Interaction with podocin facilitates nephrin signaling
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Interaction with podocin facilitates nephrin signaling. / Huber, T B; Kottgen, M; Schilling, B; Walz, G; Benzing, T.
In: J BIOL CHEM, Vol. 276, No. 45, 09.11.2001, p. 41543-6.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Interaction with podocin facilitates nephrin signaling
AU - Huber, T B
AU - Kottgen, M
AU - Schilling, B
AU - Walz, G
AU - Benzing, T
PY - 2001/11/9
Y1 - 2001/11/9
N2 - Mutations of NPHS1 or NPHS2, the genes encoding for the glomerular podocyte proteins nephrin and podocin, cause steroid-resistant proteinuria. In addition, mice lacking CD2-associated protein (CD2AP) develop a nephrotic syndrome that resembles NPHS mutations suggesting that all three proteins are essential for the integrity of glomerular podocytes. Although the precise glomerular function of either protein remains unknown, it has been suggested that nephrin forms zipper-like interactions to maintain the structure of podocyte foot processes. We demonstrate now that nephrin is a signaling molecule, which stimulates mitogen-activated protein kinases. Nephrin-induced signaling is greatly enhanced by podocin, which binds to the cytoplasmic tail of nephrin. Mutational analysis suggests that abnormal or inefficient signaling through the nephrin-podocin complex contributes to the development of podocyte dysfunction and proteinuria.
AB - Mutations of NPHS1 or NPHS2, the genes encoding for the glomerular podocyte proteins nephrin and podocin, cause steroid-resistant proteinuria. In addition, mice lacking CD2-associated protein (CD2AP) develop a nephrotic syndrome that resembles NPHS mutations suggesting that all three proteins are essential for the integrity of glomerular podocytes. Although the precise glomerular function of either protein remains unknown, it has been suggested that nephrin forms zipper-like interactions to maintain the structure of podocyte foot processes. We demonstrate now that nephrin is a signaling molecule, which stimulates mitogen-activated protein kinases. Nephrin-induced signaling is greatly enhanced by podocin, which binds to the cytoplasmic tail of nephrin. Mutational analysis suggests that abnormal or inefficient signaling through the nephrin-podocin complex contributes to the development of podocyte dysfunction and proteinuria.
KW - Base Sequence
KW - Humans
KW - Intracellular Signaling Peptides and Proteins
KW - Membrane Proteins
KW - Mitogen-Activated Protein Kinases
KW - Molecular Sequence Data
KW - Proteins
KW - Transcription Factor AP-1
KW - p38 Mitogen-Activated Protein Kinases
KW - Journal Article
KW - Research Support, Non-U.S. Gov't
U2 - 10.1074/jbc.C100452200
DO - 10.1074/jbc.C100452200
M3 - SCORING: Journal article
C2 - 11562357
VL - 276
SP - 41543
EP - 41546
JO - J BIOL CHEM
JF - J BIOL CHEM
SN - 0021-9258
IS - 45
ER -