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Activation of endogenous neurogenesis and angiogenesis by basic fibroblast growth factor-chitosan gel in an adult rat model of ischemic stroke

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Neural Regeneration Research 2024年第2期19卷 409-415页

作者： Hongmei Duan Shulun li Peng Hao Fei Hao Wen Zhao Yudan Gao hui {2. Yiming Gu yang Lv Xinjie Bao Kin Chiu Kwok-Fai So zhaoyang yang xiaoguang li Department of Neurobiology School of Basic Medical SciencesCapital Medical UniversityBeijingChina Beijing Key Laboratory for Biomaterials and Neural Regeneration School of Engineering MedicineBeihang UniversityBeijingChina Department of Epidemiology and Statistics School of Public Health and ManagementNingxia Medical UniversityYinchuanNingxia Hui Autonomous RegionChina Department of Physical Education Capital University of Economics and BusinessmBeijingChina Department of Neurosurgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Psychology State Key Lab of Brain and Cognitive SciencesThe University of Hong KongHong Kong Special Administration RegionChina Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive sciences The University of Hong KongHong Kong Special Administration RegionChina Center for Brain science and Brain-Inspired Intelligence Guangdong-Hong Kong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Biomedical engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijingChina

Attempts have been made to use cell transplantation and biomaterials to promote cell proliferation,differentiation,migration,and survival,as well as angiogenesis,in the context of brain ***,whether bioactive materials can repair the damage caused by ischemic stroke by activating endogenous neurogenesis and angiogenesis is still *** this study,we applied chitosan gel loaded with basic fibroblast growth factor to the stroke cavity 7 days after ischemic stroke in *** gel slowly released basic fibroblast growth factor,which improved the local microenvironment,activated endogenous neural stem/progenitor cells,and recruited these cells to migrate toward the penumbra and stroke cavity and subsequently differentiate into neurons,while enhancing angiogenesis in the penumbra and stroke cavity and ultimately leading to partial functional *** study revealed the mechanism by which bioactive materials repair ischemic strokes,thus providing a new strategy for the clinical application of bioactive materials in the treatment of ischemic stroke.

关键词： adult endogenous neurogenesis angiogenesis basic fibroblast growth factor-chitosan gel chitosan functional recovery ischemic stroke neural stem cell newborn neuron

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Effects of the CNTF-collagen gel-controlled delivery system on rat neural stem/progenitor cells behavior

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science china({2.fe sciences) 2010年第4期53卷 504-510页

作者： yang zhaoyang1, qiao hui2.& li xiaoguang1,{2., beihang University, Beijing 100191, china 2.ublic Heath school, Ningxia medical University, Yinchuan 750004, china 3Beijing Institute for Neuroscience, Capital medical University, Beijing 100069, china 1. school of biological {2. and medical engineering Beihang University Beijing 100191 China2. Public Heath School Ningxia Medical University Yinchuan 750004 China3. Beijing Institute for Neuroscience Capital Medical University Beijing 100069 China

The injury of central nervous system (CNS) usually causes the cavity formation. Although transplantation of neural stem/precursor cells (NSPCs) into the lesioned area of CNS has been shown to be implicated in the functional restoration, the therapeutic result is limited by the poor survival of NSPCs as well as their insufficient proliferation and differentiation abilities. Type-1 collagen is considered as a candidate scaffold or drug delivery system to overcome the aforementioned obstacle. This study observed the effects of the CNTF (ciliary neurotrophic factor)-collagen gel-controlled delivery system and daily addition of soluble-form CNTF on the NSPC survival, migration, proliferation and differentiation. The results showed that, within 12.h of the initial co-culture, CNTF was released in a burst pattern, then the CNTF-collagen gel-controlled delivery system stably released CNTF for up to 12.d. The cell viability test, together with immunohistochemistry, RT-PCR and Western blotting, showed that the CNTF-collagen gel-controlled delivery system supported the NSPCs seeded on the surface of collagen gel survival and facilitated their migration and proliferation. The daily addition of soluble-form CNTF to the medium had similar effects to the CNTF-collagen gel-controlled delivery system, but large quantities of soluble-form CNTF were consumed during the entire process. Taken together, the CNTF-collagen gel-controlled delivery system not only provides a physical scaffold for the transplanted NSPCs to adhere and migrate, but also facilitates the NSPC survival, growth and proliferation, simultaneously reducing the consumption of the expensive growth factors. This system may be used to enhance the microenvironment in the lesioned area of CNS.

