MICROBIOLOGICAL RESEARCH
·
2024
·
IF 6.1
Li-Li Zhang,Jia-Ying Xu,Yifei Xing,Pengcheng Wu,Yi-Wen Jin,Wei Wei,Lin Zhao,Jing Yang,Guo-Chong Chen,Li-Qiang Qin
Radiation injury to the intestine is one of the most common complications in patients undergoing abdominal or pelvic cavity radiotherapy. In this study, we investigated the potential protective effect of Lactobacillus rhamnosus GG (LGG) on radiation-induced intestinal injury and its underlying mechanisms. Mice were assigned to a control group, a 10 Gy total abdominal irradiation (TAI) group, or a group pretreated with 10 8 CFU LGG for three days before TAI. Small intestine and gut microbiota were analyzed 3.5 days post-exposure. LGG intervention improved intestinal structure, reduced jejunal DNA damage, and inhibited the inflammatory cGAS/STING pathway. Furthermore, LGG reduced M1 proinflammatory macrophage and CD8+ T cell infiltration, restoring the balance between Th17 and Treg cells in the inflamed jejunum. LGG also partially restored the gut microbiota. These findings suggest the possible therapeutic radioprotective effect of probiotics LGG in alleviating radiation-induced intestinal injury by maintaining immune homeostasis and reshaping gut microbiota.
研究领域:
放射生物学
·
免疫学
·
微生物学
·
胃肠病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Bioactive Materials
·
2024
·
IF 18
An Shao,Lulu Jin,Yanni Ge,Ziqiang Ye,Mingyu Xu,Yifan Zhou,Yingyu Li,Linyan Wang,Pinglong Xu,Kai Jin,Zhengwei Mao,Juan Ye
Retinal neovascularization (RNV), a typical pathological manifestation involved in most neovascular diseases, causes retinal detachment, vision loss, and ultimately irreversible blindness. Repeated intravitreal injections of anti-VEGF drugs were developed against RNV, with limitations of incomplete responses and adverse effects. Therefore, a new treatment with a better curative effect and more prolonged dosage is demanding. Here, we induced macrophage polarization to anti-inflammatory M2 phenotype by inhibiting cGAS-STING signaling with an antagonist C176, appreciating the role of cGAS-STING signaling in the retina in pro-inflammatory M1 polarization. C176-loaded and phosphatidylserine-modified dendritic mesoporous silica nanoparticles were constructed and examined by a single intravitreal injection. The biosafe nanoparticles were phagocytosed by retinal macrophages through a phosphatidylserine-mediated “eat me” signal, which persistently release C176 to suppress STING signaling and thereby promote macrophage M2 polarization specifically. A single dosage can effectively alleviate pathological angiogenesis phenotypes in murine oxygen-induced retinopathy models. In conclusion, these C176-loaded nanoparticles with enhanced cell uptake and long-lasting STING inhibition effects might serve as a promising way for treating RNV.
研究领域:
眼科学
·
纳米技术
·
免疫学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Acta Biomaterialia
·
2024
·
IF 9.4
Siyuan Luo,Yueyan Yang,Liuting Chen,Perumal Ramesh Kannan,Weili Yang,Yongjia Zhang,Ruibo Zhao,Xiaoli Liu,Yao Li,Xiangdong Kong
Tumor hypoxia, high oxidative stress, and low immunogenic create a deep-rooted immunosuppressive microenvironment, posing a major challenge to the therapeutic efficiency of cancer immunotherapy for solid tumor. Herein, an intelligent nanoplatform responsive to the tumor microenvironment (TME) capable of hypoxia relief and immune stimulation has been engineered for efficient solid tumor immunotherapy. The MnO 2 @OxA@OMV nanoreactor, enclosing bacterial-derived outer membrane vesicles (OMVs)-wrapped MnO 2 nanoenzyme and the immunogenic cell death inducer oxaliplatin (OxA), demonstrated intrinsic catalase-like activity within the TME, which effectively catalyzed the endogenous H 2 O 2 into O 2 to enable a prolonged oxygen supply, thereby alleviating the tumor's oxidative stress and hypoxic TME, and expediting OxA release. The combinational action of OxA-caused ICD effect and Mn 2+ from nanoreactor enabled the motivation of the cGAS-STING pathway to significantly improve the activation of STING and dendritic cells (DCs) maturation, resulting in metalloimmunotherapy. Furthermore, the immunostimulant OMVs played a crucial role in promoting the infiltration of activated CD8 + T cells into the solid tumor. Overall, the nanoreactor offers a robust platform for solid tumor treatment, highlighting the significant potential of combining relief from tumor hypoxia and immune stimulation for metalloimmunotherapy. Statement of Significance A tailor-made nanoreactor was fabricated by enclosing bacterial-derived outer membrane vesicles (OMVs) onto MnO 2 nanoenzyme and loading with immunogenic cell death inducer oxaliplatin (OxA) for tumor metalloimmunotherapy. The nanoreactor possesses intrinsic catalase-like activity within the tumor microenvironment, which effectively enabled a prolonged oxygen supply by catalyzing the conversion of endogenous H 2 O 2 into O2, thereby alleviating tumor hypoxia and expediting OxA release. Furthermore, the TME-responsive release of nutritional Mn 2+ sensitized the cGAS-STING pathway and collaborated with OxA-induced immunogenic cell death (ICD). Combing with immunostimulatory OMVs enhances the uptake of nanoreactors by DCs and promotes the infiltration of activated CD8 + T cells. This nanoreactor offers a robust platform for solid tumor treatment, highlighting the significant potential of combining relief from tumor hypoxia and immune stimulation for metalloimmunotherapy.
