The enedioic acid analogue 326E alleviates MASH in preclinical studies and its signatures in patients via dual targeting at ACLY and PPARα [RNA-Seq]
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE279675 | GEO | 2025/10/17
REPOSITORIES: GEO
Similar Datasets
Project description:The alarming rise in the prevalence of metabolic dysfunction-associated steatohepatitis (MASH) is attributed significantly to dysregulated lipid metabolism. The present study discovered that a novel enedioic acid ACLY inhibitor 326E, an investigational new drug in Phase 2a study for hypercholesterolemia, markedly reduces hepatic lipid accumulation and alleviates MASH in two different mouse models of MASH. Mechanistic studies demonstrated that 326E exerts these effects not only by inhibiting ATP-citrate lyase (ACLY) to reduce de novo lipogenesis but also as a PPARα agonist to increase hepatic fatty acid oxidation with promoted mitochondrial biogenesis. Subsequent studies in cynomolgus monkeys (Macaca fascicularis) confirmed the effectiveness of 326E for MASH in primate species. In a randomized Phase 1b/2a clinical trial in MASH patients 326E was well tolerated and demonstrated a therapeutic potential for MASH signatures. Our results reveal a promising therapeutic potential of 326E for MASH via distinctive dual mechanisms of inhibiting ACLY while activating PPARα.
2025-10-17 | GSE279673 | GEO
Project description:Immunosuppressive tumor microenvironments are common in cancers such as metabolic dysfunction-associated steatohepatitis (MASH)-driven hepatocellular carcinoma. To further investigate tumor–immune interactions, we performed spatial transcriptomics on livers from MASH-driven HCC mouse models (WD-DEN, WT or Acly KO mice and from WD-CCL4, Vehicle, or EVT0185 (100mg/kg) treated mice). GO enrichment analysis of spatially resolved tumor cells showed increased fatty acid and lipid metabolism in both Acly KO and EVT0185-treated mice Spatial analysis also revealed a selective increase in B cells, but not T cells, macrophages, or NKT cells, in tumors from Acly KO and EVT0185-treated mice.
2025-06-30 | GSE297081 | GEO
Project description:ATP citrate lyase (ACLY) synthesizes acetyl-CoA for de novo lipogenesis (DNL), which is elevated in non-alcoholic fatty liver disease. Hepatic ACLY is inhibited by the LDL-cholesterol lowering drug bempedoic acid (BPA), which has been shown to improve steatosis in mice. However, the acetyl-CoA synthetase ACSS2 can compensate for ACLY deficiency to support DNL, potentially complicating the targeting of ACLY. We show that hepatic loss of both ACLY and ACSS2 reduces DNL. Nevertheless, even when ACSS2 is suppressed by dietary or genetic means, we find that steatosis is counterintuitively exacerbated with hepatic ACLY deficiency in mice fed a Western diet (WD), linked to reduced expression of PPARa target genes controlling fatty acid oxidation. Conversely, BPA treatment increased fat catabolism and ameliorated WD-mediated lipid accumulation in both WT and liver ACLY knockout mice. Thus, hepatic ACLY plays an unexpected role in restraining diet-dependent lipid accumulation, and BPA improves steatosis independent of ACLY.
2024-08-01 | GSE247358 | GEO
Project description:De novo lipogenesis is activated in most cancers. Several lipogenic enzymes are implicated in oncogenesis and represent potential cancer therapeutic targets. RNA interference-mediated depletion of ATP citrate lyase (ACLY), the enzyme that catalyzes the first step of de novo lipogenesis, leads to growth suppression in a subset of human cancer cells. Here we demonstrate the molecular basis and potential biomarkers for ACLY-targeting therapy. First, suppression of cancer cell growth by ACLY depletion involves down-regulation of fatty acid elongase ELOVL6 at the transcriptional level. Lipid profiling revealed that ACLY depletion alters fatty acid composition in triglyceride; increased palmitate and decreased longer fatty acids, in accordance with ELOVL6 down-regulation. Second, ACLY depletion increases reactive oxygen species (ROS), whereas addition of antioxidant reduces ROS and attenuates the growth suppression. Third, ACLY depletion or ROS stimulation induce phosphorylation of AMP-activated protein kinase (AMPK), a sensor of energy and lipid metabolism. Analysis of various cancer cell lines revealed that the levels of AMPK phosphorylation (p-AMPK) correlate with the basal ROS levels, and that cancer cells with low basal p-AMPK (i.e., low basal ROS) levels are highly susceptible to ACLY depletion-mediated growth suppression. Finally, in clinical colon cancer tissues, p-AMPK levels are significantly decreased in aggressive tumors and correlate with the levels of 8-hydroxydeoxyguanosine, a hallmark of ROS stimulation. Together, these data suggest that ACLY inhibition suppresses cancer growth via palmitate-mediated lipotoxicity, and p-AMPK could be a predictive biomarker for its therapeutic outcome. Two cell lines are treated with ACLY siRNA. The samples include controls of each cell line.
2014-04-13 | E-GEOD-37243 | biostudies-arrayexpress
Project description:Immunosuppressive tumor microenvironments are common in cancers such as metabolic dysfunction-associated steatohepatitis (MASH)-driven hepatocellular carcinoma (HCC). While immune cell metabolism influences effector function, the impact of tumor metabolism on immunogenicity is less understood. ATP citrate lyase (ACLY), a key enzyme linking catabolic and anabolic processes, supports lipid metabolism and gene regulation. Although ACLY inhibition shows anti-proliferative effects in various tumors, clinical translation has been limited by challenges in inhibitor development and compensatory metabolic pathways. Using a mouse model of MASH-driven HCC that mirrors human disease, genetic inhibition of ACLY in hepatocytes and tumors reduced neoplastic lesions by over 70%. To evaluate the therapeutic potential of this pathway, a novel small-molecule ACLY inhibitor, EVT0185 (6-[4-(5-carboxy-5-methyl-hexyl)-phenyl]-2,2-dimethylhexanoic acid), was identified via phenotypic screening. EVT0185 is converted to a CoA thioester in the liver by SLC27A2 with cryo-EM structural analysis revealing EVT0185-CoA directly interacts with ACLY’s CoA binding site. Oral delivery of EVT0185 in four mouse models of MASH-HCC dramatically reduces tumor burden as monotherapy and enhances efficacy of current standards of care including tyrosine kinase inhibitors and immunotherapies. Transcriptomic and spatial profiling in mice and humans linked reduced tumor ACLY with increases in CXCL13, tumor infiltrating B-cells and tertiary lymphoid structures. Remarkably, the depletion of B cells blocked the anti-tumor effects of ACLY depletion. Together, these findings illustrate how targeting tumor metabolism can rewire immune function and suppress cancer progression in MASH-HCC.
2025-09-17 | GSE296668 | GEO
Project description:Immunosuppressive tumor microenvironments are common in cancers such as metabolic dysfunction-associated steatohepatitis (MASH)-driven hepatocellular carcinoma (HCC). While immune cell metabolism influences effector function, the impact of tumor metabolism on immunogenicity is less understood. ATP citrate lyase (ACLY), a key enzyme linking catabolic and anabolic processes, supports lipid metabolism and gene regulation. Although ACLY inhibition shows anti-proliferative effects in various tumors, clinical translation has been limited by challenges in inhibitor development and compensatory metabolic pathways. Using a mouse model of MASH-driven HCC that mirrors human disease, genetic inhibition of ACLY in hepatocytes and tumors reduced neoplastic lesions by over 70%. To evaluate the therapeutic potential of this pathway, a novel small-molecule ACLY inhibitor, EVT0185 (6-[4-(5-carboxy-5-methyl-hexyl)-phenyl]-2,2-dimethylhexanoic acid), was identified via phenotypic screening. EVT0185 is converted to a CoA thioester in the liver by SLC27A2 with cryo-EM structural analysis revealing EVT0185-CoA directly interacts with ACLY’s CoA binding site. Oral delivery of EVT0185 in four mouse models of MASH-HCC dramatically reduces tumor burden as monotherapy and enhances efficacy of current standards of care including tyrosine kinase inhibitors and immunotherapies. Transcriptomic and spatial profiling in mice and humans linked reduced tumor ACLY with increases in CXCL13, tumor infiltrating B-cells and tertiary lymphoid structures. Remarkably, the depletion of B cells blocked the anti-tumor effects of ACLY depletion. Together, these findings illustrate how targeting tumor metabolism can rewire immune function and suppress cancer progression in MASH-HCC.
