Cited by 150Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchEpilepsy research and treatment

Rett Syndrome: Crossing the Threshold to Clinical Translation

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Katz, David M., Bird, Adrian, Coenraads, Monica, Gray, Steven J., Menon, Debashish U., Philpot, Benjamin D., Tarquinio, Daniel C.·2016·Trends in Neurosciences

Abstract

Lying at the intersection between neurobiology and epigenetics, Rett syndrome (RTT) has garnered intense interest in recent years, not only from a broad range of academic scientists, but also from the pharmaceutical and biotechnology industries. In addition to the critical need for treatments for this devastating disorder, optimism for developing RTT treatments derives from a unique convergence of factors, including a known monogenic cause, reversibility of symptoms in preclinical models, a strong clinical research infrastructure highlighted by an NIH-funded natural history study and well-established clinics with significant patient populations. Here, we review recent advances in understanding the biology of RTT, particularly promising preclinical findings, lessons from past clinical trials, and critical elements of trial design for rare disorders.

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  • The consequences of MeCP2 dysfunction on neuronal networks have been extensively explored in mice lacking MeCP2 and those with a conditional hemizygous deletion, but the results vary considerably possibly due to differences in the age of the mice in the analysis and the specific characteristics of each cortical area.

    “The consequences of MeCP2 dysfunction on neuronal networks have been extensively explored in mice lacking MeCP2 and those with a conditional hemizygous deletion, but the results vary considerably possibly due to differences in the age of the mice in the analysis (juvenile, young adults and adults) and the specific characteristics of each cortical area 123,124 .”

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  1. [1]Amir RE, et al. Rett syndrome is caused by mutations in X-linked MECP2, encoding methyl-CpG-binding protein 2. Nat. Genet. 1999;23:185–188. doi: 10.1038/13810. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  2. [2]Katz DM, et al. Preclinical research in Rett syndrome: setting the foundation for translational success. Dis. Model. Mech. 2012;5:733–745. doi: 10.1242/dmm.011007. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  3. [3]Gadalla KK, et al. MeCP2 and Rett syndrome: reversibility and potential avenues for therapy. Biochem. J. 2011;439:1–14. doi: 10.1042/BJ20110648. [DOI] [PubMed] [Google Scholar] · DOI
  4. [5]Weng SM, et al. Rett syndrome: from bed to bench. Pediatr. Neonatol. 2011;52:309–316. doi: 10.1016/j.pedneo.2011.08.002. [DOI] [PubMed] [Google Scholar] · DOI
  5. [6]Pozzo-Miller L, et al. Rett Syndrome: reaching for clinical trials. Neurotherapeutics. 2015;12:631–640. doi: 10.1007/s13311-015-0353-y. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  6. [7]Ricceri L, et al. Rett syndrome treatment in mouse models: searching for effective targets and strategies. Neuropharmacology. 2013;68:106–115. doi: 10.1016/j.neuropharm.2012.08.010. [DOI] [PubMed] [Google Scholar] · DOI
