Mouse cells cyclophosphamide treated vs untreated
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE27440 | GEO | 2011/04/27
SECONDARY ACCESSION(S): PRJNA137089
REPOSITORIES: GEO
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Project description:This SuperSeries is composed of the following subset Series: GSE27421: Mouse bone marrow cyclophosphamide treated vs untreated GSE27422: Mouse peripheral blood leukocytes cyclophosphamide treated vs untreated GSE27423: Mouse spleen cyclophosphamide treated vs untreated Refer to individual Series
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Project description:Analysis the effect of cyclophosphamide on splenocytes gene expression. Certain chemotherapeutic drugs such as cyclophosphamide can enhance the antitumor efficacy of immunotherapy because of their capacity to modulate innate and adaptive immunity. Indeed, it has been argued that this capacity may be more significant to chemotherapeutic efficacy in general than is presently appreciated. To gain insights into the core mechanisms of chemoimmunotherapy, we methodically profiled the effects of cyclophosphamide on gene expression in bone marrow, spleen and peripheral blood, and on cytokine expression in plasma and bone marrow of tumor-bearing mice. Gene and protein expression were modulated early and transiently by cyclophosphamide, leading to upregulation of a variety of immunomodulatory factors, including danger signals, pattern recognition receptors, inflammatory mediators, growth factors, cytokines, chemokines and chemokine receptors. These factors are involved in sensing cyclophosphamide myelotoxicity and activating repair mechanisms, which, in turn, stimulate immunoactivation events that promote efficacy. In particular, cyclophosphamide induced a T helper 17 (Th17)-related gene signature associated with an increase in Th17, Th1 and activated CD25+CD4+Foxp3- T lymphocytes and a slight recovery of regulatory T-cells. By analyzing gene and protein expression kinetics and their relationship to the antitumor efficacy of different therapeutic schedules of combination, we determined that optimal timing for performing adoptive immunotherapy is approximately 1 day after cyclophosphamide treatment. Together, our findings highlight factors that may propel the efficacy of chemoimmunotherapy, offering a mechanistic glimpse of the important immune modulatory effects of cyclophosphamide
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Project description:Analysis the effect of cyclophosphamide on bone marrow gene expression. Certain chemotherapeutic drugs such as cyclophosphamide can enhance the antitumor efficacy of immunotherapy because of their capacity to modulate innate and adaptive immunity. Indeed, it has been argued that this capacity may be more significant to chemotherapeutic efficacy in general than is presently appreciated. To gain insights into the core mechanisms of chemoimmunotherapy, we methodically profiled the effects of cyclophosphamide on gene expression in bone marrow, spleen and peripheral blood, and on cytokine expression in plasma and bone marrow of tumor-bearing mice. Gene and protein expression were modulated early and transiently by cyclophosphamide, leading to upregulation of a variety of immunomodulatory factors, including danger signals, pattern recognition receptors, inflammatory mediators, growth factors, cytokines, chemokines and chemokine receptors. These factors are involved in sensing cyclophosphamide myelotoxicity and activating repair mechanisms, which, in turn, stimulate immunoactivation events that promote efficacy. In particular, cyclophosphamide induced a T helper 17 (Th17)-related gene signature associated with an increase in Th17, Th1 and activated CD25+CD4+Foxp3- T lymphocytes and a slight recovery of regulatory T-cells. By analyzing gene and protein expression kinetics and their relationship to the antitumor efficacy of different therapeutic schedules of combination, we determined that optimal timing for performing adoptive immunotherapy is approximately 1 day after cyclophosphamide treatment. Together, our findings highlight factors that may propel the efficacy of chemoimmunotherapy, offering a mechanistic glimpse of the important immune modulatory effects of cyclophosphamide
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