Nebulabio provide a cutting-edge, high-throughput Cell-Free Protein Synthesis (CFPS) service, enabling the rapid production of functional proteins without the use of living cells. This platform bypasses the time-consuming and often cumbersome steps of cloning, transformation, and cell culture associated with traditional in vivo expression systems. Our service is designed for researchers and developers who require speed, flexibility, and the ability to express challenging proteins that are toxic, insoluble, or require non-natural components. By leveraging optimized E. coli, wheat germ, or mammalian cell lysates, we offer a versatile solution for producing proteins for functional studies, high-throughput screening, antibody generation, and early-stage therapeutic candidate evaluation. From DNA template to purified protein in a matter of hours to days, we deliver a robust and scalable alternative to accelerate your research and development pipeline.
☞Introduction to Large-Scale Protein Production
Large-scale protein production refers to the industrial-level biomanufacturing of recombinant proteins, moving beyond laboratory milligram scales to produce hundreds of grams, kilograms, or more. This transition is not merely a matter of increasing volume but involves a fundamental shift in approach, requiring specialized expertise in:
● Strain/Cell Line Development: Selecting and optimizing a host organism (e.g., E. coli, yeast, CHO, HEK293) for high-density growth and high-yield protein expression under industrial fermentation conditions.
● Process Intensification & Scale-Up: Systematically translating a benchtop process to large-scale bioreactors (from 10L to 10,000L+), while maintaining critical process parameters (CPPs) to ensure consistent product quality attributes (CQAs). This includes optimizing feeding strategies, oxygen transfer, and mixing dynamics.
● Robust Downstream Processing: Designing and executing scalable purification trains that efficiently handle large volumes of crude harvest while removing host cell impurities, aggregates, and ensuring viral clearance. This involves column chromatography at pilot or production scale, tangential flow filtration (TFF), and formulation.
● Regulatory Compliance & Quality by Design (QbD): Developing processes with regulatory submission in mind, incorporating QbD principles, and generating comprehensive data packages to support Investigational New Drug (IND) and Biologics License Application (BLA) filings.
| ☎ +86-15801534258 | ✉ info@nebulabio.cn | Contact Us ☜☜ |
☞Applications of Large-Scale Protein Production
● Therapeutic Protein & Antibody Manufacturing: Production of monoclonal antibodies (mAbs), bispecific antibodies, Fc-fusion proteins, enzymes, hormones (e.g., insulin, growth factors), and cytokines for use in clinical trials and commercial therapeutics.
● Vaccine Antigen Production: Large-scale expression and purification of viral subunits, recombinant proteins, or virus-like particles (VLPs) for vaccine development.
● Diagnostic Reagent Manufacturing: Supply of bulk quantities of purified antigens, calibrated antibodies, and engineered proteins for the production of immunoassay kits (ELISA, lateral flow) and diagnostic platforms.
● Enzymes for Industrial & Research Use: Production of restriction enzymes, polymerases (e.g., Taq), and other specialty enzymes used in molecular biology, diagnostics, and industrial biocatalysis.
● Structural Biology & Crystallography: Providing milligram-to-gram quantities of highly pure, homogeneous protein for demanding techniques like X-ray crystallography and cryo-electron microscopy (cryo-EM).
☞Large-Scale Protein Production Process
Our integrated, stage-gated process ensures technical success and regulatory readiness at every step.
①Process Development & Optimization: We take your research-grade expression system and develop a robust, scalable manufacturing process. This includes media/feed optimization, defining harvest conditions, and establishing a purification protocol (typically involving capture, intermediate purification, and polishing steps) using scale-down models. ②Master Cell Bank (MCB) Generation: A cGMP-compliant Master Cell Bank is produced from the selected high-producing cell line, fully characterized for identity, purity, and stability, providing the seed stock for all future manufacturing runs. ③Upstream Processing (USP): ● Inoculum Train: The MCB vial is thawed and expanded through a series of shake flasks and seed bioreactors to generate sufficient biomass. ● Production Bioreactor: Cells are transferred to the large-scale production bioreactor. A controlled fed-batch process is executed, meticulously monitoring and controlling parameters like pH, dissolved oxygen (DO), temperature, and nutrient feed to maximize protein titer and quality. ④Harvest & Clarification: The cell culture is harvested. For microbial systems, cells are disrupted if the product is intracellular. The harvest undergoes depth filtration and/or centrifugation to remove cells and cellular debris, producing a clarified harvest containing the target protein. ⑤Downstream Processing (DSP): ● Capture: The clarified harvest is loaded onto a large-scale chromatography column (e.g., Protein A for antibodies, affinity, or ion-exchange) for initial purification and volume reduction. ● Viral Inactivation/Clearance: Critical for mammalian processes, steps like low-pH hold or solvent/detergent treatment are integrated. ● Polishing: Subsequent chromatographic steps (e.g., ion-exchange, hydrophobic interaction) remove remaining impurities, aggregates, and process-related contaminants. ● Viral Filtration: A dedicated nanofiltration step provides a robust viral clearance safeguard. ● Ultrafiltration/Diafiltration (UF/DF): The purified protein is concentrated and buffer-exchanged into its final formulation buffer using TFF systems. ⑥Formulation, Fill & Lyophilization: The drug substance may be formulated with excipients for stability. We offer sterile filling into vials or syringes and lyophilization (freeze-drying) services as required. ⑦Comprehensive Analytics & Quality Control (QC): In parallel, a dedicated QC team performs extensive release testing on the drug substance and drug product, including assays for identity, purity, potency, sterility, and endotoxin levels. |
☞Nebulabio Service Process
Our client-centric project management ensures transparency, alignment, and successful execution from concept to bulk product.
Process Steps Description:
● Feasibility & Project Launch: We conduct a detailed analysis of your molecule and requirements. A joint project team is formed, and a comprehensive project plan with timelines, deliverables, and governance is established.
● Process Development & Scale-Up: Our development team optimizes and scales your process, transferring the knowledge to the manufacturing team. This stage includes risk assessment (FMEA) and defining CPPs/CQAs.
● cGMP Cell Banking & Preparation: A cGMP MCB is generated and released. All raw materials are qualified for cGMP use.
● Engineering & Qualification Runs:An engineering run demonstrates the process at scale. This is followed by formal Process Performance Qualification (PPQ) runs to validate that the manufacturing process consistently produces product meeting pre-determined specifications.
● cGMP Manufacturing Campaign: The validated process is executed to produce your clinical or commercial batch under strict cGMP conditions, with full documentation and batch record review.
● QC Release & Stability: The batch undergoes full QC release testing. We can also initiate formal stability studies to support shelf-life claims.
● Delivery & Regulatory Support: The released drug substance/product is delivered. We provide a comprehensive regulatory package, including the Drug Master File (DMF) or relevant sections for your IND/BLA, detailing the manufacturing process and controls.
☞Your Partner in Scalable Biomanufacturing
From process intensification to cGMP-compliant commercial supply, we provide the expertise, capacity, and quality systems to turn your promising biologic into a scalable reality. Partner with us to de-risk your development pathway and secure a reliable supply chain for your most critical programs.
Contact Nebulabio to discuss your large-scale production needs and request a project proposal.
For more information, please contact us at info@nebulabio.cn or +86-15801534258.
