Cited by 36Cancer, Hypoxia, and MetabolismTGF-β signaling in diseasesMetabolism, Diabetes, and Cancer

The TGF-β/HDAC7 axis suppresses TCA cycle metabolism in renal cancer

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Nam, Hyeyoung, Kundu, Anirban, Karki, Suman, Brinkley, Garrett J., Chandrashekar, Darshan S., Kirkman, Richard L., Liu, Juan, Liberti, Maria V. +4 more·2021·JCI Insight

Abstract

Mounting evidence points to alterations in mitochondrial metabolism in renal cell carcinoma (RCC). However, the mechanisms that regulate the TCA cycle in RCC remain uncharacterized. Here, we demonstrate that loss of TCA cycle enzyme expression is retained in RCC metastatic tissues. Moreover, proteomic analysis demonstrates that reduced TCA cycle enzyme expression is far more pronounced in RCC relative to other tumor types. Loss of TCA cycle enzyme expression is correlated with reduced expression of the transcription factor PGC-1α, which is also lost in RCC tissues. PGC-1α reexpression in RCC cells restores the expression of TCA cycle enzymes in vitro and in vivo and leads to enhanced glucose carbon incorporation into TCA cycle intermediates. Mechanistically, TGF-β signaling, in concert with histone deacetylase 7 (HDAC7), suppresses TCA cycle enzyme expression. Our studies show that pharmacologic inhibition of TGF-β restores the expression of TCA cycle enzymes and suppresses tumor growth in an orthotopic model of RCC. Taken together, this investigation reveals a potentially novel role for the TGF-β/HDAC7 axis in global suppression of TCA cycle enzymes in RCC and provides insight into the molecular basis of altered mitochondrial metabolism in this malignancy.

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  1. [35]Cancer Genome Atlas Research Network Comprehensive molecular characterization of clear cell renal cell carcinoma Nature 2013 499 7456 43 49 10.1038/nature12222 23792563 PMC3771322 · DOI · Paper page

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Authors
Nam, H., Kundu, A., Karki, S., Brinkley, G. J., Chandrashekar, D. S., Kirkman, R. L., Liu, J., Liberti, M. V., Locasale, J. W., Mitchell, T., Varambally, S., & Sudarshan, S.
Affiliations
  • Department of Urology and
  • University of Alabama at Birmingham (US)
  • Duke University (US)
Corresponding author
Sudarshan, Sunil
Venue
JCI Insight
Published
2021-11-22
Volume
6
Issue
22
ISSN
2379-3708 (ISSN-L)
OpenAlex
W3202716505
Cited by
36
References
50
Citations by year
2026: 6 · 2025: 10 · 2024: 10 · 2023: 6 · 2022: 4
FWCI
1.98
Type
journal article
Language
en
Open access
Locations
  • JCI Insight (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • U.S. Department of Veterans Affairs (BX002930)
  • NIH/NCI (R01CA20053, P30 CA013148)
  • Urology Care Foundation (669279)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
renal cell carcinoma, TGF-beta signaling, HDAC7, TCA cycle enzymes, mitochondrial metabolism, PGC-1α, glucose metabolism, TGF-beta inhibition, tumor growth, metastasis
MeSH terms
Animals, Citric Acid Cycle, Histone Deacetylases, Humans, Kidney Neoplasms, Transfection, Transforming Growth Factor beta, Gene Expression Profiling, Mice

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