ArticleCancer cell international2024
Synergistic effects of Smac mimetic APG-1387 with anti-PD-1 antibody are attributed to increased CD3 + NK1.1 + cell recruitment secondary to induction of cytokines from tumor cells.
Article in Cancer cell international, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03386526 (A Phase I Study of the Safety, Tolerability, Pharmacokinetic and Pharmacodynamic Properties of APG-1387 as a Single Agent or in Combination With Systemic Anti-Cancer Agents in Patients With Advanced Solid Tumors or Hematologic Malignancies), which is not on this map. Cited by 4 papers.
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A Phase I Study of the Safety, Tolerability, Pharmacokinetic and Pharmacodynamic Properties of APG-1387 as a Single Agent or in Combination With Systemic Anti-Cancer Agents in Patients With Advanced Solid Tumors or Hematologic Malignancies
Who cites it
4 citing papers in PubMed.
- Apoptosis signaling and cancer targeted therapy: from bench to bespoke.Translational cancer research · 2026Review
- IAPs in cancers: molecular mechanisms, clinical prognostic value, and translational therapeutic potential.Journal of translational medicine · 2026Review
- Ferroptosis, pyroptosis, and necroptosis in melanoma: regulatory cell death pathways and their implications for immunotherapy.Frontiers in oncology · 2026Review
- The reprogramming impact of SMAC-mimetic on glioblastoma stem cells and the immune tumor microenvironment evolution.Journal of experimental & clinical cancer research : CR · 2025Article
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15 authors.
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Abstract
backgroundImmune checkpoint inhibitors are approved for the treatment of various tumors, but the response rate is not satisfactory in certain malignancies. Inhibitor of apoptosis proteins (IAP) ubiquitin-E3 ligase activity is involved in the regulation of immune responses. APG-1387 is a novel second mitochondria-derived activator of caspase (Smac) mimetic IAP inhibitor. The aim of this study was to explore the synergistic effect of APG-1387 when combined with anti-PD-1 antibody in a preclinical setting.
methodsWe utilized syngeneic mouse models of ovarian cancer (ID8), colon cancer (MC38), malignant melanoma (B16), and liver cancer (Hepa1-6) to assess the combination effect of APG-1387 and anti-PD-1 antibody, including immune-related factors, tumor growth, and survival. MSD V-PLEX validated assays were used to measure in vitro and in vivo cytokine release.
resultsIn ID8 ovarian cancer and MC38 colon cancer models, APG-1387 and anti-PD1 antibody had synergistic antitumor effects. In the MC38 model, the combination of APG-1387 and anti-PD-1 antibody significantly inhibited tumor growth (P < 0.0001) and increased the survival rate of tumor-bearing animals (P < 0.001). Moreover, we found that APG-1387 upregulated tumor-infiltrating CD3 + NK1.1 + cells by nearly 2-fold, by promoting tumor cell secretion of IL-12. Blocking IL-12 secretion abrogated the synergistic effects of APG-1387 and anti-PD-1 antibody in both MC38 and ID8 models.
conclusionsAPG-1387 has the potential to turn "cold tumors" into hot ones by recruiting more CD3 + NK1.1 + cells into certain tumors. Based on these and other data, the safety and therapeutic effect of this combination will be investigated in a phase 1/2 trial in patients with advanced solid tumors or hematologic malignancies (NCT03386526).
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