PMID: 1588124Jun 1, 1992Paper

LDL receptors in keratinocytes

The Journal of Investigative Dermatology
M PonecB J Vermeer

Abstract

The presence of sufficient amounts of cholesterol in the epidermis is necessary for proper functioning of plasma membranes in the viable epidermal cell layers and also for the barrier quality of lipid intercellular bilayers of the stratum corneum. Cholesterol can be generated by local epidermal synthesis, or imported from the circulation as low-density lipoprotein (LDL), which is internalized by the cells by receptor-mediated endocytosis. Because of the complex structure of the skin, a model consisting of cultured human keratinocytes has been used to study in detail the regulation of epidermal sterologenesis in relation to keratinocyte differentiation. Experimental modulation of the differentiation of normal human keratinocytes has been achieved by varying extracellular calcium concentration or by comparison of a number of human squamous carcinoma cell lines and normal keratinocytes. These studies have clearly demonstrated a reciprocal correlation between the ability of cells to differentiate and LDL receptor activity. Regulation of LDL receptor expression has been found to occur at the DNA, mRNA, and protein levels, depending on the cell line studied. In normal but not malignant keratinocytes, the induction of keratinocyte dif...Continue Reading

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Citations

Jan 1, 1995·European Journal of Clinical Investigation·E MalleG M Kostner
Feb 13, 2002·Electrophoresis·Hiroko FurumotoKazuyuki Nakamura
Feb 12, 2014·Dermato-endocrinology·Eugenia Cutillas-MarcoMaría M Morales-Suárez-Varela
Nov 26, 2009·Tissue Engineering. Part a·Varsha S ThakoersingJoke A Bouwstra
May 6, 2009·Toxicological Sciences : an Official Journal of the Society of Toxicology·Leshuai W Zhang, Nancy A Monteiro-Riviere
May 28, 2009·Experimental Dermatology·Karin U SchallreuterJohn M Wood
Jun 9, 2005·Atherosclerosis·Dhananjay VaidyaPamela Ouyang

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