Synthetic Engineering of Cortical Polarity During Mitosis Using Designed Proteins

Area of Science:

• Cell Biology
• Developmental Biology
• Biochemistry

Background:

• Asymmetric cell division is crucial for generating cell diversity during development and maintaining tissue homeostasis.
• Cortical polarity cues direct microtubule cytoskeleton polarization, ensuring daughter cells acquire distinct fates.
• The molecular mechanisms governing mammalian asymmetric cell division remain incompletely understood.

Purpose of the Study:

• To develop a high-throughput assay for investigating the molecular mechanisms of mammalian asymmetric cell division.
• To enable the study of virtually any protein of interest in the context of cortical polarity.
• To overcome limitations in current methods for studying these processes in mammalian cells.

Main Methods:

• Engineered cortical polarity using protein design in unpolarized mammalian culture cells.
• Developed a novel assay for high-throughput analysis of asymmetric cell division.
• Utilized advanced protein engineering techniques to control cellular organization.

Main Results:

• Successfully engineered cortical polarity for diverse proteins of interest in mammalian cells.
• Demonstrated the utility of the assay for studying asymmetric cell division mechanisms.
• Provided a new tool for high-throughput investigation of cell fate determination.

Conclusions:

• The developed assay offers a powerful platform for dissecting the molecular underpinnings of mammalian asymmetric cell division.
• Protein design-based cortical polarity engineering is a viable strategy for studying cell fate.
• This work facilitates future research into development, regeneration, and disease.