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2017 ; 74
(24
): 4561-4572
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gab.com Text
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English Wikipedia
Macrophage migration inhibitory factor (MIF) modulates trophic signaling through
interaction with serine protease HTRA1
#MMPMID28726057
Fex Svenningsen Å
; Löring S
; Sørensen AL
; Huynh HUB
; Hjæresen S
; Martin N
; Moeller JB
; Elkjær ML
; Holmskov U
; Illes Z
; Andersson M
; Nielsen SB
; Benedikz E
Cell Mol Life Sci
2017[Dec]; 74
(24
): 4561-4572
PMID28726057
show ga
Macrophage migration inhibitory factor (MIF), a small conserved protein, is
abundant in the immune- and central nervous system (CNS). MIF has several
receptors and binding partners that can modulate its action on a cellular level.
It is upregulated in neurodegenerative diseases and cancer although its function
is far from clear. Here, we report the finding of a new binding partner to MIF,
the serine protease HTRA1. This enzyme cleaves several growth factors,
extracellular matrix molecules and is implicated in some of the same diseases as
MIF. We show that the function of the binding between MIF and HTRA1 is to inhibit
the proteolytic activity of HTRA1, modulating the availability of molecules that
can change cell growth and differentiation. MIF is therefore the first endogenous
inhibitor ever found for HTRA1. It was found that both molecules were present in
astrocytes and that the functional binding has the ability to modulate astrocytic
activities important in development and disease of the CNS.