Primary Cultures of Embryonic Chick Lens Cells as a Model System to Study Lens Gap Junctions and Fiber Cell Differentiation

Primary Cultures of Embryonic Chick Lens Cells as a Model System to Study Lens Gap Junctions and... A major limitation in lens gap junction research has been the lack of experimentally tractable ex vivo systems to study the formation and regulation of fiber-type gap junctions. Although immortalized lens-derived cell lines are amenable to both gene transfection and siRNA-mediated knockdown, to our knowledge none are capable of undergoing appreciable epithelial-to-fiber differentiation. Lens central epithelial explants have the converse limitation. A key advance in the field was the development of a primary embryonic chick lens cell culture system by Drs. Sue Menko and Ross Johnson. Unlike central epithelial explants, these cultures also include cells from the peripheral (preequatorial and equatorial) epithelium, which is the most physiologically relevant population for the study of fiber-type gap junction formation. We have modified the Menko/Johnson system and refer to our cultures as dissociated cell-derived monolayer cultures (DCDMLs). We culture DCDMLs without serum to mimic the avascular lens environment and on laminin, the major matrix component of the lens capsule. Here, I review the features of the DCDML system and how we have used it to study lens gap junctions and fiber cell differentiation. Our results demonstrate the power of DCDMLs to generate new findings germane to the mammalian lens and how these cultures can be exploited to conduct experiments that would be impossible, prohibitively expensive and/or difficult to interpret using transgenic animals in vivo. The Journal of Membrane Biology Springer Journals

Primary Cultures of Embryonic Chick Lens Cells as a Model System to Study Lens Gap Junctions and Fiber Cell Differentiation

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Copyright © 2012 by Springer Science+Business Media, LLC
Life Sciences; Biochemistry, general; Human Physiology
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