  7. [8]Chapleau CA, et al. Recent progress in Rett Syndrome and MeCP2 dysfunction: assessment of potential treatment options. Future Neurol. 2013 doi: 10.2217/fnl.12.79. Published online January 1, 2013. http://dx.doi.org/10.2217/fnl.12.79. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  8. [9]Chahrour M, Zoghbi HY. The story of Rett syndrome: from clinic to neurobiology. Neuron. 2007;56:422–437. doi: 10.1016/j.neuron.2007.10.001. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  9. [10]Laurvick CL, et al. Rett syndrome in Australia: a review of the epidemiology. J. Pediatr. 2006;148:347–352. doi: 10.1016/j.jpeds.2005.10.037. [DOI] [PubMed] [Google Scholar] · DOI
  10. [12]Hagberg B. Clinical manifestations and stages of Rett syndrome. Ment. Retard. Dev. Disabil. Res. Rev. 2002;8:61–65. doi: 10.1002/mrdd.10020. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  11. [13]Neul JL. The relationship of Rett syndrome and MECP2 disorders to autism. Dialogues Clin. Neurosci. 2012;14:253–262. doi: 10.31887/DCNS.2012.14.3/jneul. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  12. [14]Rett A. On a unusual brain atrophy syndrome in hyperammonemia in childhood. Wien. Med. Wochenschr. 1966;116:723–726. [PubMed] [Google Scholar]
  13. [15]Neul JL, et al. Developmental delay in Rett syndrome: data from the natural history study. J. Neurodev. Disord. 2014;6:20. doi: 10.1186/1866-1955-6-20. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  14. [16]Wandin H, et al. Communication intervention in Rett syndrome: a survey of speech language pathologists in Swedish health services. Disabil. Rehabil. 2015;37:1324–1333. doi: 10.3109/09638288.2014.962109. [DOI] [PubMed] [Google Scholar] · DOI
  15. [17]Akbarian S. The neurobiology of Rett syndrome. Neuroscientist. 2003;9:57–63. doi: 10.1177/1073858402239591. [DOI] [PubMed] [Google Scholar] · DOI
  16. [18]Guy J, et al. Reversal of neurological defects in a mouse model of Rett syndrome. Science. 2007;315:1143–1147. doi: 10.1126/science.1138389. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  17. [19]Shepherd GM, Katz DM. Synaptic microcircuit dysfunction in genetic models of neurodevelopmental disorders: focus on Mecp2 and Met. Curr. Opin. Neurobiol. 2011;21:827–833. doi: 10.1016/j.conb.2011.06.006. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  18. [21]Chapleau CA, et al. Dendritic spine pathologies in hippocampal pyramidal neurons from Rett syndrome brain and after expression of Rett-associated MECP2 mutations. Neurobiol. Dis. 2009;35:219–233. doi: 10.1016/j.nbd.2009.05.001. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  19. [22]Samaco RC, et al. Loss of MeCP2 in aminergic neurons causes cell-autonomous defects in neurotransmitter synthesis and specific behavioral abnormalities. Proc. Natl. Acad. Sci. U.S.A. 2009;106:21966–21971. doi: 10.1073/pnas.0912257106. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  20. [23]Johnston MV, et al. Neurobiology of Rett syndrome. Neuropediatrics. 1995;26:119–122. doi: 10.1055/s-2007-979740. [DOI] [PubMed] [Google Scholar] · DOI
  21. [24]Blue ME, et al. Development of amino acid receptors in frontal cortex from girls with Rett syndrome. Ann. Neurol. 1999;45:541–545. doi: 10.1002/1531-8249(199904)45:4<541::aid-ana21>3.0.co;2-2. [DOI] [PubMed] [Google Scholar] · DOI
  22. [25]Wenk GL, et al. Altered neurochemical markers in Rett's syndrome. Neurology. 1991;41:1753–1756. doi: 10.1212/wnl.41.11.1753. [DOI] [PubMed] [Google Scholar] · DOI
