Yale University

Other

Molecular Staging Inc.

New York University

Xinghua Pan

Sherman M Weissman

Roger S Lasken

Frank P Marchese

Harold Mermelstein

David Keefe

Fang Wang

Lin Liu

Methods of identifying DNase I Hyper-Resistant Sites (DHRS), or in board sense, highly compact chromatin and characterizing the DNA methylation status of DMRs such as CpG islands and CpG island shores are provided. The methods are particularly useful for analysis of genomic DNA from low quantities of cells, for example, less than 1,000 cells, less than 100 cells, less than 10 cells, or even one cell, and can be used to generate chromatin and methylation profiles. The downstream analyses include in parallel massive sequencing, microarray, PCR and Sanger sequencing, hybridization and other platforms. These methods can be used to generate chromatin and DNA methylation profiles in drug development, diagnostics, and therapeutic applications are also provided.

Methods for closed chromatin mapping and DNA methylation analysis for single cells

The invention relates to a method for single cell analysis of relative telomere length using multiplex pre-PCR followed by a qPCR (SCT-pqPCR).

Method for single cell analysis of telomere length using pre-amplification and multiple-copy reference sequence

Methods for preparing cDNA libraries from single and low quantities of cells are disclosed. The methods are based on the principles of multi-strand displacement amplification or semi-random primed polymerase chain reaction. The methods typically include a step of reverse transcription and subsequent amplification of cDNA. The methods can be adapted for preparation of cDNA libraries that are representative of mRNA or whole RNA expressed by the cell or cells. The cDNA is suitable for sequencing or microarray analysis.

Methods for preparing cDNA from low quantities of cells

A topical drying composition is providing containing trehalose as the effective moisture (sweat) removing ingredient. The composition may be used in aqueous form or preferably as a cream and in addition to trehalose it contains several ingredients such as sorbitan monolaurate, polysorbitan, a moisturizer, a thickener, a softener, an antibacterial agent and a pH adjusting component to adjust the pH of the composition between about 5.5 to about 7.5. Sterilized water is used as the carrier for the composition. The topical composition can be applied to the area which is vulnerable to sweating after vigorous exercise in order to moisturize sweating on the skin.

Trehalose-containing topical drying composition and method of using same

An improved method for screening genomic, cDNA, or any DNA fragments in general is described. Novel adapters are ligated to the ends of DNA fragments from two different individuals or two different pools of individuals. The DNA fragment-adapter complexes are mixed, denatured and reannealed to form homohybrid and heterohybrid DNA duplexes, which are separated based on characteristics of the adapters. Sequence differences between heterohybrids can be revealed as mismatched base pairs in the heterohybrid DNA duplex. Mismatch base pairs are discovered using genome mismatch scanning techniques that use thymine glycosylases and related enzymes that capture DNA containing mismatched base pairs. The perfectly base paired DNA or DNA containing mismatched base pairs can be further separated into homohybrids and heterohybrids using novel adapters that allow physical capture of either heterohybrid or homohybrid DNA.

Methods for identifying genes associated with diseases or specific phenotypes

Genomic or cDNA, or fragments and mixtures thereof, can be screened by generation of subsets and then subjecting the subsets to mismatch scanning procedures. Alternatively, DNA fragments can be generated by cutting with a restriction endonuclease that generates variable overhangs. For either of the above methods, Y-shaped adapters having a region of non-complementary single-stranded DNA at the end can be used. Heterohybrid DNA, containing one DNA strand derived from each of two different samples, or homohybrids, containing DNA strands from the same sample, can be selected. Adapters attached to the ends of the fragments are designed to allow the selective isolation of homohybrid or heterohybrid DNA.

Growing community of inventors

Hamden, CT, United States of America

Xinghua Pan