4.7 Review

Perineural invasion: A potential driver of cancer-induced pain

Journal

BIOCHEMICAL PHARMACOLOGY
Volume 215, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bcp.2023.115692

Keywords

Perineural invasion; Tumor innervation; Cancer -associated pain; Nerve damage; Tumor microenvironment

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Perineural invasion (PNI) is the process of tumor invasion and interaction with nerves, causing dynamic changes and disturbing symptoms. PNI-related cancer pain in neuro-rich tumors is closely related to nerve invasion in the tumor microenvironment, and can indicate the occurrence of PNI, guide treatment strategies, and predict tumor resectability and the need for palliative care.
Perineural invasion (PNI) is the process through which tumors invade and interact with nerves. The dynamic changes in the nerves caused by PNI may induce disturbing symptoms. PNI-related cancer pain in neuro-rich tumors has attracted much attention because the occurrence of tumor-induced pain is closely related to the invasion of nerves in the tumor microenvironment. PNI-related pain might indicate the occurrence of PNI, guide the improvement of treatment strategies, and predict the unresectability of tumors and the necessity of palliative care. Although many studies have investigated PNI, its relationship with tumor-induced pain and its common mechanisms have not been summarized thoroughly. Therefore, in this review, we evaluated the relationship between PNI and cancer-associated pain. We showed that PNI is a major cause of cancer-related pain and that this pain can predict the occurrence of PNI. We also elucidated the cellular and molecular mechanisms of PNIinduced pain. Finally, we analyzed the possible targets for alleviating PNI-related pain or combined antitumor and pain management. Our findings might provide new perspectives for improving the treatment of patients with malignant tumors.

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