关键词： spinal cord neural stem/progenitor cells control release type-1 collagen CNTF

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MnO_(2.-coated nanodiamond-driven photodynamic therapy for enhanced antitumor effect by addressing hypoxia and glutathione depletion

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Particuology 2024年第9期92卷 305-315页

作者： Jicheng Cui Dongmei Zhang hui qiao Zeyu Yan Wenxia Zhang Yingqi {2. Key Laboratory of Chemical Biology and Molecular engineering of Ministry of Education Institute of Molecular ScienceShanxi UniversityTaiyuan030006China Taiyuan Central Hospital Taiyuan030009China school of Chemistry and Chemical engineering Shanxi UniversityTaiyuan030006China

The generation of reactive oxygen species(ROS)at the tumor site to induce destruction is emerging as a novel strategy for cancer treatment,which involves photodynamic therapy(PDT).Nevertheless,tumors typically create a hypoxic environment and are equipped with an endogenous antioxidant defense system that could potentially impede the efficiency of the therapeutic *** overcome these drawbacks,herein,a tumor microenvironment-responsive the ND-PAA-CD-Ce6@MnO_(2.(NPCC@M)delivery system was fabricated by disulfide bond coupling chlorin e6(Ce6)to nanodiamond(ND)and further wrapped by MnO_(2.nanosheets to facilitate *** use of disulfide bond not only stabilizes Ce6 in the blood circulation to prevent premature leakage,but also destroys the antioxidant barrier of overexpressed glutathione(GSH)in tumor ***,the outer MnO_(2.was rapidly degraded by the endogenous hydrogen peroxide(H_(2.O_(2.)in the acidic pH and GSH within the tumor cells,which leads to an abundance of O_(2.and while increases the level of 1O_(2.under laser *** results eventually broke the redox homeostasis and attenuate hypoxia,thereby inducing apoptosis and necrosis of tumor *** in vitro and in vivo biological effect has revealed a good biosafety profile and a high tumor suppression *** a novel ND-based system with tumor microenvironment-modulating capability to elevate oxygen content and promote GSH consumption in tumor cells opens new opportunities for enhanced ROS treatment paradigms.

关键词： Nanodiamond Photodynamic Chlorin e6 MnO_(2. Tumor suppression

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Metabolomic Analysis in Saliva and Different Brain Regions of Older Mice with Postoperative Delirium Behaviors

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Biomedical and Environmental sciences 2024年第2期37卷 133-145页

作者： liU Xiao CAO Ying liN Xiao Wan GAO Dan {2. MIAO hui hui li Tian Zuo Department of Anesthesiology Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China

Objective Postoperative delirium(POD)has become a critical challenge with severe consequences and increased incidences as the global population ***,the underlying mechanism is yet *** study aimed to explore the changes in metabolites in three specific brain regions and saliva of older mice with postoperative delirium behavior and to identify potential non-invasive *** Eighteen-month-old male C57/BL6 mice were randomly assigned to the anesthesia/surgery or control *** tests were conducted 2. h before surgery and 6,9,and 2. h after *** C3(C3)and S100 calcium-binding protein B protein(S100beta)levels were measured in the hippocampus,and a metabolomics analysis was performed on saliva,hippocampus,cortex,and amygdala *** In total,43,33,38,and 14 differential metabolites were detected in the saliva,hippocampus,cortex,and amygdala,respectively.“Pyruvate”“alpha-linolenic acid”and“2.oleoyl-1-palmitoy-snglycero-3-phosphocholine”are enriched in one common pathway and may be potential non-invasive biomarkers for *** changes were observed in the three brain regions,with the upregulation of 1-methylhistidine and downregulation of *** Dysfunctions in energy metabolism,oxidative stress,and neurotransmitter dysregulation are implicated in the development of *** identification of changes in the level of salivary metabolite biomarkers could aid in the development of noninvasive diagnostic methods for POD.

