Transcriptional suppression of nephrin in podocytes by macrophages: Roles of inflammatory cytokines and involvement of the PI3K/Akt pathway

Expression of nephrin, a crucial component of the glomerular slit diaphragm, is downregulated in patients with proteinuric glomerular diseases. Using conditionally immortalized reporter podocytes, we found that bystander macrophages as well as macrophage-derived cytokines IL-1β and TNF-α markedly su...

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Veröffentlicht in:FEBS letters 2007-02, Vol.581 (3), p.421-426
Hauptverfasser: Takano, Yosuke, Yamauchi, Kozue, Hayakawa, Kunihiro, Hiramatsu, Nobuhiko, Kasai, Ayumi, Okamura, Maro, Yokouchi, Makiko, Shitamura, Akihiro, Yao, Jian, Kitamura, Masanori
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container_end_page 426
container_issue 3
container_start_page 421
container_title FEBS letters
container_volume 581
creator Takano, Yosuke
Yamauchi, Kozue
Hayakawa, Kunihiro
Hiramatsu, Nobuhiko
Kasai, Ayumi
Okamura, Maro
Yokouchi, Makiko
Shitamura, Akihiro
Yao, Jian
Kitamura, Masanori
description Expression of nephrin, a crucial component of the glomerular slit diaphragm, is downregulated in patients with proteinuric glomerular diseases. Using conditionally immortalized reporter podocytes, we found that bystander macrophages as well as macrophage-derived cytokines IL-1β and TNF-α markedly suppressed activity of the nephrin gene promoter in podocytes. The cytokine-initiated repression was reversible, observed on both basal and inducible expression, independent of Wilms’ tumor suppressor WT1, and caused in part via activation of the phosphatidylinositol-3-kinase/Akt pathway. These results indicated a novel mechanism by which activated macrophages participate in the induction of proteinuria in glomerular diseases.
doi_str_mv 10.1016/j.febslet.2006.12.051
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Yamauchi, Kozue ; Hayakawa, Kunihiro ; Hiramatsu, Nobuhiko ; Kasai, Ayumi ; Okamura, Maro ; Yokouchi, Makiko ; Shitamura, Akihiro ; Yao, Jian ; Kitamura, Masanori</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5728-5bc9ff530cd1d7b438c9d130782bfb71e686aeca6f1df2c2eb33b9631850c4f63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>12-o-tetradecanoylphorbol-13-acetate</topic><topic>all-trans retinoic acid</topic><topic>Animals</topic><topic>ATRA</topic><topic>Cell Communication</topic><topic>Cells, Cultured</topic><topic>Cytokines - metabolism</topic><topic>Cytokines - pharmacology</topic><topic>Down-Regulation - drug effects</topic><topic>FBS</topic><topic>fetal bovine serum</topic><topic>GAPDH</topic><topic>glyceraldehydes-3-phosphate dehydrogenase</topic><topic>hepatocyte growth factor</topic><topic>HGF</topic><topic>Humans</topic><topic>IL-1β</topic><topic>Inflammation Mediators - metabolism</topic><topic>Inflammation Mediators - pharmacology</topic><topic>Interleukin-1beta - metabolism</topic><topic>Interleukin-1beta - pharmacology</topic><topic>lipopolysaccharide</topic><topic>LPS</topic><topic>Macrophage</topic><topic>macrophage-conditioned medium</topic><topic>Macrophages - immunology</topic><topic>Macrophages - metabolism</topic><topic>Membrane Proteins - genetics</topic><topic>Mice</topic><topic>MϕCM</topic><topic>Nephrin</topic><topic>Phosphatidylinositol 3-Kinases - metabolism</topic><topic>Phosphatidylinositol-3-kinase</topic><topic>phosphophatidylinositol-3-kinase</topic><topic>PI3K</topic><topic>PKC</topic><topic>Podocyte</topic><topic>Podocytes - drug effects</topic><topic>Podocytes - metabolism</topic><topic>Promoter Regions, Genetic</topic><topic>protein