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| Content Provider | PubMed Central |
|---|---|
| Author | Herbst, Stephanie M. Klegerman, Melvin E. Kim, Hyunggun Qu, Jiangbo Shelat, Harnath Michael, Wassler Moody, Melanie R. Yang, Chen-min Ge, Xinyi Zou, Yuejiao Kopechek, Jonathan A. Clubb, Fred J. Kraemer, Duane C. Huang, Shaoling Holland, Christy K. Mcpherson, David D. Geng, Yong-jian |
| Abstract | In atherosclerosis, the loss of vascular stem cells via apoptosis impairs the capacity of the vascular wall to repair or regenerate the tissue damaged by atherogenic factors. Recruitment of exogenous stem cells to the plaque tissue may repopulate vascular cells and help repair the arterial tissue. Ultrasound-enhanced liposomal targeting may provide a feasible method for stem cell delivery into atheroma. Bifunctional echogenic immunoliposomes (BF-ELIP) were generated by covalently coupling two antibodies to liposomes; the first one specific for CD34 antigens on the surface of stem cells and the second directed against the intercellular adhesion molecule-1 (ICAM-1) antigens on the inflammatory endothelium covering atheroma. CD34+ stem cells from adult bone marrow were incubated on the ICAM-1-expressing endothelium of the aorta of swine fed high cholesterol diets, which was preloaded with BF-ELIP. Significantly increased stem cell adherence and penetration were detected, in particular in the aortic segments treated with 1 MHz low-amplitude continuous wave ultrasound. Fluorescence and scanning electron microscopy confirmed the presence of BF-ELIP-bound CD34+ cells in the intimal compartment of the atheromatous arterial wall. Ultrasound treatment increased the number of endothelial cell progenitors migrating into the intima. Thus, under ultrasound enhancement, BF-ELIP bound CD34+ stem cells selectively bind to the ICAM-1 expressing endothelium of atherosclerotic lesions. |
| Related Links | http://dx.doi.org/10.1021/mp900116r |
| Starting Page | 3 |
| File Format | |
| ISSN | 15438384 |
| e-ISSN | 15438392 |
| Journal | Molecular pharmaceutics |
| Issue Number | 1 |
| Volume Number | 7 |
| Language | English |
| Publisher Date | 2010-02-01 |
| Access Restriction | Open |
| Subject Keyword | Molecular Medicine Drug Discovery Pharmaceutical Science Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Drug Discovery Molecular Medicine Pharmaceutical Science |
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