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opportunities and challenges of CD47-targeted therapy in cancer immunotherapy

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oncology Research 2024年第1期32卷 49-60页

作者： QIUQIANG CHEN XUEJUN GUo WENXUE ma Key laboratory for Translational Medicine The First Affiliated HospitalHuzhou University School of MedicineHuzhou313000China Department of Hematology Puyang Youtian General HospitalPuyang457001China Department of Medicine Moores Cancer CenterSanford Stem Cell InstituteUniversity of California San DiegoLa JollaSan Diego92093USA

Cancer immunotherapy has emerged as a promising strategy for the treatment of cancer,with the tumor microenvironment(TME)playing a pivotal role in modulating the immune ***47,a cell surface protein,has been identified as a crucial regulator of the TME and a potential therapeutic target for cancer ***,the precise functions and implications of CD47 in the TME during immunotherapy for cancer patients remain incompletely *** comprehensive review aims to provide an overview of CD47’s multifaced role in TME regulation and immune evasion,elucidating its impact on various types of immunotherapy outcomes,including checkpoint inhibitors and CAR T-cell ***,CD47-targeted therapies offer a promising avenue for improving cancer treatment outcomes,especially when combined with other immunotherapeutic *** review also discusses current and potential CD47-targeted therapies being explored for cancer treatment and delves into the associated challenges and opportunities inherent in targeting *** the demonstrated effectiveness of CD47-targeted therapies,there are potential problems,including unintended effects on healthy cells,hematological toxicities,and the development if ***,further research efforts are warranted to fully understand the underlying mechanisms of resistance and to optimize CD47-targeted therapies through innovative combination approaches,ultimately improving cancer treatment ***,this comprehensive review highlights the significance of CD47 as a promising target for cancer immunotherapy and provides valuable insight into the challenges and opportunities in developing effective CD47-targeted therapies for cancer treatment.

关键词： CD47 Cancer immunotherapy CD47-targeted therapies Tumor microenvironment macrophage Cancer cell Immune evasion Checkpoint inhibitors CAR T-cell therapy Cancer treatment outcomes

Game-changing insights on vertebral skeletal stem cells in bone metastasis and therapeutic horizons

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oncology Research 2024年第1期32卷 95-98页

作者： QIUQIANG CHEN XIAoLEI ZHAo WENXUE ma Key laboratory for Translational Medicine The First Affiliated HospitalHuzhou University School of MedicineHuzhou313000China Department of Urology Huaihe Hospital of Henan UniversityKaifeng475004China Department of Medicine Moores Cancer CenterSanford Stem Cell InstituteUniversity of California San DiegoLa Jolla92093USA

Greenblatt and his team have unveiled vertebral skeletal stem cells(vSSCs)as a critical player in the landscape of bone *** commentary delves into the transformative discoveries surrounding vSSCs,emphasizing their distinct role in bone metastasis compared to other stem cell *** illuminate the unique properties and functions of vSSCs,which may account for the elevated susceptibility of vertebral bones to metastatic ***,we explore the exciting therapeutic horizons opened by this newfound *** include potential interventions targeting vSSCs,modulation of associated signaling pathways,and broader implications for the treatment and management of bone *** shedding light on these game-changing insights,we hope to pave the way for novel strategies that could revolutionize the prognosis and treatment landscape for cancer patients with metastatic bone disease.

关键词： Vertebral skeletal stem cells(vSSCs) Stem cell research Metastasis Breast prostate and lung cancers Spinal metastasis matthew Greenblatt Genetic expressions

la-D-B1,a novel Abemaciclib derivative,exerts anti-breast cancer effects through CDK4/6

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BIoCELL 2024年第5期48卷 847-860页

作者： LING ma ZIRUI JIANG XIAo HoU YUTING XU ZIYUN CHEN SIYI ZHANG HANXUE LI SHAoJIE ma GENG ZHANG XIUJUN WANG JING JI Jiangsu Key laboratory of marine Pharmaceutical Compound Screening College of PharmacyJiangsu Ocean UniversityLianyungang222000China School of Medicine Xiamen UniversityXiamen361102China

