Journal of Immunology Research最新文献

{"title":"Immunoinformatics Approach to Design a Chimeric CD70-Peptide Vaccine against Renal Cell Carcinoma","authors":"Haideh Namdari, Farhad Rezaei, Fatemeh Heidarnejad, Mohammad Yaghoubzad-Maleki, Maryam Karamigolbaghi","doi":"10.1155/2024/2875635","DOIUrl":"https://doi.org/10.1155/2024/2875635","url":null,"abstract":"Renal cell carcinoma (RCC) accounts for the majority of cancer-related deaths worldwide. Overexpression of CD70 has been linked to advanced stages of RCC. Therefore, this study aims to develop a multiepitope vaccine targeting the overexpressed CD70 using immunoinformatics techniques. In this investigation, in silico multiepitope vaccines were constructed by linking specific CD70 protein epitopes for helper T lymphocytes and CD8⁺ T lymphocytes. To enhance immunogenicity, sequences of cell-penetrating peptide (CPP), penetratin (pAntp), along with the entire sequence of tumor necrosis factor-<i>α</i> (TNF-<i>α</i>), were attached to the N-terminal and C-terminal of the CD70 epitopes. Computational assessments were performed on these chimeric vaccines for antigenicity, allergenicity, peptide toxicity, population coverage, and physicochemical properties. Furthermore, refined 3D constructs were subjected to a range of analyses, encompassing structural B-cell epitope prediction and molecular docking. The chosen vaccine construct underwent diverse assessments such as molecular dynamics simulation, immune response simulation, and in silico cloning. All vaccines comprised antigenic, nontoxic, and nonallergenic epitopes, ensuring extensive global population coverage. The vaccine constructs demonstrated favorable physicochemical characteristics. The binding affinity of chimeric vaccines to the TNF receptor remained relatively stable, influenced by the alignment of vaccine components. Molecular docking and dynamics analyses predicted stable interactions between CD70-CPP-TNF and the TNF receptor, indicating potential efficacy. In silico codon optimization and cloning of the vaccine nucleic acid sequence were accomplished using the pET28a plasmid. Furthermore, this vaccine displayed the capacity to modulate humoral and cellular immune responses. Overall, the results suggest therapeutic potential for the chimeric CD70-CPP-TNF vaccine against RCC. However, validation through <i>in vitro</i> and <i>in vivo</i> experiments is necessary. This trial is registered with NCT04696731 and NCT04046445.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"25 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139588480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PM2.5 Causes Increased Bacterial Invasion by Affecting HBD1 Expression in the Lung","authors":"Tianqi Zheng, Yajun Wang, Zheng Zhou, Shuyang Chen, Jinjun Jiang, Shujing Chen","doi":"10.1155/2024/6622950","DOIUrl":"https://doi.org/10.1155/2024/6622950","url":null,"abstract":"Our research addresses the critical environmental issue of a fine particulate matter (PM2.5), focusing on its association with the increased infection risks. We explored the influence of PM2.5 on human beta-defensin 1 (HBD1), an essential peptide in mucosal immunity found in the airway epithelium. Using C57BL/6J mice and human bronchial epithelial cells (HBE), we examined the effects of PM2.5 exposure followed by <i>Pseudomonas aeruginosa (P. aeruginosa)</i> infection on HBD1 expression at both mRNA and protein levels. The study revealed that PM2.5’s toxicity to epithelial cells and animals varies with time and concentration. Notably, HBE cells exposed to PM2.5 and <i>P. aeruginosa</i> showed increased bacterial invasion and decreased HBD1 expression compared to the cells exposed to <i>P. aeruginosa</i> alone. Similarly, mice studies indicated that combined exposure to PM2.5 and <i>P. aeruginosa</i> significantly reduced survival rates and increased bacterial invasion. These harmful effects, however, were alleviated by administering exogenous HBD1. Furthermore, our findings highlight the activation of MAPK and NF-<i>κ</i>B pathways following PM2.5 exposure. Inhibiting these pathways effectively increased HBD1 expression and diminished bacterial invasion. In summary, our study establishes that PM2.5 exposure intensifies <i>P. aeruginosa</i> invasion in both HBE cells and mouse models, primarily by suppressing HBD1 expression. This effect can be counteracted with exogenous HBD1, with the downregulation mechanism involving the MAPK and NF-<i>κ</i>B pathways. Our study endeavors to elucidate the pathogenesis of lung infections associated with PM2.5 exposure, providing a novel theoretical basis for the development of prevention and treatment strategies, with substantial clinical significance.