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Szodoray P, Alex P, Chappell-Woodward CM, Madland TM, Knowlton N, Dozmorov I, Zeher M, Jarvis JN, Nakken B, Brun JG, Centola M. Circulating cytokines in Norwegian patients with psoriatic arthritis determined by a multiplex cytokine array system. Rheumatology (Oxford) 2007; 46:417-25. [PMID: 16936328 DOI: 10.1093/rheumatology/kel306] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Serum cytokines play an important role in the pathogenesis of psoriatic arthritis (PsA) by initiating and perpetuating various cellular and humoral autoimmune processes. The aim of this study was to describe a broad spectrum of T- and B-cell cytokines, growth factors and chemokines in patients with PsA and healthy individuals. METHODS A novel protein array system, denoted as multiplex cytokine assay was utilized to measure simultaneously the levels of 23 circulating cytokines of patients with PsA and healthy individuals. Additionally, correlational clustering and discriminant function analysis (DFA), two multivariate, supervised analysis methods were employed to identify a subset of biomarkers in order to describe potential functional inter-relationships among these pathological cytokines and identify biomarkers with prognostic and diagnostic utility. RESULTS Univariate analysis demonstrated that serum levels of a complex set of immune and inflammatory modulating cytokines are significantly up-regulated in patients with PsA relative to unaffected controls including interleukin (IL)-10, IL-13, interferen (IFN)-alpha, epidermal growth factor (EGF), vascular endothelial growth factor (VEGF), fibroblast growth factor [CCL3 macrophage inflammatory protein (MIP)-1alpha], CCL4 (MIP-1beta) and CCL11 (Eotaxin), while granulocyte-colony stimulating factor was significantly reduced in PsA patients. Correlational clustering was able to discriminate among, and hence subclassify, patients with varying levels of disease activity, which may prove useful in guiding therapy in these apparently phenotypically distinct disease subsets. DFA identified EGF, IFN-alpha, VEGF, CCL3 (MIP-1alpha) and IL-12p40 as analytes with the strongest discriminatory power among various PsA patients and controls. CONCLUSIONS Our findings suggest that these factors modulate PsA pathology and the articular involvement in a synergistic manner. Identifying factors could be used in the development of clinical diagnostic tests, which are valuable to guide evidence-based diagnosis and disease management of PsA.
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Affiliation(s)
- P Szodoray
- Broegelmann Research Laboratory, The Gade Institute, University of Bergen, Bergen, Norway.
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Aggarwal A, Dozmorov I, Frank MB, Jiang K, Chen Y, Centola M, Jarvis J. P41 Neutrophils from children with polyarticular and pauciarticular JRA show distinct gene expression profiles. Indian Journal of Rheumatology 2006. [DOI: 10.1016/s0973-3698(10)60270-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Szodoray P, Alex P, Frank MB, Turner M, Turner S, Knowlton N, Cadwell C, Dozmorov I, Tang Y, Wilson PC, Jonsson R, Centola M. A genome-scale assessment of peripheral blood B-cell molecular homeostasis in patients with rheumatoid arthritis. Rheumatology (Oxford) 2006; 45:1466-76. [PMID: 16638801 DOI: 10.1093/rheumatology/kel095] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE While rheumatoid arthritis (RA) is considered a prototypical autoimmune disease, the specific roles of B-cells in RA pathogenesis is not fully delineated. METHODS We performed microarray expression profiling of peripheral blood B-cells from RA patients and controls. Data were analysed using differential gene expression analysis and 'gene networking' analysis (characterizing clusters of functionally inter-relelated genes) to identify both regulatory genes and the pathways in which they participate. Results were confirmed by quantitative real-time polymerase chain reaction and by measuring the levels of 10 serum cytokines involved in the pathways identified. RESULTS Genes regulating and effecting the cell-cycle, proliferation, apoptosis, autoimmunity, cytokine networks, angiogenesis and neuro-immune regulation were differentially expressed in RA B-cells. Moreover, the serum levels of several soluble factors that modulate these pathways, including IL-1beta, IL-5, IL-6, IL-10, IL-12p40, IL-17 and VEGF were significantly increased in this cohort of RA patients. CONCLUSIONS These results outline aspects of the multifaceted role B-cells play in RA pathogenesis in which immune dysregulation in RA modulates B-cell biology and thereby contributes to the induction and perpetuation of a pathogenic humoral immune response.