  23. [26]Cohen S, Greenberg ME. Communication between the synapse and the nucleus in neuronal development, plasticity, and disease. Annu. Rev. Cell Dev. Biol. 2008;24:183–209. doi: 10.1146/annurev.cellbio.24.110707.175235. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  24. [27]Cheval H, et al. Postnatal inactivation reveals enhanced requirement for MeCP2 at distinct age windows. Hum. Mol. Genet. 2012;21:3806–3814. doi: 10.1093/hmg/dds208. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  25. [28]McGraw CM, et al. Adult neural function requires MeCP2. Science. 2011;333:186. doi: 10.1126/science.1206593. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  26. [29]McGann JC, et al. Astrocytes conspire with neurons during progression of neurological disease. Curr. Opin. Neurobiol. 2012;22:850–858. doi: 10.1016/j.conb.2012.03.009. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  27. [30]Blackman MP, et al. A critical and cell-autonomous role for MeCP2 in synaptic scaling up. J. Neurosci. 2012;32:13529–13536. doi: 10.1523/JNEUROSCI.3077-12.2012. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  28. [31]Dani VS, Nelson SB. Intact long-term potentiation but reduced connectivity between neocortical layer 5 pyramidal neurons in a mouse model of Rett syndrome. J. Neurosci. 2009;29:11263–11270. doi: 10.1523/JNEUROSCI.1019-09.2009. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  29. [32]Taneja P, et al. Pathophysiology of locus ceruleus neurons in a mouse model of Rett syndrome. J. Neurosci. 2009;29:12187–12195. doi: 10.1523/JNEUROSCI.3156-09.2009. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  30. [34]Kron M, et al. Brain activity mapping in Mecp2 mutant mice reveals functional deficits in forebrain circuits, including key nodes in the default mode network, that are reversed with ketamine treatment. J. Neurosci. 2012;32:13860–13872. doi: 10.1523/JNEUROSCI.2159-12.2012. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  31. [36]Durand S, et al. NMDA receptor regulation prevents regression of visual cortical function in the absence of Mecp2. Neuron. 2012;76:1078–1090. doi: 10.1016/j.neuron.2012.12.004. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  32. [37]Wood L, Shepherd GM. Synaptic circuit abnormalities of motor-frontal layer 2/3 pyramidal neurons in a mutant mouse model of Rett syndrome. Neurobiol. Dis. 2010;38:281–287. doi: 10.1016/j.nbd.2010.01.018. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  33. [38]Sceniak MP, et al. Mechanisms of functional hypoconnectivity in the medial prefrontal cortex of Mecp2 null mice. Cereb. Cortex. 2015 doi: 10.1093/cercor/bhv002. Published online February 7, 2015. http://dx.doi.org/10.1093/cercor/bhv002. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  34. [39]Kline DD, et al. Exogenous brain-derived neurotrophic factor rescues synaptic dysfunction in Mecp2-null mice. J. Neurosci. 2010;30:5303–5310. doi: 10.1523/JNEUROSCI.5503-09.2010. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  35. [40]Abdala AP, et al. Correction of respiratory disorders in a mouse model of Rett syndrome. Proc. Natl. Acad. Sci. U.S.A. 2010;107:18208–18213. doi: 10.1073/pnas.1012104107. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  36. [41]Calfa G, et al. Excitation/inhibition imbalance and impaired synaptic inhibition in hippocampal area CA3 of Mecp2 knockout mice. Hippocampus. 2015;25:159–168. doi: 10.1002/hipo.22360. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  37. [42]Zhang L, et al. The MeCP2-null mouse hippocampus displays altered basal inhibitory rhythms and is prone to hyperexcitability. Hippocampus. 2008;18:294–309. doi: 10.1002/hipo.20389. [DOI] [PubMed] [Google Scholar] · DOI
