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EXP002016

Paper

A New Amphipathic, Amino-Acid-Pairing (AAP) Peptide as siRNA Delivery Carrier: Physicochemical Characterization and in Vitro Uptake (2012)

Peptide

C6

Sequence: Ac-RLLRLLLRLWRRLLRLLR-NH2

RNA

siRNA

All experiment fields

Experiment Id EXP002016
Paper A New Amphipathic, Amino-Acid-Pairing (AAP) Peptide as siRNA Delivery Carrier: Physicochemical Chara
Peptide C6
Delivery Success Class no
In Vivo Flag no
Uptake Confirmed yes
Label Confidence high
In Vitro Functional Effect no
Endosomal Escape Evidence
Peptide Concentration ~0.75–2.0 µM (with 50 nM siRNA at MR 15–40); also used 4–40 µM in characterization
Rna Concentration 50 nM (cell uptake); 100 nM (DLS/zeta); 6 µM (ITC); 0.3 µg per lane (gel)
Mixing Ratio peptide:siRNA molar ratio 15:1, 25:1, 40:1 (uptake); stability starts ~10:1
Formulation Format noncovalent peptide–siRNA complexes / coassemblies
Formulation Components C6 peptide + siRNA (GAPDH or eGFP); prepared in RNase-free water; cells treated in Opti-MEM
Size Nm 50.00
Zeta Mv 30.00
Model Scope in_vitro
Model Type in vitro
Cell Lines Or Primary Cells CHO-K1 (Chinese hamster ovary)
Animal Model
Administration Route
Output Type uptake / localization
Output Value Higher siRNA uptake vs Lipofectamine 2000 (FACS); cytoplasmic/perinuclear punctate Cy3 signal by fluorescence microscopy
Output Units
Output Notes Uptake increases with peptide:siRNA molar ratio; punctate perinuclear distribution suggests endocytosis; no in vitro gene knockdown reported
Toxicity Notes No significant toxicity; cell viability not reduced below ~85% up to MR 40; Lipofectamine showed higher toxicity
Curation Notes