
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 15, 2024
Language: Английский
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 15, 2024
Language: Английский
Pharmacological Research, Journal Year: 2024, Volume and Issue: 206, P. 107271 - 107271
Published: June 19, 2024
Colorectal cancer is the second most prevalent and deadly worldwide. The emergence of immune checkpoint therapy has provided a revolutionary strategy for treatment solid tumors. However, less than 5 % colorectal patients respond to therapy. Thus, it great scientific significance develop "potentiators" In this study, we found that knocking down different DNMT HDAC isoforms could increase expression IFNs in cells, which can enhance effectiveness Therefore, combined inhibition cloud synergistically effect immunotherapy. We dual inhibitors C02S inhibit tumor growth immunocompetent mice but not immunocompromised nude mice, indicates exerts its antitumor effects through system. Mechanistically, ERVs, generated intracellular levels dsRNA then promotes RIG-I/MDA5-MAVS signaling pathway. Moreover, increased infiltration DCs T cells microenvironment, enhanced efficacy anti-PD-L1 MC38 CT26 model. These results confirmed activate pathway, remodel microenvironment therapy, provides new evidence solutions development "potentiator"
Language: Английский
Citations
6Cancers, Journal Year: 2024, Volume and Issue: 17(1), P. 66 - 66
Published: Dec. 29, 2024
Hepatocellular carcinoma (HCC) is a major global health issue characterized by poor prognosis and complex tumor biology. One of the critical components HCC microenvironment (TME) tumor-associated macrophages (TAMs), which play pivotal role in modulating growth, immune evasion, metastasis. Macrophages are divided into two subtypes: pro-inflammatory M1 anti-inflammatory M2, both may exist TME with altered function proportion. The M2 further subdivided four distinct suppressive subsets. TAMs generally counted as M2-like functions that exert significant influence on cancer progression ability tumors to escape surveillance. Their involvement responses via different mechanisms at local systemic levels has made them key target for therapeutic interventions seeking enhance treatment outcomes. How TAMs’ depletion influences primary interest immunotherapies. purpose this review delve recent progress TAM-targeting therapies. We will explore current theories, benefits, challenges associated or inhibition. manuscript concludes future directions potential implications clinical practice.
Language: Английский
Citations
4Frontiers in Immunology, Journal Year: 2025, Volume and Issue: 16
Published: Feb. 17, 2025
Metastasis is a hallmark of advanced cancer, and the liver common site for secondary metastasis many tumor cells, including colorectal, pancreatic, gastric, prostate cancers. Macrophages in microenvironment (TME) promote cell through various mechanisms, angiogenesis immunosuppression, play unique role development metastasis. are affected by variety factors. Under conditions hypoxia increased acidity TME, more factors now found to polarization macrophages M2 type, exosomes amino acids. M2-type secretion such as VEGF, IL-1β, TGF-β1. subjected multiple regulatory mechanisms. They also interact with cells within co-regulate certain conditions, creation an immunosuppressive microenvironment. This interaction promotes metastasis, drug resistance, immune escape. Based on advent single-cell sequencing technology, further insights into macrophage subpopulations may help exploring new therapeutic targets future. In this paper, we will focus how affect well other each other, investigate mechanisms involved their potential targets.
Language: Английский
Citations
0Journal of Medicinal Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 27, 2025
Repolarizing M2-like tumor associated macrophages (TAMs) into M1 phenotype by blocking CSF-1/CSF-1R signaling pathway represents a promising strategy to remodel the immune microenvironment. Therefore, discovery of novel potent CSF-1R inhibitors is great significance for colorectal cancer immunotherapy. In this work, series were designed and synthesized through rational molecular hybridization step structural optimization based on PLX3397 BLZ945. Among these derivatives, compound III-1 was strongly bound showed inhibitory activity. It also effectively inhibited activation intracellular its downstream events. Mechanically, efficiently repolarized TAMs M1-phenotype, proliferation promoted apoptosis cells immunoregulation. More importantly, demonstrated efficacy against patient-derived organoids exhibited stronger anticolorectal in vivo compared PLX3397, highlighting potential immunotherapy cancer.
Language: Английский
Citations
0Frontiers of Medicine, Journal Year: 2025, Volume and Issue: unknown
Published: March 6, 2025
Language: Английский
Citations
0Pharmaceuticals, Journal Year: 2025, Volume and Issue: 18(4), P. 491 - 491
Published: March 28, 2025
Background: Endoplasmic reticulum (ER)-targeted phototherapy has emerged as a promising approach to amplify ER stress, induce immunogenic cell death (ICD), and enhance anti-tumor immunity. However, its impact on the antigenicity of dying tumor cells remains poorly understood. Methods: Laser activation ER-targeted photosensitizer ER-Cy-poNO2 was performed investigate effects antigenicity. Transcriptomic analysis carried out assess gene expression changes. Immunopeptidomics profiling used identify high-affinity major histocompatibility complex class I (MHC-I) ligands. In vitro functional studies were conducted evaluate dendritic maturation T lymphocyte activation, while in vivo experiments by combining identified peptide with poly IC Results: significantly remodeled antigenic landscape 4T-1 cells, enhancing their immunogenicity. revealed upregulation antigen processing presentation pathways. multiple MHC-I ligands, IF4G3986–994 (QGPKTIEQI) showing exceptional vitro, promoted enhanced lymphocytes activation. vivo, combination elicited robust immunity, characterized increased CD8+ infiltration, reduced regulatory (Tregs) microenvironment, elevated systemic Interferon-gamma (IFN-γ) levels, significant growth inhibition without toxicity. Conclusions: These findings establish mechanistic link between stress-driven ICD, immunopeptidome remodeling, adaptive immune highlighting potential platform for identifying peptides advancing peptide-based cancer vaccines.
Language: Английский
Citations
0Frontiers in Oncology, Journal Year: 2025, Volume and Issue: 15
Published: April 9, 2025
In many cancers, the tumor microenvironment is enriched with cholesterol due to increased biosynthesis and uptake by cancer cells, resulting in accumulation of cholesterol, esters, oxysterols other metabolites various functions. These molecules serve as structural components, energy sources intracellular signaling mediators, while their toxic by-products are secreted suppress anti-tumor immune activity prevent lipid peroxidation that could induce cell apoptosis. Immune cells also contribute dynamics. Tumor-associated macrophages (TAMs) release support metabolism, myeloid-derived suppressor (MDSCs) consume essential such L-arginine, which impairs T-cell proliferation activation. Elevated dendritic migration antigen presentation and, lymphocytes, favors development a regulatory T (Treg) phenotype inhibits antitumor cytokines, further weakening response. findings suggest targeting metabolism promising strategy for treatment, improving efficacy checkpoint blockade (ICB) therapies. this manuscript, molecular mechanisms underlying effects on landscape reviewed potential cholesterol-lowering drugs enhance responses explored.
Language: Английский
Citations
0Cytokine & Growth Factor Reviews, Journal Year: 2025, Volume and Issue: unknown
Published: April 1, 2025
Language: Английский
Citations
0Cancer Letters, Journal Year: 2025, Volume and Issue: unknown, P. 217737 - 217737
Published: April 1, 2025
Language: Английский
Citations
0Pharmacological Research, Journal Year: 2024, Volume and Issue: 204, P. 107196 - 107196
Published: April 25, 2024
Language: Английский
Citations
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