研究领域:
癌症免疫疗法
·
纳米技术
·
生物材料
·
肿瘤生物学
·
免疫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Aggregate
·
2025
·
IF 13.7
Xiaojiang Zhang,Yujie Zhang,Pengqian Wang,Feiyu Shi,Siyuan Du,Zhe Zhang,Daocheng Wu,Junjun She,Ya Wang
To improve the long-term therapeutic efficacy of colorectal cancer, we propose a synergistic treatment strategy involving dual-pathway, multistep induction of long-term hyperimmunity combined with photothermal-chemotherapy. To implement this strategy, infinite coordination polymer nanoparticles (SN38-Mn(II)-EGCG ICP NPs) were prepared by coordinating SN38, EGCG, and Mn 2+ . These nanoparticles were then coated with polydopamine (PDA) and grafted with folate-PEG-thiol (FA-PEG-SH) onto their surfaces, producing tumor-targeting folate-modified PDA infinite coordination polymer nanocomposites (ICP@FA-PDA nanocomposites). These nanocomposites exhibit a particle size of 94.9 ± 1.6 nm with a high drug loading capacity (83.3% ± 1.5%), drug release under acidic conditions while maintaining stability in physiological environments. Furthermore, each component within the nanocomposites serves multiple functions. Notably, the incorporation of multiple components triggers a powerful antitumor immune effect and establishes enduring immune memory through a dual-pathway and multistep approach, which is produced with the activation of the cGAS-STING pathway and immunogenic cell death (ICD) by a four-component multistep process. Under a low-dose regimen, this approach induces dual-pathway hyperimmunity effect and generates ultra-long immunological memory, marked by a ninefold increase in CD8 + T cell infiltration, a fourfold increase in CD4 + T lymphocytes, a fourfold reduction in Treg cells, and a fivefold increase in memory T cells. The remarkable therapy efficacy is achieved by hyperimmunity effect combination of SN38 and EGCG chemotherapy and photothermal therapy. In vivo studies demonstrated that mice treated with ICP@FA-PDA nanocomposites achieved complete eradication of cancer within 21 days, with no recurrence observed within 60 days. These nanocomposites hold significant promise and potential for future clinical translation.
研究领域:
癌症治疗
·
纳米医学
·
免疫学
·
化学
·
生物材料
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Zhiyan Li,Xianghui Li,Yanjun Lu,Xudong Zhu,Wenxuan Zheng,Kai Chen,Xingzhou Wang,Tao Wang,Wenxian Guan,Zhi Su,Song Liu,Jinhui Wu
Immunotherapy has emerged as a highly effective therapeutic strategy for cancer treatment. Cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS)-stimulator of interferon gene (STING) pathway activation facilitates tumor-associated macrophage (TAM) polarization toward M1 phenotype, and Mn 2+ are effective agents for this pathway activation. However, the high in vivo degradation rate and toxicity of Mn 2+ hamper clinical application of immunotherapy. Here, this work has newly synthesized and screened manganese porphyrins for Mn 2+ transport, referred to as photo-STING agonists (PSAs), and further encapsulate them into core-shell nanoparticles named Rm@PP-GA with dual specificity for tumor tissue and TAMs. Not only do PSAs achieve higher Mn 2+ delivery efficiency compared to Mn 2+ , but they also generate reactive oxygen species under light exposure, promoting mitochondrial DNA release for cGAS-STING pathway activation. In Rm@PP-GA, globin and red blood cell membranes (Rm) are used for erythrocyte efferocytosis-mimicking delivery. Rm can effectively prolong the in vivo circulation period while globin enables PSAs to be taken up by TAMs via CD163 receptors. After Rm rupture mediated by perfluorohexane in nanoparticles under ultrasonication, drugs are specifically released for TAM repolarization. Further, dendritic cells mature, as well as T lymphocyte infiltrate, both of which favor tumor eradication. Therefore, cancer immunotherapy is optimized by novel PSAs delivered by erythrocyte efferocytosis-mimicking delivery pattern.
