Abstract
Cellular senescence, a state of permanent growth arrest, is an important mechanism preventing the propagation of damaged cells. It suppresses cancer development in premalignant lesions in response to activated oncogenes and in tumors following therapy. The presence of senescent cells in premalignant lesions and tumors is controlled by the immune system. The ability to identify and quantify senescent cells more efficiently in vivo is necessary in order to evaluate the effect of these cells on tumorigenesis and cancer therapy. Through combining senescent-associated beta-galactosidase staining with ImageStream X analysis, we have developed an effective method to identify and quantify senescent cancer cells in vivo.
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