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Conducting Multiple Imaging Modes with One Fluorescence Microscope
Published on: October 28, 2018
Development and application of fluorescent SDF-1 derivatives
Ryo Masuda1, Shinya Oishi, Noriko Tanahara
1Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
Future Medicinal Chemistry
|May 11, 2012
Summary
Novel fluorescent probes targeting the SDF-1/CXCR4 pathway were developed. These probes enable detection of CXCR4 expression and identification of potential CXCR4 ligands for cell migration studies.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Stromal cell-derived factor-1 (SDF-1) and its receptor CXCR4 are crucial for directed cell migration in various physiological and pathological contexts.
- Understanding CXCR4 expression is vital for developing targeted therapies for conditions involving aberrant cell migration, such as cancer metastasis.
Purpose of the Study:
- To synthesize and characterize fluorescently labeled SDF-1 derivatives as potential probes for detecting CXCR4 expression.
- To develop novel assays for evaluating CXCR4-binding compounds using these fluorescent probes.
Main Methods:
- Structure-activity relationship (SAR) analyses were performed on fluorescent SDF-1 derivatives.
- Synthesis of SDF-1 derivatives with C-terminal modifications incorporating fluorophores like AlexaFluor® 488 and tetramethylrhodamine.
- Development of a binding inhibition assay for biological evaluation of CXCR4 ligands.
Main Results:
- Several SDF-1 derivatives with single fluorescent labels were successfully synthesized.
- C-terminally modified SDF-1 derivatives demonstrated potent binding to CXCR4.
- A novel binding inhibition assay was established using a potent fluorescent probe.
Conclusions:
- SDF-1 derivatives with C-terminal modifications exhibit equipotent binding to CXCR4 and CXCR7 compared to unlabeled SDF-1.
- These fluorescent SDF-1 derivatives are effective for detecting CXCR4 expression via flow cytometry.
- The developed probes facilitate the identification of novel binding compounds for CXCR4, aiding in the study of cell migration.
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