title: Analysis of abnormally expressed genes in synovium from patients with rheumatoid arthritis using a column gel electrophoresis-coupled subtractive hybridization technique.
abstract: Rheumatoid arthritis (RA) is a chronic disease of unknown pathogenesis. To identify abnormally expressed genes in synovium from RA patients, we performed column gel electrophoresis-coupled subtractive hybridization (CGESH). CGESH is a newly developed subtractive hybridization technique to achieve sufficient enrichment of DNA sequences. CGESH was performed using restricted enzyme digested cDNA synthesized from mRNA of synovial tissues from one RA patient and one osteoarthritis (OA) patient. The obtained subtraction libraries (RA-OA) were screened by dot blot hybridization. The clones showing higher hybridization with the RA-OA probe were identified by sequence analysis and homology search. Their DNA sequencing revealed that the genes of HLA-DRB1, sequestosome 1, elongation factor 1alpha were included. Furthermore, a functionally unknown gene (FLJ00133) was also identified. It is reported that sequestosome 1 is a scaffold in the signal transduction of TNFalpha and interleukin 1, which are the important cytokines involved in the pathogenesis of RA. It is possible that other genes identified by the CGESH technique would be associated with the pathogenesis of RA, although there is no direct evidence yet. Our results imply that the CGESH technique is a useful tool to detect genes involved in the pathogenesis of RA. Further investigation of the functional roles of candidate genes should shed light on the pathogenesis of RA.
authors.affiliation: Division of Rheumatology, Department of Internal Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba City, Ibaraki 305-8575, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Tomoo
authors.forename: Akito
authors.initials: A
authors.lastname: Tsutsumi
authors.forename: Takanori
authors.initials: T
authors.lastname: Yasukochi
authors.forename: Kotaro
authors.initials: K
authors.lastname: Ikeda
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Ochiai
authors.forename: Kazuo
authors.initials: K
authors.lastname: Ozawa
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Shibanaka
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ito
authors.forename: Isao
authors.initials: I
authors.lastname: Matsumoto
authors.forename: Daisuke
authors.initials: D
authors.lastname: Goto
authors.forename: Takayuki
authors.initials: T
authors.lastname: Sumida
mesh_terms: D001172:Arthritis, Rheumatoid / Q000235:genetics*; D018076:DNA, Complementary / Q000235:genetics / Q000378:metabolism; D004586:Electrophoresis / Q000379:methods*; D020869:Gene Expression Profiling / Q000379:methods*; D005786:Gene Expression Regulation / Q000235:genetics*; D006801:Humans; D009693:Nucleic Acid Hybridization / Q000379:methods*; D013583:Synovial Membrane / Q000378:metabolism*; D015854:Up-Regulation / Q000235:genetics
chemical_list: D018076:DNA, Complementary