The reliability and robustness of analytical methods are critical factors determining the success of preclinical advancement in early vaccine development. We offer specialized solutions for the most common CMC challenges, ensuring your product quality and safety meet all early development requirements.
We help clients establish a highly robust and reproducible analytical method validation data package, suitable for early product development and QC, ensuring data reliability and accelerating entry into preclinical studies.
For novel vaccines (e.g., mRNA, viral vectors), we provide innovative and specific analytical methods to accurately measure complex structures, impurities, and trace potency, overcoming traditional analytical bottlenecks.
We assist in formulating scientific stability testing protocols and rigorous batch release criteria. We offer accelerated, intermediate, and long-term stability studies to ensure product quality and shelf life.
Confirmation of vaccine structure, antigen specificity, protein/nucleic acid sequence, etc., using methods like peptide mapping, mass spectrometry, SEC-HPLC, and ELISA.
Detection of process impurities, host cell proteins (HCP), residual nucleic acids, aggregates, and fragmentation. Using methods like SDS-PAGE, Western Blot, CE, and HPLC.
Sterility testing, mycoplasma detection, endotoxin testing, and viral contamination screening to ensure product biosafety.
Measurement of the vaccine's ability to activate the immune system. Includes cell-based assays (e.g., VNT), ELISA binding tests, and neutralizing antibody titer analysis.
Monitoring of quality attributes under long-term, accelerated, and stress conditions (light, temperature, humidity) to determine storage conditions and shelf life.
Single-dose/repeat-dose toxicity studies, local reactivity studies, hypersensitivity, and systemic reaction assessments, adhering to high-standard laboratory practices.
Analysis of the absorption, distribution, metabolism, and excretion (ADME) and pharmacokinetics (PK) of the vaccine or its vector for dose design.
Assessment of the vaccine's potential impact on fertility and embryonic development, especially for vaccines intended for specific populations.
Our team adheres to strict internal quality standards and a rigorous Quality Management System, ensuring the scientific integrity and reliability of all experimental methods and data, providing a solid basis for clients' early decision-making.
Exclusively offering seamless integration of In Vitro analysis and In Vivo PK/Toxicology assessment services, greatly simplifying the supply chain and accelerating project timelines.
Utilizing automated platforms and optimized SOPs to ensure high efficiency in method development and qualification, shortening the client's vaccine R&D cycle.
Possessing leading analytical technologies on innovative platforms such as mRNA, viral vectors, and peptide vaccines, offering customized solutions.
Background
A study aimed to develop and analyze mannosylated lipid nanoparticles (MLNPs) as delivery systems for a self-amplifying RNA (SAM) vaccine encoding RSV F protein, given LNPs' role in protecting RNA and MLNs' potential to target APCs via mannose receptors.
Solution
MLNs with mono- (M1) to tetrasaccharide (M4) mannans were formulated (2%/0.3% PEG). Analyses included particle size/PDI (Zetasizer), RNA encapsulation (Ribogreen), antigen integrity (agarose gel), mannan exposure (ConA assay), and in vivo immunogenicity (ELISA for IgG/IgG1/IgG2a in BALB/c mice via IM/ID routes).
Result
MLNs had acceptable size (<200nm, PDI<0.2), >70% RNA encapsulation, and intact SAM. ConA binding confirmed mannan exposure (enhanced at 0.3% PEG). M2 (disaccharide) MLNs boosted IgG/IgG2a vs LNPs; 0.3% PEG improved immunogenicity. IM/ID routes worked, supporting MLN use for RNA vaccine development.

All analytical method development and validation strictly follows our highest internal quality and robustness standards, ensuring all data is reliable and reproducible for preclinical trials and early CMC stages.
Yes. We have extensive experience and specialized platforms for nucleic acid vaccines (e.g., measuring mRNA integrity, LNP encapsulation rate) and viral vector vaccines (e.g., VNT potency assay, full/empty capsid ratio analysis), offering fully customized solutions.
Absolutely. Our service model is highly flexible. Clients can select individual in vitro or in vivo assessment items based on their specific needs, or choose the full integrated solution. All in vivo studies adhere to high-standard laboratory practices.
Standard method validation (e.g., HPLC purity, ELISA identity) is typically completed within 6-8 weeks, but complex biological potency assays may require 10-12 weeks. The exact timeline is determined by the method complexity and the status of client-provided samples.
We primarily rely on cell-based assays (e.g., Virus Neutralization Test VNT, Plaque Reduction Neutralization Test PRNT), receptor-binding ELISAs, SPR, or BLI (Bio-Layer Interferometry) technology. We customize the most relevant and sensitive biological activity assay method based on the vaccine's mechanism of action and antigen characteristics.
Don't let inadequate analytical data stall your regulatory filings or clinical trials. Partner with the analytical experts at Creative Biolabs to receive professional support and secure the robust analytical solutions needed for successful vaccine qualification!
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