PMID: 6974570Jul 24, 1981Paper

On the differential suppression of cholesterol synthesis by low density lipoprotein in B and T lymphocytes

Biochimica Et Biophysica Acta
A SanghviV Warty

Abstract

Cholesterol synthesis and its suppression by low density lipoprotein cholesterol were measured in purified B and T peripheral blood lymphocytes. After preincubation for 53 h in lipoprotein-deficient serum, both B and T cells exhibited increased cholesterol synthesis as compared with synthesis measured in cells immediately after their isolation from blood and without preincubation with lipoprotein-deficient serum. The magnitude of this increase was far greater in T cells in comparison with that in B cells in all subjects studied. But, whereas there was an immediate and progressive suppression of cholesterol synthesis in lipoprotein-deficient serum-incubated T cells as the concentration of low density lipoprotein cholesterol in the medium was increased, synthesis in lipoprotein-deficient serum-incubated B cells remained insensitive to the presence of low density lipoprotein in the medium. Hydroxymethylglutaryl-CoA reductase activity was observed also to follow a similar pattern in both cell types. These observations may imply that one or more events, including binding of low density lipoprotein to its receptor, internalization and degradation of low density lipoprotein receptor complex finally leading to suppression of hydroxymet...Continue Reading

References

Dec 1, 1976·The Journal of Clinical Investigation·Y K HoJ L Goldstein
Jul 1, 1977·Clinica Chimica Acta; International Journal of Clinical Chemistry·W Chao, M M Yokoyama
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