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Recent Advances in IL-13Rα2-Directed Cancer Immunotherapy

Karin M Knudson1, SuJin Hwang1, Mondona S McCann1

  • 1Tumor Vaccines and Biotechnology Branch, Division of Cellular and Gene Therapies, Office of Tissues and Advanced Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD, United States.

Frontiers in Immunology
|April 25, 2022
PubMed

Insights

Interleukin-13 receptor alpha-2 (IL-13Rα2) is overexpressed in many solid tumors and promotes cancer progression. Targeting IL-13Rα2 with immunotherapies like CAR T cells shows promise for improving cancer treatment efficacy.

Area of Science:

  • Oncology
  • Immunology
  • Molecular Biology

Background:

  • Interleukin-13 receptor subunit alpha-2 (IL-13Rα2) is a high-affinity receptor for the anti-inflammatory cytokine IL-13.
  • IL-13Rα2 is overexpressed in various solid tumors, including glioblastoma, colorectal, adrenocortical, pancreatic, and breast cancers, correlating with poor prognosis.
  • Contrary to previous hypotheses, IL-13 can signal through IL-13Rα2 in human cells, promoting tumor proliferation, survival, invasion, and metastasis.

Purpose of the Study:

  • To review recent developments in IL-13Rα2-targeted cancer therapies.
  • To discuss strategies for enhancing the efficacy of IL-13Rα2-directed cancer treatments.

Main Methods:

  • Review of pre-clinical and clinical studies on IL-13Rα2-targeted therapies.
  • Analysis of emerging therapeutic strategies including immunotoxins, cancer vaccines, and chimeric antigen receptor (CAR) T cells.

Main Results:

  • IL-13Rα2 is a viable immunotherapy target due to its differential expression in tumor versus normal tissues.
  • Multiple therapeutic strategies targeting IL-13Rα2 have shown promise in pre-clinical and clinical studies.
  • IL-13Rα2-mediated signaling contributes to tumor progression and metastasis.

Conclusions:

  • IL-13Rα2 represents an attractive target for cancer immunotherapy.
  • Further research into IL-13Rα2-targeted therapies may lead to improved cancer treatment outcomes.
  • Strategies to enhance IL-13Rα2-directed treatment efficacy are under active investigation.
Keywords:
CAR (chimeric antigen receptor) T cellsIL-13Rα2gliobastoma (GBM)immunotoxininterleukin 13 receptor α2

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