Virus-based delivery eased obesity or osteoporosis in mice
Virus-based supplementation of a stem-cell regulator eased obesity, osteoporosis or both across three mouse models.
Limit: Dosing was preventive; effects on established obesity were not measured
Edited by Boris Djordjevic · AgingResearch.News
In mouse experiments, researchers studied ITGBL1, a protein that helps regulate whether stem cells develop into fat or bone cells. These stem cells had lower ITGBL1 levels in mouse models of high-fat-diet-induced obesity and osteoporosis caused by ovary removal.
In cell experiments, ITGBL1 deficiency favored fat-cell development and impaired bone-cell development. The researchers reported that ITGBL1 promoted the breakdown of PPARγ, a protein that switches on genes involved in fat-cell development. They also used a virus-based method to supplement ITGBL1 in mice fed a high-fat diet, mice with ovaries removed and mice lacking ITGBL1 throughout the body. Supplementation eased obesity, osteoporosis or both across these mouse models.
Why it matters
Osteoporosis is an age-related disease involving impaired bone maintenance. The authors identify ITGBL1 as a potential target for preventing and treating obesity and osteoporosis.
Caveats
Mouse and cell experiments do not establish whether ITGBL1 supplementation would benefit people. The abstract does not report effect sizes or the dose and duration of supplementation.
From the paper
- Limitation
Although our ex vivo experiments in primary ADMSCs/BMSCs and precursor cell lines support the key role of ITGBL1 in regulating mesenchymal lineage commitment and show that AAV9-mediated ITGBL1 supplementation significantly alleviates obesity and/or osteoporosis in HFD-fed mice …
Quoted word for word from the full text on nature.com.
The paper
Tianjin Medical University Cancer Institute and Hospital
Cell Death & Disease, Sep 2, 2026, Open access
