New Study Reveals Mechanism Behind [Topic of Study]

ELF-CHECK (HARD STOP) – Facts from the provided text:

Here’s a breakdown of the key facts presented in the text, formatted for clarity:

1. Study & Researchers:

* A new study was conducted by the Yale School of Medicine and published in Pnas.
* The research team was led by Rachel Perry from Yale University’s Department of Cellular and Molecular Physiology.

2. Experimental Setup:

* 18 mice with breast cancer cells were used in the study.
* Some mice were made obese through their diet (obesity is known to accelerate tumor progression).
* Half of the mice had access to an exercise wheel and could run at will.

3. Key Findings – Tumor Size:

* Physically active, obese mice had tumors approximately 60% smaller than sedentary obese mice.
* Even compared to non-obese, sedentary mice, the exercised mice had slightly smaller tumors.

4. Metabolic Changes:

* Exercise increased glucose consumption by skeletal and cardiac muscles.
* Exercise decreased glucose absorption by tumors.
* Muscles prioritize glucose uptake during exercise, effectively “starving” the tumor.

5. genetic/Protein Changes:

* 417 genes showed altered expression after exercise, impacting energy metabolism pathways.
* A significant decrease in mTOR expression was observed in tumor cells.
* Reduced mTOR suggests the tumor enters a state less favorable for growth/proliferation.

6.Cancer Cell Fuel:

* Cancer cells rely on glucose for growth.

Critically importent note: This facts is based solely on the provided text. It represents the findings of this specific study and doesn’t encompass all research on cancer and exercise.