kinase C</topic><topic>Proto-Oncogene Proteins c-akt - metabolism</topic><topic>RAR</topic><topic>RARE</topic><topic>REPON</topic><topic>reporter podocytes for nephrin</topic><topic>retinoic acid receptor</topic><topic>retinoic acid response element</topic><topic>reverse transcriptase-polymerase chain reaction</topic><topic>RT-PCR</topic><topic>SEAP</topic><topic>secreted alkaline phosphatase</topic><topic>TNF-α</topic><topic>TPA</topic><topic>Tumor Necrosis Factor-alpha - metabolism</topic><topic>Tumor Necrosis Factor-alpha - pharmacology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Takano, Yosuke</creatorcontrib><creatorcontrib>Yamauchi, Kozue</creatorcontrib><creatorcontrib>Hayakawa, Kunihiro</creatorcontrib><creatorcontrib>Hiramatsu, Nobuhiko</creatorcontrib><creatorcontrib>Kasai, Ayumi</creatorcontrib><creatorcontrib>Okamura, Maro</creatorcontrib><creatorcontrib>Yokouchi, Makiko</creatorcontrib><creatorcontrib>Shitamura, Akihiro</creatorcontrib><creatorcontrib>Yao, Jian</creatorcontrib><creatorcontrib>Kitamura, Masanori</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Immunology Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>FEBS letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Takano, Yosuke</au><au>Yamauchi, Kozue</au><au>Hayakawa, Kunihiro</au><au>Hiramatsu, Nobuhiko</au><au>Kasai, Ayumi</au><au>Okamura, Maro</au><au>Yokouchi, Makiko</au><au>Shitamura, Akihiro</au><au>Yao, Jian</au><au>Kitamura, Masanori</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transcriptional suppression of nephrin in podocytes by macrophages: Roles of inflammatory cytokines and involvement of the PI3K/Akt pathway</atitle><jtitle>FEBS letters</jtitle><addtitle>FEBS Lett</addtitle><date>2007-02-06</date><risdate>2007</risdate><volume>581</volume><issue>3</issue><spage>421</spage><epage>426</epage><pages>421-426</pages><issn>0014-5793</issn><eissn>1873-3468</eissn><abstract>Expression of nephrin, a crucial component of the glomerular slit diaphragm, is downregulated in patients with proteinuric glomerular diseases. 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source Wiley-Blackwell Journals; MEDLINE; Elsevier ScienceDirect Journals Complete; Free E-Journal (出版社公開部分のみ); Wiley Open Access; Alma/SFX Local Collection
subjects 12-o-tetradecanoylphorbol-13-acetate
all-trans retinoic acid
Animals
ATRA
Cell Communication
Cells, Cultured
Cytokines - metabolism
Cytokines - pharmacology
Down-Regulation - drug effects
FBS
fetal bovine serum
GAPDH
glyceraldehydes-3-phosphate dehydrogenase
hepatocyte growth factor
HGF
Humans
IL-1β
Inflammation Mediators - metabolism
Inflammation Mediators - pharmacology
Interleukin-1beta - metabolism
Interleukin-1beta - pharmacology
lipopolysaccharide
LPS
Macrophage
macrophage-conditioned medium
Macrophages - immunology
Macrophages - metabolism
Membrane Proteins - genetics
Mice
MϕCM
Nephrin
Phosphatidylinositol 3-Kinases - metabolism
Phosphatidylinositol-3-kinase
phosphophatidylinositol-3-kinase
PI3K
PKC
Podocyte
Podocytes - drug effects
Podocytes - metabolism
Promoter Regions, Genetic
protein kinase C
Proto-Oncogene Proteins c-akt - metabolism
RAR
RARE
REPON
reporter podocytes for nephrin
retinoic acid receptor
retinoic acid response element
reverse transcriptase-polymerase chain reaction
RT-PCR
SEAP
secreted alkaline phosphatase
TNF-α
TPA
Tumor Necrosis Factor-alpha - metabolism
Tumor Necrosis Factor-alpha - pharmacology
title Transcriptional suppression of nephrin in podocytes by macrophages: Roles of inflammatory cytokines and involvement of the PI3K/Akt pathway
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