Background:Regulatory proteins involved in human cellular division and proliferation,cyclin-dependent kinases 4 and 6(CDK4/6)are overexpressed in numerous cancers,including triple-negative breast cancer(TNBC).TNBC is a common pathological subtype of breast cancer that is prone to recurrence and metastasis,and has a single treatment *** one of the CDK4/6 inhibitors,abemaciclib can effectively inhibit the growth of breast *** this study,we synthesized la-D-B1,a derivative of Abemaciclib,and investigated its anti-tumor effects in breast ***:Cellular viability was assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)*** cloning and migration abilities were determined by colony formation assay and wound healing *** invasion abilities and adhesion were determined by cell invasion assay and cell adhesion *** impact of compound la-D-B1 on cell proliferation and the cell cycle was analyzed through Western blotting,which quantified the levels of proteins associated with the cyclin-dependent kinase(CDK)4/6-cyclin D-Rb-E2F *** in vivo anti-tumor activity of compound la-D-B1 was investigated using a chick chorioallantoic membrane(CAM)***:The study demonstrated that la-D-B1 effectively suppressed breast cancer cell proliferation,induced apoptosis,and caused cell cycle ***,la-D-B1 reduced the expression of key proteins in the CDK4/6-cyclin D-Rb-E2F pathway,including CDK4,CDK6 and *** results also indicated significant antitumor activity of la-D-B1 in a transplanted tumor ***:In this study,la-D-B1 demonstrated a potent anti-tumor effect by effectively suppressing cell proliferation and inhibiting cell cycle progression in breast *** findings highlight the potential of la-D-B1 as a valuable compound for enhancing therapeutic outcomes and controlling the progression of breast cancer.

关键词： CDK4/6 inhibitor Breast cancer Antitumor activity Cell cycle

Prevalence and Tasks Associated with Respiratory Symptoms among Waste Electrical and Electronic Equipment Handlers in ouagadougou, Burkina Faso in 2019

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occupational Diseases and Environmental Medicine 2024年第3期12卷 199-210页

作者： marthe Sandrine Sanon Lompo Sombenewindé Bienvenu Alexandre Nikiéma Issa Traoré marius Kédoté Jules owona manga Nicolas Méda Dpartement de Sant Publique Unit de Formation et de Recherche en Sciences de la Sant Universit Joseph Ki Zerbo Ouagadougou Burkina Faso Institut Suprieur en Sciences de la Sant Universit Nazi BONI Bobo Dioulasso Burkina Faso Centre Rgional de Formation en Sant Publique Ouidah Benin Facult des Sciences de la Sant Universit de Yaound Yaound Camroun

Introduction: The uncontrolled management of waste electrical and electronic equipment (W3E) causes respiratory problems in the handlers of this waste. The objective was to study the stains associated with respiratory symptoms in W3E handlers. Methods: The study was cross-sectional with an analytical focus on W3E handlers in the informal sector in ouagadougou. A peer-validated questionnaire collected data on a sample of 161 manipulators. Results: the most common W3E processing tasks were the purchase or sale of W3E (67.70%), its repair (39.75%) and its collection (31.06%). The prevalence of cough was 21.74%, that of wheezing 14.91%, phlegm 12.50% and dyspnea at rest 10.56%. In bivariate analysis, there were significant associations at the 5% level between W3E repair and phlegm (p-value = 0.044), between W3E burning and wheezing (p-value = 0.011) and between W3E and cough (p-value = 0.01). The final logistic regression models suggested that the burning of W3E and the melting of lead batteries represented risk factors for the occurrence of cough with respective prevalence ratios of 4.57 and 4.63. Conclusion: raising awareness on the wearing of personal protective equipment, in particular masks adapted by W3E handlers, favoring those who are dedicated to the burning of electronic waste and the melting of lead could make it possible to reduce the risk of occurrence of respiratory symptoms.

关键词： Respiratory Symptoms W3E Associated Tasks ouagadougou

Effect of cobalt substitution for nickel on microstructural evolution and hydrogen storage properties of la_(0.66)Mg_(0.34)Ni_(3.5-x)Co_(x) alloys

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Journal of Rare Earths 2024年第5期42卷 930-939,I0004页

作者： Xincong He Huazhou Hu Ruizhu Tang Wenhao Zhou Houqun Xiao Xiaoxuan Zhang Chuanming ma Qingjun Chen School of Rare Earths University Science&Technology of ChinaHefei230026China Key laboratory of Rare Earths Chinese Academy of SciencesJiangxi Institute of Rare EarthsGanjiang Innovation AcademyChinese Academy of SciencesGanzhou341000China

