Spontaneous delta- to beta-globin switching in K562 human leukemia cells
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چکیده
منابع مشابه
Spontaneous 6- to p-Globin Switching in K562 Human Leukemia Cells
Previous analysis of the hemoglobin phenotype of the K562 human erythroleukemia cell line showed regulated expression of the e, J-. y, a-, and &globin genes. Expression of the p-globin genes has not been previously detected in this cell line. In this report, we describe the isolation of a variant of the K562 cell line that actively expresses @globin messenger RNA (mRNA) and polypeptide and show...
متن کاملSpecific globin mRNAs in human erythroleukemia (K562) cells.
Specific globin mRNA accumulation was quantitated in several lines of K562 cells in the absence and the presence of hemin. Using specific cloned DNA probes, the amounts of zeta, alpha, epsilon and gamma mRNAs were shown to be increased 2-3-fold in the presence of 20 microM hemin. No delta- or beta-globin mRNAs were detectable in any of the lines. In one line, Bos, there was a marked decrease in...
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Background Luteinizing hormone (LH) is a heterodimeric glycoprotein composed of alpha and beta subunits.This hormone is secreted from the pituitary gland. LH, in women triggers Menstrual cycle and ovulation. In men, LH stimulates production of testosterone, which plays a specialized role in sperm production. Up to day, LH hormone have produced in different ways such as codon optimization and al...
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Background Follicle stimulating hormone (FSH)- a hetrodimeric glycoprotein- is secreted by pituitary gland. This hormone stimulates growth and maturation of the follicles in females and sperms in male. Up to now, glycoprotein hormones such as FSH have produced in different cell lines. Among of the mammalian expression systems, the Chinese hamster ovary cells (CHO) have taken into consideration ...
متن کاملDNA-dependent adenosine triphosphatase (helicaselike transcription factor) activates beta-globin transcription in K562 cells.
Correct developmental regulation of beta-like globin gene expression is achieved by preferential transcription of a gene at a given developmental stage, silencing of other beta-like gene promoters, and competition among these promoters for interaction with the locus control region (LCR). Several evolutionarily conserved DNA elements in the promoters of the beta-like genes and LCR have been stud...
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ژورنال
عنوان ژورنال: Blood
سال: 1992
ISSN: 0006-4971,1528-0020
DOI: 10.1182/blood.v79.3.820.bloodjournal793820