN-gamma in BAL fluid and allergen-specific antibody levels in serum were not affected by treatment. Because many of these responses may be influenced by dendritic cell function, we investigated the effect of R406 on bone marrow-derived dendritic cell (BMDC) function. Co-culture of BMDC with immune complexes of OVA and IgG anti-OVA together with OVA-sensitized spleen mononuclear cells resulted in increases in IL-13 production. IL-13 production was inhibited if the BMDCs were pretreated with the Syk inhibitor. Intratracheal transfer of immune complex-pulsed BMDCs (but not nonpulsed BMDCs) to naive mice before airway allergen challenge induced the development of AHR and increases in BAL eosinophils and lymphocytes. All of these responses were inhibited if the transferred BMDCs were pretreated with R406. These results demonstrate that Syk inhibition prevents allergen-induced AHR and airway inflammation after systemic sensitization and challenge, at least in part through alteration of DC function.
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Affiliation(s)
- Shigeki Matsubara
- Department of Pediatrics, National Jewish Medical and Research Center, 1400 Jackson Street, Denver, CO, 80206, USA
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Matsubara S, Li G, Takeda K, Loader JE, Pine P, Masuda ES, Miyahara N, Miyahara S, Lucas JJ, Dakhama A, Gelfand EW. Inhibition of spleen tyrosine kinase prevents mast cell activation and airway hyperresponsiveness. Am J Respir Crit Care Med 2005; 173:56-63. [PMID: 16192454 PMCID: PMC2662982 DOI: 10.1164/rccm.200503-361oc] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Spleen tyrosine kinase (Syk) is important for Fc and B-cell receptor-mediated signaling. OBJECTIVE To determine the activity of a specific Syk inhibitor (R406) on mast cell activation in vitro and on the development of allergen-induced airway hyperresponsiveness (AHR) and inflammation in vivo. METHODS AHR and inflammation were induced after 10 d of allergen (ovalbumin [OVA]) exposure exclusively via the airways and in the absence of adjuvant. This approach was previously established to be IgE, FcepsilonRI, and mast cell dependent. Alternatively, mice were passively sensitized with OVA-specific IgE, followed by limited airway challenge. In vitro, the inhibitor was added to cultures of IgE-sensitized bone marrow-derived mast cells (BMMCs) before cross-linking with allergen. RESULTS The inhibitor prevented OVA-induced degranulation of passively IgE-sensitized murine BMMCs and inhibited the production of interleukin (IL)-13, tumor necrosis factor alpha, IL-2, and IL-6 in these sensitized BMMCs. When administered in vivo, R406 inhibited AHR, which developed in BALB/c mice exposed to aerosolized 1% OVA for 10 consecutive d (20 min/d), as well as pulmonary eosinophilia and goblet cell metaplasia. A similar inhibition of AHR was demonstrated in mice passively sensitized with OVA-specific IgE and exposed to limited airway challenge. CONCLUSION This study delineates a functional role for Syk in the development of mast cell- and IgE-mediated AHR and airway inflammation, and these results indicate that inhibition of Syk may be a target in the treatment of allergic asthma.
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Affiliation(s)
- Shigeki Matsubara
- Department of Pediatrics, National Jewish Medical and Research Center, 1400 Jackson Street, Denver, CO 80206, USA
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Chue SC, Seow CJ, Duan W, Yeo KSL, Koh AHM, Wong WSF. Inhibitor of p42/44 mitogen-activated protein kinase, but not p38 MAPK, attenuated antigen challenge of guinea pig airways in vitro. Int Immunopharmacol 2005; 4:1089-98. [PMID: 15222984 DOI: 10.1016/j.intimp.2004.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2003] [Revised: 01/21/2004] [Accepted: 05/04/2004] [Indexed: 10/26/2022]
Abstract
Upon cross-linking of the high-affinity IgE receptors on mast cells, a family of mitogen-activated protein kinases (MAPKs) is activated. The present study examined the effects of p42/44 MAPK kinase inhibitor U0126 and p38 MAPK inhibitors SB220025 and PD169316 on ovalbumin (OVA)-induced anaphylactic contraction of isolated guinea pig bronchi and release of histamine and peptidoleukotrienes from lung fragments. Guinea pigs were actively sensitized by OVA. OVA induced anaphylactic bronchial contractions, and release of histamine and peptidoleukotrienes from lung fragments. U0126 (0.3-30 microM), but not SB220025 and PD169316 (3-30 microM), slightly suppressed peak OVA-induced bronchial contraction but markedly reduced anaphylactical contraction over a 50-min period in a dose-dependent manner. U0126 did not inhibit bronchial contractions induced by KCl, histamine or leukotriene D4. U0126 produced a slight reduction in OVA-induced release of histamine but a significant inhibition on the release of peptidoleukotrienes from lung fragments. Exogenous arachidonic acid-induced release of peptidoleukotrienes was not blocked by U0126. SB220025 and PD169316 had no effect on OVA-induced release of histamine and peptidoleukotrienes. Our data indicate that inhibitor of p42/44 MAPK kinase, but not p38 MAPK, can reduce antigen-induced release of peptidoleukotrienes leading to a rapid resolution of anaphylactic bronchial contraction, and may have therapeutic potential for allergic asthma.
