PMID- 34295964 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240402 IS - 2366-3987 (Electronic) IS - 2366-3987 (Linking) VI - 3 IP - 3 DP - 2020 Mar TI - Collagenase-Cleavable Peptide Amphiphile Micelles as a Novel Theranostic Strategy in Atherosclerosis. LID - 1900196 [pii] LID - 10.1002/adtp.201900196 [doi] AB - Atherosclerosis is an inflammatory disease characterized by plaques that can cause sudden myocardial infarction upon rupture. Such rupture-prone plaques have thin fibrous caps due to collagenase degradation, and a noninvasive diagnostic tool and targeted therapy that can identify and treat vulnerable plaques and may inhibit the onset of acute cardiac events. Toward this goal, monocyte-binding, collagenase-inhibiting, and gadolinium-modified peptide amphiphile micelles (MCG PAMs) are developed. Monocyte chemoattractant protein-1 (MCP-1) binds to C-C chemokine receptor-2 expressed on pathological cell types present within plaques. Through the peptide binding motif of MCP-1, MCG PAMs bind to monocytes and vascular smooth muscle cells in vitro. Moreover, using magnetic resonance imaging, MCG PAMs show enhanced targeting and successful detection of plaques in diseased mice in vivo and act as contrast agents for molecular imaging. Through the collagenase-cleaving peptide sequence of collagen [VPMS-MRGG], MCG PAMs can compete for collagenases that degrade the fibrous cap of plaques, providing therapy. MCG PAM-treated mice show increased fibrous cap thickness by 61% and 113% histologically compared to nontargeting micelle- or PBS-treated mice (p = 0.0075 and 0.001, respectively). Overall, this novel multimodal nanoparticle offers new theranostic opportunities for noninvasive diagnosis and treatment of atherosclerotic plaques. FAU - Chin, Deborah D AU - Chin DD AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. FAU - Poon, Christopher AU - Poon C AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. FAU - Trac, Noah AU - Trac N AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. FAU - Wang, Jonathan AU - Wang J AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. FAU - Cook, Jackson AU - Cook J AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. FAU - Joo, Johan AU - Joo J AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. FAU - Jiang, Zhangjingyi AU - Jiang Z AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. FAU - Maria, Naomi Sulit Sta AU - Maria NSS AD - Department of Physiology and Neuroscience, Zilkha Neurogenetic, Institute and Keck School of Medicine, University of Southern California, Los Angeles 90033 CA, USA. FAU - Jacobs, Russell E AU - Jacobs RE AD - Department of Physiology and Neuroscience, Zilkha Neurogenetic, Institute and Keck School of Medicine, University of Southern California, Los Angeles 90033 CA, USA. FAU - Chung, Eun Ji AU - Chung EJ AD - Department of Biomedical Engineering, University of Southern California, Los Angeles USC 90089 CA, USA. LA - eng GR - DP2 DK121328/DK/NIDDK NIH HHS/United States GR - R00 HL124279/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20200203 PL - Germany TA - Adv Ther (Weinh) JT - Advanced therapeutics JID - 101724632 PMC - PMC8294202 MID - NIHMS1630355 OTO - NOTNLM OT - atherosclerosis OT - collagen OT - magnetic resonance imaging OT - theranostic nanoparticle OT - vulnerable plaque COIS- Conflict of Interest The authors declare no conflict of interest. EDAT- 2020/03/01 00:00 MHDA- 2020/03/01 00:01 PMCR- 2021/07/21 CRDT- 2021/07/23 06:53 PHST- 2021/07/23 06:53 [entrez] PHST- 2020/03/01 00:00 [pubmed] PHST- 2020/03/01 00:01 [medline] PHST- 2021/07/21 00:00 [pmc-release] AID - 1900196 [pii] AID - 10.1002/adtp.201900196 [doi] PST - ppublish SO - Adv Ther (Weinh). 2020 Mar;3(3):1900196. doi: 10.1002/adtp.201900196. Epub 2020 Feb 3.