Although percutaneous coronary intervention (PCI) modalities such as angioplasty are often used as the standard procedure for treatment of cardiovascular disease, the number one cause of death in the U.S., they have many limitations including late restenosis and thrombosis. Delayed endothelium regeneration after vascular injury by PCI has been indicated as a major cause for these drawbacks, especially late thrombosis. Indeed, endothelium layer serves as a nature barrier for the artery and plays an important role in the prevention of platelet adhesion and smooth muscle cell proliferation and migration. Thus our long-term goal is to engineer novel multifunctional targeting nanoparticles (MTNs) that can bind specifically onto the injured arterial site to serve as a temporary barrier to prevent platelet adhesion and smooth muscle cell migration while recruiting stem cells such as endothelial progenitor cells (EPCs) for enhancing endothelium regeneration. The novel engineered MTNs will prevent platelet adhesion and encourage rapid endothelium healing at the injured site, allowing the potential of re-endothelialization in situ. To reach our goal, three specific aims are proposed: (1) To synthesize and characterize novel biodegradable, biocompatible, and hemo-compatible biomaterials including urethane-doped polyesters (UPEs) for vascular tissue engineering applications. (2) To formulate MTNs, which are made of UPEs, loaded with therapeutic reagents including growth factors, and conjugated with both the injured arterial wall targeting ligands and the EPC binding molecules. Various properties of MTNs including the effects of MTNs on platelet deposition and endothelium regeneration in vitro will be further investigated. (3) To determine the effectiveness of novel MTNs in vivo for endothelium regeneration in situ following PCI injury using animal models. There are several innovative aspects associated with this research. Our engineered MTNs, based on recent advances in both tissue engineering and nanotechnology, provide a unique strategy to promote endothelium regeneration and hence to stimulate vascular healing after PCI while preventing platelet adhesion. Another novel aspect of our research is that the engineered MTNs utilize the combination of (1) targeting injured arteries, (2) reducing platelet adhesion by serving as a temporary barrier, (3) capturing EPC at the targeted sites, which indirectly reduce platelet deposition on the damaged areas, and (4) promoting endothelium regeneration using engineered tissue nanoscaffolds. The proposed MTNs will bring in a significant improvement in the treatment of PCI-associated vascular injury and should generate highly scientific and economic impacts in cardiovascular disease therapy.
Cardiovascular interventions such as angioplasty and stenting are commonly employed to open a blockage of the narrowed blood vessel. These procedures, however, often damage the arterial wall, leading to the development of late pathological conditions such as thrombosis (blood clot), inflammation, and restenosis (re- narrowing of an artery). This research project aims to develop novel, multifunctional nanoparticle systems that perform several functions such as reducing platelet accumulation onto the injured arterial wall, capturing endothelial progenitor cells in the circulation to this site, and subsequently promoting the maturation of these cells into endothelial cells for vascular endothelium regeneration, thereby leading to the natural healing of vascular injury after interventions.
|Pandey, Nikhil; Hakamivala, Amirhossein; Xu, Cancan et al. (2018) Biodegradable Nanoparticles Enhanced Adhesiveness of Mussel-Like Hydrogels at Tissue Interface. Adv Healthc Mater 7:e1701069|
|Gyawali, Dipendra; Kim, Jimin P; Yang, Jian (2018) Highly photostable nanogels for fluorescence-based theranostics. Bioact Mater 3:39-47|
|Menon, Jyothi U; Kuriakose, Aneetta; Iyer, Roshni et al. (2017) Dual-Drug Containing Core-Shell Nanoparticles for Lung Cancer Therapy. Sci Rep 7:13249|
|Kim, Jimin P; Xie, Zhiwei; Creer, Michael et al. (2017) Citrate-based fluorescent materials for low-cost chloride sensing in the diagnosis of Cystic Fibrosis. Chem Sci 8:550-558|
|Xie, Zhiwei; Su, Yixue; Kim, Gloria B et al. (2017) Immune Cell-Mediated Biodegradable Theranostic Nanoparticles for Melanoma Targeting and Drug Delivery. Small 13:|
|Le, Duong Q; Kuriakose, Aneetta E; Nguyen, Dat X et al. (2017) Hybrid Nitric Oxide Donor and its Carrier for the Treatment of Peripheral Arterial Diseases. Sci Rep 7:8692|
|Shan, Dingying; Zhang, Chenji; Kalaba, Surge et al. (2017) Flexible biodegradable citrate-based polymeric step-index optical fiber. Biomaterials 143:142-148|
|Xie, Zhiwei; Kim, Jimin P; Cai, Qing et al. (2017) Synthesis and characterization of citrate-based fluorescent small molecules and biodegradable polymers. Acta Biomater 50:361-369|
|Guo, Jinshan; Kim, Gloria B; Shan, Dingying et al. (2017) Click chemistry improved wet adhesion strength of mussel-inspired citrate-based antimicrobial bioadhesives. Biomaterials 112:275-286|
|Hu, Jianqing; Guo, Jinshan; Xie, Zhiwei et al. (2016) Fluorescence imaging enabled poly(lactide-co-glycolide). Acta Biomater 29:307-319|
Showing the most recent 10 out of 34 publications