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Affiliation(s)
- Sung Chian Chue
- Department of Pharmacology, Faculty of Medicine, National University of Singapore, Singapore
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Matsuda H, Tewtrakul S, Morikawa T, Yoshikawa M. Anti-allergic activity of stilbenes from Korean rhubarb (Rheum undulatum L.): structure requirements for inhibition of antigen-induced degranulation and their effects on the release of TNF-alpha and IL-4 in RBL-2H3 cells. Bioorg Med Chem 2005; 12:4871-6. [PMID: 15336266 DOI: 10.1016/j.bmc.2004.07.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2004] [Revised: 07/03/2004] [Accepted: 07/03/2004] [Indexed: 11/29/2022]
Abstract
Stilbenes isolated from the rhizomes of Rheum undulatum (Korean rhubarb) and the related compounds were investigated on their anti-allergic activities. The results revealed that 3,5,4'-trimethylpiceatannol exhibited the most potent inhibition against beta-hexosaminidase release as a marker of degranulation in RBL-2H3 cells with IC(50) of 2.1 microM, followed by trimethylresveratrol (IC(50)=5.1 microM). Structural requirements of stilbenes for the activity are as follows: (1) The oxygen functions (-OCH(3), -OH), especially methoxyl groups, are essential and their positions on aromatic rings are important for the activity; (2) the alpha-beta double bond increased the activity; (3) the glycoside moiety dramatically decreased the activity; and (4) the substitution group at the 3'-position in trimethylresveratrol (3,5,4'-trimethoxystilbene) was preferably OH>H>OCH(3) for the activity. Several active stilbenes (piceatannol, 3,5,4'-trimethylpiceatannol, resveratrol, trimethylresveratrol) also inhibited ionomycin-induced beta-hexosaminidase release, suggesting that inhibition of Ca(2+) influx or degranulation mechanisms after Ca(2+) influx is important for their activities. Piceatannol, 3,5,4'-trimethylpiceatannol, resveratrol, and trimethylresveratrol also significantly inhibited antigen-induced release of TNF-alpha and IL-4 in RBL-2H3 cells.
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Affiliation(s)
- Hisashi Matsuda
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan
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Vazquez G, Wedel BJ, Kawasaki BT, Bird GSJ, Putney JW. Obligatory role of Src kinase in the signaling mechanism for TRPC3 cation channels. J Biol Chem 2004; 279:40521-8. [PMID: 15271991 DOI: 10.1074/jbc.m405280200] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Members of the canonical transient receptor potential (TRPC) subfamily of cation channels are candidates for capacitative and non-capacitative Ca2+ entry channels. When ectopically expressed in cell lines, TRPC3 can be activated by phospholipase C-mediated generation of diacylglycerol or by addition of synthetic diacylglycerols, independently of Ca2+ store depletion. Apart from this mode of regulation, little is known about other receptor-dependent signaling events that modulate TRPC3 activity. In the present study the role of tyrosine kinases in receptor- and diacylglycerol-dependent activation of TRPC3 was investigated. In HEK293 cells stably expressing TRPC3, pharmacological inhibition of tyrosine kinases, and specifically of Src kinases, abolished activation of TRPC3 by muscarinic receptor stimulation and by diacylglycerol. Channel regulation was lost following expression of a dominant-negative mutant of Src, or when TRPC3 was expressed in an Src-deficient cell line. In both instances, wild-type Src restored TRPC3 regulation. We conclude that Src plays an obligatory role in the mechanism for receptor and diacylglycerol activation of TRPC3.
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Affiliation(s)
- Guillermo Vazquez
- Laboratory of Signal Transduction, NIEHS, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina 27709, USA.
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Wong WSF, Leong KP. Tyrosine kinase inhibitors: a new approach for asthma. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2004; 1697:53-69. [PMID: 15023350 DOI: 10.1016/j.bbapap.2003.11.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/25/2003] [Accepted: 11/12/2003] [Indexed: 01/21/2023]
Abstract
The pathogenesis of allergic asthma involves the interplay of inflammatory cells and airway-resident cells, and of their secreted mediators including cytokines, chemokines, growth factors and inflammatory mediators. Receptor tyrosine kinases are important for the pathogenesis of airway remodeling. Activation of epidermal growth factor (EGF) receptor kinase and platelet-derived growth factor (PDGF) receptor kinase leads to hyperplasia of airway smooth muscle cells, epithelial cells and goblet cells. Stimulation of non-receptor tyrosine kinases (e.g. Lyn, Lck, Syk, ZAP-70, Fyn, Btk, Itk) is the earliest detectable signaling response upon antigen-induced immunoreceptor activation in inflammatory cells. Cytokine receptor dimerization upon ligand stimulation induces activation of Janus tyrosine kinases (JAKs), leading to recruitment and phosphorylation of signal transducer and activator of transcription (STAT) for selective gene expression regulation. Activation of chemokine receptors can trigger JAK-STAT pathway, Lck, Fyn, Lyn, Fgr, and Syk/Zap-70 to induce chemotaxis of inflammatory cells. Inhibitors of tyrosine kinases have been shown in vitro to block growth factor-induced hyperplasia of airway-resident cells; antigen-induced inflammatory cell activation and cytokine synthesis; cytokine-mediated pro-inflammatory gene expression in inflammatory and airway cells; and chemokine-induced chemotaxis of inflammatory cells. Recently, anti-inflammatory effects of tyrosine kinase inhibitors (e.g. genistein, tyrphostin AG213, piceatannol, tyrphostin AG490, WHI-P97, WHI-P131, Syk antisense) in animal models of allergic asthma have been reported. Therefore, development of inhibitors of tyrosine kinases can be a very attractive strategy for the treatment of asthma.
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Affiliation(s)
- W S Fred Wong
- Department of Pharmacology, Faculty of Medicine, National University of Singapore, MD2 18 Medical Drive, Singapore 117597, Singapore.
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