Microfluidic device for purifying a biological component using magnetic beads
First Claim
1. A method of purifying a biological component found in a biological sample by extracting said biological component from said biological sample, said method being performed in a microfluidic device having at least one well for receiving said biological sample and at least one channel for introducing and removing fluids in performing the present method, said method comprising providing a plurality of magnetic beads having a factor with an affinity for said biological component, introducing said magnetic beads into said well together with said biological sample, manipulating said biological sample to release said biological component in proximity to said magnetic beads, magnetically segregating said magnetic beads within said well, removing said biological sample from said well, introducing an elution solution for said biological component into said well and removing said elution solution together with said biological component from said well.
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Abstract
A method of purifying a biological component found in a biological sample by extracting the biological component from the biological sample. The method is performed using a microfluidic device having at least one well for receiving the biological sample and at least one channel for introducing and removing fluids. A plurality of magnetic beads having a factor with an affinity for the biological component is introduced to the well together with a suitable biological sample. The biological sample is manipulated to release the biological component in proximity to the magnetic beads which are then segregated within the well while removing the biological sample. An elution solution for the biological component is introduced to the well and the elution solution together with the biological component are withdrawn therefrom.
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Citations
17 Claims
- 1. A method of purifying a biological component found in a biological sample by extracting said biological component from said biological sample, said method being performed in a microfluidic device having at least one well for receiving said biological sample and at least one channel for introducing and removing fluids in performing the present method, said method comprising providing a plurality of magnetic beads having a factor with an affinity for said biological component, introducing said magnetic beads into said well together with said biological sample, manipulating said biological sample to release said biological component in proximity to said magnetic beads, magnetically segregating said magnetic beads within said well, removing said biological sample from said well, introducing an elution solution for said biological component into said well and removing said elution solution together with said biological component from said well.
- 11. A method of purifying a biological component found in a biological sample by extracting said biological component from said biological sample, said method being performed in a microfluidic device having a well for receiving said biological sample and a channel for introducing and withdrawing fluids into and from said well, said method comprising providing a plurality of magnetic beads having a factor with an affinity for said biological component, introducing said magnetic beads to said well together with said biological sample, manipulating said biological sample to release said biological component in proximity to said magnetic beads, magnetically segregating said magnetic beads proximate said channel, introducing a wash liquid to said well through said channel for washing said biological sample from said magnetic beads and maintaining a volume of wash liquid between said magnetic beads and said biological sample, introducing an elution solution for said biological component from said channel, said elution solution residing in proximity to said wash liquid and spaced from said biological sample, and removing said elution solution and biological component from said well through said channel.
- 16. A method of purifying a biological component found in a biological sample by extracting said biological component from said biological sample, said method being performed in a microfluidic device comprising a well for receiving said biological sample and a first and a second channel for introducing and withdrawing fluids into and from said well, said method comprising providing a plurality of magnetic beads having a factor with an affinity for said biological component, introducing said magnetic beads to said well together with said biological sample, manipulating said biological sample to release said biological component in proximity to said magnetic beads, magnetically segregating said magnetic beads proximate said first channel, introducing a wash liquid through said first channel and drawing said wash liquid and biological sample from said well through said second channel, introducing an elution solution for said biological sample through said first channel in proximity to said magnetic beads, and removing said elution solution together with said biological component from said well through said first channel.
Specification