Nanomedicine and Nanomaterial Customization

Nature Communications | Chemical Anchoring Reverses Senescence‑Driven Immunotherapy Resistance

(1) Journal Source
Nature Communications

(2) Title
Chemical anchoring of immunotherapeutic drugs within senescent tumor cells overcomes senescence‑driven immunotherapy resistance

(3) Research Insight
Tumor multidrug resistance is often exacerbated by therapy‑induced cellular senescence. Senescent cells rely on efflux pumps to expel drugs and establish an immunosuppressive microenvironment via senescence‑associated secretory phenotype (SASP) factors. SA‑β‑gal, a hallmark enzyme of senescence, offers a targeting handle. However, simply targeting senescent cells fails to simultaneously intervene in efflux pump activity and SASP remodeling. This study focuses on regulating the fate of senescent cell lysosomes, exploring a chemical anchoring strategy that bypasses traditional transporter proteins to fundamentally weaken the drivers of drug resistance.

(4) Research Approach
The team constructs a DN‑Ghcy prodrug system: The Ghcy moiety is activated by SA‑β‑gal to form a bioorthogonal anchoring receptor, covalently locking the DN component onto the lysosomal membrane of senescent tumor cells, thereby blocking efflux pathways. Near‑infrared light irradiation triggers PD‑L1 degradation and simultaneously releases IDO inhibitory activity while disrupting lysosomal integrity. This “anchor‑first, burst‑second” temporal logic achieves synergistic intervention of drug retention and SASP signal reprogramming, precisely targeting the SA‑β‑gal‑positive senescent population.

(5) Key Innovations
🔬 First Lysosomal Protein Chemical Anchoring Strategy: Addresses senescence‑associated multidrug resistance by leveraging SA‑β‑gal catalytic activity for cell‑selective covalent fixation, avoiding the limitations of traditional efflux pump inhibitors.
⚡ Light‑Triggered Cascade Design: The photoresponsive release and immunomodulatory module cascade expands prodrug functionality, offering a new perspective for senescence‑associated microenvironment remodeling.
🔄 Sequential “Anchor‑Then‑Burst” Mechanism: Achieves coordinated drug retention and SASP reprogramming.

(6) Material Development
🧪 Material: DN‑Ghcy prodrug system (DN component + Ghcy moiety).
⚙️ Functions:

Ghcy is activated by SA‑β‑gal, forming a bioorthogonal anchor that covalently attaches to lysosomal membranes of senescent cells.

Blocks drug efflux pathways.

Upon NIR irradiation: degrades PD‑L1, releases IDO inhibitory activity, and disrupts lysosomal integrity.

Enables synergistic drug retention and SASP reprogramming.

(7) Research Implications
💡 Inverse Thinking: Moves from inhibiting efflux pumps to chemically anchoring drugs inside senescent cells, bypassing transporter‑mediated resistance.
🔗 Systematic Integration: Combines enzymatic activation, covalent anchoring, photoresponsive release, and immune modulation in a single prodrug system.
🚀 Platform Potential: This strategy can be extended to other senescence‑associated pathologies requiring selective drug retention and microenvironment remodeling.

🛎️ Suggested Hashtags
#Senescence #DrugResistance #Immunotherapy #ChemicalAnchoring #SAβgal #NatureCommunications #CancerTherapy #Prodrug #Lysosome #IDO #PDL1

Skip the Carousel

1 2 3 4 5 6 7

14 hours ago | [YT] | 0

Nanomedicine and Nanomaterial Customization

Advanced Science | Hydrogel-Delivered Small Extracellular Vesicles Enable Immunorejuvenation for Bone Regeneration

(1) Journal Source
Advanced Science

(2) Title
Small Extracellular Vesicles Delivered by Tissue-Adhesive α-Lipoic Acid Hydrogel Enable Immunorejuvenation for Bone-Interfacial Regeneration

(3) Research Insight
Chronic inflammation leads to bone loss and impairs regeneration at the bone-hard tissue interface. M1 macrophage‑mediated inflammation is a key driver of bone marrow mesenchymal stem cell senescence and bone repair failure. This study constructs a composite delivery system to break this pathological cycle.

