Abstract: The invention provides systems, methods and kits for the separation and/or purification of at least two cellular components selected from genomic DNA, RNA and proteins. The method includes first lysing a biological sample to generate an aqueous solution containing the cellular components; then applying the aqueous solution to a first mineral support under conditions for genomic DNA to bind; and collecting the flowthrough which contains unbound total RNA and proteins. The method further includes applying the flowthrough to a second mineral support under conditions for RNA to bind, and collecting the flowthrough which contains proteins. The genomic DNA and total RNA bound can be eluted while the protein in the flowthrough can be further purified. Further the total RNA isolated could be used to isolate small RNA such as microRNA.

Abstract: This invention relates to a simple and rapid method for the extraction and purification of small RNA from a sample solution. Accordingly, a sample is first mixed with an organic solvent to form a mixture containing the solvent. The mixture is applied to a first mineral support for large RNA to bind. The filtrate is collected which contain unbound small RNA, and is mixed with a second organic solvent to form a second mixture containing the second solvent. This second mixture is applied to a second mineral support for small RNA to bind. After a wash step, the small RNA is eluted. Also provided is a method for the isolation of large RNA, by eluting the large RNA from the first mineral support. In addition, total protein is present in the filtrate and can be isolated by a conventional method.

Abstract: Improved processes for the amplification of target DNA sequences in the form of single or double stranded circular DNA molecules, especially those present in colony and plaque extracts, using multiple specific and/or random sequence oligonucleotide primers are disclosed. The product of this amplification is used for analysis by restriction enzyme digestion or DNA sequencing and other analyses that involve hybridization. Kits containing components for use in the method are also described. Also described are further uses of this amplified DNA in sequencing, genotyping and haplotyping, and other molecular biology applications.

Abstract: The invention provides systems, methods and kits for the separation and/or purification of at least two cellular components selected from genomic DNA, RNA and proteins. The method includes first lysing a biological sample to generate an aqueous solution containing the cellular components; then applying the aqueous solution to a first mineral support under conditions for genomic DNA to bind; and collecting the flowthrough which contains unbound total RNA and proteins. The method further includes applying the flowthrough to a second mineral support under conditions for RNA to bind, and collecting the flowthrough which contains proteins. The genomic DNA and total RNA bound can be eluted while the protein in the flowthrough can be further purified. Further the total RNA isolated could be used to isolate small RNA such as microRNA.