Back to browse

EXP001864

Paper

Insight into the Cellular Uptake Mechanism of a Secondary Amphipathic Cell-Penetrating Peptide for siRNA Delivery (2010)

Peptide

CADY

Sequence: Ac-GLWRALWRLLRSLWRLLWRA-cya

RNA

siRNA

All experiment fields

Experiment Id EXP001864
Paper Insight into the Cellular Uptake Mechanism of a Secondary Amphipathic Cell-Penetrating Peptide for s
Peptide CADY
Delivery Success Class no
In Vivo Flag no
Uptake Confirmed no
Label Confidence medium
In Vitro Functional Effect no
Endosomal Escape Evidence yes
Peptide Concentration
Rna Concentration
Mixing Ratio CADY:siRNA molar ratios studied 10:1–80:1 (complex formation 30 min at 37°C; key structural transition optimal around 40:1 in CD)
Formulation Format Noncovalent CADY/siRNA nanoparticle complex
Formulation Components CADY peptide (1 mg/mL stock) incubated with siRNA to form stable complexes; studied with lipid vesicles (DOPC/DOPG etc.) and heparan sulfate proteoglycan competition
Size Nm
Zeta Mv
Model Scope in_vitro
Model Type in vitro
Cell Lines Or Primary Cells
Animal Model
Administration Route
Output Type Mechanistic/biophysical characterization of CADY/siRNA membrane interaction (CD, fluorescence, monolayer insertion, gel shift with HSPG)
Output Value CADY binds siRNA tightly (Kd ~47 nM) and undergoes random-coil→α-helix transition; CADY/siRNA interacts strongly with phospholipids; uptake proposed to be endosomal-pathway independent
Output Units
Output Notes This paper focuses on uptake mechanism and membrane interaction; it does not present in vitro gene knockdown or in vivo efficacy endpoints.
Toxicity Notes
Curation Notes