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Recent advances in the imaging of programmed cell death
1Stanford University School of Medicine, Division of Pediatric Radiology, Lucile Salter Packard Children's Hospital, Clinic F, Rm # 1673, 725 Welch Road, Palo Alto, CA 94304, USA. blankenb@stanford.edu
Current Pharmaceutical Design
|May 12, 2004
Summary
Imaging programmed cell death (apoptosis) aids disease treatment and therapy monitoring. Current methods like radiolabeled annexin V show promise, but further research into uptake mechanisms and new imaging agents is needed.
Area of Science:
- Biomedical Imaging
- Molecular Biology
- Pathology
Background:
- Programmed cell death (apoptosis) dysregulation is central to autoimmune diseases, transplant rejection, and cancer.
- Effective imaging of apoptosis is crucial for developing targeted therapies and monitoring treatment efficacy.
Purpose of the Study:
- To review current and emerging imaging technologies for non-invasively monitoring cell death.
- To discuss the mechanisms of apoptosis and cellular stress.
- To explore novel strategies for therapeutic intervention in stressed or apoptotic tissues.
Main Methods:
- Review of existing literature on apoptosis imaging agents, including radiolabeled annexin V and Z-VAD.fmk.
- Discussion of Magnetic Resonance (MR) imaging techniques and tracers for apoptosis detection.
- Analysis of mechanisms underlying cellular stress and early apoptosis.
Main Results:
- Annexin V, labeled with technetium-99m, is a widely studied in vivo apoptosis imaging agent currently in clinical trials.
- The precise in vivo uptake mechanisms of annexin V require further investigation.
- Radiolabeled inhibitors like Z-VAD.fmk and MR imaging are promising alternative and complementary approaches.
Conclusions:
- Non-invasive imaging of apoptosis is vital for advancing treatments for various diseases.
- Continued research into imaging agent mechanisms and development of novel therapeutic strategies is essential for managing conditions involving cell death or stress.