Acoustic Printing of Patient‐Derived Organoids That Preserve Tumor Microenvironment for Personalized Drug Screening

Abstract Patient personalized treatment models can predict treatment response and assist in determining the optimal treatment option for individual patients. The tumor microenvironment mediates tumor development and prognosis. However, current tumor models such as patient‐derived tumor xenograft (PDX) and 2D culture models fail to preserve the patient‐derived tumor microenvironment. Herein, a technique for acoustic‐droplet‐printing‐of‐patient‐derived‐organoids (ADPDOs) is reported, which allows for high‐throughput, high‐viability, rapid, and uniform printing preparation of patient‐derived organoids. In particular, the ADPDOs are uniform in size and retain the parental tumor/fibroblast cell composition, mimicking a more realistic 3D environment of parent tissue in vitro, with histological features and protein expression closer to that of the tissue. Therefore, ADPDOs hold promise for application in personalized precision therapy for different patients. The authors test the clinical drug treatment response of different patients in a fast and convenient way to predict the therapeutic effect of various patients. Thus, this technique has great potential for predicting treatment response to personalized cancer therapy and constructing complex 3D tissue models.