Nov 9, 2014

Induced Pluripotent Stem Cell-derived CAR-Macrophage Cells with Antigen-dependent Anti-Cancer Cell Functions for Liquid and Solid Tumors

BioRxiv : the Preprint Server for Biology
Heejung ShimJin Zhang

Abstract

The Chimera antigen receptor (CAR)-T cell therapy has gained great success in the clinic. However, there are still major challenges for its wider applications in a variety of cancer types including lack of effectiveness due to the highly complex tumor microenvironment, and the forbiddingly high cost due to personalized manufacturing procedures. In order to overcome these hurdles, numerous efforts have been spent focusing on optimizing Chimera Antigen Receptors, engineering and improving T cell capacity, exploiting features of subsets of T cell or NK cells, or making off-the-shelf universal T cells. Here, we developed induced pluripotent stem cells (iPSCs)-derived, CAR-expressing macrophage cells (CAR-iMac). These cells showed antigen-dependent macrophage functions such as expression and secretion of cytokines, polarization toward the pro-inflammatory/anti-tumor state, and phagocytosis of tumor cells, as well as some in vivo anti-cancer cell activity for both liquid and solid tumors. This technology platform for the first time provides an unlimited source of iPSC-derived engineered CAR-macrophage cells which could be utilized to eliminate cancer cells or modulate the tumor microenvironment in liquid and solid tumor immunotherapy.

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Mentioned in this Paper

Computer Software
EEF1A2
Genome-Wide Association Study
Study
Univariate Analysis
Genome
CETP protein, human
Virus Replication
CETP wt Allele
CETP gene

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