The measurement of a therapeutic protein or peptide release from a given dosage form is fundamental to protein or peptide drug development and quality control. In vitro release testing provides a robust and reproducible method to assess the batch-to-batch quality of protein or peptide biopharmaceuticals while maintaining consistent drug release profiles. This plays a vital role in formulation development, quality control, and stability studies. Thanks to decades of experience in protein and peptide drug analysis and testing, CD Formulation has established a complete, advanced in vitro release testing technology platform to support the testing and bioequivalence (BE) research of different protein or peptide dosage forms.
In vitro release testing (IVRT) is a key step in the development and evaluation of protein and peptide biopharmaceuticals, involving the study of the release of therapeutic proteins or peptides from different dosage forms,such as sustained-release formulations, nanoparticles, gels, etc., into suitable media in a controlled laboratory environment. The results of IVRT provide important information on the release rate and release mechanism of therapeutic proteins or peptides, and help evaluate the stability, solubility and absorption properties of the drug. Specifically, it involves 1) evaluating the performance of different formulations under standardized conditions to identify any potential problems with formulation changes, manufacturing processes or long-term stability, 2) demonstrating the safety, efficacy and quality of their products through IVRT, 3) optimizing drug formulations by studying factors that affect drug release, such as dosage form type, excipients, manufacturing process, etc., 4) providing valuable insights into the in vivo performance of protein or peptide products by simulating drug release in a controlled laboratory environment.
As experts in protein and peptide formulation development, analytical testing, and quality control, we provide unparalleled in vitro release testing services to the pharmaceutical industry. Our in vitro release testing services for protein and peptide formulations can comprehensively evaluate drug release profiles, ensure that the release rate and stability of drugs are effectively monitored, and provide important references for drug formulation optimization.
Our laboratory team has extensive experience and expertise to provide customized solutions based on the characteristics of your protein and peptide formulations. Our IVRT services obtain data on drug release in vivo or in vitro skin permeability by evaluating the rate and extent of release of proteins or peptides from drug products under simulated human physiological conditions. This can help you predict drug absorption in the human body and provide important reference information for the drug development process.
Our protein and peptide analytical testing experts can perform the following operations, including but not limited to:
According to FDA industry guidance, oral solid or liquid dosage forms are subject to in vitro dissolution testing or in vitro disintegration testing, which is equivalent to in vitro release testing for transdermal dosage forms. Our laboratory team uses advanced technology and equipment to perform IVRT testing on different types of protein or peptide drugs to obtain the rate and extent of release of the relevant proteins or peptides from drug formulations in vivo.
Fig. 1 Proteins or peptides in vitro release testing services.(CD Formulation)
Samples | Technologies | Method & Procedure |
Protein or Peptide Solid Formulations |
Disintegration testing |
USP Apparatus 1 (Basket) and Apparatus 2 (Paddle) Apparatus Methods. |
Dissolution testing |
USP (ICH harmonized) disintegration apparatus. |
|
Protein or Peptide Liquid Formulations |
Rotary paddle method in aqueous media (oral suspension) |
Our scientists put the protein/peptide suspension into a container containing a buffered salt medium (usually artificial gastric juice or artificial intestinal juice), sealed and kept at a constant temperature, sampled after a certain period of time, measured by HPLC or UPLC, and replenished the medium with fresh buffered salt. |
Protein or Peptide Transdermal Formulations |
In vitro release testing |
We use a Franz diffusion cell based on vertical diffusion cell and select synthetic membrane, tissue structure or biological sample according to the characteristics of the sample to form a diffusion system for IVRT. |
Protein or Peptide Nanoformulations |
Separation (SS) method |
Our scientists place the protein/peptide nanoformulation in a release medium maintained at a constant temperature and evaluate drug release by sampling the release medium (filtrate or supernatant) or the nanoformulation. |
Dialysis membrane (DM) method |
Our scientists place the protein/peptide nanoformulation in a dialysis bag containing the release medium (inner medium/compartment), then seal and place it in a larger container containing the release medium (outer medium/compartment), keep it sealed and at a constant temperature while stirring, take a sample after a certain period of time for determination by HPLC or UPLC, and add fresh release medium. |
|
Continuous flow (CF) method |
Our scientists use USP Instrument IV for IVRT. |
|
Protein or Peptide Aerosols |
Cascade impactor |
Cascade impactors are devices used to separate aerosol particles based on their size by collecting them on a series of plates or filters, allowing for the determination of the particle size distribution of the aerosol, as well as the amount of drug released from the aerosol form. |
Protein or peptide in vitro release testing is an essential element of quality control. Our in vitro release testing services help ensure the consistent quality and performance of your products, including:
Published Data
Technology: Accelerated in vitro release testing for a long-acting peptide-PLGA formulation
Journal: Eur J Pharm Biopharm
IF: 4.9
Published: 2021
Results:
The authors describes the development of an accelerated in vitro release testing method to predict the real-time in vitro release of a synthetic peptide from a 6-month CR PLGA implant formulation. arameters including pH, buffer species, temperature, and addition of organic co-solvents and surfactants were evaluated separately and in combination for their ability to achieve complete peptide release within 2 weeks while accurately recapitulating release rate, profile and peptide stability. The result show this optimized accelerated release method achieved complete release of the peptide load within 14-21 days and could discriminate critical differences in release behavior between different CR formulations to guide formulation and process development.
Fig. 2 In vitro release profiles comparing real-time release in PBS-TN buffer, pH 7.4 at 37 ℃ (blue) and time-scaled accelerated release in 5% THF and 5%TX combo in PBS buffer, pH 7.4 at 50 ℃ (red) for the five different peptide-PLGA formulations. (Goel M, et al., 2021)
IVRT is a key component of the analysis and characterization of protein and peptide formulations, providing predictive information about the in vivo release of the formulation. CD Formulation offers unparalleled protein/peptide IVRT services to help you design and improve the preparation process and storage conditions of the formulation. Please feel free to contact us if you are interested in our services. We will provide you with the best solutions and support.
References