Abstract:
Present disclosure provides a method including isolating DNA from a source, thereby providing a composition including the isolated DNA. The isolated DNA has at least first and second target regions, where the length of the second target region is greater than the length of the first target region. The method further includes quantifying a total mass of the isolated DNA, quantifying a first quantification cycle (Cq) of the first target region and a second Cq of the second target region, and calculating a Q-ratio for the isolated DNA by dividing the second Cq by the first Cq. The method further includes determining a value for a quality-mass constant (kQm), estimating a required input mass by dividing kQm by the Q-ratio, and preparing the isolated DNA for sequencing if the total mass of the isolated DNA in the composition is equal or greater than the required input mass.
Abstract:
There is provided a method for identifying protein methylation on arginine and lysine residues. The method comprises obtaining a set of peptides; blocking un- methylated arginine and lysine residues and the free N-terminal amine of peptides in the set of peptides, so that un-methylated peptides are neutralized and only methylated peptides are positively charged at neutral or basic pH; isolating the methylated peptides based on charge; and performing mass spectrometry (MS) analysis on the isolated methylated peptides to detect methylated lysine and arginine residues. Methods provided herein can be used for large scale, high throughput profiling of protein methylation in a cell or tissue.
Abstract:
A method of retrieving a subset of polynuceotide molecules from a mixture of polynucleotide molecules includes receiving a mixture of nucleotide sequences comprising one or more polynucleotide molecules, synthesizing one or more identifier (ID) regions onto the one or more polynucleotide molecules. The method also includes generating a bead-bound library of one or more beads comprising subsets of identical polynucleotide molecules. Each bead is identified by the ID Sequence of the associated Polynucleotide Sequence. The method further includes sequencing the one or more ID regions of each bead to generate ID Sequence information for each bead, combining the Polynucleotide Sequence information, the one or more ID Sequences, and coordinates of each bead to identify the Polynucleotide Sequence on the bead, and retrieving the bead with its associated Polynucleotide Sequence from the flow cell based on the absolute coordinate position of the bead.
Abstract:
The invention relates to diagnostic and treatment methods using a ligand library. Specifically, the invention relates to using a ligand library to diagnose or detect a drug induced response, including drug adverse reaction, side effects, drug resistance, and therapeutic efficacy. The invention further relates to identifying biomarkers associated with a drug induced response and providing a personalized medical treatment.
Abstract:
The present invention is useful in screening for biomarkers associated with any other disease or condition. Such diseases and conditions range from the neurological diseases, autoimmune diseases and cancers identified above as well as any other disease or condition that has a biomarker such as an antibody or other characterizing protein or biomolecule associated with the disease or progression of the disease. The large ligand libraries of the invention can be used directly in biological fluid, under the appropriate experimental conditions and according to the processes recited herein, to screen for such markers and without the need to use fewer support members (e.g. about 100,000 or less) or without the need to transfer such peptoids or ligands to a microarray before screening the biological fluid. In addition, the ligand libraries may also be used to screen for cell based receptors that specifically relate to a particular cell surface marker.
Abstract:
Antisense compounds, compositions and methods are provided for modulating the expression of PTEN. The compositions comprise antisense compounds, particularly antisense oligonucleotides, targeted to nucleic acids encoding PTEN. Methods of using these compounds for modulation of PTEN expression and for treatment of diseases associated with expression of PTEN are provided.
Abstract:
In a mass cytometer system, a tissue sample labeled with multiple metal tags is supported on an encoded substrate for distribution profile mapping by laser ablation. Groups of elemental ions from each plume generated by each laser pulse are detected by the mass cytometer and the data is mapped according to the encoded substrate. This configuration allows for the production of a 3-dimentional distribution profile of the multiple metal tags in the tissue sample.
Abstract:
The invention relates to diagnostic and treatment methods using a ligand library. Specifically, the invention relates to using a ligand library to diagnose or detect a drug induced response, including drug adverse reaction, side effects, drug resistance, and therapeutic efficacy. The invention further relates to identifying biomarkers associated with a drug induced response and providing a personalized medical treatment.
Abstract:
The present invention generally relates to various peptides and particles, for example, for use in screening of particle- or bead-based peptide libraries. In one aspect, the present invention is generally directed to articles including peptides attached to one or more particles, which may have structures such as (particle)-M-Q-Z n -X-J, (particle)-M-Q-Z n -X 1 -X 2 -X 3 -X 4 -X 5 -J, (particle)-M-R-Z n -X 1 -X 2 -X 3 -X 4 -X 5 -J, (particle)-M-R- - X 1 -X 2 -X 3 -X 4 -X 5 -Z n -Q-J, (particle)-M-X 1 -X 2 -X- 3 X 4 -X 5 -Z n -R-J, etc., where M is a methionine residue, M1 is a cleavable linker residue, Q is a group able to enhance intensity and/or sensitivity of mass spectrometry, X comprises one or more amino acid residues, n is a positive integer, Z is a covalent bond or a spacer, and J is an endgroup. In some embodiments, the spacer may comprise a structure such as:(I). Other aspects of the present invention generally relate to methods of using such articles, e.g., by exposing the article to a target molecule such as a protein, for example, for use in screening of particle-based peptide libraries. Still other aspects of the present invention generally relate to methods of making such articles, methods of promoting such articles, kits involving such articles, or the like.