Genetic Loss of miR-205 Causes Increased Mammary Gland Development

Alessandra Cataldo, Douglas G. Cheung, John P. Hagan, Matteo Fassan, Sukhinder Sandhu-Deol, Carlo M. Croce, Gianpiero Di Leva, Marilena V. Iorio

Research output: Contribution to journalArticlepeer-review

Abstract

MiRNAs play crucial roles in a broad spectrum of biological processes, both physiological and pathological. Different reports implicate miR-205 in the control of breast stem cell properties. Differential miR-205 expression has been observed in different stages of mammary gland development and maturation. However, a functional role in this process has not been clearly demonstrated. We generated an miR-205 knockout in the FVB/N mouse strain, which is viable and characterized by enhanced mammary gland development. Indeed, mammary glands of miR-205−/− female mice at different ages (1.5 and 5.5 months) show increased outgrowth and branching. This evidence is consistent with our previously reported data demonstrating the direct miR-205-mediated targeting of HER3, a master regulator of mammary gland development, and the oncosuppressive activity of this microRNA in different types of breast cancer.

Original languageEnglish
Article number4
JournalNon-coding RNA
Volume10
Issue number1
DOIs
StatePublished - Feb 2024

Keywords

  • breast cancer
  • mammary gland
  • microRNA

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