  38. [43]Luikenhuis S, et al. Expression of MeCP2 in postmitotic neurons rescues Rett syndrome in mice. Proc. Natl. Acad. Sci. U.S.A. 2004;101:6033–6038. doi: 10.1073/pnas.0401626101. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  39. [44]Van Esch H, et al. Duplication of the MECP2 region is a frequent cause of severe mental retardation and progressive neurological symptoms in males. Am. J. Hum. Genet. 2005;77:442–453. doi: 10.1086/444549. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  40. [45]del Gaudio D, et al. Increased MECP2 gene copy number as the result of genomic duplication in neurodevelopmentally delayed males. Genet. Med. 2006;8:784–792. doi: 10.1097/01.gim.0000250502.28516.3c. [DOI] [PubMed] [Google Scholar] · DOI
  41. [46]Meins M, et al. Submicroscopic duplication in Xq28 causes increased expression of the MECP2 gene in a boy with severe mental retardation and features of Rett syndrome. J. Med. Genet. 2005;42:e12. doi: 10.1136/jmg.2004.023804. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  42. [47]Heckman LD, et al. Rett-causing mutations reveal two domains critical for MeCP2 function and for toxicity in MECP2 duplication syndrome mice. Elife. 2014;3:02676. doi: 10.7554/eLife.02676. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  43. [49]Meng L, et al. Towards a therapy for Angelman syndrome by targeting a long non-coding RNA. Nature. 2015;518:409–412. doi: 10.1038/nature13975. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  44. [50]Yeung BH, et al. Evolution and roles of stanniocalcin. Mol. Cell. Endocrinol. 2012;349:272–280. doi: 10.1016/j.mce.2011.11.007. [DOI] [PubMed] [Google Scholar] · DOI
  45. [51]Bhatnagar S, et al. Genetic and pharmacological reactivation of the mammalian inactive X chromosome. Proc. Natl. Acad. Sci. U.S.A. 2014;111:12591–12598. doi: 10.1073/pnas.1413620111. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  46. [53]Duque S, et al. Intravenous administration of self-complementary AAV9 enables transgene delivery to adult motor neurons. Mol. Ther. 2009;17:1187–1196. doi: 10.1038/mt.2009.71. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  47. [55]Gadalla KK, et al. Improved survival and reduced phenotypic severity following AAV9/MECP2 gene transfer to neonatal and juvenile male Mecp2 knockout mice. Mol. Ther. 2013;21:18–30. doi: 10.1038/mt.2012.200. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  48. [56]Garg SK, et al. Systemic delivery of MeCP2 rescues behavioral and cellular deficits in female mouse models of Rett syndrome. J. Neurosci. 2013;33:13612–13620. doi: 10.1523/JNEUROSCI.1854-13.2013. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  49. [58]Deffit SN, Hundley HA. To edit or not to edit: regulation of ADAR editing specificity and efficiency. RNA. 2015 doi: 10.1002/wrna.1319. Published online November 26, 2015. http://dx.doi.org/10.1002/wrna.1319. [DOI] [PubMed] [Google Scholar] · DOI
  50. [59]Keeling KM, et al. Therapeutics based on stop codon readthrough. Annu. Rev. Genomics Hum. Genet. 2014;15:371–394. doi: 10.1146/annurev-genom-091212-153527. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  51. [60]Brendel C, et al. Readthrough of nonsense mutations in Rett syndrome: evaluation of novel aminoglycosides and generation of a new mouse model. J. Mol. Med. (Berl) 2011;89:389–398. doi: 10.1007/s00109-010-0704-4. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  52. [61]Ricceri L, et al. Mouse models of Rett syndrome: from behavioural phenotyping to preclinical evaluation of new therapeutic approaches. Behav. Pharmacol. 2008;19:501–517. doi: 10.1097/FBP.0b013e32830c3645. [DOI] [PubMed] [Google Scholar] · DOI
