PFKFB1 Antibody

Introduction to PFKFB1 Antibody

PFKFB1 Antibody is a specialized immunological reagent designed to recognize and bind to the 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 1 (PFKFB1) protein. This bifunctional enzyme plays a crucial role in regulating glycolysis, making the antibody an essential tool for researchers investigating cellular metabolism . Multiple formulations of PFKFB1 Antibody are commercially available, with most being produced in rabbit hosts as polyclonal antibodies that offer high specificity for their target .

These antibodies enable researchers to detect endogenous levels of PFKFB1 protein in various biological samples, providing critical insights into metabolic pathways that are often dysregulated in cancer and other diseases. The antibodies are validated for use in multiple experimental techniques, including Western blotting, Enzyme-Linked Immunosorbent Assay (ELISA), and immunofluorescence applications .

The development of highly specific PFKFB1 antibodies has significantly advanced research in the field of metabolic regulation, allowing scientists to better understand how changes in PFKFB1 expression and activity contribute to normal physiology and pathological conditions. As research tools, these antibodies provide the sensitivity and specificity needed to detect even subtle changes in PFKFB1 levels, making them invaluable for studies investigating the complex regulatory networks controlling cellular energy metabolism.

Metabolic Significance and Regulation

PFKFB1 serves as a master regulator of glycolysis through its control of fructose-2,6-bisphosphate levels. This metabolite acts as a potent allosteric activator of 6-phosphofructo-1-kinase, which catalyzes a rate-limiting step in the glycolytic pathway . By regulating fructose-2,6-bisphosphate concentration, PFKFB1 effectively controls the balance between glycolysis (glucose breakdown) and gluconeogenesis (glucose synthesis), making it crucial for maintaining proper glucose levels under various physiological conditions.

The activity of PFKFB1 is tightly regulated through post-translational modifications, particularly phosphorylation. When phosphorylated, PFKFB1 exhibits reduced kinase activity, resulting in decreased fructose-2,6-bisphosphate production and subsequently decreased glycolytic flux . This regulation allows cells to rapidly adjust their metabolic activity in response to changing energy demands or environmental conditions.

Role in Disease Pathogenesis

Given its central role in regulating glycolysis, PFKFB1 has significant implications in diseases characterized by dysregulated metabolism, particularly cancer. Cancer cells often exhibit enhanced glycolysis even in the presence of oxygen (the Warburg effect), which supports their rapid proliferation and growth . By targeting PFKFB1 and related enzymes, researchers can gain valuable insights into the metabolic reprogramming that occurs during tumorigenesis and potentially identify new therapeutic strategies.

Additionally, as a regulator of glucose metabolism, PFKFB1 is implicated in metabolic disorders such as diabetes and obesity. Research utilizing PFKFB1 antibodies has helped elucidate how alterations in PFKFB1 expression or activity contribute to these conditions, providing a foundation for the development of novel metabolic-targeted therapies.

PFKFB1/PFKFB4 Polyclonal Antibody (PACO01324)

This antibody from Assay Genie is raised in rabbits and targets both PFKFB1 and PFKFB4 proteins. It recognizes an internal region of human PFKFB1/PFKFB4 and demonstrates reactivity with human, mouse, and rat samples . The antibody is supplied in liquid form, containing PBS with 50% glycerol, 0.5% BSA, and 0.02% sodium azide, providing stability and extended shelf life .

PFKFB1 Antibody (ABIN6257912)

This C-terminal targeting antibody from Antibodies-online is a rabbit polyclonal antibody that specifically detects endogenous levels of total PFKFB1. It is validated for Western Blotting, ELISA, Immunofluorescence, and Immunocytochemistry applications . The antibody is supplied in phosphate-buffered saline with pH 7.4, containing 150 mM NaCl, 0.02% sodium azide, and 50% glycerol for optimal stability .

PFKFB1 Rabbit Polyclonal Antibody (TA357983)

OriGene's PFKFB1 antibody targets the C-terminal region of the protein. It is affinity-purified and supplied in 1x PBS buffer with 0.09% sodium azide and 2% sucrose . This antibody shows reactivity with human samples and is expected to cross-react with PFKFB1 from various species including cow, dog, guinea pig, horse, mouse, rabbit, rat, and zebrafish, with varying degrees of homology .

Species Cross-Reactivity and Homology

PFKFB1 antibodies demonstrate varying degrees of cross-reactivity with PFKFB1 proteins from different species. The OriGene antibody (TA357983) provides detailed homology information, showing 100% homology with cow, dog, guinea pig, horse, human, and rat PFKFB1; 93% homology with mouse and rabbit PFKFB1; and 79% homology with zebrafish PFKFB1 .

This cross-reactivity information is valuable for researchers working with different model organisms, as it indicates the potential utility of these antibodies across various experimental systems. For instance, the high degree of conservation in the C-terminal region across mammalian species suggests that antibodies targeting this region may be particularly useful for comparative studies examining PFKFB1 function across different model organisms.

