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Expression and regulation of the CXC-chemokines, GRO/KC and IP-10/mob-1 in rat seminiferous tubules.
Links Expression and regulation of the CXC-chemokines, GRO/KC and IP-10/mob-1 in rat seminiferous tubules. Aubry F, Habasque C, Satie AP, Jegou B, Samson MEur Cytokine Netw. 2000 Dec;11(4):690-8. Links Expression and regulation of the CXC-chemokines, GRO/KC and IP-10/mob-1 in rat seminiferous tubules. Aubry F, Habasque C, Satie AP, Jegou B, Samson M. GERM-INSERM U. 435, Universite de Rennes I, Campus de Beaulieu, 35042 Rennes Cedex, Bretagne, France. Testicular inflammation is classically observed in the pathogenesis of viral and bacterial infection or tumoral invasion. In these situations, leukocyte infiltration is generally encountered. GRO/KC (growth-related oncogene) and IP-10/mob-1 (IFN-gamma-inducible protein) are two CXC-chemokines which attract neutrophils and activated T lymphocytes, respectively, have been studied for their ability to participate to testicular inflammation (orchitis). In the present work, using Northern blot and immunocytochemistry, we aimed to investigate whether GRO/KC and IP-10/mob-1 are produced within the seminiferous tubules of the testis and if these chemokines are induced by a number of pro-inflammatory cytokines and lipopolysaccharides (LPS). Our results show that GRO/KC and IP-10/mob-1 mRNAs were never found in germ cells, whether they were stimulated or not. In contrast, GRO/KC mRNA was expressed by isolated peritubular cells when stimulated by interleukin-1 alpha and beta (IL-1 alpha and IL-1 beta) or LPS and to a lesser extent by tumor necrosis factor-alpha (TNF-alpha) and by Sertoli cells when the latter were stimulated by rIL-alpha and rIL-1 beta and to a lesser extent by TNF-alpha and LPS. Moreover, IP10/mob-1 transcripts were strongly induced in peritubular cells by interferon-alpha (IFN-alpha) and IFN-gamma, whereas, in isolated Sertoli cells, INF-alpha and TNF-alpha were the only potent inducers. The kinetics of GRO/KC and IP-10/mob-1 mRNA expression by peritubular and Sertoli cells (significant stimulation as early as 1 hour and 4 hours post-exposure to the stimuli, respectively) are compatible with the hypothesis of a rapid mobilisation of these cells in an inflammatory process. Moreover, the dose-dependent effects of pro-inflammatory cytokines to induce a chemokine response were compatible with a high sensitivity of peritubular and Sertoli cells in orchitis. In conclusion, this present study shows that 2 CXC-chemokines, GRO/KC and IP10/mob-1, are produced by testicular somatic cells of seminiferous tubules, strongly indicating a likely role of these chemokines in the accumulation of neutrophils and T lymphocytes during orchitis of various origins. PMID: 11125315 [PubMed - indexed for MEDLINE] Related Links TNF-alpha is a potent inducer for IFN-inducible protein-10 in hepatocytes and unaffected by GM-CSF in vivo, in contrast to IL-1beta and IFN-gamma. [Cytokine. 2000] PMID: 10880246 Expression and regulation of the CC-chemokine monocyte chemoattractant protein-1 in rat testicular cells in primary culture. [Biol Reprod. 2000] PMID: 10775197 Th2- and to a lesser extent Th1-type cytokines upregulate the production of both CXC (IL-8 and gro-alpha) and CC (RANTES, eotaxin, eotaxin-2, MCP-3 and MCP-4) chemokines in human airway epithelial cells. [Int Arch Allergy Immunol. 2003] PMID: 12915769 Gene expression and production of the monokine induced by IFN-gamma (MIG), IFN-inducible T cell alpha chemoattractant (I-TAC), and IFN-gamma-inducible protein-10 (IP-10) chemokines by human neutrophils. [J Immunol. 1999] PMID: 10202039 In vitro regulation of an inducible-type NO synthase in the rat seminiferous tubule cells. [Biol Reprod. 1998] PMID: 9475399 See all Related Articles... Display Summary Brief Abstract AbstractPlus Citation MEDLINE XML UI List LinkOut ASN.1 Related Articles Cited Articles Cited in Books CancerChrom Links Domain Links 3D Domain Links GEO DataSet Links Gene Links Gene (GeneRIF) Links Genome Links Project Links GENSAT Links GEO Profile Links HomoloGene Links Nucleotide Links Nucleotide (RefSeq) Links OMIA Links OMIM (calculated) Links OMIM (cited) Links BioAssay Links Compound Links Compound via MeSH Substance Links Substance via MeSH PMC Links Cited in PMC PopSet Links Probe Links Protein Links Protein (RefSeq) Links SNP Links Structure Links Taxonomy via GenBank UniGene Links UniSTS Links Show 5 10 20 50 100 200 500 Sort by Pub Date First Author Last Author Journal Send to Text File Printer Clipboard E-mail Order .
GERM-INSERM U. 435, Universite de Rennes I, Campus de Beaulieu, 35042 Rennes Cedex, Bretagne, France.
Testicular inflammation is classically observed in the pathogenesis of viral and bacterial infection or tumoral invasion. In these situations, leukocyte infiltration is generally encountered. GRO/KC (growth-related oncogene) and IP-10/mob-1 (IFN-gamma-inducible protein) are two CXC-chemokines which attract neutrophils and activated T lymphocytes, respectively, have been studied for their ability to participate to testicular inflammation (orchitis). In the present work, using Northern blot and immunocytochemistry, we aimed to investigate whether GRO/KC and IP-10/mob-1 are produced within the seminiferous tubules of the testis and if these chemokines are induced by a number of pro-inflammatory cytokines and lipopolysaccharides (LPS). Our results show that GRO/KC and IP-10/mob-1 mRNAs were never found in germ cells, whether they were stimulated or not. In contrast, GRO/KC mRNA was expressed by isolated peritubular cells when stimulated by interleukin-1 alpha and beta (IL-1 alpha and IL-1 beta) or LPS and to a lesser extent by tumor necrosis factor-alpha (TNF-alpha) and by Sertoli cells when the latter were stimulated by rIL-alpha and rIL-1 beta and to a lesser extent by TNF-alpha and LPS. Moreover, IP10/mob-1 transcripts were strongly induced in peritubular cells by interferon-alpha (IFN-alpha) and IFN-gamma, whereas, in isolated Sertoli cells, INF-alpha and TNF-alpha were the only potent inducers. The kinetics of GRO/KC and IP-10/mob-1 mRNA expression by peritubular and Sertoli cells (significant stimulation as early as 1 hour and 4 hours post-exposure to the stimuli, respectively) are compatible with the hypothesis of a rapid mobilisation of these cells in an inflammatory process. Moreover, the dose-dependent effects of pro-inflammatory cytokines to induce a chemokine response were compatible with a high sensitivity of peritubular and Sertoli cells in orchitis. In conclusion, this present study shows that 2 CXC-chemokines, GRO/KC and IP10/mob-1, are produced by testicular somatic cells of seminiferous tubules, strongly indicating a likely role of these chemokines in the accumulation of neutrophils and T lymphocytes during orchitis of various origins.
This abstract is being posted for educational purposes, as well as for comment and criticism, by the visitors to the Epididymitis Foundation website (EpididymitisFoundation.org). This abstract is representative of a larger article that is indexed on Medline.
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