Three mouse models of human thalassemia
- National Institutes of Health, Betheseda, MD
Three types of mice with globin gene mutations, called 352HB, 27HB, and Hba/sup th-J/, appear to be true animal models of human thalassemia. Expression of the ..cap alpha..-globin genes in three stocks of mice, each one heterozygous for one of the ..cap alpha..-globin mutations, was examined at the polypeptide, RNA, and DNA levels. ..cap alpha..-globin polypeptide chains, relative to ..gamma..-globin chains in heterozygous thalassemic mice, are present at approximately 80% of normal. The ratios of ..cap alpha..-globin to ..gamma..-globin RNA sequences are also 75 to 80% normal, exactly reflecting the ..cap alpha..-globin to ..gamma..-globin chain ratios. In the case of mutant 352HB, at least one ..cap alpha..-globin gene is deleted. Thalassemic mouse erythroid cells appear to compensate partially for the loss of half of their ..cap alpha..-globin genes.
- OSTI ID:
- 5952744
- Journal Information:
- Proc. Natl. Acad. Sci. U.S.A.; (United States), Vol. 78:8
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DNA
HYBRIDIZATION
RNA
THALASSEMIA
BIOLOGICAL MODELS
BIOCHEMISTRY
GENES
GENETICS
GLOBIN
MICE
MUTAGENESIS
MUTATIONS
RESEARCH PROGRAMS
US DOE
ANEMIAS
ANIMALS
BIOLOGY
CHEMISTRY
DISEASES
HEMIC DISEASES
MAMMALS
NATIONAL ORGANIZATIONS
NUCLEIC ACIDS
ORGANIC COMPOUNDS
PROTEINS
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SYMPTOMS
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550400* - Genetics