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Bae J, Kumazoe M, Lee KW, Fujimura Y, Tachibana H. 67-kDa laminin receptor mediates oolonghomobisflavan B-induced cell growth inhibition in melanoma. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 118:154970. [PMID: 37516056 DOI: 10.1016/j.phymed.2023.154970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/12/2023] [Accepted: 07/15/2023] [Indexed: 07/31/2023]
Abstract
BACKGROUND Oolonghomobisflavans are unique polyphenols found in oolong teas. Oolonghomobisflavan B (OHBFB), a dimer of (-)-epigallocatechin-3-O-gallate (EGCG), is an active compound found in green tea. PURPOSE OHBFB has been reported to exert an inhibitory effect on lipase enzyme activity. However, little is known regarding its intercellular signaling induction effect. Further, there are no reports describing the anti-cancer effects of OHBFB. METHODS The effect of OFBFB on B16 melanoma cells was evaluated by cell counting, and its mechanisms were determined by western blot analysis with or without protein phosphatase 2A (PP2A) inhibitor treatment. Intracellular cyclic adenosine monophosphate (cAMP) levels were evaluated by time-resolved fluorescence resonance energy transfer analysis. Quartz crystal microbalance (QCM) analysis was performed to assess the binding of OHBFB to 67LR. RESULTS Cell growth assay and western blot analyses showed that OHBFB inhibited melanoma cell growth, followed by myosin phosphatase target subunit 1 (MYPT1) and myosin regulatory light chain (MRLC) dephosphorylation via protein phosphatase 2A (PP2A)-dependent mechanisms. These effects are mediated by intracellular cAMP- and protein kinase A (PKA) A-dependent mechanisms. QCM analysis identified the 67-kDa laminin receptor (67LR) as an OHBFB receptor with a Kd of 3.7 µM. We also demonstrated for the first time that OHBFB intake suppresses tumor growth in vivo. CONCLUSIONS Taken together, these results indicate that the cAMP/PKA/PP2A/MYPT1/MRLC pathway is a key mediator of melanoma cell growth inhibition following OHBFB binding to 67LR and that OHBFB suppresses tumor growth in vivo.
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Affiliation(s)
- Jaehoon Bae
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan; Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 181 Ipsin-gil, Jeongeup-si, Jeonbuk 580-185, Republic of Korea
| | - Motofumi Kumazoe
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Kwan-Woo Lee
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Yoshinori Fujimura
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Hirofumi Tachibana
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan.
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Bae J, Kumazoe M, Murata K, Fujimura Y, Tachibana H. Procyanidin C1 Inhibits Melanoma Cell Growth by Activating 67-kDa Laminin Receptor Signaling. Mol Nutr Food Res 2020; 64:e1900986. [PMID: 32103628 DOI: 10.1002/mnfr.201900986] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 02/06/2020] [Indexed: 12/11/2022]
Abstract
SCOPE Procyanidin C1 (PC1) is an epicatechin trimer found mainly in grapes that is reported to provide several health benefits. However, little is known about the molecular mechanisms underlying these benefits. The aim of this study is to demonstrate the molecular mechanisms by which PC1 operates. METHODS AND RESULTS A 67-kDa laminin receptor (67LR) is identified as a cell surface receptor of PC1, with a Kd value of 2.8 µm. PC1 induces an inhibitory effect on growth, accompanied by dephosphorylation of the C-kinase potentiated protein phosphatase-1 inhibitor protein of 17 kDa (CPI17) and myosin regulatory light chain (MRLC) proteins, followed by actin cytoskeleton remodeling in melanoma cells. These actions are mediated by protein kinase A (PKA) and protein phosphatase 2A (PP2A) activation once PC1 is bound to 67LR. CONCLUSION It is demonstrated that PC1 elicits melanoma cell growth inhibition by activating the 67LR/PKA/PP2A/CPI17/MRLC pathway.
