A KLF6-driven transcriptional network links lipid homeostasis and tumour growth in renal carcinoma

Transcriptional networks are critical for the establishment of tissue-specific cellular states in health and disease, including cancer. Yet, the transcriptional circuits that control carcinogenesis remain poorly understood. Here we report that Kruppel like factor 6 (KLF6), a transcription factor of the zinc finger family, regulates lipid homeostasis in clear cell renal cell carcinoma (ccRCC). We show that KLF6 supports the expression of lipid metabolism genes and promotes the expression of PDGFB, which activates mTOR signalling and the downstream lipid metabolism regulators SREBF1 and SREBF2. KLF6 expression is driven by a robust super enhancer that integrates signals from multiple pathways, including the ccRCC-initiating VHL-HIF2A pathway. These results suggest an underlying mechanism for high mTOR activity in ccRCC cells. More generally, the link between super enhancer-driven transcriptional networks and essential metabolic pathways may provide clues to the mechanisms that maintain the stability of cell identity-defining transcriptional programmes in cancer.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

Nature communications - 10(2019), 1 vom: 11. März, Seite 1152

Sprache:

Englisch

Beteiligte Personen:

Syafruddin, Saiful E [VerfasserIn]
Rodrigues, Paulo [VerfasserIn]
Vojtasova, Erika [VerfasserIn]
Patel, Saroor A [VerfasserIn]
Zaini, M Nazhif [VerfasserIn]
Burge, Johanna [VerfasserIn]
Warren, Anne Y [VerfasserIn]
Stewart, Grant D [VerfasserIn]
Eisen, Tim [VerfasserIn]
Bihary, Dóra [VerfasserIn]
Samarajiwa, Shamith A [VerfasserIn]
Vanharanta, Sakari [VerfasserIn]

Links:

Volltext

Themen:

EC 2.7.1.1
EC 2.7.11.1
Journal Article
KLF6 protein, human
Kruppel-Like Factor 6
MTOR protein, human
Proto-Oncogene Proteins c-sis
Research Support, Non-U.S. Gov't
SREBF1 protein, human
SREBF2 protein, human
Sterol Regulatory Element Binding Protein 1
Sterol Regulatory Element Binding Protein 2
TOR Serine-Threonine Kinases

Anmerkungen:

Date Completed 05.04.2019

Date Revised 04.12.2021

published: Electronic

Citation Status MEDLINE

doi:

10.1038/s41467-019-09116-x

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM294818812