Project description:To investigate the effect of blocking the activity of KLK5 and KLK7 in the skin in a model of atopic dermatitis, we treated mice inhibitory antibodies against KLK5 and KLK7.
Project description:Lung cancer is one of the most common cancers in the world, which accounts for about 27% of all cancer deaths. However, the mechanisms underlying the pathogenesis of lung cancer cells remain largely elusive. In this study, we examined the role of the Forkhead box protein P1 (FOXP1) in lung cancer development. Our Oncomine analysis shows that FOXP1 is downregulated in lung adenocarcinoma compared with normal lung tissue. Knockdown of FOXP1 promotes the proliferation growth and invasion of PC9 and A549 cells by regulating genes of chemokine signaling molecules, including CCR1, ADCY5, GNG7, VAV3, and PLCB1. Simultaneous knockdown of CCR1 and FOXP1 attenuated FOXP1 knockdown-induced increase of lung cancer cell growth. Finally, knockdown of FOXP1 in PC9 cells promotes the tumorigenesis via CCR1 signaling in xenograft mouse model. Taken together, our data suggest that FOXP1 plays important roles in preventing lung adenocarcinoma development via suppressing chemokine signaling pathways. Novel strategies might be developed to prevent the development of lung adenocarcinoma by targeting FOXP1
Project description:To investigate the abnormal gene expression in Osimertinib Resistance lung cancer cell line, We performed gene expression profiling analysis using data obtained from RNA-seq of PC9 cell line and PC9-OR cell line.
Project description:To determine how KLK5 and KLK7 can impact keratinocyte responses we treated human primary keratinocytes with recombinant KLK5 and KLK7 for 4 hours.
Project description:Inevitable gefitinib resistance and relapse of the disease was the biggest hurdle to NSCLC treatment. Importantly, the role of hypoxia in solid tumor tissues in vivo in gefitinib acquired resistance and its relationship to lung cancer stem cells (LCSCs) has not been fully elucidated. Here, the PC9 cells were treated with short term gefitinib or/and hypoxia, also, PC9 gefitnib resistant (PC9-GR) cell line was established and ALDH positive PC9 cells were sorted by FACs. Transcriptome analysis among those PC9 cell groups revealed the important role of hypoxia in gefitinib acquired resistance and signaling transduction change, which may critical for NSCLC disease progression and recurrence.