Jan 23, 2020

CUE-101, a Novel E7-pHLA-IL2-Fc Fusion Protein, Enhances Tumor Antigen-Specific T-Cell Activation for the Treatment of HPV16-Driven Malignancies

Clinical Cancer Research : an Official Journal of the American Association for Cancer Research
Steven N QuayleMary Ellen Simcox

Abstract

To assess the potential for CUE-101, a novel therapeutic fusion protein, to selectively activate and expand HPV16 E711-20-specific CD8+ T cells as an off-the shelf therapy for the treatment of HPV16-driven tumors, including head and neck squamous cell carcinoma (HNSCC), cervical, and anal cancers. CUE-101 is an Fc fusion protein composed of a human leukocyte antigen (HLA) complex, an HPV16 E7 peptide epitope, reduced affinity human IL2 molecules, and an effector attenuated human IgG1 Fc domain. Human E7-specific T cells and human peripheral blood mononuclear cells (PBMC) were tested to demonstrate cellular activity and specificity of CUE-101, whereas in vivo activity of CUE-101 was assessed in HLA-A2 transgenic mice. Antitumor efficacy with a murine surrogate (mCUE-101) was tested in the TC-1 syngeneic tumor model. CUE-101 demonstrates selective binding, activation, and expansion of HPV16 E711-20-specific CD8+ T cells from PBMCs relative to nontarget cells. Intravenous administration of CUE-101 induced selective expansion of HPV16 E711-20-specific CD8+ T cells in HLA-A2 (AAD) transgenic mice, and anticancer efficacy and immunologic memory was demonstrated in TC-1 tumor-bearing mice treated with mCUE-101. Combination therapy wit...Continue Reading

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Mentioned in this Paper

Peripheral Blood
Histocompatibility Antigens Class I
Antineoplastic Agents
Interleukin-2
Malignant Neoplasms
In Vivo
Mice, Transgenic
Mononucleated Blood Cell
Phase I Clinical Trials
Binding (Molecular Function)

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