3D bioprinted breast cancer model reveals stroma-mediated modulation of extracellular matrix and radiosensitivity  

作　　者：Theo Desigaux Leo Comperat Nathalie Dusserre Marie-Laure Stachowicz Malou Lea Jean-William Dupuy Anthony Vial Michael Molinari Jean-Christophe Fricain Francois Paris Hugo Oliveira 

机构地区：[1]Univ.Bordeaux,Tissue Bioengineering INSERM U1026,F-33000,Bordeaux,France [2]INSERM U1026,ART BioPrint,F-33000,Bordeaux,France [3]Univ.Bordeaux,Bordeaux Proteome,F-33000,Bordeaux,France [4]Univ.Bordeaux,CNRS,INSERM,TBM-Core,US5,UAR 3427,OncoProt,F-33000,Bordeaux,France [5]Univ.Bordeaux,CNRS,Bordeaux INP,CBMN,UMR 5248,F-33600,Pessac,France [6]Services d’Odontologie et de Sante Buccale,CHU Bordeaux,F-33000,Bordeaux,France [7]CRCINA,INSERM,CNRS,Univ.Nantes,F-44000,Nantes,France [8]Institut de Cancerologie de l’Ouest,F-44800,Saint Herblain,France

出　　处：《Bioactive Materials》2024年第12期316-327,共12页生物活性材料（英文）

基　　金：the financial support of INSERM(France)and"Fondation ARC pour la recherche sur le cancer".

摘　　要：Deciphering breast cancer treatment resistance remains hindered by the lack of models that can successfully capture the four-dimensional dynamics of the tumor microenvironment.Here,we show that microextrusion bioprinting can reproducibly generate distinct cancer and stromal compartments integrating cells relevant to human pathology.Our findings unveil the functional maturation of this millimeter-sized model,showcasing the development of a hypoxic cancer core and an increased surface proliferation.Maturation was also driven by the presence of cancer-associated fibroblasts(CAF)that induced elevated microvascular-like structures complexity.Such modulation was concomitant to extracellular matrix remodeling,with high levels of collagen and matricellular proteins deposition by CAF,simultaneously increasing tumor stiffness and recapitulating breast cancer fibrotic development.Importantly,our bioprinted model faithfully reproduced response to treatment,further modulated by CAF.Notably,CAF played a protective role for cancer cells against radiotherapy,facilitating increased paracrine communications.This model holds promise as a platform to decipher interactions within the microenvironment and evaluate stroma-targeted drugs in a context relevant to human pathology.

关 键 词：BIOPRINTING Cancer microenvironment Extracellular matrix 

分 类 号：R318[医药卫生—生物医学工程]