| 2010 |
FATP2 is a multifunctional protein with subcellular localization-dependent activity: in mouse liver, only a minor fraction localizes to peroxisomes where it contributes to ~50% of peroxisomal very long-chain acyl-CoA synthetase (VLACS) activity, while total hepatic VLACS activity is not significantly affected by FATP2 loss; in contrast, liver-specific FATP2 knockdown reduced long-chain fatty acid (LCFA) uptake by 40%, indicating that FATP2's primary hepatic role is as a plasma membrane-associated LCFA transporter rather than a peroxisomal enzyme. |
Liver-specific shRNA knockdown via AAV8, subcellular fractionation, VLACS activity assays, radiolabeled fatty acid uptake assays in mice |
American journal of physiology. Endocrinology and metabolism |
High |
20530735
|
| 2011 |
In human hepatoma cells (HuH7, HepG2), FATP2 localizes to the endoplasmic reticulum (not plasma membrane); overexpression of FATP2 highly increases acyl-CoA synthetase activity and uptake of both radiolabeled oleic acid and fluorescent fatty acid analogue (BODIPY-C12), with FATP2 showing the highest effect on fatty acid uptake among the transporters tested, suggesting it drives uptake indirectly through esterification (vectorial acylation). |
Double immunofluorescence co-localization with ER markers, overexpression, ACS activity assay, [3H]-oleic acid uptake, FACS-based BODIPY-C12 uptake quantification |
International journal of medical sciences |
Medium |
22022213
|
| 2013 |
FATP2 has dual function in fatty acid transport and activation: it can partner with long-chain acyl-CoA synthetases (ACSLs) to generate LCFA-CoAs (e.g., C16:0-CoA, C18:3-CoA) through vectorial acylation, while its intrinsic very long-chain acyl-CoA synthetase activity directly generates C20:4-CoA and C22:6-CoA; FATP2 expression also alters intracellular trafficking of exogenous fatty acids into phosphatidic acid and specific phospholipid classes (PC, PE, PI, PS) in a fatty acid species-selective manner. |
Stable isotopically labeled fatty acids (tracer), mass spectrometry-based lipidomics, overexpression in cells |
Biochemical and biophysical research communications |
Medium |
24113382
|
| 2009 |
Human FATP2-mediated fatty acid transport can be selectively inhibited by small molecule compounds identified in a high-throughput screen using yeast expressing human FATP2; five representative compounds inhibited LCFA uptake with low-micromolar IC50 in FATP2-expressing Caco-2 and HepG2 cells but not in 3T3-L1 adipocytes (which lack FATP2), with no effect on long-chain acyl-CoA synthetase activity, glucose transport, or cell viability, demonstrating that fatty acid transport and activation can be pharmacologically dissociated. |
High-throughput screen in yeast expressing human FATP2, fluorescent fatty acid uptake assay (BODIPY-C12), IC50 determination in human cell lines, TEER, glucose transport assay, cell viability |
Biochemical pharmacology |
Medium |
19913517
|
| 2016 |
A naturally occurring splice variant of FATP2, FATP2b (lacking exon 3), retains full fatty acid transport function but completely lacks acyl-CoA synthetase activity; use of this variant in inhibitor screens identified two compounds, Lipofermata and Grassofermata, as effective fatty acid transport inhibitors both in vitro and in vivo in mouse models, demonstrating that transport and synthetase activities are separable functions of FATP2. |
Splice variant characterization, enzymatic activity assays, fatty acid uptake assays, in vitro and in vivo inhibitor studies in mouse models |
MedChemComm |
Medium |
27446528
|
| 2017 |
FATP2 (encoded by Slc27a2) is expressed exclusively in kidney proximal tubule epithelial cells along the apical but not basolateral membrane; Slc27a2 knockout mice are protected from proteinuria-induced tubular injury, and Slc27a2-null proximal tubules and FATP2 shRNA-treated proximal tubule cell lines show significantly reduced NEFA uptake and reduced palmitate-induced apoptosis, establishing FATP2 as a major apical proximal tubule NEFA transporter that mediates lipoapoptosis. |