研究领域:
肿瘤学
·
免疫疗法
·
药学
·
纳米技术
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
IF 16
Xin-Yu Xiao,Qian-Wei Luo,Wang-Shu Li,Ze-Kun Chen,Zhuo Yang,Ya-Xuan Zhu,Mu-Rong Lei,Fang-Fang Zhuo,Ming Yu,Tian-Tian Wei,Hong-Wei Jin,Zhong-Yao Li,Zhi-Yuan Lu,Zhu-Qing Zhang,Hua Wang,Yong-Cheng Wang,Qing Xia,Wei Yu,Bo Han,Peng-Fei Tu,Ke-Wu Zeng
Nanoparticles bind to proteins in cells selectively and form a protein corona around them. However, the mechanisms of protein conformational changes underlying the interactions between nanoparticles and protein coronas remain poorly understood. In this study, we prepared small molecule self-assembled nanoparticles (Aloin NPs) as a research tool to investigate the allosteric mechanism of protein coronas. Aloin NPs showed a propensity to capture multiple proteins in cells. In particular, Aloin NPs specifically bound to myotrophin (MPTN) as a major protein corona through a multivalent hydrogen bond-mediated nanoprotein interface. Molecular modeling and hydrogen–deuterium exchange mass spectrometry (MS) demonstrated that Aloin NPs promoted a conformational rearrangement of MPTN via a ‘finger-unclasping’ pattern. We then adapted the APEX2 proximity labeling strategy to investigate the conformation-dependent changes in the MPTN interactome and identified peroxiredoxin 6 (PRDX6) as a key substrate protein of MPTN in microglia. Additionally, we observed that MPTN conformational change-dependent PRDX6 release protected the mitochondrial membrane by reducing reactive oxygen species. Consequently, Aloin NPs effectively inhibited the release of mitochondrial DNA to block the downstream cGAS-STING signaling pathway, thereby reprogramming microglial polarization. In translational medicine, Aloin NPs play a role in protecting neurons from microglia-induced inflammatory injury with no significant adverse effects, ultimately improving Parkinson’s disease-associated symptoms. Taken together, our study provides insights into the molecular mechanisms by which nanoparticles regulate the conformational change of protein coronas for human disease therapy.
研究领域:
纳米技术
·
生物化学
·
细胞生物学
·
神经科学
·
免疫学
·
结构生物学
·
药理学
·
转化医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-20
·
IF 14.7
Huang Zhusheng,Huang Shiqian,Song Simin,Ding Yankui,Zhou Hao,Zhang Shaoyin,Weng Lixing,Zhang Ying,Hu Yiqiao,Yuan Ahu,Dai Yunlu,Luo Zhimin,Wang Lianhui
The irradiated tumor itself represents an opportunity to establish endogenous in situ vaccines. However, such in situ cancer vaccination (ISCV) triggered by radiation therapy (RT) alone is very weak and hardly elicits systemic anticancer immunity. In this study, we develop two-dimensional risedronate-manganese nanobelts (RMn-NBs) as an adjuvant for RT to address this issue. RMn-NBs exhibit good T 2 magnetic resonance imaging performance and enhanced Fenton-like catalytic activity, which induces immunogenic cell death. RMn-NBs can inhibit the HIF-1α/VEGF axis to empower RT and synchronously activate the cGAS/STING pathway for promoting the secretion of type I interferon, thereby boosting RT-triggered ISCV and immune checkpoint blockade therapy against primary and metastatic tumors. RMn-NBs as a nano-adjuvant for RT show good biocompatibility and therapeutic efficacy, presenting a promising prospect for cancer radiotherapy and immunotherapy.
