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Updated: Jun 17, 2026

A Preclinical Mouse Model of Osteosarcoma to Define the Extracellular Vesicle-mediated Communication Between Tumor and Mesenchymal Stem Cells
Published on: May 6, 2018
IL-13Rα2 Is Involved in Resistance to Doxorubicin and Survival of Osteosarcoma Patients
Maryam Karamikheirabad1, Junyue Zhang1, Ae-Ri Ahn1
1Department of Pathology, Medical School, Jeonbuk National University, Jeonju 54896, Republic of Korea.
Background/Objectives:
Interleukin 13 receptor alpha 2 (IL-13Rα2) is a receptor with a high affinity for IL-13 and is involved in the progression of human cancers. However, studies on the role of IL-13Rα2 in osteosarcoma are limited. Therefore, this study aimed to investigate the expression and roles of IL-13Rα2 in the progression of osteosarcoma.
Methods:
This study evaluated the roles of IL-13Rα2 in osteosarcomas by evaluating tumor tissues from 37 human osteosarcomas and osteosarcoma cells.
Results:
Immunohistochemical positivity of IL-13Rα2 was an independent indicator of shorter overall survival and relapse-free survival of 37 osteosarcoma patients and 26 subpopulations of patients who received adjuvant chemotherapy with multivariate analysis. In U2OS and KHOS/NP osteosarcoma cells, overexpression of IL-13Rα2 significantly increased proliferation, migration, and invasion of cells, all of which decreased with knockdown of IL-13Rα2. Overexpression of IL-13Rα2 increased expression of TGF-β, snail, cyclin D1, and BCL2 but decreased BAX, and knockdown of IL-13Rα2 caused a decrease in expression of these molecules. In addition, both in vitro and in vivo, proliferation of osteosarcoma cells increased, and apoptosis decreased with overexpression of IL-13Rα2 under treatment with doxorubicin. Knockdown of IL-13Rα2 sensitized osteosarcoma cells to the cytotoxic effect of doxorubicin.
Conclusions:
The results of this study suggest that the expression of IL13Rα2 might be used as a potential prognostic indicator in osteosarcoma patients. Furthermore, it is observed that IL13Rα2 influences the resistance to the chemotherapeutic agent doxorubicin. Therefore, a therapeutic trial targeting IL13Rα2 might be a new therapeutic strategy for osteosarcoma, especially those highly expressing IL13Rα2.
Insights
Interleukin 13 receptor alpha 2 (IL-13Rα2) expression predicts poorer outcomes in osteosarcoma. Targeting IL-13Rα2 may improve chemotherapy response and offer a new therapeutic strategy for this cancer.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Interleukin 13 receptor alpha 2 (IL-13Rα2) is implicated in human cancer progression.
- Limited research exists on IL-13Rα2's role in osteosarcoma.
Purpose of the Study:
- To investigate the expression and functional roles of IL-13Rα2 in osteosarcoma progression.
Main Methods:
- Evaluated IL-13Rα2 expression in 37 human osteosarcoma tissues and cell lines.
- Assessed the impact of IL-13Rα2 overexpression and knockdown on cell proliferation, migration, invasion, and apoptosis.
- Analyzed molecular changes including TGF-β, snail, cyclin D1, BCL2, and BAX expression.
- Investigated IL-13Rα2's effect on doxorubicin sensitivity in vitro and in vivo.
Main Results:
- IL-13Rα2 positivity correlated with shorter overall and relapse-free survival in osteosarcoma patients.
- Overexpression of IL-13Rα2 enhanced osteosarcoma cell proliferation, migration, and invasion, while knockdown reduced these effects.
- IL-13Rα2 modulated key proteins involved in cell growth and apoptosis, and influenced doxorubicin resistance.
Conclusions:
- IL-13Rα2 expression serves as a potential prognostic biomarker for osteosarcoma.
- IL-13Rα2 impacts osteosarcoma cell behavior and resistance to doxorubicin.
- Targeting IL-13Rα2 presents a promising therapeutic strategy for osteosarcoma.
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