(4) Key Innovations
🔬 Dual‑Regulation Strategy: Combines quercetin‑pretreated senescence‑regulating small extracellular vesicles (Sm‑sEVs) with a tissue‑adhesive α‑lipoic acid hydrogel, achieving synergistic regulation of immune microenvironment remodeling and stem cell senescence alleviation to promote bone and related tissue regeneration.

(5) Material Development & Validation
🧪 Material: Tissue‑adhesive α‑lipoic acid hydrogel loaded with Sm‑sEVs.
⚙️ Validation: Enables localized sustained delivery. In vitro tests confirm good biocompatibility, effective vesicle delivery, and maintenance of their bioactivity.

(6) Research Implications
💡 Inverse Thinking: Targets the inflammation‑senescence axis rather than single anti‑inflammation, precisely addressing the core mechanism of bone regeneration impairment.
🔗 Systematic Integration: Combines vesicle delivery with a hydrogel carrier to construct a multi‑component synergistic regeneration‑regulating system.
🚀 Platform Potential: Provides a universal dual‑regulation strategy paradigm for age‑related bone tissue regeneration, expanding cell‑free therapy applications.

🛎️ Suggested Hashtags
#BoneRegeneration #Hydrogel #ExtracellularVesicles #Immunorejuvenation #AdvancedScience #Senescence #TissueEngineering #DrugDelivery #Inflammation #RegenerativeMedicine

Skip the Carousel

1 2 3 4 5 6 7 8

1 day ago | [YT] | 2

Nanomedicine and Nanomaterial Customization

Advanced Science | Hydrogel Millispheres Redistribute Load to Restore Nucleus Pulposus Metabolic Homeostasis

(1) Journal Source
Advanced Science

(2) Title
In Situ Load‑Redistributing Hydrogel Millispheres via Load Redistribution Restore Nucleus Pulposus Metabolic Homeostasis

(3) Research Insight
Abnormal mechanical stress disrupts nucleus pulposus metabolic homeostasis, inducing inflammation and matrix degradation, driving intervertebral disc degeneration. Conventional micron‑sized hydrogel microspheres lack sufficient load‑bearing capacity to improve the locally stress‑concentrated nucleus pulposus microenvironment. This study develops biomimetic hydrogel millispheres that disperse stress in situ through load redistribution, offering a new strategy for intervertebral disc degeneration research.

(4) Key Innovations
🔬 Breaking Size Limitations: Innovatively develops a millimeter‑scale hydrogel millisphere system, achieving synergistic effects of mechanical load distribution and long‑term hydrated lubrication.
⚡ In Situ Stress Dispersion Mechanism: Regulates the inflammatory microenvironment and modulates associated signaling pathways to alleviate mechanical stress‑induced inflammation and apoptosis.

(5) Material Development & Validation
🧪 Material: Dual‑network hydrogel millispheres based on HAMA/ChSMA (hyaluronic acid methacrylate / chondroitin sulfate methacrylate).
⚙️ Validation:

In vitro: Confirms alleviation of the inflammatory microenvironment.

In vivo: Demonstrates promotion of matrix reconstruction.

RNA sequencing identifies the regulated signaling pathways.

(6) Research Implications
💡 Inverse Thinking: Targets the core trigger of stress concentration rather than just downstream inflammation, addressing the root cause.
🔗 Systematic Integration: Combines mechanical properties, biocompatibility, and signaling regulation for multi‑dimensional synergistic action.
🚀 Platform Potential: This stress‑distributing hydrogel system can be extended to other tissue repair scenarios requiring mechanical regulation.

🛎️ Suggested Hashtags
#IntervertebralDisc #Hydrogel #StressRedistribution #NucleusPulposus #TissueEngineering #AdvancedScience #Biomaterials #Mechanobiology #Inflammation #RegenerativeMedicine

Skip the Carousel

1 2 3 4 5 6 7 8 9 10

3 days ago | [YT] | 2

Nanomedicine and Nanomaterial Customization

Advanced Science | Nanozyme Reprograms Mitochondrial ROS for Self‑Sustaining Catalytic Immunotherapy

(1) Journal Source
Advanced Science

(2) Title
A Hydrogen‑Releasing Nanozyme Designs a Mitochondrial ROS Amplifier for Self‑Sustaining Catalytic Immunotherapy

(3) Research Insight
Conventional nanocatalytic therapy is limited by insufficient intratumoral hydrogen peroxide substrate, rapid clearance by antioxidant defenses, and severe oxidative stress‑induced mitochondrial collapse, making durable treatment difficult. This study focuses on mitochondrial functional reprogramming by integrating hydrogen release, photothermal effects, and catalytic activity to construct a self‑sustaining oxidative storm system.

