BIOMACROMOLECULES
·
2025
·
IF 5.4
Xinghan Wu,Wenxin Xu,Xuantao Huang,Nianhua Dan,Yining Chen,Zhengjun Li,Yunbing Wang
Emergency repair of complicated full-thickness abdominal wall defects remains one of the most common and challenging surgical emergencies globally. Here, an integrated polydopamine permeating-cross-linking strategy was innovatively proposed to convert porcine acellular dermal matrix (pADM) into versatile, degradation-resistant biopatches (PDA-pADM) for efficiently repairing full-thickness abdominal wall defects. The strategy significantly addresses the challenge that natural-property improvement and biocompatibility of biomaterials are difficult to balance. Molecularly, dopamine (DA) molecules could fully permeate into the collagen fibers of the acellular dermal matrix and then automatically trigger the interfacial in situ polymerization of dopamine monomers among collagen fibers to achieve the efficient cross-linking of pADM. Surprisingly, the enzymatic durability of the biopatch shows significant improvements, extending the original duration from 3 to 20 d. Comprehensive in vivo experiments have shown that PDA-pADM can effectively promote angiogenesis and inhibit inflammatory response, so as to achieve regeneration and repair of abdominal wall damage.
研究领域:
生物医学工程
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组织工程
·
外科手术
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DOI
PubMed
高影响因子
LIFE SCIENCES
·
2020
·
IF 3.647
Zhuo Wang,Weixiao Nan,Huazhe Si,Shiyong Wang,Haihua Zhang,Guangyu Li
Aims Pantothenic acid (PA) has been applied to treat alopecia, but the underlying mechanism is still unclear. Our study aims to explore the underlying mechanism of PA in regulating hair follicle (HF) growth. Main methods Mink HFs and dermal papilla (DP) cells were isolated and cultured in vitro . HFs and DP cells were treated with 0, 10, 20, 40 μg/ml PA. The effect of PA on HF growth, DP cell proliferation, cell cycle distribution, cell migration, and insulin-like growth factor-1 (IGF-1) and vascular endothelial growth factor (VEGF) expressions in DP cells was measured. Moreover, the effect of PA on inhibitor of DNA binding 3 (ID3)/Notch signaling pathway was analyzed. Subsequently, ID3 was silenced to validate whether ID3/Notch signaling pathway was involved in regulating DP cell proliferation by PA. Key findings Both 20 μg/ml and 40 μg/ml PA promoted HF growth, G1/S transition of DP cells and IGF-1 and VEGF expressions in DP cells, while only 20 μg/ml PA promoted cell viability and the migration of DP cells. Thus 20 μg/ml PA was chosen for the following experiments. PA treatment was found to up-regulate ID3 expression but down-regulate Notch receptor 1 (Notch1) and Notch signaling targets expressions. Furthermore, ID3 knockdown reversed PA-induced cell proliferation and inhibition of Notch1 and Notch signaling targets expressions, indicating that PA-induced DP cell proliferation and inhibition of Notch signaling were mediated via up-regulation of ID3. Significance This study provides an underlying mechanism related to the effect of PA on stimulating DP cell proliferation.
研究领域:
皮肤科
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分子生物学
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细胞生物学
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DOI
PubMed
高影响因子
JOURNAL OF BIOMATERIALS APPLICATIONS
·
2025
·
IF 2.5
Parvez Ahmad,Sangeeta Devi Khangembam,Anil Kumar Gangwar,Vipin Kumar Yadav,Prafull Kumar Singh,Yogendra Singh,Ravi Prakash Goyal,Surendra Pratap Chakraverty,Rajesh Kumar Verma
Biological scaffolds prepared after decellularization are used for the restoration of damaged tissues. A number of chemicals are used for bioscaffold preparation, and some of them damage their composition and architecture. Herein, we investigated the Sapindus mukorossi fruit pericarp extract (SPE) (5%) for decellularization of the caprine dermis. The dermal samples were processed in 5% SPE over magnetic stirrer for 96h at room temperature. The decellularization efficiency of SPE was analyzed by histological examination, DAPI staining, scanning electron microscopy (SEM), quantification of DNA hydroxyproline and hemocompatibility determination. Further, these acellular caprine dermal scaffolds were transplanted on full thickness skin wounds of group III New Zealand white rabbits. The wounds were left open in group I (Sham) and reconstructed by autograft in group II (n = 6 in each group). Continuous agitation of native caprine dermal tissues in 5% SPE for 96 hours leads to complete decellularization without affecting the extracellular matrix architecture. Microscopic observation of decellularized samples did not show any nuclei. DNA quantity was reduced (p < .05) in decellularized samples and scaffolds were found to be hemocompatible. Complete healing was observed on day 28 in groups II and III. No significant difference was noted in IgG in all the groups. Quantitative assessment of MDA showed a significant increase in groups I and II. Our results suggested that the 5% SPE solution effectively decellularized the native caprine dermis and the scaffolds were well tolerated by the animals.
