Blocking αvβ8 to Reverse Immunosuppression in Tumors
Author Information
Author(s): Guo Cuicui, Sun Hui, Du Yulei, Dai Xiaodong, Pang Yu, Han Zhen, Xiong Xinhui, Li Shaowei, Zhang Junhua, Zheng Qingbing, Gui Xun
Primary Institution: Mabwell (Shanghai) Bioscience Co., Ltd, Shanghai, China
Hypothesis
Can blocking αvβ8-mediated TGF-β signaling enhance anti-tumor immunity?
Conclusion
Targeting αvβ8 with a blocking antibody significantly inhibits tumor growth by enhancing immune cell infiltration and modulating macrophage polarization.
Supporting Evidence
- Integrin αvβ8 is expressed in certain tumor types and tumor-infiltrating macrophages.
- The specific αvβ8 antibody 130H2 demonstrated high affinity and blocking potency.
- Combining the antibody with PD-1 inhibition produced a synergistic anti-tumor effect.
- Blocking αvβ8 significantly increased immune cell infiltration in tumors.
- Pharmacokinetic studies showed favorable properties in cynomolgus monkeys.
Takeaway
This study shows that a special antibody can help the immune system fight tumors better by changing how certain immune cells work.
Methodology
Single-cell RNA sequencing was used to analyze αvβ8 expression, and an anti-αvβ8 antibody was developed and tested in vitro and in mouse models.
Participant Demographics
Ten male patients aged 50 to 75 with kidney renal clear cell carcinoma.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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