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Pre-clinical Evaluation of Tyrosine Kinase Inhibitors for Treatment of Acute Leukemia
Published on: September 18, 2013
Small molecule tyrosine kinase inhibitors in the treatment of solid tumors: an update of recent developments
Neeltje Steeghs1, Johan W R Nortier, Hans Gelderblom
1Department of Clinical Oncology K1-P, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands. n.steeghs@lumc.nl
Abstract:
Small molecule tyrosine kinase inhibitors (TKIs) are developed to block intracellular signaling pathways in tumor cells, leading to deregulation of key cell functions such as proliferation and differentiation. Over 25 years ago, tyrosine kinases were found to function as oncogenes in animal carcinogenesis; however, only recently TKIs were introduced as anti cancer drugs in human cancer treatment. Tyrosine kinase inhibitors have numerous good qualities. First, in many tumor types they tend to stabilize tumor progression and may create a chronic disease state which is no longer immediately life threatening. Second, side effects are minimal when compared to conventional chemotherapeutic agents. Third, synergistic effects are seen in vitro when TKIs are combined with radiotherapy and/or conventional chemotherapeutic agents. In this article, we will give an update of the tyrosine kinase inhibitors that are currently registered for use or in an advanced stage of development, and we will discuss the future role of TKIs in the treatment of solid tumors. The following TKIs are reviewed: Imatinib (Gleevec/Glivec), Gefitinib (Iressa), Erlotinib (OSI-774, Tarceva), Lapatinib (GW-572016, Tykerb), Canertinib (CI-1033), Sunitinib (SU 11248, Sutent), Zactima (ZD6474), Vatalanib (PTK787/ZK 222584), Sorafenib (Bay 43-9006, Nexavar), and Leflunomide (SU101, Arava).
Insights
Small molecule tyrosine kinase inhibitors (TKIs) offer targeted cancer therapy with fewer side effects than chemotherapy. These drugs stabilize tumor progression and show promise when combined with other treatments for solid tumors.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Tyrosine kinases are oncogenes involved in cell proliferation and differentiation.
- Small molecule tyrosine kinase inhibitors (TKIs) target these pathways in cancer cells.
- TKIs represent a newer class of anti-cancer drugs compared to traditional chemotherapy.
Purpose of the Study:
- To provide an update on registered and developing TKIs for cancer treatment.
- To discuss the future role of TKIs in managing solid tumors.
- To review specific TKIs including Imatinib, Gefitinib, and Sorafenib.
Main Methods:
- Review of currently registered and advanced-stage TKIs.
- Analysis of TKI efficacy in stabilizing tumor progression.
- Evaluation of synergistic effects with radiotherapy and chemotherapy.
Main Results:
- TKIs can stabilize tumor progression, potentially leading to a chronic disease state.
- TKIs exhibit minimal side effects compared to conventional chemotherapy.
- In vitro studies show synergistic effects when TKIs are combined with radiotherapy and/or chemotherapy.
Conclusions:
- TKIs are a valuable addition to cancer treatment, offering targeted therapy with improved tolerability.
- Further research and development are ongoing for TKIs in solid tumor treatment.
- The combination of TKIs with other modalities holds significant therapeutic potential.
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