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Nanozyme‑Engineered Hydrogels for Anti‑Inflammation and Skin Regeneration

Nano-Micro Letters 2024年第6期16卷 127-179页

作者： Amal George Kurian Rajendra K.Singh Varsha Sagar Jung‑Hwan Lee hae‑won kim Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan 31116Republic of Korea Department of Nanobiomedical Science&BK21 NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan 31116Republic of Korea Department of Biomaterials Science School of DentistryDankook UniversityCheonan 31116Republic of Korea UCL Eastman‑Korea Dental Medicine Innovation Centre Dankook UniversityCheonan 31116Republic of Korea Cell and Matter Institute Dankook UniversityCheonan 31116Republic of Korea Mechanobiology Dental Medicine Research Center Dankook UniversityCheonan 31116Republic of Korea

Inflammatory skin disorders can cause chronic scarring and functional impairments,posing a significant burden on patients and the healthcare *** therapies,such as corticosteroids and nonsteroidal anti-inflammatory drugs,are limited in efficacy and associated with adverse ***,nanozyme(NZ)-based hydrogels have shown great promise in addressing these ***-based hydrogels possess unique therapeutic abilities by combining the therapeutic benefits of redox nanomaterials with enzymatic activity and the water-retaining capacity of *** multifaceted therapeutic effects of these hydrogels include scavenging reactive oxygen species and other inflammatory mediators modulating immune responses toward a pro-regenerative environment and enhancing regenerative potential by triggering cell migration and *** review highlights the current state of the art in NZ-engineered hydrogels(NZ@hydrogels)for anti-inflammatory and skin regeneration *** also discusses the underlying chemo-mechano-biological mechanisms behind their ***,the challenges and future directions in this ground,particularly their clinical translation,are *** insights provided in this review can aid in the design and engineering of novel NZ-based hydrogels,offering new possibilities for targeted and personalized skin-care therapies.

关键词： Nanozymes Hydrogels ROS scavenging Anti-inflammation Skin regeneration

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Materials and extracellular matrix rigidity highlighted in tissue damages and diseases:Implication for biomaterials design and therapeutic targets

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Bioactive Materials 2023年第2期20卷 381-403页

作者： Jae Hee Park Seung Bin Jo Jung-Hwan Lee hae-Hyoung Lee Jonathan CKnowles hae-won kim Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan31116Republic of Korea Department of Nanobiomedical Science and BK21 NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan31116Republic of Korea Department of Biomaterials Science College of DentistryDankook UniversityCheonan31116Republic of Korea Cell&Matter Institute Dankook UniversityCheonan31116Republic of Korea Mechanobiology Dental Medicine Research Center Dankook UniversityCheonan31116Republic of Korea UCL Eastman-Korea Dental Medicine Innovation Centre Dankook UniversityCheonan31116Republic of Korea Division of Biomaterials and Tissue Engineering UCL Eastman Dental InstituteUniversity College LondonRoyal Free HospitalRowland Hill StreetLondonNW32PFUnited Kingdom

Rigidity(or stiffness)of materials and extracellular matrix has proven to be one of the most significant extracellular physicochemical cues that can control diverse cell behaviors,such as contractility,motility,and spreading,and the resultant pathophysiological *** 2D materials engineered with tunable rigidity have enabled researchers to elucidate the roles of matrix biophysical cues in diverse cellular events,including migration,lineage specification,and mechanical ***,the recent findings accumulated under 3D environments with viscoelastic and remodeling properties pointed to the importance of dynamically changing rigidity in cell fate control,tissue repair,and disease ***,here we aim to highlight the works related with material/matrix-rigidity-mediated cell and tissue behaviors,with a brief outlook into the studies on the effects of material/matrix rigidity on cell behaviors in 2D systems,further discussion of the events and considerations in tissue-mimicking 3D conditions,and then examination of the in vivo findings that concern material/matrix *** current discussion will help understand the material/matrix-rigidity-mediated biological phenomena and further leverage the concepts to find therapeutic targets and to design implantable materials for the treatment of damaged and diseased tissues.

