Regulation of protein synthesis in human cells exposed to extreme hypoxia. 1995

S M Kraggerud, and J A Sandvik, and E O Pettersen
Department of Tissue Culture, Norwegian Radium Hospital, Oslo.

Protein synthesis was recorded in NHIK 3025 cells when cultured either during extremely hypoxic conditions or following reoxygenation. The rate of total protein synthesis in NHIK 3025 cells was found to be reduced to 30-40% of the rate in control cells within 1 h after the start of hypoxia. After reoxygenation, the rate of total protein synthesis was found to increase rapidly back to the control level. To reveal the stage of regulation of hypoxia associated proteins (HAP), mRNA was isolated from NHIK 3025 cells and translated in an in vitro translation kit. The results indicated that the relative amount of mRNA, of at least two HAP (80 and 45 kD), was increased under extremely hypoxic conditions ([O2] < 4ppm). This implies that some HAP are regulated pre-translationally.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D011506 Proteins Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein. Gene Products, Protein,Gene Proteins,Protein,Protein Gene Products,Proteins, Gene
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002584 Cervix Uteri The neck portion of the UTERUS between the lower isthmus and the VAGINA forming the cervical canal. Cervical Canal of the Uterus,Cervical Canal, Uterine,Ectocervix,Endocervical Canal,Endocervix,External Os Cervix,External Os of the Cervix,Uterine Cervical Canal,Cervix,Cervixes,Uterine Cervix,Canal, Endocervical,Canal, Uterine Cervical,Cervix, External Os,Cervix, Uterine,Endocervical Canals,Uterine Cervical Canals
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D005260 Female Females
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000332 Aerobiosis Life or metabolic reactions occurring in an environment containing oxygen. Aerobioses

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