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InVivoMAb™ Plus: Precision In Vivo Antibodies for Animal Models by abinScience

Release date: 2025-05-16  View count: 1571

In vivo antibodies are critical tools for studying disease mechanisms in animal models — from tumor immunotherapy and immune checkpoint blockade to autoimmune disease intervention and cell depletion studies. However, conventional hybridoma-derived antibodies often produce inconsistent results due to Fc heterogeneity, high endotoxin levels, and batch-to-batch variability. For background on monoclonal vs polyclonal antibody production differences, see our selection guide.

abinScience's InVivoMAb™ Plus series addresses these limitations with recombinant in vivo antibodies engineered for animal model research. The portfolio covers 400+ antibodies across immune checkpoints (PD-1/PD-L1, CTLA-4, LAG-3, TIM-3, TIGIT), cell depletion (CD4, CD8, NK1.1, Ly6G), cytokine neutralization (IFN-γ, IL-2, TNF-α), and T-cell activation (CD3, CD28, CD40).

InVivoMAb™ Plus: Key Advantages Over Conventional In Vivo Antibodies

Feature InVivoMAb™ Plus Conventional Hybridoma
Immunogenicity Low — reduced neutralizing Ab induction, prolonged in vivo half-life Variable — Fc heterogeneity can trigger host immune response
Batch consistency High — recombinant production from defined sequence Variable — hybridoma genetic drift over passages
Purity >98% Typically 90–95%
Endotoxin level ≤1 EU/mg (LAL-verified per lot) Often 5–50 EU/mg without additional purification
Carrier/preservatives None — carrier-free, preservative-free, pathogen-free May contain BSA, sodium azide, or other stabilizers
Cross-platform use Compatible with ELISA, flow cytometry, and in vivo dosing May require buffer exchange for in vitro applications

In Vivo Validation: Anti-PD-1 & Anti-PD-L1 in Syngeneic Tumor Models

The abinScience team conducted in vivo anti-tumor efficacy studies to validate the InVivoMAb™ Plus checkpoint antibodies in standard syngeneic mouse models.

Anti-PD-1: B16-F10 Melanoma Model (C57BL/6)

Parameter Details
Antibodies tested MS870209 (clone 29F.1A12) & MS870039 (clone RMP1-14)
Model C57BL/6 mice, B16-F10 melanoma s.c. inoculation
Route Intraperitoneal injection at predetermined doses
Result Dose-dependent tumor growth suppression, significantly outperforming isotype control
Anti-tumor effect of InVivoMAb Plus Anti-PD-1 antibodies in C57BL/6 B16-F10 melanoma model showing dose-dependent tumor growth suppression

Fig 1. Tumor growth curves in C57BL/6 mice bearing B16-F10 melanoma treated with InVivoMAb™ Plus Anti-PD-1 antibodies (29F.1A12 and RMP1-14) vs. isotype control.

Anti-PD-L1: CT26 Colon Cancer Model (BALB/c)

Parameter Details
Antibody tested MV974029 (clone 10F.9G2)
Model BALB/c mice, CT26 colon carcinoma s.c. inoculation
Result Significant tumor growth suppression vs. isotype control
Anti-tumor effect of InVivoMAb Plus Anti-PD-L1 antibody 10F.9G2 in BALB/c CT26 colon cancer model

Fig 2. Tumor growth curves in BALB/c mice bearing CT26 colon carcinoma treated with InVivoMAb™ Plus Anti-PD-L1 antibody (10F.9G2) vs. isotype control.

ELISA Binding Validation

To confirm target specificity and binding capacity, the InVivoMAb™ Plus PD-1 and PD-L1 antibodies were tested by direct ELISA against their respective recombinant antigens.

ELISA binding curve for InVivoMAb Plus Anti-PD-1 antibody 29F.1A12 showing high-specificity antigen recognition

Fig 3. Anti-PD-1 (29F.1A12) ELISA binding to mouse PD-1 antigen.

ELISA binding curve for InVivoMAb Plus Anti-PD-L1 antibody 10F.9G2 showing stable antigen binding

Fig 4. Anti-PD-L1 (10F.9G2) ELISA binding to mouse PD-L1 antigen.