  53. [62]Ramirez JM, et al. Breathing challenges in Rett Syndrome: lessons learned from humans and animal models. Respir. Physiol. Neurobiol. 2013;189:280–287. doi: 10.1016/j.resp.2013.06.022. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  54. [63]Katz DM, et al. Breathing disorders in Rett syndrome: progressive neurochemical dysfunction in the respiratory network after birth. Respir. Physiol. Neurobiol. 2009;168:101–108. doi: 10.1016/j.resp.2009.04.017. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  55. [64]Patrizi A, et al. Chronic administration of the N-methyl-D-aspartate receptor antagonist ketamine improves Rett Syndrome phenotype. Biol. Psychiatry. 2015 doi: 10.1016/j.biopsych.2015.08.018. Published online August 24, 2015. http://dx.doi.org/10.1016/j.biopsych.2015.08.018. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  56. [65]Seamans J. Losing inhibition with ketamine. Nat. Chem. Biol. 2008;4:91–93. doi: 10.1038/nchembio0208-91. [DOI] [PubMed] [Google Scholar] · DOI
  57. [66]Jin YH, et al. Ketamine differentially blocks sensory afferent synaptic transmission in medial nucleus tractus solitarius (mNTS) Anesthesiology. 2003;98:121–132. doi: 10.1097/00000542-200301000-00021. [DOI] [PubMed] [Google Scholar] · DOI
  58. [67]Lepack AE, et al. BDNF release is required for the behavioral actions of ketamine. Int. J. Neuropsychopharmacol. 2015 doi: 10.1093/ijnp/pyu033. Published online October 31, 2014. http://dx.doi.org/10.1093/ijnp/pyu033. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  59. [68]Kavalali ET, Monteggia LM. Synaptic mechanisms underlying rapid antidepressant action of ketamine. Am. J. Psychiatry. 2012;169:1150–1156. doi: 10.1176/appi.ajp.2012.12040531. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  60. [69]Ricciardi S, et al. Reduced AKT/mTOR signaling and protein synthesis dysregulation in a Rett syndrome animal model. Hum. Mol. Genet. 2011;20:1182–1196. doi: 10.1093/hmg/ddq563. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  61. [70]Dwyer JM, Duman RS. Activation of mammalian target of rapamycin and synaptogenesis: role in the actions of rapid-acting antidepressants. Biol. Psychiatry. 2013;73:1189–1198. doi: 10.1016/j.biopsych.2012.11.011. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  62. [71]Bogaerts J, et al. Clinical trial designs for rare diseases: studies developed and discussed by the International Rare Cancers Initiative. Eur. J. Cancer. 2015;51:271–281. doi: 10.1016/j.ejca.2014.10.027. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  63. [72]Tudur Smith C, et al. Methodology of clinical trials for rare diseases. Best Pract. Res. Clin. Rheumatol. 2014;28:247–262. doi: 10.1016/j.berh.2014.03.004. [DOI] [PubMed] [Google Scholar] · DOI
  64. [73]van der Lee JH, et al. Efficient ways exist to obtain the optimal sample size in clinical trials in rare diseases. J. Clin. Epidemiol. 2008;61:324–330. doi: 10.1016/j.jclinepi.2007.07.008. [DOI] [PubMed] [Google Scholar] · DOI
  65. [74]Bauer P, Brannath W. The advantages and disadvantages of adaptive designs for clinical trials. Drug Discov. Today. 2004;9:351–357. doi: 10.1016/S1359-6446(04)03023-5. [DOI] [PubMed] [Google Scholar] · DOI
  66. [75]Gerss JW, Kopcke W. Clinical trials and rare diseases. Adv. Exp. Med. Biol. 2010;686:173–190. doi: 10.1007/978-90-481-9485-8_11. [DOI] [PubMed] [Google Scholar] · DOI
  67. [76]Takeuchi F, et al. Prednisolone improves walking in Japanese Duchenne muscular dystrophy patients. J. Neurol. 2013;260:3023–3029. doi: 10.1007/s00415-013-7104-y. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  68. [77]Blat Y, Blat S. Drug discovery of therapies for Duchenne muscular dystrophy. J. Biomol. Screen. 2015;20:1189–1203. doi: 10.1177/1087057115586535. [DOI] [PubMed] [Google Scholar] · DOI
