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Governa P, Marchi M, Cocetta V, De Leo B, Saunders PTK, Catanzaro D, Miraldi E, Montopoli M, Biagi M. Effects of Boswellia Serrata Roxb. and Curcuma longa L. in an In Vitro Intestinal Inflammation Model Using Immune Cells and Caco-2. Pharmaceuticals (Basel) 2018; 11:ph11040126. [PMID: 30463367 PMCID: PMC6316569 DOI: 10.3390/ph11040126] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/14/2018] [Accepted: 11/16/2018] [Indexed: 12/22/2022] Open
Abstract
Inflammatory bowel diseases, which consist of chronic inflammatory conditions of the colon and the small intestine, are considered a global disease of our modern society. Recently, the interest toward the use of herbal therapies for the management of inflammatory bowel diseases has increased because of their effectiveness and favourable safety profile, compared to conventional drugs. Boswellia serrata Roxb. and Curcuma longa L. are amongst the most promising herbal drugs, however, their clinical use in inflammatory bowel diseases is limited and little is known on their mechanism of action. The aim of this work was to investigate the effects of two phytochemically characterized extracts of B. serrata and C. longa in an in vitro model of intestinal inflammation. Their impact on cytokine release and reactive oxygen species production, as well as the maintenance of the intestinal barrier function and on intestinal mucosa immune cells infiltration, has been evaluated. The extracts showed a good protective effect on the intestinal epithelium at 1 µg/mL, with TEER values increasing by approximately 1.5 fold, compared to LPS-stimulated cells. C. longa showed an anti-inflammatory mechanism of action, reducing IL-8, TNF-α and IL-6 production by approximately 30%, 25% and 40%, respectively, compared to the inflammatory stimuli. B. serrata action was linked to its antioxidant effect, with ROS production being reduced by 25%, compared to H2O2-stimulated Caco-2 cells. C. longa and B. serrata resulted to be promising agents for the management of inflammatory bowel diseases by modulating in vitro parameters which have been identified in the clinical conditions.
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Affiliation(s)
- Paolo Governa
- Department of Physical Sciences, Hearth and Environment, University of Siena, Via Laterina 8, 53100 Siena, Italy.
- Department of Biotechnology, Chemistry and Pharmacy⁻Department of Excellence 2018⁻2022, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy.
| | - Maddalena Marchi
- Department of Physical Sciences, Hearth and Environment, University of Siena, Via Laterina 8, 53100 Siena, Italy.
| | - Veronica Cocetta
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Egidio Meneghetti 2, 35131 Padua, Italy.
| | - Bianca De Leo
- MRC Centres for Inflammation Research and Reproductive Health, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, UK.
| | - Philippa T K Saunders
- MRC Centre for Inflammation Research, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, UK.
| | - Daniela Catanzaro
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Egidio Meneghetti 2, 35131 Padua, Italy.
| | - Elisabetta Miraldi
- Department of Physical Sciences, Hearth and Environment, University of Siena, Via Laterina 8, 53100 Siena, Italy.
| | - Monica Montopoli
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Largo Egidio Meneghetti 2, 35131 Padua, Italy.
- Venetian Institute of Molecular Medicine, Via Orus 2, 35129 Padua, Italy.
| | - Marco Biagi
- Department of Physical Sciences, Hearth and Environment, University of Siena, Via Laterina 8, 53100 Siena, Italy.
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Raymond WW, Cruz AC, Caughey GH. Mast cell and neutrophil peptidases attack an inactivation segment in hepatocyte growth factor to generate NK4-like antagonists. J Biol Chem 2005; 281:1489-94. [PMID: 16303761 PMCID: PMC2271111 DOI: 10.1074/jbc.m511154200] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hepatocyte growth factor (HGF) is a plasminogen-like protein with an alpha chain linked to a trypsin-like beta chain without peptidase activity. The interaction of HGF with c-met, a receptor tyrosine kinase expressed by many cells, is important in cell growth, migration, and formation of endothelial and epithelial tubes. Stimulation of c-met requires two-chain, disulfide-linked HGF. Portions of an alpha chain containing an N-terminal segment and four kringle domains (NK4) antagonize HGF activity. Until now, no physiological pathway for generating NK4 was known. Here we show that chymases, which are chymotryptic peptidases secreted by mast cells, hydrolyze HGF, thereby abolishing scatter factor activity while generating an NK4-like antagonist of HGF scatter factor activity. Thus, chymase interferes with HGF directly by destroying active protein and indirectly by generating an antagonist. The site of hydrolysis, Leu480, lies in the alpha chain on the N-terminal side of the cysteine linking the alpha and beta chains. This site appears to be specific for HGF because chymase does not hydrolyze other plasminogen-like proteins, such as macrophage-stimulating protein and plasminogen itself. Mast cell/neutrophil cathepsin G and neutrophil elastase generate similar fragments of HGF by cleaving near the chymase site. Mast cell and neutrophil peptidases are secreted during tissue injury, infection, ischemia, and allergic inflammation, where they may oppose HGF effects on epithelial repair. Thus, HGF possesses an "inactivation segment" that serves as an Achilles' heel attacked by inflammatory proteases. This work reveals a potential physiological pathway for inactivation of HGF and generation of NK4-like antagonists.
