| Code | CSB-RA008836A253phHU |
| Size | US$210 |
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| Application | Recommended Dilution |
|---|---|
| WB | 1:500-1:5000 |
| IHC | 1:50-1:200 |
FOXO3 belongs to the forkhead family of transcription factors, playing a central role in regulating cellular responses to oxidative stress, metabolism, and apoptosis. Phosphorylation at serine 253 represents a critical regulatory event, as this modification by Akt kinase promotes FOXO3 nuclear exclusion and subsequent cytoplasmic sequestration, effectively suppressing its tumor suppressor functions. Detecting this specific phosphorylation state provides researchers with direct insight into PI3K/Akt pathway activity and its downstream effects on cell survival decisions.
This recombinant monoclonal antibody, generated against a synthetic phosphopeptide encompassing the S253 site of human FOXO3, offers the reproducibility and sequence-defined specificity that phospho-specific detection demands. Because the antibody sequence is fixed at the genetic level, you can expect consistent performance across experiments and over time, eliminating the lot-to-lot variability that can confound longitudinal studies of signaling dynamics.
Validation studies confirm reliable detection in Western blot applications, where the antibody recognizes a band at the predicted 97 kDa molecular weight in HeLa, 293, and A549 whole cell lysates. This performance across multiple human cell lines demonstrates robust utility for studying FOXO3 phosphorylation in diverse cellular contexts. For tissue-based investigations, immunohistochemistry validation in paraffin-embedded human breast cancer and endometrial cancer sections shows clear staining patterns, supporting applications in clinical specimen analysis and tumor biology research.
Whether you are investigating insulin signaling, characterizing stress response pathways, or exploring FOXO3 dysregulation in cancer progression, this antibody provides a dependable tool for monitoring this functionally significant phosphorylation event in your epigenetics and nuclear signaling research.
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