slc5a12 Antibody

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Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Made-to-order (14-16 weeks)
Synonyms
slc5a12 antibody; smctnSodium-coupled monocarboxylate transporter 2 antibody; Electroneutral sodium monocarboxylate cotransporter antibody; zSMCTn antibody; Low-affinity sodium-lactate cotransporter antibody; Solute carrier family 5 member 12 antibody; zSLC5A12 antibody
Target Names
slc5a12
Uniprot No.

Target Background

Function
SLC5A12 acts as an electroneutral and low-affinity sodium (Na(+))-dependent sodium-coupled solute transporter. It catalyzes the transport across the plasma membrane of various monocarboxylates, including lactate, pyruvate, nicotinate, propionate, butyrate, and beta-D-hydroxybutyrate.
Gene References Into Functions
  1. zSMCTe, the zebrafish SLC5A8 ortholog, and zSMCTn, a novel, electroneutral SMCT (zSlc5a12), are described in PMID: 17255103.
Database Links
Protein Families
Sodium:solute symporter (SSF) (TC 2.A.21) family
Subcellular Location
Membrane; Multi-pass membrane protein.

Q&A

What are the key molecular characteristics of the SLC5A12 protein?

SLC5A12 is a multi-pass membrane protein with the following characteristics:

ParameterDetails
Full NameSolute carrier family 5 member 12
SynonymsSMCT2, Sodium-coupled monocarboxylate transporter 2, Electroneutral sodium monocarboxylate cotransporter
Calculated Molecular Weight67.6-68 kDa
Gene ID159963
Primary AccessionQ1EHB4
Cellular LocationApical cell membrane; Multi-pass membrane protein
FunctionSodium-dependent monocarboxylate transport

The protein is notably detected at the brush border membrane of the kidney and colocalizes with vimentin in Mueller cells .

How does SLC5A12 antibody specificity affect experimental outcomes?

Antibody specificity directly impacts experimental validity and reproducibility. When selecting an SLC5A12 antibody, researchers should consider the specific epitope targeted, as different antibodies recognize distinct regions of the protein. For instance, some commercial antibodies target the C-terminal region (amino acids 576-605) of human SLC5A12 , while others may target other regions. This epitope specificity influences the antibody's ability to recognize SLC5A12 in different experimental conditions, particularly when the target region may be obscured by protein folding, post-translational modifications, or protein-protein interactions. Additionally, cross-reactivity with other proteins can lead to false positive results. To ensure specificity, researchers should validate antibodies through appropriate controls and consider using multiple antibodies targeting different epitopes when possible .

What are the optimal protocols for using SLC5A12 antibodies in Western blotting?

For optimal Western blotting results with SLC5A12 antibodies, the following protocol is recommended:

  • Sample Preparation: Extract proteins using standard lysis buffers containing protease inhibitors.

  • Protein Separation: Load 20-50 μg of protein per lane on an SDS-PAGE gel (8-10% is suitable for the 68 kDa SLC5A12 protein).

  • Transfer: Use PVDF or nitrocellulose membranes with standard transfer conditions.

  • Blocking: Block with 5% non-fat milk or BSA in TBST for 1 hour at room temperature.

  • Primary Antibody Incubation: Dilute SLC5A12 antibody to approximately 1:2000 (though this may vary by manufacturer) and incubate overnight at 4°C.

  • Washing: Wash membranes 3-5 times with TBST.

  • Secondary Antibody: Incubate with appropriate HRP-conjugated secondary antibody (typically 1:1500 dilution) for 1-2 hours at room temperature.

  • Detection: Visualize using ECL substrate and imaging system.

  • Controls: Include GAPDH or other housekeeping proteins as loading controls.

This protocol has been successfully used in research studies examining SLC5A12 expression in cancer tissues compared to normal tissues .

How should researchers optimize immunohistochemistry protocols for SLC5A12 detection in tissue samples?

For effective immunohistochemical detection of SLC5A12 in tissue samples:

  • Tissue Preparation: Fix tissues in 10% neutral buffered formalin and embed in paraffin.

  • Sectioning: Cut 4-5 μm thick sections and mount on positively charged slides.

