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2017 ; 7
(1
): 11889
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Mucosa-associated lymphoid tissue lymphoma translocation 1 as a novel therapeutic
target for rheumatoid arthritis
#MMPMID28928392
Lee CH
; Bae SJ
; Kim M
Sci Rep
2017[Sep]; 7
(1
): 11889
PMID28928392
show ga
Emerging evidence suggests that mucosa-associated lymphoid tissue lymphoma
translocation 1 (MALT1) is a key regulator of inflammatory diseases; however, the
pathological role of MALT1 in rheumatoid arthritis (RA) is not well understood.
Consequently, this protein has not been therapeutically targeted for the
treatment of RA. MALT1 plays a role in the paracaspase pathway, has proteolytic
activity and is involved in the regulation of inflammatory responses. In this
study, we found that the MALT1-targeting inhibitory small molecule, MALT1
selective inhibitor
2-chloro-N-[4-[5-(3,4-dichlorophenyl)-3-(2-methoxyethoxy)-1H-1,2,4-triazol-1-yl]phenylacetamide
(MI-2) strongly suppresses the differentiation of monocytes into osteoclasts in
the absence or presence of the inflammatory cytokine tumour necrosis factor ?.
Furthermore, MI-2 ameliorates pathologic bone erosion and synovitis in an in vivo
mouse model of collagen-induced arthritis. Mechanistically, MI-2 blocked
expression of the master osteoclast regulator - nuclear factor of activated T
cells 1 (NFATc1) - by inhibiting nuclear factor ?B (NF-?B), which is a critical
regulator of NFATc1. These findings highlight the important regulatory role of
MALT1 in the NF-?B-NFATc1-signalling axis during osteoclastogenesis and suggest
that targeting MALT1 is a promising treatment option for rheumatoid arthritis.