Gene expression profile of metastatic human pancreatic cancer cells depends on the organ microenvironment.
نویسندگان
چکیده
To determine the influence of the microenvironment on changes in gene expression, we did microarray analysis on three variant lines of a human pancreatic cancer (FG, L3.3, and L3.6pl) with different metastatic potentials. The variant lines were grown in tissue culture in the subcutis (ectopic) or pancreas (orthotopic) of nude mice. Compared with tissue culture, the number of genes of which the expression was affected by the microenvironment was up-regulated in tumors growing in the subcutis and pancreas. In addition, highly metastatic L3.6pl cells growing in the pancreas expressed significantly higher levels of 226 genes than did the L3.3 or FG variant cells. Growth of the variant lines in the subcutis did not yield similar results, indicating that the orthotopic microenvironment significantly influences gene expression in pancreatic cancer cells. These data suggest that investigations of the functional consequence of gene expression require accounting for experimental growth conditions.
منابع مشابه
A Mimic of the Tumor Microenvironment on GPR30 Gene Expression in Breast Cancer
Introduction: The G-protein coupled receptor 30 (GPR30) gene is a member of the G-protein coupled receptor (GPCR) family; involved in breast, endometrial, and ovarian cancers. Many GPCR receptors that are implicated in several types of human cancers are correlated with increased cell proliferation and tumor progression; especially GPR30 gene. Methods: The breast cancer MCF-7 and MDA-MB-231 cel...
متن کاملEVALUATION OF THE EFFECTS OF IBUPROFEN CYTOTOXIC DOSE ON EXPRESSION LEVEL OF EXTRACELLULAR MATRIX DEGRADING MMP-9 AND ANTI-METASTASIS NM23 GENES IN CERVICAL CANCER CELLS
Background & Aim: Although studies have shown that ibuprofen has anticancer effects on many cancer cells, the mechanism of the ibuprofen anticancer effect in cancer cells is not still well understood. The aim of this study was to investigate the effect of cytotoxic concentration of ibuprofen on the expression level of MMP-9 and NM23 genes in cervical cancer cells. Materials & Methods: During t...
متن کاملGene Expression Changes in Pomegranate Peel Extract-Treated Triple-Negative Breast Cancer Cells
Background: Triple-negative breast cancer (TNBC) is treated with highly aggressive non-targeted chemotherapies. Safer and more effective therapeutic approaches than those currently in use are needed. Natural pomegranate peel extract (PPE) has recently been found to inhibit breast cancer progression; however, its mechanisms of action remain unclear. We hypothesized that transcriptional chan...
متن کاملSTAT3 as a Key Factor in Tumor Microenvironment and Cancer Stem Cell
Background Recent studies revealed that tumor-associated macrophages (TAMs) play a decisive role in the regulation of tumor progression by manipulating tumor oncogenesis, angiogenesis and immune functions within tumor microenvironments. Signal transducer and activator of transcription 3 (STAT3), which is a point of convergence for numerous oncogenic signalling pathways, is constitutively activ...
متن کاملAn Effective Concentration of 5-Aza-CdR to Induce Cell Death and Apoptosis in Human Pancreatic Cancer Cell Line through Reactivating RASSF1A and Up-Regulation of Bax Genes
Background: Promoter hyper-methylation of tumor suppressor genes is a common event that occurs in cancer. As methylation is a reversible modification, agents capable of reversing an abnormal methylation status should help to combat cancer. 5-Aza-CdR is a DNA methyl-transferase inhibitor. The present study aimed to evaluate the effect of 5-Aza-CdR on the proliferation of human pancreatic cancer ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Cancer research
دوره 67 1 شماره
صفحات -
تاریخ انتشار 2007