Western Blotting Applications

All three PFKFB1 antibodies are validated for Western Blotting (WB), a fundamental technique for protein detection and semi-quantitative analysis . In this application, PFKFB1 antibodies allow researchers to identify the presence of PFKFB1 protein in cell or tissue lysates, assess its expression levels under different experimental conditions, and determine its molecular weight (approximately 47-52 kDa).

For optimal Western Blotting results, manufacturers recommend specific dilution ranges: 1:500-1:2000 for the PACO01324 antibody and 1:500-1:1000 for the ABIN6257912 antibody . These dilutions balance signal intensity with background minimization, ensuring clear and specific detection of PFKFB1 protein. Western Blotting with PFKFB1 antibodies has been instrumental in studies examining changes in PFKFB1 expression in response to metabolic stress, hypoxia, and other physiological or pathological conditions.

ELISA and Quantitative Analysis

Both the Assay Genie and Antibodies-online PFKFB1 antibodies are validated for Enzyme-Linked Immunosorbent Assay (ELISA) applications . ELISA allows for quantitative measurement of PFKFB1 protein levels in various biological samples, including cell lysates, tissue extracts, and potentially biological fluids.

For peptide ELISA, the ABIN6257912 antibody has a recommended dilution range of 1:20000-1:40000, reflecting its high sensitivity in this application . The ability to quantitatively measure PFKFB1 levels through ELISA provides researchers with a powerful tool for high-throughput screening and precise quantification of changes in PFKFB1 expression under different experimental conditions.

Immunofluorescence and Cellular Localization

The Antibodies-online PFKFB1 antibody (ABIN6257912) is validated for Immunofluorescence (IF) and Immunocytochemistry (ICC) applications, with a recommended dilution range of 1:100-1:500 . These techniques allow researchers to visualize the cellular and subcellular localization of PFKFB1 protein, providing valuable insights into its spatial distribution within cells.

Immunofluorescence studies with PFKFB1 antibodies have revealed important information about the subcellular localization of PFKFB1 under different metabolic conditions, helping to elucidate how its spatial regulation contributes to its function in controlling glycolytic flux. This spatial information complements the quantitative data obtained from Western Blotting and ELISA, providing a more comprehensive understanding of PFKFB1 biology.

Experimental Optimization

For optimal results with PFKFB1 antibodies, researchers should consider several factors:

1. Determine the appropriate dilution for each specific application through titration experiments

2. Include positive and negative controls to validate antibody specificity

3. Optimize protocol conditions (incubation times, temperatures, blocking reagents) for each experimental system

4. Be aware of potential cross-reactivity with related proteins, particularly PFKFB4, which shares sequence homology with PFKFB1

For applications requiring high specificity between PFKFB1 and PFKFB4, researchers should select antibodies that specifically target unique regions of PFKFB1 not conserved in PFKFB4, or consider using antibodies like PACO01324 that recognize both proteins when broader detection is desired .

Cancer Metabolism Studies

PFKFB1 antibodies have been instrumental in advancing our understanding of cancer metabolism. By enabling the detection and quantification of PFKFB1 in cancer cells and tissues, these antibodies have helped researchers investigate how alterations in glycolytic regulation contribute to the Warburg effect and tumor progression .

The ability to visualize PFKFB1 localization through immunofluorescence has provided insights into its spatial regulation in cancer cells, while quantitative analyses through Western Blotting and ELISA have revealed changes in its expression levels across different cancer types and stages. These studies contribute to the identification of potential therapeutic targets within the glycolytic pathway.

Metabolic Disease Research

As a key regulator of glucose metabolism, PFKFB1 is implicated in various metabolic disorders, including diabetes and obesity. PFKFB1 antibodies enable researchers to study the expression and regulation of this enzyme in different metabolic states, potentially uncovering novel mechanisms underlying these conditions .

Research utilizing PFKFB1 antibodies has helped elucidate how alterations in PFKFB1 activity contribute to dysregulated glucose homeostasis in metabolic diseases, providing a foundation for the development of metabolism-targeted therapeutic strategies. The ability to detect and quantify PFKFB1 in various tissues, particularly the liver where it plays a crucial role in glucose regulation, makes these antibodies essential tools in metabolic disease research.

Emerging Applications and Future Perspectives

As techniques for spatial biology and single-cell analysis continue to advance, PFKFB1 antibodies are likely to find new applications in visualizing metabolic heterogeneity at unprecedented resolution. Integration of PFKFB1 detection with emerging technologies such as spatial transcriptomics and multiplexed imaging could provide new insights into how metabolic regulation varies across different cell types and microenvironmental conditions.

Additionally, as research into metabolic targeting therapies expands, PFKFB1 antibodies will continue to serve as crucial tools for validation studies, biomarker discovery, and mechanism investigations. Their ability to specifically detect changes in PFKFB1 expression or localization in response to therapeutic interventions makes them valuable assets in translational research aimed at developing novel treatments for cancer and metabolic diseases.