2009 Fiscal Year Final Research Report
Proteomic analysis of the pathogenesis of proteinuria and nephrotic syndrome.
| Project/Area Number |
19390281
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Pediatrics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
IGARASHI Takashi The University of Tokyo, 医学部附属病院, 教授 (70151256)
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| Co-Investigator(Kenkyū-buntansha) |
SEKINE Takashi 東邦大学, 医学部附属病院・大橋病院, 教授 (50255402)
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| Co-Investigator(Renkei-kenkyūsha) |
HARITA Yutaka 横浜市立大学, 生命ナノシステム科学研究科, 特任助教 (10451866)
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| Project Period (FY) |
2007 – 2009
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| Keywords | ネフローゼ症候群 / 蛋白尿 / プロテオミクス |
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| Research Abstract |
A specialized intercellular junction between podocytes, known as the slit diaphragm, forms the essential structural framework for glomerular filtration in the kidney. In this study, we performed proteomic analysis to characterize the structure and function of slit diaphragm as a signaling complex. We found that post-translational modification orchestrates a wide spectrum of protein-protein interactions and intracellular signaling networks at slit diaphragm. These results unraveled the role of dynamics of slit diaphragm signal complex in modulating the glomerular filtration barrier function. We also performed genetic studies on Epstein and Fechtner syndromes which often develops progressive nephrotic syndrome, and found that R702 mutations display a strict genotype-phenotype correlation, and lead to the rapid deterioration of podocyte structure. Our results highlight the critical role of functional podocyte molecules in the development of Nephrotic syndrome.
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Research Products
(34 results)
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[Journal Article] Functional analysis of a novel missense NBC1 mutation and of othe mutations causing proximal renal tubular acidosis2008
Author(s)
Suzuki M, Vaisbich MH, Yamada H, Horita S, Li Y, Sekine T, Moriyama N, Igarashi T, Endo Y, Cardoso TP, de Sa LC, Koch VH, Seki G, Fujita T
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Journal Title
Pflugers Arch-Eur J Physiol 455
Pages: 583-593
Peer Reviewed
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[Journal Article] OCRL1 mutations in patients with Dent disease phenotype in Japan.2007
Author(s)
Sekine T, Nozu K, Iyengar R, Fu XJ, Matsuo M, Tanaka R, Iijima K, Matsui E, Harita Y, Inatomi J, Igarashi T
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Journal Title
Pediatr. Nephrol. 22
Pages: 975-980
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[Journal Article] Glomerular proteins related to slit diaphragm and matrix adhesion in the foot processes are highly tyrosine phosphorylated in the normal rat kidney.
Author(s)
Zhang Y, Yoshida Y, Nameta M, Xu B, Taguchi I, Ikeda T, Fujinaka H, Mohamed SM, Tsukaguchi H, Harita Y, Yaoita E, Yamamoto T
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Journal Title
Nephrol Dial Transplant. (in press)
Peer Reviewed
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