Research Topics
Genomes and Genes
| Takanori YokotaSummaryAffiliation: Tokyo Medical and Dental University Country: Japan Publications
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Detail Information
Publications
Delayed-onset ataxia in mice lacking alpha -tocopherol transfer protein: model for neuronal degeneration caused by chronic oxidative stressT Yokota
Department of Neurology, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
Proc Natl Acad Sci U S A 98:15185-90. 2001..Moreover, alpha-TTP(-/-) mice may prove to be excellent animal models of delayed onset, slowly progressive neuronal degeneration caused by chronic oxidative stress...
[Gene therapy of virus replication with RNAi]Takanori Yokota
Department of Neurology and Neurological Science, Tokyo Medical and Dental University
Uirusu 55:1-7. 2005..There are still important problems for application of gene therapy including off-target effect and gene delivery of siRNA, but a rapid progress can be expected because of the extremely high efficiency of siRNA...
Efficient regulation of viral replication by siRNA in a non-human primate surrogate model for hepatitis CTakanori Yokota
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
Biochem Biophys Res Commun 361:294-300. 2007..Our results suggest the feasibility of systemic administration of CL-siRNA as an antiviral strategy...
siRNA-based inhibition specific for mutant SOD1 with single nucleotide alternation in familial ALS, compared with ribozyme and DNA enzymeTakanori Yokota
Department of Neurology, Tokyo Medical and Dental University, Tokyo, Japan
Biochem Biophys Res Commun 314:283-91. 2004..Our results support the feasibility of utilizing siRNA-based gene therapy of familial ALS with mutant SOD1...
Down regulation of DJ-1 enhances cell death by oxidative stress, ER stress, and proteasome inhibitionTakanori Yokota
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, 113 8519, Tokyo, Japan
Biochem Biophys Res Commun 312:1342-8. 2003..These results suggest that loss of protective activity of DJ-1 from neuro-toxicity induced by these stresses contributes to neuronal cell death in AR-EOP with mutant DJ-1...
Inhibition of intracellular hepatitis C virus replication by synthetic and vector-derived small interfering RNAsTakanori Yokota
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
EMBO Rep 4:602-8. 2003..Our results support the feasibility of using siRNA-based gene therapy to inhibit HCV replication, which may prove to be valuable in the treatment of hepatitis C...
Inhibition of hepatitis C virus infection and expression in vitro and in vivo by recombinant adenovirus expressing short hairpin RNANaoya Sakamoto
Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University, Tokyo, Japan
J Gastroenterol Hepatol 23:1437-47. 2008..In this study, we investigated the effects of the siRNA targeting HCV-RNA in vivo...
Depletion of vitamin E increases amyloid beta accumulation by decreasing its clearances from brain and blood in a mouse model of Alzheimer diseaseYoichiro Nishida
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519 Japan
J Biol Chem 284:33400-8. 2009..These results suggest that lipid peroxidation due to depletion of alpha-tocopherol impairs Abeta clearances from the brain and from the blood, possibly causing increased Abeta accumulation in Ttpa(-/-)APPsw mouse brain and plasma...
In vivo application of an RNAi strategy for the selective suppression of a mutant alleleTakayuki Kubodera
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan
Hum Gene Ther 22:27-34. 2011..Our method may prove useful for siRNA-based gene therapy for dominantly inherited diseases...
Transgenic small interfering RNA halts amyotrophic lateral sclerosis in a mouse modelYuki Saito
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519
J Biol Chem 280:42826-30. 2005..Our findings clearly proved the principle that siRNA-mediated gene silencing can stop the development of familial ALS with SOD1 mutation...
Escape from the interferon response associated with RNA interference using vectors that encode long modified hairpin-RNAHideo Akashi
Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Tokyo, Japan
Mol Biosyst 1:382-90. 2005..Our findings should enhance the exploitation of RNAi in mammalian cells, especially in the field of RNAi therapy against pathogenic viruses...
Intrathecal shRNA-AAV9 inhibits target protein expression in the spinal cord and dorsal root ganglia of adult miceTakashi Hirai
Department of Orthopedic Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo 113 8519, Japan
Hum Gene Ther Methods 23:119-27. 2012....