关键词： Matrix rigidity Biophysical cue Cell and tissue engineering 3D biomaterials conditions Therapeutic targets

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Multifunctional GelMA platforms with nanomaterials for advanced tissue therapeutics

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Bioactive Materials 2022年第2期7卷 267-295页

作者： Amal George Kurian Rajendra KSingh Kapil DPatel Jung-Hwan Lee hae-won kim Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan31116Republic of Korea Department of Nanobiomedical Science&BK21 NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan31116Republic of Korea Biomaterials and Tissue Engineering UCL Eastman Dental InstituteLondonWC1X8LDUK Department of Biomaterials Science School of DentistryDankook UniversityCheonan31116Republic of Korea UCL Eastman-Korea Dental Medicine Innovation Centre Dankook UniversityCheonan31116Republic of Korea Cell&Matter Institute Dankook UniversityCheonan31116Republic of Korea Department of Regenerative Dental Medicine College of DentistryDankook UniversityCheonan31116Republic of Korea Mechanobiology Dental Medicine Research Center Dankook UniversityCheonan31116Republic of Korea

Polymeric hydrogels are fascinating platforms as 3D scaffolds for tissue repair and delivery systems of therapeutic molecules and *** others,methacrylated gelatin(GelMA)has become a representative hydrogel formulation,finding various biomedical *** efforts on GelMA-based hydrogels have been devoted to combining them with bioactive and functional nanomaterials,aiming to provide enhanced physicochemical and biological properties to *** benefits of this approach are multiple:i)reinforcing mechanical properties,ii)modulating viscoelastic property to allow 3D printability of bio-inks,iii)rendering electrical/magnetic property to produce electro-/magneto-active hydrogels for the repair of specific tissues(e.g.,muscle,nerve),iv)providing stimuli-responsiveness to actively deliver therapeutic molecules,and v)endowing therapeutic capacity in tissue repair process(e.g.,antioxidant effects).The nanomaterial-combined GelMA systems have shown significantly enhanced and extraordinary behaviors in various tissues(bone,skin,cardiac,and nerve)that are rarely observable with *** we systematically review these recent efforts in nanomaterials-combined GelMA hydrogels that are considered as next-generation multifunctional platforms for tissue *** approaches used in GelMA can also apply to other existing polymeric hydrogel systems.

关键词： GelMA hydrogel Nanomaterials Multifunctional Therapeutics Tissue repair

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Dendritic cell-mimicking scaffolds for ex vivo T cell expansion

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Bioactive Materials 2023年第3期21卷 241-252页

作者： Hye Sung kim Tzu-Chieh Ho Moshe J.Willner Michael W.Becker hae-won kim Kam W.Leong Department of Biomedical Engineering Columbia UniversityNew YorkNYUSA Institute of Tissue Regeneration Engineering Dankook UniversityCheonanRepublic of Korea Wilmot Cancer Institute University of Rochester Medical CenterRochesterNYUSA Department of Regenerative Dental Medicine College of DentistryDankook UniversityCheonanRepublic of Korea Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonanRepublic of Korea Mechanobiology Dental Medicine Research Center Dankook UniversityCheonanRepublic of Korea Department of Systems Biology Columbia University Irving Medical CenterNew YorkNY10032USA

We propose an ex vivo T cell expansion system that mimics natural antigen-presenting cells(APCs)for adoptive cell therapy(ACT).Microfiber scaffolds coated with dendritic cell(DC)membrane replicate physicochemical properties of dendritic cells specific for T cell activation such as rapid recognition by T cells,long duration of T cell tethering,and DC-specific co-stimulatory *** DC membrane-coated scaffold is first surface-immobilized with T cell stimulatory ligands,anti-CD3(αCD3)and anti-CD28(αCD28)antibodies,followed by adsorption of releasable interleukin-2(IL-2).The scaffolds present both surface and soluble cues to T cells ex vivo in the same way that these cues are presented by natural APCs in *** demonstrate that the DC-mimicking scaffold promotes greater polyclonal expansion of primary human T cells as compared toαCD3/αCD28-func-tionalized *** importantly,major histocompatibility complex molecules derived from the DC membrane of the scaffold allow antigen-specific T cell expansion with target cell-specific killing *** addition,most of the expanded T cells(~97%)can be harvested from the scaffold by density gradient ***,the DC-mimicking scaffold offers a scalable,modular,and customizable platform for rapid expansion of highly functional T cells for ACT.

