Pyroptosis‐Mediated Synergistic Photodynamic and Photothermal Immunotherapy Enabled by a Tumor‐Membrane‐Targeted Photosensitive Dimer

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(25)

Published: March 15, 2023

Overcoming the resistance to apoptosis and immunosuppression of tumor cells is a significant challenge in augmenting effect cancer immunotherapy. Pyroptosis, lytic programmed cell-death pathway unlike apoptosis, considered type immunogenic cell death (ICD) that can intensify ICD process cells, releasing dramatically increased tumor-associated antigens damage-associated molecular patterns promote Herein, membrane-targeted aggregation-induced emission photosensitive dimer found be able achieve highly efficient under synergistic photodynamic photothermal therapy. The efficiently produce type-I reactive oxygen species (ROS) by therapy hypoxic tissue, leading pyroptosis direct membrane damage, which further reinforced its effect. Furthermore, enhanced based on completely eliminate primary seventh day treatment also boost systemic antitumor immunity generating immune memory, demonstrated superior therapeutic effects both solid tumors metastatic when healing 4T1 mouse models with poor immunogenicity.

Language: Английский

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Self-Assembled Metallacage with Second Near-Infrared Aggregation-Induced Emission for Enhanced Multimodal Theranostics

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(28), P. 12825 - 12833

Published: July 5, 2022

The construction of supramolecular coordination complexes (SCCs) featuring prominent cancer theranostic functions is an appealing yet significantly challenging task. In this study, we rationally designed and facilely constructed a prism-like metallacage C-DTTP with efficient fluorescence emission in the second near-infrared (NIR-II) region through assembly aggregation-induced emission-active four-arm ligand 90° Pt acceptors Pt(PEt3)2(OTf)2. held longest maximum wavelength (1005 nm) compared those previously reported SCCs up to now exhibited both high photothermal conversion efficiency (39.3%) superior reactive oxygen species generation behavior precursor ligand. vitro vivo assessments demonstrated that metallacage-loaded nanoparticles excellent biocompatibility stability were capable simultaneously affording precise tumor diagnosis complete elimination by means NIR-II fluorescence/photothermal dual imaging-guided photodynamic/photothermal synergistic therapy.

Language: Английский

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A Noble AuPtAg‐GOx Nanozyme for Synergistic Tumor Immunotherapy Induced by Starvation Therapy‐Augmented Mild Photothermal Therapy

Advanced Science, Journal Year: 2022, Volume and Issue: 9(31)

Published: Sept. 25, 2022

Abstract Notwithstanding immune checkpoint blocking (ICB) therapy has made eminent clinical breakthroughs, overcoming immunologically “cold” tumors remains challenging. Here, a cascade potentiated nanomodulator AuPtAg‐GOx is engineered for boosting responsiveness. Upon 1064 nm laser irradiation, AuPtAg‐mediated mild photothermal (PTT) activates cytotoxic T lymphocytes and reverses the immunogenic tumor microenvironment. Further, to amplify thermal sensitivity of cells, glucose oxidase (GOx) introduced suppress production heat shock proteins, thereby promoting therapy. Complementarily, AuPtAg nanozymes with catalase‐like activity can ameliorate hypoxia, significantly improving GOx activity. As result, combination self‐augmented ability PD‐L1 antibody further escalate antitumor efficacy. The AuPtAg‐GOx‐based synergistic starvation therapy, PTT, immunotherapy enhancement strategy be favorable tool effectively kill cancer cells.

Language: Английский

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Anti‐Quenching NIR‐II J‐Aggregates of Benzo[c]thiophene Fluorophore for Highly Efficient Bioimaging and Phototheranostics

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(20)

Published: March 3, 2023

Molecular fluorophores with the second near-infrared (NIR-II) emission hold great potential for deep-tissue bioimaging owing to their excellent biocompatibility and high resolution. Recently, J-aggregates are used construct long-wavelength NIR-II emitters as optical bands show remarkable red shifts upon forming water-dispersible nano-aggregates. However, wide applications in fluorescence imaging impeded by limited varieties of J-type backbone serious quenching. Herein, a bright benzo[c]thiophene (BT) J-aggregate fluorophore (BT6) anti-quenching effect is reported highly efficient phototheranostics. The BT manipulated have Stokes shift over 400 nm aggregation-induced (AIE) property conquering self-quenching issue fluorophores. Upon BT6 assemblies an aqueous environment, absorption 800 1000 boosted more than 41 26 folds, respectively. In vivo visualization whole-body blood vessel imaging-guided phototherapy results verify that NPs agent cancer This work develops strategy precisely properties biomedical applications.

