| 2011 |
CPT1A exists in the liver mitochondrial outer membrane as part of a large protein complex containing long-chain acyl-CoA synthetase (ACSL) and voltage-dependent anion channel (VDAC), identified by blue native electrophoresis, immunoblotting, mass spectrometry, and reciprocal immunoprecipitation. This complex is proposed to transfer activated fatty acids through the outer mitochondrial membrane. |
Blue native PAGE, immunoblotting, mass spectrometry, co-immunoprecipitation with antisera against each protein |
The Journal of biological chemistry |
High |
21622568
|
| 2010 |
PPARα activates CPT1A transcription through a binding site in the second intron of the rat CPT1A gene, while PGC-1α activates CPT1A through a separate element in the first intron; these two regulators act via independent gene elements and do not cooperate through each other's binding sites. |
Luciferase reporter assays, PPARα binding site mutation, WY14643 ligand treatment, PGC-1α shRNA knockdown, in vivo fasted rat liver transfection |
Molecular and cellular endocrinology |
High |
20638986
|
| 2018 |
CPT1A interacts with Rab14, and this interaction facilitates fatty acid trafficking from lipid droplets to mitochondria in NPC cells, thereby reducing radiation-induced lipid accumulation and maximizing ATP production to promote radiation resistance. |
LC-MS/MS protein identification, co-immunoprecipitation, immunofluorescence, in situ proximity ligation assay, computational docking, pulse-chase fatty acid trafficking assay with BODIPY C16 and MitoTracker Red, Rab14 knockdown |
Theranostics |
High |
29721083
|
| 2021 |
Butyrate is converted by ACSS2 to butyryl-CoA (BCoA), which antagonizes the binding of malonyl-CoA at Arg243 of CPT1A, thereby upregulating CPT1A activity and promoting fatty acid oxidation and iTreg differentiation. Mutation of CPT1A Arg243 impairs both malonyl-CoA and butyryl-CoA binding, identifying this residue as the responsible site. |
In vitro CPT1A activity assays, site-directed mutagenesis of Arg243, ACSS2 inhibitor, iTreg differentiation assays, mouse colitis model |
Proceedings of the National Academy of Sciences of the United States of America |
High |
34035164
|
| 2018 |
CPT1A functions as a lysine succinyltransferase (LSTase), interacting with S100A10 and succinylating it at Lys47, which stabilizes S100A10 by suppressing ubiquitylation and proteasomal degradation, thereby promoting gastric cancer cell invasion and migration. Desuccinylation is mediated by SIRT5. |
Co-immunoprecipitation, mass spectrometry identification of succinylation site, succinylation mimetic mutant (K47E) overexpression, cell invasion/migration assays, knockdown experiments |
Journal of cellular and molecular medicine |
Medium |
30394687
|
| 2022 |
Mitochondrial STAT3 stabilizes CPT1A protein by abrogating its ubiquitination and degradation in LPS-treated macrophages. This stabilization is mediated through CPT1A interaction with ubiquitin-specific peptidase 50 (USP50), whose promoter is bound by NF-κB (downstream of mitochondrial STAT3), thereby linking mitochondrial STAT3 to FAO-dependent metabolic reprogramming in sepsis. |
Mass spectrometry, co-immunoprecipitation (CPT1A–USP50 interaction), ChIP assay (NF-κB at USP50 promoter), USP50 knockdown, metabolic assays, knock-in mouse model |
Theranostics |
High |
34976224
|
| 2023 |
CPT1A recruits the ER-localized palmitoyltransferase ZDHHC4 to catalyze MAVS palmitoylation at Cys79, which promotes MAVS stabilization and activation by inhibiting K48-linked ubiquitination while facilitating K63-linked ubiquitination, thereby amplifying the type I interferon response. This is a non-FAO enzymatic function of CPT1A. |
Co-immunoprecipitation (CPT1A–ZDHHC4 and CPT1A–MAVS), palmitoylation assays, mutagenesis of MAVS Cys79, ubiquitination assays (K48 vs K63), genetic overexpression/depletion, in vivo tumor models |
Molecular cell |
High |
38016475
|
| 2021 |
CPT1A-dependent fatty acid oxidation promotes β-catenin acetylation and nuclear translocation in colon cancer cells exposed to adipocytes or fatty acids, activating Wnt/β-catenin target genes associated with cancer stemness. |