研究领域:
组织工程
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再生医学
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生物材料学
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DOI
PubMed
高影响因子
Nano Convergence
·
2024
·Vol. 11
·期 1
·1-22
·
IF 13.4
Chen Sunfang,Yao Jun,Huo Shicheng,Xu Chennan,Yang Ruting,Tao Danhua,Fang Bin,Ma Gaoxiang,Zhu Zaihua,Zhang Ye,Guo JingJing
Hydrogel-based delivery systems have now emerged as a pivotal platform for addressing chronic tissue defects, leveraging their innate capacity to suppress pathogenic infections and facilitate expedited tissue regeneration. In this work, an injectable hydrogel dressing, termed AgNPs-dermal matrix hydrogel (Ag@ADMH), has been designed to expedite the healing process of wounds afflicted with methicillin-resistant Staphylococcus aureus (MRSA), featuring sustained antibacterial efficacy. The synthesis of the hydrogel dressing entailed a self-assembly process of collagen fibers within an acellular dermal matrix to construct a three-dimensional scaffold, encapsulated with plant polyphenol-functionalized silver nanoparticles (AgNPs). The Ag@ADMH demonstrated exceptional biocompatibility, and enables a sustained release of AgNPs, ensuring prolonged antimicrobial activity. Moreover, the in vitro RT-qPCR analysis revealed that compared with ADMH, Ag@ADMH diminish the expression of iNOS while augmenting CD206 expression, thereby mitigating the inflammatory response and fostering wound healing. Especially, the Ag@ADMH facilitated a reduction in M1 macrophage polarization, as evidenced by a significant decrement in the M1 polarization trend and an enhanced M2/M1 ratio in dermal matrix hydrogels laden with AgNPs, corroborated by confocal microscopy and flow cytometry analyses of macrophage phenotypes. The in vivo assessments indicated that Ag@ADMH minimized fibrous capsule formation. In a full-thickness skin defect model of MRSA infection, the formulation significantly attenuated the inflammatory response by reducing MPO and CD68 expression levels, concurrently promoting collagen synthesis and CD34 expression, pivotal for vasculogenesis, thereby accelerating the resolution of MRSA-infected wounds. These attributes underscore the injectable extracellular matrix hydrogel as a formidable strategy for the remediation and regeneration of infected wounds. Graphical Abstract
研究领域:
生物材料学
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组织工程
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再生医学
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产品关联
DOI
PubMed
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Yan Li,Yunqing Wang,Rongchao Mei,Bingqian Lv,Xizhen Zhao,Liyan Bi,Hui Xu,Lingxin Chen
In vivo drug monitoring is crucial for evaluating the effectiveness and safety of drug treatment. Blood sampling and analysis is the current gold standard but needs professional skills and cannot meet the requirements of point-of-care testing. Dermal interstitial fluid (ISF) showed great potential to replace blood for in vivo drug monitoring; however, the detection was challenging, and the drug distribution behavior in ISF was still unclear until now. In this study, we proposed surface-enhanced Raman spectroscopy (SERS) microneedles (MNs) for the painless and real-time analysis of drugs in ISF after intravenous injection. Using methylene blue (MB) and mitoxantrone (MTO) as model drugs, the innovative core–satellite structured Au@Ag SERS substrate, hydrogel coating over the MNs, rendered sensitive and quantitative drug detection in ISF of mice within 10 min. Based on this technique, the pharmacokinetics of the two drugs in ISF was investigated and compared with those in blood, where the drugs were analyzed via liquid chromatography–mass spectrometry. It was found that the MB concentration in ISF and blood was comparable, whereas the concentration of MTO in ISF was 2–3 orders of magnitude lower than in blood. This work proposed an efficient tool for ISF drug monitoring. More importantly, it experimentally proved that the penetration ratio of blood to ISF was drug-dependent, providing insightful information into the potential of ISF as a blood alternative for in vivo drug detection.
