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  • 1
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    Paracellin-1, a renal tight junction protein required for paracellular Mg2+ resorption (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-03
    Description: Epithelia permit selective and regulated flux from apical to basolateral surfaces by transcellular passage through cells or paracellular flux between cells. Tight junctions constitute the barrier to paracellular conductance; however, little is known about the specific molecules that mediate paracellular permeabilities. Renal magnesium ion (Mg2+) resorption occurs predominantly through a paracellular conductance in the thick ascending limb of Henle (TAL). Here, positional cloning has identified a human gene, paracellin-1 (PCLN-1), mutations in which cause renal Mg2+ wasting. PCLN-1 is located in tight junctions of the TAL and is related to the claudin family of tight junction proteins. These findings provide insight into Mg2+ homeostasis, demonstrate the role of a tight junction protein in human disease, and identify an essential component of a selective paracellular conductance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simon, D B -- Lu, Y -- Choate, K A -- Velazquez, H -- Al-Sabban, E -- Praga, M -- Casari, G -- Bettinelli, A -- Colussi, G -- Rodriguez-Soriano, J -- McCredie, D -- Milford, D -- Sanjad, S -- Lifton, R P -- F.1/Telethon/Italy -- R01DK51696/DK/NIDDK NIH HHS/ -- TGM06S01/Telethon/Italy -- New York, N.Y. -- Science. 1999 Jul 2;285(5424):103-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10390358" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Calcium/urine ; Chromosomes, Human, Pair 3/genetics ; Claudins ; Cloning, Molecular ; Female ; Genes, Recessive ; Homeostasis ; Humans ; Kidney Diseases/*genetics/metabolism ; Kidney Tubules/chemistry ; Loop of Henle/chemistry/*metabolism ; Magnesium/blood/*metabolism ; Magnesium Deficiency/*genetics/metabolism ; Male ; Membrane Proteins/analysis/chemistry/genetics/*physiology ; Molecular Sequence Data ; Mutation ; Pedigree ; Physical Chromosome Mapping ; Tight Junctions/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Mitotic recombination in patients with ichthyosis causes reversion of dominant mutations in KRT10 (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-08-28
    Description: Somatic loss of wild-type alleles can produce disease traits such as neoplasia. Conversely, somatic loss of disease-causing mutations can revert phenotypes; however, these events are infrequently observed. Here we show that ichthyosis with confetti, a severe, sporadic skin disease in humans, is associated with thousands of revertant clones of normal skin that arise from loss of heterozygosity on chromosome 17q via mitotic recombination. This allowed us to map and identify disease-causing mutations in the gene encoding keratin 10 (KRT10); all result in frameshifts into the same alternative reading frame, producing an arginine-rich C-terminal peptide that redirects keratin 10 from the cytokeratin filament network to the nucleolus. The high frequency of somatic reversion in ichthyosis with confetti suggests that revertant stem cell clones are under strong positive selection and/or that the rate of mitotic recombination is elevated in individuals with this disorder.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3085938/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3085938/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Choate, Keith A -- Lu, Yin -- Zhou, Jing -- Choi, Murim -- Elias, Peter M -- Farhi, Anita -- Nelson-Williams, Carol -- Crumrine, Debra -- Williams, Mary L -- Nopper, Amy J -- Bree, Alanna -- Milstone, Leonard M -- Lifton, Richard P -- K08 AR056305/AR/NIAMS NIH HHS/ -- K08 AR056305-01/AR/NIAMS NIH HHS/ -- K08 AR056305-02/AR/NIAMS NIH HHS/ -- K08 AR056305-03/AR/NIAMS NIH HHS/ -- K08 AR056305-04/AR/NIAMS NIH HHS/ -- T32 AR007016/AR/NIAMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Oct 1;330(6000):94-7. doi: 10.1126/science.1192280. Epub 2010 Aug 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Dermatology, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20798280" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Nucleolus/metabolism ; Chromosome Mapping ; Chromosomes, Human, Pair 17/*genetics ; Female ; *Frameshift Mutation ; Humans ; Ichthyosiform Erythroderma, Congenital/*genetics/pathology ; Intermediate Filaments/metabolism/ultrastructure ; Keratin-10/chemistry/*genetics/metabolism ; Keratins/metabolism ; Loss of Heterozygosity ; Male ; *Mitosis ; Molecular Sequence Data ; Mosaicism ; Mutant Proteins/chemistry/genetics/metabolism ; *Recombination, Genetic ; Selection, Genetic ; Skin/pathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Spongiform degeneration in mahoganoid mutant mice (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-02-01
