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Tumor Discovery                                                             Mobile phone effects on testis



                                                               specific cytokines, including IL-4, IFN-γ, growth factors,
                                                               and oncogenes. Other studies have suggested that IL-4-
                                                                           17
                                                               mediated signaling through STAT contributes to tumor
                                                               development within the tumor microenvironment. 18-21
                                                               Indeed, studies have specifically indicated that dysregulated
                                                               IL-4 formation is associated with various cancer types. 21,22
                                                                 IL-4 is a versatile cytokine and vital for regulating
                                                               the immune system.  Upon IL-4 binding to its cytokine
                                                                               22
                                                               receptor, the ensuing activation of cell growth mediators,
                                                               resistance to apoptosis, gene activation, and differentiation
                                                               occur.  The significance of IL-4 as a promoter of tumor-
                                                                    22
                                                               initiating/cancer stem cell (CSC)-like cells has been
                                                               demonstrated across various cancers. Elevated levels of IL-4
                                                               (generally generated by tumor-infiltrating lymphocytes)
                                                               have been verified in advanced-stage prostate cancer
            Figure  6. Negative SALL4 immunohistochemical (IHC) staining of   23
            seminiferous tubules (IHC × 200). Scale bar: 100 μm.  (PC) patients.   In vitro  studies  with  PC  cell  lines  have
                                                               demonstrated that IL-4 stimulates NF-κB and androgen
                                                                                                    24
            widely accepted view regarding the risk factors suggests that   receptors in a ligand-independent manner.  In colon
            TGCT development arises from a combination of genetic,   cancer,  CD133-positive  tumor-initiating cells exhibit
            environmental, and hormonal factors.  There have been   autocrine IL-4 signaling, leading to the upregulation of
                                           13
            suggestions that mobile phones may be associated with the   the anti-apoptotic protein Survivin, a target of the STAT-6
                                                                      25
            development of TGCT as one of the environmental factors   pathway.  In the pancreatic cancer cell line Capan-1,
                                                               the knockdown of IL4Rα results in reduced cell growth,
            due to their intense and close proximity to the testes.    decreased anchorage-independent colony size, and
                                                         14
            However, the mechanism by which mobile phones could   inhibition of migration.  Similarly, in breast cancer cells,
                                                                                  26
            lead to TGCT has not been conclusively demonstrated.   an antagonist of the IL-4 receptor IL4Rα was able to reduce
            Nevertheless, it is acknowledged that inflammatory changes   the number of CD44+/CD24- CSC-like cells.  However,
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            in the testes can be induced by mobile phone-related   there is currently no study in the existing literature that
            RF-EMR.  Regarding the immune mechanism in TGCT,   conclusively proves the relationship between IL-4 and the
                   10
            previous studies have elucidated specific immune cell   development of TGCT. Our research revealed that exposure
            and cytokine characteristics.  Various pro-inflammatory   to RF-EMR increased IL-4 gene expression levels in rats.
                                   3,4
            cytokines have been implicated in germ cell proliferation,   Although we lack robust evidence, this finding prompts
            spermatogenetic cell differentiation, TGCT pathogenesis,   the question: Could IL-4 exhibit a similar relationship with
            metastasis, invasion, and neo-angiogenesis.  Building   TGCT as observed with the aforementioned tumors?
                                                 15
            upon these data, our study suggests that the inflammation
            induced by RF-EMR in the testes and the associated   The IFN-γ cytokine is predominantly generated by
                                                                                                    28
            immune response may increase the risk of TGCT.     activated T lymphocytes and natural killer cells. Although
                                                               IFN-γ is effective against microbial infections, it also plays
              In addition to animal experiments and clinical studies,   essential roles in numerous diseases, especially various
            cell culture investigations have also identified a relationship   types of cancers. In the past, IFN-γ was recognized solely
            between TGCT and RF-EMR.  Yutong et al. examined N9   for its antitumor properties.  The cytotoxic effects of IFN-
                                    16
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            microglial cells exposed to 2.45 GHz EMF and observed   γ, especially against tumor cells, have been extensively
            increased levels of activated signal transducers and   demonstrated in numerous studies. Subsequently,
            activators of transcription 3 (STAT3), which subsequently   the pro-tumor effects of IFN-  γ began to emerge. The
            increased the transcription levels of inflammation-related   discovery that IFN-γ promotes the expression of inhibitory
            genes, especially inducible nitric oxide synthase (iNOS)   molecules such as programmed cell death ligand 1 (PDL1),
            and TNF-α. They suggested that exposure to 2.45 GHz   PDL2, indoleamine 2,3-dioxygenase 1 (IDO1), iNOS,
            EMF  could  initiate  inflammation and  malignancy  in   FAS, and FAS ligand (FASL), all of which limit antitumor
            microglia cells through signal transducer and  activator   immunity, has raised concerns regarding the use of IFN-
                                            16
            of transcription 3 (STAT3) pathway.  STAT proteins   γ-modulating  cancer  immunotherapies.   Benci  et  al.
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            comprise various transcription factors that mediate signal   reported that initial exposure to IFN-γ primes other factors
            transduction from the extracellular environment to the cell   to promote antigen presentation, T cell priming and
            nucleus. Notably, the activation of STAT3 is induced by   activation, and tumor cell killing. Despite that, prolonged

            Volume 3 Issue 1 (2024)                         7                          https://doi.org/10.36922/td.1703
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