Cloning and analysis of axolotl ISL2 and LHX2 LIM-homeodomain transcription factors
We cloned and characterized the ISL2 and LHX2 LIM‐homeodomain transcription factors of the Mexican salamander, or axolotl, Ambystoma mexicanum. Using a degenerate PCR approach, partial cDNAs representing five LIM‐homeodomain genes were cloned, indicating conservation of this class of transcription f...
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| Veröffentlicht in: | Genesis (New York, N.Y. : 2000) N.Y. : 2000), 2004-03, Vol.38 (3), p.110-121 |
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| container_title | Genesis (New York, N.Y. : 2000) |
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| creator | Showalter, Aaron D. Yaden, Benjamin C. Chernoff, Ellen A.G. Rhodes, Simon J. |
| description | We cloned and characterized the ISL2 and LHX2 LIM‐homeodomain transcription factors of the Mexican salamander, or axolotl, Ambystoma mexicanum. Using a degenerate PCR approach, partial cDNAs representing five LIM‐homeodomain genes were cloned, indicating conservation of this class of transcription factors in urodeles. Full‐length cDNAs for Isl2 and Lhx2 were identified and sequenced. The predicted ISL2 and LHX2 proteins are well conserved, especially in the LIM and DNA‐binding domains. The Isl2 and Lhx2 genes are expressed at all examined stages of embryogenesis and display tissue‐restricted expression patterns in adults. In functional tests, axolotl LHX2 was inactive compared to homologous mammalian factors and adopted unusual DNA/protein complexes. However, axolotl ISL2 bound and induced transcription from the rat insulin gene. These experiments demonstrate conservation of key developmental regulatory proteins in salamanders and will allow future studies of their potential roles in the molecular regulation of tissue regeneration in such species. genesis 38:110–121, 2004. © 2004 Wiley‐Liss, Inc. |
| doi_str_mv | 10.1002/gene.20007 |
| format | Article |
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Using a degenerate PCR approach, partial cDNAs representing five LIM‐homeodomain genes were cloned, indicating conservation of this class of transcription factors in urodeles. Full‐length cDNAs for Isl2 and Lhx2 were identified and sequenced. The predicted ISL2 and LHX2 proteins are well conserved, especially in the LIM and DNA‐binding domains. The Isl2 and Lhx2 genes are expressed at all examined stages of embryogenesis and display tissue‐restricted expression patterns in adults. In functional tests, axolotl LHX2 was inactive compared to homologous mammalian factors and adopted unusual DNA/protein complexes. However, axolotl ISL2 bound and induced transcription from the rat insulin gene. 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Using a degenerate PCR approach, partial cDNAs representing five LIM‐homeodomain genes were cloned, indicating conservation of this class of transcription factors in urodeles. Full‐length cDNAs for Isl2 and Lhx2 were identified and sequenced. The predicted ISL2 and LHX2 proteins are well conserved, especially in the LIM and DNA‐binding domains. The Isl2 and Lhx2 genes are expressed at all examined stages of embryogenesis and display tissue‐restricted expression patterns in adults. In functional tests, axolotl LHX2 was inactive compared to homologous mammalian factors and adopted unusual DNA/protein complexes. However, axolotl ISL2 bound and induced transcription from the rat insulin gene. 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Yaden, Benjamin C. ; Chernoff, Ellen A.G. ; Rhodes, Simon J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3947-16b8709fc9a57c0a2e7667fe498057aa65d77a2b5cd348b3443637cb1deb99893</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Ambystoma mexicanum</topic><topic>Animals</topic><topic>Cells, Cultured</topic><topic>Cloning, Molecular</topic><topic>DNA, Complementary - genetics</topic><topic>Electrophoretic Mobility Shift Assay</topic><topic>Embryonic and Fetal Development - physiology</topic><topic>Gene Expression Regulation, Developmental</topic><topic>Homeodomain Proteins - physiology</topic><topic>Humans</topic><topic>insulin</topic><topic>LIM-Homeodomain Proteins</topic><topic>Luciferases - metabolism</topic><topic>Mice</topic><topic>Nerve Tissue Proteins - physiology</topic><topic>nervous system</topic><topic>pancreas</topic><topic>pituitary</topic><topic>Polymerase Chain Reaction</topic><topic>Protein Biosynthesis</topic><topic>salamander</topic><topic>Transcription Factors - physiology</topic><topic>Transcription, Genetic</topic><topic>urodele</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Showalter, Aaron D.</creatorcontrib><creatorcontrib>Yaden, Benjamin C.</creatorcontrib><creatorcontrib>Chernoff, Ellen A.G.</creatorcontrib><creatorcontrib>Rhodes, Simon J.</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Nucleic Acids Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Genesis (New York, N.Y. : 2000)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Showalter, Aaron D.</au><au>Yaden, Benjamin C.</au><au>Chernoff, Ellen A.G.</au><au>Rhodes, Simon J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cloning and analysis of axolotl ISL2 and LHX2 LIM-homeodomain transcription factors</atitle><jtitle>Genesis (New York, N.Y. : 2000)</jtitle><addtitle>Genesis</addtitle><date>2004-03</date><risdate>2004</risdate><volume>38</volume><issue>3</issue><spage>110</spage><epage>121</epage><pages>110-121</pages><issn>1526-954X</issn><eissn>1526-968X</eissn><abstract>We cloned and characterized the ISL2 and LHX2 LIM‐homeodomain transcription factors of the Mexican salamander, or axolotl, Ambystoma mexicanum. Using a degenerate PCR approach, partial cDNAs representing five LIM‐homeodomain genes were cloned, indicating conservation of this class of transcription factors in urodeles. Full‐length cDNAs for Isl2 and Lhx2 were identified and sequenced. The predicted ISL2 and LHX2 proteins are well conserved, especially in the LIM and DNA‐binding domains. The Isl2 and Lhx2 genes are expressed at all examined stages of embryogenesis and display tissue‐restricted expression patterns in adults. In functional tests, axolotl LHX2 was inactive compared to homologous mammalian factors and adopted unusual DNA/protein complexes. However, axolotl ISL2 bound and induced transcription from the rat insulin gene. These experiments demonstrate conservation of key developmental regulatory proteins in salamanders and will allow future studies of their potential roles in the molecular regulation of tissue regeneration in such species. genesis 38:110–121, 2004. © 2004 Wiley‐Liss, Inc.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>15048808</pmid><doi>10.1002/gene.20007</doi><tpages>12</tpages></addata></record> |
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| subjects | Ambystoma mexicanum Animals Cells, Cultured Cloning, Molecular DNA, Complementary - genetics Electrophoretic Mobility Shift Assay Embryonic and Fetal Development - physiology Gene Expression Regulation, Developmental Homeodomain Proteins - physiology Humans insulin LIM-Homeodomain Proteins Luciferases - metabolism Mice Nerve Tissue Proteins - physiology nervous system pancreas pituitary Polymerase Chain Reaction Protein Biosynthesis salamander Transcription Factors - physiology Transcription, Genetic urodele |
| title | Cloning and analysis of axolotl ISL2 and LHX2 LIM-homeodomain transcription factors |
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