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The question of nucleosome phasing on African Green Monkey (AGM) alpha-satellite DNA has been addressed by employing a new approach. Nucleosome cores were prepared from AGM nuclei with micrococcal nuclease, exonuclease III and nuclease S1. The core DNA population derived from alpha-satellite DNA containing chromatin was purified from total core DNA by(More)
The nucleotide sequence of a cloned Muntjak satellite IA repeat unit (Muntiacus muntjak vaginalis) was determined. The repeat is 807 base pairs (bp) long. By introducing minor deletions and insertions, the whole sequence of the satellite can be arranged in 27 subrepeats of 31 bp length. Although diverged relative to each other, all subrepeats show a(More)
Using gene-specific synthetic oligonucleotides the expression and regulation of kallikrein-like genes in the human prostatic cancer cell line LNCaP were studied. Prostate-specific antigen (PSA) and human glandular kallikrein (hGK-1) together constitute a subfamily of serine proteases exclusively produced in the human prostate. RNA analysis revealed that(More)
The mechanism of down-regulation of c-myc RNA associated with androgen-induced suppression of the transformed phenotype in the human prostate carcinoma cell line LNCaP was investigated. The synthetic androgen mibolerone (7 alpha-17 alpha-Dimethyl-19-nortestosterone) reversibly inhibits the proliferation of LNCaP cells and, from 12-72 h after hormone(More)
From the analysis of two overlapping cosmid clones prepared from human genomic DNA libraries, a contig of 44 kb containing a 5' portion of the PAP gene and 17 kb of the upstream region was established. It was characterized by restriction mapping and sequence analysis of 2.5 kb upstream of the initiation codon. Two major transcription initiation sites were(More)
Experiments have been designed to investigate hormonal effects on the human prostatic carcinoma cell line LNCaP in the presence of complete foetal calf serum. At physiological concentrations (3.3 x 10(-9)M), several derivatives of 17 alpha-methyl-testosterone led to a significant reduction of cell proliferation, inhibition of colony formation in soft agar,(More)
The sequence specificity of micrococcal nuclease complicates its use in experiments addressed to the still controversial issue of nucleosome phasing. In the case of alpha-satellite DNA containing chromatin from African green monkey (AGM) cells cleavage by micrococcal nuclease in the nucleus was reported to occur predominantly at only one location around(More)
alpha-Satellite DNA containing chromatin from African green monkey cells (CV-1 cells) has been used to study the question whether or not nucleosomes are arranged in phase with the 172 bp repeat unit of the satellite DNA. Digestion experiments with DNAase II led us to exclude a simple phase relationship between the nucleosomal and the satellite DNA repeats.(More)
In previous work (P. Schulz et al., Cancer Res., 48: 2867-2870, 1988) we have demonstrated that diethylstilbestrol (DES), DES-monophosphate, and DES-diphosphate (DESDP) are generally cytotoxic at concentrations attained in patients' sera during therapeutic DESDP infusions for progressed carcinoma of the prostate. We have extended this work and addressed two(More)