Ⅰ. Purpose and necessity of the research
- During the process of myocardial infarction, recruitment of inflammatory cells such as monocytes to the infarct site plays an important role, and the delivery of the cells to the tissue takes place via rol...
Ⅰ. Purpose and necessity of the research
- During the process of myocardial infarction, recruitment of inflammatory cells such as monocytes to the infarct site plays an important role, and the delivery of the cells to the tissue takes place via rolling, activation, adhesion, and diapedesis. Moreover, selectin (rolling), chemokine (activation), and integrin (adhesion) also play crucial roles between the inflammatory cells and endothelial cells.
- If one attempts to treat patients with myocardial infarction/heart failure using cell therapeutics like stem cells or immune cells, it is necessary to modify the therapeutic cells taking the recruitment mechanism of the inflammatory cells within the body into the account or to try the cell therapy after completing the evaluation of biomarker expression in vivo. Ⅱ. Contents and scope of the research Development of peptide probes/modulators for the evaluation of the expressions of the key biomarkers (selectin, chemokine, integrin) that are related to inflammation and healing in the cardiac diseases. Ⅲ. Results of the research
○ Molecular imaging using F-18 labeled radiopharmaceuticals in the models of myocardial infarction/ischemia-reperfusion injury/heart failure
- Imaging of myocardial infarction and apoptosis - Imaging of heart failure and sympathetic nervous system using F-18 fluoropropylbenzylguanidine (F-18 FPBG)
○ Development of novel peptides that are related with myocardial inflammation
- Development of a peptide targeting CCR2
- Set up of a condition of radioiodine labelling for the peptide
○ Molecular imaging under base of RGD peptide that binds to intergrin which plays a crucial role for angiogenesis.
- Labeling of Tc-99m to cyclic form RGD peptide
- Clincial study usign Tc-99m cRGD.
○ Establishment of infra for cell membrane engineering using E-selectin targeting peptide
- Set up of flow cytometry methodology for quantification of free amine and reduced thiol in the cell membrane
- Performing of experiment for cell membrane engineering in the condition of E-selectin expression
Ⅳ. Application plan of the research product
○ Comprehensive appreciation of the pathophysiology of intractable heart diseases
○ The vitalization of translational study from laboratory research to clinical trial