Details

Autor(en) / Beteiligte

• Roane, Brandon M
• Meza-Perez, Selene
• Katre, Ashwini A
• Goldsberry, Whitney N
• Randall, Troy D
• Norian, Lyse A
• Birrer, Michael J
• Arend, Rebecca C

Titel

Neutralization of TGFβ Improves Tumor Immunity and Reduces Tumor Progression in Ovarian Carcinoma

Ist Teil von

• Molecular cancer therapeutics, 2021-03, Vol.20 (3), p.602-611

Ort / Verlag

United States

Erscheinungsjahr

2021

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The immunosuppressive effects of TGFβ promotes tumor progression and diminishes response to therapy. In this study, we used ID8-p53 tumors as a murine model of high-grade serous ovarian cancer. An mAb targeting all three TGFβ ligands was used to neutralize TGFβ. Ascites and omentum were collected and changes in T-cell response were measured using flow. Treatment with anti-TGFβ therapy every other day following injection of tumor cells resulted in decreased ascites volume (4.1 mL vs. 0.7 mL; < 0.001) and improved the CD8:Treg ratio (0.37 vs. 2.5; = 0.02) compared with untreated mice. A single dose of therapy prior to tumor challenge resulted in a similar reduction of ascites volume (2.7 vs. 0.67 mL; = 0.002) and increased CD8:Tregs ratio (0.36 vs. 1.49; = 0.007), while also significantly reducing omental weight (114.9 mg vs. 93.4 mg; = 0.017). Beginning treatment before inoculation with tumor cells and continuing for 6 weeks, we observe similar changes and prolonged overall survival (median 70 days vs. 57.5 days). TGFβ neutralization results in favorable changes to the T-cell response within the tumor microenvironment, leading to decreased tumor progression in ovarian cancer. The utilization of anti-TGFβ therapy may be an option for management in patients with ovarian cancer to improve clinical outcomes and warrants further investigation.