研究领域:
生物医学工程
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分析化学
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药理学
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产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2022
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IF 18.027
Qiqi Yang,Yeyu Wang,Tengfei Liu,Chaoxiong Wu,Jinze Li,Jiale Cheng,Wei Wei,Fan Yang,Liping Zhou,Yufan Zhang,Shuangshuang Yang,Haifeng Dong
Author: Please verify that the changes made to improve the English still retain your original meaning.Detection of microRNA (miRNA) in dermal interstitial fluid (ISF) has emerged as clinically useful in health status monitoring. However, it remains a great challenge owing to the difficult sampling and low abundance. Here, we report a DNA hydrogel microneedles (MNs) array to realize rapid enrichment and sensitive detection of miRNA in ISF. The MNs’ patch consists of methacrylate hyaluronic acid (MeHA) equipped with a smart DNA circuit hydrogels’ system (MeHA/DNA), in which an appropriate miRNA input enables triggering a cascading toehold-mediated DNA displacement reaction to catalytically cleave cross-linking points to generate amplified fluorescence (FL) for miRNA detection. The MeHA/DNA-MNs patch with high mechanical strength can extract adequate ISF in a short time (0.97 ± 0.2 mg in 5 min) in vivo because of its supreme water affinity. Additionally, the cascading toehold-mediated DNA displacement signal amplification reaction allows for sensitive detection of the low-abundant miRNAs down to 241.56 pM. The DNA hydrogels’ MNs present potential for minimally invasive personalized diagnosis and real-time health monitoring in clinical applications.
研究领域:
生物医学工程
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分子生物学
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纳米技术
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临床诊断
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Kexin Zhang,Xiufeng Bai,Zhipeng Yuan,Xintao Cao,Xiangyu Jiao,Yan Qin,Yongqiang Wen,Xueji Zhang
Multicellular spheroids can mimic the in vivo microenvironment and maintain the unique functions of tissues, which has attracted great attention in tissue engineering. However, the traditional culture microenvironment with structural deficiencies complicates the culture and collection process and tends to lose the function of multicellular spheroids with the increase of cell passage. In order to construct efficient and functional multicellular spheroids, in this study, a chitosan/polyvinyl alcohol nanofiber sponge which has an open-cell cellular structure is obtained. The hair follicle (HF) regeneration model was employed to evaluate HF-inducing ability of dermal papilla (DP) multicellular spheroids which formed on the cellular structure nanofiber sponge. Through structural fine-tuning, the nanofiber sponge has appropriate elasticity for the creation of a three-dimensional dynamic microenvironment to regulate cellular behavior. The cellular structure nanofiber sponge tilts the balance of cell–substratum and cell–cell interactions to a state which is more conducive to the formation of controllable multicellular spheroids in a short time. More importantly, it improves the secretory activity of high-passaged dermal papilla cells and restores their intrinsic properties. Experiments using BALB/c nude mice show that cultured DP multicellular spheroids could effectively enhance HF-inducing ability. This novel system provides a simple and efficient strategy for multicellular spheroid formation and HF regeneration.
