The MAGIC -based carrier delivered diverse bioactive proteins into mammalian cell cytosol while preserving function.
Evidence
This cellular delivery-platform experiment tested MAGIC with charged proteins and mammalian cell lines, reporting active β-Gal, HRP, trypsin, RNase A, and saporin delivery and about 40% lower cytotoxicity than Lipo8000 and TranEX.
Caveat
The evidence is limited to cell-line delivery and activity assays, so therapeutic performance and safety in living organisms remain untested in the abstract.
Simplified
BACKGROUND: Cytosolic protein delivery enables the direct transport of exogenous proteins into the cytoplasm, offering a powerful approach for precise regulation of intracellular activities. This strategy facilitates the investigation of complex physiological processes in cellular and molecular biology and supports the development of protein-based biotechnologies and precision therapeutics, such as targeted protein supplementation for cellular repair or modulation of aberrant cellular functions. However, current delivery methods face some challenges, including cytotoxicity, immune activation, and the difficulty of maintaining protein stability and activity during transport.
METHODS: Here, we report a novel (Aggregation-induced emission luminogen) -based carrier, MTPABP-Guided-Intracellular-Carrier (MAGIC), that achieves high efficiency in delivering native proteins into the cytosol. MAGIC is capable of binding both negatively and positively charged proteins and mediates their intracellular transport via clathrin-mediated uptake with endosomal escape.
RESULTS: Notably, the β-Gal and HRP proteins delivered by MAGIC maintain their biological activity after delivery, and the cytotoxicity of MAGIC is approximately 40% lower than that of Lipo8000 and TranEX. MAGIC efficiently delivered trypsin, RNase A, and saporin into the cytosol of mammalian cell lines while preserving their enzymatic or functional activity.
CONCLUSION: This rationally designed AIEgen-based platform provides a versatile and efficient solution for cytosolic protein delivery. The MAGIC delivery system holds significant promise for advancing the study of cellular physiology and enabling precise therapeutic interventions.
Key numbers
40%
Cytotoxicity Reduction
MAGIC's cytotoxicity compared to Lipo8000 and TranEX.
60%
Enzymatic Activity Preservation
Percentage of β-Gal activity maintained after delivery via MAGIC.
Full Text
We can’t show the full text here under this license.