    Description: mahoganoid is a mouse coat-color mutation whose pigmentary phenotype and genetic interactions resemble those of Attractin (Atrn). Atrn mutations also cause spongiform neurodegeneration. Here, we show that a null mutation for mahoganoid causes a similar age-dependent neuropathology that includes many features of prion diseases but without accumulation of protease-resistant prion protein. The gene mutated in mahoganoid encodes a RING-containing protein with E3 ubiquitin ligase activity in vitro. Similarities in phenotype, expression, and genetic interactions suggest that mahoganoid and Atrn genes are part of a conserved pathway for regulated protein turnover whose function is essential for neuronal viability.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉He, Lin -- Lu, Xin-Yun -- Jolly, Aaron F -- Eldridge, Adam G -- Watson, Stanley J -- Jackson, Peter K -- Barsh, Gregory S -- Gunn, Teresa M -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):710-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Department of Genetics, Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12560552" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Animals ; Blotting, Northern ; Brain/metabolism/*pathology ; Carrier Proteins/chemistry/*genetics/*metabolism ; Crosses, Genetic ; Female ; Gene Expression ; Ligases/metabolism ; Male ; Membrane Proteins/genetics ; Mice ; Mice, Inbred C3H ; Mice, Mutant Strains ; Mice, Transgenic ; Models, Biological ; Molecular Sequence Data ; *Mutation ; Neurodegenerative Diseases/*genetics/metabolism/*pathology ; Neurons/metabolism/pathology ; Pigmentation ; Prions/metabolism ; RNA, Messenger/genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Transgenes ; Ubiquitin/metabolism ; Ubiquitin-Protein Ligases ; Vacuoles/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Control of nonapoptotic developmental cell death in Caenorhabditis elegans by a polyglutamine-repeat protein (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-03-01
    Description: Death is a vital developmental cell fate. In Caenorhabditis elegans, programmed death of the linker cell, which leads gonadal elongation, proceeds independently of caspases and apoptotic effectors. To identify genes promoting linker-cell death, we performed a genome-wide RNA interference screen. We show that linker-cell death requires the gene pqn-41, encoding an endogenous polyglutamine-repeat protein. pqn-41 functions cell-autonomously and is expressed at the onset of linker-cell death. pqn-41 expression is controlled by the mitogen-activated protein kinase kinase SEK-1, which functions in parallel to the zinc-finger protein LIN-29 to promote cellular demise. Linker-cell death is morphologically similar to cell death associated with normal vertebrate development and polyglutamine-induced neurodegeneration. Our results may therefore provide molecular inroads to understanding nonapoptotic cell death in metazoan development and disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3858082/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3858082/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blum, Elyse S -- Abraham, Mary C -- Yoshimura, Satoshi -- Lu, Yun -- Shaham, Shai -- CA09673/CA/NCI NIH HHS/ -- R01 HD042680/HD/NICHD NIH HHS/ -- R01HD042680/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2012 Feb 24;335(6071):970-3. doi: 10.1126/science.1215156.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Developmental Genetics, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22363008" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Caenorhabditis elegans/*cytology/genetics/growth & development/*metabolism ; Caenorhabditis elegans Proteins/chemistry/*genetics/*metabolism ; *Cell Death ; Cell Nucleus/ultrastructure ; Cell Survival ; DNA-Binding Proteins/genetics/metabolism ; Gene Expression Regulation ; Genes, Helminth ; Genome, Helminth ; MAP Kinase Kinase 4/genetics/metabolism ; Male ; Molecular Sequence Data ; Mutant Proteins/chemistry/metabolism ; Peptides/chemistry ; Protein Structure, Tertiary ; RNA Interference ; Sequence Deletion ; Transcription Factors/genetics/metabolism ; Transgenes
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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