研究领域:
组织工程学
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再生医学
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生物材料学
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产品关联
DOI
PubMed
高影响因子
Stem Cell Research & Therapy
·
2024
·Vol. 15
·期 1
·1-15
·
IF 7.1
Zhu Yufan,Liu Xu,Chen Xihang,Liao Yunjun
Background Chronic radiation dermatitis (CRD) is a late consequence of radiation with high incidence in patients receiving radiotherapy. Conventional therapies often yield unsatisfactory results. Therefore, this study aimed to explore the therapeutic potential and mechanism of adipose-derived stem cells (ADSCs) for CRD, paving the way for novel regenerative therapies in clinical practice.Methods Clinical CRD skin biopsies were analyzed to character the pathological changes of CRD skin and guided the animal modeling scheme. Subsequently, an in vivo analysisusing mouse CRD models was conducted to explore their effects of ADSCs on CRD, monitoring therapeutic impact for up to 8 weeks. Transcriptome sequencing and histologic sections analysis were performed to explore the potential therapeutic mechanism of ADSCs. Following observing extensive apoptosis of transplanted ADSCs, the therapeutic effect of ADSCs were compared with those of apoptosis-inhibited ADSCs. Multiphoton imaging and analysis of collagen morphologic features were employed to explain how translated ADSCs promote collagen remodeling at the microscopic level based on the contrast of morphology of collagen fibers.Results Following injection into CRD-afflicted skin, ADSCs therapy effectively mitigated symptoms of CRD, including acanthosis of the epidermis, fibrosis, and irregular collagen deposition, consistent with the possible therapeutic mechanism suggested by transcriptome sequencing. Notably, in vivo tracking revealed a significant reduction in ADSCs number due to extensive apoptosis. Inhibiting apoptosis in ADSCs partially tempered their therapeutic effects. Mechanically, analysis of collagen morphologic features indicated that translated ADSCs might promote dermal extracellular matrix remodeling through enlarging, lengthening, crimping, and evening collagen, counteracting the atrophy and rupture caused by irradiation.Conclusion sThis study demonstrated that ADSCs underwent substantial apoptosis upon local skin transplantation, and paradoxically, this apoptosis is essential for their efficacy in promoting the regeneration of late radiation-impaired skin. Mechanically, transplanted ADSCs could promote the remodeling and rearrangement of radiation-damaged dermal collagen matrix.
研究领域:
再生医学
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放射生物学
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干细胞生物学
·
皮肤科
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xiaofei Gao,Xinxiang Chai,Yanzhen Lou,Liming Ruan,Zhengfei He,Yunjie Ni,Linggang Sun,Yanfang Sun,Guohua Jiang
Electrical stimulation (ES) of skin wounds can promote cell proliferation, protein synthesis, inflammatory response, and improve neurological function. In this study, the dynamical cross-linked conductive hydrogels have been developed by integration of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) into porcine acellular dermal matrix (PADM) and oxidized hyaluronic acid (OHA) using dopamine-Fe complex (DA@Fe) as cross-linking agent. The as-obtained conductive composite hydrogels have the characteristics of rapid gelation, excellent deformation ability, high water absorption, and suitable degradation rate. Four-point probes resistivity measurement system has been used to test the electrical properties of the as-obtained hydrogels, and showing their conductivity at 0.207–0.322 S/m. In addition, the developed dynamical cross-linked conductive hydrogels exhibit excellent biocompatibility, thereby inducing cells proliferation and migration. In vivo results show that the resultant composite hydrogel can accelerate wound healing with combination of electrical stimulation (ES) by promoting expression of vascular factor (CD31) and decreasing the expression of tumor necrosis factor-α (TNF-α).
