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Transition Metal Ru(II) Catalysts Immobilized Nanoreactors for Conditional Bioorthogonal Catalysis in Cells
Zhiguo Gao1, Yaojia Li2, Jiaqi Xing1
1State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, China.
ACS Applied Materials & Interfaces
|March 23, 2024
Summary
This study introduces a novel mesoporous organosilica nanoscaffold (RuMSN) for selective bioorthogonal catalysis. The engineered nanoreactor enables conditional activation of prodrugs and pro-fluorophores within biological systems.
Area of Science:
- Chemical Biology
- Materials Science
- Nanotechnology
Background:
- Conditional bioorthogonal catalysis using transition metal catalysts (TMCs) is challenging.
- Existing methods lack selectivity and control in biological environments.
Purpose of the Study:
- To develop an engineered nanoscaffold for selective and conditional bioorthogonal catalysis.
- To enable spatiotemporal control over prodrug and pro-fluorophore activation.
Main Methods:
- Utilized a mesoporous organosilica nanoscaffold (RuMSN) to immobilize Ruthenium(II) conjugates.
- Engineered RuMSN with adjustable surface charges and pore diameters for substrate selectivity.
- Investigated bioorthogonal photoreduction of azide groups within the nanoreactor.
Main Results:
- RuMSN demonstrated efficient and selective bioorthogonal catalysis.
- The nanoreactor facilitated conditional activation of prodrugs and pro-fluorophores.
- Showcased applications in intracellular and extracellular catalysis, including concurrent and tandem reactions with enzymes.
Conclusions:
- Engineered RuMSN nanoreactors offer a versatile platform for selective bioorthogonal chemistry.
- This approach enables precise control over therapeutic and imaging agent activation in biological systems.
- The nanoscaffold design allows for tailored interactions with substrates, enhancing catalytic efficiency and specificity.