CPT1A siRNA knockdown, β-catenin nuclear translocation assays, p300 inhibitor rescue, 3D organoid culture, in vivo xenograft |
Cell death & disease |
Medium |
32913185
|
| 2019 |
CPT1A overexpression in prostate cancer cells increases histone acetylation by supplying acetyl groups, supporting castration-resistant growth; this histone acetylation increase is partially reversed by a p300-specific inhibitor, indicating a link between lipid catabolism and epigenetic regulation. |
CPT1A overexpression and knockdown cell lines, histone acetylation analysis, p300 inhibitor treatment, androgen deprivation experiments, tumor growth assays |
Cells |
Medium |
31547059
|
| 2021 |
Cpt1a overexpression in renal tubular epithelial cells (TECs) restores oxidative metabolism and mitochondrial number, increases palmitate oxidation and ATP levels, reduces fibrotic marker expression and macrophage influx in three mouse models of renal fibrosis, establishing that gain-of-function in CPT1A-mediated FAO is sufficient to protect against fibrosis. |
Conditional transgenic CPT1A knock-in mouse, three fibrosis models (UUO, FAN, adenine nephrotoxicity), palmitate oxidation assays, ATP measurements, histology, gene expression |
The Journal of clinical investigation |
High |
33465052
|
| 2023 |
CPT1A-dependent FAO in cancer cells is induced by T cell-derived IFN-γ in an AMPK-dependent manner and confers resistance to cytotoxic T lymphocyte killing by maintaining prosurvival signaling. Genetic repression or pharmacologic inhibition of CPT1A renders tumors more susceptible to CAR-T cell therapy. |
CPT1A knockout and knockdown, IFN-γ treatment, AMPK inhibition, co-culture cytotoxicity assays, CAR-T cell therapy in tumor-bearing mice |
Proceedings of the National Academy of Sciences of the United States of America |
High |
37722058
|
| 2023 |
CPT1A directly binds PHB2 in the mitochondria and modulates the PHB2-PARL interaction; increased CPT1A activity (induced by L-carnitine or amino acid mutation M593S) enhances the PHB2-PARL interaction and thereby promotes PINK1-Parkin-dependent mitophagy, improving mitochondrial function in diabetic cardiomyopathy. |
Co-immunoprecipitation (CPT1A–PHB2), adenovirus-mediated overexpression of WT and M593S mutant CPT1A, PARL overexpression rescue, immunofluorescence, transmission electron microscopy, db/db mouse model |
Acta physiologica (Oxford, England) |
Medium |
37042471
|
| 2021 |
Hepatocyte-specific Cpt1a knockout in mice activates the PPARα-FGF21 axis, elevating circulating FGF21, which drives adipose browning and increased energy expenditure; antibody-mediated FGF21 neutralization abolishes these effects, establishing a CPT1A-mediated liver-adipose cross-talk pathway. |
Liver-specific Cpt1a knockout mice, RNAseq, anti-FGF21 antibody neutralization, metabolic phenotyping, adipose tissue analysis |
Diabetes |
High |
34675003
|
| 2023 |
CPT1A directly interacts with Bcl-2 at its BH3 domain, anchoring Bcl-2 in the mitochondria in an activity-dependent manner to attenuate apoptosis in lung macrophages; disruption of this interaction induces apoptosis and reduces pulmonary fibrosis. |
Co-immunoprecipitation, CPT1A activity inhibition, Bcl-2 macrophage-specific deletion, bleomycin fibrosis mouse model, ABT-199 pharmacologic inhibition |
Cell death and differentiation |
High |
34413485
|
| 2019 |
Ethanol induces repressive H3K9 deacetylation at the CPT1A promoter via HDAC1 recruitment mediated by SP1 (proximal region) and HNF4α (distal region); butyrate/tributyrin inhibits HDAC1 and facilitates p300 binding at these same sites, restoring CPT1A transcription and reducing hepatic steatosis. |
Chromatin immunoprecipitation (ChIP) in vivo (mouse liver) and in vitro (primary hepatocytes), ethanol and butyrate treatment, histone modification analysis |
Cellular and molecular gastroenterology and hepatology |
High |
31654770
|
| 2023 |
SIRT1 directly deacetylates CPT1A at Lys675, which suppresses ubiquitin-dependent degradation of CPT1A and promotes FAO; berberine increases SIRT1 expression, which in turn increases CPT1A protein level and activity to alleviate NAFLD. |
Co-immunoprecipitation (SIRT1–CPT1A) in HEK293T cells, CPT1A activity assay, site identification at Lys675, SIRT1 overexpression/knockdown |
Gastroenterology report |
Medium |
37293270
|
| 2018 |
High-fructose feeding induces hypermethylation of the CPT1A promoter region, associated with reduced CPT1A mRNA expression and hepatic lipid accumulation in rats. |
qAMP restriction digestion and real-time PCR methylation analysis, real-time PCR for mRNA quantification, rat dietary model |
Biochemical and biophysical research communications |
Low |
26519879
|
| 2018 |
High-fat diet elevates hepatic Cpt1a expression through coordinated epigenetic mechanisms: reduced DNA methylation and increased H3K4Me2 upstream/within the promoter, accompanied by increased PPARα, C/EBPβ, PGC-1α, and BAF60a (SMARCD1) binding in the first intron at the transcription start site region. |
Bisulfite sequencing (DNA methylation), ChIP (H3K4Me2, PPARα, C/EBPβ, PGC-1α, BAF60a), rat dietary model, NEFA-treated H4IIEC3 hepatoma cells |
Biochimica et biophysica acta. Gene regulatory mechanisms |
Medium |
30605728
|
| 2020 |
Liver-targeted AAV delivery of a permanently active mutant form of human CPT1A (hCPT1AM) enhances hepatic FAO and autophagy, reduces liver steatosis, and improves glucose homeostasis in a mouse model of established obesity and NAFLD. |
AAV9-hCPT1AM gene delivery, FAO assays, lipidomic analysis, metabolic phenotyping in HFD mice |
FASEB journal |
Medium |
32666604
|
| 2009 |
CPT1A catalyzes the rate-limiting step of long-chain fatty acid oxidation: transfer of long-chain acyl groups from acyl-CoA to carnitine, generating acylcarnitines that cross the inner mitochondrial membrane. The enzyme is inhibited allosterically by malonyl-CoA. |
Review synthesizing enzymatic activity assays and biochemical studies (multiple prior studies summarized in review context) |
Endocrinology |
High |
31900483
|
| 2018 |
Genetic deletion of Cpt1a specifically in T cells demonstrates that the ACC2/Cpt1a axis is largely dispensable for effector, memory, and regulatory T cell formation, and that the effects of etomoxir on T cell differentiation are independent of Cpt1a expression. |
T cell-specific Cpt1a genetic knockout mice, primary/memory/regulatory T cell functional assays, etomoxir treatment comparison |
Cell metabolism |
High |
30043753
|
| 2024 |
CPT1A restrains ubiquitination and degradation of c-Myc, while c-Myc transcriptionally activates CPT1A expression, forming a positive feedback loop that activates the NRF2/GPX4 antioxidant system and downregulates ACSL4, thereby suppressing ferroptosis in lung cancer stem cells. |
Lung epithelial-specific Cpt1a-knockout mouse model, metabolomics, transcriptomics, co-immunoprecipitation (CPT1A–c-Myc), ubiquitination assays, NRF2/GPX4/ACSL4 expression analysis |
Signal transduction and targeted therapy |
Medium |
38453925
|
| 2023 |
A novel covalent inhibitor DHP-B binds to Cys96 of CPT1A, blocks FAO, and disrupts the mitochondrial CPT1A-VDAC1 protein interaction, leading to increased mitochondrial permeability and reduced oxygen consumption in colorectal cancer cells. |
Covalent binding characterization, Cys96 identification, CPT1A-VDAC1 co-immunoprecipitation, oxygen consumption assay, mitochondrial permeability measurement, in vitro and in vivo tumor models |
Redox biology |
Medium |
37977042
|
| 2022 |
CPT1A-mediated FAO in osteoclast precursors promotes their fusion by increasing expression of clathrin heavy chain (CLTC) and clathrin light chain A (CLTA) through enhanced binding of transcription factor C/EBPβ to CLTA and CLTC promoters, thereby driving clathrin-dependent endocytosis and podosome formation. |
CPT1A overexpression/knockdown, C/EBPβ ChIP at CLTA/CLTC promoters, clathrin expression analysis, osteoclast fusion and podosome assays, RA patient samples |
Frontiers in immunology |
Medium |
35273614
|
| 2023 |
CPT1A loss reduces acetyl-CoA production, which decreases histone acetylation and epigenetically reprograms BCAA catabolism, leading to BCAA accumulation and hyperactivation of mTOR signaling in TP53-mutant hepatocellular carcinoma; this renders cells sensitive to the mTOR inhibitor AZD-8055. |
CPT1A genetic ablation (de novo liver tumor and xenograft models), acetyl-CoA measurement, histone acetylation analysis, BCAA metabolomics, mTOR pathway analysis, mTOR inhibitor treatment |
Cancer letters |
Medium |
38823763
|
| 2023 |
FOXA1 transcriptionally promotes CPT1A expression by binding a cis-inducible element in the CPT1A promoter, as demonstrated by ChIP and dual-luciferase reporter assays; FOXA1-mediated CPT1A upregulation promotes FAO and alleviates ferroptosis in renal tubular epithelial cells under diabetic conditions. |
Chromatin immunoprecipitation assay, dual-luciferase reporter gene assay, FOXA1 overexpression/knockdown, CPT1A activity and FAO assays, diabetic mouse model |
Molecular and cellular endocrinology |
Medium |
38128823
|
| 2025 |
CPT1A uses its lysine succinyltransferase (LSTase) activity to succinylate mitochondrial fission factor (MFF), which promotes mitochondria-associated membrane formation and SREBP1 activation, leading to SCD1 upregulation and lipid desaturation essential for ovarian cancer stem cell stemness maintenance. |
Co-immunoprecipitation (CPT1A–MFF), succinylation assays, SREBP1 activation assays, SCD1 expression analysis, LSTase activity inhibition with Glyburide, in vitro and in vivo stemness assays |
Communications biology |
Medium |
39956875
|
| 2022 |
Cpt1a-dependent mitochondrial fatty acid oxidation is required for neutrophil chemotaxis; pharmacologic inhibition of Cpt1a impairs chemoattractant signal amplification, blunts neutrophil trafficking to sites of infection, and increases susceptibility to bacterial pneumonia in mice. |
Pharmacologic Cpt1a inhibition in murine pneumonia model, neutrophil chemotaxis assays, human phenome association study for pneumonia risk variant |
Communications biology |
Medium |
36513703
|
| 2023 |
CPT1A in AgRP neurons is required for sex-dependent regulation of food intake, energy expenditure, and fluid balance; male Cpt1aKO mice show altered food intake while female Cpt1aKO mice show increased energy expenditure and brown adipose tissue activity; both sexes develop polydipsia and polyuria with reduced vasopressin levels. AgRP neurons from Cpt1aKO mice show reduced mitochondria and decreased presynaptic innervation to the paraventricular nucleus. |
AgRP neuron-specific Cpt1a knockout (tamoxifen-inducible AgRPCreERT2), metabolic phenotyping, calorimetry, AAV-mediated neuronal labeling, RiboTag ribosome profiling, single-nucleus RNA-seq |
Biology of sex differences |
High |
36966335
|
| 2024 |
Tubule-specific Cpt1a deletion in mice does not significantly affect kidney function or fibrosis after aging or chronic injury; primary tubule cells lacking Cpt1a show modest reduction in palmitate oxidation but compensate through upregulation of peroxisomal FAO enzymes, suggesting peroxisomal β-oxidation compensates for loss of mitochondrial CPT1A-mediated FAO in tubules. |
Tubule-specific Cpt1a conditional KO mice, aristolochic acid and UUO injury models, 2-year aging, single-nuclear RNA-Seq, palmitate oxidation assays |
JCI insight |
High |
38516886
|
| 2024 |
ALKBH5 demethylase removes m6A modification from CPT1A mRNA, enhancing its stability and upregulating CPT1A expression in macrophages, which promotes M2 macrophage polarization and FAO, facilitating colorectal cancer progression. |
Me-RIP assay, Actinomycin D mRNA stability assay, ALKBH5 gain-of-function, OCR measurement, co-culture CRC/macrophage model |
Experimental cell research |
Medium |
38479704
|
| 2024 |
CPT1A promotes K63-type ubiquitination of IGF2BP1 via RNF5; IGF2BP1 then binds m6A sites on CPT1A mRNA and enhances its stability, creating a regulatory axis (PPARγ-RNF5-IGF2BP1-CPT1A) in steatotic hepatocellular carcinoma that sustains FAO. |
RNF5–IGF2BP1 interaction assays, K63-ubiquitination characterization, m6A-RIP for CPT1A mRNA, mRNA stability assays, PPARγ ChIP at RNF5 promoter, lipidomics, transcriptomics |
Cancer letters |
Medium |
39734009
|
| 2024 |
PACS2 positively regulates CPT1A expression; PACS2 silencing downregulates CPT1A and upregulates DHODH, reversing HGPA-induced ferroptosis in cardiomyocytes. CPT1A agonist treatment in PACS2-silenced cells re-exacerbates ferroptosis and mitochondrial damage, placing CPT1A downstream of PACS2 in the PACS2/CPT1A/DHODH ferroptosis signaling pathway. |
