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Transcripts induced by exposure to SLE serum in healthy blood monocytes

ABSTRACT: Monocytes from 3 healthy donors were cultured for 6 hours in the presence of 20% serum from three newly diagnosed, untreated SLE patients. Microarray analysis was then performed upon normalizing the gene expression levels of samples incubated with SLE sera to those incubated with autologous serum. Monocytes from 3 healthy donors were cultured for 6 hours in the presence of 20% serum from three newly diagnosed, untreated SLE patients. Microarray analysis was then performed upon normalizing the gene expression levels of samples incubated with SLE sera to those incubated with autologous serum.

ORGANISM(S): Homo sapiens

SUBMITTER: Nicole Baldwin

PROVIDER: E-GEOD-46920 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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IFN priming is necessary but not sufficient to turn on a migratory dendritic cell program in lupus monocytes.

Rodriguez-Pla Alicia A Patel Pinakeen P Maecker Holden T HT Rossello-Urgell Jose J Baldwin Nicole N Bennett Lynda L Cantrell Victoria V Baisch Jeanine J Punaro Marilynn M Gotte Alisa A Nassi Lorien L Wright Tracey T Palucka Anna Karolina AK Banchereau Jacques J Pascual Virginia V

Journal of immunology (Baltimore, Md. : 1950) 20140514 12

Blood monocytes from children with systemic lupus erythematosus (SLE) behave similar to dendritic cells (DCs), and SLE serum induces healthy monocytes to differentiate into DCs in a type I IFN-dependent manner. In this study, we found that these monocytes display significant transcriptional changes, including a prominent IFN signature, compared with healthy controls. Few of those changes, however, explain DC function. Exposure to allogeneic T cells in vitro reprograms SLE monocytes to acquire DC ...[more]

PMID: 24829414

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Transcripts induced by exposure to SLE serum in healthy blood monocytes

Project description:Monocytes from 3 healthy donors were cultured for 6 hours in the presence of 20% serum from three newly diagnosed, untreated SLE patients. Microarray analysis was then performed upon normalizing the gene expression levels of samples incubated with SLE sera to those incubated with autologous serum.

2014-06-03 | GSE46920 | GEO

SLE serum induced transcripts regulated by IFNa2b

Project description:To explore the full extent of IFN-regulated transcriptional changes, we exposed monocytes from two healthy donors to recombinant type I IFN (IFN-M-NM-12b) in vitro. RNA was extracted at 6 hrs and the expression data was normalized to that of monocytes cultured with medium. Blood monocytes isolated from healthy volunteers were incubated with 20% autologous serum alone or in the presence of 1000 U/ml of IFNM-NM-12b (Schering Plough, Kenilworth, NJ) in 6-well plates at a concentration of 106 monocytes per well in 3 ml of media. After incubation for six hours at 37 M-bM-^AM-0C, cells were harvested and RNA was extracted.

2014-06-03 | E-GEOD-46921 | biostudies-arrayexpress

Transcripts induced by recombinant IFNa in healthy blood monocytes at different time points

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2014-06-03 | E-GEOD-46911 | biostudies-arrayexpress

Differentially expressed transcripts in SLE blood monocytes

Project description:To better characterize the molecules that could potentially confer antigen presenting capacity to SLE monocytes, we assessed their gene expression profile. Blood monocytes from five healthy controls and five pediatric SLE patients were isolated using CD14+ selection. Because drugs used to treat SLE could induce considerable transcriptional changes, we selected active, newly diagnosed patients who had never received oral or intravenous (IV) medications.

2014-06-03 | E-GEOD-46907 | biostudies-arrayexpress

Systemic lupus erythematosus

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2014-06-03 | E-GEOD-46923 | biostudies-arrayexpress

Differentially expressed transcripts in SLE blood monocytes according to their capacity to induce mixed lymphocytic reaction

Project description:We screened SLE monocytes from 19 SLE patients and selected 4 that induced CD4+ T cell proliferation in vitro and 4 that did not. CFSE labeled CD4-T cells (105) were incubated with SLE monocytes (2 x 104). Cells were harvested at 6 hours for RNA extraction. We screened SLE monocytes from 19 SLE patients and selected 4 that induced CD4+ T cell proliferation in vitro and 4 that did not. CFSE labeled CD4-T cells (105) were incubated with SLE monocytes (2 x 104). Cells were harvested at 6 hours for RNA extraction.

2014-06-03 | E-GEOD-46917 | biostudies-arrayexpress

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Transcriptional profiles of pediatric SLE neutrophils and Healthy neutrophils cultured with SLE sera or Interferon

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2011-03-10 | E-GEOD-27427 | biostudies-arrayexpress

Transcripts differentially expressed in healthy blood mDCs compared to healthy monocytes

Project description:To directly compare the SLE monocyte transcriptional program with that of blood mDC precursors, we purified lineage HLA-DRhighCD11chigh mDCs and CD14+ monocytes from the blood of five healthy donors. Their gene expression profiles were then compared to those of blood SLE monocytes. An unsupervised clustering analysis of transcripts present in >20% of the samples classified healthy monocytes, SLE monocytes and healthy mDCs into three well defined groups. A supervised analysis was then performed to find genes: 1) differentially expressed in healthy mDCs compared to monocytes; 2) shared by healthy blood mDCs and SLE blood monocytes. To directly compare the SLE monocyte transcriptional program with that of blood mDC precursors, we purified lineage HLA-DRhighCD11chigh mDCs and CD14+ monocytes from the blood of five healthy donors. Their gene expression profiles were then compared to those of blood SLE monocytes. An unsupervised clustering analysis of transcripts present in >20% of the samples classified healthy monocytes, SLE monocytes and healthy mDCs into three well defined groups. A supervised analysis was then performed to find genes: 1) differentially expressed in healthy mDCs compared to monocytes; 2) shared by healthy blood mDCs and SLE blood monocytes.

2014-06-03 | E-GEOD-46913 | biostudies-arrayexpress

Autoimmune antigen and serum factor antigen reactivity in a cohort of patients with systemic lupus erythematosus (SLE) and healthy controls from the ABCoN cohort.

Project description:The aim of the study was to test the hypothesis that SLE patient sera contains IgG reactivity to serum factor antigens concomitant with prototypical autoimmne antigens. We diluted patient sera 1:250 and incubated dilutions on a nitrocellulose-platform array printed with whole protein antigens. In this study, serum from 45 individuals (subsetted into high and low interferon signature as well as healthy control categories) was profiled for IgG autoantibody reactivity to whole protein autoimmune and serum factor antigens. SLE and specifically IFN high patient sera was found using the significance analysis of microarrays (SAM) algorithm to be significantly more reactive with prototypical autoimmune antigens and select serum factor array antigens.

2013-09-24 | E-GEOD-51100 | biostudies-arrayexpress

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