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"20 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139588520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges in Emerging Vaccines and Future Promising Candidates against SARS-CoV-2 Variants","authors":"Tanmay Ghildiyal, Nishant Rai, Janhvi Mishra Rawat, Maargavi Singh, Jigisha Anand, Gaurav Pant, Gaurav Kumar, Amrullah Shidiki","doi":"10.1155/2024/9125398","DOIUrl":"https://doi.org/10.1155/2024/9125398","url":null,"abstract":"Since the COVID-19 outbreak, the severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) virus has evolved into variants with varied infectivity. Vaccines developed against COVID-19 infection have boosted immunity, but there is still uncertainty on how long the immunity from natural infection or vaccination will last. The present study attempts to outline the present level of information about the contagiousness and spread of SARS-CoV-2 variants of interest and variants of concern (VOCs). The keywords like COVID-19 vaccine types, VOCs, universal vaccines, bivalent, and other relevant terms were searched in NCBI, Science Direct, and WHO databases to review the published literature. The review provides an integrative discussion on the current state of knowledge on the type of vaccines developed against SARS-CoV-2, the safety and efficacy of COVID-19 vaccines concerning the VOCs, and prospects of novel universal, chimeric, and bivalent mRNA vaccines efficacy to fend off existing variants and other emerging coronaviruses. Genomic variation can be quite significant, as seen by the notable differences in impact, transmission rate, morbidity, and death during several human coronavirus outbreaks. Therefore, understanding the amount and characteristics of coronavirus genetic diversity in historical and contemporary strains can help researchers get an edge over upcoming variants.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"163 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification and Verification of Hub Mitochondrial Dysfunction Genes in Osteoarthritis Based on Bioinformatics Analysis","authors":"Hui Niu, Xingxing Deng, Qian Zhang, Yijun Zhao, Jinfeng Wen, Wenyu Li, Huan Liu, Xiong Guo, Cuiyan Wu","doi":"10.1155/2024/6822664","DOIUrl":"https://doi.org/10.1155/2024/6822664","url":null,"abstract":"<i>Objective</i>. Age-related mitochondrial dysfunction and associated oxidative stress may contribute to the development of osteoarthritis. The aim of this study was to identify hub genes associated with mitochondrial dysfunction in osteoarthritis (OA) patients, helping predict the risk of OA, and revealing the mechanism of OA progression. <i>Methods</i>. OA expression data and mitochondrial dysfunction genes were downloaded from GEO (GSE55235, GSE82107, and GSE114007) and GeneCard databases. The differentially expressed mitochondrial dysfunction genes (DEMDFGs) between OA and control samples were screened. Gene ontology (GO) and Kyoto encyclopedia of genes and genomes pathways were analyzed for DEMDFGs. The hub genes were determined by WGCNA and LASSO regression analysis. ROC curves manifested the diagnostic efficacy of each hub gene. A nomogram model was constructed and validated to predict OA risk. The expression of hub genes in OA and normal chondrocytes was verified by external datasets, qRT-PCR and western blotting. <i>Results</i>. A total of 31 DEMDFGs were identified, with 15 genes upregulated and 16 genes downregulated. GO functional enrichment analysis revealed that DEMDFGs were enriched in biological processes related to energy metabolism and cellular respiration. By employing weighted gene coexpression network analysis, we identified four distinct coexpression modules, among which the blue module exhibited the strongest correlation with OA. The intersection between DEMDFGs and this module yielded eight candidate genes. After LASSO analysis of the data, four hub genes (ACADL, CYBA, SLC19A2, and UCP2) were identified as potential biomarkers for OA. The expression levels of these four genes were externally validated in the GSE114007 dataset. And the biologically differential expression of these four genes has been verified in OA and normal chondrocytes. Moreover, the four hub genes had good sensitivity and specificity by ROC curve analysis, and the risk model constructed with these four genes showed promising performance. In conclusion, our study may provide novel mitochondrial dysfunction hub genes with potential clinical applications for understanding the pathology, diagnosis, and treatment of OA.