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A Restricted Set of Apical Proteins Recycle Through the Trans-Golgi Network in MDCK Cells

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Journal EMBO J
Date 1989 Nov 1
PMID 2510995
Citations 7
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Abstract

Sorting of newly synthesized proteins destined for the apical plasma membrane takes place in the trans-Golgi network (TGN) in MDCK cells. This process is most likely receptor mediated and requires components that recycle between both compartments. We have developed an assay to detect apical proteins that recycle through the sialyltransferase-containing TGN. Cell surface glycoproteins were exogalactosylated apically using a mutant cell line derived from MDCK, MDCKII-RCAr. The mutant exhibits impaired galactosylation of glycoconjugates and thereby allows maximal incorporation of exogenously added galactose in the presence of galactosyltransferase. Upon reculture at 37 degrees C, a time-dependent increase of sialylated apical surface glycoproteins was observed by lectin binding as well as by the sialic acid-specific NaIO4/NaB[3H]4 labeling technique. This indicates that some galactosylated surface molecules had returned to the TGN. Recycling through the TGN was blocked, if exogalactosylated cells were incubated at 20 degrees C. Two-dimensional gel electrophoresis identified three apical proteins which recycle through the TGN, suggesting that this pathway is selective for a subset of the apical surface proteins.

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References
1.
Van Lenten L, ASHWELL G . Studies on the chemical and enzymatic modification of glycoproteins. A general method for the tritiation of sialic acid-containing glycoproteins. J Biol Chem. 1971; 246(6):1889-94. View

2.
Rodriguez-Boulan E, Salas P . External and internal signals for epithelial cell surface polarization. Annu Rev Physiol. 1989; 51:741-54. DOI: 10.1146/annurev.ph.51.030189.003521. View

3.
Markwell M, Haas S, Bieber L, Tolbert N . A modification of the Lowry procedure to simplify protein determination in membrane and lipoprotein samples. Anal Biochem. 1978; 87(1):206-10. DOI: 10.1016/0003-2697(78)90586-9. View

4.
Dunn W, Hubbard A, ARONSON Jr N . Low temperature selectively inhibits fusion between pinocytic vesicles and lysosomes during heterophagy of 125I-asialofetuin by the perfused rat liver. J Biol Chem. 1980; 255(12):5971-8. View

5.
Pierce M, Turley E, Roth S . Cell surface glycosyltransferase activities. Int Rev Cytol. 1980; 65:1-47. DOI: 10.1016/s0074-7696(08)61958-0. View