Elevated Galectin-3 levels in the tumor microenvironment of ovarian cancer - implication of ROS mediated suppression of NK cell antitumor response via tumor-associated neutrophils

被引:0
作者
Karlsson, Veronika [1 ,2 ]
Stal, Ebba [1 ]
Stoopendahl, Emma [1 ]
Ivarsson, Anton [1 ]
Leffler, Hakon [3 ]
Lycke, Maria [4 ]
Sundqvist, Martina [5 ]
Sundfeldt, Karin [1 ,4 ]
Christenson, Karin [2 ]
Bernson, Elin [1 ,4 ]
机构
[1] Univ Gothenburg, Sahlgrenska Ctr Canc Res, Gothenburg, Sweden
[2] Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Oral Microbiol & Immunol, Gothenburg, Sweden
[3] Lund Univ, Dept Lab Med, Lund, Sweden
[4] Univ Gothenburg, Inst Clin Sci, Sahlgrenska Acad, Dept Obstet & Gynecol, Gothenburg, Sweden
[5] Univ Gothenburg, Sahlgrenska Acad, Inst Med, Dept Rheumatol & Inflammat Res, Gothenburg, Sweden
来源
FRONTIERS IN IMMUNOLOGY | 2024年 / 15卷
关键词
galectin-3; ovarian cancer; NK cells; neutrophils; tumor immunology; ROS release; tumor microenvironment; NATURAL-KILLER-CELLS; GRANULE MOBILIZATION; PERIPHERAL-BLOOD; NADPH-OXIDASE; ACTIVATION; CARCINOMA; EXPRESSION; PROGRESSION; RECOGNITION; MECHANISMS;
D O I
10.3389/fimmu.2024.1506236
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Introduction Ovarian cancer is a lethal disease with low survival rates for women diagnosed in advanced stages. Current cancer immunotherapies are not efficient in ovarian cancer, and there is therefore a significant need for novel treatment options. The beta-galactoside-binding lectin, Galectin-3, is involved in different immune processes and has been associated with poor outcome in various cancer diagnoses. Here, we investigated how Galectin-3 affects the interaction between natural killer (NK) cells and neutrophils in the tumor microenvironment of ovarian cancer.Method Ascites from the metastatic tumor microenvironment and cyst fluid from the primary tumor site were collected from patients with high-grade serous carcinoma (HGSC) together with peripheral blood samples. Galectin-3 concentration was measured in ascites, cyst fluid and serum or plasma. Neutrophils isolated from HGSC ascites and autologous blood were analyzed to evaluate priming status and production of reactive oxygen species. In vitro co-culture assays with NK cells, neutrophils and K562 target cells (cancer cell line) were conducted to evaluate NK cell viability, degranulation and cytotoxicity.Results High levels of Galectin-3 were observed in cyst fluid and ascites from patients with HGSC. Neutrophils present in HGSC ascites showed signs of priming; however, the priming status varied greatly among the patient samples. Galectin-3 induced production of reactive oxygen species in ascites neutrophils, but only from a fraction of the patient samples, which is in line with the heterogenous priming status of the ascites neutrophils. In co-cultures with NK cells and K562 target cells, we observed that Galectin-3-induced production of reactive oxygen species in neutrophils resulted in decreased NK cell viability and lowered anti-tumor responses.Conclusion Taken together, our results demonstrate high levels of Galectin-3 in the tumormicroenvironment of HGSC. High levels of Galectin-3 may induce production of reactiveoxygen species in ascites neutrophils in some patients. In turn, reactive oxygen species produced by neutrophils may modulate the NK cell anti-tumor immunity. Together, this study suggests further investigation to evaluate if a Galectin-3-targeting therapy may be used in ovarian cancer.
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页数:15
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