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Hyperthermia is one of the most widely employed adjuvant treatments for cancer, especially for hyperthermic intraperitoneal chemotherapy, and has few side effects. read more Gastric cancer has various hyperthermia sensitivities, but the exact molecular mechanisms remain to be elucidated. In the present study, western blotting was performed to detect differential expression of proteins that have been reported to be upregulated in gastric cancer. Following knockdown of these proteins, apoptosis was measured by Annexin V‑FITC/propidium iodide (PI) double staining and hyperthermia treatment was applied. To evaluate the effect of cyclin‑dependent kinase 6 (CDK6) on hyperthermia‑induced apoptosis, CDK6 was knocked down or inhibited by the addition of a specific inhibitor and subsequent PI staining and cell proliferation, migration and invasion assays were performed. Hyperthermia‑induced protein kinase B (AKT) expression and phosphorylation inhibition were detected. As demonstrated in the present study, the hyperthermia‑induced proteins kinesin family member 11 (KIF11), cyclin‑dependent kinase 6 (CDK6), stromal antigen 2, NIMA‑related kinase 2 and karyopherin subunit α 4 were highly expressed in gastric cancer cells, including SH‑10‑TC and HGC‑27 cells. Knockdown of KIF11 significantly increased apoptosis without hyperthermia treatment and CDK6 significantly increased hyperthermia‑induced apoptosis, prompting the present study to focus on CDK6. It was further confirmed that CDK6 activity was critical for decreasing hyperthermia‑induced apoptosis and for cell proliferation. Hyperthermia‑induced AKT expression and phosphorylation inhibition is potentially the main cause of CDK6 transcriptional upregulation. Taken together, these findings demonstrated that CDK6 is upregulated via hyperthermia‑induced AKT inhibition and subsequently protected gastric cancer cells from hyperthermia‑induced apoptosis, indicating that it is a potential therapeutic target to sensitize gastric cancer cells to hyperthermia‑based therapy.Neuroblastoma (NB) is considered a highly prevalent extracranial solid tumor in young children, and the upregulation of N‑myc proto‑oncogene (MYCN) is closely associated with the late stages of NB and poor prognostic outcomes. The current study was designed to evaluate the effects of exosomal microRNA (miRNA/miR)‑17‑5p from MYCN‑amplified NB cells on the proliferative and migratory potential of non‑MYCN amplified NB cells. miR‑17‑5p was found to activate the PI3K/Akt signaling cascade by targeting PTEN, and the overexpression of miR‑17‑5p was found to promote cellular migration and proliferation in vitro. Further experimentation revealed that the elevated expression of miR‑17‑5p in SK‑N‑BE(2) cell‑derived exosomes significantly promoted the proliferative and migratory capacities of SH‑SY5Y cells by inhibiting PTEN. Collectively, these findings demonstrated that miR‑17‑5p derived from MYCN‑amplified NB cell exosomes promoted the migration and proliferation of non‑MYCN amplified cells, highlighting an exosome‑associated malignant role for miR‑17‑5p.Inflammation is the most common cause of most acute and chronic debilitating diseases. Towards unveiling novel therapeutic options for patients with such complications, N‑bromotaurine (TauNHBr) has emerged as a potential anti‑inflammatory agent; however, its therapeutic efficacy is hindered due to its relatively poor stability. To address this challenge, the present study focused on examining the effects of a stable active bromine compound, named bromamine T (BAT). The present study examined the protective properties of BAT against lipopolysaccharide (LPS)‑mediated inflammation in vitro, by using LPS‑stimulated murine J774.A1 macrophages (Mφs), as well as in vivo, by using a murine LPS‑mediated air‑pouch model. Additionally, its efficacy was compared with that of taurine, a known potent anti‑inflammatory molecule. In LPS‑stimulated J774A.1 Mφs, BAT and taurine were very effective in reducing the secretion of pro‑inflammatory mediators. The in vitro experiments indicated that LPS‑mediated inflammation was attenuated due to the protective properties of BAT and of taurine, probably through the inhibition of phosphorylated p65 NF‑κB subunit (Ser 536) nuclear translocation. The in vivo experiments also revealed that BAT and taurine inhibited LPS‑mediated inflammation by reducing total cell/polymorphonuclear cell (PMN) infiltration in the air‑pouch and by decreasing pouch wall thickness. The analysis of exudates obtained from pouches highlighted that the inhibitory effects of BAT and taurine on the secretion of pro‑inflammatory cytokines were similar to those observed in vitro. Notably, the effect of BAT at the highest concentration tested was superior to that of taurine at the highest concentration. Taken together, the findings of the present study indicate that BAT prevents the LPS‑induced inflammatory response both in vitro and in vivo.Notoginsenoside R1 (NGR1), a monomer of Traditional Chinese medicine, is from the Panax notoginsenoside complex, and has been reported to inhibit the proliferation of various types of cancer. However the mechanism underlying NGR1‑mediated inhibition of cervical carcinoma cell proliferation remains unclear. Therefore, the current study aimed to investigate the antitumor effects of NGR1 on cervical carcinoma cell lines (CaSki and HeLa cells) in vitro. The Cell Counting Kit‑8 and soft agar cell colony formation assay results revealed that NGR1 suppressed the viability and the number colonies of CaSki and HeLa cells, respectively. Furthermore, the DAPI staining, flow cytometry and western blotting results revealed that NGR1 induced cervical carcinoma cell apoptosis, cell cycle arrest in the S phase, upregulation of cyclin A2 and CDK2 expression levels, and downregulation of cyclin D1 expression levels. To further investigate the mechanisms of NGR1, DNA‑damage‑related proteins, including H2A.X variant histone (H2AX), ATR serine/threonine kinase (ATR) and p53, and the nucleolus protein, plant homeodomain finger protein 6 (PHF6) were analyzed. The results indicated that NGR1 triggered the phosphorylation of H2AX and ATR in a dose‑ and time‑dependent manner, and downregulated the expression level of PHF6 and upregulated the expression level of p53 in a dose‑ and time‑dependent manner. In conclusion, the findings of the present indicated that NGR1 may inhibit the viability of cervical carcinoma cells and induce cell apoptosis via DNA damage, which may be activated by the downregulation of PHF6 expression levels, and the subsequent triggering of the phosphorylation of H2AX and ATR. In addition, NGR1 may exert an ability to arrest cervical carcinoma cells in the S phase and upregulate the expression levels of cyclin A2 and CDK2. Therefore, NGR1 may serve as a novel chemotherapeutic agent for cervical carcinoma.
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