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Coffin lowry syndrome

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https://www.readbyqxmd.com/read/27732676/bacterial-expression-purification-and-in-vitro-phosphorylation-of-full-length-ribosomal-s6-kinase-2-rsk2
#1
Darkhan Utepbergenov, Paulina M Hennig, Urszula Derewenda, Mykhaylo V Artamonov, Avril V Somlyo, Zygmunt S Derewenda
Ribosomal S6 kinases (RSK) play important roles in cell signaling through the mitogen-activated protein kinase (MAPK) pathway. Each of the four RSK isoforms (RSK1-4) is a single polypeptide chain containing two kinase domains connected by a linker sequence with regulatory phosphorylation sites. Here, we demonstrate that full-length RSK2-which is implicated in several types of cancer, and which is linked to the genetic Coffin-Lowry syndrome-can be overexpressed with high yields in Escherichia coli as a fusion with maltose binding protein (MBP), and can be purified to homogeneity after proteolytic removal of MBP by affinity and size-exclusion chromatography...
2016: PloS One
https://www.readbyqxmd.com/read/27495083/eight-years-of-follow-up-after-laminectomy-of-calcium-pyrophosphate-crystal-deposition-in-the-cervical-yellow-ligament-of-patient-with-coffin-lowry-syndrome-a-case-report
#2
Tadao Morino, Tadanori Ogata, Hideki Horiuchi, Shintaro Yamaoka, Mitsumasa Fukuda, Hiromasa Miura
BACKGROUND: We report 8 years of follow-up after decompression to treat cervical myelopathy in a patient with Coffin-Lowry syndrome (CLS). CLS is a rare X-linked semidominant syndrome associated with growth and psychomotor retardation, general hypotonia, and skeletal abnormalities. In this patient, the spinal cord was compressed by calcium pyrophosphate crystal deposition in the cervical yellow ligament (YL). To date, only 1 report has described clinical features after surgery for calcified cervical YL in CLS...
August 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/26927527/rsk2-the-kinase-mutated-in-coffin-lowry-syndrome-controls-cementum-formation
#3
T Koehne, A Jeschke, F Petermann, S Seitz, M Neven, S Peters, J Luther, M Schweizer, T Schinke, B Kahl-Nieke, M Amling, J-P David
The ribosomal S6 kinase RSK2 is essential for osteoblast function, and inactivating mutations of RSK2 cause osteopenia in humans with Coffin-Lowry syndrome (CLS). Alveolar bone loss and premature tooth exfoliation are also consistently reported symptoms in CLS patients; however, the pathophysiologic mechanisms are unclear. Therefore, aiming to identify the functional relevance of Rsk2 for tooth development, we analyzed Rsk2-deficient mice. Here, we show that Rsk2 is a critical regulator of cementoblast function...
July 2016: Journal of Dental Research
https://www.readbyqxmd.com/read/26914125/drop-episodes-improved-after-tracheotomy-a-case-of-coffin-lowry-syndrome-associated-with-obstructive-sleep-apnea-syndrome
#4
G Imataka, I Nakajima, K Goto, W Konno, H Hirabayashi, O Arisaka
Some cases of Coffin-Lowry syndrome recognized episodic drops and it tended to be intractable for medical treatment. We reported here a patient with the Coffin-Lowry syndrome associated with obstructive sleep apnea syndrome (OSAS). The patient had epileptic seizures and drop attacks only during night-time and it was not recognized during the daytime. His sleep-induced electroencephalogram was normal. At 12-years old of his age, his OSAS was worse, so we performed a tracheotomy. Notably after the operation, his epileptic episodes were disappeared...
2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/26354035/625-kb-microduplication-at-xp22-12-including-rps6ka3-in-a-child-with-mild-intellectual-disability
#5
Veronica Bertini, Francesca Cambi, Rossella Bruno, Benedetta Toschi, Francesca Forli, Stefano Berrettini, Paolo Simi, Angelo Valetto
Here, we report on a patient with a 625 kb duplication in Xp22.12, detected by array comparative genomic hybridization (CGH). The duplicated region contains only one gene, RPS6KA3, that results in partial duplication. The same duplication was present in his mother and his maternal uncle. This partial duplication inhibits the RPS6KA3 expression, mimicking the effect of loss-of-function mutations associated with Coffin-Lowry syndrome (CLS). The phenotype of the patient here presented is not fully evocative of this syndrome because he does not present some of the facial, digital and skeletal abnormalities that are considered the main diagnostic features of CLS...
