Lamin A-mediated nuclear lamina integrity is required for proper ciliogenesis

Jia Rong Fan, Li Ru You, Won Jing Wang, Wei Syun Huang, Ching Tung Chu, Ya Hui Chi, Hong Chen Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The primary cilium is a sensory organelle that receives specific signals from the extracellular environment important for vertebrate development and tissue homeostasis. Lamins, the major components of the nuclear lamina, are required to maintain the nuclear structure and are involved in most nuclear activities. In this study, we show that deficiency in lamin A/C causes defective ciliogenesis, accompanied by increased cytoplasmic accumulation of actin monomers and increased formation of actin filaments. Disruption of actin filaments by cytochalasin D rescues the defective ciliogenesis in lamin A/C-depleted cells. Moreover, lamin A/C-deficient cells display lower levels of nesprin 2 and defects in recruiting Arp2, myosin Va, and tau tubulin kinase 2 to the basal body during ciliogenesis. Collectively, our results uncover a functional link between nuclear lamina integrity and ciliogenesis and implicate the malfunction of primary cilia in the pathogenesis of laminopathy.

Original languageEnglish
Article numbere49680
JournalEMBO Reports
Volume21
Issue number10
DOIs
StatePublished - 5 Oct 2020

Keywords

  • cilia
  • ciliogenesis
  • ciliopathy
  • lamin
  • laminopathy

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