Selective Editing and Functionalization of the Mammalian Lipidome

Area of Science:

• Biochemistry
• Chemical Biology
• Cell Biology

Background:

• Lipids are diverse, but tools for selective manipulation in living cells are limited.
• Understanding lipid metabolism is crucial for cell function and disease research.

Purpose of the Study:

• To develop synthetic lipid analogs with programmable metabolic selectivity.
• To enable precise control and functionalization of specific lipid classes within living cells.

Main Methods:

• Designing synthetic lipid analogs where tail structure dictates metabolic fate.
• Utilizing bifunctional lipids for simultaneous metabolic control and bioorthogonal tagging.
• Applying the strategy for selective in situ labeling of distinct lipid pools.

Main Results:

• Demonstrated that lipid tail structure can program metabolic fate.
• Achieved selective cellular production of various lipid classes (neutral, phospholipids, sphingolipids, ether lipids) without genetic modification.
• Successfully performed in situ labeling of different lipid pools using bifunctional lipids.

Conclusions:

• Established a chemical biology strategy for precise modulation of the mammalian lipidome.
• The approach allows unprecedented control over lipid metabolism, functionalization, and rewiring.
• Opens new avenues for studying and manipulating cellular lipid profiles.