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Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies
Published on: September 30, 2016
Emerging VEGF-receptor inhibitors for colorectal cancer
Erika Martinelli1, Teresa Troiani, Floriana Morgillo
1Oncologia Medica and Immunologia Clinica, Dipartimento Medico-Chirurgico di Internistica Clinica e Sperimentale F. Magrassi e A. Lanzara, Seconda Università degli Studi di Napoli, Via S. Pansini 5, 80131 Napoli, Italia. erikamartinelli75@yahoo.it
Introduction:
Targeted agents have dramatically improved and enriched the therapeutical choices for patients with metastatic colorectal cancer (mCRC). By better understanding the role of the angiogenic pathway in colorectal cancer (CRC), new therapies have been developed. Bevacizumab, the first anti-angiogenetic agent approved for the treatment of mCRC provide a proof of concept since it has improved the progression-free survival and overall survival when combined with cytotoxic chemotherapy.
Areas Covered:
This review is focused on the most recent findings on the VEGF signaling pathway and new therapeutic drugs explored in clinical trials.
Expert Opinion:
Despite the advantage offered by bevacizumab, the median overall survival of mCRC patient exceeds 21 months; thus, investigational efforts are needed. Several antiangiogenic agents for the treatment of mCRC are being tested in preclinical and clinical Phase I/II trials. Unfortunately a discrete number of Phase III trials produced negative results. Recently aflibercept and regorafenib, two new antiangiogenic drugs, have been approved as the new-targeted agents for the treatment of mCRC, according to the positive findings from the VELOUR and the CORRECT studies. In order to maximize clinical impact it will be important to validate predictive biomarkers and best combination treatments to offer for mCRC patients; further research and intense investigation is still required.
Insights
Targeted therapies, including anti-angiogenic agents like bevacizumab, have advanced metastatic colorectal cancer (mCRC) treatment. Further research is essential to improve overall survival for mCRC patients.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Metastatic colorectal cancer (mCRC) treatment has been significantly improved by targeted agents.
- Understanding the angiogenic pathway in colorectal cancer (CRC) has led to new therapeutic strategies.
- Bevacizumab, an anti-angiogenic agent, demonstrated improved progression-free and overall survival in mCRC when combined with chemotherapy.
Purpose of the Study:
- To review recent findings on the VEGF signaling pathway in CRC.
- To discuss novel therapeutic drugs for mCRC currently in clinical trials.
Main Methods:
- Literature review focusing on the VEGF signaling pathway.
- Analysis of clinical trial data for new anti-angiogenic agents in mCRC.
Main Results:
- Several anti-angiogenic agents are under investigation for mCRC.
- Some Phase III trials yielded negative results, while others led to new drug approvals.
- Aflibercept and regorafenib are newly approved anti-angiogenic agents for mCRC based on positive trial findings.
Conclusions:
- Despite advances, median overall survival for mCRC patients remains a challenge.
- Validation of predictive biomarkers and optimal combination treatments are crucial for maximizing clinical impact.
- Continued research and investigation are necessary for further advancements in mCRC therapy.
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