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"25 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exosomes Derived from Schistosoma japonicum Cystatin-Treated Macrophages Attenuated CLP-Induced Sepsis in Mice","authors":"Feifei Huang, Yayun Qian, Huihui Li, Liang Chu, Chen Wan, Qili Shen, Qianqian Li, Xiuxiu Li, Xinyue Wu, Bin Zhan, Rui Zhou, Xiaodi Yang","doi":"10.1155/2024/8626082","DOIUrl":"https://doi.org/10.1155/2024/8626082","url":null,"abstract":"Sepsis is a disease caused by multiple microbial infections resulting in multiple organ failure. <i>Schistosoma japonicum</i> secreted cystatin (<i>Sj</i>-Cys) is a strong immunomodulator that stimulates M2 macrophages and alleviates inflammatory damage caused by sepsis. To determine whether the therapeutic effect of <i>Sj</i>-Cys on sepsis can be conveyed by the exosomes released by <i>Sj</i>-Cys-stimulated macrophages, RAW264.7 macrophages were stimulated with r<i>Sj</i>-Cys <i>in vitro</i>, the exosomes were obtained from the cell culture supernatant by ultracentrifugation. Sepsis was induced in BALB/c mice by cecal ligation and puncture (CLP). The septic mice were treated with exosomes derived from <i>Sj</i>-Cys-treated macrophages. The treatment effect of exosomes on sepsis was assessed by examining the survival rate of mice up to 72 hr and measuring serum levels of inflammatory cytokines, liver/kidney damage biomarkers, and observing pathological changes in tissue sections. The tissue levels of M1, M2 macrophage surface markers, and TRL2/MyD88 were measured to explore possible mechanisms. <i>Results</i>. Exosomes derived from <i>Sj</i>-Cys-treated macrophages exhibited significant therapeutic effect on CLP-induced sepsis in mice with prolonged survival rate and less damage of critical organs by downregulating the proinflammatory factors TNF-<i>α</i> and IL-6 and upregulating the anti-inflammatory factor TGF-<i>β</i>. The therapeutic effect of exosomes is associated with macrophage polarization from M1 to M2 in the infected tissues via downregulating TRL2/MyD88 inflammatory pathway. <i>Conclusions</i>. Exosomes derived from <i>Sj</i>-Cys-treated macrophages attenuated sepsis in mice through promoting macrophage polarization from M1 to M2 and reducing inflammatory responses, possibly via downregulating TLR2/MyD88 inflammatory signaling pathway. This offers new approaches for immunotherapy of sepsis.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"10 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alleviation of Rheumatoid Arthritis by Inducing IDO Expression with Trichinella spiralis Recombinant Protein 43","authors":"Xiao Ma, Dongming Liu, Wenhao Yu, Caixia Han","doi":"10.1155/2024/8816919","DOIUrl":"https://doi.org/10.1155/2024/8816919","url":null,"abstract":"Rheumatoid arthritis (RA) represents the autoimmune disorder that shows aggressive arthritis as the main symptom. It is difficult to treat and can lead to joint deformation and function loss. At present, <i>Trichinella spiralis</i> (<i>T. spiralis</i>) antigen has attracted much attention because it plays a role in host immune regulatory mechanisms. Therefore, we selected <i>T. spiralis</i> recombinant protein 43 (Tsp43) to treat the bovine collagen type II (BCII)-induced mice RA model and explored its therapeutic mechanisms. This work first verified that Tsp43 could promote the expression of indoleamine 2, 3-dioxygenase (IDO) in dendritic cells (DCs) in vitro. Then, we randomized BALB/c mice (8 weeks old) into six groups, including control, phosphate buffer saline (PBS), BCII, BCII + heat inactivated Tsp43 (HiTsp43), BCII + Tsp43, and BCII + Tsp43 + 1-methyl-troptophan (1-MT) groups. To determine the therapeutic effect of Tsp43 on the BCII-induced mice RA model, relevant cytokines in each group and pathological changes in ankle joints were detected. To explore the mechanisms of Tsp43 on the BCII-induced mice RA model, we checked the expression of IDO in each group, CD4⁺T cell proliferation, and apoptosis. Collectively, Tsp43 decreased tumor necrosis factor-<i>α</i> (TNF-<i>α</i>) and interleukin-1<i>β</i> (IL-1<i>β</i>) expression in BCII-induced mice RA model and recovered the ankle injury to a certain extent. Tsp43 promoted high expression of IDO, caused expression of related apoptotic proteins in CD4⁺T cells, and caused apoptosis in CD4⁺T cells. In addition, Tsp43 reduced the proliferation of CD4⁺T cells. However, these effects can be inhibited by 1-MT (IDO inhibitor). These results suggested that Tsp43 played an important role in the treatment of arthritis by inhibiting the proliferation of CD4⁺T cells and inducing CD4⁺T cells apoptosis through the high expression of IDO. The purpose of this experiment was to provide a new idea for the treatment of RA and lay a foundation for the development of parasite-derived drugs for the treatment of RA.