Increased chromatin plasticity supports enhanced metastatic potential of mouse melanoma cells

Yael Maizels, Adi Elbaz, Rosari Hernandez-Vicens, Oshrat Sandrusy, Anna Rosenberg, Gabi Gerlitz

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Metastasis formation is strongly dependent on the migration capabilities of tumor cells. Recently it has become apparent that nuclear structure and morphology affect the cellular ability to migrate. Previously we found that migration of melanoma cells is both associated with and dependent on global chromatin condensation. Therefore, we anticipated that tumor progression would be associated with increased chromatin condensation. Interestingly, the opposite has been reported for melanoma. In trying to resolve this contradiction, we show that during growth conditions, tumor progression is associated with global chromatin de-condensation that is beneficial for faster proliferation. However, upon induction of migration, in both low- and high-metastatic mouse melanoma cells chromatin undergoes condensation to support cell migration. Our results reveal that throughout tumor progression induction of chromatin condensation by migration signals is maintained, whereas the organization of chromatin during growth conditions is altered. Thus, tumor progression is associated with an increase in chromatin dynamics.

Original languageEnglish
Pages (from-to)282-290
Number of pages9
JournalExperimental Cell Research
Volume357
Issue number2
DOIs
StatePublished - 15 Aug 2017

Keywords

  • Cell migration
  • Chromatin
  • Heterochromatin
  • Histone modifications
  • Melanoma

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