a b s t r a c tIn HCT116 colorectal cancer cells, HeLa cervical cancer cells and HuH-7 hepatoma cells, miR-223 is expressed at a low level. Through infection with lentivirus containing miR-223 precursor, miR-233 was overexpressed in all these cells. Interestingly, the expression levels of FOXO1 mRNA and protein, and phosphorylation levels became significantly lower than those of their control. FOXO1 was down-regulated mainly in the cytoplasm, while the nuclear FOXO1 level became relatively high compared to the cytoplasm. As the unphosphorylated active form of FOXO1 increased in the cells, cyclin D1/p21/p27 were up-regulated at either mRNA or protein level. Proliferation of the cells was also greatly inhibited when miR-223 was over-expressed. Therein, our data suggest that miR-223 regulates FOXO1 expression and cell proliferation.

Introduction: Approximately 20% of lung nodule (LN) patients have more than one moderate-to-high malignant risk LNs. When performing one-stage video-assisted thoracoscopic surgery (VATS) in patients with multiple LNs, the ability to simultaneously localize all of these nodules is critical to operative success. Aim: To explore the efficacy and safety of computed tomography (CT)-guided indocyanine green (IG) localization for multiple ipsilateral LNs. Material and methods: This was a retrospective study of 278 LN patients who underwent CT-guided IG localization prior to VATS resection. Of these patients, 68 underwent localization of multiple ipsilateral LNs, whereas 210 underwent localization of a single LN.Results: In total, 160 LNs were localized in 68 patients in the multiple localization group, while one LN was localized for each of the 210 patients in the single localization group. A 100% technical success rate was achieved in both of these groups, and the mean respective localization durations in the multiple and single LN groups were 11.3 ±4.7 min and 6.3 ±2.7 min (p = 0.001). Of the patients in the multiple and single LN groups, 22 and 15, respectively, experienced pneumothorax (p = 0.001), while 14 and 20 experienced lung hemorrhage (p = 0.016). Wedge/segmental LN technical success rates in both of these groups were 100%. Conclusions: The CT-guided IG-mediated localization of multiple ipsilateral LNs is a safe and effective strategy, although it requires a longer operative duration and is associated with higher rates of adverse events as compared to single nodule localization.

An unfortunate error occurred in the second sentence of the Abstract. The sentence should read: ''Through infection with lentivirus containing miR-223 precursor, miR-223 was overexpressed in all these cells''.