(4) Key Innovations
🔬 Dual‑Phase Hydrogen Regulation Strategy: Shifts from the traditional “acute damage” model to a biphasic approach: first transiently scavenging local ROS to protect mitochondrial structure, then reprogramming mitochondria into endogenous ROS generators. This creates a positive feedback loop with exogenous catalytic ROS, achieving persistent oxidative stress for tumor killing.

(5) Material Development & Validation
🧪 Material: Hydrogen‑doped rhodium‑palladium alloy (RhPd‑H) nanozyme. It exhibits stable hydrogen storage at room temperature and controlled hydrogen release under near‑infrared light. Rhodium doping modulates the electronic structure to achieve highly selective peroxidase‑like activity, avoiding wasteful hydrogen peroxide consumption. Structural characterization and performance testing verify its stability and catalytic properties.

(6) Research Implications
💡 Inverse Thinking: Abandons the “complete mitochondrial destruction” paradigm, instead using hydrogen‑mediated “functional reprogramming” to unlock sustained ROS generation.
🔗 Systematic Integration: Combines photothermal, catalytic, and hydrogen‑release functions into a spatiotemporally controllable multimodal synergistic therapeutic system.
🚀 Platform Potential: Provides a novel paradigm for nanocatalytic immunotherapy by reinforcing oxidative stress and immune activation through mitochondrial regulation.

🛎️ Suggested Hashtags
#Nanozyme #MitochondrialROS #CatalyticImmunotherapy #HydrogenTherapy #AdvancedScience #Nanomedicine #CancerTherapy #Photothermal #ROS #DrugDelivery

Skip the Carousel

1 2 3 4 5 6 7

4 days ago | [YT] | 0

Nanomedicine and Nanomaterial Customization

Advanced Materials | Calcium Shuttling Nanoagonist Reprograms Anti-Tumor Immunity

(1) Journal Source
Advanced Materials (IF 26.8)

(2) Title
Sustained Endogenous Calcium Shuttling via ER‑Mitochondria Crosstalk Generates Potent Anti‑Tumor Immunity

(3) Research Insight
To achieve precise manipulation of intracellular calcium homeostasis, this study proposes an organelle crosstalk paradigm. By harnessing innate calcium dynamics to drive calcium vortex‑mediated anti‑tumor immunity, it overcomes the limitations of traditional exogenous calcium‑dependent strategies, enabling customizable subcellular bioenergetic perturbation without systemic toxicity.

(4) Key Innovations
🔬 First ER‑Mitochondria Calcium Shuttling Mechanism: Triggers endogenous calcium flux to remodel the tumor immune microenvironment.
⚡ Beyond Exogenous Calcium Dependency: Achieves safe and precise intracellular ion manipulation.
🔄 Modular Nanoagonist Design: Enables ultrasound‑responsive controllable activation.

(5) Material Development & Validation
🧪 Material: Modular peptide‑programmed nanoagonist. Under ultrasound irradiation, it induces ER stress and opens mitochondrial calcium uniporters, activating calcium enrichment and calcium‑sensitive organelle calcium influx. Dual organelle‑targeted dysfunction activates caspase‑dependent apoptotic pathways, releasing damage‑associated molecular patterns (DAMPs), promoting dendritic cell maturation and cytotoxic T cell infiltration, while simultaneously reprogramming macrophages. In tumor models, it achieves primary tumor ablation and metastatic growth suppression.

(6) Research Implications
💡 Inverse Thinking: Moves beyond exogenous calcium supplementation by targeting endogenous calcium homeostasis, opening a new direction for immunotherapy.
🔗 Systematic Integration: Combines organelle crosstalk, ion regulation, and immune activation for multi‑mechanism synergistic anti‑tumor effects.
🚀 Platform Potential: This transferable strategy provides a new paradigm for ion‑regulation‑based immunotherapy.

