@article{22621c3091dc4dbcba5e4e22fe9daec0,
title = "Parity associates with chromosomal damage in uterine leiomyomas",
abstract = "Mechanical forces in a constrained cellular environment were recently established as a facilitator of chromosomal damage. Whether this could contribute to tumorigenesis is not known. Uterine leiomyomas are common neoplasms that display relatively few chromosomal aberrations. We hypothesized that if mechanical forces contribute to chromosomal damage, signs of this could be seen in uterine leiomyomas from parous women. We examined the karyotypes of 1946 tumors, and found a striking overrepresentation of chromosomal damage associated with parity. We then subjected myometrial cells to physiological forces similar to those encountered during pregnancy, and found this to cause DNA breaks and a DNA repair response. While mechanical forces acting in constrained cellular environments may thus contribute to neoplastic degeneration, and genesis of uterine leiomyoma, further studies are needed to prove possible causality of the observed association. No evidence for progression to malignancy was found.",
author = "Heli Kuisma and Simona Bramante and Kristiina Rajam{\"a}ki and Sipil{\"a}, {Lauri J.} and Eevi Kaasinen and Jaana Kaukomaa and Kimmo Palin and Netta M{\"a}kinen and Jari Sj{\"o}berg and Nanna Sarvilinna and Jussi Taipale and Liisa Kauppi and Manuela Tumiati and Antti Hassinen and Janne Pitk{\"a}niemi and Jyrki Jalkanen and Sanna Heikkinen and Annukka Pasanen and Oskari Heikinheimo and Ralf B{\"u}tzow and Niko V{\"a}lim{\"a}ki and Aaltonen, {Lauri A.}",
note = "Funding Information: The study was supported by grants from the Academy of Finland (Finnish Center of Excellence No. 312041), European Research Council (ERC, 695727). N.M. received a grant from the Academy of Finland (295693) and Orion Research Foundation sr. L.K. is supported by the Academy of Finland (grant number 314394), the Sigrid Juselius Foundation and the Finnish Cancer Foundation. FIMM-HCA infrastructure is supported by Biocenter Finland. We acknowledge the computational resources provided by the ELIXIR node, hosted at the CSC-IT Center for Science Finland. We thank Prof. Eero Mervaala{\textquoteright}s laboratory for providing the cell stretching instrument and their expertize and guidance in using it. We are thankful to Sini Marttinen, Sirpa Soisalo, Marjo Rajalaakso, Inga-Lill {\AA}berg, Iina Vuoristo, Alison London, and Heikki Metsola for their technical assistance. Publisher Copyright: {\textcopyright} 2021, The Author(s).",
year = "2021",
doi = "10.1038/s41467-021-25806-x",
language = "English",
volume = "12",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",
}