关键词： Metabolomic Postoperative delirium(POD) Mechanism biological marker

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Nomogram based on liver stiffness and spleen area with ultrasound for posthepatectomy liver failure:A multicenter study

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World Journal of Gastroenterology 2024年第27期30卷 3314-3325页

作者： Guang-Wen Cheng Yan Fang li-Yun Xue Xiao-hui {2. Xue-Qi li Yan Zhang Jia Guo Xiao-Yan Xie Hong Ding Department of Ultrasound Huashan HospitalFudan UniversityShanghai 200040China Department of Ultrasound Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of medical Ultrasonics Institute of Diagnostic and Interventional UltrasoundSun Yat-sen University First Affiliated HospitalGuangzhou 510080Guangdong ProvinceChina Institute of Ultrasound in Medicine and engineering Shanghai Cancer CenterShanghai 200040China Department of Ultrasound Eastern Hepatobiliary Surgical HospitalSecond Military Medical UniversityShanghai 200433China Department of Ultrasound National Clinical Research Center for Aging and MedicineHuashan HospitalFudan UniversityShanghai 200040China

BACKGROUND liver stiffness(LS)measurement with two-dimensional shear wave elastography(2.-SWE)correlates with the degree of liver fibrosis and thus indirectly reflects liver function *** size of the spleen increases due to tissue proliferation,fibrosis,and portal vein congestion,which can indirectly reflect the situation of liver fibrosis/*** was reported that the size of the spleen was related to posthepatectomy liver failure(PHLF).So far,there has been no study combining 2.-SWE measurements of LS with spleen size to predict *** prospective study aimed to investigate the utility of 2.-SWE assessing LS and spleen area(SPA)for the prediction of PHLF in hepatocellular carcinoma(HCC)patients and to develop a risk prediction *** To investigate the utility of 2.-SWE assessing LS and SPA for the prediction of PHLF in HCC patients and to develop a risk prediction *** This was a multicenter observational study prospectively analyzing patients who underwent hepatectomy from October 2.2. to March *** 1 wk before partial hepatectomy,ultrasound examination was performed to measure LS and SPA,and blood was drawn to evaluate the patient’s liver function and other *** absolute shrinkage and selection operator logistic regression and multivariate logistic regression analysis was applied to identify independent predictors of PHLF and develop a *** performance was validated *** diagnostic performance of the nomogram was evaluated with receiver operating charac-teristic curve compared with the conventional models,including the model for end-stage liver disease(MELD)score and the albumin-bilirubin(ALBI)*** A total of 562.HCC patients undergoing hepatectomy(500 in the training cohort and 62.in the validation cohort)were enrolled in this *** independent predictors of PHLF were LS,SPA,range of resection,blood loss,international normalized ratio,and total *** diagnostic performanc

关键词： Shear-wave elastography Spleen Hepatectomy Posthepatectomy liver failure Hepatocellular carcinoma

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OSW-1 triggers necroptosis in colorectal cancer cells through the RIPK1/RIPK3/MLKL signaling pathway facilitated by the RIPK1- p62.SQSTM1 complex

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World Journal of Gastroenterology 2024年第15期30卷 2155-2174页

作者： Nan Wang Chao-yang li Teng-Fei Yao Xiao-Dan Kang {2.-Shu Guo Clinical Laboratory Medicine The First Affiliated Hospital of Dalian Medical UniversityDalian 116023Liaoning ProvinceChina The Institute of Integrative Medicine Dalian Medical UniversityDalian 116044Liaoning ProvinceChina The Institute of Laboratory Medicine Dalian Medical UniversityDalian 116044Liaoning ProvinceChina Central Laboratory The First Affiliated Hospital of Dalian Medical UniversityDalian 116011Liaoning ProvinceChina

BACKGROUND Necroptosis has emerged as a novel molecular pathway that can be targeted by chemotherapy agents in the treatment of ***-1,which is derived from the bulbs of Ornithogalum saundersiae Baker,exerts a wide range of pharmaco-logical *** To explore whether OSW-1 can induce necroptosis in colorectal cancer(CRC)cells,thereby expanding its range of clinical *** We performed a sequence of functional experiments,including Cell Counting Kit-8 assays and flow cytometry analysis,to assess the inhibitory effect of OSW-1 on CRC *** utilized quantitative proteomics,employing tandem mass tag label-ing combined with liquid chromatography-tandem mass spectrometry,to analyze changes in protein *** bioinformatic analysis was conducted to elucidate the biological processes associated with the identified *** electron microscopy(TEM)and immunofluorescence studies were also performed to examine the effects of OSW-1 on ***,western blotting,siRNA experiments,and immunoprecipitation were employed to evaluate protein interactions within CRC *** The results revealed that OSW-1 exerted a strong inhibitory effect on CRC cells,and this effect was accompanied by a necroptosis-like morphology that was observable via ***-1 was shown to trigger necroptosis via activation of the RIPK1/RIPK3/MLKL ***,the accumulation of p62.SQSTM1 was shown to mediate OSW-1-induced necroptosis through its interaction with *** We propose that OSW-1 can induce necroptosis through the RIPK1/RIPK3/MLKL signaling pathway,and that this effect is mediated by the RIPK1-p62.SQSTM1 complex,in CRC *** results provide a theoretical foundation for the use of OSW-1 in the clinical treatment of CRC.