🛎️ Suggested Hashtags
#CancerImmunotherapy #CalciumSignaling #OrganelleCrosstalk #Nanoagonist #AdvancedMaterials #UltrasoundResponsive #ERMitochondria #ImmuneReprogramming #Nanomedicine #DrugDelivery

Skip the Carousel

1 2 3 4 5 6 7 8 9

6 days ago | [YT] | 0

Nanomedicine and Nanomaterial Customization

Advanced Materials | Eel‑Inspired Self‑Powering Hydrogel Nerve Conduit for Peripheral Nerve Repair

(1) Journal Source
Advanced Materials

(2) Title
Eel‑Inspired Self‑Powering Hydrogel Nerve Conduit: A Fully Biodegradable Scaffold for Peripheral Nerve Repair

(3) Research Insight
To address the power supply limitations of electrical stimulation for nerve regeneration, this study draws inspiration from the bioelectric mechanism of electric eels. It designs and develops an eel‑inspired ionic hydrogel battery (EE‑iHB) integrated into a hydrogel nerve conduit. Through multi‑layer structural design and layer‑by‑layer self‑assembly, the conduit’s performance is optimized. Both in vitro experiments and in vivo rat sciatic nerve injury models validate the conduit’s efficacy and mechanisms in peripheral nerve repair.

(4) Key Innovations
🔬 First Eel‑Inspired Implantable Self‑Powering Ionic Battery: Overcomes the power supply limitations of electrical stimulation for nerve repair.
⚡ Synergistic Optimization: Achieves simultaneous enhancement of mechanical properties and electrical conductivity while maintaining full biodegradability.
🔄 Mechanistic Elucidation: Clarifies that the battery’s microcurrent activates Schwann cells, guides oriented axonal growth, and promotes myelination.

(5) Material Development
🧪 Material: Chitosan (CS), chondroitin sulfate (CSA), hydroxyethyl cellulose (HEC).
⚡ Functions:

Exhibits excellent biocompatibility and ionic conductivity.

Generates stable and sustained bioelectrical signals.

Flexible hydrogel structure enables seamless integration with nerve tissue, ensuring safety and long‑term reliability for nerve repair applications.

🛎️ Suggested Hashtags
#NerveRepair #Hydrogel #BioelectricMaterial #PeripheralNerve #Biodegradable #AdvancedMaterials #TissueEngineering #SchwannCells #IonicBattery #RegenerativeMedicine

Skip the Carousel

1 2 3 4 5 6 7 8

1 week ago | [YT] | 3

Nanomedicine and Nanomaterial Customization

Advanced Materials | Calcium Shuttling Nanoagonist Reprograms Anti-Tumor Immunity

(1) Journal Source
Advanced Materials (IF 26.8)

(2) Title
Sustained Endogenous Calcium Shuttling via ER‑Mitochondria Crosstalk Generates Potent Anti‑Tumor Immunity

(3) Research Insight
To achieve precise manipulation of intracellular calcium homeostasis, this study proposes an organelle crosstalk paradigm. By harnessing innate calcium dynamics to drive calcium vortex‑mediated anti‑tumor immunity, it overcomes the limitations of traditional exogenous calcium‑dependent strategies, enabling customizable subcellular bioenergetic perturbation without systemic toxicity.

(4) Key Innovations
🔬 First ER‑Mitochondria Calcium Shuttling Mechanism: Triggers endogenous calcium flux to remodel the tumor immune microenvironment.
⚡ Beyond Exogenous Calcium Dependency: Achieves safe and precise intracellular ion manipulation.
🔄 Modular Nanoagonist Design: Enables ultrasound‑responsive controllable activation.

(5) Material Development & Validation
🧪 Material: Modular peptide‑programmed nanoagonist. Under ultrasound irradiation, it induces ER stress and opens mitochondrial calcium uniporters, activating calcium enrichment and calcium‑sensitive organelle calcium influx. Dual organelle‑targeted dysfunction activates caspase‑dependent apoptotic pathways, releasing damage‑associated molecular patterns (DAMPs), promoting dendritic cell maturation and cytotoxic T cell infiltration, while simultaneously reprogramming macrophages. In tumor models, it achieves primary tumor ablation and metastatic growth suppression.

