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© Thierry Blisnick & Philippe Bastin, Institut Pasteur
Bloodstream Trypanosoma brucei cell
Publication : Scientific reports

Developing a xenograft model of human vasculature in the mouse ear pinna.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Scientific reports - 06 Feb 2020

Meehan GR, Scales HE, Osii R, De Niz M, Lawton JC, Marti M, Garside P, Craig A, Brewer JM,

Link to Pubmed [PMID] – 32029768

Link to DOI – 10.1038/s41598-020-58650-y

Sci Rep 2020 02; 10(1): 2058

Humanised xenograft models allow for the analysis of human tissue within a physiological environment in vivo. However, current models often rely on the angiogenesis and ingrowth of recipient vasculature to perfuse tissues, preventing analysis of biological processes and diseases involving human blood vessels. This limits the effectiveness of xenografts in replicating human physiology and may lead to issues with translating findings into human research. We have designed a xenograft model of human vasculature to address this issue. Human subcutaneous fat was cultured in vitro to promote blood vessel outgrowth prior to implantation into immunocompromised mice. We demonstrate that implants survived, retained human vasculature and anastomosed with the circulatory system of the recipient mouse. Significantly, by performing transplants into the ear pinna, this system enabled intravital observation of xenografts by multiphoton microscopy, allowing us to visualise the steps leading to vascular cytoadherence of erythrocytes infected with the human parasite Plasmodium falciparum. This model represents a useful tool for imaging the interactions that occur within human tissues in vivo and permits visualization of blood flow and cellular recruitment in a system which is amenable to intervention for various studies in basic biology together with drug evaluation and mechanism of action studies.

https://pubmed.ncbi.nlm.nih.gov/32029768