Deletion of vitamin E enhances phenotype of Alzheimer disease model mouseYoichiro Nishida
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Tokyo 113 8519, Japan
Biochem Biophys Res Commun 350:530-6. 2006..In this report we provide clear evidence indicating that chronic lipid peroxidation due to alpha-Toc depletion enhances AD phenotype in a mouse model...
Silencing efficiency differs among tissues and endogenous microRNA pathway is preserved in short hairpin RNA transgenic miceHiroki Sasaguri
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
FEBS Lett 583:213-8. 2009..Neither endogenous miRNAs nor their target gene levels were altered, indicating the preservation of endogenous miRNA pathways. We think that the shRNA transgenic mice can be utilized for gene analysis...
[Gene therapy of ALS with RNA interference]Takanori Yokota
Department of Neurology and Neurological Science, Tokyo Medical and Dental University
Rinsho Shinkeigaku 49:821-3. 2009..There are still important problems for application of gene therapy including off-target effect and gene delivery of siRNA, but a rapid progress can be expected because of the extremely high efficiency of siRNA...
Intraperitoneal AAV9-shRNA inhibits target expression in neonatal skeletal and cardiac musclesAzat Mayra
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
Biochem Biophys Res Commun 405:204-9. 2011..This novel method may be useful for generating gene knockdown in skeletal and cardiac mouse tissues, thus providing mouse models useful for analyzing diseases caused by loss-of-function of target genes...
Motor nerve conduction study in cauda equina with high-voltage electrical stimulation in multifocal motor neuropathy and amyotrophic lateral sclerosisMiho Akaza
Department of Neurology and Neurological Science, Tokyo Medical and Dental University Graduate School, Tokyo 113 8519, Japan
Muscle Nerve 43:274-82. 2011..Cauda equina motor conduction is better evaluated by HV-ES than with F-wave study or magnetic stimulation. HV-ES can help to distinguish MMN and "MMN without CB" from ALS...
Efficient in vivo delivery of siRNA to the liver by conjugation of alpha-tocopherolKazutaka Nishina
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Bunkyo ku, Tokyo, Japan
Mol Ther 16:734-40. 2008..These findings indicate that Toc-siRNA is effective and safe for RNA interference-mediated gene silencing in vivo...
Efficient in vivo delivery of siRNA into brain capillary endothelial cells along with endogenous lipoproteinHiroya Kuwahara
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Mol Ther 19:2213-21. 2011..These findings indicate that siRNA can be delivered into BCECs in vivo by using endogenous lipoprotein, which could make this strategy useful as a new gene silencing therapy for diseases involving BCECs...
Non-human primate model of amyotrophic lateral sclerosis with cytoplasmic mislocalization of TDP-43Azusa Uchida
Department of Neurology and Neurological Science, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo 113 8519, Japan
Brain 135:833-46. 2012....
[Gene therapy of ALS with short interfering RNA]Takanori Yokota
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
Brain Nerve 59:1187-94. 2007..There are still important problems for application of gene therapy including off-target effect and gene delivery of siRNA, but a rapid progress can be expected because of the extremely high efficiency of siRNA...
In vivo delivery of small interfering RNA targeting brain capillary endothelial cellsTaro Hino
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Biochem Biophys Res Commun 340:263-7. 2006..The in vivo siRNA-silencing method with hydrodynamic technique may be useful for the study of BBB function and gene therapy targeting BCECs...
High-density lipoprotein facilitates in vivo delivery of α-tocopherol-conjugated short-interfering RNA to the brainYoshitaka Uno
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Bunkyo ku, Tokyo 113 0034, Japan
Hum Gene Ther 22:711-9. 2011..These results suggest exogenous siRNA could be used clinically for otherwise incurable neurological diseases...
Can regional spreading of amyotrophic lateral sclerosis motor symptoms be explained by prion-like propagation?Tadashi Kanouchi
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan
J Neurol Neurosurg Psychiatry 83:739-45. 2012....
ALS-linked mutant SOD1 induces ER stress- and ASK1-dependent motor neuron death by targeting Derlin-1Hideki Nishitoh
Core Research for Evolutional Science and Technology CREST, Japan Science and Technology Corporation, Bunkyo ku, Tokyo 113 0033, Japan
Genes Dev 22:1451-64. 2008..These findings demonstrate that ER stress-induced ASK1 activation, which is triggered by the specific interaction of Derlin-1 with SOD1(mut), is crucial for disease progression of familial ALS...