关键词： Adoptive cell therapy Ex vivo T cell expansion Cytotoxic T cell Dendritic cell membrane Cell membrane coating Scaffold

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Spatiotemporal control of CRISPR/Cas9 gene editing

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Signal Transduction and Targeted Therapy 2021年第7期6卷 2088-2105页

作者： Chenya Zhuo Jiabin Zhang Jung-Hwan Lee Ju Jiao Du Cheng Li Liu hae-won kim Yu Tao Mingqiang Li laboratory of Biomaterials and Translational Medicine Center for NanomedicineThe Third Affiliated HospitalSun Yat-sen UniversityGuangzhouChina lnstitute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonanSouth Korea Department of Nuclear Medicine The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouChina PCFM Lab of Ministry of Education School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhouChina Department of Gynecology and Obstetrics The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Liver Disease Research GuangzhouChina

The clustered regularly interspaced short palindromic repeats(CRISPRJ/associated protein 9(CRISPR/Cas9)gene editing technology,as a revolutionary breakthrough in genetic engineering,offers a promising platform to improve the treatment of various genetic and infectious diseases because of its simple design and powerful ability to edit different loci ***,failure to conduct precise gene editing in specific tissues or cells within a certain time may result in undesirable consequences,such as serious off-target effects,representing a critical challenge for the clinical translation of the ***,some emerging strategies using genetic regulation,chemical and physical strategies to regulate the activity of CRISPR/Cas9 have shown promising results in the improvement of spatiotemporal ***,in this review,we first summarize the latest progress of these advanced strategies involving cell-specific promoters,small-molecule activation and inhibition,bioresponsive delivery carriers,and optical/thermal/ultrasonic/magnetic ***,we highlight the advantages and disadvantages of various strategies and discuss their obstacles and limitations in clinical ***,we propose viewpoints on directions that can be explored to further improve the spatiotemporal operability of CRISPR/Cas9.

关键词： activation breakthrough consequences

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Nanotherapeutics for regeneration of degenerated tissue infected by bacteria through the multiple delivery of bioactive ions and growth factor with antibacterial/angiogenic and osteogenic/odontogenic capacity

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Bioactive Materials 2021年第1期6卷 123-136页

作者： Ahmed El-Fiqi Nandin Mandakhbayar Seung Bin Jo Jonathan C.Knowles Jung-Hwan Lee hae-won kim Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan31116Republic of Korea Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan31116Republic of Korea Glass Research Department National Research CentreCairo12622Egypt Division of Biomaterials and Tissue Engineering UCL Eastman Dental Institute256 Grays Inn RoadLondonWC1X 8LDUK The Discoveries Centre for Regenerative and Precision Medicine UCL CampusLondonUK Department of Biomaterials Science School of DentistryDankook UniversityCheonan31116Republic of Korea UCL Eastman-Korea Dental Medicine Innovation Centre Dankook UniversityCheonan31116Republic of Korea

Therapeutic options are quite limited in clinics for the successful repair of infected/degenerated *** the prevalent treatment is the complete removal of the whole infected tissue,this leads to a loss of tissue function and serious *** the dental pulp infection,as one of the most common dental problems,was selected as a clinically relevant case to regenerate using a multifunctional nanotherapeutic *** this,a mesoporous bioactive glass nano-delivery system incorporating silicate,calcium,and copper as well as loading epidermal growth factor(EGF)was designed to provide antibacterial/pro-angiogenic and osteo/odontogenic multiple therapeutic ***-functionalized Cu-doped bioactive glass nanospheres(Cu-BGn)were prepared to be 50–60 nm in size,mesoporous,positive-charged and *** Cu-BGn could release bioactive ions(copper,calcium and silicate ions)with therapeutically-effective *** Cu-BGn treatment to human umbilical vein endothelial cells(HUVEC)led to significant enhancement of the migration,tubule formation and expression of angiogenic gene(*** endothelial growth factor,VEGF).Furthermore,the EGF-loaded Cu-BGn(EGF@Cu-BGn)showed pro-angiogenic effects with antibacterial activity against ***,a pathogen commonly involved in the pulp *** note,under the co-culture condition of HUVEC with ***,the secretion of VEGF was *** addition,the osteo/odontogenic stimulation of the EGF@Cu-BGn was evidenced with human dental pulp stem *** local administration of the EGF@Cu-BGn in a rat molar tooth defect infected with *** revealed significant in vivo regenerative capacity,highlighting the nanotherapeutic uses of the multifunctional nanoparticles for regenerating infected/damaged hard tissues.

关键词： Nanotherapeutics Mesoporous bioglass nanospheres Copper ion/Growth factor Antibacterial/angiogenesis Osteogenesis/odontogenesis

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A Probabilistic Method of Characterizing Transit Times for Quantum Particles in Non-Stationary States

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Journal of Modern Physics 2013年第8期4卷 1080-1090页

作者： hae-won kim Karl Sohlberg Department of Chemistry Drexel University Philadelphia PA USA Department of Chemistry Penn State Abington Abington PA USA

We present a probabilistic approach to characterizing the transit time for a quantum particle to flow between two spatially localized states. The time dependence is investigated by initializing the particle in one spatially localized “orbital” and following the time development of the corresponding non-stationary wavefunction of the time-independent Hamiltonian as the particle travels to a second orbital. We show how to calculate the probability that the particle, initially localized in one orbital, has reached a second orbital after a given elapsed time. To do so, discrete evaluations of the time-dependence of orbital occupancy, taken using a fixed time increment, are subjected to conditional probability analysis with the additional restriction of minimum flow rate. This approach yields transit-time probabilities that converge as the time increment used is decreased. The method is demonstrated on cases of two-state oscillations and shown to produce physically realistic results.

