Patent application number | Description | Published |
20080220418 | Method For Providing Dna Fragments Derived From An Archived Sample - Aspects of the present invention relate to compositions and methods for providing DNA fragments from an archived sample (e.g., paraffin-embedded and/or fixed-tissue biopsies, etc). Particular aspects provide methods whereby high yields of DNA are isolated as well as a substantial portion of the DNA consists of long DNA fragments, and where the isolated genomic DNA is free of associated or cross-linked contaminants like proteins, peptides, amino acids or RNA. The methods are facile, cost-effective, an are characterized by high reproducibility and reliability. Particular aspects provide methods for providing DNA fragments derived from an archived sample, wherein the yield of DNA before, for example, an amplification step is at least 20%, and amplicons up to a length of about 1,000 base pairs are amplifiable. | 09-11-2008 |
20080286778 | Method for Investigating Cytosine Methylations in Dna - The invention relates to a method for sensitively and specifically detecting cytosine methylations. For this purpose, DNA is first analysed by reacting with the aid of a methylation specific restriction enzyme. In such a way, the background DNA is removed from a reaction preparation. At a next step, a specific conversion of a non-methylated cytosine is carried out, while a methylated cytosine remains unchanged. The converted DNA can be analysed according to different methods, in particular by means of real time PCR method. | 11-20-2008 |
20090004646 | Method for Quantifying Methylated Dna - The inventive method makes it possible to quantify methylated DNA by combining the restricted digestion and real-time PCR. For this purpose, the inventive method consists in isolating the examined DNA from a biological sample, in reacting the isolated AND with a methylation specific restriction enzyme, in amplifying by means of a real-time PCR, wherein the amplified products are formed only when the DNA is precut-off and, afterwards, in calculated the methylated and unmethylated DNA proportion in the initial sample with the aid of a reference measurement. Said method is particularly suitable for diagnosis and prognosis cancer and other diseases associated with a methylation state modification and for predicting the drug effects. | 01-01-2009 |
20090075251 | Method for analysis of cytosine methylation - A method for the analysis of cytosine methylations in DNA is described. Here, the DNA to be investigated is first chemically or enzymatically converted. Then a promoter is introduced into the DNA. After this, the DNA is converted to RNA. The methylation pattern of the DNA can be concluded in different ways by means of an analysis of the RNA. The RNA is preferably fragmented chemically or enzymatically prior to the analysis, whereby the fragmenting results depend on the methylation pattern of the DNA. The method according to the invention is particularly suitable for the diagnosis and prognosis of cancer disorders and other diseases associated with a modification of the methylation pattern. | 03-19-2009 |
20090075260 | Methods and Nucleic Acids For Analysis of Cellular Proliferative Disorders - Aspects of the invention provide methods, nucleic acids and kits for detecting, or for detecting and distinguishing between or among liver cell proliferative disorders or for detecting, or for detecting and distinguishing between or among colorectal cell proliferative disorders. Particular aspects disclose and provide genomic sequences the methylation patterns of which have substantial utility for the improved detection of and differentiation between said class of disorders, thereby enabling the improved diagnosis and treatment of patients. | 03-19-2009 |
20090155857 | Facilitator and method for amplification - Subject matter of the invention is a method for amplification of nucleic acids, wherein a successful binding of a primer and a facilitator onto the template is required for amplification. The invention further comprises the inventive facilitator, inventive kits comprising a facilitator and the use of said inventive method, facilitator or kit. | 06-18-2009 |
20090208941 | Method for investigating cytosine methylations in dna - A method for sensitive and specific detection of cytosine methylation is described wherein the DNA to be analyzed is subjected to initial enrichment. More specifically, said enrichment can be effected in a methylation-specific, sequence-specific or origin-specific fashion. Thereafter, the enriched DNA is converted in a methylation-specific fashion. The converted DNA can be analyzed using various methods, particularly real-time PCR methods. | 08-20-2009 |
