Cited by 89Hippo pathway signaling and YAP/TAZGene Regulatory Network AnalysisDevelopmental Biology and Gene Regulation

An Ectopic Network of Transcription Factors Regulated by Hippo Signaling Drives Growth and Invasion of a Malignant Tumor Model

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Atkins, Mardelle, Potier, Delphine, Romanelli, Lucia, Jacobs, Jelle, Mach, Jana, Hamaratoglu, Fisun, Aerts, Stein, Halder, Georg·2016·Current Biology

Abstract

Cancer cells have abnormal gene expression profiles; however, to what degree these are chaotic or driven by structured gene regulatory networks is often not known. Here we studied a model of Ras-driven invasive tumorigenesis in Drosophila epithelial tissues and combined in vivo genetics with next-generation sequencing and computational modeling to decipher the regulatory logic of tumor cells. Surprisingly, we discovered that the bulk of the tumor-specific gene expression is controlled by an ectopic network of a few transcription factors that are overexpressed and/or hyperactivated in tumor cells. These factors are Stat, AP-1, the bHLH proteins Myc and AP-4, the nuclear hormone receptor Ftz-f1, the nuclear receptor coactivator Taiman/SRC3, and Mef2. Notably, many of these transcription factors also are hyperactivated in human tumors. Bioinformatic analysis predicted that these factors directly regulate the majority of the tumor-specific gene expression, that they are interconnected by extensive cross-regulation, and that they show a high degree of co-regulation of target genes. Indeed, the factors of this network were required in multiple epithelia for tumor growth and invasiveness, and knockdown of several factors caused a reversion of the tumor-specific expression profile but had no observable effect on normal tissues. We further found that the Hippo pathway effector Yorkie was strongly activated in tumor cells and initiated cellular reprogramming by activating several transcription factors of this network. Thus, modeling regulatory networks identified an ectopic and ordered network of master regulators that control a large part of tumor cell-specific gene expression.

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Crossref · 10.1016/j.cub.2016.06.035

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  • Previously ectopic upregulation of a network of transcription factors (Upd, JAK-STAT, AP-1, Myc, Ftz, Ets, Irbp18, Xrp1, Slow border, and Vrille) promotes growth and invasiveness of RasV12,scrib- tumours.

    “Previously ectopic upregulation of a network of transcription factors e.g., Upd, JAK-STAT, AP-1, Myc, Ftz, Ets, Irbp18, Xrp1, Slow border, and Vrille were reported to promote the growth and invasiveness of the Ras V12 ,scrib -tumours (53-57).”

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Authors
Atkins, M., Potier, D., Romanelli, L., Jacobs, J., Mach, J., Hamaratoglu, F., Aerts, S., & Halder, G.
Affiliations
KU Leuven (BE)
Corresponding author
  • Aerts, Stein
  • Halder, Georg
Venue
Current Biology
Publisher
Elsevier BV
Published
2016-08
Volume
26
Issue
16
Pages
2101-2113
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2495853214
Cited by
88
References
50
Citations by year
2026: 1 · 2025: 6 · 2024: 6 · 2023: 6 · 2022: 11 · 2021: 15 · 2020: 10 · 2019: 6 · 2018: 15 · 2017: 12
FWCI
7.57
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
  • IRIS (submittedVersion)
  • Lirias (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
Funders
  • National Institutes of Health (P40OD018537)
  • National Institute of General Medical Sciences (R01GM084947)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hippo pathway signaling and YAP/TAZ
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
transcriptional regulatory networks, Hippo signaling pathway, Yorkie, tumor invasion, tumor growth, STAT, AP-1, c-Myc, AP-4, FTZ-F1, MEF2, gene regulatory networks, tumor-specific gene expression, cellular reprogramming, transcriptional co-regulation
MeSH terms
Animals, Drosophila melanogaster, Transcription Factors, Tumor Cells, Cultured, Signal Transduction, Gene Expression Regulation, Neoplastic, Drosophila Proteins, Gene Regulatory Networks, Carcinogenesis

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