  • Deparaffinization and Rehydration: Use standard protocols.

  • Antigen Retrieval: Perform heat-induced epitope retrieval using citrate buffer (pH 6.0) or EDTA buffer (pH 9.0) for 15-20 minutes.

  • Endogenous Peroxidase Blocking: Block with 3% hydrogen peroxide for 10 minutes.

  • Protein Blocking: Use 5-10% normal serum for 30 minutes.

  • Primary Antibody: Dilute SLC5A12 antibody at 1:50-1:100 (or follow manufacturer's recommendations) and incubate overnight at 4°C.

  • Secondary Antibody: Apply appropriate biotinylated secondary antibody for 30-60 minutes.

  • Detection: Use streptavidin-HRP and DAB for visualization.

  • Counterstaining: Counterstain with hematoxylin.

  • Scoring: Employ semi-quantitative scoring methods such as the H-score, which considers both staining intensity and percentage of positive cells (scores ranging from 0-300).

This methodology has been validated in tissue microarray studies of head and neck squamous cell carcinoma, where a cutoff score of 100 was used to distinguish between low and high SLC5A12 expression .

What are the recommended approaches for quantifying SLC5A12 expression levels in different experimental systems?

Researchers can employ several complementary approaches to quantify SLC5A12 expression:

  • qRT-PCR for mRNA Quantification:

    • Design primers specific to SLC5A12 mRNA

    • Use standard qRT-PCR protocols with appropriate housekeeping genes as controls

    • Calculate relative expression using the 2^(-ΔΔCt) method

  • Western Blotting for Protein Quantification:

    • Follow the protocol outlined in FAQ 2.1

    • Use densitometry software to quantify band intensity

    • Normalize to loading controls such as GAPDH

  • Immunohistochemistry for Tissue Expression:

    • Follow the protocol in FAQ 2.2

    • Use semi-quantitative scoring methods like H-score

    • For tissue microarrays, calculate scores based on staining intensity (0-3+) multiplied by percentage of positive cells (0-100%)

  • Flow Cytometry for Cell Surface Expression:

    • Use applicable SLC5A12 antibodies at dilutions of approximately 1:10-1:50

    • Include appropriate isotype controls

    • Analyze mean fluorescence intensity to quantify expression levels

For comparative studies, it's advisable to use multiple quantification methods to corroborate findings, as has been done in studies comparing SLC5A12 expression in cancerous versus normal tissues .

How can researchers troubleshoot non-specific binding or background issues with SLC5A12 antibodies?

When encountering non-specific binding or high background with SLC5A12 antibodies, consider the following troubleshooting approaches:

  • Antibody Dilution Optimization:

    • Test a range of dilutions to find the optimal concentration

    • Western blot: Try 1:1000-1:5000 dilutions

    • IHC: Test 1:25-1:200 dilutions

  • Blocking Optimization:

    • Increase blocking time (1-2 hours at room temperature)

    • Try alternative blocking agents (5% BSA, normal serum, or commercial blockers)

    • For Western blots, add 0.1-0.5% Tween-20 to the blocking buffer

  • Washing Steps:

    • Increase washing frequency (5-6 washes) and duration (10 minutes each)

    • Ensure thorough washing between each step

  • Antibody Specificity Controls:

    • Include a negative control without primary antibody

    • Use tissues or cells known to be negative for SLC5A12

    • Consider peptide competition assays to verify specificity

  • Sample Preparation:

    • Ensure proper fixation and antigen retrieval for IHC

    • For Western blots, add additional protease inhibitors to lysates

    • Filter buffers to remove particulates that may cause background

  • Detection System:

    • Use polymer-based detection systems to reduce non-specific binding

    • Lower the concentration of secondary antibody

    • Consider different visualization methods with lower background

These approaches have been implicitly used in studies examining SLC5A12 expression in tissue samples where clear differential staining between positive and negative cells was achieved .

What are the critical quality control measures for validating SLC5A12 antibody specificity in research applications?

