The TICE Pathway: Mechanisms and Potential Clinical Applications

Area of Science:

• Biochemistry
• Physiology
• Molecular Biology

Background:

• Cholesterol homeostasis is crucial for preventing cardiovascular, stroke, and neurodegenerative diseases.
• The transintestinal cholesterol excretion (TICE) pathway is a significant non-biliary route for cholesterol elimination.
• TICE plays a key role in reverse cholesterol transport, complementing the hepatobiliary pathway.

Purpose of the Study:

• To review recent research progress on the transintestinal cholesterol excretion (TICE) pathway.
• To explore the discovery, molecular mechanisms, and clinical applications of TICE.
• To highlight TICE as a potential therapeutic target for cholesterol management.

Main Methods:

• Review of recent scientific literature on TICE.
• Analysis of molecular mechanisms regulating intestinal cholesterol secretion.
• Investigation of nuclear receptor roles (FXR, LXR) in TICE.
• Consideration of nutrient and gut microbiota influences on TICE.

Main Results:

• Nuclear receptors like FXR and LXR, activated by specific ligands, promote intestinal cholesterol secretion via ABCG5/G8.
• Nutrient regulators and intestinal flora modulate cholesterol secretion through the TICE pathway.
• TICE facilitates direct elimination of plasma cholesterol, offering therapeutic potential.

Conclusions:

• The TICE pathway represents a significant mechanism for cholesterol homeostasis.
• Targeting TICE could offer novel therapeutic strategies for reducing cardiovascular disease risk.
• Further research into TICE mechanisms and modulators is warranted for clinical application.