4T1 Xenograft Model Service for Breast Cancer

The 4T1 xenograft model stands as one of the most clinically relevant in vivo platforms for studying stage IV human breast cancer, offering unparalleled insights into spontaneous metastasis and therapeutic efficacy. Alfa Cytology provides a comprehensive 4T1 xenograft model service, leveraging our deep expertise in oncology research to deliver high-quality, reproducible data that accelerates your drug discovery pipeline.

Overview of 4T1 Xenograft Model for Breast Cancer

The 4T1 mammary carcinoma is a transplantable cell line derived from a spontaneously arising mammary tumor in a BALB/cfC3H mouse. It is widely regarded as one of the best models for human breast cancer due to its unique ability to spontaneously metastasize from the primary tumor in the mammary gland to multiple distant sites, including the lungs, liver, bone, and brain.

Unlike many other in vivo models, the 4T1 model is syngeneic in BALB/c mice, meaning it can be studied in animals with a fully functional immune system. This makes it an indispensable tool for investigating immunotherapies and the complex interactions within the tumor microenvironment. The progressive spread of 4T1 cells closely mimics the clinical course of metastatic breast cancer in humans, providing a robust platform for evaluating both primary tumor growth inhibition and the prevention of metastatic recurrence.

Fig 1. In vitro characterisation of the 4T1 cell lines edited for mCAIX expression. (Kalniņa Z, et al., 2025)

Cell Line Information: 4T1

The 4T1 cell line is highly tumorigenic and invasive. It does not require immunocompromised hosts, allowing for a more authentic representation of the immune response during cancer progression.

Our Services

Workflow of 4T1 Xenograft Model Construction

At Alfa Cytology, we go beyond simple model establishment by providing end-to-end support for your breast cancer research. Our specialized team ensures the highest standards of animal welfare and scientific rigor, optimizing the 4T1 model to match your specific study objectives, whether you are testing novel chemotherapeutics, targeted biologics, or complex immune-oncology agents.

• Cell Preparation: 4T1 cells are cultured in vitro and harvested during the exponential growth phase to ensure maximum viability.
• Inoculation: A calibrated suspension of 4T1 cells is injected either subcutaneously or orthotopically into the mammary fat pad of syngeneic BALB/c mice.
• Acclimatization & Monitoring: Following inoculation, mice are closely monitored for clinical signs and initial tumor palpable formation.
• Growth Tracking: Tumor volume and body weight are measured regularly. Due to the rapid growth of 4T1, measurements are typically taken 2-3 times per week.
• Metastasis Evaluation: Depending on the study duration, distant organs are harvested for bioluminescence imaging or histological analysis to quantify metastatic burden.

Fig 2. 4T1 Xenograft Model Construction Workflow

Case Study - 4T1 Xenograft Model Development

In a recent validation study, Alfa Cytology successfully established a 4T1 orthotopic model to evaluate a novel small-molecule inhibitor. The primary mammary tumors became palpable within 7 days post-inoculation, exhibiting a robust growth curve. By day 21, systemic metastasis to the lungs was confirmed via H&E staining, demonstrating the model's reliability in capturing both local tumor kinetics and the metastatic cascade essential for drug efficacy profiling.

Why Choose Alfa Cytology?

• Syngeneic Expertise: Mastery of in vivo models in immunocompetent environments.
• Advanced Imaging: Capability for bioluminescent and fluorescent tracking of metastatic spread.
• Customized Protocols: Flexible dosing schedules and administration routes (IV, IP, PO, IT).
• Detailed Analytics: Comprehensive data packages including tumor growth curves, IHC, and cytokine profiling.

Contact Us

Ready to advance your breast cancer therapeutic programs? Our experts are standing by to discuss your specific research needs and provide a tailored project plan. Please reach out to us today to learn more about how Alfa Cytology can support your in vivo pharmacology goals, or contact us directly through our website to request a formal quote.

For research use only. Not intended for any clinical use.