Journal
CELLULAR ONCOLOGY
Volume -, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1007/s13402-023-00857-y
Keywords
Perineural invasion; Prognosis; Tumor microenvironment; Neurotrophins; Colorectal innervation
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In recent years, the importance of the nervous system in the tumor microenvironment has been recognized. The bidirectional communication between nerves and cancer cells is crucial for tumor initiation and progression. Perineural invasion (PNI) is a common feature in various malignancies and is associated with tumor invasion, metastasis, cancer-related pain, and unfavorable clinical outcomes. It is essential to investigate the role of nerves in colorectal cancer (CRC) and understand the mechanisms of PNI in order to impede tumor progression and improve patient survival.
Background In recent years, the significance of the nervous system in the tumor microenvironment has gained increasing attention. The bidirectional communication between nerves and cancer cells plays a critical role in tumor initiation and progression. Perineural invasion (PNI) occurs when tumor cells invade the nerve sheath and/or encircle more than 33% of the nerve circumference. PNI is a common feature in various malignancies and is associated with tumor invasion, metastasis, cancer-related pain, and unfavorable clinical outcomes. The colon and rectum are highly innervated organs, and accumulating studies support PNI as a histopathologic feature of colorectal cancer (CRC). Therefore, it is essential to investigate the role of nerves in CRC and comprehend the mechanisms of PNI to impede tumor progression and improve patient survival.Conclusion This review elucidates the clinical significance of PNI, summarizes the underlying cellular and molecular mechanisms, introduces various experimental models suitable for studying PNI, and discusses the therapeutic potential of targeting this phenomenon. By delving into the intricate interactions between nerves and tumor cells, we hope this review can provide valuable insights for the future development of CRC treatments.
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