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Affiliation(s)
- Wilfred W. Raymond
- Department of Medicine and Cardiovascular Research Institute, The University of California at San Francisco, San Francisco, California 94143
- The Veterans Affairs Medical Center, San Francisco, California 94121
| | - Anthony C. Cruz
- Department of Medicine and Cardiovascular Research Institute, The University of California at San Francisco, San Francisco, California 94143
- The Veterans Affairs Medical Center, San Francisco, California 94121
| | - George H. Caughey
- Department of Medicine and Cardiovascular Research Institute, The University of California at San Francisco, San Francisco, California 94143
- The Veterans Affairs Medical Center, San Francisco, California 94121
- To whom correspondence should be addressed: Veterans Affairs Medical Center 111-D, 4150 Clement St., San Francisco, CA 94121; Tel.: 415-221-4810 (ext. 2385); Fax: 415-387-3568; E-mail:
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Kim MS, Chae HJ, Shin TY, Kim HM, Kim HR. Estrogen regulates cytokine release in human mast cells. Immunopharmacol Immunotoxicol 2001; 23:495-504. [PMID: 11792009 DOI: 10.1081/iph-100108596] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Estrogens are important for bone homeostasis and are classified as anti-resorptive agents. In ovariectomized rats, mast cell changes occurred during the activation of resorption. In addition, quantitative changes occurred in mast cell population residing near the site undergoing resorption. Considering these studies, mast cells may play a role in osteoporosis. Therefore, it is of paramount importance to study mast cell cytokine production also in the presence or absence of estrogen. When cultured in the absence of estrogen, human mast cells treated with PMA or A23187 demonstrated significantly greater release of TNF-alpha and IL-6 than cells grown under estrogen-depleted condition. Our results show that treatment of mast cells with estrogen prevented PMA or A23187-stimulated TNF-alpha or IL-6 release. These data provide evidence for a potent inhibition of cytokines by estrogen in human mast cells. This study may help to explain the association between mast cells and osteoporosis.
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Affiliation(s)
- M S Kim
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang University, Iksan, Chonbuk, South Korea
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Fehlner-Gardiner CC, Cao H, Jackson-Boeters L, Nakamura T, Elliott BE, Uniyal S, Chan BM. Characterization of a functional relationship between hepatocyte growth factor and mouse bone marrow-derived mast cells. Differentiation 1999; 65:27-42. [PMID: 10448711 DOI: 10.1046/j.1432-0436.1999.6510027.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
During the early stage (at 4 weeks) of interleukin-3 (IL-3)-induced development, mouse bone marrow-derived mast cells (BMMC) express alpha 4, alpha 5 and alpha 6 integrins, whereas with further maturation beyond 10 weeks, only alpha 5 integrin remains stably expressed. Hepatocyte growth factor (HGF) modulates the growth and movement of diverse cell types upon binding to its receptor, encoded by the proto-oncogene c-met. We report here the expression of c-met by BMMC throughout the course of their development. In addition, HGF stimulated migration of early week-4 BMMC, but not of the later stage week-10 BMMC, on fibronectin and laminin substrates. The developmental stage-dependent effect of HGF on BMMC was due to specific stimulation of the migratory function of alpha 4 and alpha 6, but not alpha 5 integrins. In addition, HGF had no effect on BMMC growth, either alone or in combination with IL-3. While HGF is stimulatory of the migratory function of BMMC, our results show that BMMC in turn can modulate HGF function. Thus, upon activation via the IgE receptors, BMMC released proteases that abolished HGF activities. Analyses of the degradation products by two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis and Western blot using antisera prepared against recombinant HGF and the kringle 3 domain of HGF revealed specific degradation of HGF alpha but not beta/beta' subunits. Therefore, our results suggest that: 1) the motogenic effect of HGF on BMMC varies according to the stage of their development, 2) HGF stimulation of BMMC migration is due to selective activation of alpha 4 and alpha 6, but not alpha 5 integrin function, and 3) there exists a two-way relationship between BMMC and HGF such that HGF stimulates the beta 1 integrin-mediated migratory function of BMMC, which can, in turn, modulate HGF function by release of serine proteases.
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Affiliation(s)
- C C Fehlner-Gardiner
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada
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