Tumor cells avoid immune recognition by subverting the ability of the immune system to mount an inflammatory response that generates cytotoxic effector cells. This can be achieved through cytokine production by the tumor itself. Our objective was to determine the cytokine profile of neuroblastoma (NB) lesions in tumor vaccine models. We found that the murine NB cell line, Neuro2a, secretes macrophage migration inhibitory factor, MIF, a multifunctional cytokine with the potential to block effective immune responses to a tumor. Patient-derived NB cell lines were also found to produce MIF. MIF production by NB was documented at the level of RNA by RNAse protection, soluble cytokine production by ELISA, and in a macrophage migration assay. Our studies also confirmed reports of IL-6 production by human NB cell lines. NB culture-derived MIF was also shown to activate tumor cell migration. This supports the hypothesis that MIF is a tumor-derived cytokine that may play a role in NB aggressiveness and evasion of immune recognition.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000064028 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
CXCL8 modulates M0 macrophage proliferation and polarization to influence tumor progression in cervical cancer.
Sci Rep
January 2025
Prenatal Diagnosis Center in Guizhou Province, The Affiliated Hospital of Guizhou Medical University, Guizhou, Guiyang, 550009, China.
Cervical cancer (CESC) presents significant clinical challenges due to its complex tumor microenvironment (TME) and varied treatment responses. This study identified undifferentiated M0 macrophages as high-risk immune cells critically involved in CESC progression. Co-culture experiments further demonstrated that M0 macrophages significantly promoted HeLa cell proliferation, migration, and invasion, underscoring their pivotal role in modulating tumor cell behavior within the TME.
View Article and Find Full Text PDFDisrupting EDEM3-induced M2-like macrophage trafficking by glucose restriction overcomes resistance to PD-1/PD-L1 blockade.
Clin Transl Med
January 2025
Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.
Background: Immunotherapy is beneficial for some colorectal cancer (CRC) patients, but immunosuppressive networks limit its effectiveness. Cancer-associatedfibroblasts (CAFs) are significant in immune escape and resistance toimmunotherapy, emphasizing the urgent need for new treatment strategies.
Methods: Flow cytometric, Western blotting, proteomics analysis, analysis of public database data, genetically modified cell line models, T cell coculture, crystal violetstaining, ELISA, metabonomic and clinical tumour samples were conducted to assess the role of EDEM3 in immune escape and itsmolecular mechanisms.
Potential role of P4HB in the tumor microenvironment and its clinical prognostic value: a comprehensive pan-cancer analysis and experimental validation with a focus on KIRC.
Cancer Cell Int
January 2025
Department of Urology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
Background: Tumor microenvironment (TME) plays a crucial role in tumor growth and metastasis. Exploring biomarkers that are significantly associated with TME can help guide individualized treatment of patients.
Methods: We analyzed the expression and survival of P4HB in pan-cancer through the TCGA database, and verified the protein level of P4HB by the HPA database.
PNMA1 is a novel immune modulator and therapeutic target in hepatocellular carcinoma linked to bile acid metabolism.
Sci Rep
January 2025
Department of Breast Surgery, China-Japan Union Hospital of Jilin University, Changchun, 130033, China.
Hepatocellular carcinoma (HCC) necessitates innovative prognostic biomarkers and therapeutic targets. By investigating PNMA1 in HCC via the TCGA and GEO databases and our clinical data, we found that its overexpression is associated with worse survival. The relevance of PNMA1 extends to immune factors such as M1 macrophages, CD8 T cells, and immune checkpoints.
View Article and Find Full Text PDFMIF/CD74 axis in hepatic stellate cells mediates HBV-related liver fibrosis.
Int Immunopharmacol
January 2025
Department of Transplantation Immunology, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin Province 130061, China. Electronic address:
Chronic hepatitis B virus (HBV) infection is a major risk factor for liver fibrosis, cirrhosis, and hepatocellular carcinoma (HCC). Despite advances in understanding HBV-related liver diseases, effective therapeutic strategies remain limited. Macrophage migration inhibitory factor (MIF) has been implicated in various inflammatory and fibrotic conditions, but its role in HBV-induced liver fibrosis has not been fully explored.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!