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Optical and MRI Multimodal Tracing of Stem Cells In Vivo
Jia Yang1,2, Min Yan1,2, Zhong Wang3
1State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan 650500, China.
Abstract:
Stem cell therapy has shown great clinical potential in oncology, injury, inflammation, and cardiovascular disease. However, due to the technical limitations of the in vivo visualization of transplanted stem cells, the therapeutic mechanisms and biosafety of stem cells in vivo are poorly defined, which limits the speed of clinical translation. The commonly used methods for the in vivo tracing of stem cells currently include optical imaging, magnetic resonance imaging (MRI), and nuclear medicine imaging. However, nuclear medicine imaging involves radioactive materials, MRI has low resolution at the cellular level, and optical imaging has poor tissue penetration in vivo. It is difficult for a single imaging method to simultaneously achieve the high penetration, high resolution, and noninvasiveness needed for in vivo imaging. However, multimodal imaging combines the advantages of different imaging modalities to determine the fate of stem cells in vivo in a multidimensional way. This review provides an overview of various multimodal imaging technologies and labeling methods commonly used for tracing stem cells, including optical imaging, MRI, and the combination of the two, while explaining the principles involved, comparing the advantages and disadvantages of different combination schemes, and discussing the challenges and prospects of human stem cell tracking techniques.
Insights
Multimodal imaging enhances stem cell tracking for better understanding of therapeutic mechanisms and biosafety. This approach overcomes limitations of single imaging methods, accelerating clinical translation of stem cell therapies.
Area of Science:
- Regenerative Medicine
- Biomedical Imaging
- Cellular Biology
Background:
- Stem cell therapy shows promise across various diseases, but in vivo visualization challenges hinder understanding of mechanisms and safety.
- Current imaging methods like optical, MRI, and nuclear medicine have limitations in resolution, penetration, or invasiveness.
- Effective in vivo stem cell tracking is crucial for advancing clinical translation.
Purpose of the Study:
- To review multimodal imaging technologies for in vivo stem cell tracing.
- To compare different labeling methods and imaging combinations.
- To discuss challenges and future prospects in human stem cell tracking.
Main Methods:
- Overview of optical imaging, magnetic resonance imaging (MRI), and their combinations for stem cell tracking.
- Discussion of labeling strategies for enhancing signal detection.
- Comparative analysis of advantages and disadvantages of various multimodal approaches.
Main Results:
- Multimodal imaging offers a multidimensional approach to track stem cell fate in vivo.
- Combining modalities like optical imaging and MRI can overcome individual method limitations.
- Specific labeling techniques are essential for successful multimodal stem cell tracking.
Conclusions:
- Multimodal imaging is a powerful tool for overcoming the limitations of single imaging modalities in stem cell research.
- This approach is vital for elucidating stem cell therapeutic mechanisms and ensuring biosafety.
- Further development of multimodal imaging techniques holds significant potential for human stem cell therapies.
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