Programming megakaryocytes to produce engineered platelets for delivering non-native proteins

Area of Science:

• Biotechnology and Regenerative Medicine
• Cell Biology and Hematology

Background:

• Platelets are anucleate cells containing secretory granules crucial for physiological protein release.
• Cell engineering offers potential for platelets to deliver therapeutic non-native proteins.

Purpose of the Study:

• To develop a strategy for generating engineered mouse platelets from pluripotent stem cells.
• To demonstrate the potential of these engineered platelets as bioengineered protein delivery platforms.

Main Methods:

• Modification of megakaryocytes, the progenitor cells of platelets.
• Generation of mouse platelets from pluripotent stem cells.
• Engineering platelets for packaging and delivering non-native proteins.

Main Results:

• Successfully generated engineered mouse platelets capable of packaging and delivering non-native proteins.
• Demonstrated that engineered platelets can release non-native proteins in a controlled manner upon activation.
• Showcased the ability of engineered platelets to deliver active enzymes for genetic alteration of recipient cells.

Conclusions:

• Engineered platelets provide a flexible platform for controlled delivery of non-native proteins.
• Platelets are a promising tool for protein delivery in cell therapy applications.
• This approach enables therapeutic applications such as targeted enzyme delivery and cell modification.