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Fig. 2. TSG-6 properties and functions. TSG-6 binds specifically to GAGs, including
HA, C4S and heparin and to the proteoglycan aggrecan. It also interacts, both
covalently and non-covalently, with I
I: covalent complexes may be
involved in crosslinking HA chains, whereas non-covalent interactions
potentiate the anti-plasmin activity of I
I. TSG-6 has been implicated
in cell proliferation, the inhibition of neutrophil migration and the
regulation of CD44. The mechanisms of these activities remain to be
elucidated.