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Shoubing Zhou, Wenyu Li, Dan Zhao, Qiujun Zhang, Hu Liu, Tengchuan Jin, Yueyin Pan. Synergistic approach to combating triple-negative breast cancer: ddr1-targeted antibody-drug conjugate combined with pembrolizumab[J]. Journal of Pharmaceutical Analysis. doi: 10.1016/j.jpha.2024.101100
Citation: Shoubing Zhou, Wenyu Li, Dan Zhao, Qiujun Zhang, Hu Liu, Tengchuan Jin, Yueyin Pan. Synergistic approach to combating triple-negative breast cancer: ddr1-targeted antibody-drug conjugate combined with pembrolizumab[J]. Journal of Pharmaceutical Analysis. doi: 10.1016/j.jpha.2024.101100

Synergistic approach to combating triple-negative breast cancer: ddr1-targeted antibody-drug conjugate combined with pembrolizumab

doi: 10.1016/j.jpha.2024.101100
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This work was supported by Anhui Province Clinical Key Specialty Construction Project, China (Grant No.: 2021sjlczdzk), the National Key Research and Development Program of China (Grants Nos.: 2022YFC2304102 and 2022YFC2303300), and the National Natural Science Foundation of China (Grant Nos.: 82272301, 32100745, and 31971129).

  • Received Date: Jun. 15, 2024
  • Rev Recd Date: Aug. 23, 2024
  • Available Online: Sep. 19, 2024
  • Discoidin domain receptor 1 (DDR1) is overexpressed in various tumors, such as triple-negative breast cancer (TNBC), and is rarely expressed in normal tissues. These characteristics make DDR1 a preferable target candidate for the construction of an antibody‒drug conjugate (ADC) for targeted therapy. Here, we investigated the preparation and preclinical efficacy of DDR1-DX8951, an ADC that includes an antiDDR1 monoclonal antibody conjugated to DX8951 by a cleavable GGFG linker. The anti-DDR1 monoclonal antibody was coupled to DX8951, producing the targeted therapy ADC, DDR1-DX8951. The antitumor activities of DDR1-DX8951 monotherapy or DDR1-DX8951 plus pembrolizumab were assessed in TNBC mouse models. DDR1-DX8951 can specifically target DDR1, be quickly internalized by TNBC cells, and reduce the viability of TNBC cells in vitro. The potent antitumor activity of DDR1-DX8951 was revealed in TNBC xenograft models. Importantly, our investigation demonstrated that DDR1-DX8951 plus pembrolizumab not only revealed the inhibitory efficacy on tumor growth and metastasis but also played an important role in improving the immunosuppressive tumor microenvironment of TNBC. Taken together, this investigation provides justification for large-sample studies to further assess the safety and efficacy of DDR1-DX8951 plus pembrolizumab for TNBC clinical trials.
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