Mechanistic studies of disease progression in aortic aneurysms

主动脉瘤疾病进展的机制研究

• 批准号: 10427154
• 负责人: MEHRAN M SADEGHI
• 金额: --
• 依托单位: VA CONNECTICUT HEALTHCARE SYSTEM
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-01-01 至 2023-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10427154
• 关键词: Abdominal Aortic Aneurysm; Address; Affect; Aneurysm; Angiotensin II; Animals; Aortic Aneurysm; Apolipoprotein E; Apolipoproteins; Biology; Calcium Chloride; Caliber; Cessation of life; Clinical Research; Clinical Trials; Conflict (Psychology); Data; Detection; Development; Disease; Disease Progression; Doxycycline; Effectiveness; Elastases; Elastin; Evaluation; Evolution; Future; Gene Deletion; Growth; Health; Health Care Costs; High Prevalence; Human; Image; Imaging Techniques; Immunity; Inflammation; Inflammatory; Knockout Mice; Knowledge; Lead; Link; Longitudinal Studies; MME gene; Matrix Metalloproteinase Inhibitor; Matrix Metalloproteinases; Measurement; Medical; Modeling; Molecular; Monitor; Morbidity - disease rate; Mus; Neutrophil Infiltration; Operative Surgical Procedures; Patients; Pattern; Play; Pre-Clinical Model; Resolution; Role; Rupture; Ruptured Abdominal Aortic Aneurysm; Smoker; Testing; Tissues; Vascular Diseases; Vascular remodeling; Veterans; X-Ray Computed Tomography; base; disease heterogeneity; disease mechanisms study; imaging approach; improved; in vivo; inhibitor; macrophage; molecular imaging; mortality; mouse model; multimodality; nanoparticle; new therapeutic target; non-drug; novel; nuclear imaging; patient population; preclinical study; prevent; repaired; risk stratification; serial imaging; spatial relationship; therapeutic effectiveness; therapeutic target; tool; treatment response

Abdominal aortic aneurysm (AAA), a prevalent disease amongst veterans, affects more than 1 in 9 smokers and is responsible for 10,000 documented deaths every year in the US. AAA treatment remains limited to surgical or endovascular repair for large aneurysms. This lack of an effective medical therapy reflects existing gaps in knowledge regarding the molecular mechanisms of AAA, and lack of reliable tools for evaluating vessel wall biology and monitoring therapeutic effectiveness in vivo. Several matrix metalloproteinases (MMPs), including MMP-12 are upregulated in human AAA, and a number of MMPs have been linked to AAA development. Elastin degradation is a key feature of aneurysm and MMP-12 is considered the primary elastase in this setting. There are conflicting data regarding the role of MMP-12 in aneurysm development and emerging information point to both anti- and pro-inflammatory functions for MMP-12 in inflammatory disorders. This in conjunction with our preliminary data raise the intriguing hypothesis that MMP- 12 plays a dual role in aneurysm: inhibiting early stage aneurysm development through inhibition of neutrophil recruitment to the vessel wall, and promoting expansion and rupture of established aneurysms by enhancing vessel wall inflammation. Here, we introduce novel molecular imaging techniques for high resolution tracking of vessel wall inflammation and MMP/MMP-12 imaging, which in conjunction with selective inhibitors and knockout mice will be used to a) investigate the temporal and spatial pattern of MMP/MMP-12 activation in relation to AAA development, progression and rupture; and b) address the role of MMP-12 in aneurysm. Vascular remodeling will be tracked with high resolution multimodality molecular and structural imaging followed by histomorphometric analysis in two complementary murine models, namely angiotensin II-induced and calcium chloride-induced aneurysms. The temporal and spatial relationship between vessel wall biology, response to therapy, and aneurysm expansion and rupture will be addressed through serial imaging in the same animal. The effects of MMP-12 gene deletion and MMP-12 inhibition on aneurysm development, and evolution of established aneurysms will be addressed. Combined, these studies will address novel aspects of aneurysm pathobiology, validate novel therapeutic targets in preclinical models, and establish novel imaging approaches for evaluation of vessel wall biology in aneurysms. Ultimately, this should lead to improved management of patients with AAA (and possibly other vascular diseases); and reduce related morbidity, mortality, and healthcare costs.

腹主动脉瘤（AAA）是退伍军人中的一种常见病，患病人数超过九分之一

项目成果

Novel Matrix Metalloproteinase 12 selective radiotracers for vascular molecular imaging.

• DOI: 10.1021/acs.jmedchem.9b01186
• 发表时间: 2019-10
• 期刊: Journal of medicinal chemistry
• 影响因子: 7.3
• 作者: Jakub Toczek;Thomas Bordenave;K. Gona;Hye-Yeong Kim;F. Beau;D. Georgiadis;Isabelle Correia;Y. Ye;Mahmoud Razavian;Jaejoon Jung;O. Lequin;V. Dive;M. Sadeghi;L. Devel

Deletion of matrix metalloproteinase-12 compromises mechanical homeostasis and leads to an aged aortic phenotype in young mice.

• DOI: 10.1016/j.jbiomech.2022.111179
• 发表时间: 2022-08
• 期刊: JOURNAL OF BIOMECHANICS
• 影响因子: 2.4
• 作者: Spronck, Bart;Ramachandra, Abhay B.;Moriyama, Lauren;Toczek, Jakub;Han, Jinah;Sadeghi, Mehran M.;Humphrey, Jay D.
• 通讯作者: Humphrey, Jay D.

Computed tomography imaging of macrophage phagocytic activity in abdominal aortic aneurysm.

• DOI: 10.7150/thno.55106
• 发表时间: 2021
• 期刊: Theranostics
• 影响因子: 12.4
• 作者: Toczek J;Boodagh P;Sanzida N;Ghim M;Salarian M;Gona K;Kukreja G;Rajendran S;Wei L;Han J;Zhang J;Jung JJ;Graham M;Liu X;Sadeghi MM
• 通讯作者: Sadeghi MM

ESDN inhibits melanoma progression by blocking E-selectin expression in endothelial cells via STAT3.

• DOI: 10.1016/j.canlet.2021.04.005
• 发表时间: 2021-07-10
• 期刊: Cancer letters
• 影响因子: 9.7
• 作者: Coppo R;Orso F;Virga F;Dalmasso A;Baruffaldi D;Nie L;Clapero F;Dettori D;Quirico L;Grassi E;Defilippi P;Provero P;Valdembri D;Serini G;Sadeghi MM;Mazzone M;Taverna D
• 通讯作者: Taverna D