December 2015: Journal of Human Genetics
https://www.readbyqxmd.com/read/26297997/concomitant-partial-exon-skipping-by-a-unique-missense-mutation-of-rps6ka3-causes-coffin-lowry-syndrome
#6
Jonathan D J Labonne, Min Ji Chung, Julie R Jones, Priya Anand, Wolfgang Wenzel, Daniela Iacoboni, Lawrence C Layman, Hyung-Goo Kim
Coffin-Lowry syndrome (CLS) is an X-linked semi-dominant disorder characterized by diverse phenotypes including intellectual disability, facial and digital anomalies. Loss-of-function mutations in the Ribosomal Protein S6 Kinase Polypeptide 3 (RPS6KA3) gene have been shown to be responsible for CLS. Among the large number of mutations, however, no exonic mutation causing exon skipping has been described. Here, we report a male patient with CLS having a novel mutation at the 3' end of an exon at a splice donor junction...
January 1, 2016: Gene
https://www.readbyqxmd.com/read/26279655/recurrent-nonconvulsive-status-epilepticus-in-a-patient-with-coffin-lowry-syndrome
#7
Markus Gschwind, Giovanni Foletti, Alessandra Baumer, Armand Bottani, Jan Novy
Coffin-Lowry syndrome (CLS) is a rare neurodevelopmental condition caused by heterogeneous mutations in the RPS6KA3 gene on the X chromosome, leading to severe intellectual disability and dysmorphism in men, while women are carriers and only weakly affected. CLS is well known for stimulus-induced drop episodes; however, epilepsy is not commonly reported in this condition. We report on a CLS patient presenting with recurrent episodes of nonconvulsive status epilepticus (NCSE) with generalized epileptic activity, for which investigations did not find any other cause than the patient's genetic condition...
July 2015: Molecular Syndromology
https://www.readbyqxmd.com/read/26232052/myoclonus-in-childhood-onset-neurogenetic-disorders-the-importance-of-early-identification-and-treatment
#8
Martje E van Egmond, Jan Willem J Elting, Anouk Kuiper, Rodi Zutt, Kirsten R Heineman, Oebele F Brouwer, Deborah A Sival, Michel A Willemsen, Marina A J Tijssen, Tom J de Koning
BACKGROUND: In clinical practice, myoclonus in childhood-onset neurogenetic disorders frequently remains unrecognized, because it is often overshadowed by other neurological features. Since treatment can lead to significant functional improvement, accurate phenotyping is essential. To demonstrate the importance of early identification and treatment, we report on four patients with various childhood-onset neurogenetic disorders suffering from myoclonus. METHODS: We evaluated four patients with established childhood-onset neurogenetic disorders and involuntary jerky movements, who visited our young-onset movement disorder outpatient clinic...
November 2015: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/26156445/-deletion-of-the-rps6ka3-gene-in-a-female-with-a-classical-phenotype-of-coffin-lowry-syndrome-including-stimulus-induced-drop-attacks
#9
LETTER
Inés Quintela, Francisco Barros-Angueira, Laura Pérez-Gay, Manuel Castro-Gago, Ángel Carracedo, Jesús Eirís-Puñal
No abstract text is available yet for this article.
July 16, 2015: Revista de Neurologia
https://www.readbyqxmd.com/read/26043507/a-familial-case-of-coffin-lowry-syndrome-caused-by-rps6ka3-c-898c-t-mutation-associated-with-multiple-abnormal-brain-imaging-findings
#10
T Tos, M Y Alp, A Aksoy, S Ceylaner, A Hanauer
Coffin-Lowry syndrome (CLS) is a rare X linked mental retardation syndrome characterised by severe psychomotor and growth retardation, distinct facial phenotype, and progressive skeletal malformations. It is caused by mutations in the RPS6KA3 gene located at Xp22.2. In this report we describe a family with CLS consists of three affected males, and two affected females, arising from c.898C>T mutation in RPS6KA3 gene. A 6 year-old, and a 3 year-old boy both had distinct clinical features of Coffin-Lowry syndrome; severe mental and motor retardation, microcephaly, prominent forehead, hypertelorism, large mouth, large ears, large soft hands, puffy tapered fingers, and pectus carinatum...
