Methods for identifying drug effects on a cell by determining changes in the cell's spliced message profile

摘要

The invention provides products of manufacture for screening for compositions that can modify a cell's gene expression profile, and methods for making and using them. In one embodiment, the invention provides products of manufacture and methods comprising a high content, high throughput screening for a composition (e.g., chemicals, small molecules) that can modify a cell's physiology based on the composition's ability to modify the cell's gene expression signature.

主权项

1. A method for determining whether a test compound modifies or alters gene expression in a cell, comprising:
(a) identifying a gene signature comprising a plurality of genes associated with differences between the beginning and an end stage of a cell type; (b) obtaining mRNA from a control cell not contacted with the test compound; (b1) contacting a test cell with the test compound; (c) obtaining mRNA from the cell that has been contacted with the test compound; (d) contacting the mRNA from (b) and (c) with an oligo-dT linked to a capture moiety to obtain capture-tagged mRNA; (e) contacting the capture-tagged mRNA with a plurality of oligonucleotide pairs that anneal to the plurality of genes, each of the oligonucleotides of the pair of oligonucleotides having a sequence designed to specifically hybridize or anneal to an mRNA message of the plurality of genes such that when both the first and second primer of the primer pair are hybridized or annealed to the mRNA, the first and the second primers can be ligated and wherein the oligonucleotide pairs comprise a sequence complementary to a bar-coded PCR primer; (f) capturing the capture-tagged mRNA comprising annealed oligonucleotide pairs on a solid phase; (g) washing the captured mRNA; (h) ligating adjacent oligonucleotide pairs; (i) denaturing and eluting ligated oligonucleotide pairs; (j) amplifying the ligated oligonucleotide pairs with the bar-coded PCR primer to obtain bar-coded amplicons; (k) sequencing the bar-coded amplicons to obtain sequence information; and (l) determining a difference in the gene signature between the cell not contacted with the test compound compared to the cell contacted with the test compound using the sequence information, wherein finding a difference in the gene signature is indicative of a test compound the modifies gene expression in the cell.