Establishment of a cell line from lepidopteran wing imaginal discs: Induction of newly synthesized proteins by 20-hydroxyecdysone

摘要

A cell line has been developed from the imaginal wing discs of the lepidopteran insect Trichoplusia ni (Hübner). The cells grow in suspension as fluid-filled, multicellular vesicles. The cell line has been designated IAL-TND1. Two-dimensional electrophoresis (isoelectric focusing and sodium dodecyl sulfate/polyacrylamide gels) of [35S]methionine-labeled proteins revealed similar patterns for IAL-TND1 cells and whole T. ni wing imaginal discs. Additionally, exposure to the insect steroid hormone 20-hydroxyecdysone stimulated the synthesis of the same new proteins in both whole wing discs and IAL-TND1 cell vesicles.