Surface Optimization and Design Adaptation toward Spheroid Formation On-Chip

Sensors

Rahi Avazpour¹  Derek H. Rosenzweig²  Mohamad Sawan³  Neda Azizipour³  Abdellah Ajji³ 

[1] Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada;Department of Surgery, McGill University, Montréal, QC H3G 1A4, Canada;Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada;

关键词: microfluidic;    3D cell culture;    spheroid;    surface modification;    PDMS;    cancer;   

DOI  :  10.3390/s22093191

来源: DOAJ

【 摘 要 】

Spheroids have become an essential tool in preclinical cancer research. The uniformity of spheroids is a critical parameter in drug test results. Spheroids form by self-assembly of cells. Hence, the control of homogeneity of spheroids in terms of size, shape, and density is challenging. We developed surface-optimized polydimethylsiloxane (PDMS) biochip platforms for uniform spheroid formation on-chip. These biochips were surface modified with 10% bovine serum albumin (BSA) to effectively suppress cell adhesion on the PDMS surface. These surface-optimized platforms facilitate cell self-aggregations to produce homogenous non-scaffold-based spheroids. We produced uniform spheroids on these biochips using six different established human cell lines and a co-culture model. Here, we observe that the concentration of the BSA is important in blocking cell adhesion to the PDMS surfaces. Biochips treated with 3% BSA demonstrated cell repellent properties similar to the bare PDMS surfaces. This work highlights the importance of surface modification on spheroid production on PDMS-based microfluidic devices.

【 授权许可】

Unknown