PRDM16 deficiency in vascular smooth muscle cells aggravates abdominal aortic aneurysm

Wang, Zhenguo1; Zhao, Xiangjie1,2; Zhao, Guizhen1; Guo, Yanhong1; Lu, Haocheng1,3; Mu, Wenjuan1; Zhong, Juan1; Garcia-Barrio, Minerva1; Zhang, Jifeng1; Chen, Y. Eugene1,5; Chang, Lin1,4

2023-06-08

10.1172/jci.insight.167041

JCI INSIGHT   影响因子和分区

2379-3708

Abdominal aortic aneurysm (AAA) is usually asymptomatic until life-threatening complications occur, predominantly involving aortic rupture. Currently, no drug-based treatments are available, primarily due to limited understanding of AAA pathogenesis. The transcriptional regulator PR domain-containing protein 16 (PRDM16) is highly expressed in the aorta, but its functions in the aorta are largely unknown. By RNA-seq analysis, we found that vascular smooth muscle cell- specific (VSMC-specific) Prdm16-knockout (Prdm16SMKO) mice already showed extensive changes in the expression of genes associated with extracellular matrix (ECM) remodeling and inflammation in the abdominal aorta under normal housing conditions without any pathological stimuli. Human AAA lesions displayed lower PRDM16 expression. Periadventitial elastase application to the suprarenal region of the abdominal aorta aggravated AAA formation in Prdm16SMKO mice. During AAA development, VSMCs undergo apoptosis because of both intrinsic and environmental changes, including inflammation and ECM remodeling. Prdm16 deficiency promoted inflammation and apoptosis in VSMCs. A disintegrin and metalloproteinase 12 (ADAM12) is a gelatinase that can degrade various ECMs. We found that ADAM12 is a target of transcriptional repression by PRDM16. Adam12 knockdown reversed VSMC apoptosis induced by Prdm16 deficiency. Our study demonstrated that PRDM16 deficiency in VSMCs promoted ADAM12 expression and aggravates AAA formation, which may provide potential targets for AAA treatment.

SCI

英语

其他

NIH["HL151524","HL153710","HL159871","HL162294"]

Research & Experimental Medicine

Medicine, Research & Experimental

WOS:001009969500001

AMER SOC CLINICAL INVESTIGATION INC

Web of Science

1.Univ Michigan Med Ctr, Cardiovasc Ctr, Dept Internal Med, Ann Arbor, MI USA
2.Northeast Agr Univ, Coll Life Sci, Key Lab Anim Cellular & Genet, Engn Heilongjiang Prov, Harbin, Peoples R China
3.Southern Univ Sci & Technol, Dept Pharmacol, Shenzhen, Peoples R China
4.Univ Michigan Med Ctr, Cardiovasc Ctr, Dept Internal Med, 2800 Plymouth Rd, Ann Arbor, MI 48109 USA
5.Univ Michigan Med Ctr, Cardiovasc Ctr, Dept Cardiac Surg, 2800 Plymouth Rd, Ann Arbor, MI 48109 USA

Wang, Zhenguo,Zhao, Xiangjie,Zhao, Guizhen,et al. PRDM16 deficiency in vascular smooth muscle cells aggravates abdominal aortic aneurysm[J]. JCI INSIGHT,2023,8(11).

Wang, Zhenguo.,Zhao, Xiangjie.,Zhao, Guizhen.,Guo, Yanhong.,Lu, Haocheng.,...&Chang, Lin.(2023).PRDM16 deficiency in vascular smooth muscle cells aggravates abdominal aortic aneurysm.JCI INSIGHT,8(11).

Wang, Zhenguo,et al."PRDM16 deficiency in vascular smooth muscle cells aggravates abdominal aortic aneurysm".JCI INSIGHT 8.11(2023).