| Application | Recommended Dilution |
|---|---|
| Western Blot (WB) | 1:500–1:2000 |
| Immunohistochemistry (IHC) | 1:20–1:200 |
| Immunofluorescence (IF/ICC) | 1:250–1:1000 |
ACAA1 facilitates fatty acid β-oxidation by converting acyl-CoA esters into acetyl-CoA, a substrate for the TCA cycle . Its dysregulation is linked to metabolic disorders:
Type 2 Diabetes (T2D): ACAA1 expression predicts pre-diabetic metabolic signatures in mouse models .
Triple-Negative Breast Cancer (TNBC): High ACAA1 expression correlates with resistance to CDK4/6 inhibitors in RB1-proficient patients, making it a therapeutic target .
In non-small cell lung cancer (NSCLC), ACAA1 expression is inversely associated with tumor mutation burden and positively correlates with CD4+ T-cell infiltration . Key findings include:
Prognostic Value: Higher ACAA1 expression predicts improved survival in cancers such as bladder, breast, liver, and lung adenocarcinoma .
Immune Microenvironment: ACAA1 downregulation by oncogenic KRAS (via MAPK signaling) reduces immune infiltration, worsening prognosis .
Function: Peroxisomal β-oxidation and TCA cycle substrate generation .
Deficiency: Leads to pseudo-Zellweger syndrome, a peroxisomal biogenesis disorder .
Proteintech (2025). ACAA1 Antibody (12319-2-AP).
Frontiers in Oncology (2020). ACAA1 Is a Predictive Factor of Survival and Is Correlated With T Cell Infiltration in Non-Small Cell Lung Cancer.
NCBI Gene (2022). ACAA1 acetyl-CoA acyltransferase 1 [Homo sapiens].
ACAA1 Antibody is responsible for the thiolytic cleavage of straight chain 3-oxoacyl-CoAs. It catalyzes the cleavage of short, medium, and long straight chain 3-oxoacyl-CoAs, with medium chain 3-oxoacyl-CoAs being the optimal substrates.
ACAA1 (Acetyl-CoA acyltransferase 1) is an enzyme responsible for the thiolytic cleavage of straight chain 3-keto fatty acyl-CoAs (3-oxoacyl-CoAs). It plays a crucial role in peroxisomal beta-oxidation of fatty acids, catalyzing the cleavage of short, medium, long, and very long straight chain 3-oxoacyl-CoAs . The enzyme provides substrates to the tricarboxylic acid (TCA) cycle, a critical step in cellular metabolism .
Detecting ACAA1 is particularly important in research focused on:
Fatty acid metabolism disorders
Cancer metabolism
Peroxisomal function
Lipid homeostasis
Due to its metabolic significance and altered expression in various disease states, particularly cancer, ACAA1 has become an important target for antibody-based detection in research applications .
For optimal results in immunohistochemistry (IHC) applications with ACAA1 antibodies, follow these methodological guidelines:
Sample Preparation:
Use formalin-fixed, paraffin-embedded tissue sections
For optimal antigen retrieval, use TE buffer at pH 9.0, or alternatively, citrate buffer at pH 6.0
Recommended Protocol:
Deparaffinize and rehydrate tissue sections
Perform antigen retrieval using TE buffer (pH 9.0)
Block endogenous peroxidase activity (if using HRP-based detection)
Apply diluted primary ACAA1 antibody (dilution ranges from 1:20 to 1:200, depending on the specific antibody)
Incubate overnight at 4°C or 1-2 hours at room temperature
Apply appropriate secondary antibody
Develop signal and counterstain
Validated Tissues:
Positive staining has been observed in:
Human thyroid cancer tissue
Human lung tissue
Human prostate cancer tissue
For fluorescent IHC applications, a dilution of 1:600 for primary antibody with detection using anti-Rabbit-Cy3 secondary antibody at 1:200 has shown optimal results in human liver tissue .