Superlattice hydrogen storage alloys offer a compelling advantage with rapid hydriding rate and high storage ***,its practical applications face challenges including complex structure,low dehydriding capacity,and cyclic *** this work,we successfully prepared la_(0.66)Mg_(0.34)Ni_(3.5-x)Co_(x) superlattice hydrogen storage alloys with enhanced dehydriding capacity and stability by partially substituting Co for Ni.X-ray diffraction(XRD)refinements analysis reveals the presence of(la,Mg)_(3)Ni_(9),(la,Mg)_5Ni_(19),and laNi_(5) phases within the *** Co substitution in the la_(0.06)Mg_(0.34)Ni_(3.4)Co_(0.1)alloy,there is a significant increase in content of the(la,Mg)_(3)Ni_(9) phase and a reduction in the hysteresis factor,resulting in an improved reversible hydrogen storage capacity from 1.45 wt%to 1.60 wt%.The dehydriding kinetics of the alloy is controlled by diffusion model with an activation energy of 8.40 kJ/***,the dehydriding enthalpy value of the Co-substituted alloy decreases from 30.84 to 29.85 kJ/***,the cycling performance of the alloy after Co substitution exhibits excellent stability,with a capacity retention rate of 92.3%after 100 *** findings provide valuable insights for the development of cost-effective hydrogen storage materials.

关键词： Superlattice hydrogen storage alloy Co substitution Microstructure Kinetics Thermodynamics Rare earths

Influence of lithospheric thickness distribution on oil and gas basins,China seas and adjacent areas

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Acta oceanologica Sinica 2024年第4期43卷 1-14页

作者： Jing ma Wanyin Wang Hermann Zeyen Yimi Zhang Zhongsheng Li Tao He Dingding Wang School of Geology Engineering and Geomatics Key Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of EducationChang’an UniversityXi’an 710054China UMR8148 GEoPS CNRS/UniversitéParis-SaclayDépartement des Sciences de la TerreBât.50491405France CNooC Research Institute Co. Ltd.Beijing 100027China Qingdao Institute of marine geology Qingdao 266071China Department of Earth Sciences Memorial University of NewfoundlandSt.John’sNewfoundland AlB3X5Canada University of Naples Federico Ⅱ Department of Earth SciencesNaples80138Italy

The distribution of oil and gas resources is intricately connected to the underlying structure of the ***,investigating the characteristics of lithospheric thickness and its correlation with oil and gas basins is highly *** research utilizes recently enhanced geological–geophysical data,including topographic,geoid,rock layer thickness,variable rock layer density,and interface depth *** the principles of lithospheric isostasy and heat conduction,we compute the laterally varying lithospheric thickness in the China seas and adjacent *** these results,two pivotal parameters for different types of oil and gas basins were statistically analyzed:the minimum lithospheric thickness and the relative fluctuation in lithospheric thickness.A semiquantitative analysis was used to explore the connection between these parameters and the hydrocarbon abundance within the oil and gas *** study unveils distinct variations in lithospheric thickness among basins,with oil and gas rich basins exhibiting a thicker lithosphere in the superimposed basins of central China and a thinner lithosphere in the rift basins of eastern ***,the relative fluctuations in lithospheric thickness in basins demonstrate significant disparities:basins rich in oil and gas often exhibit greater thickness ***,in the offshore basins of China,a conspicuous negative linear correlation is observed between the minimum lithospheric thickness and the relative fluctuation in lithospheric *** study posits that deep-seated thermal upwelling results in lithospheric undulations and extensional thinning in oil and gas ***,sustained deep-seated heat influences sedimentary materials in basins,creating favorable conditions for oil and gas *** insights derived from this study contribute to a quantitative understanding of the intricate relationships between deep lithospheric structures and oil and gas basins.

关键词： China seas and adjacent areas lithospheric thickness oil and gas basins

Geochronology and Petrogenesis of late Carboniferous to Early Permian Basalts in the Central Lhasa Subterrane, Southern Tibet: Implications for the Evolution of the Sumdo Paleo-Tethys ocean

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 955-968页

作者： ma Wang LIU Yingchao YANG Zhusen Jan-marten HUIZENGA LI Zhenqing YUE Longlong ZHAo Sibo School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Institute of Geology Sinoprobe LaboratoryChinese Academy of Geological SciencesBeijing 100037China MLR Key laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China Faculty of Environmental Sciences and Natural Resource management Norwegian University of Life SciencesNO-1432ÅsNorway Economic Geology Research Centre(EGRU) College of Science and EngineeringJames Cook UniversityTownsvilleQueensland 4811Australia Department of Geology University of JohannesburgAuckland Park 2006South Africa

