Project description:Peritoneal carcinomatosis is a frequent finding in patients with primary gastric cancer, and it is associated with a poor prognosis. A major mechanism in peritoneal carcinomatosis is the dissemination of cancer cells into the abdominal cavity, mainly in diffuse gastric adenocarcinoma. The features that enable diffuse primary gastric tumours to develop peritoneal dissemination have been little investigated and are only incompletely understood. We therefore compared the gene expression profile in patients with diffuse primary gastric cancer with and without peritoneal carcinomatosis. Specimens from consecutive gastric cancer patients with and without peritoneal carcinomatosis were investigated using oligonucleotide microarrays. Keywords: Disease state analysis
Project description:Characterizations of ascites proteome from ovarian peritoneal carcinomatosis (PC) and gastric PC have demonstrated that ascites contains elevated pro-tumorigenic factors. Reasoning that the composition of ascitic fluid might offer insight into the memory of key biological events occurring intra-abdominally, we hypothesized that paracrine factors essential for survival and growth of peritoneal deposits are secreted into and circulate within ascitic fluid. Our data from cytokine array profile suggest that ascites contains biologically active ligands capable of supporting cellular functions of cancer cells. To decipher downstream signalling pathways activated in cancer cells when exposed to ascites, we performed gene expression analysis of Colo-205 cells upon exposure to PC ascites and ligand inhibitor.
Project description:To identify the proteome of human peritoneal tissue, 43 FFPE and 5 fresh frozen peritoneal tissue samples at healthy or non-cancerous state were collected and subjected to mass spectrometry analysis. The resulting findings represnt a baseline catalog of the proteomic composition of the peritoneum, as a comparison dataset for future studies focused on alterations in pathologic states such as peritoneal carcinomatosis.
Project description:Peritoneal carcinomatosis (PC) remains a significant clinical challenge, with limited therapeutic options. Adoptive cell therapy (ACT) using tumor-specific T cells has emerged as a promising strategy; however, its efficacy is often hindered by the immunosuppressive tumor microenvironment (TME). Interleukin-33 (IL-33), a member of the IL-1 family, plays a dual role in immunity and inflammation, with the potential to enhance antitumor responses. Here, we investigated the impact of IL-33 mRNA-engineered T cells on ACT efficacy in murine models of PC and explored the potential synergy with IL-12 mRNA.