20100003680 | Method For Determining The Methylation Rate of a Nucleic Acid - The invention relates to a method for quantitatively determining the methylation rate of a nucleic acid through sequencing. According to the invention, the method comprises at least the following steps: a) treating the nucleic acid with a chemical reagent or an enzyme containing solution, whereby the base pairing behavior of methylated cytosine bases and/or unmethylated cytosine bases of the nucleic acid are altered such that methylated cytosine bases become distinguishable from unmethylated cytosine bases, and b) introducing into the nucleic acid at least one base for generating a sequencing signal to be used as a reference signal for normalization, and c) sequencing the nucleic acid, whereby a signal from each cytosine base of the nucleic acid, or a signal from each guanine base of the nucleic acid and a reference signal from the at least on introduced base is obtained, and d) normalizing the signal obtained from each cytosine base of the nucleic acid, or the signal obtained from each guanine base of the nucleic acid to the reference signal from the at least one introduced base. | 01-07-2010 |
20100184027 | METHODS AND NUCLEIC ACIDS FOR ANALYSES OF CELLULAR PROLIFERATIVE DISORDERS - The invention provides methods, nucleic acids and kits for detecting, or for detecting and distinguishing between or among proliferative disorders. The invention discloses genomic sequences the methylation patterns of which have utility for the improved detection of and differentiation between said class of disorders, thereby enabling the improved diagnosis and treatment of patients. | 07-22-2010 |
20110059432 | METHOD FOR PROVIDING DNA FRAGMENTS DERIVED FROM A REMOTE SAMPLE - Aspects of the present invention relate to compositions and methods for providing DNA fragments from a remote sample. In particular aspects a remote sample comprising DNA is provided, DNA is isolated from the remote sample, and the isolated DNA is treated in a way which allows differentiation of methylated and unmethylated cytosine. Additional, particular embodiments provide compositions and methods for methylation analysis of DNA derived from a remote sample. Other aspects provide for compositions and methods of whole genome amplification of bisulfite treated DNA. | 03-10-2011 |
20110244458 | Methods and Nucleic Acids for Analyses of Cellular Proliferative Disorders - Aspects of the invention provide methods, nucleic acids and kits for detecting, or for detecting and distinguishing between or among liver cell proliferative disorders or for detecting, or for detecting and distinguishing between or among colorectal cell proliferative disorders. Particular aspects disclose and provide genomic sequences the methylation patterns of which have substantial utility for the improved detection of and differentiation between said class of disorders, thereby enabling the improved diagnosis and treatment of patients. | 10-06-2011 |
20140087449 | Method for Providing DNA Fragments Derived from an Archived Sample - Aspects of the present invention relate to compositions and methods for providing DNA fragments from an archived sample (e.g., paraffin-embedded and/or fixed-tissue biopsies, etc.). Particular aspects provide methods whereby high yields of DNA are isolated as well as a substantial portion of the DNA consists of long DNA fragments, and where the isolated genomic DNA is free of associated or cross-linked contaminants like proteins, peptides, amino acids or RNA. The methods are facile, cost-effective, and are characterized by high reproducibility and reliability. Particular aspects provide methods for providing DNA fragments derived from an archived sample, wherein the yield of DNA before, for example, an amplification step is at least 20%, and amplicons up to a length of about 1,000 base pairs are amplifiable. | 03-27-2014 |
20150086989 | METHODS AND NUCLEIC ACIDS FOR ANALYSES OF CELLULAR PROLIFERATIVE DISORDERS - Aspects of the invention provide methods, nucleic acids and kits for detecting, or for detecting and distinguishing between or among liver cell proliferative disorders or for detecting, or for detecting and distinguishing between or among colorectal cell proliferative disorders. Particular aspects disclose and provide genomic sequences the methylation patterns of which have substantial utility for the improved detection of and differentiation between said class of disorders, thereby enabling the improved diagnosis and treatment of patients. | 03-26-2015 |