ArticleNon-coding RNA research2025
Palmitic acid reduces LDLR-dependent uptake of macrophage-derived extracellular vesicles by hepatoma cells.
Article in Non-coding RNA research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Unifying and unique roles of non-coding RNA biomarkers in liver and heart fibrosis.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2026Review
- Physiologically relevant media are associated with overlapping metabolic responses in primary human hepatocytes and Huh7 cells.Physiological reports · 2026Article
- Interferon Regulatory Factors in Alcohol-Associated Liver Disease: Cell-Type Programs, Danger Signaling, and Therapeutic Opportunities.Current issues in molecular biology · 2026Review
- Extracellular Vesicles: Orchestrators of Intrahepatic and Systemic Crosstalk in Metabolic Dysfunction-Associated Steatotic Liver Disease.Pharmaceutics · 2026Review
- Immune System and Hepatic Stellate Cells' Crosstalk in Liver Fibrosis: Pathways and Therapeutic Potential.Journal of immunology research · 2026Review
- Extracellular vesicles in metabolic dysfunction-associated steatotic liver disease: From intercellular signaling to clinical translation.World journal of hepatology · 2025Review
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Authors and funding
6 authors.
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Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by a complicated interaction of lipotoxicity and inflammation in the liver, yet the mechanisms linking these phenomena remain incompletely understood. In this study, we investigated the mechanistic uptake of extracellular vesicles (EVs) derived from macrophages into palmitic acid (PA)-induced lipotoxic hepatoma cells. By co-culturing macrophages with lipotoxic Huh7 cells in a transwell system, we demonstrated that PA-treated Huh7 cells exhibited impaired uptake of macrophage-derived EVs. Compared with control Huh7 cells, PA-treated Huh7 cells presented a reduction in the expression of macrophage-derived microRNA-223 (miR-223) after co-culture, accompanied by an increase in the expression of miR-223 target genes. Further analysis revealed that upon PA treatment, the expression of low-density lipoprotein receptor (LDLR) in Huh7 cells and EV uptake activity were simultaneously diminished. Gain- and loss-of-function experiments of LDLR in Huh7 cells revealed a crucial role of LDLR in facilitating EV uptake. Mechanistically, we elucidated that PA induced endoplasmic reticulum stress and subsequently stimulated proprotein convertase subtilisin/kexin type 9 (PCSK9)-mediated LDLR degradation. Administration of a PCSK9 inhibitor rescued LDLR levels and increased EV uptake in PA-treated Huh7 cells from macrophages. Moreover, we found that the uptake of macrophage-derived EVs lacking apolipoprotein E (ApoE) by Huh7 cells was lower than that of control EVs, highlighting the role of ApoE as a facilitator of EV transfer from macrophages into Huh7 cells. Overall, our study highlights the intricate mechanisms underlying EV-mediated communication between macrophages and Huh7 cells during lipotoxicity and provides insight into the development of EV-based therapies for MASLD.
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