Cellular Senescence Assay

KZ Keda Zhang
LY Li Yu
FL Fu-Rong Li
XL Xue Li
ZW Zhefeng Wang
XZ Xiaoting Zou
CZ Chi Zhang
KL Kongpeng Lv
BZ Boping Zhou
SM Samir Mitragotri
MC Ming Chen
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HDFs (5 × 104) were seeded per well in 6-well plates and cultured for 24 h. The following procedures were conducted as same as cell proliferation assay. But after treatment with exosomes, the cells were fixed and stained using a senescence-associated β-galactosidase (SA-β-gal) staining kit (Cell Signaling Technology, USA) according to the product instruction. Four images were captured in each well in four directions (up, down, left and right) using an inverted light microscope (Eclipse Ts2, Nikon, Japan), and senescent cells were counted by blue staining.

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