Cited by 32Peroxisome Proliferator-Activated ReceptorsComputational Drug Discovery MethodsReceptor Mechanisms and Signaling

Functional and Structural Insights into Human PPARα/δ/γ Subtype Selectivity of Bezafibrate, Fenofibric Acid, and Pemafibrate

Open access
Honda, Akihiro, Kamata, Shotaro, Akahane, Makoto, Machida, Yui, Uchii, Kie, Shiiyama, Yui, Habu, Yuki, Miyawaki, Saeka +3 more·2022·International Journal of Molecular Sciences

Abstract

Among the agonists against three peroxisome proliferator-activated receptor (PPAR) subtypes, those against PPARα (fibrates) and PPARγ (glitazones) are currently used to treat dyslipidemia and type 2 diabetes, respectively, whereas PPARδ agonists are expected to be the next-generation metabolic disease drug. In addition, some dual/pan PPAR agonists are currently being investigated via clinical trials as one of the first curative drugs against nonalcoholic fatty liver disease (NAFLD). Because PPARα/δ/γ share considerable amino acid identity and three-dimensional structures, especially in ligand-binding domains (LBDs), clinically approved fibrates, such as bezafibrate, fenofibric acid, and pemafibrate, could also act on PPARδ/γ when used as anti-NAFLD drugs. Therefore, this study examined their PPARα/δ/γ selectivity using three independent assays—a dual luciferase-based GAL4 transactivation assay for COS-7 cells, time-resolved fluorescence resonance energy transfer-based coactivator recruitment assay, and circular dichroism spectroscopy-based thermostability assay. Although the efficacy and efficiency highly varied between agonists, assay types, and PPAR subtypes, the three fibrates, except fenofibric acid that did not affect PPARδ-mediated transactivation and coactivator recruitment, activated all PPAR subtypes in those assays. Furthermore, we aimed to obtain cocrystal structures of PPARδ/γ-LBD and the three fibrates via X-ray diffraction and versatile crystallization methods, which we recently used to obtain 34 structures of PPARα-LBD cocrystallized with 17 ligands, including the fibrates. We herein reveal five novel high-resolution structures of PPARδ/γ–bezafibrate, PPARγ–fenofibric acid, and PPARδ/γ–pemafibrate, thereby providing the molecular basis for their application beyond dyslipidemia treatment.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3390/ijms23094726

Cites

45 of 45 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Fenofibrate is a selective PPAR-α agonist, whereas bezafibrate acts as a pan-PPAR agonist (α, δ, γ), which may account for broader biochemical and symptomatic benefits observed with bezafibrate.

    “The difference may relate to pharmacologic profiles: fenofibrate is a selective PPAR-α agonist, whereas bezafibrate acts as a pan-PPAR agonist (α, δ, γ), which may account for broader biochemical and symptomatic benefits observed with bezafibrate [41].”

    From Second-Line Therapies in Primary Biliary Cholangitis: A Comparative Review of Obeticholic Acid, Fibrates, Seladelpar, and Elafibranor (2025) · cites this paper as [41]

    The Discussion (page unavailable) describes bezafibrate as a pan-PPAR agonist and says fenofibric acid, fenofibrate’s active metabolite, is recognized as PPARα-selective in clinical settings. It also finds that fenofibric acid activates PPARγ in vitro, calling it a PPARα/γ dual agonist. The Discussion suggests bezafibrate’s multiple PPAR actions may contribute to improved biochemical measures, but it does not establish broader symptomatic benefits or a clinical benefit comparison with fenofibrate. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. [12]CymaBay Therapeutics Halts Clinical Development of Seladelpar. CymaBay Therapeutics Press Release (25 November 2019) Available online: https://ir.cymabay.com/press-releases/detail/476/cymabay-therapeutics-halts-clinical-development-of-seladelpar (accessed on 21 April 2022)
  2. [14]FDA Lifts All Clinical Holds on Seladelpar. CymaBay Therapeutics Press Release (23 July 2020) Available online: https://ir.cymabay.com/press-releases/detail/485/fda-lifts-all-clinical-holds-on-seladelpar (accessed on 21 April 2022)
  3. [18]GENFIT: Announces Results from Interim Analysis of RESOLVE-IT Phase 3 Trial of Elafibranor in Adults with NASH and Fibrosis. GENFIT Press Release (11 May 2020) Available online: https://ir.genfit.com/news-releases/news-release-details/genfit-announces-results-interim-analysis-resolve-it-phase-3/ (accessed on 21 April 2022)

Cited by

Sorted by citations

Authors
Honda, A., Kamata, S., Akahane, M., Machida, Y., Uchii, K., Shiiyama, Y., Habu, Y., Miyawaki, S., Kaneko, C., Oyama, T., & Ishii, I.
Affiliations
  • Showa Pharmaceutical University (JP)
  • University of Yamanashi (JP)
Corresponding author
Ishii, Isao
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2022-04-25
Volume
23
Issue
9
Pages
4726
ISSN
1422-0067 (ISSN-L)
OpenAlex
W4224663364
Cited by
32
References
45
Citations by year
2026: 7 · 2025: 10 · 2024: 5 · 2023: 6 · 2022: 4
FWCI
2.04
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Japan Agency for Medical Research and Development (JP19am0101071)
  • Ministry of Education, Culture, Sports, Science and Technology (19K16359)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
Keywords
PPARα, PPARδ, PPARγ, bezafibrate, fenofibric acid, pemafibrate, fibrates, ligand-binding domain, non-alcoholic fatty liver disease, dual PPAR agonists, coactivator recruitment, transcriptional activation, thermal stability
MeSH terms
Benzoxazoles, Bezafibrate, Butyrates, Diabetes Mellitus, Type 2, Humans, Ligands, Fenofibrate, PPAR alpha, PPAR delta, PPAR gamma, Dyslipidemias, Non-alcoholic Fatty Liver Disease

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review