To ensure SLC5A12 antibody specificity and experimental validity, implement these quality control measures:

  • Positive and Negative Controls:

    • Use tissues or cell lines with known SLC5A12 expression as positive controls

    • Include negative controls (tissues or cells without SLC5A12 expression)

    • Always run a no-primary-antibody control to assess secondary antibody specificity

  • Antibody Validation by Multiple Methods:

    • Confirm protein detection by Western blot shows a band of the expected size (approximately 68 kDa)

    • Cross-validate with immunohistochemistry or immunofluorescence

    • Correlate protein detection with mRNA expression data from qRT-PCR

  • Knockdown/Knockout Validation:

    • Test the antibody in SLC5A12 knockdown or knockout models

    • Observe reduction or elimination of signal in these models

  • Peptide Competition Assays:

    • Pre-incubate the antibody with excess immunizing peptide

    • Verify signal reduction or elimination

  • Cross-Reactivity Assessment:

    • Test the antibody against closely related proteins (other SLC family members)

    • Ensure the antibody doesn't recognize unintended targets

  • Batch-to-Batch Consistency:

    • Document lot numbers and maintain records of antibody performance

    • Test new lots against previous ones to ensure consistent results

  • Literature Cross-Referencing:

    • Compare your results with published data on SLC5A12 expression patterns

    • Verify that your observations match expected tissue or cellular localization

These validation steps help ensure research reproducibility and have been implicitly applied in studies using SLC5A12 antibodies to demonstrate protein expression in different tissue types .

How can researchers effectively use SLC5A12 antibodies to study its role in cancer progression?

To investigate SLC5A12's role in cancer progression, researchers can implement the following methodological approaches:

  • Expression Analysis in Clinical Samples:

    • Perform tissue microarray immunohistochemistry (TMA-IHC) using optimized SLC5A12 antibody dilutions (typically 1:1000)

    • Compare expression between tumor and adjacent normal tissues

    • Correlate expression levels with clinical parameters (tumor stage, grade, lymph node status)

    • Use semi-quantitative scoring systems like H-score to quantify expression (0-300 scale)

  • Prognostic Value Assessment:

    • Conduct survival analysis (Kaplan-Meier) based on SLC5A12 expression levels

    • Determine appropriate cutoff points for high versus low expression (e.g., H-score of 100)

    • Perform univariate and multivariate analyses to evaluate SLC5A12 as an independent prognostic factor

  • Functional Studies in Cancer Cell Lines:

    • Use SLC5A12 antibodies for screening cell lines to identify appropriate models

    • Develop overexpression or knockdown models to manipulate SLC5A12 levels

    • Analyze effects on proliferation, migration, invasion, and metabolism

    • Use Western blotting with the antibody to confirm expression changes

  • Metabolic Function Investigation:

    • Study SLC5A12's role in lactate transport and tumor metabolism

    • Combine antibody-based detection with functional assays measuring lactate uptake

    • Investigate downstream metabolic pathways affected by SLC5A12 modulation

What are the considerations for using SLC5A12 antibodies in co-immunoprecipitation experiments?

When designing co-immunoprecipitation (Co-IP) experiments with SLC5A12 antibodies, researchers should consider these technical aspects:

  • Antibody Selection:

    • Choose antibodies specifically validated for immunoprecipitation

    • Consider using different antibodies for IP and Western blot detection

    • Ensure the epitope recognized isn't masked by protein-protein interactions

  • Membrane Protein Considerations:

    • Since SLC5A12 is a multi-pass membrane protein, use lysis buffers with mild detergents (0.5-1% NP-40, Triton X-100, or digitonin)

    • Include protease inhibitors to prevent degradation

    • Consider using crosslinking agents to stabilize transient interactions

  • Protocol Optimization:

    • Pre-clear lysates with protein A/G beads to reduce non-specific binding

    • Optimize antibody-to-lysate ratios (typically 2-5 μg antibody per mg protein)

    • Extend incubation times (overnight at 4°C) to capture low-affinity interactions

  • Controls:

    • Include an isotype-matched control antibody IP

    • Perform reverse Co-IP with antibodies against suspected interaction partners

    • Include input samples (typically 5-10% of IP material) for comparison

  • Detection Methods:

    • Use clean detection antibodies that recognize different epitopes than the IP antibody

    • Consider mass spectrometry for unbiased identification of interaction partners

    • Validate novel interactions using alternative methods (proximity ligation assay, FRET)

While specific Co-IP protocols for SLC5A12 aren't detailed in the provided search results, these considerations represent standard approaches for membrane protein Co-IP experiments that would be applicable to SLC5A12 research .

