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Published on: May 3, 2021
IL-11Rα: a novel target for the treatment of osteosarcoma
1Department of Orthopaedic Oncology, MD Anderson Cancer Center, 301402, Unit 1448, Houston, TX, 77230-1402, USA, volewis@mdanderson.org.
Abstract:
Recent advances have shown that cell surface receptors are expressed differentially in normal and pathological conditions. Novel organ specific and disease specific proteins expressed on tumor vasculature have been identified by in vivo phage display technology and the diversity of the tumor-associated vasculature has provided the basis for the development of targeted therapeutics. Investigators recently screened a phage display library in a human cancer patient. An IL-11 mimic phage displaying the cyclic peptide CGRRAGGSC (single letter amino acid code) specifically bound to immobilized IL-11Rα. It has been demonstrated that the expression of the IL-11Rα is increased in several other types of tumors including osteosarcoma. The ability to selectively target the IL-11Rα may provide an alternative treatment of for a disease where new treatment options are truly needed.
Insights
Researchers identified a novel phage that targets Interleukin-11 receptor alpha (IL-11Rα), which is overexpressed in osteosarcoma and other tumors. This discovery offers a potential new therapeutic strategy for cancers lacking effective treatment options.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Cell surface receptor expression varies between normal and pathological states.
- Tumor vasculature presents unique targets for novel therapeutics.
- Interleukin-11 receptor alpha (IL-11Rα) is implicated in various tumor types.
Purpose of the Study:
- To identify novel therapeutic targets in cancer.
- To develop targeted therapies against tumor-specific proteins.
- To investigate the potential of targeting IL-11Rα for cancer treatment.
Main Methods:
- In vivo phage display technology was employed to screen for tumor-specific targets.
- A phage library was screened in a human cancer patient.
- Phage displaying a cyclic peptide (CGRRAGGSC) was identified for its specific binding to IL-11Rα.
Main Results:
- A phage displaying the cyclic peptide CGRRAGGSC specifically bound to immobilized IL-11Rα.
- IL-11Rα expression is elevated in osteosarcoma and other cancers.
- The identified phage represents a potential tool for targeting IL-11Rα.
Conclusions:
- Targeting IL-11Rα, which is overexpressed in several tumors, presents a promising therapeutic avenue.
- The IL-11 mimic phage offers a novel approach for targeted cancer therapy.
- This strategy may provide new treatment options for diseases with limited therapeutic alternatives.
