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Isolation and Propagation of Single Inclusion-Derived Chlamydia Using Laser Microdissection

  • Oleg V. Podgorny
  • Nadezhda F. Polina
  • Vassili N. Lazarev
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 2042)

Abstract

Other than its routine application for capturing pure cell populations from fixed tissue sections for diverse downstream molecular assays, laser microdissection enables isolation of single live cells. Here we describe a method for the isolation of single Chlamydia trachomatis-infected cells using a laser microdissection system, in which the dissected samples are captured via gravity. Cells infected by C. trachomatis at low multiplicity of infection are marked with the fluorescent Golgi-specific probe BODIPY® FL C5-ceramide, to facilitate identification of the cells with chlamydial inclusions under the microscope. Individual C. trachomatis-infected cells are harvested into separate wells with a pregrown host cell monolayer. Inclusions in harvested cells maturate, and the released elementary bodies infect the host cell monolayer, thus initiating propagation of single inclusion-derived Chlamydia. The method can be used for generation of microbiological clones of C. trachomatis and recovery of transformants and mutants. Isolated single Chlamydia-infected cells can also be examined by diverse downstream molecular assays to reveal unknown features of the Chlamydia replication at a single inclusion level.

Key words

Laser microdissection Chlamydia Elementary bodies BODIPY® FL C5-ceramide 

Notes

Acknowledgements

The development of a method for the isolation of single Chlamydia-infected cells using laser microdissection was supported by the Russian Science Foundation (projects no. 17-75-20099 and 14-14-00696). O.V.P was partially supported by the IDB RAS Government basic research program no. 0108-2019-0005. Laser microdissection was performed using equipment of the Core Facility of Koltzov Institute of Developmental Biology RAS.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Oleg V. Podgorny
    • 1
    • 2
  • Nadezhda F. Polina
    • 1
  • Vassili N. Lazarev
    • 1
    • 3
  1. 1.Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological AgencyMoscowRussia
  2. 2.Koltzov Institute of Developmental BiologyRussian Academy of SciencesMoscowRussia
  3. 3.Moscow Institute of Physics and TechnologyDolgoprudnyRussia

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