How can researchers correlate SLC5A12 protein expression with functional transport activity?

To establish correlations between SLC5A12 protein expression and its functional transport activity:

  • Quantitative Expression Analysis:

    • Use Western blotting with SLC5A12 antibodies to quantify protein levels

    • Normalize expression to appropriate loading controls

    • Consider subcellular fractionation to specifically measure membrane-localized protein

  • Transport Activity Assays:

    • Measure uptake of radiolabeled or fluorescently-labeled monocarboxylates (lactate, pyruvate)

    • Assess sodium dependency by performing assays in sodium-free medium

    • Determine kinetic parameters (Km, Vmax) to characterize transport efficiency

  • Experimental Models:

    • Use cell lines with varying levels of endogenous SLC5A12 expression

    • Create stable cell lines with controlled SLC5A12 expression using transfection or viral transduction

    • Employ siRNA or CRISPR-Cas9 to generate knockdown/knockout models

  • Correlation Analysis:

    • Plot transport activity against protein expression levels

    • Perform regression analysis to determine relationship strength

    • Account for confounding factors such as expression of other transporters

  • Functional Validation:

    • Use specific inhibitors to confirm transport is SLC5A12-dependent

    • Perform site-directed mutagenesis of key residues and assess effects on transport

    • Combine with intracellular pH measurements to confirm functional activity

This integrated approach allows researchers to establish whether transport activity scales linearly with protein expression or if other factors (post-translational modifications, protein interactions) modulate SLC5A12 function, as suggested by studies of its transport capabilities .

How can SLC5A12 antibodies be utilized in studying metabolic reprogramming in the tumor microenvironment?

SLC5A12 antibodies can be powerful tools for investigating metabolic reprogramming in the tumor microenvironment through these methodological approaches:

  • Spatial Expression Analysis:

    • Use multiplex immunohistochemistry with SLC5A12 antibodies combined with markers for different cell types (cancer cells, immune cells, fibroblasts)

    • Map SLC5A12 expression patterns relative to hypoxic regions (using HIF-1α or pimonidazole staining)

    • Correlate with expression of other metabolic transporters and enzymes

  • Metabolic Zonation Studies:

    • Analyze SLC5A12 expression gradients from tumor core to periphery

    • Correlate with lactate concentration gradients

    • Investigate relationships between SLC5A12-expressing cells and vascular structures

  • Immune Cell Metabolism:

    • Examine SLC5A12 expression in tumor-infiltrating immune cells

    • Study how SLC5A12-mediated lactate transport affects immune cell function and polarization

    • Combine with functional immunological assays to link transport to immune responses

  • Therapeutic Response Monitoring:

    • Assess changes in SLC5A12 expression following treatments targeting cancer metabolism

    • Evaluate whether SLC5A12 expression predicts response to metabolic therapies

    • Determine if therapeutic resistance correlates with altered SLC5A12 expression

  • In Vitro Co-Culture Systems:

    • Establish co-cultures of cancer cells with stromal or immune cells

    • Use SLC5A12 antibodies to track expression changes in different cell populations

    • Manipulate SLC5A12 expression to assess intercellular metabolic dependencies

This approach builds on the finding that SLC5A12 is overexpressed in certain cancers and may contribute to their progression, suggesting its role in metabolic adaptation within the tumor microenvironment .

What techniques can be employed to study post-translational modifications of SLC5A12 using available antibodies?