PACS2 siRNA knockdown, CPT1A agonist rescue, ferroptosis markers (iron, lipid peroxides, ROS), STZ/HFD diabetic mouse model, cardiac function measurement |
Cardiovascular diabetology |
Medium |
39633391
|
| 2024 |
Astragaloside IV (ASIV) restores CPT1A activity, which in turn mediates K99 succinylation of HSD17B10; this succinylation maintains mitochondrial RNase P stability by stabilizing the HSD17B10-MRPP1 interaction. K99R mutation of HSD17B10 disrupts its binding to CPT1A and MRPP1, impairs RNase P activity, and induces oxidative stress. Molecular docking and cell thermal shift assay suggest ASIV directly binds CPT1A. |
Succinylated proteomics, site-directed mutagenesis (K99R), molecular docking, cell thermal shift assay, Co-IP (HSD17B10–CPT1A, HSD17B10–MRPP1), RNase P activity assay, db/db mouse model |
Phytotherapy research |
Medium |
39038923
|
| 2024 |
CPT1A anchors Bcl2 to the mitochondrial membrane in podocytes, preventing cytochrome C release and mitochondrial apoptosis; CPT1A also fosters lipid consumption via FAO, reducing lipotoxicity. FOXA1 is identified as a transcription factor for CPT1A in podocytes. CPT1A overexpression protects against albuminuria and glomerulosclerosis in diabetic mice. |
CPT1A overexpression, streptozotocin diabetic mouse model, Bcl2 mitochondrial localization assay, cytochrome C release assay, FOXA1 identification as upstream regulator |
Diabetes |
Medium |
38506804
|
| 2012 |
A novel homozygous missense mutation R595W in CPT1A reduces CPT1A enzymatic activity by inducing steric hindrance: Arg595 contributes to a hydrogen-bond network with Cys304 and Met593, and its replacement by tryptophan causes steric clash with Ile480 in α-helix 12, disrupting protein architecture and function without directly affecting the catalytic site or carnitine pocket. |
CPT1A activity assay in patient fibroblasts, sequence alignment, protein structural modeling, comparison with known C304W mutant mechanism |
JIMD reports |
Medium |
23430932
|
| 2023 |
CPT1A-mediated FAO promotes VEGF-C and VEGF-D expression in breast cancer cells and regulates VEGFR3 expression in lymphatic endothelial cells via acetyl-CoA-mediated H3K9 acetylation, promoting lymphangiogenesis; acetate supplementation rescues VEGFR3 expression upon CPT1A knockdown. |
CPT1A shRNA knockdown, LC-MS acetyl-CoA/CoA ratio measurement, VEGF-C/D and VEGFR3 expression analysis, H3K9ac analysis, acetate rescue, transwell and lymphatic vessel formation assays |
Biomedicine & pharmacotherapy |
Medium |
29940537
|
| 2024 |
Coriobacteriaceae bacteria (Cori.ST1911) activate CPT1A and increase acylcarnitine levels in colorectal cancer cells via the CPT1A-ERK signaling pathway, promoting tumorigenesis; this was demonstrated in CRC cell lines, organoids, and multiple CRC mouse models. |
16S rRNA and metagenomic sequencing, LC-MS/MS metabolomics, CRC cell/organoid co-culture with Coriobacteriaceae, CPT1A-ERK pathway analysis, multiple CRC mouse models |
NPJ biofilms and microbiomes |
Medium |
38245554
|
| 2024 |
CPT1A mediates chemoresistance in hypopharyngeal squamous cell carcinoma by interacting with autophagy-related protein ATG16L1 and stimulating its succinylation, which drives autophagosome formation and autophagy; 3-methyladenine (autophagy inhibitor) or CPT1A inhibitor reduces cisplatin resistance. |
Co-immunoprecipitation (CPT1A–ATG16L1), succinylation assays, 3-MA autophagy inhibitor treatment, CPT1A inhibitor treatment, in vitro and in vivo cisplatin sensitivity assays |
Cell insight |
Medium |
37961047
|
| 2022 |
STAT3/CPT1A-dependent FAO sustains hepatic stellate cell (HSC) proliferation and activation; cryptotanshinone inhibits STAT3 phosphorylation and nuclear translocation, reducing CPT1A expression and FAO (measured by ATP and acetyl-CoA reduction), with CPT1A overexpression reversing the anti-fibrotic effect. |
Transcriptomic sequencing, CPT1A and CPT1B expression analysis, STAT3 phosphorylation and nuclear translocation assay, ATP and acetyl-CoA measurement, CPT1A overexpression rescue, CCl4 mouse fibrosis model |
Chemico-biological interactions |
Medium |
38936533
|