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Neuroglycan C, A Brain-Specific Chondroitin Sulfate Proteoglycan, Interacts with Pleiotrophin, A Heparin-Binding Growth Factor
被引:16
|作者:
Nakanishi, Keiko
[1
]
Tokita, Yoshihito
[1
]
Aono, Sachiko
[1
]
Ida, Michiru
[1
]
Matsui, Fumiko
[1
]
Higashi, Yujiro
[1
]
Oohira, Atsuhiko
[2
]
机构:
[1] Aichi Human Serv Ctr, Inst Dev Res, Dept Perinatol, Aichi 4800392, Japan
[2] Aichi Med Univ, Aichi, Japan
基金:
日本学术振兴会;
关键词:
Neuroglycan C;
Pleiotrophin;
Neurite outgrowth;
Chondroitin sulfate proteoglycan;
Heparin-binding growth factor;
MOLECULE HB-GAM;
PHOSPHATASE ZETA/RPTP-BETA;
PART-TIME PROTEOGLYCAN;
LONG-TERM POTENTIATION;
NEURITE OUTGROWTH;
TENASCIN-R;
EGF FAMILY;
IN-VIVO;
PROTEIN;
IDENTIFICATION;
D O I:
10.1007/s11064-010-0164-9
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Neuroglycan C (NGC) is a transmembrane-type chondroitin sulfate proteoglycan that promotes neurite outgrowth. To identify the ligand of NGC, we applied a detergent-solubilized membrane fraction of fetal rat brains to an NGC-immobilized affinity column. Several proteins were eluted from the column including an 18 kDa-band protein recognized by an anti-pleiotrophin antibody. The binding of pleiotrophin (PTN) to NGC was confirmed by a quartz crystal microbalance method and had a Kd of 8.7 nM. PTN bound to the acidic amino acid cluster of the NGC extracellular domain. In addition, PTN bound to both chondroitin sulfate-bearing NGC and chondroitinase-treated NGC prepared from the neonatal rat brain. These results suggest that NGC interacts with PTN.
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页码:1131 / 1137
页数:7
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