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Coordinate expression of OPN and associated receptors during monocyte/macrophage differentiation of HL-60 cells

✍ Scribed by Kevin Atkins; Janice E. Berry; Wei-Zhen Zhang; John F. Harris; Ann F. Chambers; Robert U. Simpson; Martha J. Somerman

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
272 KB
Volume
175
Category
Article
ISSN
0021-9541

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✦ Synopsis

Promyelocytic leukemia HL-60 cells promoted by PMA to differentiate along the monocyte pathway adhere to tissue culture plates. To explore the regulation of adhesion molecules in cells promoted to differentiate, the expression and secretion of osteopontin (OPN) and expression of associated cell surface receptors, CD44 and integrin subunits a v , b 3 , b 1 , were examined. Results were as follows: 1) PMA induced OPN mRNA and OPN secretion into media; 2) untreated cells expressed b 1 and CD44 mRNA, and PMA induced a v and b 3 mRNA and increased b 1 and CD44 mRNA expression; 3) PMA increased levels of a v , b 3 , b 1 and CD44 protein on the cell surface; and 4) retinoic acid, which promotes granulocytic differentiation of HL-60 cells, did not affect OPN, a v , b 3 , b 1 , or CD44 mRNA or protein expression. These data suggest that induction of OPN and associated receptors may play a role during monocytic differentiation of HL-60 cells.

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