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The molecular rationale of Src inhibition in colorectal carcinomas
Antonios N Gargalionis1, Michalis V Karamouzis, Athanasios G Papavassiliou
1Molecular Oncology Unit, Department of Biological Chemistry, University of Athens Medical School, Athens, Greece.
Abstract:
Src has been one of the most studied proto-oncogenes. The cellular Src (c-Src) holds a critical role in several human malignancies and has emerged as a key factor that promotes tumor progression during the multistep process of colorectal cancer (CRC) pathogenesis. The robust activation of Src in CRC of aggressive phenotype and poor prognosis seems to be a subsequent event of a strong link between its deregulated activity and the tumor's cell adhesion properties, invasiveness and metastatic potential. The rarely detected genetic defects drive interest in signaling networks that control Src kinase activity and integrate the association of Src with receptor tyrosine kinases (RTKs), such as the epidermal growth factor receptor (EGFR). Therefore, a dynamic crosstalk is being formed with oncogenic capacity and therapeutic applications, because Src inhibition seems to sensitize previously unresponsive cancer cells to chemotherapy and anti-EGFR inhibitors. The present review explores the molecular basis behind Src inhibition in colorectal carcinomas. Furthermore, preclinical studies and clinical trials of Src inhibitors and combination regimens are discussed, providing new insights for further investigation and new therapeutic strategies.
Insights
Cellular Src (c-Src) is crucial in colorectal cancer (CRC) progression. Inhibiting c-Src shows promise in sensitizing tumors to chemotherapy and anti-EGFR therapies, offering new therapeutic strategies.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Cellular Src (c-Src) is a proto-oncogene implicated in various human malignancies.
- Activated c-Src is linked to aggressive colorectal cancer (CRC) phenotypes, poor prognosis, and enhanced tumor invasiveness and metastasis.
- The interplay between c-Src activity and receptor tyrosine kinases (RTKs), like EGFR, is critical in CRC pathogenesis.
Purpose of the Study:
- To explore the molecular mechanisms of c-Src inhibition in colorectal carcinomas.
- To review preclinical and clinical studies on c-Src inhibitors and combination therapies.
- To provide insights into novel therapeutic strategies for CRC.
Main Methods:
- Literature review of molecular basis of c-Src inhibition.
- Analysis of preclinical studies on c-Src inhibitors.
- Examination of clinical trials involving c-Src inhibitors and combination regimens.
Main Results:
- Deregulation of c-Src activity is strongly associated with CRC cell adhesion, invasiveness, and metastatic potential.
- Src inhibition demonstrates potential to sensitize resistant cancer cells to chemotherapy and anti-EGFR therapies.
- Targeting c-Src represents a promising therapeutic avenue for colorectal cancer.
Conclusions:
- c-Src plays a pivotal role in colorectal cancer progression and metastasis.
- Src inhibition offers a viable strategy to overcome therapeutic resistance in CRC.
- Further investigation into c-Src inhibitors and combination therapies is warranted for developing new CRC treatment strategies.
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