Long-Term Exposure of A549 Cells to Titanium Dioxide Nanoparticles Induces DNA Damage and Sensitizes Cells towards Genotoxic Agents Scientists demonstrated that long-term exposure to titanium dioxide nanoparticles does not affect cell viability but causes DNA damage, particularly oxidative damage to DNA and increased 53BP1 foci counts, correlated with increased intracellular accumulation of nanoparticles. [Nanotoxicology] Abstract Specific Regulation of PRMT1 Expression by PIAS1 and RKIP in BEAS-2B Epithelia Cells and HFL-1 Fibroblasts in Lung Inflammation The authors investigated the cell type specific regulatory mechanism of protein arginine methyltransferase 1 (PRMT1). Epithelial cells and fibroblasts were stimulated with IL-4 or IL-1β. [Sci Rep] Full Article Linocin and OmpW Are Involved in Attachment of the Cystic Fibrosis Associated Pathogen Burkholderia cepacia Complex to Lung Epithelial Cells and Protect Mice against Infection Investigators developed a new proteomics approach to identify bacterial proteins that are involved in attachment of Burkholderia cepacia complex to lung epithelial cells. [Infect Immun] Abstract Effects of Lipopolysaccharide, Multiwalled Carbon Nanotubes, and the Combination on Lung Alveolar Epithelial Cells Scientists investigated the effects of lipopolysaccharide (LPS), multiwalled carbon nanotubes (MWCNT), and the combination of LPS and MWCNT on the expression of matrix metalloproteinase-9 and metalloproteinase-12, collagen 3A1, and transforming growth factor beta in alveolar epithelial A549 cells. [Environ Toxicol] Abstract LUNG CANCER PARP1 Enhances Lung Adenocarcinoma Metastasis by Novel Mechanisms Independent of DNA Repair The authors find that poly (ADP-ribose) polymerase 1 (PARP1) expression is associated with overall and distant metastasis-free survival in lung adenocarcinoma patients. Consistent with this, genetic knockdown and pharmacological inhibition of PARP1 significantly attenuated the metastatic potential of lung adenocarcinoma cells. [Oncogene] Abstract Inhibitory Effect of Traditional Oriental Medicine-Derived Monoamine Oxidase B Inhibitor on Radioresistance of Non-Small Cell Lung Cancer Danshensu, which is a selected component of traditional oriental medicine compound, was found to reduce the radioresistance of non-small cell lung cancer by inhibiting the nuclear factor-κB pathway. [Sci Rep] Full Article Reciprocal Negative Regulation between EGFR and DEPTOR Plays an Important Role in Progression of Lung Adenocarcinoma A series of assays conducted in DEP domain-containing mTOR-interacting protein (DEPTOR) knockout or ectopic expression in A549 cells confirmed that DEPTOR inhibited proliferation, migration, and invasion as well as the in vivo tumor growth of lung adenocarcinoma. [Mol Cancer Res] Abstract The Repair Capacity of Lung Cancer Cell Lines A549 and H1299 Depends on HMGB1 Expression Level and the p53 Status Researchers demonstrated that overexpression of high mobility group box 1 (HMGB1) protein inhibited cis-platinated DNA repair in vivo and the effect strongly depended on its C-terminus. They registered increased levels of DNA repair after HMGB1 silencing only in p53 defective H1299 lung cancer cells. [J Biochem] Abstract |