Light-induced nanoscale deformation in azobenzene thin film triggers rapid intracellular Ca2+ increase via mechanosensitive cation channels

This dataset contains raw data for a research article: material characterization data of Disperse Red 1 glass, calcium imaging data of Madin Darby Canine Kidney II epithelial cells that express the genetic calcium indicator jRCaMP1b and immunofluorescence stainings of Piezo1-channels and the actin cytoskeleton in the same cell line. Light induced material deformations were conducted with Zeiss LSM 780 confocal microscope with 488 nm wavelength excitation. The generated topographies were analyzed with atomic force microscopy (AFM) and digital holographic microscopy (DHM), and particle image velocimetry (PIV) was used to determine lateral deformations. Calcium imaging was conducted with the same microscope with 561 nm excitation and calcium signals were recorded in response to light induced material deformations (stimulation performed after 10 frames) (Zeiss C Apo 63x/1.20 objective, pixel size 200 nm, frame rate 1.23 sec/fame, channel1: fluorescence emission, channel2: brightfield). Apical stimulations were conducted with Nikon Eclipse FN1 utilizing micromanipulation (pixel size 200 nm, NIR Apo 40x 0.8W DIC N2 objective). Immunofluorescence stainings (in normal conditions (channel1: nuclei, channel2: Piezo1, channel3: jRCaMP1b, channel4: actin) or after cytochalainD treatment showing actin cytoskeleton depolymerization (channel1: nuclei, channel2: ZO1, channel3: jRCaMP1b, channel4: actin)) were imaged with Nikon A1R (SR Apo TIRF 100x/1.49 objective, pixel size 40 nm, Z-step to 99 nm, deconvolution with Huygens Essential)