In recent years, the application of rare cutting restriction enzymes, the separation of resulting DNA fragments on pulsed-field gels and the subsequent Southern blot analysis using radioactively labeled probes have been standard laboratory methods to create long-range physical maps of complex genomes. The disadvantages of this technology are the hazardous handling risks when working with radioa...

The role of multiple gonadotropin-releasing hormone receptor (GnRH-R) types in the regulation of gonadotropic and nongonadotropic cells remains speculative. To address this issue, we developed a technology integrating laser-captured microdissection of single digoxigenin-labeled pituitary cells coupled with real-time quantitative PCR to examine the expression profiles of three endogenous GnRH-R ...

The Library of Integrated Network-Based Cellular Signatures (LINCS) project aims to create a network-based understanding of biology by cataloging changes in gene expression and signal transduction that occur when cells are exposed to a variety of perturbations. It is helpful for understanding cell pathways and facilitating drug discovery. Here, we developed a novel approach to infer cell-specif...

For a better understanding of epigenetic regulation of cell differentiation, it is important to analyze DNA methylation at a specific site. Although previous studies described methylation of isolated DNA extracted from cells and tissues using a combination of appropriate restriction endonucleases, no application to tissue cell level has been reported. Here, we report a new method, named histo e...

BACKGROUND New methods are required for the exploration of the human genome by discovering sequence variations. This study evaluated the performance of a new method for screening a large number of samples for several DNA polymorphisms. METHODS We used a homogeneous method based on inhibition of spontaneous branch migration by any sequence difference between two molecules of PCR-amplified DNA....

A new ultrasensitive chemiluminoenzyme immunoassay (CLEIA) using digoxigenin-labeled bradykinin (BK) as a tracer is proposed to quantify kinins in tissue samples. Rabbit polyclonal IgGs anti-BK directed against the C-terminal end were used for the immunoconcentration step along with dioxetane derivative for the revelation step. The sensitivity of the assay for BK was 0.1 fmol/ml with ED50 of 0....

247 Abstract: Elevated lipoprotein(a) [Lp(a)] concentrations are associated with premature coronary heart disease and early myocardial infarction. In the general human population the sizes of apolipoprotein [apo(a)] isoforms are inversely associated with lipoprotein(a) levels. Large isoforms are associated with low Lp (a) and small isoforms with high Lp(a) in the plasma. The size of the polymop...

Peptidase D is one of at least six peptide-hydrolyzing enzymes of Escherichia coli (9). By sequence analysis of the 5' flanking and amino-terminal regions of the corresponding gene, pepD, we were able to show that it is contiguous to the adjacent gpt locus (4). Combination of this sequence with the already-known sequences of the gpt (10), phoE (11), and proBA (2) genes and of two additional ope...