关键词： OSW-1 Necroptosis RIPK1 P62.SQSTM1 Colorectal cancer

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Responses of osteoblasts under varied tensile stress types induced by stretching basement materials

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International Journal of Smart and Nano Materials 2024年第2期15卷 279-295页

作者： Xuezheng Geng qiao li Yan Yao lizhen Wang Yubo Fan Beijing Advanced Innovation Center for Biomedical engineering School of Biological Science and Medical EngineeringKey Laboratory of Biomechanics and Mechanobiology(Beihang University)Ministry of EducationBeijingChina school of engineering Medicine Beihang UniversityBeijingChina

Osteoblasts are mechanosensitive *** stress with different conditions,including loading time,frequency,magnitude,*** cause varied responses in ***,it was not clarified that the effect of the loading types on the *** this study,we focused on the effect of varied tensile stress types on osteoblasts,including isotropic stretch,biaxial stretch,and uniaxial stretch with the negative ratio of transverse strain to axial strain(NR)-1,0,and 0.2.*** proliferation was determined to be most efficient when stimulated by 6%strain at a frequency of 1 Hz and a negative value of 0 for 1 h/*** varied strain resulted in a thickening of the F-actin cytoskeleton and a thinning of the *** flattening caused Yes-associated protein(YAP)to be transported to the *** was suggested that the influence of loading types on the mechanobiology responses must be *** mechanism of cell mechanical sensitivity under varied loading types was explored,which would provide good sugges-tions for designing microstructures to control deformation patterns in bone tissue engineering.

关键词： MC3T3-E1 tensile stress negative poisson’s ratio cell proliferation YAP

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Identification and Validation of SLC9A2.as A Potential Tumor Suppressor in Colorectal Cancer:Integrating Bioinformatics Analysis with Experimental Confirmation

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Current medical science 2024年第3期44卷 529-544页

作者： Yan-min liU Tie-cheng yang Xiao-chang FANG li-jie yang li-wen SHI Hua-qiao WANG Ting-ting DOU lin SHU Tian-liang CHEN Jun HU Xiao-ming YU Xuan-fei li Department of Gastroenterology the Central Hospital of WuhanKey Laboratory for Molecular Diagnosis of Hubei ProvinceTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430014China Department of Gastrointestinal Surgery Zhongnan Hospital of Wuhan UniversityWuhan430071China Clinical medical Research Center of Peritoneal Cancer of Wuhan Wuhan430071China Hubei Provincial Clinical Research Center for Cancer Hubei Key Laboratory of Tumor Biological Behavi Wuhan430071China Department of General Surgery Taihe HospitalHubei University of MedicineShiyan442000China Department of Gastrointestinal Surgery Huangshi Central HospitalAffiliated Hospital of Hubei Polytechnic UniversityWuhan435001China

Objective To uncover the mechanisms underlying the development of colorectal cancer(CRC),we applied bioinformatic analyses to identify key genes and experimentally validated their possible roles in CRC onset and *** We performed Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis on differentially expressed genes(DEGs),constructed a protein-protein interaction(PPI)network to find the top 10 hub genes,and analyzed their expression in colon adenocarcinoma(COAD)and rectum adenocarcinoma(READ).We also studied the correlation between these genes and immune cell infiltration and prognosis and validated the expression of SLC9A2.in CRC tissues and cell lines using qRT-PCR and Western *** experiments were conducted in vitro to investigate the effects of SLC9A2.on tumor growth and *** We found 130 DEGs,with 45 up-regulated and 85 down-regulated in *** analysis indicated that these DEGs were primarily enriched in functions related to the regulation of cellular pH,zymogen granules,and transmembrane transporter *** pathway analysis revealed that the DEGs played pivotal roles in pancreatic secretion,rheumatoid arthritis,and the IL-17 signaling *** identified 10 hub genes:CXCL1,SLC2.A3,CXCL2.MMP7,MMP1,SLC9A2.SLC4A4,CLCA1,CLCA4,and *** enrichment analysis showed that these hub genes were predominantly involved in the positive regulation of *** expression analysis revealed that CXCL1,CXCL2.MMP1,and MMP7 were highly expressed in CRC,whereas CLCA1,CLCA4,SLC4A4,SLC9A2.SLC2.A3,and ZG16 were expressed at lower *** analysis revealed that 5 key genes were significantly associated with the prognosis of *** mRNA and protein expression levels of SLC9A2.were markedly reduced in CRC tissues and cell ***,SLC9A2.overexpression in SW480 cells led to a notable inhibition of cell proliferation,migration,and *** blotting analysis revealed tha

