Smooth muscle cell-specific Tgfbr1 deficiency promotes aortic aneurysm formation by stimulating multiple signaling events.
Smooth muscle cell-specific Tgfbr1 deficiency promotes aortic aneurysm formation by stimulating multiple signaling events.
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DOI:
10.1038/srep35444
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发表时间:
2016-10-14
影响因子:
4.6
通讯作者:
Jiang Z
中科院分区:
文献类型:
--
作者:
Yang P;Schmit BM;Fu C;DeSart K;Oh SP;Berceli SA;Jiang Z
Transforming growth factor (TGF)-β signaling disorder has emerged as a common molecular signature for aortic aneurysm development. The timing of postnatal maturation plays a key role in dictating the biological outcome of TGF-β signaling disorders in the aortic wall. In this study, we investigated the impact of deficiency of TGFβ receptors on the structural homeostasis of mature aortas. We used an inducible Cre-loxP system driven by a Myh11 promoter to delete Tgfbr1, Tgfbr2, or both in smooth muscle cells (SMCs) of adult mice. TGFBR1 deficiency resulted in rapid and severe aneurysmal degeneration, with 100% penetrance of ascending thoracic aortas, whereas TGFBR2 deletion only caused mild aortic pathology with low (26%) lesion prevalence. Removal of TGFBR2 attenuated the aortic pathology caused by TGFBR1 deletion and correlated with a reduction of early ERK phosphorylation. In addition, the production of angiotensin (Ang)-converting enzyme was upregulated in TGFBR1 deficient aortas at the early stage of aneurysmal degeneration. Inhibition of ERK phosphorylation or blockade of AngII type I receptor AT1R prevented aneurysmal degeneration of TGFBR1 deficient aortas. In conclusion, loss of SMC-Tgfbr1 triggers multiple deleterious pathways, including abnormal TGFBR2, ERK, and AngII/AT1R signals that disrupt aortic wall homeostasis to cause aortic aneurysm formation.
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影响因子:
1.5
作者:
Chytil, A;Magnuson, MA;Moses, HL
通讯作者:
Moses, HL
DOI:
10.1042/cs20090372
发表时间:
2010-03-09
期刊:
Clinical science (London, England : 1979)
影响因子:
--
作者:
Daugherty A;Rateri DL;Charo IF;Owens AP;Howatt DA;Cassis LA
通讯作者:
Cassis LA
DOI:
10.1161/atvbaha.112.255786
发表时间:
2012-10
期刊:
Arteriosclerosis, thrombosis, and vascular biology
影响因子:
--
作者:
Fu C;Yu P;Tao M;Gupta T;Moldawer LL;Berceli SA;Jiang Z
通讯作者:
Jiang Z
DOI:
10.1126/science.1192149
发表时间:
2011-04-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Holm TM;Habashi JP;Doyle JJ;Bedja D;Chen Y;van Erp C;Lindsay ME;Kim D;Schoenhoff F;Cohn RD;Loeys BL;Thomas CJ;Patnaik S;Marugan JJ;Judge DP;Dietz HC
通讯作者:
Dietz HC
影响因子:
3.7
作者:
Bourmoum M;Charles R;Claing A
通讯作者:
Claing A