title: Characterization of gene expression induced by RET with MEN2A or MEN2B mutation.
abstract: Germ-line point mutations of the RET gene are responsible for multiple endocrine neoplasia (MEN) type 2A and 2B that develop medullary thyroid carcinoma and pheochromocytoma. We performed a differential display analysis of gene expression using NIH 3T3 cells expressing the RET-MEN2A or RET-MEN2B mutant proteins. As a consequence, we identified 10 genes induced by both mutant proteins and eight genes repressed by them. The inducible genes include cyclin D1, cathepsins B and L, and cofilin genes that are known to be involved in cell growth, tumor progression, and invasion. In contrast, the repressed genes include type I collagen, lysyl oxidase, annexin I, and tissue inhibitor of matrix metalloproteinase 3 (TIMP3) genes that have been implicated in tumor suppression. In addition, six RET-MEN2A- and five RET-MEN2B-inducible genes were identified. Among 21 genes induced by RET-MEN2A and/or RET-MEN2B, six genes including cyclin D1, cathepsin B, cofilin, ring finger protein 11 (RNF11), integrin-alpha6, and stanniocalcin 1 (STC1) genes were also induced in TGW human neuroblastoma cells in response to glial cell line-derived neurotrophic factor stimulation. Because the STC1 gene was found to be highly induced by both RET-MEN2B and glial cell line-derived neurotrophic factor stimulation, and the expression of its product was detected in medullary thyroid carcinoma with the MEN2B mutation by immunohistochemistry, this may suggest a possible role for STC1 in the development of MEN 2B phenotype.
authors.affiliation: Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Watanabe
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Ichihara
authors.forename: Mizuo
authors.initials: M
authors.lastname: Hashimoto
authors.forename: Keiko
authors.initials: K
authors.lastname: Shimono
authors.forename: Yoshie
authors.initials: Y
authors.lastname: Shimoyama
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Nagasaka
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Murakumo
authors.forename: Hideki
authors.initials: H
authors.lastname: Murakami
authors.forename: Hideshi
authors.initials: H
authors.lastname: Sugiura
authors.forename: Hisashi
authors.initials: H
authors.lastname: Iwata
authors.forename: Naoki
authors.initials: N
authors.lastname: Ishiguro
authors.forename: Masahide
authors.initials: M
authors.lastname: Takahashi
mesh_terms: D016475:3T3 Cells; D000818:Animals; D018276:Carcinoma, Medullary / Q000378:metabolism; D003626:Data Display; D029721:Drosophila Proteins; D015870:Gene Expression / Q000187:drug effects; D005786:Gene Expression Regulation / Q000187:drug effects; D051100:Glial Cell Line-Derived Neurotrophic Factor; D051097:Glial Cell Line-Derived Neurotrophic Factor Receptors; D006023:Glycoproteins / Q000378:metabolism; D006728:Hormones / Q000378:metabolism; D051379:Mice; D018813:Multiple Endocrine Neoplasia Type 2a / Q000235:genetics*; D018814:Multiple Endocrine Neoplasia Type 2b / Q000235:genetics*; D009154:Mutation / Q000187:drug effects*; D009414:Nerve Growth Factors; D009419:Nerve Tissue Proteins / Q000494:pharmacology; D011518:Proto-Oncogene Proteins; D051096:Proto-Oncogene Proteins c-ret; D020794:Receptor Protein-Tyrosine Kinases; D013964:Thyroid Neoplasms / Q000378:metabolism; D014407:Tumor Cells, Cultured
chemical_list: D029721:Drosophila Proteins; C495040:Gdnf protein, mouse; D051100:Glial Cell Line-Derived Neurotrophic Factor; D051097:Glial Cell Line-Derived Neurotrophic Factor Receptors; D006023:Glycoproteins; D006728:Hormones; D009414:Nerve Growth Factors; D009419:Nerve Tissue Proteins; D011518:Proto-Oncogene Proteins; C051795:teleocalcin; D051096:Proto-Oncogene Proteins c-ret; D020794:Receptor Protein-Tyrosine Kinases; C416649:Ret protein, Drosophila; C494999:Ret protein, mouse