The Secretome of Parental and Bone Metastatic Breast Cancer Elicits Distinct Effects in Human Osteoclast Activity after Activation of β2 Adrenergic Signaling

Research output: Contribution to journalJournal articleResearchpeer-review


  • Fulltext

    Final published version, 11.6 MB, PDF document

  • Francisco Conceição
  • Daniela M. Sousa
  • Sofia Tojal
  • Catarina Lourenço
  • Carina Carvalho-Maia
  • Helena Estevão-Pereira
  • João Lobo
  • Marina Couto
  • Rosenkilde, Mette
  • Carmen Jerónimo
  • Meriem Lamghari

The sympathetic nervous system (SNS), particularly through the β2 adrenergic receptor (β2-AR), has been linked with breast cancer (BC) and the development of metastatic BC, specifically in the bone. Nevertheless, the potential clinical benefits of exploiting β2-AR antagonists as a treatment for BC and bone loss-associated symptoms remain controversial. In this work, we show that, when compared to control individuals, the epinephrine levels in a cohort of BC patients are augmented in both earlier and late stages of the disease. Furthermore, through a combination of proteomic profiling and functional in vitro studies with human osteoclasts and osteoblasts, we demonstrate that paracrine signaling from parental BC under β2-AR activation causes a robust decrease in human osteoclast differentiation and resorption activity, which is rescued in the presence of human osteoblasts. Conversely, metastatic bone tropic BC does not display this anti-osteoclastogenic effect. In conclusion, the observed changes in the proteomic profile of BC cells under β-AR activation that take place after metastatic dissemination, together with clinical data on epinephrine levels in BC patients, provided new insights on the sympathetic control of breast cancer and its implications on osteoclastic bone resorption.

Original languageEnglish
Article number622
Issue number4
Number of pages25
Publication statusPublished - 2023

Bibliographical note

Publisher Copyright:
© 2023 by the authors.

    Research areas

  • beta-adrenergic, breast cancer, osteoclast, proteomic, sympathetic nervous system

ID: 347003081