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Researchers at the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) have developed a novel imaging platform called CLEAR (Cleavable Light-Erased Antibody Reporter) technology. The innovation is expected to significantly improve protein visualization and spatial mapping inside biological samples.
About CLEAR Technology
CLEAR (Cleavable Light-Erased Antibody Reporter) is an advanced protein imaging platform developed by researchers at JNCASR, Bengaluru, with collaboration from the Indian Institute of Science (IISc).
The technology enables scientists to visualize and map a large number of proteins within the same biological sample using a single fluorescent marker. It addresses a major challenge in modern biological imaging known as spatial protein mapping.
How CLEAR Technology Works
CLEAR technology uses a special:
- Light-cleavable probe system
This system allows repeated cycles of:
- Protein labelling
- Imaging
- Signal removal
- Re-labelling
Mechanism
- Proteins in a cell are tagged with fluorescent probes.
- Scientists capture images of the proteins.
- The fluorescent signal is erased using a gentle 365 nm LED light pulse.
- A new set of proteins is then labelled and imaged in the same sample.
This cycle can be repeated multiple times within the same spectral window.
Key Features of CLEAR Technology
1. High Multiplexing Capability
The technology can visualize many proteins sequentially in the same sample without requiring multiple fluorescent colours.
This overcomes limitations of conventional imaging methods.
2. Single Fluorescent Marker Usage
Traditional imaging techniques require multiple fluorescent dyes.
CLEAR instead uses:
- One spectral window
- Repeated erase-and-reuse imaging cycles
This simplifies imaging and improves efficiency.
3. Light-Based Signal Erasure
The fluorescent signal can be gently removed using:
365 nm LED light
This process:
- Minimizes damage to cells
- Preserves sample quality
- Allows repeated imaging cycles
4. Compatibility with Delicate Samples
CLEAR works effectively with:
- Live cells
- Fragile tissues
- Complex biological systems
This makes it highly useful for biomedical research.
5. High Spatial Resolution
The technology generates highly detailed protein maps from:
- Single cells
- Tissue sections
- Immune cell systems
This improves understanding of cellular organization and interactions.
Significance of CLEAR Technology
1. Improved Disease Detection
CLEAR may help in:
- Early cancer detection
- Identification of neurological disorders
- Molecular-level disease analysis
Detailed protein mapping can reveal disease-related abnormalities at an early stage.
2. Better Understanding of Immune Responses
The technology helps scientists study:
- Immune cell interactions
- Cellular signalling pathways
- Behaviour of proteins inside cells
This is important for immunology and vaccine research.
3. Advancement in Precision Medicine
CLEAR can contribute to:
- Personalized medicine
- Targeted therapies
- Patient-specific treatment strategies
Detailed molecular analysis may allow doctors to design more precise treatments.
4. Scientific and Research Applications
Potential applications include:
- Cancer biology
- Neuroscience
- Drug development
- Cellular biology
- Molecular diagnostics
Advantages over Conventional Imaging Techniques
Compared to existing multiplex imaging methods, CLEAR offers:
- Faster imaging
- Higher multiplexing
- Better spatial resolution
- Lower cellular damage
- Compatibility with live cells
This makes it a major advancement in bioimaging technology.
Role of JNCASR
The Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) is an autonomous research institution under the Department of Science and Technology (DST), Government of India.
It conducts advanced interdisciplinary scientific research in:
- Materials science
- Biology
- Chemistry
- Nanotechnology
- Computational sciences
Conclusion
CLEAR technology represents a major breakthrough in biological imaging and protein mapping. By enabling repeated high-resolution imaging within the same biological sample, it can transform disease detection, biomedical research, and precision medicine. The innovation also highlights India’s growing capabilities in advanced scientific research and biotechnology.