研究领域:
癌症研究
·
纳米技术
·
免疫治疗
·
放射治疗
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Han Yan,Wenting Cheng,Siyuan Qin,Jing Zuo,Lei Li,Jing Zhang,Qinxia Chang,Yonghao Yan,Shiqi Wang,Canhua Huang,Haiyuan Zhang
The blood–brain barrier (BBB) caused limited drug accumulation and programmed death-ligand 1 (PD-L1) compromised immunosuppressive microenvironment are bottlenecks in glioblastoma multiforme (GBM) treatment. Herein, we bioengineered a human heavy chain nanoferritin (HTE NPs) for GBM-specific delivery and efficient immunotherapy. To achieve targeted mitochondrial metabolic regulation, we connected triphenylphosphonium (TPP) with the photosensitive agent IR780 to form T780, which self-assembles with esomeprazole magnesium (EM) and human H-ferritin (HFn) to obtain HTE NPs. HFn endows HTE NPs with BBB penetration and specific site-targeting capabilities, thereby enhancing tumor accumulation and pH-responsive release within GBM cells. T780 subsequently induces mitochondrial damage, activating the AMP-dependent protein kinase (AMPK) pathway and blocking the transmission of T-cell inhibitory signals through the phosphorylation of PD-L1, thereby promoting T-cell activation. Moreover, EM inhibits the release of extracellular vesicles (EVs), reducing the inhibitory effect of PD-L1 on circulating T cells. Furthermore, mitochondrial impairment-induced mitochondrial DNA (mtDNA) leakage activates the cGAS-STING signaling pathway, inducing the maturation of dendritic cells (DCs), recruiting supportive immune cells to clear GBM cells, and improving the immunosuppressive microenvironment. Therefore, HTE NPs not only achieve efficient tumor accumulation but also facilitate the activation immune response, providing a promising strategy for the clinical treatment of GBM.
研究领域:
肿瘤学
·
神经科学
·
纳米技术
·
免疫学
✓ 已验证
DOI
高影响因子
JOURNAL OF CONTROLLED RELEASE
·
2021
·
IF 9.776
Cuixia Zheng,Qingling Song,Hongjuan Zhao,Yueyue Kong,Lingling Sun,Xinxin Liu,Qianhua Feng,Lei Wang
The failure of any phase in continuous multi-link immune response process can cause unsatisfactory outcomes, which might be improved by all-cancer-immunity-cycle boosted strategy. Herein, a nanoplatform Mn/CaCO 3 @PL/SLC is developed, which is based on palmitoyl ascorbate (PA)-liposome (PL) loaded with Mn-doped CaCO 3 nanoparticles (Mn/CaCO 3 NPs) and carbonic anhydrase (CAIX) inhibitor SLC-0111. The nanoplatform comprehensively amplifies all immune stages including tumor-associated antigens (TAAs) release and presentation, T cells activation and infiltration , as well as tumor cells destruction. In detail, Mn-triggered lipid peroxidation facilitates TAAs release and subsequent T cells activation to initiate immunity cycle. Additionally, SLC-0111 and PA amplify the infiltration and tumor killing activity of these effector T cells. The former polarizes the immunosuppressive tumor microenvironment to an immune-active phenotype and the latter enhances the function of tumor-infiltrating T lymphocytes. Importantly, Mn augments the all-immunity-cycle by promoting cGAS-STING pathway activation. In summary, the Mn/CaCO 3 @PL/SLC nanoplatform is verified to boost anti-tumor immunity and achieve outstanding immunotherapeutic effects in eradicating tumor and preventing tumor metastasis. Such an all-cancer-immunity-cycle boosted strategy is meaningful for antitumor immunotherapy .
研究领域:
纳米技术
·
免疫学
·
肿瘤学
·
药学
✓ 已验证
DOI
PubMed
高影响因子
Advanced Science
·
2023
·
IF 15.1
Lin Ding,Minli Liang,Yuanyuan Li,Mei Zeng,Meiting Liu,Wei Ma,Fuming Chen,Chenchen Li,Rui L. Reis,Fu-Rong Li,Yanli Wang
Tumor extracellular matrix (ECM) not only forms a physical barrier for T cells infiltration, but also regulates multiple immunosuppressive pathways, which is an important reason for immunotherapy failure. The cyclic guanosine monophosphate-adenosine monophosphate synthase-stimulator of interferon genes (cGAS-STING) pathway plays a key role in activating CD8 + T cells, maintaining CD8 + T cells stemness and enhancing the antitumor effect. Herein, a zinc-organometallic framework vaccine (ZPM@OVA-CpG) prepared by self-assembly, which achieves site-directed release of Zn 2+ in dendritic cell (DC) lysosomes and tumor microenvironment under acidic conditions, is reported. The vaccine actively targets DC, significantly enhances cGAS-STING signal, promotes DC maturation and antigen cross-presentation, and induces strong activation of CD8 + T cells. Meanwhile, the vaccine reaches the tumor site, releasing Zn 2+ , significantly up-regulates the activity of matrix metalloproteinase-2, degrades various collagen components of tumor ECM, effectively alleviates immune suppression, and significantly enhances the tumor infiltration and killing of CD8 + T cells. ZPM@OVA-CpG vaccine not only solves the problem of low antigen delivery efficiency and weak CD8 + T cells activation ability, but also achieves the degradation of tumor ECM via the vaccine for the first time, providing a promising therapeutic platform for the development of efficient novel tumor vaccines.
