Cyclin D3 and cyclin-dependent kinases 6(CDK6) are components of the core cell cycle machinery driving cell proliferation, and generally amplified in T acute lymphoblastic leukemia (T-ALL). The pro-survival function of cyclin D3/CDK6 in T-ALL cells via phosphorylating/inactivating PFKP and PKM2 (two key enzymes in glycolysis) is recently addressed. Targeting cyclin D3/CDK6 is a promising method for T-ALL therapy. As tumor microenvironment cell play critical roles in regulating tumor progression, it is critical/urgent to understand the functions of cyclin D3/CDK6 in tumor microenvironment cells. Our preliminary study showed that cyclin D3/CDK6 expression was significantly upregulated in T cells under activation condition. Ablation of cyclin D3 or CFK6 dramatically decreased regulatory T cell (Tregs) population without inducing cell apoptosis. Tregs promote tumor progression by inhibiting T help cells and CD8+ cytotoxic T cells. We therefore hypothesized that cyclin D3/CDK6 regulate T-ALL progression via T-ALL prosurvival and Tregs differentiation. This study will provide the rational to treat T-ALL by targeting cyclin D3/CDK6.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Exploratory Grants (P20)
Project #
5P20GM103542-10
Application #
10244667
Study Section
Special Emphasis Panel (ZGM1)
Program Officer
Gao, Hongwei
Project Start
2020-08-01
Project End
2021-07-31
Budget Start
2020-08-01
Budget End
2021-07-31
Support Year
10
Fiscal Year
2020
Total Cost
Indirect Cost
Name
Medical University of South Carolina
Department
Type
DUNS #
183710748
City
Charleston
State
SC
Country
United States
Zip Code
29407
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