Immunolocalization, mRNA/protein expression, Slc27a2 knockout mouse model, ex vivo microperfusion, in vitro shRNA knockdown, apoptosis assay, lipidated albumin-induced proteinuria model |
Journal of the American Society of Nephrology : JASN |
High |
28993506
|
| 2020 |
In the aged tumor microenvironment, aged dermal fibroblasts secrete increased neutral lipids (especially ceramides); melanoma cells exposed to this lipid secretome upregulate FATP2, which mediates increased lipid uptake; FATP2-dependent lipid accumulation supports mitochondrial metabolism and drives resistance to BRAF/MEK inhibition, and FATP2 blockade overcomes this age-related resistance in animal models. |
Co-culture experiments, lipidomic analysis, FATP2 overexpression/knockdown, lipid uptake assays, mitochondrial metabolism assays, in vivo tumor models with targeted therapy |
Cancer discovery |
Medium |
32499221
|
| 2020 |
Deletion of FATP2 in mouse liver shifts the transcriptomic landscape, upregulating PPARα-regulated genes involved in fatty acid degradation, peroxisome biogenesis, and fatty acid synthesis; targeted metabolomics shows increases in C16:0, C16:1, C18:1 fatty acids and lipid mediators (lipoxin A4, prostaglandin J2) and decreased 20-HETE, indicating FATP2 provides PPARα with specific proximal ligands and broadly governs hepatic lipid metabolism. |
FATP2-null (Fatp2-/-) mouse model, RNA-Seq transcriptomics, targeted metabolomics, RT-qPCR validation |
The Journal of biological chemistry |
Medium |
32188695
|
| 2023 |
Arachidonic acid activates the NLRP3 inflammasome in myeloid-derived suppressor cells (MDSCs) specifically through FATP2; FATP2-mediated arachidonic acid uptake causes mitochondrial dysfunction and enhanced ROS production, which bridges lipid uptake to NLRP3 activation; activated MDSCs then stimulate CD4+ T cells to produce IL-17, promoting post-transplant tumor recurrence; blockade of FATP2 (Lipofermata) inhibits this entire axis. |
Lipid uptake receptor screening, mouse fatty liver ischemia-reperfusion injury model with tumor recurrence, FATP2 inhibitor (Lipofermata) treatment, NLRP3/ROS/IL-17 mechanistic assays in vitro and in vivo, clinical cohort validation |
JHEP reports : innovation in hepatology |
Medium |
37916155
|
| 2023 |
FATP2 physically interacts with ACSL1 (long-chain acyl-CoA synthetase 1) in NSCLC cells, as demonstrated by Co-IP; FATP2 knockdown combined with ACSL1 overexpression further inhibits cell proliferation, lipid deposition, and promotes fatty acid decomposition compared to either alone, indicating FATP2 regulates lipid metabolism and cancer cell proliferation through functional interaction with ACSL1. |
Co-immunoprecipitation (Co-IP), siRNA knockdown, pcDNA-ACSL1 overexpression, cell proliferation assay, lipid deposition assay, ER stress markers |
Tissue & cell |
Low |
37172427
|
| 2023 |
NRF2 directly transcriptionally activates FATP2 in the context of valproic acid (VPA)-induced hepatic steatosis: VPA binds to Cys288 and Arg415 of KEAP1, promoting autophagic KEAP1 degradation, releasing NRF2 to translocate to the nucleus where it activates FATP2 transcription, thereby enhancing fatty acid uptake and driving steatosis; this was confirmed by chromatin immunoprecipitation and dual-luciferase reporter assays, and FATP2 knockout abrogated NRF2-driven steatosis. |
ChIP assay, dual-luciferase reporter assay, NRF2 overexpression/knockout mice (AAV and CRISPR/Cas9), FATP2 knockout mice (homologous recombination), site-directed mutagenesis of KEAP1 binding sites, in vivo VPA treatment |
Theranostics |
High |
40303331
|
| 2024 |
Loss of the epoxygenase Cyp2c44 (and reduced EET levels) leads to increased plasma membrane localization of FATP2 in hepatocytes, which is associated with increased total unsaturated fatty acids and diacylglycerol (DAG) accumulation, activation of PKCδ at the plasma membrane, IRS-1 serine phosphorylation, and impaired insulin signaling; treatment with the EET analog EET-A in Cyp2c44-/- HFD-fed mice decreased plasma membrane FATP2 and PKCδ levels with improved glucose tolerance, placing FATP2 membrane localization downstream of EET signaling and upstream of the DAG/PKCδ/IRS-1 axis. |
