title: Heparanase promotes human gastric cancer cells migration and invasion by increasing Src and p38 phosphorylation expression.
abstract: Gastric cancer is one of the most common cancers and it remains difficult to cure, primarily because most cancer stem like cells possess higher capability of invasion and metastasis. Heparanase acts as a master regulator of the aggressive tumor phenotype in part by enhancing expression of proteins and activating signaling molecules. There were less associated with heparanase of molecular biology mechanism in human gastric cancer. We first evaluated the endogenous expression of heparanase in human gastric cancer cell lines and found Heparanase expression higher in SGC-7901 than MGC-803. Using the technology of RNAi in SGC-7901 cells down regulated heparanase gene, and reduced SGC-7901 cells migration and invasion. On the other hand, recombinant heparanase protein added in MGC-803 cells enhanced MGC-803 cell migration and invasion. The elevated cell migration and invasion were impaired by treatment of Src inhibitor pp2 or p38 inhibitor SB 203580. We further found that Stable knockdown of heparanase in SGC-7901 cells decreased phosphorylation of Src and p38. The phosphorylation of p38 was inhibited in response to pp2 treatment while the addition of SB 203580 to SGC-7901 cells did not change phosphorylation of Src. These data suggest that heparanase facilitates invasion and migration of human gastric cancer cells probably through elevating phosphorylation of Src and p38.
authors.affiliation: Department of Pathology, The Affiliated Hospital of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China ; Department of Pathology, School of Basic Medical Sciences of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China.
authors.forename: Xiu Mei
authors.initials: XM
authors.lastname: Ma
authors.affiliation: The Graduate Faculty of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China.
authors.forename: Zhi Hua
authors.initials: ZH
authors.lastname: Shen
authors.affiliation: Department of Pathology, School of Basic Medical Sciences of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China.
authors.forename: Zhi Yao
authors.initials: ZY
authors.lastname: Liu
authors.affiliation: Department of Pathology, The Affiliated Hospital of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China ; Department of Pathology, School of Basic Medical Sciences of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.affiliation: Department of Pathology, The Affiliated Hospital of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China ; Department of Pathology, School of Basic Medical Sciences of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Hai
authors.affiliation: Department of Pathology, The Affiliated Hospital of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China ; Department of Pathology, School of Basic Medical Sciences of Inner Mongolia Medical University Hohhot 010059, Inner Mongolia Autonomous Region, China.
authors.forename: Lin Tao
authors.initials: LT
authors.lastname: Gao
authors.affiliation: Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Inner Mongolia Medical University Hohhot, Inner Mongolia Autonomous Region, 010110, China.
authors.forename: Hai Sheng
authors.initials: HS
authors.lastname: Wang
mesh_terms: D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D015971:Gene Expression Regulation, Enzymologic; D015972:Gene Expression Regulation, Neoplastic; D005966:Glucuronidase / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D009361:Neoplasm Invasiveness; D010766:Phosphorylation; D047428:Protein Kinase Inhibitors / Q000494:pharmacology; D034622:RNA Interference; D015398:Signal Transduction; D013274:Stomach Neoplasms / Q000201:enzymology* / Q000235:genetics / Q000473:pathology; D014162:Transfection; D048051:p38 Mitogen-Activated Protein Kinases / Q000037:antagonists & inhibitors / Q000378:metabolism*; D019061:src-Family Kinases / Q000037:antagonists & inhibitors / Q000378:metabolism*; D000099175:Heparanase
chemical_list: D005966:Glucuronidase; D047428:Protein Kinase Inhibitors; D048051:p38 Mitogen-Activated Protein Kinases; D019061:src-Family Kinases; D000099175:Heparanase
keywords: Gastric cancer; heparanase; invasion; migration; p38 kinase; src kinase