Eomes partners with PU.1 and MITF to Regulate Transcription Factors Critical for osteoclast differentiation

Academic Article


  • Bone-resorbing osteoclasts (OCs) are derived from myeloid precursors (MPs). Several transcription factors are implicated in OC differentiation and function; however, their hierarchical architecture and interplay are not well known. Analysis for enriched motifs in PU.1 and MITF chromatin immunoprecipitation coupled with high-throughput sequencing (ChIP-seq) data from differentiating OCs identified eomesodermin (EOMES) as a potential novel binding partner of PU.1 and MITF at genes critical for OC differentiation and function. We were able to demonstrate using co-immunoprecipitation and sequential ChIP analysis that PU.1, MITF, and EOMES are in the same complex and present as a complex at OC genomic loci. Furthermore, EOMES knockdown in MPs led to osteopetrosis associated with decreased OC differentiation and function both in vitro and in vivo. Although EOMES is associated with embryonic development and other hematopoietic lineages, this is the first study demonstrating the requirement of EOMES in the myeloid compartment. Biological Sciences; Cell Biology; Developmental Biology; Omics
  • Authors

    Published In

  • iScience  Journal
  • Digital Object Identifier (doi)

    Author List

  • Carey HA; Hildreth BE; Samuvel DJ; Thies KA; Rosol TJ; Toribio RE; Charles JF; Ostrowski MC; Sharma SM
  • Start Page

  • 238
  • End Page

  • 245
  • Volume

  • 11