Cthrc1 controls adipose tissue formation, body composition, and physical activity

Area of Science:

• Metabolic research
• Physiology
• Cell biology

Background:

• Cthrc1 (Collagen triple helix repeat containing 1) is a secreted protein.
• Its role in metabolic regulation and body composition is not fully understood.

Purpose of the Study:

• To investigate the physiological effects of Cthrc1 deficiency on adipogenesis, body composition, metabolism, physical activity, and muscle physiology.

Main Methods:

• Metabolic and activity monitoring in Cthrc1 null and wildtype mice.
• Grip strength tests and muscle myography.
• In vitro studies on adipocyte differentiation and reporter gene activity.

Main Results:

• Cthrc1 null mice exhibited reduced energy expenditure, decreased lean mass, and increased fat mass, particularly visceral fat.
• Cthrc1 inhibited adipocyte differentiation in vitro.
• Mice lacking Cthrc1 showed reduced physical activity and grip strength, with impaired muscle function.
• Cthrc1 was found in brain regions regulating metabolism and activity.

Conclusions:

• Cthrc1 plays a crucial role in regulating body composition by inhibiting adipogenesis.
• Central Cthrc1 may influence muscle function and physical activity levels.