Luminex 100 IS Developer Workbench Guide Version 2.3 Manual de usuario Pagina 59

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PN 89-00002-00-084 Rev. B 53
xMAP Technology Protein Coupling Protocol
Preparation 1. Allow all reagents to warm to room temperature.
2. Using an analytical balance, weigh approximately 10 mg of
Sulfo-NHS into a tube. Repeat for EDC.
Procedure
xMAP Microsphere
Activation
1. Vortex and sonicate the stock microspheres for 20 seconds.
2. Transfer 5.0 × 10
6
of the stock microspheres to a USA Scientific
microfuge tube.
3. Centrifuge the stock microspheres at 8,000 × g for 1 to 2
minutes.
4. Aspirate the supernatant and resuspend the pelleted microspheres
in 100 µL dH
2
O by sonication for approximately 20 seconds.
5. Centrifuge the stock microspheres at 8,000 × g for 1 to 2
minutes.
6. Aspirate the supernatant. Resuspend the washed microspheres in
80 µL of Activation Buffer. Vortex and sonicate for
approximately 20 seconds.
7. Add 10 µL of 50 mg/mL Sulfo-NHS (diluted in Activation
Buffer or dH
2
O) to the microspheres and mix gently by vortex.
8. Add 10 µL of 50 mg/ML EDC (diluted in Activation Buffer or
dH
2
O) to the microspheres and mix gently by vortex.
9. Incubate for 20 minutes at room temperature with gentle mixing
by vortex at 10 minute intervals.
10. Centrifuge the activated microspheres at 8,000 × g for 1 to 2
minutes.
11. Aspirate the supernatant and resuspend the microspheres in 250
µL of Coupling Buffer by vortex and sonication for
approximately 20 seconds (see Technical note 5).
12. Centrifuge the microspheres for 1 to 2 minutes at 8,000 × g.
13. Repeat steps 11 and 12 for a total of two washes with Coupling
Buffer.
14. Resuspend the activated and washed microspheres in 100 µL of
Coupling Buffer. Vortex and sonicate for approximately 20
seconds.
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