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Zheng HY, Takasaka T, Noda K, Kanazawa A, Mori H, Kabuki T, Joh K, Oh-Ishi T, Ikegaya H, Nagashima K, Hall WW, Kitamura T, Yogo Y. New sequence polymorphisms in the outer loops of the JC polyomavirus major capsid protein (VP1) possibly associated with progressive multifocal leukoencephalopathy. J Gen Virol 2005; 86:2035-2045. [PMID: 15958683 DOI: 10.1099/vir.0.80863-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
JC polyomavirus(JCPyV) causes progressive multifocal leukoencephalopathy (PML) in patients with decreased immune competence. To elucidate genetic changes in JCPyV associated with the pathogenesis of PML, multiple complete JCPyV DNA clones originating from the brains of three PML cases were established and sequenced. Although unique rearranged control regions occurred in all clones, a low level of nucleotide variation was also found in the coding region. In each case, a parental coding sequence was identified, from which variant coding sequences with nucleotide substitutions would have been generated. A comparison between the parental and variant coding sequences demonstrated that all 12 detected nucleotide substitutions gave rise to amino acid changes. Interestingly, seven of these changes were located in the surface loops of the major capsid protein (VP1). Finally, 16 reported VP1 sequences of PML-type JCPyV (i.e. derived from the brain or cerebrospinal fluid of PML patients) were compared with their genotypic prototypes, generated as consensus sequences of representative archetypal isolates belonging to the same genotypes; 13 VP1 proteins had amino acid changes in the surface loops. In contrast, VP1 proteins from isolates from the urine of immunocompetent and immunosuppressed patients rarely underwent mutations in the VP1 loops. The present findings suggest that PML-type JCPyV frequently undergoes amino acid substitutions in the VP1 loops. These polymorphisms should serve as a new marker for the identification of JCPyV isolates associated with PML. The biological significance of these mutations, however, remains unclear.
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Affiliation(s)
- Huai-Ying Zheng
- Japanese Foundation for AIDS Prevention, Tokyo 105-0001, Japan
- Department of Urology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Tomokazu Takasaka
- Department of Urology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Kazuyuki Noda
- Department of Neurology, Juntendo University School of Medicine, Tokyo 113-0033, Japan
| | - Akira Kanazawa
- Department of Neurology, Juntendo University School of Medicine, Tokyo 113-0033, Japan
| | - Hideo Mori
- Department of Neurology, Juntendo University School of Medicine, Tokyo 113-0033, Japan
| | - Tomoyuki Kabuki
- Division of Infectious Diseases, Immunology and Allergy, Saitama Children's Medical Center, Iwatsuki 339-8551, Japan
| | - Kohsuke Joh
- Division of Infectious Diseases, Immunology and Allergy, Saitama Children's Medical Center, Iwatsuki 339-8551, Japan
| | - Tsutomu Oh-Ishi
- Division of Infectious Diseases, Immunology and Allergy, Saitama Children's Medical Center, Iwatsuki 339-8551, Japan
| | - Hiroshi Ikegaya
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Kazuo Nagashima
- Laboratory of Molecular and Cellular Pathology, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo 060-8638, CREST, Japan
| | - William W Hall
- Department of Medical Microbiology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Tadaichi Kitamura
- Department of Urology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Yoshiaki Yogo
- Department of Urology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
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ZHENG HUAIYING, IKEGAYA HIROSHI, NAKAJIMA MAKOTO, SAKURADA KOICHI, TAKASAKA TOMOKAZU, KITAMURA TADAICHI, YOGO YOSHIAKI. Two distinct genotypes (MY-x and MX) of JC virus previously identified in Hokkaido Ainu. ANTHROPOL SCI 2005. [DOI: 10.1537/ase.040716] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- HUAI-YING ZHENG
- Department of Urology, Faculty of Medicine, The University of Tokyo
- Japanese Foundation of AIDS Prevention
| | - HIROSHI IKEGAYA
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo
| | - MAKOTO NAKAJIMA
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo
| | | | | | | | - YOSHIAKI YOGO
- Department of Urology, Faculty of Medicine, The University of Tokyo
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ZHENG HUAIYING, KOJIMA KAZUO, IKEGAYA HIROSHI, TAKASAKA TOMOKAZU, KITAMURA TADAICHI, YOGO YOSHIAKI. JC virus genotyping suggests a close contact or affinity between Greenland Inuit and other circumarctic populations. ANTHROPOL SCI 2005. [DOI: 10.1537/ase.041221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- HUAI-YING ZHENG
- Department of Urology, Faculty of Medicine, The University of Tokyo
| | | | - HIROSHI IKEGAYA
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo
| | | | | | - YOSHIAKI YOGO
- Department of Urology, Faculty of Medicine, The University of Tokyo
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