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EXP001532

Paper

An Amphipathic Structure of a Dipropylglycine-Containing Helical Peptide with Sufficient Length Enables Safe and Effective Intracellular siRNA Delivery (2023)

Peptide

Pep5

Sequence: Ac-Tyr-Lys-Leu-Dpg-Leu-Lys-Leu-Dpg-Leu-NH2

RNA

siRNA

All experiment fields

Experiment Id EXP001532
Paper An Amphipathic Structure of a Dipropylglycine-Containing Helical Peptide with Sufficient Length Enab
Peptide Pep5
Delivery Success Class no
In Vivo Flag no
Uptake Confirmed yes
Label Confidence high
In Vitro Functional Effect no
Endosomal Escape Evidence
Peptide Concentration 8.4 µM (for N/P=4 with 100 nM siRNA)
Rna Concentration 100 nM (Luc or Scr siRNA); 100 nM Alexa488-siRNA for uptake assay
Mixing Ratio N/P = 4 (amino/guanidino groups : siRNA phosphates)
Formulation Format electrostatic peptide/siRNA complexes (CPP nanoparticles)
Formulation Components Pep5 + siRNA (Luc or Scr) / Alexa488-siRNA (uptake)
Size Nm
Zeta Mv
Model Scope in_vitro
Model Type in vitro
Cell Lines Or Primary Cells Huh-7-Luc (luciferase-expressing human hepatoma cells; 10% FBS media)
Animal Model
Administration Route
Output Type Uptake (flow cytometry + fluorescence microscopy) and RNAi (luciferase assay, 24 h)
Output Value Luciferase signal decreased for both Luc and Scr siRNA with increasing N/P (toxicity-dominated; not specific knockdown).
Output Units
Output Notes Very low Alexa488-siRNA uptake (flow cytometry low; almost no microscopy signal). RNAi measured in 10% FBS at 24 h; Lipofectamine 3000 ineffective under these conditions.
Toxicity Notes Severe cytotoxicity at N/P=4 and N/P=8 (24 h); luciferase reduced regardless of siRNA sequence.
Curation Notes