Introduction: Auger electron based radioimmunotherapy (RIT) using 111In-DOTA-trastuzumab (111In-DOTA-antiHer2) feasibility was studied in vitro on a HER2/neu positive cell line, SkBr3. Methods: 111In-DOTA-antiHer2 was prepared according to the optimized conditions followed by quality control tests including radiochemical purity; immunoreactivity). SkBr3 as a HER2/neu positive cell line was used...

Plasmid DNA is being used successfully as a gene delivery vector in a variety of clinical applications. Similar to other pharmaceutical products for clinical use, the plasmid vectors must meet rigorous purity standards. One important contaminant is the DNA of the host cell used to produce the plasmids. We have developed a new method to accurately quantitate E. coli host-cell DNA in plasmid prep...

A flow microfluorometer was used to measure metaphase chromosomes in suspension at rates up to 100,000 per min. Chromosomes from cells of the Chinese hamster M3-1 cell line were isolated, stained for DNA with the fluorescent dye ethidium bromide, and analyzed for DNA content. Nine distinct peaks were resolved that correspond well with independent chromosomal DNA measurements made with a high-re...

Broad-spectrum analysis of DNA and RNA samples is of increasing importance in the growing field of biotechnology. We show that nanopore measurements may be used to assess the purity, phosphorylation state, and chemical integrity of nucleic acid preparations. In contrast with gel electrophoresis and mass spectrometry, an unprecedented dynamic range of DNA sizes and concentrations can be evaluate...

Mitochondrial (mt) nucleoids were isolated with a high degree of purity from the yeast Pichia judinii, in which the mitochondrial DNA (mtDNA) is linear. Field-inversion gel electrophoresis (FIGE) reyealed that significant amounts of mtDNA could be isolated intact, as linear molecules of 41 kbp, from the isolated mt-nucleoids. Fifteen different proteins were detected in the mt-nucleoid fraction ...

DNA detection of porcine species in processed meat samples (shredded meat) was carried out as an effort to enrich the literature and reference alternative testing methods control halal products circulating Indonesia. The purpose this study detect using real-time PCR. research method used is a qualitative technique. This technique analyzes CT value sample compared positive by looking at formatio...

Medicinal plant species has a valuable economic importance because of its usage as pharmaceuticals, nutritional, as well as its use in popular medication. For DNA-based techniques, nanogram quantities of the purified DNA are requisite to amplify and yield sufficient amounts of PCR products. SDS-based DNA isolation method was used to extract DNA from 11 species of different aromatic and me...

Therapeutic proteins produced using recombinant DNA technologies are generally complex, heterogeneous, and subject to a variety of enzymatic or chemical modifications during expression, purification, and long-term storage. Hence the analytical strategies for characterization, quantitation, purity assay and evaluation of the biological activity of recombinant proteins still represent a big chall...

Light harvesting nanostructure hybrids have been designed and demonstrated using single-wall carbon nanotubes (SWCNTs) and porphyrin chromophores. DNA oligonucleotides are used to conjugate SWCNTs with light-absorbing chromophores for transparent films which generate photocurrents. High-purity semiconducting SWCNTs demonstrate significant enhancement in the photocurrent compared to metallic or ...