Western blot by incorporating an affinity purification zone
First Claim
Patent Images
1. A microfluidic device for detecting one or more component of interest in a mixture of components, the device comprising:
- (i) a body structure with a plurality of microscale channels disposed therein, the plurality of microscale channels comprising;
(a) a separation channel region for separating the mixture of components; and
,(b) a binding region upstream from and fluidly connected to the separation channel region, which binding region comprises a component-binding moiety, for binding the one or more component of interest to the component-binding moiety prior to separating the mixture of components;
(ii) a control system operably coupled to the body structure, which control system directs;
(a) flow of the mixture of components through the binding region, thereby binding the one or more component of interest to the component binding moiety, resulting in one or more bound component of interest;
(b) flow of the mixture of components through the separation channel region after flowing the mixture of components through the binding region, thereby separating the mixture of components resulting in one or more separated components;
(c) release of the one or more bound component of interest from the binding channel, resulting in one or more released component of interest; and
,(d) flow of the one or more released component of interest through the separation channel region.
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Abstract
An upstream affinity purification region is used to bind one or more component of interest in a mixture of components prior to separating the mixture of components. Detection of the separated components and a released component of interest provide identification of the component of interest. In addition, post separation dilution is optionally used to improve detection of the mixture of components and the released component of interest. Microfluidic devices and systems suitable for performing such analyses are also provided.
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Citations
33 Claims
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1. A microfluidic device for detecting one or more component of interest in a mixture of components, the device comprising:
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(i) a body structure with a plurality of microscale channels disposed therein, the plurality of microscale channels comprising; (a) a separation channel region for separating the mixture of components; and
,(b) a binding region upstream from and fluidly connected to the separation channel region, which binding region comprises a component-binding moiety, for binding the one or more component of interest to the component-binding moiety prior to separating the mixture of components; (ii) a control system operably coupled to the body structure, which control system directs; (a) flow of the mixture of components through the binding region, thereby binding the one or more component of interest to the component binding moiety, resulting in one or more bound component of interest; (b) flow of the mixture of components through the separation channel region after flowing the mixture of components through the binding region, thereby separating the mixture of components resulting in one or more separated components; (c) release of the one or more bound component of interest from the binding channel, resulting in one or more released component of interest; and
,(d) flow of the one or more released component of interest through the separation channel region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification