Cited by 123Renal Diseases and GlomerulopathiesChronic Kidney Disease and DiabetesPI3K/AKT/mTOR signaling in cancer

Fatty acids are novel nutrient factors to regulate mTORC1 lysosomal localization and apoptosis in podocytes

Open access
Yasuda, Mako, Tanaka, Yuki, Kume, Shinji, Morita, Yoshikata, Chin-Kanasaki, Masami, Araki, Hisazumi, Isshiki, Keiji, Araki, Shin-ichi +5 more·2014·Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease

Abstract

Podocyte apoptosis is a potent mechanism of proteinuria in diabetic nephropathy. More detailed mechanistic insight into podocyte apoptosis is needed to better understand the pathogenesis of diabetic nephropathy. An elevated level of serum free fatty acid (FFA), as well as hyperglycemia, is a clinical characteristic in diabetes, although its causal role in podocyte apoptosis remains unclear. This study examined the effect of three types of FFAs, saturated, monounsaturated and polyunsaturated FFAs, on podocyte apoptosis. Palmitate, a saturated FFA, induced endoplasmic reticulum (ER) stress-dependent apoptosis in podocytes. Oleate, a monounsaturated FFA, and eicosapentaenoic acid (EPA), an ω-3 polyunsaturated FFA did not induce apoptosis; rather, they antagonized palmitate-induced apoptosis. Palmitate activated mammalian target of rapamycin (mTOR) complex 1 (mTORC1), a nutrient-sensing kinase regulating a wide range of cell biology. Furthermore, inhibition of mTORC1 activity by rapamycin or siRNA for Raptor, a component of mTORC1, ameliorated palmitate-induced ER stress and apoptosis in podocytes. Activity of mTORC1 is regulated by upstream kinases and Rag/Ragulator-dependent recruitment of mTOR onto lysosomal membranes. Palmitate activated mTORC1 by enhancing recruitment of mTOR onto lysosomal membranes, which was inhibited by co-incubation with oleate or EPA. Inhibition of mTOR translocation onto lysosomes by transfection with dominant-negative forms of Rag ameliorated palmitate-induced apoptosis. This study suggests that saturated and unsaturated FFAs have opposite effects on podocyte apoptosis by regulating mTORC1 activity via its translocation onto lysosomal membranes, and the results provide a better understanding of the pathogenesis in diabetic nephropathy and a novel role of mTORC1 in cell apoptosis.

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 · 10.1016/j.bbadis.2014.04.001

Cites

57 of 57 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?

  • Dietary palmitic acid activates both the NLRP3 inflammasome and mTORC1.

    “and activates both the NLRP3 inflammasome and mTORC116,17”

    From Sebaceous-immunobiology is orchestrated by sebum lipids (2017) · cites this paper as [16]

    Section 3.2 reports that palmitate activated mTORC1 signaling in cultured podocytes, and Section 3.4 links this to mTOR translocation onto lysosomal membranes (page numbers unavailable). The cited paper does not establish that dietary palmitic acid activates mTORC1, and the passages do not address NLRP3 inflammasome activation. (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

Cited by

Sorted by citations

Authors
Yasuda, M., Tanaka, Y., Kume, S., Morita, Y., Chin-Kanasaki, M., Araki, H., Isshiki, K., Araki, S.-I., Koya, D., Haneda, M., Kashiwagi, A., Maegawa, H., & Uzu, T.
Affiliations
  • Shiga University of Medical Science (JP)
  • Kanazawa Medical University (JP)
  • Asahikawa Medical University (JP)
Corresponding author
Kume, Shinji
Venue
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease
Publisher
Elsevier BV
Published
2014-07
Volume
1842
Issue
7
Pages
1097-1108
ISSN
0925-4439 (ISSN-L)
OpenAlex
W2033453768
Cited by
123
References
57
Citations by year
2026: 3 · 2025: 7 · 2024: 7 · 2023: 4 · 2022: 9 · 2021: 20 · 2020: 16 · 2019: 14 · 2018: 9 · 2017: 10 · 2016: 10 · 2015: 9 · 2014: 5
FWCI
8.97
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Uehara Memorial Foundation
  • Japan Society for the Promotion of Science (25713033, 24890089)
Topics
  • Health Sciences › Medicine › Nephrology › Renal Diseases and Glomerulopathies
  • Health Sciences › Medicine › Nephrology › Chronic Kidney Disease and Diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
podocyte apoptosis, mTORC1, free fatty acids, palmitate, oleate, eicosapentaenoic acid, endoplasmic reticulum stress, lysosomal translocation, raptors, diabetic nephropathy, proteinuria, saturated fatty acids, omega-3 fatty acids
MeSH terms
Mechanistic Target of Rapamycin Complex 1, Animals, Cell Line, Diabetic Nephropathies, Fatty Acids, Food, Humans, Lysosomes, Palmitates, Eicosapentaenoic Acid, Apoptosis, Oleic Acid, Multiprotein Complexes, Podocytes, Mice, HEK293 Cells, TOR Serine-Threonine Kinases, Endoplasmic Reticulum Stress

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