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- W2023081206 abstract "Expression of tissue transglutaminase (transglutaminase II, tTG) was shown to increase drastically during monocyte differentiation into macrophages; however, its role in monocytic cells remains largely unknown. This study describes a novel function of cell surface tTG as an adhesion and migration receptor for fibronectin (Fn). Two structurally related transglutaminases, tTG and the A subunit of factor XIII (FXIIIA), are expressed on the surface of monocytic cells, whereas only surface tTG is associated with multiple integrins of the β1 and β3 subfamilies. Both surface levels of tTG and the amounts of integrin-bound tTG are sharply up-regulated during the conversion of monocytes into macrophages. In contrast, a reduction in biosynthesis and surface expression of FXIIIA accompanies monocyte differentiation. Cell surface tTG is colocalized with β1- and β3-integrins in podosomelike adhesive structures of macrophages adherent on Fn. Down-regulation of surface tTG by expression of antisense tTG construct or its inhibition by function-blocking antibodies significantly decreases adhesion and spreading of monocytic cells on Fn and, in particular, on the gelatin-binding fragment of Fn consisting of modules I6II1,2I7-9. Likewise, interfering with the adhesive function of surface tTG markedly reduces migration of myeloid cells on Fn and its gelatin-binding fragment. These data demonstrate that cell surface tTG serves as an integrin-associated adhesion receptor that might be involved in extravasation and migration of monocytic cells into tissues containing Fn matrices during inflammation." @default.
- W2023081206 created "2016-06-24" @default.
- W2023081206 creator A5040258830 @default.
- W2023081206 creator A5084734043 @default.
- W2023081206 date "2001-09-01" @default.
- W2023081206 modified "2023-10-17" @default.
- W2023081206 title "Cell surface tissue transglutaminase is involved in adhesion and migration of monocytic cells on fibronectin" @default.
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- W2023081206 doi "https://doi.org/10.1182/blood.v98.5.1567" @default.
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