ArticleCellular and molecular neurobiology2008
N-acetylglucosaminyltransferase V modifies TrKA protein, regulates the receptor function.
Article in Cellular and molecular neurobiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 6 citations in OpenAlex.
- Role of Glycans on Key Cell Surface Receptors That Regulate Cell Proliferation and Cell Death.Cells · 2021Review
- Silencing GnT-V reduces oxaliplatin chemosensitivity in human colorectal cancer cells through N-glycan alteration of organic cation transporter member 2.Experimental and therapeutic medicine · 2021Article
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3 authors at 1 institution in 1 country.
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Abstract
1. N-Acetylglucosaminyltransferases V (GnT-V/Mgat5) play a pivotal role in the processing of N-linked glycoproteins in the Golgi apparatus. The aim of the present study is to investigate whether the N-acetylglucosaminyltransferase V is able to modify TrKA, the high-affinity tyrosine kinase-type receptor for NGF, and thereby to regulate the receptor function. 2. Plasmids of the pcDNA3/GnT-V and pcDNA3 were transfected into PC12 cells. Expression of GnT-V protein was detected by Western blot. TrKA protein was examined by immunoprecipitation. Endocytosis of TrKA was investigated by the method of receptor internalization. 3. We report here that over-expression GnT-V directly modifies TrKA protein, accompanied by marked enhancement of axon outgrowth in rat pheochromocytoma cells (PC12) elicited by a low dose of NGF that alone is insufficient to induce neuronal differentiation. Further study indicated that modification of TrKA glycoprotein could directly enhance NGF-activated autophosphorylation of immunoprecipitated TrKA in vitro. To further elucidate the mechanism, we study the different time point of endocytosis of TrKA receptor. The results show that TrKA of GnT-V gene-transfected PC12 Cells delayed their removal by constitutive endocytosis as compared to the mock cells, suggesting high expression of GnT-V may affect their receptor TrKA endocytosis. 4. These results strongly suggest that N-acetylglucosaminyltransferase V functioning as a specific endogenous role of NGF receptor function, which appear to be due, at least in part, to the promotion of differentiation. This work is an important step toward intriguing innovative therapeutic strategies targeting glycosyltransferase.
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