Abstract
Small GTPase RhoB has been well documented in regulating cell adhesion, motility, proliferation, and survival, but to date, there is little information about the relationship between RhoB and inflammation. In this study, the mRNA and protein levels of RhoB were induced by lipopolysaccharide (LPS) in RAW264.7 cells determined by real-time PCR and Western blot. The upregulation of RhoB by LPS was also observed in mouse peritoneal macrophages and in mouse lung, liver, and kidney. RhoB overexpression by transfecting with wild RhoB plasmid increased the secretion of tumor necrosis factor alpha (TNF-α) and nitric oxide (NO) in RAW264.7 cells, while RhoB knockdown by RNA interference decreased the secretion of TNF-α and NO in RAW264.7 cells. TNF-α and NO synthase are the target genes of nuclear factor-kappaB (NF-κB), and overexpression of RhoB increased, whereas inhibition of RhoB decreased the basal and LPS-activated transcriptional activity of NF-κB in the cells. These results demonstrated that LPS induced RhoB expression in mouse in vivo and in vitro and in RAW264.7 cells, and the role of RhoB on LPS-induced secretion of TNF-α and NO was at least partly mediated via NF-κB. These results indicated that RhoB was involved in LPS-induced inflammation in mouse in vivo and in vitro.
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Abbreviations
- LPS:
-
Lipopolysaccharide
- RhoB-wt:
-
Wild-type RhoB cDNA
- RhoB-RNAi:
-
RNA interference plasmid target RhoB
- NO:
-
Nitric oxide
- TNF-α:
-
Tumor necrosis factor alpha
References
Adnane J, Muro-Cacho C, Mathews L, Sebti SM, Munoz-Antonia T (2002) Suppression of rhoB expression in invasive carcinoma from head and neck cancer patients. Clin Cancer Res 8:2225–2232
Beutler B, Kruys V (1995) Lipopolysaccharide signal transduction, regulation of tumor necrosis factor biosynthesis, and signaling by tumor necrosis factor itself. J Cardiovasc Pharmacol 25(Suppl 2):S1–S8
Boettner B, Van Aelst L (2002) The role of Rho GTPases in disease development. Gene 286:155–174
Busillo JM, Azzam KM, Cidlowski JA (2011) Glucocorticoids sensitize the innate immune system through regulation of the NLRP3 inflammasome. J Biol Chem 286:38703–38713
Chen YX, Li ZB, Diao F, Cao DM, Fu CC, Lu J (2006) Up-regulation of RhoB by glucocorticoids and its effects on the cell proliferation and NF-kappaB transcriptional activity. J Steroid Biochem Mol Biol 101:179–187
Delarue FL, Taylor BS, Sebti SM (2001) Ras and RhoA suppress whereas RhoB enhances cytokine-induced transcription of nitric oxide synthase-2 in human normal liver AKN-1 cells and lung cancer A-549 cells. Oncogene 20:6531–6537
Fritz G, Kaina B (2001) Ras-related GTPase Rhob represses NF-kappaB signaling. J Biol Chem 276:3115–3122
Fritz G, Kaina B (2006) Rho GTPases: promising cellular targets for novel anticancer drugs. Curr Cancer Drug Targets 6:1–14
Fritz G, Kaina B, Aktories K (1995) The ras-related small GTP-binding protein RhoB is immediate-early inducible by DNA damaging treatments. J Biol Chem 270:25172–25177
Hayden MS, Ghosh S (2004) Signaling to NF-kappaB. Genes Dev 18:2195–2224
Homma T, Kato A, Hashimoto N, Batchelor J, Yoshikawa M, Imai S, Wakiguchi H, Saito H, Matsumoto K (2004) Corticosteroid and cytokines synergistically enhance toll-like receptor 2 expression in respiratory epithelial cells. Am J Respir Cell Mol Biol 31:463–469
Huang M, Prendergast GC (2006) RhoB in cancer suppression. Histol Histopathol 21:213–218
Jahner D, Hunter T (1991) The ras-related gene rhoB is an immediate-early gene inducible by v-Fps, epidermal growth factor, and platelet-derived growth factor in rat fibroblasts. Mol Cell Biol 11:3682–3690
Karima R, Matsumoto S, Higashi H, Matsushima K (1999) The molecular pathogenesis of endotoxic shock and organ failure. Mol Med Today 5:123–132
Khanduja KL, Kaushik G, Khanduja S, Pathak CM, Laldinpuii J, Behera D (2011) Corticosteroids affect nitric oxide generation, total free radicals production, and nitric oxide synthase activity in monocytes of asthmatic patients. Mol Cell Biochem 346:31–37