研究领域:
癌症免疫学
·
药学
·
生物医学工程
·
分子生物学
·
免疫疗法
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD AND CHEMICAL TOXICOLOGY
·
2023
·
IF 4.3
Shilin Zhou,Yuxuan Sun,Kaidi Wang,Xintao Gao,Kehong Dong,Jing Wang,Xiaochen Wu,Chuanlong Guo
Oxaliplatin (OXL) is a first-line drug for the treatment of colon cancer , with excellent efficacy. Intestinal toxicity is a common side effect of OXL, with unclear pathogenesis and a lack of effective treatment strategies. Polydatin (PD) has anti-inflammatory and antioxidant activities and is a potential drug for treating intestinal diseases , but its poor water solubility limits its application. In this study, polyvinylpyrrolidone (PVP) was used as a carrier to prepare nanoparticles loaded with PD (PVP-PD), with a particle size of 92.42 nm and exhibiting sustained release properties. In vitro results showed that PVP-PD protected NCM460 cells from OXL induced injury, mitochondrial membrane potential (MMP) disruption, and accumulation of reactive oxygen species (ROS). The in vivo results demonstrated the protective effect of PVP-PD on intestinal toxicity induced by OXL, such as alleviating weight loss and colon length reduction induced by OXL. Both in vivo and in vitro mechanisms indicated that OXL induced DNA damage and activated the cGAS-STING pathway, further inducing the expression of inflammatory factors such as IL-1β and TNF-α. PVP-PD alleviated the aforementioned changes induced by OXL by inhibiting the DNA damage-cGAS-STING pathway. In summary, our study demonstrated that the DNA damage-cGAS-STING pathway was involved in OXL induced intestinal toxicity, and PVP-PD provided a potential strategy for treating OXL induced intestinal toxicity.
研究领域:
药理学
·
毒理学
·
纳米技术
·
细胞生物学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Weitao Wang,Haitao Wu,Xuan Zhang,Yang Hong,Shi Tao,Xiangjing Cao,Shipeng Wang,Lisha Zha,Zhengbao Zha
Using entire tumor cells or tissues that display both common and patient-specific antigens can potentially trigger a comprehensive and long-lasting anti-tumor immune response. However, the limited immunogenicity, low uptake efficiency, and susceptibility to degradation of whole-component antigens present significant challenges. In this study, we employed tumor lysates (TLs) as whole-component antigens, in conjunction with MgAl-layered double hydroxide (MA) as nanoadjuvants and Mn 2+ as immunostimulants, to create personalized MMAT (Mn 2+ -MA-TLs) nanovaccines. After subcutaneous injection of MMAT nanovaccines, the high local concentrations of TLs and Mn 2+ facilitated the recruitment and activation of antigen-presenting cells (APCs), thereby inducing a robust adaptive immune response. Remarkably, MMAT nanovaccines enabled lysosomal escape, enhanced antigen cross-presentation, and activated the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway in APCs. Furthermore, MMAT nanovaccines, when combined with the anti-TIGIT monoclonal antibody (aTIGIT), an immune checkpoint inhibitor, not only stimulated T-cell-based adaptive anti-tumor immune responses but also activated the NK-cell-based innate anti-tumor immunity, effectively suppressing tumor growth, recurrence, and metastasis. Thus, the ternary MMAT nanovaccines developed here introduced a pioneered paradigm for the rapid preparation of whole-component tumor antigens with nanoadjuvants and immunostimulants into nanovaccines, offering new prospects for clinical immunotherapies.
研究领域:
癌症免疫疗法
·
免疫学
·
纳米医学
·
肿瘤生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）