2015: Genetic Counseling
https://www.readbyqxmd.com/read/25118007/familial-co-segregation-of-coffin-lowry-syndrome-inherited-from-the-mother-and-autosomal-dominant-waardenburg-type-iv-syndrome-due-to-deletion-of-ednrb-inherited-from-the-father
#11
Jacob Loupe, Srirangan Sampath, Yves Lacassie
We report an African-American family that was identified after the proposita was referred for diagnostic evaluation at 4½ months with a history of Hirschsprung and dysmorphic features typical of Waardenburg syndrome (WS). Family evaluation revealed that the father had heterochromidia irides and hypertelorism supporting the clinical diagnosis of WS; however, examination of the mother revealed characteristic facial and digital features of Coffin-Lowry syndrome (CLS). Molecular testing of the mother identified a novel 2 bp deletion (c...
October 2014: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/25049390/next-generation-sequencing-identifies-rare-variants-associated-with-noonan-syndrome
#12
Peng-Chieh Chen, Jiani Yin, Hui-Wen Yu, Tao Yuan, Minerva Fernandez, Christina K Yung, Quang M Trinh, Vanya D Peltekova, Jeffrey G Reid, Erica Tworog-Dube, Margaret B Morgan, Donna M Muzny, Lincoln Stein, John D McPherson, Amy E Roberts, Richard A Gibbs, Benjamin G Neel, Raju Kucherlapati
Noonan syndrome (NS) is a relatively common genetic disorder, characterized by typical facies, short stature, developmental delay, and cardiac abnormalities. Known causative genes account for 70-80% of clinically diagnosed NS patients, but the genetic basis for the remaining 20-30% of cases is unknown. We performed next-generation sequencing on germ-line DNA from 27 NS patients lacking a mutation in the known NS genes. We identified gain-of-function alleles in Ras-like without CAAX 1 (RIT1) and mitogen-activated protein kinase kinase 1 (MAP2K1) and previously unseen loss-of-function variants in RAS p21 protein activator 2 (RASA2) that are likely to cause NS in these patients...
August 5, 2014: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/25044551/the-historical-coffin-lowry-syndrome-family-revisited-identification-of-two-novel-mutations-of-rps6ka3-in-three-male-patients
#13
Hiromi Koso Nishimoto, Kyungsoo Ha, Julie R Jones, Alka Dwivedi, Hyun-Min Cho, Lawrence C Layman, Hyung-Goo Kim
Coffin-Lowry syndrome (CLS) is a rare X-linked dominant disorder characterized by intellectual disability, craniofacial abnormalities, short stature, tapering fingers, hypotonia, and skeletal malformations. CLS is caused by mutations in the Ribosomal Protein S6 Kinase, 90 kDa, Polypeptide 3 (RPS6KA3) gene located at Xp22.12, which encodes Ribosomal S6 Kinase 2 (RSK2). Here we analyzed RPS6KA3 in three unrelated CLS patients including one from the historical Coffin-Lowry syndrome family and found two novel mutations...
September 2014: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/24601120/-boy-with-coffin-lowry-syndrome-associated-with-spinal-cord-injuries
#14
Yuki Kawana, Kenta Okamura, Kiyoyasu Kurahashi
A 12-year-old male patient with Coffin-Lowry syndrome was scheduled for posterior cervical decompression and fusion for cervical spinal injuries. The patient had features of Coffin-Lowry syndrome including mental retardation, prominent forehead, a short nose with a wide tip, a wide mouth with full lips, short stature, microcephaly, and kyphoscoliosis. We anticipated major troubles related to anesthesia such as difficult ventilation and intubation, communication difficulty during induction and extubation, and difficulty in using a naso-pharyngeal airway...
February 2014: Masui. the Japanese Journal of Anesthesiology
https://www.readbyqxmd.com/read/24416220/rsk2-is-a-modulator-of-craniofacial-development
#15
Virginie Laugel-Haushalter, Marie Paschaki, Pauline Marangoni, Coralie Pilgram, Arnaud Langer, Thibaut Kuntz, Julie Demassue, Supawich Morkmued, Philippe Choquet, André Constantinesco, Fabien Bornert, Matthieu Schmittbuhl, Solange Pannetier, Laurent Viriot, André Hanauer, Pascal Dollé, Agnès Bloch-Zupan
BACKGROUND: The RSK2 gene is responsible for Coffin-Lowry syndrome, an X-linked dominant genetic disorder causing mental retardation, skeletal growth delays, with craniofacial and digital abnormalities typically associated with this syndrome. Craniofacial and dental anomalies encountered in this rare disease have been poorly characterized. METHODOLOGY/PRINCIPAL FINDINGS: We examined, using X-Ray microtomographic analysis, the variable craniofacial dysmorphism and dental anomalies present in Rsk2 knockout mice, a model of Coffin-Lowry syndrome, as well as in triple Rsk1,2,3 knockout mutants...
