Methods and nucleic acids for the analysis of gene expression associated with the development of prostate cell proliferative disorders
The following application provides methods and nucleic acids for the detection of and/or differentiation between prostate cell proliferative disorders. This is achieved by the analysis of the expression status of a panel of genes, or subsets thereof.
1. A method for analyzing methylation status in a prostate sample in a subject, comprising:
a) obtaining from the subject a biological sample comprising prostate genomic DNA;
b) contacting Histone H4 genomic DNA as set forth in SEQ ID NO: 36, or a nucleic acid sequence 100% complementary thereto, in the biological sample with bisulfite to provide pre-treated DNA sequences selected from the group consisting of SEQ ID NO: 130, 131, 248, and 249 or nucleic acid sequences 100% complementary thereto; and
c) determining the CpG methylation status of at least one CpG dinucleotide within: SEQ ID NO: 36 or a nucleic acid sequence 100% complementary thereto; or the pre-treated DNA or nucleic acid sequences 100% complementary thereto.
2. The method of claim 1 , wherein distinguishing between methylated and non-methylated CpG dinucleotide sequences comprises converting unmethylated cytosine bases within the target sequence to uracil or to another base that is detectably dissimilar to cytosine in terms of hybridization properties.
3. The method of claim 1 , wherein distinguishing between methylated and non-methylated CpG dinucleotide sequences comprises methylation state-dependent conversion or non-conversion of at least one CpG dinucleotide sequence to the corresponding converted or non-converted dinucleotide sequence within the pre-treated sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, and 249.
4. The method of claim 1 , wherein the biological sample is selected from the group consisting of cell lines, histological slides, biopsies, paraffin-embedded tissue, bodily fluids, ejaculate, urine, blood, and combinations thereof.
5. A method for detecting, or detecting and distinguishing between or among prostate cell proliferative disorders in a subject, comprising:
a. obtaining, from the subject, a biological sample having prostate genomic DNA;
b. isolating the genomic DNA;
c. treating the genomic DNA of b) with at least one reagent to convert cytosine bases that are unmethylated in the 5-position thereof to uracil or to another base that has detectably dissimilar hybridization properties compared to cytosine to provide pre-treated DNA sequences, wherein the pre-treated DNA sequences are derived from Histone H4 genomic DNA according to SEQ ID NO: 36 and are selected from the group consisting of SEQ ID NO: 130, 131, 248, and 249; and
d. contacting the pre-treated genomic DNA with an amplification enzyme and at least two primers, wherein each primer comprises a single stranded nucleic acid at least 9 nucleotides in length that hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249 and nucleic acid sequences 100% complementary thereto, wherein the pre-treated genomic DNA is either amplified to produce at least one amplificate, or is not amplified, wherein the amplification is methylation specific for at least one CpG dinucleotide of a sequence within Histone H4 genomic DNA as set forth in SEQ ID NO:36; and
e. determining, based on a presence or absence of an amplificate, a methylation state of at least one CpG dinucleotide of a sequence within SEQ ID NO: 36, or an average, or a value reflecting an average methylation state of a plurality of CpG dinucleotides of a sequence within SEQ ID NO: 36, wherein a higher degree of CpG methylation in the sample, compared to that of a normal control, indicates a presence or distinguishes between prostate cell proliferative disorders, thereby detecting and/or distinguishing between or among prostate cell proliferative disorders in the subject.
6. The method of claim 5 , wherein treating the at least one reagent is selected from the group consisting of bisulfite, hydrogen sulfite, disulfite, and combinations thereof.
7. The method of claim 5 , wherein contacting or amplifying in d) comprises use of at least one method selected from the group consisting of: use of a heat-resistant DNA polymerase as the amplification enzyme; use of a polymerase lacking 5′-3′ exonuclease activity; use of a polymerase chain reaction (PCR); generation of a amplificate nucleic acid molecule carrying a detectable labels; and combinations thereof.
8. The method of claim 7 , wherein the detectable amplificate label is selected from the label group consisting of: fluorescent labels; radionuclides or radiolabels; amplificate mass labels detectable in a mass spectrometer; detachable amplificate fragment mass labels detectable in a mass spectrometer; amplificate, and detachable amplificate fragment mass labels having a single-positive or single-negative net charge detectable in a mass spectrometer; and combinations thereof.