2025-09-17 | GSE297190 | GEO
Project description:De novo lipogenesis is activated in most cancers. Several lipogenic enzymes are implicated in oncogenesis and represent potential cancer therapeutic targets. RNA interference-mediated depletion of ATP citrate lyase (ACLY), the enzyme that catalyzes the first step of de novo lipogenesis, leads to growth suppression in a subset of human cancer cells. Here we demonstrate the molecular basis and potential biomarkers for ACLY-targeting therapy. First, suppression of cancer cell growth by ACLY depletion involves down-regulation of fatty acid elongase ELOVL6 at the transcriptional level. Lipid profiling revealed that ACLY depletion alters fatty acid composition in triglyceride; increased palmitate and decreased longer fatty acids, in accordance with ELOVL6 down-regulation. Second, ACLY depletion increases reactive oxygen species (ROS), whereas addition of antioxidant reduces ROS and attenuates the growth suppression. Third, ACLY depletion or ROS stimulation induce phosphorylation of AMP-activated protein kinase (AMPK), a sensor of energy and lipid metabolism. Analysis of various cancer cell lines revealed that the levels of AMPK phosphorylation (p-AMPK) correlate with the basal ROS levels, and that cancer cells with low basal p-AMPK (i.e., low basal ROS) levels are highly susceptible to ACLY depletion-mediated growth suppression. Finally, in clinical colon cancer tissues, p-AMPK levels are significantly decreased in aggressive tumors and correlate with the levels of 8-hydroxydeoxyguanosine, a hallmark of ROS stimulation. Together, these data suggest that ACLY inhibition suppresses cancer growth via palmitate-mediated lipotoxicity, and p-AMPK could be a predictive biomarker for its therapeutic outcome.
2014-04-13 | GSE37243 | GEO
Project description:Metabolic dysfunction-associated steatohepatitis (MASH) is on the rise, and with limited pharmacological therapy available, identification of new metabolic targets is urgently needed. Oxalate is a terminal metabolite produced from glyoxylate by lactate dehydrogenase (LDHA). The liver-specific alanine-glyoxylate aminotransferase (AGXT) detoxifies glyoxylate, preventing oxalate accumulation. We report that AGXT is suppressed and LDHA is activated in livers from patients and mice with MASH, leading to oxalate overproduction. In turn, oxalate promotes steatosis in hepatocytes by inhibiting peroxisome proliferator activated receptor-alpha (PPARα) transcription and fatty acid β-oxidation (FAO), and induces monocyte chemotaxis via C-C motif chemokine ligand 2. In male mice with diet-induced MASH, blocking oxalate overproduction through hepatocyte-specific AGXT overexpression or pharmacological inhibition of LDHA potently lower steatosis, inflammation, and fibrosis by inducing PPARα-driven FAO, and suppressing monocyte chemotaxis, nuclear factor-kappaB and transforming growth factor-beta targets. These findings highlight hepatic oxalate overproduction as a new target for the treatment of MASH.
2024-08-07 | GSE265985 | GEO
Project description:Hepatic ACLY deficiency and bempedoic acid drive divergent responses to dietary lipid
| PRJNA1037152 | ENA
Project description:In order to propagate a solid tumor, cancer cells must adapt to and survive under various tumor microenvironment (TME) stresses, such as hypoxia or lactic acidosis. To systematically identify genes that modulate cancer cell survival under stresses, we performed genome-wide shRNA screens under hypoxia or lactic acidosis. We discovered that genetic depletion of acetyl-CoA carboxylase (ACACA or ACC1) or ATP citrate lyase (ACLY) protected cancer cells from hypoxia-induced apoptosis. Additionally, loss of ACLY or ACC1 reduced levels and activities of the oncogenic transcription factor ETV4. Silencing ETV4 also protected cells from hypoxia-induced apoptosis and led to remarkably similar transcriptional responses as with silenced ACLY or ACC1, including an anti-apoptotic program. Metabolomic analysis found that while α-ketoglutarate levels decrease under hypoxia in control cells, α-ketoglutarate is paradoxically increased by hypoxia when ACC1 or ACLY are depleted. Supplementation with α-ketoglutarate rescued the hypoxia-induced apoptosis and recapitulated the decreased expression and activity of ETV4 via an epigenetic mechanism. Therefore, ACC1 and ACLY regulate the levels of ETV4 under hypoxia via increased α-ketoglutarate. These results reveal that ACC1/ACLY- α-ketoglutarate-ETV4 is a novel means by which metabolic states regulate transcriptional output for life vs. death decisions under hypoxia. Since many lipogenic inhibitors are under investigation as cancer therapeutics, our findings suggest that the use of these inhibitors will need to be carefully considered with respect to oncogenic drivers, tumor hypoxia, progression and dormancy. More broadly, our screen provides a framework for studying additional tumor cell stress-adaption mechanisms in the future. DESIGN: H1975 lung cancer cells transduced with a scramble shRNA hairpin or two different shRNAs against ACLY, ACC1, or ETV4 under hypoxia.
2015-12-10 | E-GEOD-61286 | biostudies-arrayexpress