Multifaceted Applications of Nanomaterials in Colorectal Cancer Management: Screening, Diagnostics, and Therapeutics

Abstract

Colorectal cancer (CRC) is the third most common malignant tumor worldwide. Early detection and treatment of CRC can significantly improve patient survival and quality of life, while advanced-stage patients still face numerous challenges, such as drug resistance and adverse effects. Consequently, researchers are developing more efficient early screening and diagnostic strategies for CRC. Consequently, researchers are actively developing more efficient strategies for diagnosis and refined treatments. This review comprehensively examines the diverse applications of various nanomaterials in CRC management, including screening, diagnostic imaging, surgical guidance, drug delivery, radiotherapy, and modulation of the tumor microenvironment. Firstly, we explored how nanomaterials are revolutionizing CRC screening by enhancing the detection of early-stage tumors. In the realm of diagnostic imaging, nanomaterials are employed to improve the clarity and specificity of imaging modalities, thereby facilitating more accurate diagnoses. The review also examines the use of nanomaterials in surgical guidance, where they aid in the precise identification and removal of tumors, potentially improving surgical outcomes. Furthermore, the review underscores the significance of nanomaterials in drug delivery systems, which enable targeted therapy and reduce systemic side effects. We also discussed the role of nanomaterials in radio-sensitization, where they enhance the efficacy of radiotherapy by increasing the sensitivity of tumor cells to radiation. Additionally, the modulation of the tumor immune microenvironment using nanomaterials is highlighted as a promising strategy to induce immune response against cancer cells. Throughout the review, the mechanisms of action of these nanomaterials are meticulously examined, providing insights into how they interact with biological systems to achieve their therapeutic effects. The efficacy of these nanomaterials in overcoming drug resistance is also a focal point, as this is a critical factor in improving the long-term outcomes for CRC patients. In conclusion, while nanomaterials hold great promise for the management of CRC, addressing their biocompatibility and clinical translation challenges is crucial for their safe and effective application in clinical settings.

Keywords: Clinical practice; Colorectal cancer; Nanomaterials; Tumor microenvironment.

Figure 1

Multifaceted Applications of Nanomaterials in Colorectal Cancer Management. This figure illustrates the diverse roles of nanomaterials in the screening, diagnostics, and therapeutics of colorectal cancer (CRC). Nanomaterials serving as imaging contrast agents have demonstrated significant potential in augmenting the sensitivity and specificity of colorectal cancer detection during endoscopic and magnetic resonance imaging (MRI) procedures. These agents enhance the intraoperative identification of micro-metastatic lesions, thereby facilitating the precise resection of tumor tissue. Moreover, the nanomaterials contribute to the efficient capture of circulating tumor cells within the bloodstream, which is instrumental for patient surveillance, as well as for the early detection and screening of cancer. The drug delivery systems that utilize nanomaterials to efficiently and specifically deliver therapeutic agents to tumor sites remain a focus of research. Upon activation by stimuli such as near-infrared light or ultrasound, these nanocarriers can trigger the release of cytotoxic drugs directly at the tumor site. Additionally, they have the capability to suppress tumor growth through mechanisms that include the induction of reactive oxygen species, modulation of the tumor’s immunological microenvironment, and other therapeutic strategies. This multifaceted approach underscores the versatility and promise of nanotechnology in advancing cancer treatment and management.