Localized cell stimulation by nitric oxide using a photoactive porous coordination polymer platform

Area of Science:

• Biomaterials Science
• Chemical Biology
• Cellular Signaling

Background:

• Localized cell stimulation via small molecules offers control over cellular signaling networks.
• Precise spatial and temporal delivery of gaseous biomolecules like nitric oxide (NO) to single cells remains a significant challenge.

Purpose of the Study:

• To develop a spatiotemporally controllable platform for nitric oxide (NO) release at the single-cell level.
• To investigate the use of photoactive porous coordination polymers for localized NO delivery.

Main Methods:

• Synthesized photoactive porous coordination polymers by organizing less reactive molecules into polymer structures.
• Embedded photoactive polymer crystals within a biocompatible matrix.
• Utilized localized two-photon laser activation for precise NO release and delivery.

Main Results:

• Organizing molecules into polymer structures enhanced photoreactivity and allowed adjustable NO release via light irradiation.
• Achieved precisely controlled NO delivery to the cellular level using localized two-photon laser activation.
• Demonstrated biological relevance through observed intracellular calcium concentration changes mediated by NO.

Conclusions:

• Developed a novel synthetic strategy for spatiotemporally controllable nitric oxide-releasing platforms.
• Photoactive porous coordination polymers enable precise, light-activated NO delivery for cellular studies.
• This technology provides a powerful tool for investigating nitric oxide's role in cellular processes.