2014: PloS One
https://www.readbyqxmd.com/read/24336713/the-coffin-lowry-syndrome-associated-protein-rsk2-regulates-neurite-outgrowth-through-phosphorylation-of-phospholipase-d1-pld1-and-synthesis-of-phosphatidic-acid
#16
Mohamed-Raafet Ammar, Yann Humeau, André Hanauer, Bernard Nieswandt, Marie-France Bader, Nicolas Vitale
More than 80 human X-linked genes have been associated with mental retardation and deficits in learning and memory. However, most of the identified mutations induce limited morphological alterations in brain organization and the molecular bases underlying neuronal clinical features remain elusive. We show here that neurons cultured from mice lacking ribosomal S6 kinase 2 (Rsk2), a model for the Coffin-Lowry syndrome (CLS), exhibit a significant delay in growth in a similar way to that shown by neurons cultured from phospholipase D1 (Pld1) knock-out mice...
December 11, 2013: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/24311527/classic-phenotype-of-coffin-lowry-syndrome-in-a-female-with-stimulus-induced-drop-episodes-and-a-genotype-with-preserved-n-terminal-kinase-domain
#17
Kitiwan Rojnueangnit, Julie R Jones, Monica J Basehore, Nathaniel H Robin
An adolescent female presented with intellectual disability, stimulus-induced drop episodes (SIDEs), facial characteristics that include wide set eyes, short nose with wide columella, full and everted lips with wide mouth and progressive skeletal changes: scoliosis, spondylolisthesis and pectus excavatum. These findings were suggestive of Coffin-Lowry syndrome (CLS), and this was confirmed by the identification of a novel mutation in RPS6KA3, a heterozygous one basepair duplication at nucleotide 1570 (c.1570dupA)...
February 2014: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/24086335/ribosomal-s6-kinase-2-rsk2-maintains-genomic-stability-by-activating-the-atm-p53-dependent-dna-damage-pathway
#18
Han Chi Lim, Li Xie, Wei Zhang, Rong Li, Zhong-Can Chen, Guang-Zhi Wu, Shu-Sen Cui, Eng King Tan, Li Zeng
Ribosomal S6 Kinase 2 (RSK2) is a member of the p90(RSK) family of serine/threonine kinases, which are widely expressed and respond to many growth factors, peptide hormones, and neurotransmitters. Loss-of function mutations in the RPS6KA3 gene, which encodes the RSK2 protein, have been implicated in Coffin-Lowry Syndrome (CLS), an X-linked mental retardation disorder associated with cognitive deficits and behavioral impairments. However, the cellular and molecular mechanisms underlying this neurological disorder are not known...
2013: PloS One
https://www.readbyqxmd.com/read/23985797/an-xp22-12-microduplication-including-rps6ka3-identified-in-a-family-with-variably-affected-intellectual-and-behavioral-disabilities
#19
Ayumi Matsumoto, Mari Kuwajima, Kunio Miyake, Karin Kojima, Naomi Nakashima, Eriko F Jimbo, Takeo Kubota, Mariko Y Momoi, Takanori Yamagata
The ribosomal protein S6 kinase, 90 kb, polypeptide 3 gene (RPS6KA3) is responsible for Coffin-Lowry syndrome (CLS), which is characterized by intellectual disability (ID) and facial and bony abnormalities. This gene also affects nonsyndromic X-linked ID and nonsyndromic X-linked ID without bony abnormalities. Two families have been previously reported to have genetic microduplication including RPS6KA3. In the present study, we used array-comparative genomic hybridization (CGH) analysis with Agilent Human genome CGH 180K and detected a 584-kb microduplication spanning 19...
November 2013: Journal of Human Genetics
https://www.readbyqxmd.com/read/23873216/mitral-and-tricuspid-valve-surgery-for-coffin-lowry-syndrome
#20
Takeshi Yoshida, Takeki Ohashi, Masato Furui, Souichirou Kageyama, Noriko Kodani, Yutaka Kobayashi, Yasutaka Hirai, Reo Sakakura
Coffin-Lowry syndrome is a rare X-linked disorder characterized by craniofacial and skeletal abnormalities, mental retardation, short stature, and hypotonia. An 18-year-old man with morphologic features characteristic of Coffin-Lowry syndrome was referred to our institution for valve disease surgery for worsening cardiac failure. Echocardiography showed severe mitral valve regurgitation associated with tricuspid valve regurgitation. Mitral valve implantation with a biological valve and tricuspid annular plication with a ring was performed...
May 2015: General Thoracic and Cardiovascular Surgery
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