Application Areas

Research Area Representative Clones Application
Immune checkpoint blockade Anti-PD-1 (29F.1A12, RMP1-14), Anti-PD-L1 (10F.9G2), Anti-CTLA-4 (9D9) Tumor immunology, syngeneic tumor models
Cell depletion Anti-CD4 (GK1.5), Anti-CD8a (2.43), Anti-NK1.1 (PK136), Anti-Ly6G (1A8) Immune cell subset ablation in vivo
Cytokine neutralization Anti-IFN-γ (XMG1.2), Anti-IL-2 (JES6-1A12) Signaling pathway studies, autoimmune models
T-cell co-stimulation Anti-CD40 (FGK45), Anti-4-1BB (3H3) Immune activation, combination therapy studies
Fc-mediated function blocking Anti-CD16/CD32 (2.4G2) Fc receptor blocking before flow cytometry staining

InVivoMAb™ Plus Product List

All antibodies below are carrier-free, preservative-free, endotoxin ≤1 EU/mg, purity >98%. Available in mg to gram quantities. For isotype control selection guidance, see our controls guide.

Checkpoint & Functional Antibodies

Cat. No. Product Name
MS870209 InVivo Plus Anti-Mouse PD-1 Antibody (29F.1A12)
MS870039 InVivo Plus Anti-Mouse PD-1 Antibody (RMP1-14)
MV974029 InVivo Plus Anti-Mouse PD-L1 Antibody (10F.9G2)
MV974049 InVivo Plus Anti-Mouse PD-L1 Antibody (10F.9G2)
MB651209 InVivo Plus Anti-Mouse CTLA-4 Antibody (9D9)
MC336209 InVivo Plus Anti-Mouse 4-1BB/CD137 Antibody (3H3)
MB782109 InVivo Plus Anti-Mouse CD40 Antibody (FGK45)
MB823109 InVivo Plus Anti-Mouse IFNAR1 Antibody (MAR1-5A3)

Cell Depletion Antibodies

Cat. No. Product Name
MF998109 InVivo Plus Anti-Mouse CD4 Antibody (GK1.5)
MF815109 InVivo Plus Anti-Mouse CD8a Antibody (2.43)
MC598109 InVivo Plus Anti-Mouse NK1.1 Antibody (PK136)
MP500109 InVivo Plus Anti-Mouse Ly6G Antibody (1A8)
MP370207 Anti-Mouse TCR αβ Antibody (H57-597)

Isotype Controls

Cat. No. Product Name
TF690109 InVivo Plus Rabbit IgG Isotype Control (HyHEL-10)
RF533109 InVivo Plus Rat IgG2a Isotype Control (SPE-7)
RF974109 InVivo Plus Rat IgG2b Isotype Control (LTF-2)
MF974109 InVivo Plus Mouse IgG2b Isotype Control (KLH)
MV080309 InVivo Plus Mouse IgG1 Isotype Control (IS5-21F5)
MF974309 InVivo Plus Mouse IgG2b Isotype Control (IS6-11E5.11)
MF974409 InVivo Plus Mouse IgG2b Isotype Control (GC198)
MV080409 InVivo Plus Mouse IgG1 Isotype Control (X40)
MV080609 InVivo Plus Mouse IgG1 Isotype Control (Ci4)

Frequently Asked Questions

How do I choose the right in vivo antibody for my animal model?

Prioritize products with low endotoxin (≤1 EU/mg), high purity (>95%), documented batch consistency, and no carrier proteins or preservatives. Confirm that the antibody clone has been validated in the same species and strain as your model. Check our endotoxin guide for recommended levels by application.

Can these antibodies be used for in vitro assays as well?

Yes. InVivoMAb™ Plus antibodies are compatible with ELISA, flow cytometry, and functional cell-based assays. The carrier-free, low-endotoxin formulation is suitable for both in vivo dosing and in vitro applications without buffer exchange.

Which isotype control should I use?

Match the isotype and host species of your functional antibody. For example, if your anti-PD-L1 is rat IgG2b, use a rat IgG2b isotype control (e.g., LTF-2, RF974109) at the same dose and route. For more on control design, see our Isotype Controls vs FMO guide.

What quantities are available?

Standard sizes range from 100 µg to 5 mg. Bulk quantities (gram-scale) are available for long-term studies. Contact [email protected] for custom quotes on large orders.

Step-by-step protocol: In Vivo Checkpoint Antibody Administration in Mouse Tumor Models on protocols.io →

400+ In Vivo Antibodies — Ready to Ship

Immune checkpoint, cell depletion, cytokine neutralization, and isotype controls. Carrier-free, endotoxin ≤1 EU/mg, batch-consistent.

Browse InVivoMAb™ Plus →

All products are for research use only. For technical support, contact [email protected].

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