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Affiliation(s)
- Jaehoon Bae
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Motofumi Kumazoe
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kyosuke Murata
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Yoshinori Fujimura
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Hirofumi Tachibana
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
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Abstract
Metastasis of cells from primary site to distant organs involves a series of sequential steps, and molecules responsible for all these events are understandably considered as potential targets for metastasis management. Tea polyphenols, the secondary metabolites of the tea leaf Camellia sinensis, are increasingly being studied for their antimetastatic properties. In this article, effects of green tea polyphenols (GTP) and black tea polyphenols (BTP) on the molecules and events involved in metastasis are discussed in detail. As tea is a very popular beverage, tea polyphenols are expected to be potential chemopreventive agents that can be taken with normal diet and can be nontoxic due to their natural origin. However, individual variations in metabolic pathways, bioavailability, dose, and toxicity are some important factors that can modify the effectiveness of tea polyphenols within the human system.
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Affiliation(s)
- Niladri Bag
- Department of Horticulture, Sikkim University, Gangtok, India
| | - Arundhati Bag
- Department of Medical Biotechnology, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Gangtok, India
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Kaufmann CM, Letzel T, Grassmann J, Pfaffl MW. Effect of Perilla frutescens Extracts on Porcine Jejunal Epithelial Cells. Phytother Res 2016; 31:303-311. [PMID: 27958644 DOI: 10.1002/ptr.5750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 10/14/2016] [Accepted: 10/29/2016] [Indexed: 12/24/2022]
Abstract
Green-leaved Perilla frutescens extracts were investigated on their effect on cell proliferation of the porcine jejunal epithelial cell line, IPEC-J2, as well as on the gene expression of cell cycle or cancer-related genes. Some extracted compounds were, however, susceptible to degradation in cell culture medium, whereas others were found to be stable during the entire experimental time. Control experiments also included the assessment of H2 O2 generation in cell culture medium caused by oxidation of natural extract compounds, which was proved to be absent at low extract concentrations. A fast and significant inhibition of cell growth at low physiological extract concentrations could be observed. This finding, along with an immediate downregulation of 67 kDa laminin receptor and cyclin D1 expression, can be accounted to the presence of Perilla frutescens extract. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Christine M Kaufmann
- Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748, Garching, Germany.,Institute of Animal Physiology and Immunology Weihenstephan, Technical University of Munich, Weihenstephaner Berg 3, 85354, Freising, Germany
| | - Thomas Letzel
- Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748, Garching, Germany
| | - Johanna Grassmann
- Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748, Garching, Germany
| | - Michael W Pfaffl
- Institute of Animal Physiology and Immunology Weihenstephan, Technical University of Munich, Weihenstephaner Berg 3, 85354, Freising, Germany
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Kaufmann CM, Grassmann J, Letzel T. HPLC method development for the online-coupling of chromatographic Perilla frutescens extract separation with xanthine oxidase enzymatic assay. J Pharm Biomed Anal 2016; 124:347-357. [DOI: 10.1016/j.jpba.2016.03.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/01/2016] [Accepted: 03/03/2016] [Indexed: 12/12/2022]
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Zhou Q, Bennett LL, Zhou S. Multifaceted ability of naturally occurring polyphenols against metastatic cancer. Clin Exp Pharmacol Physiol 2016; 43:394-409. [DOI: 10.1111/1440-1681.12546] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 02/01/2023]
Affiliation(s)
- Qingyu Zhou
- Department of Pharmaceutical Sciences; College of Pharmacy; University of South Florida; Tampa Florida
| | | | - Shufeng Zhou
- Department of Pharmaceutical Sciences; College of Pharmacy; University of South Florida; Tampa Florida
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Laminin receptor is an interacting partner for viral outer capsid protein VP5 in grass carp reovirus infection. Virology 2016; 490:59-68. [PMID: 26848829 DOI: 10.1016/j.virol.2016.01.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 11/19/2015] [Accepted: 01/21/2016] [Indexed: 11/23/2022]
Abstract
Grass carp reovirus (GCRV) is responsible for viral hemorrhagic disease in cultured grass carp Ctenopharyngon idellus. Through yeast two-hybrid screen, laminin receptor (LamR) was identified as a potential interacting partner for the outer capsid protein VP5 of GCRV. We cloned and sequenced the gene encoding grass carp LamR. Viral attachment assay demonstrated the involvement of membrane-associated LamR in GCRV infection. Solid-phase overlay assays demonstrated that GCRV interacted with GST-tagged LamR in vitro. In contrast to VP7, GST-tagged VP5 was shown to associate with LamR in both pull-down and solid-phase blot overlay assays. With the reduction of LamR expression in CIK cells achieved by RNAi, remarkably reduced infection efficiency of GCRV was observed. CIK cells pretreated with polyclonal antibody against LamR resulted in dose-dependent inhibition of GCRV infection. These results collectively indicated that grass carp LamR was involved in GCRV infection by interacting with viral outer capsid protein VP5.