New RNAi strategy for selective suppression of a mutant allele in polyglutamine diseaseTakayuki Kubodera
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8519, Japan
Oligonucleotides 15:298-302. 2005..Here, we applied this method to spinocerebellar ataxia type 6 (SCA6). We discuss its feasibility and problems for future gene therapy...
[RNAi and neurological disease]Takanori Yokota
Department of Neurology and Neurological Science, Tokyo Medical and Dental University
Rinsho Shinkeigaku 45:973-5. 2005..Our results support the feasibility of utilizing siRNA-based gene therapy of neurodegenerative diseases of autosomal dominant inheritance...
Genetic vitamin E deficiency does not affect MPTP susceptibility in the mouse brainYong Ri Ren
Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
J Neurochem 98:1810-6. 2006..Our results suggest that vitamin E does not play a major protective role in MPTP-induced nigrostriatal dopaminergic neurodegeneration in the brain...
Chronic inflammatory demyelinating polyradiculoneuropathy in a patient with Crohn's diseaseMasaki Ohyagi
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Japan
Intern Med 52:125-8. 2013..Plasma exchanges were initially effective; however, the effects gradually declined starting 10 days after the plasma exchange (PE). These results suggest that humoral factors may play an important role in CIDP associated with CD...
Proliferating immature Schwann cells contribute to nerve regeneration after ischemic peripheral nerve injuryMasaki Kobayashi
Department of Neurology and Neurological Science, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
J Neuropathol Exp Neurol 71:511-9. 2012..The manipulation of this population of proliferating immature Schwann cells may be a useful strategy for treating ischemic peripheral neuropathy...
Sequence-dependent and independent inhibition specific for mutant ataxin-3 by small interfering RNAYi Li
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
Ann Neurol 56:124-9. 2004..5%) by this siRNA possibly due to difference of the secondary structure of the target RNA. This is the first report of sequence-independent discrimination of mutant and wild-type alleles by siRNA...
Introduction of short interfering RNA to silence endogenous E-selectin in vascular endothelium leads to successful inhibition of leukocyte adhesionYasunobu Nishiwaki
Department of Medical Biochemistry, Tokyo Medical and Dental University, Tokyo, Japan
Biochem Biophys Res Commun 310:1062-6. 2003..03). This technique provides a powerful strategy to dissect a specific function of a given molecule in leukocyte-endothelial interaction...
An autosomal dominant cerebellar ataxia linked to chromosome 16q22.1 is associated with a single-nucleotide substitution in the 5' untranslated region of the gene encoding a protein with spectrin repeat and Rho guanine-nucleotide exchange-factor domainsKinya Ishikawa
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Yushima, Tokyo, Japan
Am J Hum Genet 77:280-96. 2005....
Down-regulation of alpha-synuclein expression can rescue dopaminergic cells from cell death in the substantia nigra of Parkinson's disease rat modelHiromi Hayashita-Kinoh
Research Institute for Diseases of Old Age, Juntendo University, Tokyo, Japan
Biochem Biophys Res Commun 341:1088-95. 2006..Down-regulation of alpha-synuclein expression could be potentially a suitable target for gene therapy of Parkinson's disease...
Skeletal muscle MRI in complex regional pain syndromeYoichiro Nishida
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Tokyo
Intern Med 48:209-12. 2009..The aim of this study was to clarify whether or not the affected muscles in CRPS patients show abnormal MRI signal intensities or signal enhancement by gadolinium dimeglumine during the acute phase...
Posthyperventilatory steal response in chronic cerebral hemodynamic stress: a positron emission tomography studyT Nariai
Department of Neurosurgery, School of Medicine, Tokyo Medical and Dental University, and the Positron Medical Center, Japan
Stroke 29:1281-92. 1998....
High voltage electrical stimulation of the proximal hypoglossal nerve in normal subjectsA Inaba
Department of Neurology, Tokyo Medical and Dental University, 5 45, Yushima 1 chome, Bunkyo ku, Tokyo, Japan
Clin Neurophysiol 113:925-9. 2002..Therefore, we tested an improved method of stimulating the proximal hypoglossal nerve, using high voltage electrical stimulation...
