期刊
JOURNAL OF INTERFERON AND CYTOKINE RESEARCH
卷 41, 期 12, 页码 450-460出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/jir.2021.0078
关键词
adoptive cell immunotherapy; NK; CXCR2; IL-2; CRISPR-Cas9; colon cancer
资金
- Major Science and Technology Project of Zhejiang Province, China [2017C03053]
- Zhejiang Provincial Department of Science and Technology
By upregulating the expression of CXCR2 and IL-2 on NK-92 cells using CRISPR-Cas9 gene-editing technology, the NK-92 cells were able to increasingly transfer into tumor sites, exhibit stronger cell-killing and proliferation activity, and show enhanced inhibitory effects on human colon cancer growth. This gene-editing modification of NK cells is expected to become a novel and promising strategy for tumor treatment.
Natural killer (NK) cells have shown good application prospects in adoptive cellular immunotherapy against cancer. However, due to its insufficient infiltration and low activity, the therapeutic effect of infused NK cells has been limited in solid tumors, such as colorectal cancer. It has been proved that tumor-produced chemokines regulate the migration of NK cells expressing corresponding chemokine receptors, and cytokines could enhance the antitumor activity of NK cells. In this study, we innovatively upregulated the expression of chemokine receptor CXC chemokine receptor 2 (CXCR2) and cytokine interleukin (IL)-2 on NK-92 cells using CRISPR-Cas9 gene-editing technology. We demonstrated that overexpressing CXCR2 and IL-2 promotes NK-92 cells to increasingly transfer into tumor sites and achieve stronger cell-killing and proliferation activity. Moreover, the inhibitory effects of gene-edited NK-92 cells on the growth of human colon cancer in vivo were also improved. The tumor burden of tumor-bearing mice was reduced, and their survival time was significantly prolonged. Gene-editing modification NK cells are expected to become a novel and promising tumor treatment strategy.
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