• 云顶集团3118(中国)

    Differentiation NPCs to Dopaminergic/Midbrain Neurons

    michela.deleidi

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