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The protein-protein interaction landscape of transcription factors during gynoecium development in Arabidopsis

Molecular Plant 2023年第1期16卷 260-278页

作者： Humberto Herrera-Ubaldo Sergio E.Campos Pablo López-Gómez Valentín Luna-García Víctor M.Zúñiga-Mayo Gerardo E.Armas-Caballero Karla L.González-Aguilera Alexander deLuna Nayelli Marsch-Martínez Carlos Espinosa-Soto Stefan de Folter Unidad de Genómica Avanzada(UGA-LANGEBIO) Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional(CINVESTAV-IPN)IrapuatoGuanajuato 36824México departamento de Biotecnología y Bioquímica Unidad IrapuatoCINVESTAV-IPNIrapuatoGuanajuato 36824México instituto de Física Universidad de San Luis PotosíSan Luis PotosíSLP 78290México Present address:department of Plant Sciences University of CambridgeCambridgeUK Present address:department of Molecular and Cellular Biology University of California DavisDavisCAUSA Present address:CONACYT Instituto de FitosanidadColegio de PostgraduadosCampus MontecilloTexcocoMéxico

Flowers are composed of organs whose identity is defined by the combinatorial activity of transcription factors(TFs).The interactions between MADS-box TFs and protein complex formation have been schematized in the floral quartet model of flower *** gynoecium is the flower’s female reproductive part,crucial for fruit and seed production and,hence,for reproductive *** the establishment of carpel identity,many tissues arise to form a mature *** have been described as regulators of gynoecium development,and some interactions and complexes have been ***,broad knowledge about the interactions among these TFs and their participation during development remains *** this study,we used a systems biology approach to understand the formation of a complex reproductive unit—as the gynoecium—by mapping binary interactions between well-characterized *** analyzed almost 4500 combinations and detected more than 250 protein-protein interactions(PPIs),resulting in a process-specific interaction *** analyses suggest hidden functions and novel roles for many *** addition,we observed a close relationship between TFs involved in auxin and cytokinin-signaling pathways and other ***,we analyzed the network by combining PPI data,expression,and genetic data,which helped us to dissect it into several dynamic spatio-temporal subnetworks related to gynoecium development ***,we generated an extended PPI network that predicts new players in gynoecium *** together,all these results serve as a valuable resource for the plant community.

关键词： interactome networks transcription factors gynoecium development

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A compartmental model for antibiotic resistant,bacterial infections over networks

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International Journal of Biomathematics 2020年第1期13卷 39-54页

作者： Damian AKnopoff Facundo ATrucccd Centro de Investigation y estudios de Matematica CONICET FaMAF(UNC) CdrdobaArgentina Argentine RedCross CordobaAigentina

This paper presents a compartmental model for bacterial infections in a population distributed over a network of *** each node,individuals interact,bacteria can be transmitted and the disease may be spread;moreover,the acquisition of bacterial antibiotic resistance is *** addition,nodes are connected through weighted edges,and consequently individuals from different nodes may *** a result,the infection may be propagated over the *** perform an analysis on this propagation as well as numerical simulations in order to illustrate the validity of the model.

关键词： Epidemiology compartmental models antibiotic resistance SIR model.

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Landscape genetics reveals inbreeding and genetic bottlenecks in the extremely rare short-globose cacti Mammillaria pectinifera (Cactaceae) as a result of habitat fragmentation

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Plant Diversity 2017年第1期39卷 13-19页

作者： Reyna Maya-Garcia Santiago Arizaga Pablo Cuevas-Reyes Juan Manuel Penaloza-Ramirez Victor Rocha Ramirez Ken Oyama Facultad de Biologia Universidad Michoacana de San Nicolas de Hidalgo Mexico Escuela Nacional-de estudios Superiores Unidad Morelia UNAM Antigua Carretera a Pdtzcuaro 8701 Colonia Ex-Hacienda de SanJose de la Huerta58190 Morelia Michoacan Mexico

Mammillaria pectinifera is an endemic, short-globose cactus species, included in the IUCN list as a threatened species with only 18 remaining populations in the Tehuacfin-Cuicatlan Valley in central Mexico. We evaluated the population genetic diversity and structure, connectivity, recent bottlenecks and population size, using nuclear microsatellites. M. pectinifera showed high genetic diversity but some evidence of heterozygote deficiency （F15）, recent bottlenecks in some populations and reductions in population size. Also, we found low population genetic differentiation and high values of connectivity for M. pectinifera, as the result of historical events of gene flow through pollen and seed dispersal. M. pectinifera occurs in sites with some degree of disturbance leading to the isolation of its populations and decreasing the levels of gene flow among them. Excessive deforestation also changes the original vegetation damaging the natural habitats. This species will become extinct if it is not properly preserved. Furthermore, this species has some ecological features that make them more vulnerable to disturbance such as a very low growth rates and long life cycles. We suggest in situ conservation to prevent the decrease of population sizes and loss of genetic diversity in the natural protected areas such as the Tehuacan-Cuicatlan Biosphere Reserve. In addition, a long-term ex situ conservation program is need to construct seed banks, and optimize seed germination and plant establishment protocols that restore disturbed habitats. Furthermore, creating a supply of living plants for trade is critical to avoid further extraction of plants from nature.

