Abstract
The development of stents has been a major advancement over balloon angioplasty, improving vessel revascularization in obstructive coronary artery disease. The development of drug-eluting stents (DES) was the next breakthrough, designed to prevent the development of neointimal hyperplasia (restenosis) following percutaneous coronary interventions (PCI). Several DES are currently in various stages of clinical development; these DES use different stent platforms, different antiproliferative drugs and different polymeric coatings that carry the drugs and control their delivery kinetics. Following DES implantation, when the entire drug is released, the polymeric coating is still retained on the stent and can influence subsequent tissue response and vascular healing. Therefore, the biocompatibility of the polymeric coatings is an important component of DES safety and needs to be thoroughly evaluated. Here we describe the development of a high throughput screening platform for the evaluation of polymer biocompatibility, assaying whether a polymeric coating triggers inflammation in vascular cells. The data generated by these assays provides a structure-activity relationship (SAR) that can guide polymer chemists in polymer design. We have also applied this methodology to evaluate the components of a novel polymer system (BioLinx polymer system) designed in-house. In addition, we assayed other polymeric coatings similar to those currently used on various DES. The results of this evaluation reveal a remarkable correlation between polymer hydrophobicity and its ability to provoke inflammatory response.
Combinatorial Chemistry & High Throughput Screening
Title: Novel High Throughput Polymer Biocompatibility Screening Designed for SAR (Structure-Activity Relationship): Application for Evaluating Polymer Coatings for Cardiovascular Drug-Eluting Stents
Volume: 12 Issue: 7
Author(s): Ayala Hezi-Yamit, Carol Sullivan, Jennifer Wong, Laura David, Mingfei Chen, Peiwen Cheng, David Shumaker, Josiah Wilcox and Kishore Udipi
Affiliation:
Abstract: The development of stents has been a major advancement over balloon angioplasty, improving vessel revascularization in obstructive coronary artery disease. The development of drug-eluting stents (DES) was the next breakthrough, designed to prevent the development of neointimal hyperplasia (restenosis) following percutaneous coronary interventions (PCI). Several DES are currently in various stages of clinical development; these DES use different stent platforms, different antiproliferative drugs and different polymeric coatings that carry the drugs and control their delivery kinetics. Following DES implantation, when the entire drug is released, the polymeric coating is still retained on the stent and can influence subsequent tissue response and vascular healing. Therefore, the biocompatibility of the polymeric coatings is an important component of DES safety and needs to be thoroughly evaluated. Here we describe the development of a high throughput screening platform for the evaluation of polymer biocompatibility, assaying whether a polymeric coating triggers inflammation in vascular cells. The data generated by these assays provides a structure-activity relationship (SAR) that can guide polymer chemists in polymer design. We have also applied this methodology to evaluate the components of a novel polymer system (BioLinx polymer system) designed in-house. In addition, we assayed other polymeric coatings similar to those currently used on various DES. The results of this evaluation reveal a remarkable correlation between polymer hydrophobicity and its ability to provoke inflammatory response.
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Cite this article as:
Hezi-Yamit Ayala, Sullivan Carol, Wong Jennifer, David Laura, Chen Mingfei, Cheng Peiwen, Shumaker David, Wilcox Josiah and Udipi Kishore, Novel High Throughput Polymer Biocompatibility Screening Designed for SAR (Structure-Activity Relationship): Application for Evaluating Polymer Coatings for Cardiovascular Drug-Eluting Stents, Combinatorial Chemistry & High Throughput Screening 2009; 12 (7) . https://dx.doi.org/10.2174/138620709788923674
DOI https://dx.doi.org/10.2174/138620709788923674 |
Print ISSN 1386-2073 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5402 |
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