Biochemistry (Moscow)

, Volume 79, Issue 12, pp 1412–1422 | Cite as

Mouse lymphomyeloid cells can function with significantly decreased expression levels of cytochrome c

  • E. S. ShilovEmail author
  • I. V. Kislyakov
  • E. A. Gorshkova
  • R. V. Zvartsev
  • M. S. Drutskaya
  • I. A. Mufazalov
  • V. P. Skulachev
  • S. A. NedospasovEmail author


Cytochrome c is an indispensable electron carrier in the mitochondrial respiratory chain and also an important mediator of the internal pathway triggering apoptosis. Mice with a complete deficiency of the Cycs gene encoding the somatic cytochrome c die during the embryogenesis. Using the technology of LoxP-cre-dependent tissue-specific recombination, we obtained some mouse strains with significantly reduced expression of cytochrome c in certain cell types (“conditional genetic knockdown”). This knockdown was achieved by abrogation of the normal splicing of the Cycs locus pre-mRNA due to an additional acceptor site inside the stop-cassette neor. Previously, we observed embryonic lethality in homozygous mice with the same knockdown of cytochrome c in all cells of the organism. In the present work we studied two novel mouse strains with conditional knockdown of the Cycs gene in T lymphocytes and macrophages. Somewhat surprisingly, the mice of these two strains under normal conditions were not phenotypically different from the wild-type mice, either on the whole organism level or on the level of activity of individual target cells. Thus, the amount of cytochrome c in lymphomyeloid cells does not affect their development and normal functioning.

Key words

cytochrome c genetic knockdown T lymphocytes macrophages cre recombinase splicing 


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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • E. S. Shilov
    • 1
    Email author
  • I. V. Kislyakov
    • 1
  • E. A. Gorshkova
    • 1
  • R. V. Zvartsev
    • 2
  • M. S. Drutskaya
    • 2
  • I. A. Mufazalov
    • 2
  • V. P. Skulachev
    • 2
  • S. A. Nedospasov
    • 3
    Email author
  1. 1.Biological FacultyLomonosov Moscow State UniversityMoscowRussia
  2. 2.Belozersky Institute of Physico-Chemical BiologyLomonosov Moscow State UniversityMoscowRussia
  3. 3.Engelhardt Institute of Molecular BiologyRussian Academy of SciencesMoscowRussia

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