Colorectal carcinogenesis--update and perspectives

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Colorectal cancer (CRC) is a prevalent malignancy in Western countries, contributing significantly to cancer mortality.
• Multiple factors influence CRC development, including metabolism, inflammation, lifestyle, and genetic predispositions.
• Genetic pathways like Chromosome Instability and Microsatellite Instability are crucial in CRC pathogenesis.

Purpose of the Study:

• To review current understanding of colorectal cancer (CRC) genetics and molecular biology.
• To explore advancements in CRC diagnosis and treatment strategies.
• To assess the impact of molecular knowledge on clinical perspectives.

Main Methods:

• Review of scientific literature on colorectal cancer (CRC) genetics and molecular pathways.
• Analysis of current screening strategies, including fecal occult blood testing and colonoscopy.
• Examination of molecular targets in CRC treatment, such as growth factor receptors.

Main Results:

• Identification of major genetic pathways: Chromosome Instability (sporadic CRC) and Microsatellite Instability (hereditary non-polyposis colon cancer).
• Progress in CRC screening and treatment modalities, including targeted therapies.
• Emerging molecular targets like epidermal growth factor receptor and vascular endothelial growth factor receptor.

Conclusions:

• Genetic and molecular insights have expanded the understanding and clinical approach to CRC diagnosis and treatment.
• Despite progress, the efficacy of current targeted therapies for colorectal cancer requires further research and validation.
• Future studies are essential to define the role of novel treatment modalities in managing colorectal cancer.