Transient and Partial Nuclear Lamina Disruption Promotes Chromosome Movement in Early Meiotic Prophase

Dev Cell. 2018 Apr 23;45(2):212-225.e7. doi: 10.1016/j.devcel.2018.03.018.


Meiotic chromosome movement is important for the pairwise alignment of homologous chromosomes, which is required for correct chromosome segregation. Movement is driven by cytoplasmic forces, transmitted to chromosome ends by nuclear membrane-spanning proteins. In animal cells, lamins form a prominent scaffold at the nuclear periphery, yet the role lamins play in meiotic chromosome movement is unclear. We show that chromosome movement correlates with reduced lamin association with the nuclear rim, which requires lamin phosphorylation at sites analogous to those that open lamina network crosslinks in mitosis. Failure to remodel the lamina results in delayed meiotic entry, altered chromatin organization, unpaired or interlocked chromosomes, and slowed chromosome movement. The remodeling kinases are delivered to lamins via chromosome ends coupled to the nuclear envelope, potentially enabling crosstalk between the lamina and chromosomal events. Thus, opening the lamina network plays a role in modulating contacts between chromosomes and the nuclear periphery during meiosis.

Keywords: C. elegans; chromosome movement; chromosome pairing; lamin; meiosis; nuclear envelope.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Animals, Genetically Modified / genetics*
  • Animals, Genetically Modified / growth & development
  • Caenorhabditis elegans / genetics*
  • Caenorhabditis elegans / growth & development
  • Caenorhabditis elegans Proteins / genetics
  • Caenorhabditis elegans Proteins / metabolism*
  • Cell Nucleus / genetics
  • Cell Nucleus / pathology
  • Chromosome Pairing
  • Chromosome Segregation*
  • Chromosomes / genetics*
  • Cytoplasm
  • Gene Expression Regulation
  • Meiotic Prophase I / genetics*
  • Nuclear Envelope / genetics
  • Nuclear Envelope / pathology
  • Nuclear Lamina / genetics
  • Nuclear Lamina / pathology*
  • Phosphorylation


  • Caenorhabditis elegans Proteins