Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression analysis of blood cells and tumor

ABSTRACT: This SuperSeries is composed of the following subset Series: GSE38976: Gene expression profiles of whole blood cells and the fraction enriched with tumor-infiltrating inflammatory cells of Balb/c athymic mice with Hepa1-6 tumors GSE38979: Gene expression profiles of blood and the enriched fraction of tumor-infiltrating inflammatory cells of C57Bl/6 mice with Hepa1-6 tumors GSE38980: Gene expression profiles of whole blood cells of C57Bl/6 mice with Hepa1-6 tumors GSE38981: Gene expression profiles of Hepa1-6 tumors in C57Bl/6 mice Refer to individual Series

ORGANISM(S): Mus musculus

SUBMITTER: Yoshio Sakai

PROVIDER: E-GEOD-39075 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Traditional Chinese Medicine (TCM) has been used for thousands of years to treat or prevent diseases, including cancer. Good manufacturing practices (GMP) and sophisticated product analysis (PhytomicsQC) to ensure consistency are now available allowing the assessment of its utility. Polychemical Medicines, like TCM, include chemicals with distinct tissue-dependent pharmacodynamic properties that result in tissue-specific bioactivity. Determining the mode of action of these mixtures was previously unsatisfactory; however, information rich RNA microarray technologies now allow for thorough mechanistic studies about complex mixtures effects. PHY906 is a long used four herb TCM formula employed as adjuvant to relieve side effects associated with chemotherapy. Animal studies documented a decrease in global toxicity and an increase in therapeutic effectiveness of chemotherapy when PHY906 was combined. Using a systems biology approach, we studied tumor tissue to identify reasons for the enhancement of the antitumor effect of Irinotecan by PHY-906 in a well-characterized pre-clinical model; PHY-906 and Irinotecan were administered orally to female BDF-1 mice bearing subcutaneous Colon 38 tumors. We observed that 1) individually PHY-906 and Irinotecan induce distinct alterations in tumor, liver and spleen; 2) PHY-906 alone predominantly induces repression of transcription and immune-suppression in tumors; 3) these effects are reverted in the presence of Irinotecan, with prevalent induction of pro-apoptotic and pro-inflammatory pathways that may favor tumor rejection. Most importantly, PHY-906 together with Irinotecan triggers unique changes not activated by each one alone suggesting that the combination creates a unique tissue-specific response. Four groups of BDF-1 mice bearing colon 38 tumors were treated with Phosphate Buffered Saline (PBS) (n=10), PHY-906 (n=10), Irinotecan (CPT-11, Camptosar(TM)) (n=10) or the combination PHY-906 and Irinotecan (n=10). Tumor (38 samples), spleen (38 samples), and liver (35 samples) tissues were removed and frozen for total RNA isolation and subsequent microarray hybridization. There were a total of 111 samples representing 12 treated tissue groups with 8 to 10 biological replicates each. A reference sample was generated from a pool of mixed normal mouse tissue.

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Gene expression analysis of blood cells and tumor

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