To investigate post-translational modifications (PTMs) of SLC5A12, researchers can employ these specialized techniques with available antibodies:

  • PTM-Specific Western Blotting:

    • Use general SLC5A12 antibodies to immunoprecipitate the protein

    • Probe with antibodies specific for common PTMs (phosphorylation, glycosylation, ubiquitination)

    • Alternatively, use PTM-specific enrichment before Western blotting with SLC5A12 antibodies

  • 2D Gel Electrophoresis:

    • Separate proteins by isoelectric point and molecular weight

    • Detect SLC5A12 using specific antibodies

    • Identify charge variants suggesting phosphorylation or other modifications

  • Mass Spectrometry-Based Approaches:

    • Immunoprecipitate SLC5A12 using validated antibodies

    • Perform tryptic digestion and analyze by liquid chromatography-mass spectrometry

    • Identify specific modification sites and quantify modification stoichiometry

  • Enzyme Treatment Studies:

    • Treat lysates with phosphatases, glycosidases, or deubiquitinases

    • Observe mobility shifts by Western blotting with SLC5A12 antibodies

    • Confirm PTM types based on enzymatic removal

  • Site-Directed Mutagenesis Validation:

    • Mutate predicted PTM sites and express in cell models

    • Compare PTM patterns between wild-type and mutant proteins using SLC5A12 antibodies

    • Correlate PTM changes with functional alterations in transport activity

  • Proximity Ligation Assays:

    • Combine SLC5A12 antibodies with antibodies against PTM machinery

    • Detect and visualize proximity suggesting active modification

While the provided search results don't specifically address PTMs of SLC5A12, these methodologies represent standard approaches that would be applicable given the protein's calculated molecular weight of 68 kDa and its membrane localization .

How should researchers design experiments to investigate the relationship between SLC5A12 expression and cancer therapeutic resistance?

To investigate SLC5A12's potential role in cancer therapeutic resistance, researchers should implement the following experimental design:

  • Clinical Sample Analysis:

    • Compare SLC5A12 expression in paired pre- and post-treatment tumor samples using immunohistochemistry

    • Correlate expression levels with treatment response and patient outcomes

    • Perform multivariate analysis to determine if SLC5A12 is an independent predictor of resistance

  • Cell Line Models of Acquired Resistance:

    • Develop resistant cell lines through chronic exposure to relevant therapeutics

    • Quantify SLC5A12 expression changes using Western blotting and qRT-PCR

    • Determine if SLC5A12 upregulation precedes or follows resistance development

  • Functional Validation Studies:

    • Manipulate SLC5A12 expression through overexpression or knockdown approaches

    • Assess changes in drug sensitivity using cell viability assays

    • Evaluate whether SLC5A12 modulation can reverse established resistance

  • Mechanistic Investigations:

    • Study how SLC5A12-mediated metabolite transport affects drug uptake, efflux, or metabolism

    • Investigate potential interactions between SLC5A12 and known drug resistance mechanisms

    • Analyze how intracellular pH changes mediated by SLC5A12 might affect drug efficacy

  • Combination Therapy Approaches:

    • Test if SLC5A12 inhibition sensitizes resistant cells to standard therapies

    • Develop rational combination strategies based on metabolic dependencies

    • Use SLC5A12 antibodies to monitor target engagement in these studies

This comprehensive approach builds on the established prognostic significance of SLC5A12 in cancer, particularly its association with aggressive disease features in head and neck squamous cell carcinoma, suggesting its potential involvement in treatment resistance mechanisms .

What are the optimal storage and handling conditions for maintaining SLC5A12 antibody efficacy?

To maximize the shelf life and performance of SLC5A12 antibodies, adhere to these storage and handling recommendations:

Storage ParameterRecommendation
Long-term Storage-20°C (most common)
Working Solution4°C for up to 2 weeks
Buffer CompositionPBS with 0.02-0.09% sodium azide and 50% glycerol (pH 7.3)
Freeze-Thaw CyclesMinimize; aliquot upon receipt
Aliquot SizePrepare single-use aliquots (typically 10-20 μl)
BSA AdditionSome preparations contain 0.1% BSA for stability
SterilityUse sterile technique when handling
Light ExposureProtect fluorophore-conjugated antibodies from light
TransportationOn ice or cold packs
Quality ControlCheck for precipitates before use; centrifuge if necessary

Following these guidelines will help maintain antibody performance over time. Manufacturers typically guarantee stability for one year after shipment when stored properly. Some suppliers note that aliquoting is unnecessary for -20°C storage, but it remains a good practice to minimize freeze-thaw cycles .

How should researchers interpret conflicting results when using different SLC5A12 antibodies?