For Western blot applications, follow these evidence-based guidelines:
Sample Preparation:
Tissue lysates or cell extracts prepared in appropriate lysis buffer
Protocol:
Separate proteins by SDS-PAGE
Transfer to nitrocellulose or PVDF membrane
Dilute primary ACAA1 antibody according to manufacturer's recommendations:
Incubate overnight at 4°C or 1-2 hours at room temperature
Wash with TBST
Incubate with appropriate HRP-conjugated secondary antibody
Develop using ECL detection system
Validated Samples:
Western blot positivity has been confirmed in:
Proper storage of ACAA1 antibodies is critical for maintaining their specificity and sensitivity. Based on the manufacturer recommendations from the search results:
Storage Conditions:
Format: Most ACAA1 antibodies are supplied in a liquid form containing preservatives and stabilizers
Buffer: Typically PBS with 0.02% sodium azide and 50% glycerol at pH 7.3
Stability: Stable for one year after shipment when stored properly
Best Practices:
Avoid repeated freeze-thaw cycles by aliquoting upon receipt
For antibodies stored in glycerol solutions, aliquoting may be unnecessary at -20°C
When working with the antibody, keep it on ice
Return to -20°C storage promptly after use
Note that storage recommendations may vary slightly between manufacturers, so always refer to the specific product data sheet for optimal storage conditions.
ACAA1 antibodies serve as valuable tools for investigating the metabolic basis of cancer progression, as there is significant evidence linking ACAA1 expression to cancer outcomes:
Methodological Approaches:
Research Applications:
Compare ACAA1 protein levels across tumor grades and stages
Correlate ACAA1 expression with patient survival data
Investigate connections between KRAS mutations and ACAA1 expression, as KRAS may regulate ACAA1 levels
Study how ACAA1 expression relates to tumor mutation burden by examining correlations with DNA repair genes (BRCA1, ATM, ATR, CDK1, PMS2, MSH2, MDH6)
The down-regulation of ACAA1 in most cancer types suggests it may function as a tumor suppressor, potentially by altering nutrient configuration and influencing immune responses in the tumor microenvironment .
Research using ACAA1 antibodies has revealed significant correlations between ACAA1 expression and immune cell infiltration in cancer, particularly in lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LUSC):
Key Findings:
CD4+ T Cell Infiltration:
T Cell Subsets:
T Cell Exhaustion:
Methodological Applications:
Use ACAA1 antibodies in combination with immune cell markers in multiplex immunofluorescence to study co-localization
Combine ACAA1 IHC with CD4+ T cell staining to validate the correlation in patient samples
Investigate mechanisms by which ACAA1 influences immune cell recruitment or function
Study how metabolites produced by ACAA1-mediated fatty acid oxidation might affect T cell function
These findings suggest that ACAA1 may influence anti-tumor immunity by affecting T cell infiltration and function, representing a potential link between cancer metabolism and immune responses .
To investigate ACAA1's role in peroxisomal fatty acid oxidation, researchers can employ several complementary methodological approaches using ACAA1 antibodies:
Subcellular Localization Studies:
Immunofluorescence Microscopy:
Subcellular Fractionation:
Functional Analysis:
Enzymatic Activity Assays:
Knockdown/Knockout Studies:
Create ACAA1 knockdown or knockout models
Use ACAA1 antibodies to confirm protein reduction
Measure changes in:
Fatty acid oxidation rate
Accumulation of β-oxidation intermediates
Effects on TCA cycle substrates
Metabolic Flux Analysis:
Combine ACAA1 detection with metabolomics approaches
Trace the metabolism of labeled fatty acids in the presence or absence of ACAA1 inhibition
These methodological approaches can help elucidate ACAA1's specific role in peroxisomal fatty acid oxidation and its impact on cellular metabolism, which has implications for understanding metabolic disorders and developing potential therapeutic targets.
