Methods and compositions for assessing a sample by maldi mass spectrometry
First Claim
1. A method for preparing a sample for matrix-assisted laser desorption ionization (MALDI), comprising:
- contacting said sample with a matrix attached to capture agents, wherein said matrix is present in a plurality of wells of a multi-well sample plate;
washing said matrix to provide washed matrix;
contacting said washed matrix with a MALDI cleavage agent to produce a solution containing cleavage-agent treated analytes, if present;
separating said solution from said matrix; and
, depositing said solution onto a MALDI sample plate.
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Abstract
The invention provides methods for preparing a sample for matrix-assisted laser desorption ionization (MALDI). In general, the methods involve: binding analytes in a sample to capture agents that are bound to matrix that is present in a plurality of wells of a multi-well sample plate, washing any unbound analytes from the matrix, cleaving any bound analyte/capture agent complexes with a MALDI cleavage agent, and depositing the cleavage products on a multi-sample MALDI sample plate. Kits and other compositions are provided for performing the subject methods. The subject invention finds use in methods of simultaneously assessing the presence of several analytes in a single sample, and, as such, the invention finds use in a variety of different medical, research and proteomics applications.
52 Citations
22 Claims
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1. A method for preparing a sample for matrix-assisted laser desorption ionization (MALDI), comprising:
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contacting said sample with a matrix attached to capture agents, wherein said matrix is present in a plurality of wells of a multi-well sample plate;
washing said matrix to provide washed matrix;
contacting said washed matrix with a MALDI cleavage agent to produce a solution containing cleavage-agent treated analytes, if present;
separating said solution from said matrix; and
,depositing said solution onto a MALDI sample plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19, 20, 21, 22)
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13. A multi-well sample plate having a plurality of wells, at least one well of which comprises:
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a matrix attached to analyte/capture agent complexes; and
a MALDI cleavage agent. - View Dependent Claims (14, 15, 16, 17)
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18. A system for evaluating a sample, comprising:
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a multi-well sample plate comprising wells having a matrix attached to a capture agent;
a MALDI cleavage agent; and
a MALDI matrix.
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Specification