Cell Cycle Checkpoints cell cycle checkpoint 8 human 8 metabolism 8 signal transduction 8 Animals 6 Article 6 Humans 6 Mice 6 Phosphorylation 6 Signal Transduction 6 cell cycle arrest 6 controlled study 6 human cell 6 mitogen activated protein kinase 6 mouse 6 phosphorylation 6 protein expression 6 unclassified drug 6 Apoptosis 4 Carcinoma, Non-Small-Cell Lung 4 Cell Proliferation 4 Lung Neoplasms 4 animal 4 animal cell 4 apoptosis 4 cancer inhibition 4 cell proliferation 4 cucurbitacin 4 cucurbitacin B 4