Quantify Phosphoinositides with Confidence for More Reliable Cell Signalling Research
Phosphoinositides (PIPs) are low-abundance but highly dynamic signalling lipids that regulate essential cellular processes including PI3K/AKT signalling, membrane trafficking, autophagy and cytoskeletal remodelling. Even subtle changes in PIP abundance can profoundly influence disease mechanisms, making accurate quantification critical for cancer, neuroscience, immunology and metabolic research.
Key Challenges
Studying phosphoinositides remains technically demanding.
Researchers often face:
- Extremely low endogenous lipid abundance
- Rapid turnover following cellular stimulation
- Difficult lipid extraction and sample preparation
- Limited access to specialised mass spectrometry platforms
- Variability between analytical methods that complicates data comparison
Without robust quantification tools, detecting biologically meaningful changes in phosphoinositide signalling becomes challenging, particularly when studying PI3K activation, phosphatase activity or endosomal lipid metabolism.
Overview
The Echelon PIP Mass ELISAs provide sensitive competitive ELISA assays specifically developed to quantify major phosphoinositide species directly from biological samples.
Each assay targets a distinct phosphoinositide, enabling researchers to monitor signalling pathways with greater confidence while avoiding the complexity and cost of LC-MS workflows.
| Product Name | Reference | Target | Typical Applications |
|---|---|---|---|
| PIP3 Mass ELISA Kit | K-2500S | PI(3,4,5)P₃ | PI3K activation, AKT signalling, cancer biology, growth factor signalling |
| PI(4,5)P2 Mass ELISA Kit | K-4500 | PI(4,5)Pâ‚‚ | PLC signalling, cytoskeleton dynamics, membrane signalling |
| PI(3)P Mass ELISA Kit | K-3300 | PI3P | Endosomal trafficking, autophagy, VPS34 studies |
| PI(4)P Mass ELISA Kit | K-4000K | PI4P | Golgi biology, membrane transport, lipid metabolism |
| PI(3,4)P2 Mass ELISA Kit | K-3800 | PI(3,4)Pâ‚‚ | PI3K/PTEN signalling, receptor activation, phosphatase research |
Key Benefits
- Quantify low-abundance phosphoinositides with high sensitivity
- Compatible with lipid extracts from cultured cells and biological samples
- Standardised ELISA workflow requiring no specialised lipidomics expertise
- Excellent reproducibility for longitudinal and comparative studies
- Ideal for investigating PI3K signalling, phosphatase activity, membrane trafficking and disease-associated lipid remodelling
- Rapid implementation into existing cell signalling workflows
Figure 1: The PI(3)P Mass ELISA Kit (K-3300) assay is a competitive ELISA in which the signal is inversely proportional to the amount of PI(3)P present. Once PI(3)P has been extracted from cellular samples, it is incubated with the PI(3)P Detector, then added to the PI(3)P Detection Plate for competitive binding. A peroxidase-linked secondary detection reagent and colorimetric substrate is used to detect PI(3)P detector protein bound to the plate. The colorimetric signal is read at 450 nm absorbance. The optical density is inversely proportional to the amount of PI(3)P extracted from cells. The assay is sensitive to about 1 pmol PI(3)P.
Quick takeaway
Unlike generic lipid quantification approaches, Echelon's phosphoinositide assays are developed specifically for signalling lipid research. The assays are designed to provide sensitive, reproducible measurements that support studies of PI3K biology, membrane dynamics and phosphoinositide metabolism across a wide range of disease models.
Accelerate Your Phosphoinositides Research
Whether you are investigating PI3K signalling, membrane trafficking or lipid metabolism, Echelon's PIP Mass ELISA assays provide a practical, reproducible solution for quantitative phosphoinositide analysis. Contact our product manager team for more information.
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References
Article content created by Tebubio using courtesy materials provided by Echelon Biosciences .