9. The method of claim 5 , wherein the biological sample obtained from the subject is selected from the group consisting of cell lines, histological slides, biopsies, paraffin-embedded tissue, bodily fluids, ejaculate, urine, blood, and combinations thereof.
10. The method of claim 5 , wherein contacting or amplifying in d), comprises use of methylation-specific primers.
11. The method of claim 5 comprising in d) using primer oligonucleotides comprising one or more CpG; TpG or CpA dinucleotides; and further comprising in e) the use of at least one method selected from the group consisting of: hybridizing in at least one nucleic acid molecule or peptide nucleic acid molecule comprising a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto; hybridizing at least one nucleic acid molecule that is bound to a solid phase and comprises a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto; hybridizing at least one nucleic acid molecule comprising a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto, and extending at least one such hybridized nucleic acid molecule by at least one nucleotide base; and sequencing in e) of the amplificate.
12. The method of claim 5 comprising in d) use of at least one nucleic acid molecule or peptide nucleic acid molecule comprising in each case a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto, wherein said nucleic acid molecule or peptide nucleic acid molecule suppresses amplification of the nucleic acid to which it is hybridized; and further comprising in e) the use of at least one method selected from the group consisting of: hybridizing in at least one nucleic acid molecule or peptide nucleic acid molecule comprising a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto; hybridizing at least one nucleic acid molecule that is bound to a solid phase and comprises a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto; hybridizing at least one nucleic acid molecule comprising a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto, and extending at least one such hybridized nucleic acid molecule by at least one nucleotide base; and sequencing in e) of the amplificate.
13. The method of claim 5 , comprising in d) amplification by primer oligonucleotides comprising one or more CpG; TpG or CpA dinucleotides and further comprising in e) hybridizing at least one detectably labeled nucleic acid molecule comprising a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249.
14. The method of claim 5 , comprising in d) the use of at least one nucleic acid molecule or peptide nucleic acid molecule comprising in each case a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249, and nucleic acid sequences 100% complementary thereto, wherein said nucleic acid molecule or peptide nucleic acid molecule suppresses amplification of the nucleic acid to which it is hybridized, and further comprising in e) hybridizing at least one detectably labeled nucleic acid molecule comprising a contiguous sequence at least 9 nucleotides in length that is 100% complementary to, or hybridizes under stringent conditions to a sequence selected from the group consisting of SEQ ID NO: 130, 131, 248, 249.
15. A method for analyzing methylation status in a prostate sample in a subject, comprising:
a) obtaining, from the subject, a biological sample having prostate genomic DNA; b) isolating the genomic DNA; c) contacting Histone H4 genomic DNA as set forth in SEQ ID NO: 36, and sequences that hybridize under stringent conditions thereto, in the DNA isolated in b) with one or more methylation-sensitive restriction enzymes, wherein the genomic DNA is, with respect to each cleavage recognition motif thereof, either cleaved thereby to produce cleavage fragments, or not cleaved thereby; and
d) determining, based on a presence or absence of, or on property of at least one such cleavage fragment, the methylation state of at least one CpG dinucleotide of SEQ ID NO: 36, or an average, or a value reflecting an average methylation state of a plurality of CpG dinucleotides of SEQ ID NO: 36.
16. The method of claim 15 , further comprising, prior to determining in d), amplifying of the digested or undigested genomic DNA.
17. The method of claim 16 , wherein amplifying comprises use of at least one method selected from the group consisting of: use of a heat resistant DNA polymerase as an amplification enzyme; use of a polymerase lacking 5′-3′ exonuclease activity; use of a polymerase chain reaction (PCR); generation of a amplificate nucleic acid carrying a detectable label; and combinations thereof.
18. The method of claim 17 , wherein the detectable amplificate label is selected from the label group consisting of: fluorescent labels; radionuclides or radiolabels; amplificate mass labels detectable in a mass spectrometer; detachable amplificate fragment mass labels detectable in a mass spectrometer; amplificate, and detachable amplificate fragment mass labels having a single-positive or single-negative net charge detectable in a mass spectrometer; and combinations thereof.
19. The method of claim 15 , wherein the biological sample obtained from the subject is selected from the group consisting of cell lines, histological slides, biopsies, paraffin-embedded tissue, bodily fluids, ejaculate, urine, blood, and combinations thereof.
20. The method of claim 1 , wherein prostate cancer, prostate carcinoma or prostate neoplasm is detected or distinguished.