Custom Monoclonal Antibody Preparation Service

Our integrated platforms support custom mAb development for a wide range of downstream applications:

✅ Western Blot (WB) — Reliable detection of denatured proteins
✅ ELISA & Sandwich Assays — High-sensitivity quantification and pairing screening
✅ Flow Cytometry — Cell surface and intracellular antigen detection
✅ Immunofluorescence (IF) & IHC — Tissue and cellular localization
✅ Neutralization & Functional Assays — Blocking, inhibition, and cell-based validation
✅ Biomarker Validation & Drug Discovery — Early-stage target validation and lead candidate screening

Our end‑to‑end custom monoclonal antibody workflow includes antigen design, animal immunization, hybridoma generation or B‑cell screening, subcloning, purification, and application‑specific validation. We also offer recombinant expression, affinity ranking, and full quality control to ensure batch‑to‑batch consistency.

Service Overview

This custom monoclonal antibody preparation service supports both exploratory basic research and long‑term diagnostic assay development. We customize every step — from immunogen design to screening strategy — based on your target biology and intended application.

Our focus is on delivering antibodies with high specificity, sensitivity, proper epitope recognition, species cross‑reactivity, native protein binding, low background, and consistent batch‑to‑batch reproducibility.

Three core technology platforms — Hybridoma Technology, Single B‑Cell Screening, and Phage Display — enable us to handle conventional antigens, complex membrane proteins, weakly immunogenic targets, and even fully human antibody discovery.

Technology Platforms

🔬 I. Hybridoma Technology — Classic Hybridoma · Industry Gold Standard

⭐ Stable & Reliable · Scalable Production · Diagnostic Grade

Classical hybridoma technology is the most stable and widely used mAb production platform. Through animal immunization, cell fusion, HAT selection, and multiple rounds of subcloning, we generate immortalized cell lines that stably secrete specific antibodies.

✅ Key AdvantagesExcellent batch-to-batch consistency; long-term cryopreservation; high antibody yield for industrial production.

🎯 ApplicationsRecombinant proteins, peptides, bacterial/viral antigens, and conventional immunogens.

📦 DeliverablesHybridoma cell lines, purified antibodies (1-50mg), isotyping report, QC data.

⏱ Timeline3–6 months (including immunization, fusion, cloning, and validation).

⚡ II. Single B‑Cell Screening — Fusion-Free · Native Pairing · Ultra-Fast

✨ Fast & Efficient · Preserves Native Pairing · Low-Immunogenicity

Single B‑cell screening is a next-generation rapid antibody discovery platform that bypasses cell fusion. Antigen-specific B cells are directly isolated from spleen or peripheral blood of immunized animals, followed by single-cell RT-PCR, antibody gene amplification, and expression validation.

✅ Key Advantages8–12 week timeline; captures rare clones; preserves natural affinity maturation.

🎯 ApplicationsLow-immunogenicity antigens, conformation-sensitive epitopes, membrane proteins, rapid antibody development.

📦 DeliverablesAntibody gene sequences, recombinant antibody samples, ELISA/functional validation data.

⏱ Timeline2–3 months, approximately 30% faster than hybridoma.

🧬 III. Phage Display Technology — Fully Human · In Vitro Panning · Breaks Immune Tolerance

🧪 Fully Human Antibodies · High-Throughput · Overcomes Immunogenicity

Phage display technology constructs large-scale antibody libraries (10⁹–10¹¹ variants) and performs multiple rounds of antigen panning to enrich specific clones. This completely in vitro platform bypasses animal immune limitations and enables rapid discovery of fully human antibodies.

✅ Key AdvantagesFully in vitro selection; obtains fully human antibodies; overcomes immune tolerance; ideal for toxic/conserved antigens.

🎯 ApplicationsGPCRs, difficult-to-express targets, haptens/small molecules, antibody drug discovery.

📦 DeliverablesPhage clones, scFv/Fab/IgG sequences, small-scale expressed antibodies, affinity ranking.

⏱ Timeline10–14 weeks (from library panning to functional validation).

Compatible Antigen Types

We develop custom monoclonal antibodies against a broad range of antigens, including but not limited to:

Recombinant proteins, synthetic peptides, fusion proteins, membrane proteins, viral proteins, bacterial antigens, toxin‑associated proteins, cytokines and growth factors, phosphorylated peptides, haptens, and small molecules.

If you do not have qualified antigens, our team offers upstream antigen design, expression, and purification services to support your custom mAb project from start to finish.

Project Deliverables

Deliverables are tailored to your project scope and may include:

• Positive hybridoma cell lines or antibody gene sequences
• Purified monoclonal antibodies (small to large scale)
• Antibody isotyping reports and QC data (ELISA, SDS‑PAGE, endotoxin)
• Raw screening data and validation reports
• Hybridoma cryopreservation samples
• Antibody sequencing and recombinant expression materials

Standard Project Timeline

Timelines vary based on antigen immunogenicity, screening complexity, and validation criteria.

Complete custom mAb development projects typically take 3–6 months from initiation to delivery of validated clones. Complex targets or additional functional validation may extend the timeline.

Quality Control & Risk Management

Antibody generation is a biological process with inherent variability. To maximize success rates for your custom monoclonal antibody preparation project, we implement rigorous quality checkpoints:

• Antigen integrity and immunogenicity assessment
• Serum titer monitoring during immunization
• Screening threshold optimization
• Clone stability and monoclonality verification
• Microbial contamination testing
• Final purified product QC (purity, concentration, activity)

For potential risks, we maintain contingency plans including alternative immunogen design, screening optimization, booster immunizations, and antibody engineering.

Application Areas

Our custom monoclonal antibody preparation service supports a wide range of research and development fields:

Oncology · Immunology · Infectious Diseases · Neuroscience · Stem Cell Biology · Biomarker Discovery · Diagnostic Assay Development · Drug Target Validation · Vaccine Development

From target validation to diagnostic kit development, we provide antibodies tailored to your specific application.

Collaboration Advantages

Why choose BioCrest Sci for custom monoclonal antibody development?

• 1. Research‑Driven Custom Design — No template workflows. Each project is assessed based on antigen characteristics, target biology, and downstream use.
• 2. Flexible R&D Models — Support for standard mAb production and customized workflows for challenging targets.
• 3. Application‑Oriented Validation — Screening aligned with your actual experimental system to reduce downstream development time.
• 4. Full‑Stage Scalability — From early discovery to large‑scale production, with flexible plans adjusted to your phase and scale.

Frequently Asked Questions

• Q1: What materials are needed to start a custom mAb project?
  Purified proteins, peptide antigens, DNA expression vectors, or complete antigen sequence information are sufficient. If you do not have qualified antigens, we offer upstream antigen preparation services.
• Q2: Can you develop monoclonal antibodies against membrane protein targets?
  Yes. We use specialized strategies including peptide immunization, extracellular domain recombinant protein immunization, and whole-cell immunization to overcome membrane protein challenges.
• Q3: Do you offer antibody sequencing services?
  Yes. After obtaining positive clones, we can perform full-length antibody sequencing for recombinant expression, engineering, and long-term cell line preservation.
• Q4: Can you customize antibody validation for specific experimental applications?
  Yes. We design dedicated validation workflows for WB, ELISA, IHC, IF, flow cytometry, neutralization assays, and more.
• Q5: Do you offer antibody conjugation or labeling services?
  Yes. We provide custom antibody labeling services including HRP, biotin, FITC, PE, Alexa Fluor, and other conjugates upon request.