GM-CSF promotes the functional maturation of lung alveolar macrophages (A-MØ), whose differentiation is dependent on the peroxisome proliferator-activated receptor gamma (PPARγ) transcription factor. In fact, blockade of GM-CSF-initiated signaling or deletion of the PPARγ-encoding gene PPARG leads to functionally defective A-MØ and the onset of pulmonary alveolar proteinosis. In vitro, macropha...

OBJECTIVE Granulocyte colony-stimulating factor (G-CSF) in combination with plerixafor produces significant mobilization of CD34(+) cells in rhesus macaques. We sought to evaluate whether these CD34(+) cells can stably reconstitute blood cells with lentiviral gene marking. MATERIALS AND METHODS We performed hematopoietic stem cell transplantation using G-CSF and plerixafor-mobilized rhesus CD...

The transcription factor PU.1 is required for normal blood cell development. PU.1 regulates the expression of a number of crucial myeloid genes, such as the macrophage colony-stimulating factor (M-CSF) receptor, the granulocyte colony-stimulating factor (G-CSF) receptor, and the granulocyte-macrophage colony-stimulating factor (GM-CSF) receptor. Myeloid cells derived from PU.1(-/-) mice are blo...

Abstract Generation of immunity against cancer through vaccination has long been an elusive goal for tumor immunologists. Putative candidates targets include oncofetal antigens, viral neoantigens, and differentiation antigens. The first attempts at used injections whole autologous cells. However, these unmodified cells did not engender a robust immune response. Subsequent efforts were focused e...

In previous studies we showed that 5 days of treatment with granulocyte colony-stimulating factor (G-CSF) and stem cell factor (SCF) mobilized murine repopulating cells to the peripheral blood (PB) and that these cells could be efficiently transduced with retroviral vectors. We also found that, 7-14 days after cytokine treatment, the repopulating ability of murine bone marrow (BM) increased 10-...

To investigate the immunomodulatory activities of phytocompounds for potential therapeutics, we devised an in vivo, transgenic, human cytokine gene promoter assay using defined epidermal skin cells as test tissue. Test compounds were topically applied to mouse skin before or after gene gun transfection, using a cytokine gene promoter-driven luciferase reporter. Croton oil, an inflammation induc...

The granulocyte colony-stimulating factor (G-CSF)-induced gene, GIG-1, was originally cloned from G-CSF-stimulated bone marrow mononuclear cells obtained from a patient with chronic myelogenous leukemia (CML). We have characterized the GIG-1 gene and its protein product. Expression of GIG-1 mRNA was elevated by treatment with G-CSF in normal bone marrow mononuclear cells, as well as in some cas...

In the present study, IL (interleukin)-1beta increased GM-CSF (granulocyte/macrophage colony-stimulating factor) expression from pulmonary A549 cells and primary HBE (human bronchial epithelial) cells. These responses were repressed by the glucocorticoid dexamethasone, allowing the use of A549 cells as a relevant model. IL-1beta induced GM-CSF release into the culture medium by 6 h and in cell ...

A novel human granulocyte colony-stimulating factor (G-CSF) receptor isoform, designated SD, has been identified in which the distal C-terminal cytoplasmic region, previously shown to be essential for maturation signalling, is substituted by an altered C-terminus. The SD receptor has a high affinity for G-CSF and retains the membrane-proximal cytoplasmic region known to be sufficient for prolif...

Interleukin-3 (IL-3)-dependent mouse myeloid 32DC13 cells differentiate to neutrophils in response to granulocyte colony-stimulating factor (G-CSF). Introduction of the human c-fms gene, which encodes the receptor for CSF-1, into 32DC13 cells gave rise to variants that were able to proliferate in medium containing either murine IL-3 or human recombinant CSF-1, but were unable to differentiate t...