Validating antibody specificity is crucial for obtaining reliable experimental results. For ACAA1 antibodies, researchers should implement these validation strategies:
Comprehensive Validation Approach:
Genetic Knockdown/Knockout Controls:
Use siRNA knockdown or CRISPR/Cas9 knockout of ACAA1
Confirm reduction/absence of signal by Western blot and immunostaining
This verifies that the antibody specifically detects ACAA1 and not off-target proteins
Recombinant Protein Controls:
Test antibody against purified recombinant ACAA1 protein
Include related family members (e.g., other thiolases) to confirm specificity
This is particularly important as ACAA1 has sequence similarities with other acyltransferases
Multiple Antibody Validation:
Compare results using different ACAA1 antibodies targeting distinct epitopes
For example, compare results from antibodies targeting N-terminal regions (like peptide ADVVVVHGRRTAICRAGRGGFKDTTPDELLSAVMTAVLKDVNLRPEQLGD) with those targeting other regions (like GNSSQVSDGAAAILLARRSKAEELGLPILGVLRSYAVVGVPPDIMGIGPAYAIPVA)
Immunoprecipitation-Mass Spectrometry:
Multi-application Concordance:
Orthogonal Validation:
By implementing these validation strategies, researchers can ensure their ACAA1 antibodies are detecting the intended target with high specificity, enhancing the reliability and reproducibility of their experimental results.
When using ACAA1 antibodies to study metabolic disorders associated with peroxisomal dysfunction, researchers should consider several methodological and interpretative factors:
Methodological Considerations:
Tissue-Specific Expression Patterns:
Sample Processing:
Distinguishing ACAA1 Isoforms:
Research Applications in Metabolic Disorders:
Zellweger Spectrum Disorders:
Use ACAA1 antibodies to assess peroxisomal biogenesis
Compare ACAA1 localization in patient vs. control samples
Abnormal localization patterns may indicate defects in peroxisomal import machinery
Single Enzyme Deficiencies:
In suspected ACAA1 deficiency, antibodies can verify protein absence/abnormality
Combine with functional assays to correlate protein levels with enzyme activity
Secondary Peroxisomal Dysfunction:
Study ACAA1 expression changes in conditions like diabetes, obesity, or non-alcoholic fatty liver disease
Investigate whether ACAA1 dysregulation contributes to disease pathophysiology
Therapeutic Development:
Use ACAA1 antibodies to monitor response to experimental therapies
Assess whether interventions restore normal peroxisomal function and ACAA1 expression/localization
By carefully considering these factors, researchers can effectively use ACAA1 antibodies to advance our understanding of peroxisomal disorders and potentially develop diagnostic tools or therapeutic approaches for these conditions.
When working with ACAA1 antibodies, researchers may encounter several technical challenges. Here are solutions based on published methodologies:
Solutions:
Optimize blocking conditions:
Adjust antibody concentration:
Modify antigen retrieval:
Include proper negative controls:
Use isotype control antibodies (e.g., rabbit IgG for polyclonal antibodies)
Omit primary antibody in one section as technical control
Solutions:
Optimize protein extraction:
Use extraction buffers containing protease inhibitors to prevent degradation
For peroxisomal proteins, consider specialized fractionation methods
Adjust antibody dilution:
Address potential isoforms or post-translational modifications:
Validate specificity using knockdown controls
Solutions:
Increase antibody amount:
Optimize lysis conditions:
Use non-denaturing buffers to preserve protein structure
Modify protocol:
Solutions:
Standardize protocols:
Maintain consistent antibody lot numbers when possible
Document detailed protocols including incubation times and temperatures
Include positive controls:
Consider storage issues:
Store antibodies at -20°C and avoid freeze-thaw cycles
For long-term storage, aliquot antibodies to minimize degradation
Implementing these technical solutions should address most common challenges encountered when working with ACAA1 antibodies.
Optimizing immunofluorescence protocols for ACAA1 detection requires consideration of cell type-specific factors and careful attention to technical details:
Protocol Optimization by Cell Type:
Hepatocytes (e.g., HepG2, L02 cells):
Lung Epithelial Cells (e.g., A549 cells):
Neuronal Cells (e.g., U-251 cells):
Primary Human Tissues:
General Optimization Strategies:
Signal Amplification Options:
Standard: Primary antibody + fluorophore-conjugated secondary antibody
Enhanced: Biotin-streptavidin system for signal amplification
Tyramide signal amplification for weak signals
Background Reduction:
Pre-absorb secondary antibodies with tissue powder
Include 0.1-0.3% Triton X-100 in blocking solution
Use Sudan Black (0.1-0.3%) to reduce autofluorescence, particularly in tissues with high lipid content
Controls and Validation:
Imaging Considerations:
Use confocal microscopy for better visualization of peroxisomal localization
Acquire z-stacks to capture the three-dimensional distribution of peroxisomes
Compare visualization with both wide-field and confocal approaches
By tailoring these optimization strategies to specific cell types and research questions, investigators can achieve reliable and reproducible ACAA1 detection in immunofluorescence applications.
