Protocol for indirect and direct co-culture between human cancer cells and endothelial cells

STAR Protoc. 2023 Apr 21;4(2):102177. doi: 10.1016/j.xpro.2023.102177. Online ahead of print.

Abstract

The cross talk between cancer cells and endothelial cells (ECs) within the tumor microenvironment plays a critical role in tumor progression, recurrence, and cancer stemness. Here, we present a protocol containing two in vitro approaches to study such interactions. We first describe an indirect co-culture system to study the regulation of stemness markers in cancer cells by secreted factors from ECs. We then detail a direct co-culture system to study juxtracrine communications between the cell types. For complete details on the use and execution of this protocol, please refer to Sewell-Loftin et al.1 and Guo et al.2.

Keywords: Biotechnology and Bioengineering; Cancer; Cell Biology; Cell Culture; Cell-based Assays; Microscopy; Molecular Biology; Tissue Engineering.