@article {7807, title = {Reversal of Aging-Induced Increases in Aortic Stiffness by Targeting Cytoskeletal Protein-Protein Interfaces.}, journal = {J Am Heart Assoc}, volume = {7}, year = {2018}, month = {2018 Jul 18}, abstract = {

BACKGROUND: The proximal aorta normally functions as a critical shock absorber that protects small downstream vessels from damage by pressure and flow pulsatility generated by the heart during systole. This shock absorber function is impaired with age because of aortic stiffening.

METHODS AND RESULTS: We examined the contribution of common genetic variation to aortic stiffness in humans by interrogating results from the AortaGen Consortium genome-wide association study of carotid-femoral pulse wave velocity. Common genetic variation in the N-WASP () locus is associated with carotid-femoral pulse wave velocity (rs600420, =0.0051). Thus, we tested the hypothesis that decoy proteins designed to disrupt the interaction of cytoskeletal proteins such as N-WASP with its binding partners in the vascular smooth muscle cytoskeleton could decrease ex~vivo stiffness of aortas from a mouse model of aging. A synthetic decoy peptide construct of N-WASP significantly reduced activated stiffness in ex~vivo aortas of aged mice. Two other cytoskeletal constructs targeted to VASP and talin-vinculin interfaces similarly decreased aging-induced ex~vivo active stiffness by on-target specific actions. Furthermore, packaging these decoy peptides into microbubbles enables the peptides to be ultrasound-targeted to the wall of the proximal aorta to attenuate ex~vivo active stiffness.

CONCLUSIONS: We conclude that decoy peptides targeted to vascular smooth muscle cytoskeletal protein-protein interfaces and microbubble packaged can decrease aortic stiffness ex~vivo. Our results provide proof of concept at the ex~vivo level that decoy peptides targeted to cytoskeletal protein-protein interfaces may lead to substantive dynamic modulation of aortic stiffness.

}, issn = {2047-9980}, doi = {10.1161/JAHA.118.008926}, author = {Nicholson, Christopher J and Singh, Kuldeep and Saphirstein, Robert J and Gao, Yuan Z and Li, Qian and Chiu, Joanna G and Leavis, Paul and Verwoert, Germaine C and Mitchell, G F and Porter, Tyrone and Morgan, Kathleen G} } @article {9707, title = {Whole-genome sequencing uncovers two loci for coronary artery calcification and identifies ARSE as a regulator of vascular calcification.}, journal = {Nat Cardiovasc Res}, volume = {2}, year = {2023}, month = {2023 Dec}, pages = {1159-1172}, abstract = {

Coronary artery calcification (CAC) is a measure of atherosclerosis and a well-established predictor of coronary artery disease (CAD) events. Here we describe a genome-wide association study (GWAS) of CAC in 22,400 participants from multiple ancestral groups. We confirmed associations with four known loci and identified two additional loci associated with CAC ( and ), with evidence of significant associations in replication analyses for both novel loci. Functional assays of and in human vascular smooth muscle cells (VSMCs) demonstrate that is a promoter of VSMC calcification and VSMC phenotype switching from a contractile to a calcifying or osteogenic phenotype. Furthermore, we show that the association of variants near with reduced CAC is likely explained by reduced expression with the G allele of enhancer variant rs5982944. Our study highlights ARSE as an important contributor to atherosclerotic vascular calcification, and a potential drug target for vascular calcific disease.

}, issn = {2731-0590}, doi = {10.1038/s44161-023-00375-y}, author = {de Vries, Paul S and Conomos, Matthew P and Singh, Kuldeep and Nicholson, Christopher J and Jain, Deepti and Hasbani, Natalie R and Jiang, Wanlin and Lee, Sujin and Lino Cardenas, Christian L and Lutz, Sharon M and Wong, Doris and Guo, Xiuqing and Yao, Jie and Young, Erica P and Tcheandjieu, Catherine and Hilliard, Austin T and Bis, Joshua C and Bielak, Lawrence F and Brown, Michael R and Musharoff, Shaila and Clarke, Shoa L and Terry, James G and Palmer, Nicholette D and Yanek, Lisa R and Xu, Huichun and Heard-Costa, Nancy and Wessel, Jennifer and Selvaraj, Margaret Sunitha and Li, Rebecca H and Sun, Xiao and Turner, Adam W and Stilp, Adrienne M and Khan, Alyna and Newman, Anne B and Rasheed, Asif and Freedman, Barry I and Kral, Brian G and McHugh, Caitlin P and Hodonsky, Chani and Saleheen, Danish and Herrington, David M and Jacobs, David R and Nickerson, Deborah A and Boerwinkle, Eric and Wang, Fei Fei and Heiss, Gerardo and Jun, Goo and Kinney, Greg L and Sigurslid, Haakon H and Doddapaneni, Harshavardhan and Hall, Ira M and Bensenor, Isabela M and Broome, Jai and Crapo, James D and Wilson, James G and Smith, Jennifer A and Blangero, John and Vargas, Jose D and Mosquera, Jose Verdezoto and Smith, Joshua D and Viaud-Martinez, Karine A and Ryan, Kathleen A and Young, Kendra A and Taylor, Kent D and Lange, Leslie A and Emery, Leslie S and Bittencourt, Marcio S and Budoff, Matthew J and Montasser, May E and Yu, Miao and Mahaney, Michael C and Mahamdeh, Mohammed S and Fornage, Myriam and Franceschini, Nora and Lotufo, Paulo A and Natarajan, Pradeep and Wong, Quenna and Mathias, Rasika A and Gibbs, Richard A and Do, Ron and Mehran, Roxana and Tracy, Russell P and Kim, Ryan W and Nelson, Sarah C and Damrauer, Scott M and Kardia, Sharon L R and Rich, Stephen S and Fuster, Valentin and Napolioni, Valerio and Zhao, Wei and Tian, Wenjie and Yin, Xianyong and Min, Yuan-I and Manning, Alisa K and Peloso, Gina and Kelly, Tanika N and O{\textquoteright}Donnell, Christopher J and Morrison, Alanna C and Curran, Joanne E and Zapol, Warren M and Bowden, Donald W and Becker, Lewis C and Correa, Adolfo and Mitchell, Braxton D and Psaty, Bruce M and Carr, John Jeffrey and Pereira, Alexandre C and Assimes, Themistocles L and Stitziel, Nathan O and Hokanson, John E and Laurie, Cecelia A and Rotter, Jerome I and Vasan, Ramachandran S and Post, Wendy S and Peyser, Patricia A and Miller, Clint L and Malhotra, Rajeev} }