HRE Dual Reporter Vector

The HIF signaling pathway (Hypoxia-Inducible Factor, a family of oxygen-sensitive transcription factors) senses low oxygen levels (hypoxia) to regulate cellular adaptation through HIF transcription factors, which bind Hypoxia Response Elements (HREs) to activate genes involved in metabolism, angiogenesis, and survival, with dysregulation contributing to cancer progression and ischemia. HIF-1alpha stabilizes under hypoxia or chemical mimics (CoCl2), translocates to the nucleus, and drives HRE-dependent transcription. The HRE Dual Reporter Vector (HRDV) is a DNA-based dual-luciferase system engineered to monitor this HIF/HRE-dependent transcriptional activity in mammalian cells. It comprises an HRE Reporter Mix, in which Firefly luciferase is driven by multimerized Hypoxia Response Elements and co-formulated with a constitutive Renilla luciferase plasmid for internal normalization, and a Negative Control Reporter Mix lacking HRE binding sites to define non-inducible background and pathway specificity. Firefly luciferase provides a strong ATP-dependent signal proportional to HIF-driven transcription, while Renilla luciferase offers an ATP-independent internal control, enabling accurate quantification of hypoxia pathway activity suitable for pathway studies, genetic perturbation experiments, and screening of small-molecule or biologic modulators.