CD Formulation provides professional Zeta potential analysis services, specializing in the research and development of nucleic acid drugs. Our technology platform aids in gaining insight into the interfacial properties and dispersion stability of nucleic acid drugs under various conditions, thereby optimizing formulations and manufacturing processes.
Zeta potential analysis assists researchers in assessing the stability of nucleic acid drugs across different formulations and environments, a crucial consideration in formulation development. By testing the Zeta potential of nucleic acid drug particles, one can predict and control their physical-chemical behavior in biological systems, optimizing process formulations. Additionally, Zeta potential measurement reveals the electrostatic interactions between particles in different solution conditions, offering data support for improving interfacial properties and enhancing formulation quality. This analysis also helps identify the isoelectric point of the product, addressing potential particle aggregation issues to ensure product consistency and performance stability.
This involves injecting the test liquid into an electrophoretic cell with applied voltage, measuring colloidal particle migration velocity using laser doppler velocimetry, and calculating the Zeta potential from the relation between Zeta potential and mobility.
Common for detecting the Zeta potential on fibers or fillers' surfaces, this method provides a clear example of Zeta potential measurement using the streaming potential approach.
Items | Descriptions |
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Nanoparticle Carriers | Zeta potential analysis aids in understanding the surface charge of nanoparticles encapsulating nucleic acid drugs, allowing predictions of their stability and dispersibility. |
Liposome-Encapsulated Drugs | Zeta potential testing evaluates the surface properties of liposomes used as carriers, crucial for optimizing their stability. |
Polymer Complexes | For nucleic acid drugs forming complexes with positively charged polymers, Zeta potential helps determine loading efficiency and the protective role of polymers. |
Nucleic Acid Drug Solutions | For free nucleic acid drug solutions, Zeta potential testing evaluates physical properties like charge distribution and solution stability. |
Zeta potential repeatability is affected by factors such as potential size, ionic strength, light scattering intensity, turbidity, dispersion uniformity, and sedimentation effects.
Fig.1 Flow chart of nucleic acid Zeta potential analysis. (CD Formulation)
Prepare samples based on the drug's physical and chemical properties to ensure accurate Zeta potential measurements.
Perform stringent equipment calibration, including checking electrode conditions and laboratory environment stability, to ensure data reliability.
Inject samples into the analyzer post-calibration, recording and analyzing electrophoretic velocity for Zeta potential calculation.
Post-test data analysis involves calculating Zeta potential values and comparing them against models or historical data for stability assessment.
Our Zeta potential analysis platform measures particulate surface electricity, providing dispersal system data to evaluate and optimize stability. It supports various sample forms ensuring reliable charge density data across evolving formulations and processes.
Technology: Zeta potential analysis platform for analyzing dsRNAs
Journal: Frontiers in Molecular Biosciences
IF: 3.76
Published: 2017
Results:
The CPP-NA nanocomplexes, typically 100-300 nm, efficiently traverse animal cell membranes but are hindered by plant cell walls. To counteract this, CPP Tat2 paired with different NA lengths (21-mer siRNA dsRNA to ~5.5 nm) was analyzed under varying ionic strength and with phase-transfer catalysts (TBAB, TBPB) and sugars using DLS. The 21-mer siRNA:Tat2 and TBPB combo yielded 10-20 nm nanocomplexes with PDIs ~0.1. A linear relationship was seen between nanocomplex volume and NA length. Testing showed effective siRNA delivery to plant cells, achieving 75% PDS gene silencing in leaves, indicating TBPB's role in boosting siRNA entry and efficacy in seedlings.
Fig.2 Zeta (ζ) potential analysis of circular plasmid and dsRNA samples. (Pepper J T, et al., 2017)
For further details on CD Formulation's Zeta potential analysis services or to receive personalized solutions, please contact our expert team for support and assistance.
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