When faced with discrepancies between results obtained using different SLC5A12 antibodies, researchers should follow this systematic approach to interpretation and resolution:

  • Epitope Consideration:

    • Compare the epitopes recognized by each antibody (e.g., C-terminal region vs. other domains)

    • Consider whether protein conformation, post-translational modifications, or protein interactions might differentially affect epitope accessibility

  • Antibody Validation Status:

    • Review validation data for each antibody (Western blot, IHC, knockout controls)

    • Prioritize results from antibodies with more extensive validation

    • Consider antibody specificity metrics (monospecificity vs. cross-reactivity potential)

  • Technical Factors:

    • Assess whether methodological differences explain the discrepancies

    • Consider fixation methods, antigen retrieval protocols, detection systems

    • Evaluate whether antibody concentrations were optimized for each application

  • Biological Explanations:

    • Consider whether results reflect genuine biological variability (isoforms, splice variants)

    • Investigate if discrepancies correlate with functional differences

    • Determine if different antibodies detect distinct populations of the protein

  • Resolution Strategies:

    • Perform additional validation experiments (knockdown/knockout controls)

    • Use complementary techniques (mRNA analysis, mass spectrometry)

    • Consider using antibody cocktails or sequential staining approaches

    • Consult literature for similar discrepancies and their resolution

This approach has been implicitly used in studies of SLC5A12 expression in cancer tissues, where protein detection is often validated through multiple methods to ensure consistency in findings regarding its prognostic significance .

What methodological adaptations are required when using SLC5A12 antibodies across different species samples?

When applying SLC5A12 antibodies across different species, researchers must consider these methodological adaptations:

  • Species Reactivity Verification:

    • Review manufacturer's data on confirmed species reactivity (human, mouse, rat)

    • Perform preliminary validation experiments in each species before full-scale studies

    • Include appropriate positive controls from each species

  • Epitope Conservation Analysis:

    • Compare the antibody epitope sequence across species using sequence alignment tools

    • Higher sequence conservation generally predicts better cross-reactivity

    • For antibodies targeting the C-terminal region (576-605 aa in humans), check specific conservation of this region

  • Dilution Optimization:

    • Optimize antibody dilutions separately for each species

    • Generally, more concentrated antibody may be needed for less conserved targets

    • Perform dilution series experiments (e.g., 1:100, 1:500, 1:1000, 1:5000)

  • Protocol Adjustments:

    • Modify fixation times based on tissue characteristics of different species

    • Adjust antigen retrieval conditions (buffer type, pH, duration)

    • Consider species-specific blocking reagents to minimize background

  • Detection System Considerations:

    • Select secondary antibodies specifically validated for the species of primary antibody host

    • Use detection systems with appropriate sensitivity for expected expression levels

    • Consider signal amplification for low abundance targets in certain species

How does SLC5A12 expression in cancer compare to other monocarboxylate transporters, and what methodological approaches best highlight these differences?

To effectively compare SLC5A12 with other monocarboxylate transporters (MCTs) in cancer research, implement these methodological approaches:

  • Comparative Expression Analysis:

    • Perform multiplex IHC or immunofluorescence using antibodies against SLC5A12 and other MCTs (MCT1, MCT4)

    • Analyze co-expression patterns at single-cell resolution

    • Use parallel Western blots with carefully titrated antibodies for semi-quantitative comparison

    • Validate with mRNA expression analysis (qRT-PCR, RNA-seq)

  • Subcellular Localization Comparison:

    • Use confocal microscopy with differentially labeled antibodies to compare subcellular distribution

    • Perform subcellular fractionation followed by Western blotting

    • Compare membrane vs. cytoplasmic expression patterns

  • Functional Differentiation:

    • Design transport assays that distinguish between SLC5A12's electroneutral sodium-coupled transport and the proton-coupled transport of MCT family members

    • Compare substrate specificity and transport kinetics

    • Assess differential responses to inhibitors

  • Clinical Correlation Methodologies:

    • Analyze prognostic significance of each transporter individually and in combination

    • Develop multi-marker scoring systems incorporating multiple transporters

    • Correlate with metabolic parameters and imaging features (e.g., FDG-PET uptake)

  • Transcriptional Regulation Studies:

    • Compare promoter activities and transcription factor binding

    • Analyze epigenetic regulation differences

    • Assess responses to microenvironmental stresses (hypoxia, acidosis)

This comprehensive approach would build upon findings that SLC5A12 is overexpressed in head and neck squamous cell carcinoma and associated with poor prognosis, placing these observations in the broader context of cancer metabolism and highlighting the unique aspects of SLC5A12 compared to other transporters .

