Differentiation NPCs to Dopaminergic/Midbrain Neurons

michela.deleidi

Published: 2023-03-31 DOI: 10.17504/protocols.io.8epv5jp65l1b/v1

Abstract

This protocol details methods for differentiation of NPCs to Dopaminergic/Midbrain Neurons.

Steps

Day -2: split NPCs

1.

Coat numbers of wells you need on a well-plate with Matrigel:

Note
Matrigel (Corning, #354230) Dilute 4°C aliquot 1/10 in DMEM/F12 without HEPES (Gibco, #11320033)-> there is always one aliquot thawed in 4°C. More aliquots are in -20°C. Keep Matrigel cool on ice!

1.1.

Dilute thawed Matrigel out of 4°C 1/10 in DMEM/F12 without HEPES.

Note
1ml diluted Matrigel is enough for one complete plate. Only rinsing the wells!

1.2.

Incubate 0h 30m 0s 37°C in incubator.

2.

Remove old medium and add 500µL (Sigma Aldrich, #A6964-100 ml) into one well of a 6well-plate or 250µL for well of a 12 well-plate.

3.

Incubate 0h 5m 0s 37°C in incubator.

4.

Dilute and inactivate Accutase with 1mL (Gibco #11320033) and collect in 15ml Falcon containing 3mL. Centrifuge 1100rpm.

5.

Remove supernatant and resuspend pellet in 1mL (1/1000, Selleckchem, #S1049).

6.

Count cells with Neubauer counting chamber (4big squares) and seed 1.000.000 cells in one matrigel-coated well of a 6well-plate. Use 1.5mL (1/1000, Selleckchem, #S1049).

Day 0: Start Differentiation

7.

Remove old Erhaltung/NPC-Medium and add Differentiation-Medium .

8.

Change Medium every 48h 0m 0s.

Day 6

9.

Coat numbers of wells you need on a well-plate with Matrigel:

Note
Matrigel (Corning, #354230) Dilute 4°C aliquot 1/10 in DMEM/F12 without HEPES (Gibco, #11320033)-> there is always one aliquot thawed in 4°C. More aliquots are in -20°C. Keep Matrigel cool on ice!

9.1.

Dilute thawed Matrigel out of 4°C 1/10 in DMEM/F12 without HEPES.

Note
1ml diluted Matrigel is enough for one complete plate. Only rinsing the wells!

9.2.

Incubate 0h 30m 0s 37°C in incubator.

10.

Remove old medium and add 500µL (Gibco, #00-4666-56) into one well of a 6well-plate. Incubate 0h 5m 0s 37°C in incubator.

11.

Dilute and inactivate Accumax with 1mL (Gibco #11320033) and collect in 15ml Falcon containing 3mL. Centrifuge 1100rpm.

12.

Remove supernatant and resuspend pellet in 1mL (1/1000, Selleckchem, #S1049).

13.

Count cells with Neubauer counting chamber (4big squares) and seed 1.000.000 cells in one matrigel-coated well of a 6well-plate. Use 1.5mL (1/1000, Selleckchem, #S1049).

Day 8: Start Maturation

14.

Remove old Differentiation-Medium and add Maturation-Medium + 0.5uM PMA (1:2000, Merck #540220-5MG).

Day 10: Medium change

15.

Change Medium to Maturation (without PMA!) .

16.

Change Medium every 48h 0m 0s.

Day 14: Final Splitting

17.

Coat numbers of wells you need on a well-plate with Matrigel:

Note
Matrigel (Corning, #354230) Dilute 4°C aliquot 1/10 in DMEM/F12 without HEPES (Gibco, #11320033)-> there is always one aliquot thawed in 4°C. More aliquots are in -20°C. Keep Matrigel cool on ice!

17.1.

Dilute thawed Matrigel out of 4°C 1/10 in DMEM/F12 without HEPES.

Note
1ml diluted Matrigel is enough for one complete plate. Only rinsing the wells!

17.2.

Incubate 0h 30m 0s 37°C in incubator.

18.

Remove old medium and add 500µL (Gibco, #00-4666-56) into one well of a 6well-plate. Incubate 0h 5m 0s 37°C in incubator.

19.

Dilute and inactivate Accumax with 1mL (Gibco #11320033) and collect in 15ml Falcon containing 3mL. Centrifuge 1100rpm.

20.

Remove supernatant and resuspend pellet in 1mL (1/1000, Selleckchem, #S1049).

21.

Count cells with Neubauer counting chamber (4big squares) and seed 1.000.000 cells in one matrigel-coated well of a 6well-plate. Use 1.5mL (1/1000, Selleckchem, #S1049).

Day >21:

22.

After Day 21, cells are ready.

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