Differential expression of microRNAs in monocytes and derived macrophages in culture.
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE107160 | GEO | 2017/11/21
SECONDARY ACCESSION(S): PRJNA419204
REPOSITORIES: GEO
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2017-09-11 | GSE103394 | GEO
Project description:Mechanisms that may allow circulating monocytes to persist as CD4 T cells diminish in HIV-1 infection have not been investigated. We have characterized steady-state gene expression signatures in circulating monocytes from HIV-infected subjects and have identified a stable anti-apoptosis gene signature comprised of 38 genes associated with p53, CD40L, TNF and MAPKinase signaling networks. The significance of this gene signature is indicated by our demonstration of cadmium chloride- or Fas ligand-induced apoptosis resistance in circulating monocytes in contrast to increasing apoptosis in CD4 T cells from the same infected subjects. As potential mechanisms in vivo, we show that monocyte CCR5 binding by HIV-1 virus or agonist chemokines serve as independent viral and host modulators resulting in increased monocyte apoptosis resistance in vitro. We also show evidence for concordance between circulating monocyte apoptosis-related gene expression in HIV-1 infection in vivo and available datasets following viral infection or envelope exposure in monocyte derived macrophages in vitro. The identification of in vivo gene expression associated with monocyte resistance to apoptosis is of relevance to AIDS pathogenesis since it would contribute to: (1) maintaining viability of infection targets and long-term reservoirs of HIV-1 infection in the monocyte/macrophage populations, and (2) protecting a cell subset critical to host survival in spite of sustained high viral replication. Keywords: two group study design 33 samples hybridized, including 13 HIV-1 Patients, 12 Healthy Controls and 4 HIV-1 Patients and 4 Controls followed 6 months later
2010-06-25 | E-GEOD-14542 | biostudies-arrayexpress
Project description:Mechanisms that may allow circulating monocytes to persist as CD4 T cells diminish in HIV-1 infection have not been investigated. We have characterized steady-state gene expression signatures in circulating monocytes from HIV-infected subjects and have identified a stable anti-apoptosis gene signature comprised of 38 genes associated with p53, CD40L, TNF and MAPKinase signaling networks. The significance of this gene signature is indicated by our demonstration of cadmium chloride- or Fas ligand-induced apoptosis resistance in circulating monocytes in contrast to increasing apoptosis in CD4 T cells from the same infected subjects. As potential mechanisms in vivo, we show that monocyte CCR5 binding by HIV-1 virus or agonist chemokines serve as independent viral and host modulators resulting in increased monocyte apoptosis resistance in vitro. We also show evidence for concordance between circulating monocyte apoptosis-related gene expression in HIV-1 infection in vivo and available datasets following viral infection or envelope exposure in monocyte derived macrophages in vitro. The identification of in vivo gene expression associated with monocyte resistance to apoptosis is of relevance to AIDS pathogenesis since it would contribute to: (1) maintaining viability of infection targets and long-term reservoirs of HIV-1 infection in the monocyte/macrophage populations, and (2) protecting a cell subset critical to host survival in spite of sustained high viral replication. Keywords: two group study design
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Project description:Previous studies have shown that cannabis use in people living with HIV-1 is associated with a lower viral load, lower circulating CD16+ monocytes, and high CD4+ T-cell count, suggesting a potential therapeutic application. HIV-1 infected U1 monocytes and primary macrophages were used to assess the effects of CBD in HIV-1 infection. Our data suggests that CBD treatment results in a significant reduction in the number of EVs released from infected cells. Additional findings suggest that this may be mediated by a reduction in viral transcription and autophagy activation. To see the effect of CBD in autophagy activation, U1 and U1 Monocyte Derived Macrophages cells were cultured and lysed. D-Biotin or Biotinylated CBD pull-down from the lysates was performed using Streptavidin-Sepharose beads, which were washed with TNE50 / TNE300 (high salt) + 0.1% NP40 buffers. The complexes were analyzed by mass spectrometry. Reactome enrichment analysis was used to assess the CBD pull-down of HIV-1 infected monocytes (U1) and HIV-1 infected MDM proteins for involvement of the autophagy pathway.