  69. [78]Monros E, et al. Rett syndrome in Spain: mutation analysis and clinical correlations. Brain Dev. 2001;23(Suppl. 1):S251–S253. doi: 10.1016/s0387-7604(01)00374-6. [DOI] [PubMed] [Google Scholar] · DOI
  70. [79]FitzGerald PM, et al. Rett syndrome and associated movement disorders. Mov. Disord. 1990;5:195–202. doi: 10.1002/mds.870050303. [DOI] [PubMed] [Google Scholar] · DOI
  71. [80]Cuddapah VA, et al. Methyl-CpG-binding protein 2 (MECP2) mutation type is associated with disease severity in Rett syndrome. J. Med. Genet. 2014;51:152–158. doi: 10.1136/jmedgenet-2013-102113. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  72. [81]Motil KJ, et al. Gastrointestinal and nutritional problems occur frequently throughout life in girls and women with Rett syndrome. J. Pediatr. Gastroenterol. Nutr. 2012;55:292–298. doi: 10.1097/MPG.0b013e31824b6159. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  73. [82]Glaze DG, et al. Epilepsy and the natural history of Rett syndrome. Neurology. 2010;74:909–912. doi: 10.1212/WNL.0b013e3181d6b852. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  74. [83]Percy AK, et al. Rett syndrome: controlled study of an oral opiate antagonist, naltrexone. Ann. Neurol. 1994;35:464–470. doi: 10.1002/ana.410350415. [DOI] [PubMed] [Google Scholar] · DOI
  75. [84]Glaze DG, et al. A study of the treatment of Rett syndrome with folate and betaine. J. Child Neurol. 2009;24:551–556. doi: 10.1177/0883073808327827. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  76. [85]Khwaja OS, et al. Safety, pharmacokinetics, and preliminary assessment of efficacy of mecasermin (recombinant human IGF-1) for the treatment of Rett syndrome. Proc. Natl. Acad. Sci. U.S.A. 2014;111:4596–4601. doi: 10.1073/pnas.1311141111. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  77. [86]Hagebeuk EE, et al. Folinic acid supplementation in Rett syndrome patients does not influence the course of the disease: a randomized study. J. Child Neurol. 2012;27:304–309. doi: 10.1177/0883073811417184. [DOI] [PubMed] [Google Scholar] · DOI
  78. [87]Kesselheim AS, Gagne JJ. Strategies for post-marketing surveillance of drugs for rare diseases. Clin. Pharmacol. Ther. 2014;95:265–268. doi: 10.1038/clpt.2013.218. [DOI] [PubMed] [Google Scholar] · DOI
  79. [88]Hampson LV, et al. Elicitation of expert prior opinion: application to the MYPAN trial in childhood polyarteritis nodosa. PLoS ONE. 2015;10:e0120981. doi: 10.1371/journal.pone.0120981. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  80. [89]Lewis JD, et al. Purification, sequence and cellular localisation of a novel chromosomal protein that binds to methylated DNA. Cell. 1992;69:905–914. doi: 10.1016/0092-8674(92)90610-o. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  81. [90]Nan X, et al. Dissection of the methyl-CpG binding domain from the chromosomal protein MeCP2. Nucleic Acids Res. 1993;21:4886–4892. doi: 10.1093/nar/21.21.4886. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  82. [91]Skene PJ, et al. Neuronal MeCP2 is expressed at near histone-octamer levels and globally alters the chromatin state. Mol. Cell. 2010;37:457–468. doi: 10.1016/j.molcel.2010.01.030. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  83. [92]Baubec T, et al. Methylation-dependent and -independent genomic targeting principles of the MBD protein family. Cell. 2013;153:480–492. doi: 10.1016/j.cell.2013.03.011. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  84. [93]Guo JU, et al. Distribution, recognition and regulation of non-CpG methylation in the adult mammalian brain. Nat. Neurosci. 2014;17:215–222. doi: 10.1038/nn.3607. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  85. [96]Valinluck V, et al. Oxidative damage to methyl-CpG sequences inhibits the binding of the methyl-CpG binding domain (MBD) of methyl-CpG binding protein 2 (MeCP2) Nucleic Acids Res. 2004;32:4100–4108. doi: 10.1093/nar/gkh739. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  86. [97]Deaton AM, Bird A. CpG islands and the regulation of transcription. Genes Dev. 2011;25:1010–1022. doi: 10.1101/gad.2037511. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  87. [99]Ballestar E, et al. Effects of Rett syndrome mutations of the methyl-CpG binding domain of the transcriptional repressor MeCP2 on selectivity for association with methylated DNA. Biochemistry. 2000;39:7100–7106. doi: 10.1021/bi0001271. [DOI] [PubMed] [Google Scholar] · DOI
  88. [100]Lyst MJ, et al. Rett syndrome mutations abolish the interaction of MeCP2 with the NCoR/SMRT co-repressor. Nat. Neurosci. 2013;16:898–902. doi: 10.1038/nn.3434. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  89. [101]Lyst MJ, Bird A. Rett syndrome: a complex disorder with simple roots. Nat. Rev. Genet. 2015;16:261–275. doi: 10.1038/nrg3897. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  90. [102]Nan X, et al. MeCP2 is a transcriptional repressor with abundant binding sites in genomic chromatin. Cell. 1997;88:471–481. doi: 10.1016/s0092-8674(00)81887-5. [DOI] [PubMed] [Google Scholar] · DOI
  91. [103]Nan X, et al. Transcriptional repression by the methyl-CpG-binding protein MeCP2 involves a histone deacetylase complex. Nature. 1998;393:386–389. doi: 10.1038/30764. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  92. [104]Ben-Shachar S, et al. Mouse models of MeCP2 disorders share gene expression changes in the cerebellum and hypothalamus. Hum. Mol. Genet. 2009;18:2431–2442. doi: 10.1093/hmg/ddp181. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  93. [106]Li Y, et al. Global transcriptional and translational repression in human-embryonic-stem-cell-derived Rett syndrome neurons. Cell Stem Cell. 2013;13:446–458. doi: 10.1016/j.stem.2013.09.001. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  94. [107]Yazdani M, et al. Disease modeling using embryonic stem cells: MeCP2 regulates nuclear size and RNA synthesis in neurons. Stem Cells. 2012;30:2128–2139. doi: 10.1002/stem.1180. [DOI] [PubMed] [Google Scholar] · DOI
  95. [108]Cheng TL, et al. MeCP2 suppresses nuclear microRNA processing and dendritic growth by regulating the DGCR8/Drosha complex. Dev. Cell. 2014;28:547–560. doi: 10.1016/j.devcel.2014.01.032. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  96. [110]Horike S, et al. Loss of silent-chromatin looping and impaired imprinting of DLX5 in Rett syndrome. Nat. Genet. 2005;37:31–40. doi: 10.1038/ng1491. [DOI] [PubMed] [Google Scholar] · DOI
  97. [112]Ausio J, et al. MeCP2: the long trip from a chromatin protein to neurological disorders. Trends Mol. Med. 2014;20:487–498. doi: 10.1016/j.molmed.2014.03.004. [DOI] [PubMed] [Google Scholar] · DOI · Paper page
  98. [113]Haas RH, et al. Therapeutic effects of a ketogenic diet in rett syndrome. Am. J. Med. Genet. 1986;25:225–246. doi: 10.1002/ajmg.1320250525. [DOI] [PubMed] [Google Scholar] · DOI
  99. [114]Zappella M. A double blind trial of bromocriptine in the Rett syndrome. Brain Dev. 1990;12:148–150. doi: 10.1016/s0387-7604(12)80198-7. [DOI] [PubMed] [Google Scholar] · DOI
  100. [115]Ellaway C, et al. Rett syndrome: randomized controlled trial of L-carnitine. J. Child Neurol. 1999;14:162–167. doi: 10.1177/088307389901400306. [DOI] [PubMed] [Google Scholar] · DOI