(6) Research Implications
💡 Inverse Thinking: Moves beyond exogenous calcium supplementation by targeting endogenous calcium homeostasis, opening a new direction for immunotherapy.
🔗 Systematic Integration: Combines organelle crosstalk, ion regulation, and immune activation for multi‑mechanism synergistic anti‑tumor effects.
🚀 Platform Potential: This transferable strategy provides a new paradigm for ion‑regulation‑based immunotherapy.

🛎️ Suggested Hashtags
#CancerImmunotherapy #CalciumSignaling #OrganelleCrosstalk #Nanoagonist #AdvancedMaterials #UltrasoundResponsive #ERMitochondria #ImmuneReprogramming #Nanomedicine #DrugDelivery

Skip the Carousel

1 2 3 4 5 6 7 8 9

1 week ago | [YT] | 1

Nanomedicine and Nanomaterial Customization

Nature Communications | Biomimetic Nanodisc Selectively Activates Non‑Canonical STING Pathway for Cancer Immunotherapy

(1) Journal Source
Nature Communications

(2) Title
A biomimetic nanodisc system selectively activates type I interferons by nonclassical STING pathway for cancer immunotherapy

(3) Research Insight
To address low STING expression in tumor cells and impaired endoplasmic reticulum‑Golgi trafficking, a cell‑membrane‑biomimetic nanodisc system is constructed to selectively activate type I interferons via a non‑canonical pathway.

(4) Key Innovations
🔬 Bypassing ER/Golgi: Directly activates the STING‑IRF3‑IFN axis in the cytosol without triggering NF‑κB‑driven inflammatory signals, thereby remodeling the tumor immune microenvironment.

(5) Material Development & Validation
🧪 Material: STING‑overexpressing membrane fragments prepared by membrane display technology, self‑assembled into nanodiscs and co‑loaded with cGAMP and heparin.
⚙️ Function: Enables stable intracellular activation and tumor‑targeted enrichment.

(6) Research Implications
💡 Inverse Thinking: Establishes a new paradigm of direct cytosolic activation, overcoming classical trafficking dependency.
🔗 Systematic Integration: Forms a closed‑loop chain from material assembly to site‑specific activation and immune regulation.
🚀 Platform Potential: Offers a universal immunotherapeutic strategy for STING‑deficient tumors.

🛎️ Suggested Hashtags
#CancerImmunotherapy #STING #Biomimetic #Nanodisc #TypeIInterferon #NatureCommunications #DrugDelivery #TumorMicroenvironment #NonCanonical #Nanomedicine

Skip the Carousel

1 2 3 4 5 6

1 week ago | [YT] | 0

Nanomedicine and Nanomaterial Customization

Bioactive Materials | Plant Exosome Hydrogel Regulates Macrophage Efferocytosis to Heal Diabetic Wounds

(1) Journal Source
Bioactive Materials

(2) Title
Activating the cellular scavenger: A bioactive hydrogel promotes diabetic wounds via plant exosome-like nanovesicles enhanced macrophage efferocytosis

(3) Research Insight
Diabetic ulcer repair is persistently hindered by immune microenvironment dysregulation, among which impaired macrophage clearance of apoptotic cell debris (efferocytosis) represents a core bottleneck leading to prolonged inflammation. Existing exosome therapies predominantly rely on animal‑derived cell cultures, facing challenges of scalability and stability. Plant‑derived nanovesicles (G-ELNs) have emerged as promising alternatives due to their inherent immunomodulatory potential, high yield, and low cost. However, their efferocytosis regulatory mechanisms in chronic wounds remain unclear, and suitable local sustained‑release carriers are lacking.

(4) Research Approach
This study extracts G-ELNs from grape pulp. Using transcriptomics, it identifies the key target MERTK and confirms that G-ELNs activate this receptor to drive macrophage polarization toward the reparative M2c phenotype, enhancing efferocytosis efficiency by over 90%. To overcome enzymatic degradation, G-ELNs are loaded into a photocrosslinked decellularized matrix hydrogel (SM). Leveraging its microporous topology and controlled degradation, spatiotemporally targeted delivery is achieved. In a diabetic rat full‑thickness defect model, this system preferentially activates MERTK‑dependent efferocytosis during the inflammatory phase to block the inflammatory cascade, while promoting orderly collagen crosslinking and vascular network maturation during the proliferative phase.

