Cited by 133Cancer, Hypoxia, and MetabolismCancer-related molecular mechanisms researchMetabolism, Diabetes, and Cancer

LncRNA IDH1-AS1 links the functions of c-Myc and HIF1α via IDH1 to regulate the Warburg effect

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Xiang, Shaoxun, Gu, Hao, Jin, Lei, Thorne, Rick F., Zhang, Xu Dong, Wu, Mian·2018·Proceedings of the National Academy of Sciences

Abstract

The oncoprotein c-Myc plays an important role in regulating glycolysis under normoxia; yet, in cancer cells, HIF1α, which is essential for driving glycolysis under hypoxia, is often up-regulated even in the presence of oxygen. The relationship between these two major regulators of the Warburg effect remains to be fully defined. Here we demonstrate that regulation of a long noncoding RNA (lncRNA), named IDH1-AS1, enables c-Myc to collaborate with HIF1α in activating the Warburg effect under normoxia. c-Myc transcriptionally repressed IDH1-AS1, which, upon expression, promoted homodimerization of IDH1 and thus enhanced its enzymatic activity. This resulted in increased α-KG and decreased ROS production and subsequent HIF1α down-regulation, leading to attenuation of glycolysis. Hence, c-Myc repression of IDH1-AS1 promotes activation of the Warburg effect by HIF1α. As such, IDH1-AS1 overexpression inhibited cell proliferation, whereas silencing of IDH1-AS1 promoted cell proliferation and cancer xenograft growth. Restoring IDH1-AS1 expression may therefore represent a potential metabolic approach for cancer treatment.

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Crossref · 10.1073/pnas.1711257115

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  • The reviewed studies suggest involvement of Myc in the production of 2-HG.

    “The above studies suggest the involvement of Myc in the production of 2-HG.”

    From HIF-1-Independent Mechanisms Regulating Metabolic Adaptation in Hypoxic Cancer Cells (2021) · cites this paper as [175]

    The Results section reports that c-Myc regulates IDH1 activity, and the paper’s opening discussion of IDH metabolism states that specific IDH1 and IDH2 mutations convert α-KG into 2-HG (page numbers unavailable). These passages provide an indirect connection, but the paper does not show that Myc affects 2-HG production; it also reports in the Discussion that IDH1-AS1 does not bind the IDH1R132H mutant. (LLM, conf=0.81)

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Authors
Xiang, S., Gu, H., Jin, L., Thorne, R. F., Zhang, X. D., & Wu, M.
Affiliations
  • University of Science and Technology of China (CN)
  • Henan University (CN)
Corresponding author
  • Zhang, Xu Dong
  • Wu, Mian
Venue
Proceedings of the National Academy of Sciences
Published
2018-01-29
Volume
115
Issue
7
Pages
E1465-E1474
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2793701251
Cited by
129
References
71
Citations by year
2026: 6 · 2025: 16 · 2024: 15 · 2023: 16 · 2022: 15 · 2021: 19 · 2020: 25 · 2019: 11 · 2018: 6
FWCI
4.61
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (81430065, 31371388)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer-related molecular mechanisms research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
long non-coding RNA, c-Myc, HIF-1α, IDH1, Warburg effect, glycolysis, reactive oxygen species, hypoxia, cancer metabolism, cell proliferation
MeSH terms
Animals, Uterine Cervical Neoplasms, Female, Glycolysis, Humans, Isocitrate Dehydrogenase, Ketoglutaric Acids, Mice, Nude, Tumor Cells, Cultured, Transcriptional Activation, Proto-Oncogene Proteins c-myc, RNA, Antisense, Xenograft Model Antitumor Assays, Cell Proliferation, Mice, Hypoxia-Inducible Factor 1, alpha Subunit, RNA, Long Noncoding

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