Cells were maintained at 37°C and 5% CO
2 (see
Supplementary Data Table 2). Live cell Airyscan superresolution microscopy used a Zeiss
LSM 880 confocal microscope with Airyscan detector and
63× Plan-Apochromat oil objective, NA 1.4. Sequential excitation of fluorophores was used, with 488nm laser line for Snap-Cell Oregon Green and MitoSOX, and 633nm laser for Snap-Cell 647-SiR, with appropriate dual bandpass filters. The Airyscan detector was adjusted regularly, and images were Airyscan processed in 2D using the
Zeiss Zen 2.3 software package (Carl Zeiss Microscopy).
For spinning disk confocal imaging, cells were imaged on a 3i Marianas platform with a Zeiss Axio Observer Z1, Optovar 1×, 1.6× and 2.5×, with a Yokogawa
CSU-X1 M1 spinning disk, Sutter LB-10W fast 10-position filter wheel with filters: 445/45, 525/30, 617/73, and Andor Neo sCMOS camera using a
63× Alpha Plan-Apochromat oil objective, NA 1.46 (Carl Zeiss Microscopy), using Slidebook 5.5 acquisition software (3i) and lasers: Violet (solid state 405nm/100mW), Blue (solid state 488nm/150mW), and Lime (solid state 561nm/50mW).
An inverted Nikon
widefield system with Andor Zyla 4.2+ camera, external filter wheel and SpectraX LED was used for widefield imaging. Images were acquired using a 60× water objective, NA 1.20, and NIS-Elements 4.5 software.
Döhla J., Kuuluvainen E., Gebert N., Amaral A., Englund J.I., Gopalakrishnan S., Konovalova S., Nieminen A.I., Salminen E.S., Muñumer R.T., Ahlqvist K., Yang Y., Bui H., Otonkoski T., Käkelä R., Hietakangas V., Tyynismaa H., Ori A, & Katajisto P. (2022). Metabolic determination of cell fate through selective inheritance of mitochondria. Nature cell biology, 24(2), 148-154.