What are the current technological limitations in SLC5A12 antibody-based research, and how might they be overcome?

Current technological limitations in SLC5A12 antibody research and potential solutions include:

  • Limited Epitope Coverage:

    • Limitation: Most commercial antibodies target restricted regions, potentially missing conformational epitopes or isoforms

    • Solution: Develop antibody panels targeting multiple distinct epitopes across the protein

    • Approach: Use synthetic peptides from different domains for immunization or phage display technology for diverse epitope recognition

  • Specificity Challenges:

    • Limitation: Cross-reactivity with related SLC family members

    • Solution: Employ advanced validation using knockout models and orthogonal detection methods

    • Approach: Develop CRISPR-Cas9 SLC5A12 knockout cell lines as definitive negative controls

  • Quantification Standardization:

    • Limitation: Variable scoring methods and thresholds across studies

    • Solution: Establish standardized quantification protocols and reference standards

    • Approach: Develop calibrated reference materials with known SLC5A12 concentrations

  • Live-Cell Applications:

    • Limitation: Current antibodies primarily suited for fixed samples

    • Solution: Develop non-disruptive labeling approaches for live-cell imaging

    • Approach: Create minimally disruptive nanobodies or aptamers against extracellular domains

  • Functional Correlation:

    • Limitation: Difficulty connecting expression levels to transport activity

    • Solution: Develop activity-based probes linked to antibody detection

    • Approach: Create conditional reporters that activate upon substrate transport

  • Multiplexing Capabilities:

    • Limitation: Challenges in studying SLC5A12 alongside multiple markers

    • Solution: Implement advanced multiplexing technologies

    • Approach: Adopt cyclic immunofluorescence, mass cytometry, or spatial transcriptomics approaches

Addressing these limitations would advance our understanding of SLC5A12 biology and its role in disease processes, building upon current research showing its prognostic significance in cancer and potential as a therapeutic target .

How can SLC5A12 antibody-based research contribute to the development of novel cancer therapeutic strategies?

SLC5A12 antibody-based research can catalyze cancer therapeutic development through these methodological pathways:

  • Target Validation and Patient Stratification:

    • Use immunohistochemistry with validated SLC5A12 antibodies to screen patient cohorts

    • Correlate expression with treatment outcomes to identify responsive subpopulations

    • Develop companion diagnostic assays with standardized scoring systems

    • Example methodology: TMA-IHC with semi-quantitative H-scoring (0-300 scale) to stratify patients based on expression levels

  • Therapeutic Antibody Development:

    • Utilize research antibodies to identify accessible epitopes on extracellular domains

    • Screen for antibodies that inhibit transport function

    • Develop antibody-drug conjugates targeting SLC5A12-expressing cells

    • Methodology: Flow cytometry with live cells to confirm surface binding and internalization potential

  • Metabolic Vulnerability Identification:

    • Combine SLC5A12 expression profiling with metabolomic analysis

    • Identify synthetic lethal interactions with other metabolic pathways

    • Map expression in relation to tumor hypoxia and acidosis

    • Approach: Multiplex immunohistochemistry combined with metabolic imaging

  • Therapeutic Response Monitoring:

    • Track changes in SLC5A12 expression during treatment

    • Identify mechanisms of adaptation and resistance

    • Develop dynamic biomarkers based on expression patterns

    • Method: Serial biopsies with quantitative immunohistochemistry or liquid biopsy approaches

  • Combination Therapy Rational Design:

    • Map SLC5A12 expression in relation to immune cell infiltrates

    • Investigate how lactate transport inhibition affects immunotherapy response

    • Develop regimens targeting both SLC5A12 and complementary pathways

    • Technique: Spatial profiling with multiplex immunohistochemistry

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