Comprehensive transcriptome and pathway analyses revealed central role for fascin in promoting triple-negative breast cancer progression

Rayanah Barnawi, Samiyah Al-Khaldi, Salma Majid, Amal Qattan, Tala Bakheet, Mohannad Fallatah, Hazem Ghebeh, Nehad M. Alajez*, Monther Al-Alwan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Recent years have witnessed major progress in development of novel therapeutic agents such as chemotherapy, targeted therapy and immune checkpoint inhibitors for breast cancer. However, cancer-related death remains high especially in triple-negative breast cancer (TNBC) due limited therapeutic options. Development of targeted therapies for TNBC requires better understanding of biology and signaling networks that promote disease progression. Fascin, an actin bundling protein, was identified as a key regulator of many signaling pathways that contribute to breast cancer progression. Herein, fascin ShRNA was used to generate stable fascin knockdown (FSCN1KD ) in the MDA-MB-231 TNBC cell line and then were subjected to comprehensive mRNA and miRNA transcriptome analysis. We identified 129 upregulated and 114 downregulated mRNA transcripts, while 14 miRNAs were differentially expressed in FSCN1KD . Ingenuity pathway analysis (IPA) was used to predict the impact of differentially expressed transcripts on signaling pathways and functional categories and to construct miRNA-mRNA regulatory networks in the context of FSCN1 knockdown. Compared to FSCN1KD, fascin-positive (FSCN1CON ) breast cancer cells showed enrichment in genes promoting cellular proliferation, migration, survival, DNA replication and repair. Expression of FSCN1high (identified in BRCA dataset from TCGA) in conjunction with elevated expression of the top 10 upregulated or decreased expression of the top 10 downregulated genes (identified in our FSCN1CON vs. FSCN1KD ) correlates with worst survival outcome. Taken together, these data confirmed fascin’s role in promoting TNBC progression, and identified a novel opportunity for therapeutic interventions via targeting those FSCN1-related transcripts.

Original languageEnglish
Article number1228
JournalPharmaceuticals
Volume14
Issue number12
DOIs
Publication statusPublished - Dec 2021

Keywords

  • Breast cancer
  • Fascin
  • IPA
  • MiRNA
  • Pathway analysis
  • Transcriptome

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