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Mammary Tumor Organoid Culture in Non‐Adhesive Alginate for Luminal Mechanics and High‐Throughput Drug Screening
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Mammary Tumor Organoid Culture in Non‐Adhesive Alginate for Luminal Mechanics and High‐Throughput Drug Screening
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Journal Article
Mammary Tumor Organoid Culture in Non‐Adhesive Alginate for Luminal Mechanics and High‐Throughput Drug Screening
2021
Overview
Mammary tumor organoids have become a promising in vitro model for drug screening and personalized medicine. However, the dependency on the basement membrane extract (BME) as the growth matrices limits their comprehensive application. In this work, mouse mammary tumor organoids are established by encapsulating tumor pieces in non‐adhesive alginate. High‐throughput generation of organoids in alginate microbeads is achieved utilizing microfluidic droplet technology. Tumor pieces within the alginate microbeads developed both luminal‐ and solid‐like structures and displayed a high similarity to the original fresh tumor in cellular phenotypes and lineages. The mechanical forces of the luminal organoids in the alginate capsules are analyzed with the theory of the thick‐wall pressure vessel (TWPV) model. The luminal pressure of the organoids increase with the lumen growth and can reach 2 kPa after two weeks’ culture. Finally, the mammary tumor organoids are treated with doxorubicin and latrunculin A to evaluate their application as a drug screening platform. It is found that the drug response is related to the luminal size and pressures of organoids. This high‐throughput culture for mammary tumor organoids may present a promising tool for preclinical drug target validation and personalized medicine. Mammary tumor organoids culture heavily relies on basement membrane extract hydrogels. Herein, non‐adhesive alginate is found to be a good candidate for the culture of mouse mammary tumor organoids. Alginate microbeads generated by microfluidic droplet technique enhance the organoid's yield and are further used for luminal mechanics and high‐throughput drug screening.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc,Wiley
Subject
/ alginate
/ Animals
/ Antineoplastic Agents - pharmacology
/ Bridged Bicyclo Compounds, Heterocyclic - pharmacology
/ Cancer
/ Cell Culture Techniques - instrumentation
/ Cell Culture Techniques - methods
/ Cell Survival - drug effects
/ Dimethylpolysiloxanes - chemistry
/ Female
/ High-Throughput Screening Assays - methods
/ Mammary Neoplasms, Animal - metabolism
/ Mammary Neoplasms, Animal - pathology
/ Mice
/ Thiazolidines - pharmacology
/ Tumors
