title: Expression of Isl1 during mouse development.
abstract: The LIM-homeodomain transcription factor Isl1 plays essential roles in cell proliferation, differentiation and survival during embryogenesis. To better visualize Isl1 expression and provide insight into the role of Isl1 during development, we generated an Isl1 nuclear LacZ (nLacZ) knockin mouse line. We have analyzed Isl1nlacZ expression during development by Xgal staining, and compared expression of Isl1nlacZ with endogenous Isl1 by coimmunostaining with antibodies to Isl1 and β-galactosidase. Results demonstrated that during development, Isl1 nLacZ is expressed in a pattern that recapitulates endogenous Isl1 protein expression. Consistent with previous in situ and immunohistochemistry data, we observed Isl1nlacZ expression in multiple tissues and cell types, including the central and peripheral nervous system, neural retina, inner ear, pharyngeal mesoderm and endoderm and their derivatives (craniofacial structures, thymus, thyroid gland and trachea), cardiovascular system (cardiac outflow tract, carotid arteries, umbilical vessels, sinoatrial node and atrial septum), gastrointestinal system (oral epithelium, stomach, pancreas, mesentery) and hindlimb.
authors.affiliation: Key Laboratory of Arrhythmia, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai 200120, China.
authors.forename: Shaowei
authors.initials: S
authors.lastname: Zhuang
authors.forename: Qingquan
authors.initials: Q
authors.lastname: Zhang
authors.forename: Tao
authors.initials: T
authors.lastname: Zhuang
authors.forename: Sylvia M
authors.initials: SM
authors.lastname: Evans
authors.forename: Xingqun
authors.initials: X
authors.lastname: Liang
authors.forename: Yunfu
authors.initials: Y
authors.lastname: Sun
mesh_terms: D000818:Animals; D001921:Brain / Q000166:cytology / Q000196:embryology / Q000378:metabolism; D004622:Embryo, Mammalian / Q000166:cytology / Q000378:metabolism; D047108:Embryonic Development; D005260:Female; D015870:Gene Expression; D018507:Gene Expression Regulation, Developmental; D055879:Gene Knock-In Techniques; D060850:LIM-Homeodomain Proteins / Q000235:genetics / Q000378:metabolism*; D051379:Mice; D008822:Mice, Transgenic; D009046:Motor Neurons / Q000378:metabolism; D009928:Organ Specificity; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*
chemical_list: D060850:LIM-Homeodomain Proteins; D014157:Transcription Factors; C063843:insulin gene enhancer binding protein Isl-1
keywords: Development; Gene expression; Isl1; LIM-homeodomain; Transgenic
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