A Differential Role of miRNAs in Regulation of Breast Cancer Stem Cells

  • Shreetama Bandyopadhayaya
  • Chandi C. Mandal


Breast cancer is one of the most frequently occurring cancers in women worldwide. Enormous evidences emphasized that tumorigenesis is steered by a subpopulation of tumor cells known as cancer stem cells (CSCs). These CSCs play a pivotal role in cancer cell growth and metastasis. They show resistance to therapies and are also responsible for tumor recurrence. Substantial studies revealed a crucial role of microRNAs (miRNAs) in modulation of tumorigenic potential. This chapter emphasizes mainly on those miRNAs which modulate the stemness property of breast cancer stem cells (BCSCs). miRNAs are a class small non-coding single-stranded RNAs (~20–24 nucleotides) which usually bind to 3′UTR of target mRNAs. This binding eventually inhibits protein synthesis by repressing translation and/or decaying the target mRNAs. This chapter elaborately discusses the various miRNAs (e.g., miR-200c, miR-34c, miR-214, miR-21, etc.) which not only act as either oncomirs or tumor suppressors but also regulate stemness property along with epithelial-mesenchymal transition, invasion, and metastasis. This study also enlightens the involvement of various crucial signalling pathways (e.g., Notch, Wnt, and PI3K-Akt) in miRNA-mediated regulation of BCSCs. Thus, expression profile of a specific miRNA or a set of specific miRNAs could be used as a diagnosis and/or prognosis marker for breast cancer. Moreover, targeting these specific miRNAs (e.g., miR-200c, miR-34c, miR-21, etc.) either by antagomir or mimic miRNA seems to be a promising therapeutic strategy for breast cancer treatment.


miRNA Breast cancer Breast cancer stem cells Stemness Therapeutics 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Shreetama Bandyopadhayaya
    • 1
  • Chandi C. Mandal
    • 1
  1. 1.Department of BiochemistryCentral University of RajasthanAjmerIndia

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