Method for the detection of gene with DNA micro-array

1. A method for the detection of a nucleic acid, comprising the steps of:

performing a PCR reaction or a reverse transcription reaction on a template nucleic acid in the presence of a solid support on which a nucleic acid is fixed; and then

hybridizing the nucleic acid fixed on said solid support with the nucleic acid synthesized by the PCR reaction or the reverse transcription reaction, wherein the hybridizing step is carried out after the PCR reaction or the reverse transcription reaction by selecting a suitable hybridization temperature and without moving the solid support;

wherein a nucleotide to which a detectable label is introduced is synthesized in the PCR reaction or the reverse transcription reaction.

2. The method for the detection according to claim 1 , wherein the nucleic acid is fixed on the surface of the solid support to which a group of vinylsulfonyl group or its reactive precursor has been fixed respectively by covalent bond via a linking group.

3. The method for the detection according to claim 2 , wherein a linked body of the vinylsulfonyl group or its reactive precursor and the linking group is shown by the following formula:

—L—SO 2 —X

in the formula, X represents —CR 1 ═CR 2 (R 3 ) or —CH(R 1 )—CR 2 (R 3 )(Y); each of R 1 , R 2 and R 3 represents independently from each other an atom or a group selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 20 carbon atoms and an aralkyl group having 7 to 26 carbon atoms in total containing an alkyl chain having 1 to 6 carbon atoms; Y represents an atom or a group selected from the group consisting of a halogen atom, —OSO 2 R 11 , —OCOR 12 , —OSO 3 M and a quatemary pyridinium group; R 11 represents a group selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 20 carbon atoms and an aralkyl group having 7 to 26 carbon atoms in total containing an alkyl chain having 1 to 6 carbon atoms; R 12 represents a group selected from the group consisting of an alkyl group having 1 to 6 carbon atoms and a halogenated alkyl group having 1 to 6 carbon atoms; M represents an atom or a group selected from the group consisting of a hydrogen atom, an alkali metal atom and an ammonium group; and L represents a linking group.

4. The method for the detection according to claim 3 , wherein X is a vinyl group represented by —CH═CH 2 .

5. The method for the detection according to claim 3 , wherein L is a linking group containing an atom of bivalent or more other than a carbon atom.

6. The method for the detection according to claim 3 , wherein L is a linking group having a linking portion selected from the group consisting of —NH—, —S— and —O—.

7. The method for the detection according to claim 3 , wherein L is a linking group represented by —(L 1 ) n —NH—(CR 1 R 2 ) 2 — or —(L 1 ) n —S—(CR 1 R 2 ) 2 —; L 1 represents a linking group; and n is 0 or 1.

8. The method for the detection according to claim 3 , wherein L is a linking group represented by —(L 1 ) n —NHCH 2 CH 2 — wherein L 1 represents a linking group; and n is 0 or 1.

9. The method for the detection according to claim 7 or 8 , wherein L 1 is a linking group containing a group represented by —OSi— and n is 1.

10. The method for the detection according to claim 1 , wherein the solid support is a sheet-like substrate selected from the group consisting of a glass substrate, a resin substrate, a glass substrate or a resin substrate the surface of which is treated with a silane coupling agent, and a glass substrate or a resin substrate having a covering layer on its surface.

11. The method for the detection according to claim 10 , wherein the solid support is a sheet-like substrate selected from the group consisting of a silicate glass substrate, a silicate glass substrate the surface of which is treated with a silane coupling agent, and a silicate glass substrate the surface of which is covered with an organic covering layer.

12. The method for the detection according to claim 1 , wherein the nucleic acid fixed on the solid support is a nucleotide derivative or its analog.

13. The method for the detection according to claim 12 , wherein the nucleotide derivative or its analog is an oligonucleotide, a polynucleotide or a peptide nucleic acid.

14. The method for the detection according to claim 1 , wherein said PCR reaction conditions comprise 25 cycles of 30 seconds at 95° C., 30 seconds at 55° C. and 90 seconds at 72° C.

15. The method for the detection according to claim 1 , wherein said hybridization occurs after 3 minutes at 72° C. and 2 hours at 60° C.