  101. [116]Ellaway CJ, et al. Medium-term open label trial of L-carnitine in Rett syndrome. Brain Dev. 2001;23(Suppl. 1):S85–S89. doi: 10.1016/s0387-7604(01)00346-1. [DOI] [PubMed] [Google Scholar] · DOI
  102. [117]Temudo T, et al. Evaluation of CSF neurotransmitters and folate in 25 patients with Rett disorder and effects of treatment. Brain Dev. 2009;31:46–51. doi: 10.1016/j.braindev.2008.05.003. [DOI] [PubMed] [Google Scholar] · DOI
  103. [118]Hagebeuk EE, et al. Clinical and electroencephalographic effects of folinic acid treatment in Rett syndrome patients. J. Child Neurol. 2011;26:718–723. doi: 10.1177/0883073810390037. [DOI] [PubMed] [Google Scholar] · DOI
  104. [119]Freilinger M, et al. Effects of creatine supplementation in Rett syndrome: a randomized, placebo-controlled trial. J. Dev. Behav. Pediatr. 2011;32:454–460. doi: 10.1097/DBP.0b013e31822177a8. [DOI] [PubMed] [Google Scholar] · DOI
  105. [120]Leoncini S, et al. Oxidative stress in Rett syndrome: natural history, genotype, and variants. Redox Rep. 2011;16:145–153. doi: 10.1179/1351000211Y.0000000004. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI · Paper page
  106. [121]Signorini C, et al. F(4)-neuroprostanes mediate neurological severity in Rett syndrome. Clin. Chim. Acta. 2011;412:1399–1406. doi: 10.1016/j.cca.2011.04.016. [DOI] [PubMed] [Google Scholar] · DOI
  107. [122]Pini G, et al. IGF1 as a potential treatment for Rett Syndrome: safety assessment in six Rett patients. Autism Res. Treat. 2012;2012:679801. doi: 10.1155/2012/679801. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  108. [123]De Felice C, et al. Partial rescue of Rett syndrome by omega-3 polyunsaturated fatty acids (PUFAs) oil. Genes Nutr. 2012;7:447–458. doi: 10.1007/s12263-012-0285-7. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI
  109. [124]Maffei S, et al. Effects of omega-3 PUFAs supplementation on myocardial function and oxidative stress markers in typical Rett syndrome. Mediators of Inflamm. 2014;2014:983178. doi: 10.1155/2014/983178. [DOI] [PMC free article] [PubMed] [Google Scholar] · DOI

Authors
Katz, D. M., Bird, A., Coenraads, M., Gray, S. J., Menon, D. U., Philpot, B. D., & Tarquinio, D. C.
Affiliations
  • Case Western Reserve University (US)
  • Wellcome Centre for Cell Biology (GB)
  • Rett Syndrome Research Trust (US)
  • University of North Carolina at Chapel Hill (US)
  • Emory University (US)
Corresponding author
Katz, David M.
Venue
Trends in Neurosciences
Publisher
Elsevier BV
Published
2016-02
Volume
39
Issue
2
Pages
100-113
ISSN
0166-2236 (ISSN-L)
OpenAlex
W2263028779
Cited by
150
References
128
Citations by year
2026: 7 · 2025: 4 · 2024: 11 · 2023: 8 · 2022: 15 · 2021: 14 · 2020: 21 · 2019: 23 · 2018: 15 · 2017: 19 · 2016: 13
FWCI
3.12
Type
journal article
Language
en
Open access
Locations
  • Trends in Neurosciences (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Wellcome Trust (107930/Z/15/Z, 092076, 091580)
  • National Institute of Mental Health (R01MH093372)
  • National Institute of Neurological Disorders and Stroke (R01NS085093, P30NS045892, R01NS057398, R21NS087132)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD036655)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
Keywords
Rett syndrome, clinical translation, epigenetics, neurobiology, preclinical models, natural history research, rare diseases, clinical trial design, drug development
MeSH terms
Animals, Clinical Trials as Topic, Humans, Mutation, Rett Syndrome, Epigenesis, Genetic, Translational Research, Biomedical

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