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"29 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139481108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blocking Superantigen-Mediated Diseases: Challenges and Future Trends","authors":"Pengbo Wang, Zina Fredj, Hongyong Zhang, Guoguang Rong, Sumin Bian, Mohamad Sawan","doi":"10.1155/2024/2313062","DOIUrl":"https://doi.org/10.1155/2024/2313062","url":null,"abstract":"Superantigens are virulence factors secreted by microorganisms that can cause various immune diseases, such as overactivating the immune system, resulting in cytokine storms, rheumatoid arthritis, and multiple sclerosis. Some studies have demonstrated that superantigens do not require intracellular processing and instated bind as intact proteins to the antigen-binding groove of major histocompatibility complex II on antigen-presenting cells, resulting in the activation of T cells with different T-cell receptor V<i>β</i> and subsequent overstimulation. To combat superantigen-mediated diseases, researchers have employed different approaches, such as antibodies and simulated peptides. However, due to the complex nature of superantigens, these approaches have not been entirely successful in achieving optimal therapeutic outcomes. CD28 interacts with members of the B7 molecule family to activate T cells. Its mimicking peptide has been suggested as a potential candidate to block superantigens, but it can lead to reduced T-cell activity while increasing the host’s infection risk. Thus, this review focuses on the use of drug delivery methods to accurately target and block superantigens, while reducing the adverse effects associated with CD28 mimic peptides. We believe that this method has the potential to provide an effective and safe therapeutic strategy for superantigen-mediated diseases.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"24 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139481102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of the COVID-19 Epidemic on Inhalant Allergen Sensitization in Children","authors":"Xueshan Huang, Min Yang, Ma Ye, Jun Qiu, Yanping Chen","doi":"10.1155/2024/5641948","DOIUrl":"https://doi.org/10.1155/2024/5641948","url":null,"abstract":"&lt;i&gt;Objective&lt;/i&gt;. To explore the impact of non-pharmacological interventions on inhaled allergen sensitization in children during the COVID-19 pandemic. &lt;i&gt;Methods&lt;/i&gt;. The positive rate of inhaled allergens, allergens sIgE grade, and multiple sensitization rates before and during the pandemic were analyzed retrospectively in this study. Logistic regression analysis was used to compare the positive rate of allergens before and during the pandemic, using odds ratio (OR) and OR 95% CI to investigate the impact of the pandemic on allergen sensitization. &lt;i&gt;Results&lt;/i&gt;. Positive rates of d1 (49.5% vs. 38.5%), d2 (50.2% vs. 32.2%), e2 (10.1% vs. 6.1%), e1 (6.2% vs. 1.7%), mx2 (10.1% vs. 2.7%), sycamore (7.2% vs. 2.1%), w1 (4.0% vs. 1.7%), elm (3.1% vs. 0.6%), w6 (3.0% vs. 1.7%), and u80 (1.3% vs. 0.5%) increased significantly during the COVID-19 pandemic. After adjusting gender, age, season, and other potential influencing factors, the COVID-19 pandemic was found to be a risk factor for the positive rate of d1 (OR = 1.174, 95% CI = 1.015–1.358), d2 (OR = 1.301, 95% CI = 1.093–1.549), e2 (OR = 1.499, 95% CI = 1.280–1.756), mx2 (OR = 3.959, 95% CI = 3.358–4.446), w1 (OR = 1.828, 95% CI = 1.353–2.470, w6 (OR = 1.538, 95% CI = 1.123–2.106)), and u80 (OR = 2.521, 95% CI = 1.413–4.497) (&lt;i&gt;&lt;span&gt;&lt;svg height=\"9.2729pt\" style=\"vertical-align:-0.6370001pt\" version=\"1.1\" viewbox=\"-0.0498162 -8.6359 19.289 9.2729\" width=\"19.289pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,0,0)\"&gt;&lt;/path&gt;&lt;/g&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,11.658,0)\"&gt;&lt;/path&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span&gt;&lt;/span&gt;&lt;svg height=\"9.2729pt\" style=\"vertical-align:-0.6370001pt\" version=\"1.1\" viewbox=\"22.8711838 -8.6359 21.918 9.2729\" width=\"21.918pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,22.921,0)\"&gt;&lt;/path&gt;&lt;/g&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,29.161,0)\"&gt;&lt;/path&gt;&lt;/g&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,32.125,0)\"&gt;&lt;use xlink:href=\"#g113-49\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,38.365,0)\"&gt;&lt;/path&gt;&lt;/g&gt;&lt;/svg&gt;&lt;/span&gt;&lt;/i&gt;). In addition, d1 and d2 allergen sIgE grades increased during the COVID-19 pandemic (d1: &lt;i&gt;χ&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt; = 9.576, &lt;span&gt;&lt;svg height=\"9.2729pt\" style=\"vertical-align:-0.6370001pt\" version=\"1.1\" viewbox=\"-0.0498162 -8.6359 19.289 9.2729\" width=\"19.289pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,0,0)\"&gt;&lt;use xlink:href=\"#g113-81\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,11.658,0)\"&gt;&lt;use