Description

FOXO4-DRI Peptide for Advanced Cellular Senescence and FOXO4-p53 Research.

FOXO4-DRI Peptide (FOXO4 D-Retro-Inverso) is a synthetic peptide developed to investigate the molecular mechanisms regulating cellular senescence through disruption of the interaction between FOXO4 and p53. Constructed using D-amino acids in a retro-inverso configuration, FOXO4-DRI demonstrates enhanced resistance to enzymatic degradation while preserving the spatial orientation necessary for experimental protein-binding studies.

Originally described in peer-reviewed senescence research, FOXO4-DRI has become an important laboratory reagent for investigating senescent cell biology, apoptosis signaling pathways, nuclear protein interactions, and age-associated cellular mechanisms. Researchers utilize this peptide to study transcription factor regulation, DNA damage responses, stress-induced signaling, and intracellular protein localization within controlled laboratory environments.

Experimental investigations commonly examine the consequences of disrupting FOXO4-mediated p53 sequestration, enabling mechanistic analysis of apoptotic signaling, mitochondrial responses, chromatin remodeling, and transcriptional regulation in senescent cells. Additional studies evaluate downstream molecular events involving caspase activation, cellular stress pathways, and senescence-associated secretory phenotype (SASP) signaling.

Each batch is synthesized using advanced solid-phase peptide synthesis, purified through high-performance liquid chromatography, verified by mass spectrometry, and supplied as a stable lyophilized peptide with a comprehensive Certificate of Analysis to ensure reproducible laboratory performance.

For research use only. Not intended for human consumption or clinical use.

Key Research Highlights

• Synthetic D-retro-inverso peptide with enhanced proteolytic stability
• Designed for FOXO4-p53 interaction research
• Extensively studied in cellular senescence biology
• Investigated in apoptosis signaling laboratory models
• Suitable for protein-protein interaction studies
• Evaluated in transcription factor and nuclear signaling research
• Frequently utilized in aging biology and molecular gerontology
• High-purity research-grade lyophilized peptide
• Certificate of Analysis (COA) supplied with every batch
• Manufactured under stringent analytical quality standards
• Excellent batch-to-batch reproducibility
• Intended exclusively for laboratory investigations

Why Researchers Choose This Product

• ≥99% purity verified by HPLC and mass spectrometry
• Verified D-retro-inverso peptide sequence
• Stable lyophilized formulation for laboratory storage
• Comprehensive Certificate of Analysis included
• Structural identity verified for every production batch
• Reliable analytical consistency across manufacturing lots
• Suitable for molecular biology and senescence research
• Manufactured using rigorous peptide synthesis protocols
• Trusted by biotechnology, pharmaceutical, and academic laboratories
• Designed exclusively for scientific research applications

Research Applications

Cellular Senescence Research

FOXO4-DRI Peptide is extensively utilized to investigate molecular mechanisms governing cellular senescence, senescence-associated signaling pathways, and intracellular protein regulation.

FOXO4-p53 Interaction Studies

Researchers employ FOXO4-DRI to examine the interaction between FOXO4 transcription factors and p53, including nuclear localization, binding dynamics, and protein complex formation.

Apoptosis Signaling

Experimental models incorporate FOXO4-DRI to investigate intrinsic apoptotic pathways, mitochondrial signaling, caspase activation, and stress-response mechanisms.

Aging Biology

Scientists utilize FOXO4-DRI in laboratory investigations examining age-associated cellular changes, genomic stability, oxidative stress responses, and senescence-associated molecular pathways.

Molecular Cell Biology

Research applications include studies of transcription factor biology, DNA damage responses, chromatin organization, nuclear protein trafficking, and intracellular signaling networks.

Protein Biochemistry

FOXO4-DRI serves as a valuable research reagent for protein-binding assays, peptide engineering, structure-function analysis, molecular interaction studies, and biochemical characterization.

Product Specifications

Mechanism of Action

FOXO4-DRI Peptide is a synthetic D-retro-inverso peptide engineered to disrupt the molecular interaction between forkhead box O4 (FOXO4) and the tumor suppressor protein p53, a protein complex that has been extensively investigated in studies of cellular senescence. The peptide reproduces the three-dimensional orientation of the native FOXO4 interaction domain while incorporating D-amino acids arranged in reverse sequence order, significantly increasing resistance to proteolytic degradation without compromising target recognition.

Published laboratory research indicates that FOXO4 can associate with p53 within the nuclei of senescent cells, contributing to nuclear retention of p53 and maintenance of the senescent cellular phenotype. FOXO4-DRI functions as a competitive interaction peptide by binding to the p53 interaction interface, thereby disrupting the endogenous FOXO4-p53 complex. This displacement alters intracellular p53 localization and enables investigation of downstream molecular events associated with programmed cell death pathways in senescent cellular models.

Researchers utilize FOXO4-DRI to examine signaling mechanisms involving p53, MDM2, BAX, BCL-2 family proteins, mitochondrial membrane integrity, caspase activation, and intrinsic apoptosis pathways. Additional investigations evaluate transcriptional regulation, DNA damage response signaling, chromatin remodeling, oxidative stress responses, and senescence-associated secretory phenotype (SASP) regulation following disruption of FOXO4-mediated protein interactions.

The D-retro-inverso configuration provides enhanced enzymatic stability compared with conventional L-amino acid peptides, making FOXO4-DRI particularly suitable for extended in vitro incubation studies and controlled preclinical investigations requiring prolonged peptide integrity. Researchers also employ the peptide to investigate protein-protein interaction kinetics, transcription factor regulation, cellular aging mechanisms, and molecular pathways associated with senescent cell biology.

Its precisely engineered structure, verified sequence integrity, and extensive characterization in peer-reviewed scientific literature have established FOXO4-DRI Peptide as a valuable research reagent for molecular biology, cellular senescence, protein biochemistry, aging research, pharmacology, and life science laboratories investigating FOXO4-p53 signaling and senescence-associated molecular mechanisms.

For research use only. Not intended for human consumption or clinical use.