关键词： MammiUaria pectiniferaNuclear SSRGenetic diversityRecent bottlenecksEffective population size

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天语计划——寻找第二个太阳系及探索动态宇宙

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天文学报 2024年第4期65卷 1-43页

作者：冯发波芮易成杜芝茂林清张聪聪周丹崔开明 OGIHARA Masahiro 杨明林杰蔡永志杨涛只庞晓莹简明杰李文雄郭恒潇史弦史建春李荐扬郭康柔姚嵩陈啊明贾鹏谭先瑜 JENKINS S.James 蒋宏轩张铭缘李可欣肖光耀郑书玥宣一帆郑捷何敏 JONES R.A.Hugh 宋翠英上海交通大学李政道研究所上海201210 上海交通大学物理与天文学院上海200240 上海天文馆(上海科技馆分馆) 上海200127 中国科学院上海天文台上海200030 同济大学测绘与地理信息学院上海200092 中国科学院星系宇宙学重点实验室(中国科学技术大学) 合肥230026 中国科学技术大学天文与空间科学学院合肥230026 中国科学院云南天文台昆明650216 中国科学院天体结构与演化重点实验室昆明650216 国际超新星中心-云南省国际超新星研究重点实验室昆明650216 西安交通大学物理学院西安710049 西交利物浦大学物理系苏州215123 上海师范大学上海市星系与宇宙学半解析研究重点实验室上海200234 department of Astronomy Stockholm University Stockholm11421 中国科学院国家天文台北京100101 中山大学大气科学学院珠海519082 太原理工大学电子信息与光学工程学院太原030024 instituto de estudios astrofısicos Facultad de Ingenierıa y CienciasUniversidad Diego Portales Santiago8170641 Centro de astrof´ısica y Tecnologıas Afines(CATA)Santiago 8480000 山东大学空间与物理学院山东省光学天文与日地空间环境重点实验室威海264209 中国科学院国家天文台中国科学院天文光学技术重点实验室北京100101 Centre for Astrophysics Research University of Hertfordshire HertfordshireAL109AB 清华大学天体物理研究中心北京100084

像木星和土星这样的冷巨行星对类地行星的形成和宜居性起到了关键作用,因此,对像太阳系这样具有多个冷巨行星的系统的搜寻具有重要意义.Kepler以及TESS (Transiting Exoplanet Survey Satellite)太空望远镜成功地通过凌星的方法发现了... 详细信息

像木星和土星这样的冷巨行星对类地行星的形成和宜居性起到了关键作用,因此,对像太阳系这样具有多个冷巨行星的系统的搜寻具有重要意义.Kepler以及TESS (Transiting Exoplanet Survey Satellite)太空望远镜成功地通过凌星的方法发现了大量短周期行星,然而这些巡天项目的观测基线不足以发现更长周期的行星.为此,天语计划将部署两台1m望远镜(天语一号和天语二号),用于结合天语和其他计划的数据通过凌星法来发现冷巨行星及其他行星,并最终发现类太阳系.天语一号具有约10平方度的视场以及高速CMOS (complementary metal-oxide-semiconductor)科学相机,将对超过1000万颗恒星每小时进行一次高精度测光采样,并通过天语二号的多波段测光、光谱仪以及高分辨率成像对天语一号发现的候选行星进行确认.天语望远镜将放置于海拔约4000m的中国青海冷湖,是目前中国境内最好观测台址之一.天语对亮于14等星的测光精度为0.1%,对亮于18等星的测光精度优于1%,天语预计在5yr内将在类太阳周期发现超过300颗凌星行星,其中包括约17颗冷巨行星.基于系统轨道共面以及孪生地球发生率为10%的假设,天语预计将发现1-2个类太阳系,并可被未来的地球2.0计划所证实.此外,天语还将通过多种巡天观测模式测量从亚秒到周时标的光变,探测不同时标的时域现象,包括超新星早期光变、稀有变星和双星、潮汐瓦解事件、Be星、彗星活动以及系外小行星等.这些发现不仅将深化我们对宇宙的理解,还将为公众科学和科普提供重要平台.

关键词：技术:测光行星与卫星:探测行星与卫星:形成恒星:超新星:普通恒星:变星:普通小行星:普通恒星:伽马射线暴:普通

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Role of platelets and breast cancer stem cells in metastasis

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World Journal of Stem Cells 2020年第11期12卷 1237-1254页

作者： Gretel Mendoza-Almanza Luis Burciaga-Hernandez Vilma Maldonado Jorge Melendez-Zajgla Jorge Olmos CONACYT Universidad Autónoma de Zacatecas.Zacatecas 98060Mexico Maestría en Ciencias Biomédicas Universidad Autónoma de ZacatecasZacatecas 98160Mexico Laboratorio de Epigenética Instituto Nacional de Medicina GenómicaCiudad de México 14610Mexico Génómica funcional del cáncer Instituto Nacional de Medicina GenómicaCiudad de México 14610Mexico Biotecnología Marina Centro de Investigación Científica y de Estudios Superiores de EnsenadaEnsenada 22860Mexico