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Affiliation(s)
- P Szodoray
- Broegelmann Research Laboratory, The Gade Institute, University of Bergen, Armauer Hansen Bldg, N-5021 Bergen, Norway.
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Kurella S, Yaciuk JC, Dozmorov I, Frank MB, Centola M, Farris AD. Transcriptional modulation of TCR, Notch and Wnt signaling pathways in SEB-anergized CD4+ T cells. Genes Immun 2005; 6:596-608. [PMID: 16034473 PMCID: PMC2593626 DOI: 10.1038/sj.gene.6364245] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Gene expression changes in CD4 + Vbeta8+ T cells energized by in vivo exposure to staphylococcal enterotoxin B (SEB) bacterial superantigen compared to CD4 + Vbeta8+ non-energic T cells were assessed using DNA microarrays containing 5184 murine complementary DNAs. Anergy in splenic T cells of SEB-immunized BALB/c mice was verified by dramatically reduced proliferative capacity and an 8 x overexpression of GRAIL mRNA in CD4 + Vbeta8+ T cells taken from mice 7 days after injection. At an Associative t-test threshold of P<0.0005, 96 genes were overexpressed or detected only in anergic T cells, while 256 genes were suppressed or not detected in anergic T cells. Six of eight differential expressions tested using real-time quantitative PCR were validated. Message for B-Raf was detected only in non-anergic cells, while expression of the TCR signaling modulator Slap (Src-like adapter protein) and the TCR zeta-chain specific phosphatase Ptpn3 was enhanced. Modulation of multiple genes suggests downregulation of Wnt/beta-catenin signaling and enhanced Notch signaling in the anergic cells. Consistent with previous reports in a non-superantigen in vivo anergy model, mRNA for CD18 and the transcription factor Satb1 (special AT-rich-binding protein 1) was increased in SEB-energized T cells. This is the first report of global transcriptional changes in CD4+ T cells made anergic by superantigen exposure.
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Affiliation(s)
- S Kurella
- Arthritis and Immunology Program, Oklahoma Medical Research Foundation, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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Zimmerman RA, Dozmorov I, Nunlist EH, Tang Y, Li X, Cowan R, Centola M, Frank MB, Culkin DJ, Lin HK. 5alpha-Androstane-3alpha,17beta-diol activates pathway that resembles the epidermal growth factor responsive pathways in stimulating human prostate cancer LNCaP cell proliferation. Prostate Cancer Prostatic Dis 2005; 7:364-74. [PMID: 15452555 DOI: 10.1038/sj.pcan.4500761] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
5alpha-Androstane-3alpha,17beta-diol (3alpha-diol) is considered to have no androgenic effects in androgen target organs unless it is oxidized to 5alpha-dihydrotestosterone (5alpha-DHT). We used microarray and bioinformatics to identify and compare 3alpha-diol and 5alpha-DHT responsive gene in human prostate LNCaP cells. Through a procedure called 'hypervariable determination', a similar set of 30 responsive genes involving signal transduction, transcription regulation, and cell proliferation were selected in 5alpha-DHT-, 3alpha-diol-, and epidermal growth factor (EGF)-treated samples. F-means cluster and networking procedures showed that the responsive pattern of these genes was more closely related between 3alpha-diol and EGF than between 5alpha-DHT and 3alpha-diol treatments. We conclude that 3alpha-diol is capable of stimulating prostate cell proliferation by eliciting EGF-like pathway in conjunction with androgen receptor pathway.
