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Alteration of STR profiles in ovarian carcinoma cells during primary culture

  • Gynecologic Oncology
  • Published:
Archives of Gynecology and Obstetrics Aims and scope Submit manuscript

Abstract

Purpose

Cell authentication is a necessary procedure to avoid scientific data from cell culture experiments with cross-contamination or false classification. A genetic fingerprint pattern of a specimen by short tandem repeats (STR) is self-evident. Due to high amount of chromosomal rearrangements, known in epithelia ovary cancer cells and the instable STR pattern described in other tumour entities like leukaemia, this study explores the suitability of STR profiling for primary cultured epithelial ovary cancer cells.

Methods

STR profiles of epithelial ovary cancers of 16 patients were compared with corresponding blood and corresponding primary cell cultures. The primary cell cultures of epithelial ovary tumours were passaged up to 28 times. In between, cultures were cryo conserved and recultured again, two to five times per patient.

Results

In two cases, the STR pattern of tumour lost alleles (1/16 and 3/16) in comparison of corresponding STR-pattern from blood. In comparison to blood, cell culture of a third case, lost four alleles (4/16) accompanied with morphologic changes after 14th passage. It is equal after cryo conservation of the seventh passage from the same patient. The only changes in STR profiles we recognized are losses of alleles. Remaining STR markers allow authentication.

Conclusions

Very likely, the allelic drop-outs beyond passage 14 assume complex genetic losses of heterozygosis resulting in changed growth behaviour of cells. All other STR-profiles of remaining 15 patients analysed in this study are stable over all passages and freeze–thaw processes. Thus, ovary cancer cell cultures in research should be authenticated by STR-profile in general.

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Authors and Affiliations

  1. School of Medicine, Women’s Hospital, Zhejiang University, 1 Xueshi Road, Hangzhou, China

    Xiufeng Huang

  2. Clinic of Gynecology and Obstetrics, University Hospital Schleswig-Holstein, Arnold-Heller-Straße 3 (Haus 24), 24105, Kiel, Germany

    Xiufeng Huang, Jörg Weimer, Regina Fredrik, Norbert Arnold & Christian Schem

  3. Institute of Legal Medicine, University Hospital Schleswig-Holstein, Arnold-Heller-Straße 3 (Haus 28), 24105, Kiel, Germany

    Nicole von Wurmb-Schwark

Authors
  1. Xiufeng Huang
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  2. Jörg Weimer
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  3. Nicole von Wurmb-Schwark
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  4. Regina Fredrik
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  5. Norbert Arnold
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  6. Christian Schem
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Corresponding author

Correspondence to Jörg Weimer.

Ethics declarations

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards (B372/10 Kiel 2011). Informed consent was obtained from all individual participants included in the study.

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

X. Huang and J. Weimer are both first author.

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Huang, X., Weimer, J., von Wurmb-Schwark, N. et al. Alteration of STR profiles in ovarian carcinoma cells during primary culture. Arch Gynecol Obstet 294, 369–376 (2016). https://doi.org/10.1007/s00404-016-4018-9

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  • DOI: https://doi.org/10.1007/s00404-016-4018-9

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