Cyp2c44-/- mouse model, subcellular fractionation, PKCδ inhibitor treatment, EET-A analog treatment, glucose tolerance test, lipidomics, immunoblotting |
Diabetes |
Medium |
38743615
|
| 2024 |
FATP2 expression is upregulated during osteoclast (OC) differentiation and in bone marrow of HFD-fed mice; FATP2 siRNA or Lipofermata inhibition significantly suppresses OC differentiation with minimal effect on osteoblasts; RNA-seq shows Lipofermata reduces fatty acid β-oxidation, energy metabolism, and ROS production in OCs; in vivo Lipofermata treatment rescues bone loss in LPS-induced and ovariectomy models by inhibiting OC differentiation, establishing FATP2 as a regulator of osteoclastogenesis through fatty acid uptake and energy/ROS metabolism. |
siRNA knockdown, specific inhibitor (Lipofermata), RNA-seq, in vivo mouse models (LPS-induced and ovariectomy), bone mass measurement, ROS assays |
Journal of bone and mineral research |
Medium |
38477781
|
| 2024 |
CEACAM6 promotes SLC27A2/FATP2 protein stability by interacting with both SLC27A2 and the deubiquitinase USP29; CEACAM6 facilitates USP29-mediated deubiquitination of SLC27A2, thereby upregulating fatty acid uptake and FAO in gastric cancer cells; pharmacological inhibition of SLC27A2 attenuates the tumor-initiating ability of CEACAM6-positive gastric cancer. |
Co-immunoprecipitation (protein-protein interaction), deubiquitination assay, SLC27A2 inhibitor (Lipofermata), in vitro and in vivo tumor models |
Cancer gene therapy |
Low |
39562695
|
| 2025 |
In pancreatic islets, FATP2 expression is restricted to α-cells; FATP2 knockout or pharmacological inhibition (Lipofermata) in db/db mice and isolated human islets increases GLP-1-positive α-cell mass and stimulates GLP-1 secretion from α-cells; this α-cell-derived GLP-1 promotes paracrine insulin secretion from β-cells, reducing plasma glucose; the glucose-lowering effect is abrogated by GLP-1 receptor antagonism (exendin[9-39]), confirming that FATP2 inhibition acts through α-cell GLP-1 secretion rather than enteroendocrine pathways. |
FATP2 global KO mouse (db/db background), small molecule inhibitor (Lipofermata), GLP-1 receptor antagonist (exendin[9-39]), immunolocalization, αTC1-6 cell and human islet assays, oral vs. IP glucose challenge, mRNA co-expression analysis |
bioRxiv : the preprint server for biologypreprint |
Medium |
39975070
|
| 2023 |
FATP2 homology model (validated by AlphaFold2 prediction and site-directed mutagenesis) was used to identify key residues for inhibitor binding; virtual screening identified two nanomolar IC50 inhibitors of FATP2-dependent fatty acid uptake and apoptosis in proximal tubule cells, providing structural insights into the FATP2 binding site. |
Homology modeling, AlphaFold2 structural prediction, site-directed mutagenesis, virtual docking, in vitro fatty acid uptake assay, apoptosis assay, molecular dynamics simulations |
International journal of biological macromolecules |
Low |
37307967
|
| 2025 |
FATP2 inhibition (Lipofermata) in human monocytes reduces LPS-induced inflammatory responses and decreases biosynthesis of arachidonic acid-derived lipid mediators (PGE2, TxB2), indicating FATP2-dependent arachidonic acid uptake supports eicosanoid production; conversely, in mature monocyte-derived macrophages, Lipofermata enhances LPS-induced cytokine production and induces cell death likely through inflammasome activation, demonstrating cell type-specific roles of FATP2 in inflammatory lipid metabolism. |
Lipofermata inhibitor treatment, LPS stimulation, cytokine measurement, lipidomics (lipid mediator profiling), cell death assays in human monocytes and macrophages |
Immunology letters |
Low |
41015393
|