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Affiliation(s)
- R A Zimmerman
- Department of Urology, University of Oklahoma Health Sciences Center, 920 Stanton L Young Blvd, Oklahoma City, OK 73104, USA
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Shu C, Guo L, Bruner G, Gilkeson G, Kamen D, Tang YH, Dozmorov I, Kelly J, Ning J, Williams D, Pongratz C, James J, Guthridge JM, Harley JB. 358 DIFFERENTIAL GENE EXPRESSION IN B CELLS FROM GULLAH LUPUS PATIENTS AND CONTROLS. J Investig Med 2005. [DOI: 10.2310/6650.2005.00006.357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Guo L, Dominguez N, Dozmorov I, Tang YH, Namjou B, Kelly J, Hutchings D, Bruner G, Klein W, James J, Kaufman K, Scofield H, Guthridge JM, Harley JB. 35 GENE EXPRESSION ANALYSIS OF EUROPEAN-AMERICAN LUPUS PATIENTS WITH THYROID DISEASE COMPARED TO MATCHED CONTROLS. J Investig Med 2005. [DOI: 10.2310/6650.2005.00006.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lawrence SM, Tang Y, Dozmorov I, Frank MB, Centola M, Jarvis JN. 228 GENE EXPRESSION ARRAYS REVEAL DISTINCT PATTERNS OF ACTIVATION THAT DIFFER BETWEEN ADULT AND NEONATAL MONOCYTES. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Portugal K, Dozmorov I, Sidorov I, Marrero I, Fonseca JA, Spadafora-Ferreira M, Kalil J, Coelho V. Renal transplant patients show variations in their self-reactive repertoires: a serial study. Int Immunol 2001; 13:747-55. [PMID: 11369701 DOI: 10.1093/intimm/13.6.747] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We addressed the question of whether allo-transplantation (Tx) induces breakdown of tolerance to self-antigens or alteration of the autoreactive T cell repertoire in humans. The serial variation of T cell autoreactivity was studied in the peripheral blood of 12 renal transplant patients, by autologous limiting dilution assay and autologous mixed lymphocyte reaction. Ten of 12 patients presented a positive response in autologous peripheral blood mononuclear cells in the post-Tx period, in contrast to four of 12 patients before Tx (P = 0.038). Multi-hit kinetics was found in 57% of the assays analyzed, indicating frequent regulatory control of the autologous response. Quantitative analysis performed in eight patients showed an increase in precursor frequency at >1 year post-Tx in five patients. These data indicate that autoreactivity increases or develops following Tx, in humans. Post-Tx events such as alloreactivity, infections or immunosuppression could interfere with the balance of autoreactive and regulatory cells, leading to changes in the T cell repertoires to self-antigens and eventually breakdown of self-tolerance. Further investigation is needed to elucidate whether post-Tx autoreactivity contributes to rejection, plays a regulatory role over alloreactivity or both, at separate times.
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Affiliation(s)
- K Portugal
- Heart Institute (InCor) and Division of Renal Transplantation, Hospital of Clinics, University of São Paulo Medical School, Av. Dr Enéas de Carvalho Aguiar 500, 3, São Paulo 05403-000, Brazil
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Dozmorov I, Bartke A, Miller RA. Array-based expression analysis of mouse liver genes: effect of age and of the longevity mutant Prop1df. J Gerontol A Biol Sci Med Sci 2001; 56:B72-80. [PMID: 11213270 DOI: 10.1093/gerona/56.2.b72] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ames dwarf mice, homozygous for the df allele at the Prop1 locus, live 40% to 70% longer than nonmutant siblings and represent the first single-gene mutant that extends life span in a mammal. To gain insight into the basis for the longevity of the Ames dwarf mouse, we measured liver mRNA levels for 265 genes in a group of 11 df/df mice, (three to four mice per age group), at ages 5, 13, and 22 months, and in 13 age- and sex-matched control mice. The analysis showed seven genes where the effects of age reach p < .01 in normal mice and six others with possible age effects in dwarf mice, but none of these met Bonferroni-adjusted significance thresholds. Thirteen genes showed possible effects of the df/df genotype at p < .01. One of these, insulin-like growth factor 1 (IGF-1), was statistically significant even after adjustment for multiple comparisons; and genes for two IGF-binding proteins, a cyclin, a heat shock protein, p38 mitogen-activated protein kinase, and an inducible cytochrome P450 were among those implicated by the survey. In young control mice, half of the expressed genes showed SDs that were more than 58% of the mean, and a simulation study showed that genes with this degree of interanimal variation would often produce false-positive findings when conclusions were based on ratio calculations alone (i.e., without formal significance testing). Many genes in our data set showed apparent young-to-old or normal-to-dwarf ratios above 2, but the large majority of these proved to be genes where high interanimal variation could create high ratios by chance alone, and only a few of the genes with large ratios achieved p < .05. The proportion of genes showing relatively large changes between 5 and 13 months, or from 13 to 22 months of age, was not diminished by the df/df genotype, providing no support for the idea that the dwarf mutation leads to global delay or deceleration of the pace of age-dependent changes in gene expression. These survey data provide the foundation for replication studies that should provide convincing proof for age- and genotype-specific effects on gene expression and thus reveal key similarities among the growing number of mouse models of decelerated aging.