(5) Key Innovations
🔬 First Combination of Plant‑Derived Nanovesicles with Matrix Hydrogel: Establishes a dual‑regulation “metabolite‑driven” paradigm for chronic wound immune modulation.
⚙️ Novel Mechanism Beyond miRNA: Reveals that L‑malic acid in G-ELNs synergistically enhances M2c polarization and efferocytosis via the GPR4‑STAT3 axis, offering a new target for natural product‑mediated immune remodeling.
🔄 Precision Delivery System: The photocrosslinking properties and synchronized degradation profile of the hydrogel enhance delivery precision, demonstrating favorable clinical translational potential.

(6) Material Development & Validation
🧪 Material: G-ELNs derived from grape pulp; photocrosslinked decellularized matrix hydrogel (SM) as delivery carrier.
⚙️ Function:

G-ELNs activate MERTK, driving M2c macrophage polarization and enhancing efferocytosis efficiency by >90%.

SM hydrogel enables spatiotemporal targeted delivery via microporous topology and controlled degradation.

Validated in diabetic rat full‑thickness defect models: blocks inflammatory cascade in early phase, promotes orderly collagen crosslinking and vascular maturation in proliferative phase.

(7) Research Implications
💡 Plant‑Derived Alternative: Offers a scalable, low‑cost alternative to animal‑derived exosomes with distinct mechanistic advantages.
🔗 Metabolite‑Driven Immunomodulation: Uncovers L‑malic acid/GPR4‑STAT3 axis as a novel pathway for macrophage reprogramming, expanding the scope of natural product‑mediated immune regulation.
🚀 Translational Potential: The photocrosslinked hydrogel platform combines precision delivery with clinical practicality, providing a versatile strategy for chronic wound management.

🛎️ Suggested Hashtags
#DiabeticUlcer #PlantExosomes #Macrophage #Efferocytosis #Hydrogel #BioactiveMaterials #WoundHealing #Immunomodulation #ChronicWounds #TranslationalMedicine

Skip the Carousel

1 2 3 4 5 6 7 8

2 weeks ago | [YT] | 1

Nanomedicine and Nanomaterial Customization

Biomaterials | Liver-Targeting Fluorescent Nanomedicine: A New Approach for Non-Alcoholic Fatty Liver Disease

(1) Journal Source
Biomaterials (IF 12.9)

(2) Title
A Liver-Targeting Fluorescent Nanomedicine for the Treatment of Non-Alcoholic Fatty Liver Disease

(3) Research Insight
Non-alcoholic fatty liver disease (NAFLD) is characterized by abnormal hepatic lipid accumulation. This study develops a nanomedicine, LIGHT, which possesses liver-targeting properties, intrinsic fluorescence, and high affinity for intracellular lipid droplets. Following intravenous administration, LIGHT accumulates in the liver, reduces lipid deposition in steatotic cell models, enables real-time lesion monitoring in animal models, and restores liver morphology and function, offering a theranostic platform for the disease.

(4) Key Innovations
🔬 Integrated Theranostic Nanoplatform: Constructs a liver-targeting nanomedicine that combines diagnosis, therapy, and real-time efficacy monitoring into a single system, achieving “targeted image-guided therapy,” simplifying treatment workflows, and providing a novel strategy for NAFLD intervention.

(5) Material Development & Validation
🧪 Material: LIGHT nanomedicine (Lipid droplet‑Guided + Hepatic Targeting), featuring intrinsic fluorescence, liver-targeting capability, and high lipid droplet affinity.
⚙️ Validation: Functional validation conducted in free fatty acid‑induced steatotic cell models and NAFLD mouse models.

(6) Research Implications
💡 Inverse Design Thinking: Breaks the traditional separation of diagnosis and therapy, adopting an integrated approach to address disease intervention challenges.
🔗 Systematic Integration: Combines targeting, imaging, and therapeutic functions into a single platform for multi‑step协同 intervention.
🚀 Platform Potential: Offers a universal design paradigm for theranostic applications in lipid metabolism‑related diseases.

🛎️ Suggested Hashtags
#NAFLD #Nanomedicine #Theranostics #LiverDisease #LipidMetabolism #Biomaterials #FluorescentImaging #DrugDelivery #TargetedTherapy #MetabolicDisease

Skip the Carousel

1 2 3 4 5 6 7

2 weeks ago | [YT] | 0