Preparation of solutions for dissociation: all solution must be prepared fresh
Papain solution: (5 ml of solution for a maximum of 5 brains and/or region / dissection)
Trituration solution: (20 ml of trituration solution for 10 brains)
Centrifugation solution: (5ml of solution for a maximum of 5 brains and/or region / dissection)
*** Prepare a tube with the dissociation solution to rinse the tissues after incubation in papain – this tube also serves as a reference tube for adjusting the pH of the other solutions (the phenol red is pH sensitive, so it allows you to compare the pH). ***
Remember to sterilize enough 35mm petri dishes and Whatman filters in the morning of dissection and leave them in the hood for transfer of coverslips for seeding of neurons.
1Papain is a cysteine protease that catalyzes the cleavage of peptide bonds
2Protease inhibitor blocks the activity of proteolytic enzymes
3Used as a buffer solution and preferred over bicarbonate buffer for cell culture due to better stability at physiological pH