Microfluidic Systems with Embedded Cell Culture Chambers for High-Throughput Biological Assays

Arian Jaberi, Amir Monemian Esfahani, Fariba Aghabaglou, Jae Sung Park, Sidy Ndao, Ali Tamayol, Ruiguo Yang

Research output: Contribution to journalArticlepeer-review

Abstract

The ability to generate chemical and mechanical gradients on chips is important for either creating biomimetic designs or enabling high-throughput assays. However, there is still a significant knowledge gap in the generation of mechanical and chemical gradients in a single device. In this study, we developed gradient-generating microfluidic circuits with integrated microchambers to allow cell culture and to introduce chemical and mechanical gradients to cultured cells. A chemical gradient is generated across the microchambers, exposing cells to a uniform concentration of drugs. The embedded microchamber also produces a mechanical gradient in the form of varied shear stresses induced upon cells among different chambers as well as within the same chamber. Cells seeded within the chambers remain viable and show a normal morphology throughout the culture time. To validate the effect of different drug concentrations and shear stresses, doxorubicin is flowed into chambers seeded with skin cancer cells at different flow rates (from 0 to 0.2 μL/min). The experimental results show that increasing doxorubicin concentration (from 0 to 30 μg/mL) within chambers not only prohibits cell growth but also induces cell death. In addition, the increased shear stress (0.005 Pa) at high flow rates poses a synergistic effect on cell viability by inducing cell damage and detachment. Moreover, the ability of the device to seed cells in a 3D microenvironment was also examined and confirmed. Collectively, the study demonstrates the potential of microchamber-embedded microfluidic gradient generators in 3D cell culture and high-throughput drug screening.

Original languageEnglish (US)
Pages (from-to)6661-6671
Number of pages11
JournalACS Applied Bio Materials
Volume3
Issue number10
DOIs
StatePublished - Oct 19 2020

Keywords

  • cell coculture
  • drug screening
  • gradient generation
  • high-throughput assay
  • shear stress

ASJC Scopus subject areas

  • Chemistry(all)
  • Biomaterials
  • Biomedical Engineering
  • Biochemistry, medical

Fingerprint

Dive into the research topics of 'Microfluidic Systems with Embedded Cell Culture Chambers for High-Throughput Biological Assays'. Together they form a unique fingerprint.

Cite this