Real-Time Imaging of Dynamic Cell Reprogramming with Nanosensors

Area of Science:

• Biotechnology
• Cell Biology
• Molecular Medicine

Background:

• Cellular reprogramming is crucial for disease modeling, therapeutics, and drug discovery.
• Current molecular evaluation methods are disruptive and provide only static data.
• Existing live-cell methods using gene reporters are labor-intensive and risk genetic mutations.

Purpose of the Study:

• To develop a non-integrative nanosensor for in situ visualization of cellular reprogramming events.
• To enable real-time monitoring of dynamic changes during reprogramming within live cells.
• To provide a versatile tool for high-throughput assessment and optimization of reprogramming.

Main Methods:

• Utilized a non-integrative nanosensor system for sustained intracellular release of molecular probes.
• Monitored key reprogramming events including mesenchymal-epithelial transition and pluripotency acquisition.
• Tracked dynamic expression of pivotal biomarkers such as THY1, E-CADHERIN, OCT4, and GATA4 mRNA.

Main Results:

• Nanosensors successfully visualized mesenchymal-epithelial transition, pluripotency acquisition, and transdifferentiation.
• Nanosensor signals demonstrated high correlation (R² > 0.9) with polymerase chain reaction and gene reporter imaging.
• The system effectively monitored low-frequency reprogramming events in real-time.

Conclusions:

• The developed nanosensor offers a facile and versatile method for real-time monitoring of cellular reprogramming.
• This technology facilitates in situ visualization of dynamic reprogramming events within live cells.
• The nanosensor is valuable for high-throughput screening, optimization, and enrichment of specific cell populations.