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Updated: Jun 18, 2025

Pre-clinical Evaluation of Tyrosine Kinase Inhibitors for Treatment of Acute Leukemia
Published on: September 18, 2013
Spleen tyrosine kinase (SYK): an emerging target for the assemblage of small molecule antitumor agents
Charanjit Kaur1, Amandeep Thakur2, Ke-Chi Liou2
1School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India.
Introduction:
Spleen tyrosine kinase (SYK), a nonreceptor tyrosine kinase, has emerged as a vital component in the complex symphony of cancer cell survival and division. SYK activation (constitutive) is documented in various B-cell malignancies, and its inhibition induces programmed cell death. In some instances, it also acts as a tumor suppressor.
Areas Covered:
Involvement of the SYK in the cancer growth, specifically in the progression of chronic lymphocytic leukemia (CLL), diffuse large B cell lymphomas (DLBCLs), acute myeloid leukemia (AML), and multiple myeloma (MM) is discussed. Therapeutic strategies to target SYK in cancer, including investigational SYK inhibitors, combinations of SYK inhibitors with other drugs targeting therapeutically relevant targets, and recent advancements in constructing new structural assemblages as SYK inhibitors, are also covered.
Expert Opinion:
The SYK inhibitor field is currently marred by the poor translation rate of SYK inhibitors from preclinical to clinical studies. Also, dose-limited toxicities associated with the applications of SYK inhibitors have been evidenced. Thus, the development of new SYK inhibitory structural templates is in the need of the hour. To accomplish the aforementioned, interdisciplinary teams should incessantly invest efforts to expand the size of the armory of SYK inhibitors.
Insights
Spleen tyrosine kinase (SYK) is crucial in cancer cell survival and division, particularly in B-cell malignancies. Inhibiting SYK can induce cancer cell death, but challenges remain in clinical translation and toxicity.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Spleen tyrosine kinase (SYK) is a nonreceptor tyrosine kinase implicated in cancer cell survival and proliferation.
- Constitutive SYK activation is observed in various B-cell malignancies, where its inhibition triggers apoptosis.
- SYK also functions as a tumor suppressor in certain contexts.
Purpose of the Study:
- To review the role of SYK in the progression of specific cancers, including chronic lymphocytic leukemia (CLL), diffuse large B-cell lymphomas (DLBCLs), acute myeloid leukemia (AML), and multiple myeloma (MM).
- To discuss current and emerging therapeutic strategies targeting SYK in cancer treatment.
- To highlight challenges in SYK inhibitor development and advocate for new structural templates.
Main Methods:
- Literature review of SYK's role in cancer.
- Analysis of therapeutic strategies involving SYK inhibitors.
- Discussion of preclinical to clinical translation challenges and toxicity profiles.
Main Results:
- SYK plays a significant role in the pathogenesis of several hematological malignancies.
- Various therapeutic strategies targeting SYK are under investigation, including novel inhibitors and combination therapies.
- Poor translation rates from preclinical to clinical studies and dose-limiting toxicities are major hurdles in SYK inhibitor development.
Conclusions:
- Developing novel SYK inhibitory structural templates is critical for advancing cancer therapy.
- Interdisciplinary efforts are needed to expand the arsenal of effective SYK inhibitors.
- Addressing challenges in clinical translation and toxicity is paramount for successful SYK-targeted treatments.
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