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Petriello MC, Newsome B, Hennig B. Influence of nutrition in PCB-induced vascular inflammation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:6410-8. [PMID: 23417440 PMCID: PMC3686851 DOI: 10.1007/s11356-013-1549-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 02/04/2013] [Indexed: 04/15/2023]
Abstract
The nutritional profile of an individual can influence the toxicity of persistent environmental toxicants. Polychlorinated biphenyls (PCBs), prevalent environmental pollutants, are highly lipid-soluble toxic compounds that biomagnify through trophic levels and pose cancer, neurocognitive, and atherosclerotic risk to human populations. There is a growing body of knowledge that PCBs can initiate inflammatory responses in vivo, and this inflammation can be either exacerbated or ameliorated by nutrition. Data indicate that diets high in certain dietary lipids such as omega-6 fatty acids can worsen PCB-induced vascular toxicity while diets enriched with bioactive food components such as polyphenols and omega-3 polyunsaturated fatty acids can improve the toxicant-induced inflammation. There is evidence that bioactive nutrients protect through multiple cell signaling pathways, but we have shown that lipid raft caveolae and the antioxidant defense controller nuclear factor (erythroid-derived 2)-like 2 (Nrf2) both play a predominant role in nutritional modulation of PCB-induced vascular toxicity. Interestingly, there appears to be an intimate cross-talk between caveolae-related proteins and cellular Nrf2, and focusing on the use of specific bioactive food components that simultaneously alter both pathways may produce a more effective and efficient cytoprotective response to toxicant exposure. The use of nutrition as a protective tool is an economically beneficial means to address the toxicity of persistent environmental toxicants and may become a sensible means to protect human populations from PCB-induced vascular inflammation and associated chronic diseases.
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Affiliation(s)
- Michael C. Petriello
- Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200
| | - Bradley Newsome
- Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200
| | - Bernhard Hennig
- Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200
- University of Kentucky SRP Center, University of Kentucky, Lexington, KY 40536-0200
- Corresponding author: Kentucky SRP Center, Room 599, Wethington Building, 900 South Limestone Street, University of Kentucky, Lexington, KY 40536-0200, USA. Phone: (859) 218-1343; Fax: (859) 257-1811;
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Ren X, Guo X, Chen L, Guo M, Peng N, Li R. Attenuated migration by green tea extract (−)-epigallocatechin gallate (EGCG): involvement of 67 kDa laminin receptor internalization in macrophagic cells. Food Funct 2014; 5:1915-9. [PMID: 24953562 DOI: 10.1039/c4fo00143e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inhibition of macrophagic cell migration induced by green tea polyphenol EGCG may be linked to the internalization of 67 kDa laminin receptor.
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Affiliation(s)
- Xuezhi Ren
- Department of Neurology
- Shaanxi Provincial People's Hospital
- Xi'an 710068, China
- The Third Affiliated Hospital
- Xi'an Jiaotong University School of Medicine
| | - Xingzhi Guo
- Department of Neurology
- Shaanxi Provincial People's Hospital
- Xi'an 710068, China
- The Third Affiliated Hospital
- Xi'an Jiaotong University School of Medicine
| | - Li Chen
- Department of Neurology
- Shaanxi Provincial People's Hospital
- Xi'an 710068, China
| | - Minxia Guo
- Department of Neurology
- Shaanxi Provincial People's Hospital
- Xi'an 710068, China
| | - Ning Peng
- Department of Neurology
- Shaanxi Provincial People's Hospital
- Xi'an 710068, China
| | - Rui Li
- Department of Neurology
- Shaanxi Provincial People's Hospital
- Xi'an 710068, China
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