Humanized avian embryo models replicate an immune tumor environment for rapid immunotherapy studies

Area of Science:

• Oncology
• Immunology
• Developmental Biology

Background:

• Cancer immunotherapy aims to harness the patient's immune system to combat tumors.
• Current preclinical models often lack the speed and reliability needed for effective immunotherapy evaluation.
• There is a critical need for advanced models that accurately reflect the human tumor immune microenvironment.

Purpose of the Study:

• To develop and validate a humanized avian embryo model for preclinical cancer immunotherapy research.
• To establish methods for rapid screening of immune-based therapeutic strategies.
• To enable patient response stratification and biomarker discovery.

Main Methods:

• Creation of miniature, humanized tumor replicas in avian embryo tissues using patient or cell line-derived xenografts.
• Two implantation approaches: co-micro-implantation of human peripheral blood mononuclear cells (PBMCs) and cancer cells, or sequential implantation and injection.
• Integration of whole-embryo light sheet microscopy and immune cell molecular marker analysis.

Main Results:

• The humanized avian embryo model successfully recapitulates a relevant tumor immune microenvironment.
• Demonstrated the capability to rapidly screen immune-based therapeutic strategies, including anti-PD-1 therapy.
• Showcased potential for patient response stratification and identification of predictive biomarkers.

Conclusions:

• The humanized avian embryo technology provides a promising platform for accelerating cancer immunotherapy development.
• This model facilitates efficient preclinical evaluation and personalized treatment strategies.
• It supports the discovery of biomarkers for predicting patient responses to immunotherapy.