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Affiliation(s)
- I Dozmorov
- Department of Pathology, Institute of Gerontology, and Geriatrics Center, University of Michigan, Ann Arbor 48109-0940, USA
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Affiliation(s)
- I Dozmorov
- Dept of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
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Abstract
We describe here a culture system for studying the development, in vitro, of antigen-specific CD4 T cells from unprimed mice. T cells from young mice are initially exposed to antigen, such as pigeon cytochrome C or keyhole limpet hemocyanin, in the presence of adherent accessory cells and then allowed to proliferate in the absence of antigen but in the presence of IL-2, 10(-8) M dexamethasone, and antibodies to IL-10. Proliferation and IL-2 production by T cells harvested from such expansion cultures are antigen-dependent but not antigen-specific and at different doses can be either stimulated or inhibited both by the priming antigen and by irrelevant proteins. Antigen-specific T cell reactions can be elicited by any of three modifications of the culture protocol: (a) absorption of nonspecific cells on accessory cell monolayers bearing irrelevant proteins; (b) increased doses of dexamethasone during the expansion phase; or (c) a second cycle of antigen activation and antigen-free expansion. These observations provide a foundation for further analysis of in vitro maturation of primary immune responses and suggest an important role for IL-10 and glucocorticoids in regulating the early stages of activation and proliferation by naive T cells.
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Affiliation(s)
- I Dozmorov
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, USA
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Pirozhkov A, Dozmorov I, Petrov R. Joint influence of natural killers (NK) and hemopoietic stroma on rejection of parent stem cells. Bone Marrow Transplant 1995; 16:683-93. [PMID: 8547866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The growth of hemopoietic stem cells of C57BL/6 mice was explored in syngeneic and semi-syngeneic foci of heterotopic hemopoiesis, formed under the kidney capsule of (CBA x C57BL/6)F1 recipients with and without prior treatment with cyclophosphamide or fractionated irradiation, which is known to abrogate hybrid resistance and NK cell activity. Our results show that the suppression of the growth of parent stem cells in semi-syngeneic F1-recipients is due to NK cell participation. However, no inhibition was found in the growth of identical cells in the foci of syngeneic hemopoietic stroma in the same recipients, despite the presence of NK cell activity. The experimental model used shows clearly that hybrid resistance is the result of the joint involvement of NK cells and the semi-syngeneic stroma.
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Affiliation(s)
- A Pirozhkov
- Department of Immunology, Schemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
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Abstract
Limiting dilution analysis (LDA) of allogeneic and syngeneic murine mixed lymphocyte reactions was used to study the heterogeneity both of the responding spleen cells and of the stimulating antigen-presenting dendritic cells (DC). In contrast with traditional LDA of single-hit processes, a non-linear dependence of the proportion of negative microcultures on responding spleen cell concentration was obtained. The non-linearity of this LDA plot was interpreted as being the result of a competitive interaction between two types of limiting precursor cells. The regulatory and stimulatory functions of DC were investigated in the same LDA systems by testing various levels of DC from spleen or thymus as limiting cells in the presence of a constant quantity of syngeneic splenic responder T cells. This revealed a functional heterogeneity amongst DC, which were found to suppress proliferation of responder cells at low DC levels but to stimulate proliferation at higher levels. At levels where splenic DC became stimulatory, thymic DC remained suppressive.
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Affiliation(s)
- I Dozmorov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia
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