title: Pancreatic cancer cells activate CCL5 expression in mesenchymal stromal cells through the insulin-like growth factor-I pathway.
abstract: Mesenchymal stromal cells (MSCs) have a critical role in cancer progression and metastasis. Despite extensive studies of the physiological responses in cancer cells, the molecular mechanisms regulating gene expression in MSCs by cancer cells remain undefined. Here we demonstrate that CC chemokine ligand 5 (CCL5) expression was increased in MSCs co-cultured with pancreatic cancer cells (PCCs), and this activation was dependent on extracellular insulin-like growth factor (IGF-I). Moreover, CCL5 induction in MSCs was required for the activation of IGF-I pathway in PCCs. These results reveal a link between the IGF-I pathway in PCCs and CCL5 pathway in MSCs through the interaction of those cells.
authors.affiliation: Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan. hmakinos@m.tains.tohoku.ac.jp
authors.forename: Hideki
authors.initials: H
authors.lastname: Makinoshima
authors.forename: Mari
authors.initials: M
authors.lastname: Dezawa
mesh_terms: D015153:Blotting, Western; D002450:Cell Communication / Q000187:drug effects; D045744:Cell Line, Tumor; D002478:Cells, Cultured; D018946:Chemokine CCL5 / Q000235:genetics / Q000378:metabolism*; D018920:Coculture Techniques; D005786:Gene Expression Regulation; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000494:pharmacology; D008156:Luciferases / Q000235:genetics / Q000378:metabolism; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D008856:Microscopy, Fluorescence; D010190:Pancreatic Neoplasms / Q000378:metabolism / Q000473:pathology; D011401:Promoter Regions, Genetic / Q000235:genetics; D034622:RNA Interference; D017526:Receptor, IGF Type 1 / Q000235:genetics / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015398:Signal Transduction; D017154:Stromal Cells / Q000166:cytology / Q000378:metabolism*
chemical_list: C483024:CCL5 protein, human; D018946:Chemokine CCL5; D007334:Insulin-Like Growth Factor I; D008156:Luciferases; D017526:Receptor, IGF Type 1