RUNX3 suppresses metastasis and stemness by inhibiting Hedgehog signaling in colorectal cancer

Bo Ram Kim, Yoo Jin Na, Jung Lim Kim, Yoon A. Jeong, Seong Hye Park, Min Jee Jo, Soyeon Jeong, Sanghee Kang, Sang Cheul Oh, Dae Hee Lee

Research output: Contribution to journalArticle

Abstract

Disabled tumor suppressor genes and hyperactive oncogenes greatly contribute to cell fates during cancer development because of their genetic alterations such as somatic mutations. However, little is known about how tumor suppressor genes react to diverse oncogenes during tumor progression. Our previous study showed that RUNX3 inhibits invasiveness by preventing vascular endothelial growth factor secretion and suppressed endothelial cell growth and tube formation in colorectal cancer (CRC). Hedgehog signaling is crucial for the physiological maintenance and self-renewal of stem cells, and its deregulation is responsible for their tumor development. The mechanisms that inhibit this pathway during proliferation remain poorly understood. Here, we found that the tumor suppressor RUNX3 modulates tumorigenesis in response to cancer cells induced by inhibiting oncogene GLI1 ubiquitination. Moreover, we demonstrated that RUNX3 and GLI1 expression were inversely correlated in CRC cells and tissues. We observed a direct interaction between RUNX3 and GLI1, promoting ubiquitination of GLI1 at the intracellular level. Increased ubiquitination of GLI1 was induced by the E3 ligase β-TrCP. This novel RUNX3-dependent regulatory loop may limit the extent and duration of Hedgehog signaling during extension of the tumor initiation capacity. On the basis of our results, identification of agents that induce RUNX3 may be useful for developing new and effective therapies for CRC.

Original languageEnglish
JournalCell Death and Differentiation
DOIs
Publication statusPublished - 2019 Jan 1

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Colorectal Neoplasms
Neoplasm Metastasis
Ubiquitination
Oncogenes
Neoplasms
Tumor Suppressor Genes
Ubiquitin-Protein Ligases
Vascular Endothelial Growth Factor A
Carcinogenesis
Endothelial Cells
Maintenance
Mutation
Growth
Therapeutics

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology

Cite this

RUNX3 suppresses metastasis and stemness by inhibiting Hedgehog signaling in colorectal cancer. / Kim, Bo Ram; Na, Yoo Jin; Kim, Jung Lim; Jeong, Yoon A.; Park, Seong Hye; Jo, Min Jee; Jeong, Soyeon; Kang, Sanghee; Oh, Sang Cheul; Lee, Dae Hee.

In: Cell Death and Differentiation, 01.01.2019.

Research output: Contribution to journalArticle

Kim, Bo Ram ; Na, Yoo Jin ; Kim, Jung Lim ; Jeong, Yoon A. ; Park, Seong Hye ; Jo, Min Jee ; Jeong, Soyeon ; Kang, Sanghee ; Oh, Sang Cheul ; Lee, Dae Hee. / RUNX3 suppresses metastasis and stemness by inhibiting Hedgehog signaling in colorectal cancer. In: Cell Death and Differentiation. 2019.
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