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. 1993 Jul;17(7):561-5.
doi: 10.1016/0145-2126(93)90085-y.

Is binding of vitamin D binding protein related to cell differentiation?

M Petrini  1 , P Valentini, A Allegrini, A Sabbatini, R Testi, F Ambrogi, P Arnaud, R M Galbraith
Affiliations

Is binding of vitamin D binding protein related to cell differentiation?

M Petrini et al. Leuk Res. 1993 Jul.

Abstract

Vitamin D binding protein (Gc) is present on the surface of several blood cells and may interfere with the activity of 1,25(OH)2D3. It has previously been reported that Gc may bind to the U-937 line which is known to differentiate upon exposition to 1,25(OH)2D3. In the present paper, we evaluate the expression of Gc on the surface of U-937 and HL-60 lines. Both cell lines did not express Gc on their surface but U-937 cells were able to bind human purified Gc added to the medium whereas HL-60 were not. After culturing with 1,25(OH)2D3, HL-60 became able to bind Gc. This property seems to be related to the monocytic differentiation induced by 1,25(OH)2D3. Conversely, when present together, 1,25(OH)2D3 reduces binding on U-937.

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