Preparation of lampbrush chromosomes dissected from avian and reptilian growing oocytes

  • Alsu Saifitdinova Chromas Research Resource Center, Saint Petersburg State University, Oranienbaumskoye sh. 2, 198504, Saint Petersburg, Russian Federation http://orcid.org/0000-0002-1221-479X
  • Svetlana Galkina Department of Genetics and Biotechnology, Saint Petersburg State University, Universitetskaya emb. 7–9, 199034, Saint Petersburg, Russian Federation http://orcid.org/0000-0002-7034-2466
  • Valeriia Volodkina Department of Cytology and Histology, Saint Petersburg State University, Universitetskaya emb. 7–9, 199034, Saint Petersburg, Russian Federation
  • Elena Gaginskaya Department of Cytology and Histology, Saint Petersburg State University, Universitetskaya emb. 7–9, 199034, Saint Petersburg, Russian Federation http://orcid.org/0000-0003-4967-9053

Abstract

Lampbrush chromosomes represent transcriptionally active chromosomes that exist during the extended diplotene phase in the growing ovarian eggs of many vertebrate animals, except therian mammals. They are excellent for studying chromosome structure and aspects of RNA transcription. Because of their giant size they allow a great increase in the resolution for physical gene mapping. Lampbrush chromosomes have no connection with the nuclear envelope, and can be manually dissected from living oocyte nuclei. Here we present the complete protocol for lampbrush chromosome microsurgical isolation from avian and reptilian germinal vesicles. These chromosome preparations can be further used for fluorescence in situ hybridization (FISH) and immunostaining.

Keywords

nucleus, germinal vesicle, lampbrush chromosomes, meiotic chromosomes, microsurgical isolation, Aves, Reptilia

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References

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Published
2017-12-29
How to Cite
SAIFITDINOVA, Alsu et al. Preparation of lampbrush chromosomes dissected from avian and reptilian growing oocytes. Biological Communications, [S.l.], v. 62, n. 3, p. 165–168, dec. 2017. ISSN 2587-5779. Available at: <https://biocomm.spbu.ru/article/view/441>. Date accessed: 25 feb. 2018. doi: https://doi.org/10.21638/11701/spbu03.2017.302.
Section
Jubilee section

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