关键词： SLC9A2 colorectal cancer bioinformatic analysis biomarkers immune infiltrate

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TRPM2.Mediates Hepatic Ischemia–Reperfusion Injury via Ca^(2.) -Induced Mitochondrial lipid Peroxidation through Increasing ALOX12.Expression

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Research 2024年第1期2023卷 351-368页

作者： Cheng Zhong Jing yang Yiyin Zhang Xiaoxiao Fan yang Fan Ning Hua Duguang {2. Shengxi Jin Yirun {2. Peng Chen Yongle Chen Xiaobo Cai Yi Zhang {2.nhua Jiang Wei yang Pei{2.n Yu hui {2.n Department of General Surgery Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouP.R.China Department of Biophysics and Department of Neurology of the Fourth Affiliated Hospital Zhejiang University School of MedicineHangzhou 310000P.R.China Department of Physiology and Pathophysiology and Sino-UK Joint Laboratory of Brain Function and Injury of Henan Province Xinxiang Medical University453003 XinxiangHenanP.R.China school of Biomedical {2.s Faculty of Biological SciencesUniversity of LeedsLS29JT LeedsUK Department of Toxicology and Department of medical Oncology of Second Affiliated Hospital Zhejiang University School of MedicineHangzhouP.R.China Zhejiang engineering Research Center of Cognitive Healthcare Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou 310020P.R.China College of Biomedical engineering and Instrument {2. Zhejiang UniversityHangzhou 310058P.R.China

Hepatic ischemia–reperfusion(IR)injury is a serious clinical problem that complicates liver resection and *** recent advances in understanding of the pathophysiology of hepatic IR injury,effective interventions and therapeutics are still ***,we examined the role of transient receptor potential melastatin 2.TRPM2.,a Ca^(2.)-permeable,non-selective cation channel,in mediating hepatic IR *** data showed that TRPM2.deficiency attenuated IR-induced liver dysfunction,inflammation,and cell death in ***,RNA sequencing analysis indicated that TRPM2.induced IR injury occurs via ferroptosis-related ***,as a ferroptosis inducer,(1S,3R)-RSL3 treatment induced mitochondrial dysfunction in hepatocytes and a TRPM2.inhibitor suppressed ***,TRPM2.mediated calcium influx caused mitochondrial calcium accumulation via the mitochondrial Ca^(2.)-selective uniporter and increased the expression level of arachidonate 12.lipoxygenase(ALOX12.,which results in mitochondrial lipid peroxidation during hepatic IR ***,hepatic IR injury-induced ferroptosis was obviously relieved by a TRPM2.inhibitor or calcium depletion,both in vitro and in ***,these findings demonstrate a crucial role for TRPM2.mediated ferroptosis in hepatic IR injury via increased Ca^(2.)-induced ALOX12.expression,indicating that pharmacological inhibition of TRPM2.may provide an effective therapeutic strategy for hepatic IR injury-related diseases,such as during liver resection and transplantation.

关键词： TRPM2 lipid Hepatic

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Editorial Commentary:Copper Homeostasis in Neurodegenerative Diseases

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Current medical science 2024年第1期44卷 244-245页

作者： Ying-hui li Kun WANG Institute for Translational Medicine The Affiliated Hospital of Qingdao UniversityCollege of MedicineQingdao UniversityQingdao 266021China

Copper,as an essential trace nutrient,plays a crucial role in biological processes such as mitochondrial respiration,antioxidant stress response,and the synthesis of ***,cellular copper concentrations are maintained at very low levels,a pattern also observed in cancer cells to prevent adverse consequences of copper overload,such as *** involves copper dependency,accumulation of lipidated proteins,and a reduction in Fe-S cluster proteins[1].Various neurodegenerative diseases are associated with imbalances in copper homeostasis.

关键词： copper Copper consequences

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