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Cellular superresolved imaging of multiple markers using temporally flickering nanoparticles
Tali Ilovitsh1, Yossef Danan1, Rinat Meir1
11] Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel [2] The Bar-Ilan Institute of Nanotechnology &Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel.
Scientific Reports
|May 29, 2015
Summary
This study introduces a novel lock-in detection technique for simultaneously imaging multiple types of gold nanoparticles (GNPs) in biological samples. The method allows for super-resolved spatial separation of different GNP species, aiding intracellular studies.
Area of Science:
- Nanotechnology and Biomedical Imaging
- Optical Microscopy and Spectroscopy
Background:
- Simultaneous detection and imaging of multiple nanoparticle types in biological systems is challenging.
- Existing methods often lack the resolution or specificity required for complex cellular environments.
- Understanding intracellular trafficking requires tools capable of distinguishing and tracking different molecular labels.
Purpose of the Study:
- To develop a technique for simultaneous detection and super-resolved imaging of multiple gold nanoparticle (GNP) species.
- To enable spatial separation of different GNP types within a single biological sample.
- To provide a tool for studying intracellular trafficking pathways in living cells with enhanced specificity.
Main Methods:
- Utilizes lock-in detection principles combined with multiple modulated laser beams, each corresponding to a specific GNP species.
- Images biological samples labeled with different GNP types using the distinct laser modulations.
- Employs computational methods to process the acquired data and achieve spatial separation of the GNPs.
Main Results:
- Achieved simultaneous super-resolved imaging of distinct areas within a biological sample.
- Demonstrated successful spatial separation of different GNP species at sub-diffraction distances.
- Validated the capability to differentiate and localize multiple GNP types within the same sample.
Conclusions:
- The proposed lock-in detection technique offers a powerful new approach for multiplexed nanoparticle imaging.
- This method significantly enhances the ability to study complex biological processes like intracellular trafficking.
- The technique provides a valuable tool for high-resolution, multi-label imaging in live-cell studies.