xlink:href=\"#g117-91\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span&gt;&lt;/span&gt;&lt;span&gt;&lt;svg height=\"9.2729pt\" style=\"vertical-align:-0.6370001pt\" version=\"1.1\" viewbox=\"22.8711838 -8.6359 21.918 9.2729\" width=\"21.918pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,22.921,0)\"&gt;&lt;use xlink:href=\"#g113-49\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g transform=\"matrix(.013,0,0,-0.013,","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"113 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139475467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiple Factors Determine the Oncolytic or Carcinogenic Effects of TLRs Activation in Cancer","authors":"Yingxiang Yang, Chengyue Jin, Anthony Yeo, Bo Jin","doi":"10.1155/2024/1111551","DOIUrl":"https://doi.org/10.1155/2024/1111551","url":null,"abstract":"Toll-like receptors (TLRs) belong to a germline-encoded protein family. These are pattern recognition receptors. They sense pathogen-associated molecular patterns (PAMPs). When this occurs, activation of the NF-<i>ĸ</i>B pathway follows. This triggers the innate immune response of the host. The consequent inflammatory cytokine response usually contributes to the elimination of the pathogen. Activation of TLRs also induces an adaptive immune response by a cross-prime mechanism. This mechanism is employed in cancer immunotherapy. Using TLR ligands as adjuvants induces upregulation of costimulatory signals which in turn activates a cytotoxic leukocyte response against cancer cells. However, TLRs are also overexpressed in human cancer cells resulting in increased cell proliferation, migration, invasion, and angiogenesis. An intracellular adaptor, myeloid differentiation factor 88 (MyD88) probably mediates this process. MyD88 is intimately involved with all TLRs except TLR3. One consequence of the interaction between a TLR and MyD88 is activation of NF-<i>ĸ</i>B. In this context of a variety of proinflammtory cytokines being produced, chronic inflammation may result. Inflammation is an important protective mechanism. However, chronic inflammation is also involved in carcinogenesis. Activation of NF-<i>ĸ</i>B inhibits apoptosis and under certain circumstances, tumor cell survival. In this review, the potential therapeutic value of TLRs in immunotherapy and its role in oncogenesis are explored. The emerging use of artificial intelligence is mentioned.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"82 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139464617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CD169 Expression in Lymph Nodes is Associated with Increased Infiltration of CD8+ T Cells in Tumors: A Systematic Review and Meta-Analysis","authors":"Yong Wang, Xiao-Ting Wu, Jing Chen","doi":"10.1155/2024/8873767","DOIUrl":"https://doi.org/10.1155/2024/8873767","url":null,"abstract":"The density of CD169⁺ macrophages has been reported to positively correlate with the number of CD8⁺ T cells, although this remains controversial. To better understand this topic, we conducted a meta-analysis. We searched the PubMed, Medline, and Web of Science databases for studies that were published before May 2022 and performed a meta-analysis of the incidence of low and high CD169 expression in groups based on CD8 expression using the random-effects model. A total of 10 studies were included in the meta-analysis. The incidence of high CD169 expression in lymph nodes was significantly lower than that of low CD169 expression in the low CD8 expression group (odds ratio (OR): 0.76, 95% confidence interval (CI): 0.6, 0.96); however, the incidence of high CD169 expression in lymph nodes was higher than that of low CD169 expression in the high CD8 expression group (OR: 1.50, 95% CI: 1.08, 2.07). We also found that the expression of CD169 in tumors was lower than that in nontumor tissues (standardized mean difference: −5.29, 95% CI: −7.47, −3.11). The overall survival and hazard ratio of patients with high and low CD169 expression was 0.45 (95% CI: 0.37, 0.55). This analysis showed that high CD169 expression was associated with a high CD8 expression, and low CD169 expression was associated with low CD8 expression. The risk of death was 55% lower for patients with high CD169 expression, and high CD169 expression may be associated with favorable survival outcomes in cancer patients. However, the number and heterogeneity of the studies should be taken into consideration when evaluating the analysis. High-quality randomized controlled trials on the association between CD169 and CD8 expression are needed to verify these effects.","PeriodicalId":15952,"journal":{"name":"Journal of Immunology Research","volume":"5 1","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139464649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}