Gamma-Interferon (Ingaron (R)) For Treatment Of Herpes Simplex Patients
CYTOKINE(2009)
Abstract
In our previous studies, it has been demonstrated that in more than 80% of mice long-lasting antitumor immunity has been established following intraperitoneal (i.p.) vaccination with tumor vaccine composed of irradiated syngeneic tumor cells and CpG ODNs class C. The aim of this study was, therefore, to investigate molecular mechanisms through which this vaccine triggers the immunity and to define genes particularly involved in this process. Changes in gene expression were followed in mononuclear cells isolated from peritoneal lavages, spleens and bone marrow samples. The expression of 84 genes significant for T-cell and B-cell activation as well as genes engaged in activation of macrophages, NK cells and DCs was determined using the RT2- Profiler PCR array. It has been observed that this tumor vaccine induces the up-regulation of genes involved in activation, proliferation and survival of memory T-cells (Cd8a, Cd8b1, Prlr, Was, Cxcl12, Il12, Sftpd, Tnfrsf13c, Il15, Il18), and prevents the activation of genes involved in generation of Treg and induction of immune tolerance (Sit1, Sla2, Cd1d1, Pdcd1lg2, Pawr, Socs5, Il27, Il4). We may conclude based on results of gene expression analysis, that tumor vaccine fine-tunes the proportion of cytotoxic to regulatory lymphocytes having an important impact on the induction and maintenance of memory cells in bone marrow.
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Key words
Cancer Therapy
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