Language: Английский

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NIR-II light in clinical oncology: opportunities and challenges

Nature Reviews Clinical Oncology, Journal Year: 2024, Volume and Issue: 21(6), P. 449 - 467

Published: May 1, 2024

Language: Английский

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Rational Design of Polymethine Dyes with NIR‐II Emission and High Photothermal Conversion Efficiency for Multimodal‐Imaging‐Guided Photo‐Immunotherapy

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(12)

Published: Jan. 11, 2023

Phototheranostics have emerged and flourished as a promising pattern for cancer theranostics owing to their precise photoinduced diagnosis therapeutic meet the demands of precision medicine. The information effect are directly determined by fluorescence imaging ability photothermal conversion efficiency (PCE) phototheranostic agents. Hence, how balance competitive radiative nonradiative processes agents is key factor evaluate effect. Herein, molecules named ICRs with high photostaibility rationally designed, exhibiting emission in second near-infrared window (NIR-II, 1000-1700 nm) PCE, which related strong donor-acceptor (D-A) interaction reorganization energy Noteworthily, ICR-Qu stronger D-A large-sized conjugated unit encapsulated nanoparticles exhibits PCE (81.1%). In addition, ICR-QuNPs used (FLI), photoacoustic (PAI), (PTI) guide deep-tissue photonic hyperthermia, achieving removal inhibition breast cancer. Furthermore, combined α-PD-1, show huge potential be facile efficient tool photo-immunotherapy. More importantly, this study not only reports an "all-in-one" polymethine-based agent, but also sheds light on exploration versatile organic future practical applications.

Language: Английский

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A Water‐Soluble AIEgen for Noninvasive Diagnosis of Kidney Fibrosis via SWIR Fluorescence and Photoacoustic Imaging

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(50)

Published: Oct. 12, 2022

Early diagnosis of renal fibrosis is crucially significant on account its worldwide prevalent tendency. Optical imaging in the near-infrared window has been recognized as an appealing technique for timely detection dysfunction. However, formulating a contrast agent that allows early monitoring and concurrently renally clearable normal group still challenging. Herein, nanosized fluorophore with aggregation-induced emission (AIE) features, namely AIE-4PEG550 NPs, well-tailored amenable to longitudinal visualization progression specifically early-stage via short-wave infrared (SWIR, 900-1700 nm) fluorescence photoacoustic bimodal imaging. The small size (≈26 nm), filtrable molecular weight (3.3 kDa), high clearance efficiency (93.1 ± 1.7% excretion through kidneys within 24 h), outstanding performance, good biocompatibility, together make NPs remarkably impressive far superior clinical diagnostic assays. finding this study would provide blueprint next generation agents extent fibrosis.

Language: Английский

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J‐Aggregation Strategy toward Potentiated NIR‐II Fluorescence Bioimaging of Molecular Fluorophores

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)

Published: Aug. 1, 2023

Molecular fluorophores emitting in the second near-infrared (NIR-II, 1000-1700 nm) window with strong optical harvesting and high quantum yields hold great potential for vivo deep-tissue bioimaging high-resolution biosensing. Recently, J-aggregates are harnessed to engineer long-wavelength NIR-II emitters show unique superiority tumor detection, vessel mapping, surgical navigation, phototheranostics due their bathochromic-shifted bands required slip-stacked arrangement aggregation state. However, despite preliminary progress of theoretical study structure-property relationships, further paradigms remain scarce lack on aggregated fashion. In this effort, how utilize specific molecular structure form packing motifs J-type exciton coupling is emphatically elucidated. First, several regulating strategies achieve containing intermolecular interactions external conditions positively summarized deeply analyzed. Then, recent reports theranostics systematically provide a clear reference direction promoting development organic fluorophores. Eventually, prospective efforts ameliorating clinical practices outlined.

Language: Английский

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A NIR‐II AIEgen‐Based Supramolecular Nanodot for Peroxynitrite‐Potentiated Mild‐Temperature Photothermal Therapy of Hepatocellular Carcinoma

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(19)

Published: Feb. 13, 2023

Abstract Compared to conventional photothermal therapy (PTT) which requires hyperthermia higher than 50 °C, mild‐temperature PTT is a more promising antitumor strategy with much lower phototoxicity neighboring normal tissues. However, the therapeutic efficacy of always restricted by thermoresistance cancer cells. To address this issue, supramolecular drug nanocarrier fabricated co‐deliver nitric oxide (NO) and agent DCTBT NIR‐II aggregation‐induced emission (AIE) characteristic for PTT. NO can be effectively released from nanocarriers in intracellular reductive environment capable simultaneously producing reactive oxygen species (ROS) upon 808 nm laser irradiation. The generated ROS further react produce peroxynitrite (ONOOˉ) bearing strong oxidization nitration capability. ONOOˉ inhibit expression heat shock proteins (HSP) reduce cells, necessary achieve excellent DCTBT‐based at mild temperature (<50 °C). performance ONOOˉ‐potentiated validated on subcutaneous orthotopic hepatocellular carcinoma (HCC) models. This research puts forward an innovative overcome PTT, provides new inspirations explore ONOOˉ‐sensitized tumor strategies.

Language: Английский

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Noncancerous disease-targeting AIEgens

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(3), P. 1024 - 1067

Published: Jan. 1, 2023

Schematic diagram of noncancerous disease-targeting AIEgens.

Language: Английский

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