[Optic nerve swelling and gadolinium contrast enhancement on magnetic resonance imaging in the subacute stage of Leber's hereditary optic neuropathy: a case report]Misako Furuki
Department of Neurology and Neurological Science, Tokyo Medical and Dental University
Rinsho Shinkeigaku 52:102-5. 2012..The present case also suggests that mitochondrial dysfunction may trigger the onset of MS-like extraocular symptoms in patients with LHON...
[Two distinct types of neuropathy associated with Sjögren's syndrome developed in one patient. The importance of the selection of an appropriate therapeutic regimen]Yoshimasa Noguchi
Department of Neurology and Neurological Science, Tokyo Medical and Dental University
Rinsho Shinkeigaku 43:539-43. 2003....
Interferon regulatory factor 1 (IRF-1) and IRF-2 distinctively up-regulate gene expression and production of interleukin-7 in human intestinal epithelial cellsShigeru Oshima
Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
Mol Cell Biol 24:6298-310. 2004....
Proteolytic cleavage and cellular toxicity of the human alpha1A calcium channel in spinocerebellar ataxia type 6Takayuki Kubodera
Department of Neurology and Neurological Science, Graduate School of Medicine, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
Neurosci Lett 341:74-8. 2003..We speculate that the toxic C-terminal fragment, in which resistance to proteolysis is rendered by the expanded polyglutamine, has a key role in the pathological mechanism of SCA6...
[MicroRNA and central nervous system]Takanori Yokota
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
Brain Nerve 61:167-76. 2009..Research on miRNAs in the context of neurodegeneration has been rapidly advancing, and the goal of this review is to provide perspective for new data that may aid specialists in this field...
[Blood-brain barrier and Alzheimer's disease]Hiroya Kuwahara
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan
Brain Nerve 65:145-51. 2013..This review highlights the roles of the BBB in AD pathomechanism and its importance in designing therapeutic strategies...
Distal hyperintense vessels on FLAIR images predict large-artery stenosis in patients with transient ischemic attackKotaro Yoshioka
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, 1 5 45, Yushima, Bunkyo ku, Tokyo 113 0034, Japan
Neuroradiology 55:165-9. 2013..Despite its relevance to patient care outcomes, the presence of DHV has not been evaluated in patients with transient ischemic attack (TIA)...
Short interfering RNA and the central nervous system: development of nonviral delivery systemsKazutaka Nishina
Tokyo Medical and Dental University, Graduate School, Department of Neurology and Neurological Science, Tokyo 113 8519, Japan
Expert Opin Drug Deliv 10:289-92. 2013..This editorial describes different approaches that are being used to efficiently deliver siRNA to the CNS via intravenous, intracerebroventricular, or intranasal administration...
Spinal epidural abscess caused by bacteroides fragilis group after dilation and curettage for incomplete abortionMasaki Ohyagi
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan
J Glob Infect Dis 4:132-4. 2012..The diagnosis of SEA was done by MRI and pus was drained after the cervical discectomy. Bacteroides fragilis group was cultured from the aspirated pus sample. The patient responded to surgical drainage and antibiotics...
[Rapid progressive HTLV-1-associated myelopathy with bronchoalveolar lesions and a long spinal cord lesion extending to almost the entire spinal cord]Ryo Itami
Department of Neurology and Neurological Science, Tokyo Medical and Dental University
Rinsho Shinkeigaku 51:130-4. 2011..Further, careful investigation to detect pulmonary lesions, which are reported to be asymptomatic in most cases, is useful to confirm a diagnosis of HAM...
Electrophysiological features of central motor conduction in spinocerebellar atrophy type 1, type 2, and Machado-Joseph diseaseT Yokota
Department of Neurology, Tokyo Medical and Dental University, Japan
J Neurol Neurosurg Psychiatry 65:530-4. 1998..To characterise electrophysiologically the central motor conduction of spinocerebellar atrophy type 1 (SCA1), type 2 (SCA2), and Machado-Joseph disease (MJD)...
