Nature Communications (Aug 2021)

Exosomal miR-19a and IBSP cooperate to induce osteolytic bone metastasis of estrogen receptor-positive breast cancer

  • Kerui Wu,
  • Jiamei Feng,
  • Feng Lyu,
  • Fei Xing,
  • Sambad Sharma,
  • Yin Liu,
  • Shih-Ying Wu,
  • Dan Zhao,
  • Abhishek Tyagi,
  • Ravindra Pramod Deshpande,
  • Xinhong Pei,
  • Marco Gabril Ruiz,
  • Hiroyuki Takahashi,
  • Shunsuke Tsuzuki,
  • Takahiro Kimura,
  • Yin-yuan Mo,
  • Yusuke Shiozawa,
  • Ravi Singh,
  • Kounosuke Watabe

DOI
https://doi.org/10.1038/s41467-021-25473-y
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 18

Abstract

Read online

Bone metastasis is a major complication of breast cancer (BC) and ER+ tumors have a higher incidence of bone metastasis than ER− tumors. Here, the authors report that miR‐19a in exosomes and the bone matrix protein, IBSP, are upregulated and secreted by bone tropic ER+ BC cells, where they cooperatively induce osteoclastogenesis and promote bone colonization.