NOTCH1 mediates a reciprocal switch between two distinct secretomes during senescence [N1ICD]

ER:RAS-G12V expressing IMR90 cells were transduced with N1ICD-containing or control vectors before treatment with either 100nM 4-OHT or vehicle for 6 days leading to Notch-induced senescence (NIS), RAS-induced senescence (RIS) or combined Notch and Ras-induced senescence (RNIS). Overall design: IMR90 cells expressing a 4-hydroxytamoxifen (4-OHT) inducible estrogen receptor (ER)-coupled RAS-G12V (ER:RAS-G12V) were transduced with N1ICD-FLAG-containing (residues 1758-2556 of human NOTCH1, as per Capobianco et al, Mol Cell Biol, 1997) or control vector before treatment with either 100nM 4-OHT or vehicle for 6 days , leading to RAS-induced senescence (RIS), NOTCH-induced senescence (NIS) or combined Ras & NOTCH-induced senescence (RNIS). The total RNA was then analysed for transcriptional profiling using mRNA-sequencing. There were 6 (six) biological replicates for each experimental condition. Untreated, vector-transduced ER:RAS IMR90 cells were the control condition

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Hoare M, Ito Y, Kang TW, Weekes MP, Matheson NJ, Patten DA, Shetty S, Parry AJ, Menon S, Salama R, Antrobus R, Tomimatsu K, Howat W, Lehner PJ, Zender L, Narita M