title: Apolipoprotein E synthesis in neurofibrosarcoma and schwannoma cell cultures from two individuals with neurofibromatosis.
abstract: Apolipoprotein E is expressed in neurofibrosarcoma and Schwannoma cell cultures derived from two patients with different types of neurofibromatosis, but not in six cell cultures derived from the benign neurofibromatosis neurofibromas. In addition, a cell culture derived from a nonneurofibromatosis human malignant astrocytoma showed apolipoprotein E expression. Although all cells in either the neurofibrosarcoma or Schwannoma cultures appeared morphologically similar (suggesting homogeneity), apolipoprotein E was immunochemically detected in the perinuclear region of only half of the cells. Thus, production of apolipoprotein E in neurofibromatosis-associated neurofibroma tumors may be a marker for a specific subclass of transformed cells. The expression of apolipoprotein E in glial cell neoplasms is possibly related to an alteration in their lipid metabolism.
mesh_terms: D000328:Adult; D001057:Apolipoproteins E / Q000096:biosynthesis*; D001254:Astrocytoma / Q000378:metabolism; D001932:Brain Neoplasms / Q000378:metabolism*; D011232:Chemical Precipitation; D002648:Child; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D005455:Fluorescent Antibody Technique; D006651:Histocytochemistry; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008858:Microscopy, Phase-Contrast; D008875:Middle Aged; D009442:Neurilemmoma / Q000378:metabolism*; D009455:Neurofibroma / Q000378:metabolism*; D009456:Neurofibromatosis 1 / Q000378:metabolism*
chemical_list: D001057:Apolipoproteins E