研究领域:
生物材料学
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再生医学
·
组织工程
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2023
·Vol. 24
·期 4
·3123
·
IF 5.6
Fan Li,Hongli Liu,Xiaojing Wu,Zhicheng Song,Haojia Tang,Maohua Gong,Lei Liu,Fuchang Li
Dermal papilla cells (DPCs) play important roles in hair growth regulation. However, strategies to regrow hair are lacking. Here, global proteomic profiling identified the tetrathiomolybdate (TM)-mediated inactivation of copper (Cu) depletion-dependent mitochondrial cytochrome c oxidase (COX) as the primary metabolic defect in DPCs, leading to decreased Adenosine Triphosphate (ATP) production, mitochondrial membrane potential depolarization, increased total cellular reactive oxygen species (ROS) levels, and reduced expression of the key marker of hair growth in DPCs. By using several known mitochondrial inhibitors, we found that excessive ROS production was responsible for the impairment of DPC function. We therefore subsequently showed that two ROS scavengers, N-acetyl cysteine (NAC) and ascorbic acid (AA), partially prevented the TM- and ROS-mediated inhibition of alkaline phosphatase (ALP). Overall, these findings established a direct link between Cu and the key marker of DPCs, whereby copper depletion strongly impaired the key marker of hair growth in the DPCs by increasing excessive ROS production.Keywords:dermal papilla cells;copper;ROS;hair follicle;ALP
研究领域:
细胞生物学
·
分子生物学
·
皮肤病学
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产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2023
·Vol. 24
·期 2
·589-601
·
IF 2.5
Gao Xiaofei,Jiang Guohua,Ruan Liming,Sun Yanfang,Yunusov Khaydar E.,Jing Yanting,Aharodnikau Uladzislau E.,Solomevich Sergey O.
Electrospun nanofibers represent a novel class of scaffold materials that show great potential in wound healing owing to relatively large surface area, better mimicry of native extracellular matrix, adjustable waterproofness and breathability, and programmable drug delivery process. In this work, electrospun polycaprolactone (PCL) and porcine acellular dermal matrix (PADM) composite nanofibrous membranes have been developed by electrospinning technology and inflated into three-dimensional (3D) structural scaffold (PCL-PADM) by gas foaming method. The obtained PCL-PADM has higher thermal stability, hydrophilicity and better cell adhesion compared with PCL. In addition, ε-polylysine (ε-PL) is further attached onto the surface of PADM/PCL to offer its good antibacterial properties. Moreover, the PADM/PCL fibrous scaffolds show excellent cytocompatibility for promoting cell proliferation. In vivo models showed that the resultant PADM/PCL fibrous scaffolds exhibit an accelerating wound healing effect through promoting expression of vascular factor (CD31) and decreasing the expression of tumor necrosis factor-α (TNF-α). These results indicate that the 3D fibrous scaffolds may be a potential wound dressing for wound closure.
研究领域:
生物材料学
·
组织工程学
·
再生医学
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产品关联
DOI
高影响因子
Materials Today Bio
·
2021
·
IF 7.348
D. Cai,S. Chen,B. Wu,J. Chen,D. Tao,Z. Li,Q. Dong,Y. Zou,Y. Chen,C. Bi,D. Zu,L. Lu,B. Fang
Prevention of bacterial infection and reduction of hemorrhage, the primary challenges posed by trauma before hospitalization, are essential steps in prolonging the patient's life until they have been transported to a trauma center. Extracellular matrix (ECM) hydrogel is a promising biocompatible material for accelerating wound closure. However, due to the lack of antibacterial properties, this hydrogel is difficult to be applied to acute contaminated wounds. This study formulates an injectable dermal extracellular matrix hydrogel (porcine acellular dermal matrix (ADM)) as a scaffold for skin defect repair. The hydrogel combines vancomycin, an antimicrobial agent for inducing hemostasis, expediting antimicrobial activity, and promoting tissue repair. The hydrogel possesses a porous structure beneficial for the adsorption of vancomycin. The antimicrobial agent can be timely released from the hydrogel within an hour, which is less than the time taken by bacteria to infest an injury, with a cumulative release rate of approximately 80%, and thus enables a relatively fast bactericidal effect. The cytotoxicity investigation demonstrates the biocompatibility of the ADM hydrogel. Dynamic coagulation experiments reveal accelerated blood coagulation by the hydrogel. In vivo antibacterial and hemostatic experiments on a rat model indicate the healing of infected tissue and effective control of hemorrhaging by the hydrogel. Therefore, the vancomycin-loaded ADM hydrogel will be a viable biomaterial for controlling hemorrhage and preventing bacterial infections in trauma patients.
研究领域:
生物医学工程
·
伤口愈合
·
组织工程
·
药剂学
✓ 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）