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2015 ; 16
(5
): 10507-25
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Dihydroaustrasulfone Alcohol (WA-25) Impedes Macrophage Foam Cell Formation by
Regulating the Transforming Growth Factor-?1 Pathway
#MMPMID25961956
Wang YC
; Hung HC
; Feng CW
; Huang SY
; Chen CH
; Lin YY
; Chen YC
; Yang SN
; Su JH
; Sheu JH
; Wen ZH
Int J Mol Sci
2015[May]; 16
(5
): 10507-25
PMID25961956
show ga
Atherosclerosis is considered an inflammatory disease. However, clinically used
anti-atherosclerotic drugs, such as simvastatin, have many side effects.
Recently, several unique marine compounds have been isolated that possess a
variety of bioactivities. In a previous study, we found a synthetic precursor of
the marine compound (austrasulfone), which is dihydroaustrasulfone alcohol
(WA-25), has anti-atherosclerotic effects in vivo. However, the detailed
mechanisms remain unclear. Therefore, to clarify the mechanisms through which
WA-25 exerts anti-atherosclerotic activity, we used RAW 264.7 macrophages as an
in vitro model to evaluate the effects of WA-25. In lipopolysaccharide
(LPS)-stimulated RAW 264.7 cells, WA-25 significantly inhibited expression of the
pro-inflammatory proteins, inducible nitric oxide synthase (iNOS) and
cyclooxygenase-2 (COX-2). In contrast, simvastatin increased the COX-2 expression
compared to WA-25. In addition, WA-25 impedes foam cell formation and
up-regulated the lysosomal and cyclic adenosine monophosphate (cAMP) signaling
pathway. We also observed that transforming growth factor ?1 (TGF-?1) was
up-regulated by WA-25 and simvastatin in LPS-induced RAW 264.7 cells, and the
promising anti-atherosclerosis effects of WA-25 were disrupted by blockade of
TGF-?1 signaling. Besides, WA-25 might act through increasing lipolysis than
through alteration of lipid export. Taken together, these data demonstrate that
WA-25 may have potential as an anti-atherosclerotic drug with anti-inflammatory
effects.
|Animals
[MESH]
|Anti-Inflammatory Agents/*pharmacology
[MESH]
|Butanones/*pharmacology
[MESH]
|Cell Line
[MESH]
|Cyclic AMP/metabolism
[MESH]
|Cyclooxygenase 2/genetics/metabolism
[MESH]
|Foam Cells/*drug effects/metabolism
[MESH]
|Mice
[MESH]
|Nitric Oxide Synthase Type II/genetics/metabolism
[MESH]