Peroxisomal dysfunction is increasingly recognized as a contributor to neurodegenerative pathologies. ACAA1 antibodies offer valuable tools to investigate these connections:
Methodological Approaches:
Comparative Expression Analysis:
Use ACAA1 antibodies to compare expression in:
Post-mortem brain tissues from patients with neurodegenerative diseases vs. controls
Animal models of neurodegeneration (e.g., Alzheimer's, Parkinson's)
Different brain regions to map vulnerability patterns
Western blot has been validated for human fetal brain tissue
Cellular Distribution Studies:
Functional Correlation Analysis:
Combine ACAA1 detection with assessments of:
Peroxisomal β-oxidation activity
Very-long-chain fatty acid (VLCFA) accumulation
Reactive oxygen species (ROS) production
Neuronal survival and function
Research Applications in Specific Neurodegenerative Contexts:
Alzheimer's Disease:
Investigate whether altered ACAA1 expression contributes to lipid dysregulation
Examine relationships between peroxisomal function and amyloid processing
Study potential connections between ACAA1 activity and neuroinflammation
Parkinson's Disease:
Assess ACAA1 expression in dopaminergic neurons and its relationship to α-synuclein
Investigate whether peroxisomal dysfunction precedes or follows mitochondrial impairment
Evaluate potential neuroprotective effects of enhancing peroxisomal function
X-linked Adrenoleukodystrophy:
Use ACAA1 antibodies to study compensatory mechanisms in this peroxisomal disorder
Compare ACAA1 expression and localization in different ALD phenotypes
Investigate potential therapeutic approaches targeting peroxisomal β-oxidation
By applying these methodological approaches, researchers can gain insights into how peroxisomal dysfunction contributes to neurodegenerative processes and potentially identify new therapeutic targets for these devastating conditions.
ACAA1 antibodies can be powerful tools for investigating the complex interplay between metabolic pathways and immune responses in cancer microenvironments:
Research Approaches:
Multiplex Tissue Imaging:
Combine ACAA1 antibodies with immune cell markers in multiplex immunohistochemistry or immunofluorescence
Map spatial relationships between ACAA1-expressing cells and immune infiltrates
Correlate ACAA1 expression patterns with immune cell density and distribution
Correlation of ACAA1 with Immune Cell Populations:
Published data shows:
Metabolic Profiling:
Use ACAA1 antibodies to identify cells with active fatty acid oxidation
Compare metabolic states of tumor cells and infiltrating immune cells
Investigate how ACAA1-mediated metabolism affects immune cell function
Key Research Questions Addressable with ACAA1 Antibodies:
Metabolic Competition Hypothesis:
Does ACAA1 expression in tumor cells create metabolic competition with T cells?
Can blocking ACAA1 in tumor cells enhance T cell function by altering metabolite availability?
Immunomodulatory Metabolites:
Do metabolites generated through ACAA1-mediated β-oxidation affect T cell activation or polarization?
Can these metabolites influence regulatory T cell development in the tumor microenvironment?
Therapeutic Implications:
Would targeting ACAA1 enhance immunotherapy responses?
Can ACAA1 expression serve as a biomarker for immunotherapy responsiveness?
Experimental Design Considerations:
Cell Type-Specific Analysis:
Use laser capture microdissection followed by Western blot or proteomics
Employ single-cell techniques to correlate ACAA1 expression with cell phenotypes
Consider both tumor cells and stromal populations as ACAA1 sources
Functional Validation:
Manipulate ACAA1 expression in tumor models and assess effects on:
Immune cell infiltration
T cell subset distribution
Cytokine production
Response to immune checkpoint inhibitors
These approaches using ACAA1 antibodies can provide valuable insights into the metabolic regulation of anti-tumor immunity and potentially identify new targets for combined metabolic and immunotherapeutic interventions.
