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Two CpG islands in the SEMA3B gene: Methylation in clear cell renal cell carcinoma

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Abstract

Earlier, methylation of a CpG island in the SEMA3B gene (3p21.31) was observed in cell lines of small-cell and non-small-cell lung carcinoma. According to NCBI (Build 36), that island belonged to intron 1 of the gene. Our study concerns the methylation of two CpG islands, promoter and intronic, in the SEMA3B gene in patients with clear cell renal cell carcinoma (RCC). Methylation-specific PCR and bisulfite sequencing revealed a high frequency of methylation in the promoter CpG island (34/61, 56%) and somewhat lower, in the intronic (17/48, 35%). A significant inverse correlation was found between the SEMA3B mRNA level and methylation of the promoter CpG island in RCC (P < 0.05 according to Fisher’s exact test). The intronic island showed no such correlation. Thus, we suggest that the methylation of the promoter CpG island contributes to the inactivation of the SEMA3B suppressor gene in RCC tissue.

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Authors and Affiliations

  1. State Research Center GosNIIgenetika, Moscow, 117545, Russia

    V. I. Loginov, D. S. Khodyrev, I. V. Pronina, A. V. Malyukova & E. A. Braga

  2. Engelgardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia

    I. V. Pronina & E. R. Zabarovskii

  3. Microbiology, Cell Biology and Tumor Biology Center, Karolinska Institute, Stockholm, 17177, Sweden

    A. V. Malyukova & E. R. Zabarovskii

  4. N.N. Blokhin Russian Cancer Research Center, Russian Academy of Medical Sciences, Moscow, 115478, Russia

    T. P. Kazubskaya, V. D. Ermilova & R. F. Gar’kavtseva

Authors
  1. V. I. Loginov
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  2. D. S. Khodyrev
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  3. I. V. Pronina
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  4. A. V. Malyukova
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  5. T. P. Kazubskaya
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  6. V. D. Ermilova
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  7. R. F. Gar’kavtseva
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  8. E. R. Zabarovskii
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  9. E. A. Braga
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Corresponding author

Correspondence to V. I. Loginov.

Additional information

Original Russian Text © V.I. Loginov, D.S. Khodyrev, I.V. Pronina, A.V. Malyukova, T.P. Kazubskaya, V. D. Ermilova, R.F. Gar’kavtseva, E.R. Zabarovskii, E.A. Braga, 2009, published in Molekulyarnaya Biologiya, 2009, Vol. 43, No. 6, pp. 1088–1092.

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Loginov, V.I., Khodyrev, D.S., Pronina, I.V. et al. Two CpG islands in the SEMA3B gene: Methylation in clear cell renal cell carcinoma. Mol Biol 43, 1014–1018 (2009). https://doi.org/10.1134/S0026893309060156

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  • DOI: https://doi.org/10.1134/S0026893309060156

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