Basalts from the late Carboniferous to Early Permian are extensively developed in the central Lhasa subterrane, southern Tibet. Studying the petrogenesis of these rocks may have implications for the late Paleozoic arc magmatism along the central Lhasa subterrane uncovering more of the evolution of the Sumdo Paleo-Tethys ocean and its dynamic mechanism. Basalt samples from the Luobadui Formation in the Leqingla area, NW of Linzhou City in the central Lhasa subterrane, southern Tibet exhibit arc-like geochemical signatures in a subduction-zone tectonic setting characterized by high Al_(2)o_(3) and low Tio_(2) contents, fractionated REE patterns with low Nb/la ratios and high LREE concentrations, and negative HFSE anomalies. Based on their higher Th/Ce, Nb/Zr, and lower Ba/Th, Pb/Nd ratios, slightly negative to positive ε_(Nd)(t) values, and the relatively high Sr-Pb isotopic compositions, these samples were probably derived from partial melting of a depleted mantle source of garnet + spinel lherzolite, metasomatized by subducted sediments around 297 ma. Modeling of the trace elements indicates that these basalts experienced fractional crystallization of olivine, clinopyroxene and minor plagioclase during magma ascent and eruption. It is proposed that these late Carboniferous–Early Permian basalts are associated with the northward subduction of the Sumdo Paleo-Tethys ocean seafloor along the southern margin of the central Lhasa subterrane.

关键词： geochemistry northward subduction Sumdo Paleo-Tethys ocean Lhasa terrane Tibet

Application of magnetotactic bacteria as engineering microrobots:Higher delivery efficiency of antitumor medicine

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Chinese Chemical Letters 2024年第10期35卷 139-146页

作者： Jing Zhang Charles Wang Yaoyao Zhang Haining Xia Yujuan Wang Kun ma junfeng Wang High magnetic Field laboratory CAS Key Laboratory of High Magnetic Field and lon Beam Physical BiologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China University of California San DiegoLa JollaCA 92093United States International magnetobiology Frontier Research Center Hefei 230031China

For a significant duration,enhancing the efficacy of cancer therapy has remained a critical *** bacteria(MTB),often likened to micro-robots,hold substantial promise as a drug delivery ***,classified as anaerobic,aquatic,and gram-negative microorganisms,exhibit remarkable motility and precise control over their internal biomineralization *** unique ability results in the formation of magnetic nanoparticles arranged along filamentous structures in a catenary fashion,enclosed within a *** bacteria possess distinctive biochemical properties that facilitate their precise positioning within complex *** harnessing these biochemical attributes,MTB could potentially offer substantial advantages in the realm of cancer *** article reviews the drug delivery capabilities of MTB in tumor treatment and explores various applications based on their inherent *** objective is to provide a comprehensive understanding of MTB-driven drug delivery and stimulate innovative insights in this field.

关键词： magnetotactic bacteria Engineering microrobot Tumor treatment Drug delivery Bioconjugation

Improvement of impact properties of Al-Si-Mg alloy via solution treatment and joint modification with Sr and la

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Rare Metals 2024年第7期43卷 3301-3313页

作者： Xiong-Ling Zheng Shao-Xiang Li Jia-Le ma Qing-Yan Xu Hai-Dong Zhao Zhi-Qiang Han Key laboratory for Advanced materials Processing Technology Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China National Engineering Research Center of Near-Net Shape Forming for Metallic materials South China University of TechnologyGuangzhou 510641China

An effort to obtain superior impact properties for Al-7Si-0.35 Mg alloy is presented,where modification with 0.02 wt% Sr and 0.1 wt% la as well as solution treatment was jointly *** samples were solution treated at 535℃ for 15 min to 12 *** microstructure,fracture mechanism,and their correlation with the impact properties of the alloy were studied in detail mainly through optical microscopy(oM),scanning electron microscopy(SEM) and oscillography impact *** results show that the addition of Sr and la refined the eutectic Si particles significantly from~ 2.05 μm(modified with Sr alone) to~ 0.75 μm in as-cast microstructure,leading to a very homogeneous distribution of spheroidized Si particles in the alloy solution treated at 535℃ for 8 *** alloy exhibits excellent impact toughness up to 75 J·cm^(-2),which is much higher than the maximum impact toughness of the alloys modified by Sr alone(~ 46 J·cm^(-2)).The major reason for this remarkable increase in the impact property is the dramatic increase in crack initiation *** dispersoid-free zones(DFZs)near the eutectic regions mainly consist of the ductile Al-matrix,which exhibits excellent *** ductile Al-matrix of the DFZs hinders the crack propagation,resulting in a significant increase in crack propagation energy.

关键词： Aluminum alloys Modification Solution treatment Microstructure Impact properties Fracture mechanism