TY - JOUR AB - Breast cancer (BC) is the most common type of cancer in women. Triple‑negative BC (TNBC) constitutes 10‑15% of all BC cases and is associated with a poor prognosis. It has previously been reported that microRNA (miR)‑93‑5p is dysregulated in plasma exosomes from patients with BC and that miR‑93‑5p improves radiosensitivity in BC cells. The present study identified EphA4 as a potential target gene of miR‑93‑5p and investigated the pathway related to miR‑93‑5p in TNBC. Cell transfection and nude mouse experiments were performed to verify the role of the miR‑93‑5p/EphA4/NF‑κB pathway. Moreover, miR‑93‑5p, EphA4 and NF‑κB were detected in clinical patients. The results revealed that EphA4 and NF‑κB were downregulated in the miR‑93‑5p overexpression group. By contrast, EphA4 and NF‑κB expression levels were not significantly altered in the miR‑93‑5p overexpression + radiation group compared with those in the radiation group. Furthermore, overexpression of miR‑93‑5p with concomitant radiation therapy significantly decreased the growth of TNBC tumors in vivo. In conclusion, the present study revealed that miR‑93‑5p targeted EphA4 in TNBC through the NF‑κB pathway. However, radiation therapy prevented tumor progression by inhibiting the miR‑93‑5p/EphA4/NF‑κB pathway. Therefore, it would be interesting to elucidate the role of miR‑93‑5p in clinical research. AD - Department of General Surgery, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu 225300, P.R. China Department of Oncology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu 225300, P.R. China AU - Pan,Chi AU - Shao,Shanshan AU - Gu,Yawen AU - Ni,Qingtao DA - 2023/04/01 DO - 10.3892/or.2023.8515 IS - 4 JO - Oncol Rep KW - microRNA‑93‑5p EphA4 NF‑κB radiosensitivity triple‑negative breast cancer PY - 2023 SN - 1021-335X 1791-2431 SP - 78 ST - Radiation prevents tumor progression by inhibiting the miR‑93‑5p/EphA4/NF‑κB pathway in triple‑negative breast cancer T2 - Oncology Reports TI - Radiation prevents tumor progression by inhibiting the miR‑93‑5p/EphA4/NF‑κB pathway in triple‑negative breast cancer UR - https://doi.org/10.3892/or.2023.8515 VL - 49 ER -