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Updated: May 13, 2026

Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
Published on: September 19, 2018
Establishing the role of tyrosine kinase 2 in cancer
Caroline Ubel1, Stephanie Mousset, Denis Trufa
1Laboratory of Cellular and Molecular Lung Immunology; Institute of Molecular Pneumology; University of Erlangen-Nürnberg, Erlangen, Germany.
Abstract:
Tyrosine kinase 2 (TYK2) is a member of the Janus family of non-receptor tyrosine kinases involved in cytokine signaling. TYK2 deficiency is associated with increased susceptibility to mycobacterial and viral infections, hyper IgE syndrome as well as with allergic asthma. However the precise role of TYK2 in oncogenesis and tumor progression is not clear yet. Tyk2-deficient mice are prone to develop tumors because they lack efficient cytotoxic CD8+ T-cell antitumor responses as a result of deficient Type I interferon signaling. However, as TYK2 functions downstream of growth factor receptors that are often hyperactivated in cancer, inhibiting TYK2 might also have beneficial effects for cancer treatment.
Insights
Tyrosine kinase 2 (TYK2) deficiency impairs anti-tumor immunity, increasing cancer susceptibility. However, inhibiting TYK2 may offer therapeutic benefits in cancer treatment due to its role in growth factor signaling.
Area of Science:
- Immunology
- Oncology
- Molecular Biology
Background:
- Tyrosine kinase 2 (TYK2) is crucial for cytokine signaling.
- TYK2 deficiency is linked to infections, hyper IgE syndrome, and asthma.
- The role of TYK2 in cancer development and progression remains unclear.
Purpose of the Study:
- To investigate the precise role of TYK2 in oncogenesis and tumor progression.
- To explore the dual role of TYK2 in anti-tumor immunity and cancer signaling pathways.
Main Methods:
- Analysis of tumor development in Tyk2-deficient mice.
- Assessment of cytotoxic CD8+ T-cell responses.
- Evaluation of Type I interferon signaling pathways.
- Investigation of TYK2's downstream signaling from growth factor receptors.
Main Results:
- Tyk2-deficient mice exhibit impaired cytotoxic CD8+ T-cell antitumor responses.
- This impairment is attributed to deficient Type I interferon signaling.
- Mice lacking TYK2 show increased susceptibility to tumor development.
- TYK2 acts downstream of hyperactivated growth factor receptors common in cancer.
Conclusions:
- TYK2 plays a critical role in maintaining anti-tumor immune surveillance.
- Deficiency in TYK2 compromises the immune system's ability to fight tumors.
- Targeting TYK2 may represent a novel therapeutic strategy for cancer treatment.
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