Electrophysiological evaluation of conduction in the most proximal motor root segmentAkira Inaba
Department of Neurology, Tokyo Medical and Dental University, 5-45, Yushima 1-chome, Bunkyo-ku, Tokyo, 113-8519 Japan
Muscle Nerve 25:608-11. 2002..These findings suggest that the RCT and minimal threshold for CMS might be additional parameters for evaluating motor nerve conduction in IDP...
[Multiple cerebral embolism caused by a patent foramen ovale and a uterine myoma]Zen Kobayashi
Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Graduate School of Medicine. Tokyo, Japan
No To Shinkei 55:705-8. 2003..An uterine myoma should be considered as an important risk factor for an embolic source in case of cerebral embolism with PFO...
[Detection of the primary tumor site in tumor-induced osteomalacia by indium-111 octreotide scintigraphy: a case report]Makoto Takahashi
Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University
Rinsho Shinkeigaku 48:120-4. 2008..This is the first case report in Japan describing the detection of the primary tumor site by indium-111 octreotide scintigraphy...
Postmortem study of ataxia with retinitis pigmentosa by mutation of the alpha-tocopherol transfer protein geneT Yokota
Department of Neurology, Tokyo Medical and Dental University, 1 5 45 Yushima, Bunkyo ku, Tokyo 113 8519, Japan
J Neurol Neurosurg Psychiatry 68:521-5. 2000..It is therefore considered that oral supplementation of vitamin E should effectively counteract the progression of ataxia...
Proximal motor conduction evaluated by transcranial magnetic stimulation in acquired inflammatory demyelinating neuropathiesA Inaba
Clinical Laboratory, Tokyo Medical and Dental University Medical Hospital, 5-45 Yushima 1-chome, Bunkyo-ku, 113-8519, Tokyo, Japan
Clin Neurophysiol 112:1936-45. 2001....
Somatosensory-evoked cortical potential during attacks of paroxysmal dysesthesia in multiple sclerosisS Toru
Department of Neurology, Tokyo Medical and Dental University, Tokyo, Japan
Eur J Neurol 12:233-4. 2005..We report the interesting finding of somatosensory-evoked potentials (SEPs) in a patient with MS during a paroxysmal dysesthesia attack...
Molecular cloning of a novel Xenopus spalt gene (Xsal-3)Y Onuma
Department of Life Sciences, CREST Project, University of Tokyo, Komaba, Meguro ku, Tokyo, 153 8902, Japan
Biochem Biophys Res Commun 264:151-6. 1999..These findings suggest that Xsal-3 may have distinct roles in early Xenopus development...
Cefpodoxime proxetil, its in vitro antibacterial activity, affinity to bacterial penicillin-binding proteins, and synergy of bactericidal activity with serum complement and mouse-cultured macrophagesT Yokota
Department of Bacteriology, School of Medicine, Juntendo University, Tokyo, Japan
Drugs Exp Clin Res 14:495-500. 1988..aureus 209P were well engulfed and rapidly digested by mouse-cultured macrophages in the presence of greater than 1/8 MIC of R-3746. Good clinical efficacy can be expected of CS-807 provided its pharmacokinetics prove to be good...
Clinicopathological report of retinitis pigmentosa with vitamin E deficiency caused by mutation of the alpha-tocopherol transfer protein geneJ Pang
Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, Graduate School, Tokyo, Japan
Jpn J Ophthalmol 45:672-6. 2001..The mild Friedreich-type ataxia accompanying the RP may be helpful in identifying this disease...
Coupling endoplasmic reticulum stress to the cell death program: role of the ER chaperone GRP78Rammohan V Rao
Buck Institute for Age Research, 8001 Redwood Boulevard, Novato, CA 94945 1400, USA
FEBS Lett 514:122-8. 2002..These results define a novel protective role for GRP78 in preventing ER stress-induced cell death...
Selective gene silencing of rat ATP-binding cassette G2 transporter in an in vitro blood-brain barrier model by short interfering RNASatoko Hori
Department of Molecular Biopharmacy and Genetics, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
J Neurochem 93:63-71. 2005..This should be a useful and novel strategy for clarifying the contribution of rABCG2 to brain-to-blood transport of substrate drugs and endogenous compounds across the blood-brain barrier...
Increase of disease duration of amyotrophic lateral sclerosis in a mouse model by transgenic small interfering RNATakanori Yokota
Arch Neurol 64:145-6. 2007
