стволовые клетки крови лейкозы

Регуляторная the area virus генома (upstream regulatory region, URR) settles down between the end of area of late genes and the beginning of area of early genes. Open frameworks of reading ORF генома a virus are divided{shared} on early (early, Е) and late (late, L) sites. The early fragment includes genes Е1-Е7 coding synthesis of fibers, responsible{crucial} for various functions in process репликации a virus and transformation of cells{cages}. Genes Е1 and Е2 are responsible{crucial} for репликацию a virus, and also participate in regulation of a transcription virus генома. The product of gene Е1 is responsible for maintenance персистенции virus генома in эписомальной to the form. Gene Е2 codes products which can as a trance - activate, and to suppress экспрессию early genes and энхенсерных sites URR. Трансактивирующий the factor is identified in precancer changes шейки a uterus, репрессирующий the factor in vivo is not identified [16]. Gene Е4 participates during maturing virus particles, genes Е5-Е7 possess трансформирующим potential. Genes Е6 and Е7 are always defined{determined} and экспрессируются in tumours шейки a uterus and received of tumours шейки a uterus cellular lines. The biological effect трансформирующего potential of genes Е6 and Е7 will be considered below. The late fragment генома will consist of genes L1 and L2, coding structural fibers вириона [5,21]. Подробнее...

Process of integration is accompanied by partial loss of a genetic material of a virus, thus virus a gene irrespective of делеций loses ability to full репликации, and in the cells{cages} containing integrated cellular gene, there is no production of virus particles. Assume, that integration represents активационный the mechanism of a progression неоплазии from дисплазии a heavy degree to a cancer; she{it} originally carries поликлональный character. Most frequently in канцерогенез шейки a uterus are involved certain{determined} speed up chromosomes 5,6,10,11 and 17. Integration virus ДНК induces instability cellular генома and as consequence{investigation} an induction of infringements in the various chromosomes tested on loss of heterozygosity. The site of primary integration virus ДНК is not determined, quite often it{he} settles down near to cellular онкогенов [4]. Подробнее...