Interleukin-13 receptor subunit alpha-2 (IL-13Rα2), also known as CD213A2 (cluster of differentiation 213A2), is a membrane bound protein that in humans is encoded by the IL13RA2 gene. IL-13Rα2 is closely related to IL-13Rα1, a subunit of the interleukin-13 receptor complex. This protein binds IL13 with high affinity, but lacks any significant cytoplasmic domain, and does not appear to function as a signal mediator. It is, however, able to regulate the effects of both IL-13 and IL-4, despite the fact it is unable to bind directly to the latter. It is also reported to play a role in the internalization of IL13. IL-13Rα2 has been found to be over-expressed in a variety of cancers, including pancreatic, ovarian, melanomas, and malignant gliomas.
Background References
1. Zeng J et al. IL13RA2 is overexpressed in malignant gliomas and related to clinical outcome of patients. Am J Transl Res. 2020 Aug
2. Wang M et al. Silencing of IL13RA2 promotes partial epithelial-mesenchymal transition in hepatocellular carcinoma via ERK signaling pathway activation. FEBS Open Bio. 2020 Feb
Western blot analysis of IL-13R alpha 2 on different lysates with Rabbit anti-IL-13R alpha 2 antibody (HA722051) at 1/2,000 dilution.
Lane 1: A375 cell lysate (no heat) Lane 2: U-937 cell lysate (no heat) (negative) Lane 3: Daudi cell lysate (negative)
Notice: no heat means the lysate is not boiled.
Lysates/proteins at 20 µg/Lane.
Predicted band size: 44 kDa Observed band size: 50-80 kDa
Exposure time: 25 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA722051) at 1/2,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Western blot analysis of IL-13R alpha 2 on U-87 MG cell lysates with Rabbit anti-IL-13R alpha 2 antibody (HA722051) at 1/2,000 dilution.
Lysates/proteins at 10 µg/Lane.
Predicted band size: 44 kDa Observed band size: 50-70 kDa
Exposure time: 3 minutes; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA722051) at 1/2,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Immunohistochemical analysis of paraffin-embedded human testis tissue with Rabbit anti-IL-13R alpha 2 antibody (HA722051) at 1/1,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA722051) at 1/1,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
☑ Relative expression (RE)
Flow cytometric analysis of A375 (positive) and U-937 (negative) cells labeling IL-13R alpha 2.
Cells were washed twice with cold PBS and resuspend. Then stained with the primary antibody (HA722051, 1μg/mL) (red) compared with Rabbit IgG Isotype Control (green). After incubation of the primary antibody at +4℃ for an hour, the cells were stained with a iFluor™ 488 conjugate-Goat anti-Rabbit IgG Secondary antibody (HA1121) at 1/1,000 dilution for 30 minutes at +4℃. Unlabelled sample was used as a control (cells without incubation with primary antibody; black).
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