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Updated: Mar 8, 2026

Measurement of Natural Killer Cell-Mediated Cytotoxicity and Migration in the Context of Hepatic Tumor Cells
Published on: February 22, 2020
STATs in NK-Cells: The Good, the Bad, and the Ugly
Dagmar Gotthardt1, Veronika Sexl1
1Department for Biomedical Sciences, Institute of Pharmacology and Toxicology, University of Veterinary Medicine , Vienna , Austria.
Abstract:
Natural killer (NK)-cells are major players in the fight against viral infections and transformed cells, but there is increasing evidence attributing a disease-promoting role to NK-cells. Cytokines present in the tumor microenvironment shape NK-cell maturation, function, and effector responses. Many cytokines signal via the Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway that is also frequently altered and constitutively active in a broad range of tumor cells. As a consequence, there are currently major efforts to develop therapeutic strategies to target this pathway. Therefore, it is of utmost importance to understand the role and contributions of JAK-STAT molecules in NK-cell biology-only this knowledge will allow us to predict effects of JAK-STAT inhibition for NK-cell functions and to successfully apply precision medicine. We will review the current knowledge on the role of JAK-STAT signaling for NK-cell functions and discuss conditions involved in the switch from NK-cell tumor surveillance to disease promotion.
Insights
Natural killer (NK) cells can promote disease, influenced by tumor microenvironment cytokines. Understanding Janus kinase (JAK)-STAT signaling in NK cells is crucial for targeted therapies and precision medicine.
Area of Science:
- Immunology
- Molecular Biology
- Oncology
Background:
- Natural killer (NK) cells are critical for anti-viral and anti-tumor immunity.
- Emerging evidence suggests NK cells can also promote disease progression.
- The tumor microenvironment significantly influences NK cell function and responses.
Purpose of the Study:
- To review the role of Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling in NK cell biology.
- To discuss how JAK-STAT pathways mediate the switch from tumor surveillance to disease promotion by NK cells.
- To highlight the importance of understanding JAK-STAT signaling for developing targeted therapies.
Main Methods:
- Literature review of existing research on JAK-STAT signaling and NK cell function.
- Analysis of cytokine-mediated effects on NK cell maturation and effector responses.
- Discussion of the implications of JAK-STAT pathway alterations in cancer.
Main Results:
- JAK-STAT signaling pathways are frequently dysregulated in tumor cells.
- Cytokines in the tumor microenvironment modulate NK cell functions via JAK-STAT.
- Understanding these roles is key to predicting therapeutic outcomes.
Conclusions:
- Targeting the JAK-STAT pathway requires a deep understanding of its specific role in NK cells.
- This knowledge is essential for effective precision medicine strategies in cancer treatment.
- Further research is needed to fully elucidate the dual role of NK cells in disease.
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