2022-04-04 | PXD027263 | Pride
Project description:The susceptibility of macrophages to HIV-1 infection is modulated during monocyte differentiation. IL-27 is an anti-HIV cytokine that also modulates monocyte activation. Here, we present new evidence that IL-27 promotes monocyte differentiation into macrophages that are non-permissive for HIV-1 infection. While IL-27 treatment does not affect expression of macrophage differentiation markers or macrophage biological functions, it confers HIV resistance by down-regulating spectrin beta non-erythrocyte 1 (SPTBN1), a required host factor for HIV-1 infection. IL-27 down-regulates SPTBN1 through a TAK-1-mediated MAPK signaling pathway. Knockdown of SPTBN1 strongly inhibits HIV-1 infection of macrophages; conversely, overexpression of SPTBN1 markedly increases HIV susceptibility of IL-27 treated macrophages. Moreover, we demonstrate that SPTBN1 associates with HIV-1 gag proteins. Collectively, our results underscore the ability of IL-27 to protect macrophages from HIV-1 infection by down-regulating SPTBN1, thus indicating that SPTBN1 is an important host target to reduce HIV-1 replication in one major element of the viral reservoir. 2 samples with different treatments were analyzed. Genes with absolute fold change >= 5 were selected.
2013-01-18 | E-GEOD-43595 | biostudies-arrayexpress
Project description:Macrophages play a crucial role in HIV-1 pathogenesis. Toll-like receptors (TLRs) are fundamental for innate and adaptive immune responses, but their role in HIV-1 infection is still incompletely understood. The TLR3 and TLR4 ligands poly(I:C) and LPS are known to modulate HIV-1 infection of and replication in monocyte-derived macrophages (MDMs), but the mechanism is incompletely understood. We found that MDMs stimulation with poly(I:C) or LPS abrogated infection by CCR5-using, macrophage-tropic HIV-1, or by VSV-G-pseudotyped HIV-1 virions, while TLR7 and TLR9 agonists Imiquimod and CpG only reduced infection to varying extent. Suppression of infection, or lack thereof, did not correlate with differential effects on CD4 or CCR5 expression, type I interferon induction, or production of pro-inflammatory cytokines. Furthermore, integrated pro-viruses were readily detected in unstimulated, TLR7- and TLR9-stimulated cells, but not in TLR3- or TLR4-stimulated MDMs, suggesting the alteration of post-entry, pre-integration event(s). MicroRNA (miRNA) microarray and real time PCR demonstrated increased miR-155 levels in MDMs upon TLR3/4, but not TLR7, stimulation, and a miR-155 inhibitor partially restored infectivity in poly(I:C)-stimulated MDMs. Finally, miR-155 over-expression in MDMs and cell lines remarkably diminished HIV-1 infection, inducing an accumulation of late reverse transcription products, concurrently with a decrease in mRNA levels of several HIV-1 dependency factors involved in nuclear import of pre-integration complexes. Our results suggest that miR-155 may target mRNA(s) for host cell protein(s) that either participate in or facilitate post-entry, pre-integration events, resulting in severely diminished HIV-1 infection. miRNA profiles were investigated in total RNA isolated from unstimulated and TLR3-, TLR4- and TLR7-stimulated human MDMs from a single normal donor
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Project description:The susceptibility of macrophages to HIV-1 infection is modulated during monocyte differentiation. IL-27 is an anti-HIV cytokine that also modulates monocyte activation. Here, we present new evidence that IL-27 promotes monocyte differentiation into macrophages that are non-permissive for HIV-1 infection. While IL-27 treatment does not affect expression of macrophage differentiation markers or macrophage biological functions, it confers HIV resistance by down-regulating spectrin beta non-erythrocyte 1 (SPTBN1), a required host factor for HIV-1 infection. IL-27 down-regulates SPTBN1 through a TAK-1-mediated MAPK signaling pathway. Knockdown of SPTBN1 strongly inhibits HIV-1 infection of macrophages; conversely, overexpression of SPTBN1 markedly increases HIV susceptibility of IL-27 treated macrophages. Moreover, we demonstrate that SPTBN1 associates with HIV-1 gag proteins. Collectively, our results underscore the ability of IL-27 to protect macrophages from HIV-1 infection by down-regulating SPTBN1, thus indicating that SPTBN1 is an important host target to reduce HIV-1 replication in one major element of the viral reservoir.
2013-01-18 | GSE43595 | GEO
Project description:Analysis of gene expression of MCF10A to identify the targets of miR-221 and miR-222 Keywords: MCF10, miR-221, miR-222
2011-06-14 | GSE29327 | GEO
Project description:mRNA breast cancer cell lines were profiled to study the function of hsa-mir-221 and hsa-mir-222. MCF7 cell lines were profiled after treatment with mir-221/222 mimics, and compared to profiles with transfection controls. Similarly, MDA-MB-231 cell lines were profiled after treatment with mir-221/222 inhibitors, and compared to profiles with transfection controls. Since ESR1 is a predicted target of mir-221/222 we also profiled MCF7 cell lines after disrupting ESR1 with an siRNA. Other breast cancer cell lines are provided because all cell lines were normalized together. Keywords: breast cancer, cell line, hsa-mir-221, hsa-mir-222, ESR1
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2018-05-15 | GSE114434 | GEO