ACAA1 antibodies are poised to contribute to several emerging research areas related to metabolic reprogramming in disease contexts:
Single-Cell Metabolic Profiling:
Use ACAA1 antibodies in single-cell proteomic techniques
Combine with other metabolic enzymes to create metabolic fingerprints of individual cells
Correlate ACAA1 expression with cell states and fates in heterogeneous tissues
Identify metabolically distinct subpopulations in complex diseases
Spatial Metabolomics Integration:
Combine ACAA1 immunostaining with spatial metabolomics
Map peroxisomal metabolism in tissue microenvironments
Correlate ACAA1 distribution with metabolite gradients
Investigate metabolic zones and their relationship to disease progression
Metabolic Crosstalk in Multicellular Systems:
Investigate how ACAA1-mediated metabolism in one cell type affects neighboring cells
Study metabolic symbiosis or competition between different cell populations
Analyze how peroxisomal function in stromal cells influences parenchymal cell health
Explore intercellular metabolite transfer and its disease relevance
Post-Translational Regulation of Metabolism:
Use phospho-specific ACAA1 antibodies to study activity regulation
Investigate how post-translational modifications affect enzyme activity
Explore dynamic regulation of peroxisomal metabolism in response to stress
Map signaling pathways that modulate ACAA1 function
Therapeutic Target Validation:
Use ACAA1 antibodies to validate target engagement of experimental drugs
Monitor peroxisomal adaptation to metabolic interventions
Investigate combination approaches targeting multiple metabolic pathways
Develop companion diagnostics for metabolism-targeted therapies
These emerging applications could significantly advance our understanding of how metabolic reprogramming contributes to disease pathogenesis and potentially identify new therapeutic approaches targeting peroxisomal metabolism.
Next-generation antibody technologies offer exciting opportunities to advance ACAA1 research beyond current capabilities:
Engineered Recombinant Antibodies:
Single-chain variable fragments (scFvs) against ACAA1 for improved tissue penetration
Bispecific antibodies targeting ACAA1 and other peroxisomal proteins for co-localization studies
Humanized ACAA1 antibodies for potential therapeutic applications
Site-specific conjugation for precise labeling without compromising binding affinity
Intracellular Antibody Technologies:
Cell-permeable ACAA1 nanobodies for live-cell imaging
Intrabodies targeting ACAA1 for functional modulation in living cells
Antibody-based protein knockdown strategies (e.g., TRIM-Away) for acute ACAA1 depletion
Optogenetic antibody systems for spatiotemporal control of ACAA1 detection
Advanced Imaging Applications:
Super-resolution microscopy with ACAA1 antibodies to visualize peroxisomal subdomains
Live-cell ACAA1 tracking using split fluorescent protein complementation systems
FRET-based biosensors incorporating ACAA1 antibody fragments to monitor enzyme-substrate interactions
Expansion microscopy protocols optimized for peroxisomal proteins
Antibody-Based Proximity Labeling:
ACAA1 antibody-TurboID fusions for mapping the peroxisomal interactome
Spatially-resolved proteomic analysis of ACAA1-containing complexes
Enzyme-antibody conjugates for targeted metabolite analysis in ACAA1-rich regions
In situ detection of ACAA1-interacting proteins in specific disease contexts
Multimodal Single-Cell Analysis:
ACAA1 antibodies compatible with CITE-seq for combined transcriptome and protein analysis
Imaging mass cytometry with ACAA1 detection for high-dimensional tissue analysis
Spatial transcriptomics integrated with ACAA1 immunostaining
Multi-omic approaches correlating ACAA1 protein levels with lipidome and metabolome profiles
These next-generation technologies have the potential to transform our understanding of ACAA1 biology by providing more specific, sensitive, and functionally relevant detection methods. They will enable researchers to address previously intractable questions about peroxisomal metabolism in complex biological systems and disease states.