Array devices and methods of use thereof
Arrays of protein-capture agents useful for the simultaneous detection of a plurality of proteins which are the expression products, or fragments thereof, of a cell or population of cells in an organism are provided. A variety of antibody arrays, in particular, are described. Methods of both making and using the arrays of protein-capture agents are also disclosed. The invention arrays are particularly useful for various proteomics applications including assessing patterns of protein expression and modification in cells.
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7 . A method for making an array of one or more biomolecules for use in analyzing molecular events between one or more of said biomolecules and one or more analytes comprising:
i) providing the array device comprising:
a) a substrate having at least one surface;
b) one or more immobilization regions formed on said known regions of said surface(s), wherein said immobilization regions are adapted for attaching said biomolecules to said surface; and,
c) one or more border regions formed on said surface surrounding said immobilization regions, said border region(s) having a first wettable state and a selectively achievable second wettable state different from said first wettable state;
ii) depositing a first liquid containing at least one of said biomolecules onto at least one selected immobilization region such that said first liquid deposited is maintained within said selected region in-part by said first wettable state of at least one of said border regions;
iii) allowing at least one of said biomolecules contained in said deposited first liquid to attach to said surface within said selected immobilization regions;
iv) removing said first liquid from said selected immobilization region;
v) activating said border region(s) partly or wholly maintaining said first liquid within said selected immobilization regions such that such border regions partly or wholly maintaining said liquid within said selected immobilization regions no longer are capable of maintaining said first liquid, or a second liquid within said selected immobilization region.
8 . A method of carrying out a molecular reaction on a surface of an array comprising the steps of:
i) providing said array device which comprises:
a. a substrate having at least one surface;
b. one or more reaction regions formed on said known regions of said surface(s), wherein said reaction regions are adapted for reacting molecules adjacent said surface; and,
c. one or more border regions formed on said surface surrounding said reaction regions, said border region(s) having a first wettable state and a selectively achievable second wettable state different from said first wettable state;
ii) depositing a first liquid containing at least one of said molecules onto at least one selected reaction region such that said first liquid deposited maintained within said selected reaction region in-part by said first wettable state of at least one of said border regions;
iii) allowing at least one of said biomolecules contained in said deposited first liquid to contact said surface within said selected reaction regions;
iv) removing said first liquid from said selected reaction regions;
v) activating said border region(s) partly or wholly maintaining said first liquid within said selected reaction regions such that said border regions partly or wholly maintaining said liquid within said selected reaction regions no longer are capable of maintaining said first liquid, or a second liquid within said selected reaction regions.