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Expression of LIM protein genes Lmo1, Lmo2, and Lmo3 in adult mouse hippocampus and other forebrain regions: differential regulation by seizure activity.
J Neurosci 1997; 17(14):5549-59JN

Abstract

The LIM domain is a zinc-binding amino acid motif that characterizes various proteins which function in protein-protein interactions and transcriptional regulation. Expression patterns of several LIM protein genes are compatible with roles in vertebrate CNS development, but little is known about the expression, regulation, or function of LIM proteins in the mature CNS. Lmo1, Lmo2, and Lmo3 are LIM-only genes originally identified as putative oncogenes that have been implicated in the control of cell differentiation and are active during CNS development. Using in situ hybridization for mRNA and immunohistochemical detection of reporter protein expression in transgenic mice, we found that Lmo1, Lmo2, and Lmo3 show individually unique but partially overlapping patterns of expression in several regions of the adult mouse forebrain, including hippocampus, caudate putamen, medial habenula, thalamus, amygdala, olfactory bulb, hypothalamus, and cerebral cortex. In the hippocampal formation, Lmo1, Lmo2, and Lmo3 show different combinatorial patterns of expression levels in CA pyramidal and dentate granule neurons, and Lmo1 is present in topographically restricted subpopulations of astrocytes. Kainic acid-induced limbic seizures differentially regulated Lmo1, Lmo2, and Lmo3 mRNA levels in hippocampal pyramidal and granule neurons, such that Lmo1 mRNA increased, whereas Lmo2 and Lmo3 mRNAs decreased significantly, with maximal changes at 6 hr after seizure onset and return to baseline by 24 hr. These findings show that Lmo1, Lmo2, and Lmo3 continue to be expressed in the adult mammalian CNS in a cell type-specific manner, are differentially regulated by neuronal activity, and may thus be involved in cell phenotype-specific regulatory functions.

Authors+Show Affiliations

Medical Research Council Cambridge Centre for Brain Repair, Forvie Site, Cambridge CB2 2PY, United Kingdom.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9204936

Citation

Hinks, G L., et al. "Expression of LIM Protein Genes Lmo1, Lmo2, and Lmo3 in Adult Mouse Hippocampus and Other Forebrain Regions: Differential Regulation By Seizure Activity." The Journal of Neuroscience : the Official Journal of the Society for Neuroscience, vol. 17, no. 14, 1997, pp. 5549-59.
Hinks GL, Shah B, French SJ, et al. Expression of LIM protein genes Lmo1, Lmo2, and Lmo3 in adult mouse hippocampus and other forebrain regions: differential regulation by seizure activity. J Neurosci. 1997;17(14):5549-59.
Hinks, G. L., Shah, B., French, S. J., Campos, L. S., Staley, K., Hughes, J., & Sofroniew, M. V. (1997). Expression of LIM protein genes Lmo1, Lmo2, and Lmo3 in adult mouse hippocampus and other forebrain regions: differential regulation by seizure activity. The Journal of Neuroscience : the Official Journal of the Society for Neuroscience, 17(14), pp. 5549-59.
Hinks GL, et al. Expression of LIM Protein Genes Lmo1, Lmo2, and Lmo3 in Adult Mouse Hippocampus and Other Forebrain Regions: Differential Regulation By Seizure Activity. J Neurosci. 1997 Jul 15;17(14):5549-59. PubMed PMID: 9204936.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Expression of LIM protein genes Lmo1, Lmo2, and Lmo3 in adult mouse hippocampus and other forebrain regions: differential regulation by seizure activity. AU - Hinks,G L, AU - Shah,B, AU - French,S J, AU - Campos,L S, AU - Staley,K, AU - Hughes,J, AU - Sofroniew,M V, PY - 1997/7/15/pubmed PY - 1997/7/15/medline PY - 1997/7/15/entrez SP - 5549 EP - 59 JF - The Journal of neuroscience : the official journal of the Society for Neuroscience JO - J. Neurosci. VL - 17 IS - 14 N2 - The LIM domain is a zinc-binding amino acid motif that characterizes various proteins which function in protein-protein interactions and transcriptional regulation. Expression patterns of several LIM protein genes are compatible with roles in vertebrate CNS development, but little is known about the expression, regulation, or function of LIM proteins in the mature CNS. Lmo1, Lmo2, and Lmo3 are LIM-only genes originally identified as putative oncogenes that have been implicated in the control of cell differentiation and are active during CNS development. Using in situ hybridization for mRNA and immunohistochemical detection of reporter protein expression in transgenic mice, we found that Lmo1, Lmo2, and Lmo3 show individually unique but partially overlapping patterns of expression in several regions of the adult mouse forebrain, including hippocampus, caudate putamen, medial habenula, thalamus, amygdala, olfactory bulb, hypothalamus, and cerebral cortex. In the hippocampal formation, Lmo1, Lmo2, and Lmo3 show different combinatorial patterns of expression levels in CA pyramidal and dentate granule neurons, and Lmo1 is present in topographically restricted subpopulations of astrocytes. Kainic acid-induced limbic seizures differentially regulated Lmo1, Lmo2, and Lmo3 mRNA levels in hippocampal pyramidal and granule neurons, such that Lmo1 mRNA increased, whereas Lmo2 and Lmo3 mRNAs decreased significantly, with maximal changes at 6 hr after seizure onset and return to baseline by 24 hr. These findings show that Lmo1, Lmo2, and Lmo3 continue to be expressed in the adult mammalian CNS in a cell type-specific manner, are differentially regulated by neuronal activity, and may thus be involved in cell phenotype-specific regulatory functions. SN - 0270-6474 UR - https://www.unboundmedicine.com/medline/citation/9204936/Expression_of_LIM_protein_genes_Lmo1_Lmo2_and_Lmo3_in_adult_mouse_hippocampus_and_other_forebrain_regions:_differential_regulation_by_seizure_activity_ L2 - http://www.jneurosci.org/cgi/pmidlookup?view=long&pmid=9204936 DB - PRIME DP - Unbound Medicine ER -