Kim YH, Kim DH, Lim H, Baek DY, Shin HK, Kim JK (2009) The anti-inflammatory effects of methylsulfonylmethane on lipopolysaccharide-induced inflammatory responses in murine macrophages. Biol Pharm Bull 32:651–656
Lee HJ, Dang HT, Kang GJ, Yang EJ, Park SS, Yoon WJ, Jung JH, Kang HK, Yoo ES (2009) Two enone fatty acids isolated from Gracilaria verrucosa suppress the production of inflammatory mediators by down-regulating NF-kappaB and STAT1 activity in lipopolysaccharide-stimulated RAW 264.7 cells. Arch Pharm Res 32:453–462
Li YD, Liu YP, Cao DM, Yan YM, Hou YN, Zhao JY, Yang R, Xia ZF, Lu J (2011) Induction of small G protein RhoB by non-genotoxic stress inhibits apoptosis and activates NF-κB. J Cell Physiol 226:729–738
Li Q, Verma IM (2002) NF-kappaB regulation in the immune system. Nat Rev Immunol 2:725–734
Lindros KO, Jarvelainen HA (2005) Chronic systemic endotoxin exposure: an animal model in experimental hepatic encephalopathy. Metab Brain Dis 20:393–398
Mazieres J, Antonia T, Daste G, Muro-Cacho C, Berchery D, Tillement V, Pradines A, Sebti S, Favre G (2004) Loss of RhoB expression in human lung cancer progression. Clin Cancer Res 10:2742–2750
Neumann E, Ramos MG, Santos LM, Rodrigues AC, Vieira EC, Afonso LC, Nicoli JR, Vieira LQ (2009) Lactobacillus delbrueckii UFV-H2b20 induces type 1 cytokine production by mouse cells in vitro and in vivo. Braz J Med Biol Res 42:358–367
Ogino H, Fujii M, Ono M, Maezawa K, Hori S, Kizu J (2009) In vivo and in vitro effects of fluoroquinolones on lipopolysaccharide-induced pro-inflammatory cytokine production. J Infect Chemother 15:168–173
Pollara G, Handley ME, Kwan A, Chain BM, Katz DR (2006) Autocrine type I interferon amplifies dendritic cell responses to lipopolysaccharide via the nuclear factor-kappaB/p38 pathways. Scand J Immunol 63:151–154
Reuter S, Gupta SC, Chaturvedi MM, Aggarwal BB (2010) Oxidative stress, inflammation, and cancer: how are they linked? Free Radic Biol Med 49:1603–1616
Riedel CU, Foata F, Philippe D, Adolfsson O, Eikmanns BJ, Blum S (2006) Anti-inflammatory effects of bifidobacteria by inhibition of LPS-induced NF-kappaB activation. World J Gastroenterol 12:3729–3735
Rodriguez PL, Sahay S, Olabisi OO, Whitehead IP (2007) ROCK I-mediated activation of NF-kappaB by RhoB. Cell Signal 19:2361–2369
Sorrells SF, Sapolsky RM (2007) An inflammatory review of glucocorticoid actions in the CNS. Brain Behav Immun 21:259–272
Stamatakis K, Cernuda-Morollon E, Hernandez-Perera O, Perez-Sala D (2002) Isoprenylation of RhoB is necessary for its degradation. A novel determinant in the complex regulation of RhoB expression by the mevalonate pathway. J Biol Chem 277:49389–49396
Stuehr DJ (1997) Structure-function aspects in the nitric oxide synthases. Annu Rev Pharmacol Toxicol 37:339–359
Vanden Berghe W, De Bosscher K, Vermeulen L, De Wilde G, Haegeman G (2002) Induction and repression of NF-kappa B-driven inflammatory genes. Ernst Schering Res Found Workshop 40:233–278
Vanden Berghe W, Vermeulen L, Delerive P, De Bosscher K, Staels B, Haegeman G (2003) A paradigm for gene regulation: inflammation, NF-kappaB and PPAR. Adv Exp Med Biol 544:181–196
Wang X, Chen Y, Wang Y, Zhu XY, Ma Y, Zhang S, Lu J (2009) Role of RHOB in the antiproliferative effect of glucocorticoid receptor on macrophage RAW264.7 cells. J Endocrinol 200:35–43
Yeager MP, Pioli PA, Guyre PM (2011) Cortisol exerts bi-phasic regulation of inflammation in humans. Dose Response 9:332–347
Acknowledgments
This work was supported by grants from the National Natural Science Foundation of China (no. 30300128) and supported by Shanghai Key Lab of Human Performance(Shanghai University of sport; no. 11DZ2261100). We would like to thank Dr. G.C. Prendergast for generously providing the mammalian expression vectors encoding wild-type RhoB cDNA (pcDNA3-RhoB).
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Wang, X.H., Wang, Y., Diao, F. et al. RhoB is involved in lipopolysaccharide-induced inflammation in mouse in vivo and in vitro. J Physiol Biochem 69, 189–197 (2013). https://doi.org/10.1007/s13105-012-0201-z
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DOI: https://doi.org/10.1007/s13105-012-0201-z