Coexpression of thyroid hormone receptor isoforms in mouse oligodendrocytes

• Published in: Journal of neuroscience research Vol. 67; no. 1; pp. 106 - 113
• Main Authors: Bury, Fabienne, Carré, Jean-Luc, Vega, Sonia, Ghandour, M. Said, Rodriguez-Peña, Angeles, Langley, Keith, Sarliève, Louis L.
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 01.01.2002
• Subjects: Aging - physiology; Animals; Antibody Specificity; Basic Helix-Loop-Helix Transcription Factors; Cell Differentiation - physiology; Cells, Cultured; Central Nervous System - cytology; Central Nervous System - embryology; Central Nervous System - growth & development; Coculture Techniques; DNA-Binding Proteins; Gene Expression Regulation - physiology; Immunohistochemistry; Mice; Myelin Proteins; Myelin-Associated Glycoprotein - metabolism; Myelin-Oligodendrocyte Glycoprotein; Nerve Tissue Proteins - metabolism; nuclear triiodothyronine receptors; oligodendrocytes; Oligodendroglia - cytology; Oligodendroglia - metabolism; Protein Isoforms - metabolism; Rats; Receptors, Thyroid Hormone - metabolism; secondary cultures; Stem Cells - cytology; Stem Cells - metabolism; thyroid hormones; Thyroid Hormones - metabolism; triple immunocytochemistry
• ISSN: 0360-4012; 1097-4547
• DOI: 10.1002/jnr.10111

Double and triple immunocytochemistry with stage‐specific markers and specific antireceptor antibodies was used to study expression of nuclear thyroid hormone receptor (TR) isoforms in cultured mouse oligodendrocytes. To evaluate the coexpression of each TR isoform, antibodies were raised in rabbits and mice against specific regions of α1‐TR and α2‐TR common to both α isoforms and β1‐TR. Their specificities were assessed by Western blotting and by immunocytochemistry on rat hepatocytes. Oligodendrocyte subpopulations were found to coexpress the α‐ and β1‐TR epitopes at defined developmental stages. Both α‐ and β1‐TR isoforms are colocalized in oligodendrocytes during an early stage identified by the marker OL‐1, before 2′,3′‐cyclic nucleotide 3′‐phosphohydrolase is expressed. Expression of β1‐TR varies during maturation, and that of α‐TR decreases during terminal maturation. © 2002 Wiley‐Liss, Inc.