关键词： Conditional Probability Non-Stationary Quantum Particle Transit Time

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Effect of Iv Hboc-201 on Coronary Hemodynomlcs and Function in Patients Undergoing Elective Pci

Effect of Iv Hboc-201 on Coronary Hemodynomlcs and Function ...

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第十一届国际人工血液大会

作者： hae won kim COR-001 Study Group Biopure Corporation CambridgeMA 02141U.S.A.

＜正＞Hemoglobin based oxygen carriers（HBOCs）are potential therapeutic adjuncts to patients with acute coronary syndrome undergoing elective percutaneous coronary intervention（PCI）. Feasibility of intravenous（Ⅳ...

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Do brood parasitic Common Cuckoos develop brood patches during the breeding season?

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Avian Research 2024年第3期15卷 363-368页

作者： Jun-Seo Go hae-Ni kim Sue-Jeong Jin Myeong-Chan Cha Heesoo Lee Jin-won Lee Korea Institute of Ornithology&Department of Biology Kyung Hee University02447SeoulRepublic of Korea Bird Research SaeZiP 12504YangpyeongRepublic of Korea

Many birds develop brood patches on their ventral apterium under hormonal regulation to effectively transmit body heat to eggs during *** developed patch has several characteristics,including de-feathering,vascularization,and ***,little is known about whether avian brood parasites that do not incubate their eggs exhibit brood patch development during the breeding *** this study,we measured the size of the ventral apterium in 114 Common Cuckoos(Cuculus canorus)captured in the field throughout the breeding season and examined the appearance of the ventral apterium to confirm the development of brood *** also examined whether morphological traits and various factors correlated with the size of the ventral apterium(sternal apterium and abdominal apterium)and how it changed during the breeding *** found no clear signs of brood patch development in Common Cuckoos captured throughout the breeding season,indicating that they likely did not develop brood patches on the ventral apterium during this *** also found that ventral apterium size was positively correlated with wing length and body *** addition,Common Cuckoos with newly growing feathers on the boundary of the ventral apterium with pteryla were frequently observed as seasons progressed to the *** conclusion,Common Cuckoos exhibit neither brood patch development nor the vestigial characteristics of ancestral brood patches,except for the growth of feathers on boundary the ventral *** studies examining brood patches across different groups of avian brood parasites are valuable for enhancing our understanding of the developmental and physiological adaptations of avian brood parasites.

关键词： Brood parasitism Brood patch Common Cuckoo Pterylosis Re-feathering Ventral apterium

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The effects of EMLA cream on pain responses of preschoolers

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Open Journal of Nursing 2013年第8期3卷 1-4页

作者： Se Na Ahn Joohyun Lee hae won kim Sook Bin Im Byung Sun Cho Hye Young Ahn College of Nursing Eulji University Daejeon South Korea Department of Nursing Eulji University Hospital Daejeon South Korea Department. of Surgery College of Medicine Eulji University Daejeon South Korea The Research Institute of Nursing Science College of Nursing Seoul National University Seoul South Korea

The aim of present study was to assess the effects of a eutectic mixture of topical anesthetics (EMLA cream) on pain responses of preschoolers during venipuncture. The pain responses were reported by children, nurses, and the children’s mothers. The pre- and post-test-designed study, which included a non-equivalent control group, was carried out in a pediatric unit at E University Hospital in South Korea. Pain responses during venipuncture were measured by the self-reporting of the children using the Face Pain Rating Scale (FPRS), the Procedure Behavior Checklist by nurses (PBCL), the Visual Analog Scale (VAS) by mothers, in addition to measurements of the children’s pulse rate and level of oxygen saturation. EMLA cream was effective in decreasing the pain responses of the children as assessed by FPRS, PBCL, and VAS scores. However, pulse rate and level of oxygen saturation of the children during venipuncture were not significantly different between the two groups. EMLA cream could be a useful option for reducing pain in preschool children during invasive procedures.

关键词： Venipuncture EMLA Cream Pain Preschooler

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