The expression level of long non-coding RNA (lncRNA), which functions in a manner similar to that of microrNA, has been confirmed to be closely associated with the regulatory network of multiple cancers. The primary focus of this particular research endeavor was to elucidate the mechanism of action of LINC01232 within the context of prostate cancer, specifically examining how it influences the proliferation of prostate cancer cells by interacting with the miR-181a-5p/IRS2 pathway. Additionally, the study aimed to delve deeper into the role of the Ki-67 protein within this intricate process. To assess the expression and localization of the Ki-67 protein in prostate cancer cells, researchers employed a combination of immunofluorescence and immunohistochemistry techniques. The expression level of Ki-67 protein decreased significantly after down-regulation of LINC01232, indicating that the cell proliferation activity was inhibited. Immunofluorescence and immunohistochemical experiments further confirmed that the expression of Ki-67 protein in prostate cancer cells was positively correlated with the expression of LINC01232.