Synthesis of functional protein in liposome

Area of Science:

• Biotechnology
• Biochemistry
• Materials Science

Background:

• Cell-free protein synthesis (CFPS) offers a versatile platform for protein production.
• Liposomes are widely used as drug delivery vehicles and for encapsulating biological components.
• Integrating CFPS within liposomes presents opportunities for localized protein production and advanced applications.

Purpose of the Study:

• To encapsulate a cell-free protein synthesis reaction mixture within liposomes.
• To confirm the successful synthesis and functionality of a protein produced inside liposomes.

Main Methods:

• Liposomes were formulated using eggPC, cholesterol, and DSPE-PEG5000 at a specific molar ratio (1.5:1:0.08).
• Cell-free protein synthesis reactions, including the production of a mutant green fluorescent protein, were entrapped within these liposomes.
• Fluorescence microscopy and flow cytometry were employed to detect and confirm protein synthesis.

Main Results:

• Successful encapsulation of the cell-free protein synthesis system within liposomes was achieved.
• The synthesis of a mutant green fluorescent protein within the liposomes was confirmed by detectable fluorescence.
• Analysis via flow cytometry and fluorescence microscopy indicated functional protein production.

Conclusions:

• Liposomes can effectively encapsulate cell-free protein synthesis reaction mixtures.
• Proteins synthesized within liposomes are functional, as demonstrated by the green fluorescent protein.
• This approach enables localized and contained protein production within liposomal nanostructures.