The high mortality rate of breast cancer is mainly caused by the metastatic ability of cancer cells,resistance to chemotherapy and radiotherapy,and tumor regression *** recent years,it has been shown that the presence of breast cancer stem cells is closely associated with the migration and metastatic ability of cancer cells,as well as with their resistance to chemotherapy and *** tumor microenvironment is one of the main molecular factors involved in cancer and metastatic processes development,in this sense it is interesting to study the role of platelets,one of the main communicator cells in the human body which are activated by the signals they receive from the microenvironment and can generate more than one *** can ingest and release RNA,proteins,cytokines and growth *** the platelets interact with the tumor microenvironment,they are called"tumor-educated platelets."Tumor-educated platelets transport material from the tumor microenvironment to sites adjacent to the tumor,thus helping to create microenvironments conducive for the development of primary and metastatic *** has been observed that the clone capable of carrying out the metastatic process is a cancer cell with stem cell *** stem cells go through a series of processes,including epithelial-mesenchymal transition,intravasation into blood vessels,movement through blood vessels,extravasation at the site of the establishment of a metastatic focus,and site ***-educated platelets support all these processes.

关键词： Breast cancer stem cells Platelets Metastasis Tumor microenvironment Epithelial-mesenchymal transition

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S-adenosyl-methionine decreases ethanol-induced apoptosis in primary hepatocyte cultures by a c-Jun N-terminal kinase activity-independent mechanism

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World Journal of Gastroenterology 2006年第12期12卷 1895-1904页

作者： Maria del Pilar Cabrales-Romero Lucrecia Márquez-Rosado Samia FatteI-Fazenda Cristina Trejo-Solis Evelia Arce-Popoca Leticia Alemán-Lazarini Saúl Villa-Trevineo department of Cell Biology Centro de Investigacién y Estudios Avanzados IPN Av. IPN No. 2508 México DF México department of Neuroimmunology Instituto National de Neurologia y Neurocirugia MVS Insurgentes Sur 3877 Col La Fama DF México

AIM： To determine the role of c-Jun N-terminal kinase （JNK） activity in ethanol-induced apoptosis and the modulation of this signaling cascade by S-Adenosylmethionine （AdoMet）. METHODS： Primary hepatocyte cultures were pretreated with 100 IJmol/L SP600125, a selective JNK inhibitor, 1 mL/L DMSO or 4 mmol/L AdoMet and then exposed to 100 mmo/L ethanol. Hepatocyte apoptosis was determined by the TUNEL and DNA ladder assays. JNK activity and its inhibition by SP600125 and AdoMet were determined by Western blot analysis of c-jun phosphorylation and Bid fragmentation. SP600125 and AdoMet effects on the apoptotic signaling pathway were determined by Western blot analysis of cytochrome c release and pro-caspase 3 fragmentation. The AdoMet effect on glutathione levels was measured by EIIman＇s method and reactive oxygen species （ROS） generation by cell cytometry. RESULTS： The exposure of hepatocytes to ethanol induced JNK activation, c-jun phosphorylation, Bid fragmentation, cytochrome c release and pro-caspase 3 cleavage; these effects were diminished by SP600125, and caused a significant decrease in ethanol-induced apoptosis （P〈 0.05）. AdoMet exerted an antioxidant effect maintaining glutathione levels and decreasing ROS generation, without a significant effect on JNK activity, and prevented cytochrome c release and pro-caspase 3 cleavage.CONCLUSION： The JNK signaling cascade is a key component of the proapoptotic signaling pathway induced by ethanol. JNK activation may be independent from ROS generation, since AdoMet which exerted antioxidant properties did not have a significant effect on JNK activity. JNK pathway modulator agents and AdoMet may be components of promising therapies for alcoholic liver disease （ALD） treatment.

关键词： Alcoholic liver disease c-Jun N-terminal kinase Apoptosis SP600125 S-Adenosyl methionine Bid Reactive oxygen species

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Biocompatibility and electrochemical evaluation of ZrO_(2) thin films deposited by reactive magnetron sputtering on MgZnCa alloy

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Journal of Magnesium and Alloys 2021年第6期9卷 2019-2038页

作者： Benjamín Millán-Ramos Daniela Morquecho-Marín Phaedra Silva-Bermudez David Ramírez-Ortega Osmary depablos-Rivera Julieta García-López Mariana Fernández-Lizárraga JoséVictoria-Hernández Dietmar Letzig Argelia Almaguer-Flores Sandra E.Rodil instituto de Investigaciones en Materiales Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico Posgrado en Ciencia e Ingeniería de Materiales Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico Unidad de Ingeniería de Tejidos Terapia Celular y Medicina RegenerativaInstituto Nacional de Rehabilitación Luis Guillermo IbarraCDMX 14389Mexico Posgrado en Ciencias Médicas Odontológicas y de la SaludUniversidad Nacional Autónoma de MéxicoCDMX 04510Mexico instituto de Ciencias Aplicadas y Tecnologia Universidad Nacional Autónoma de MéxicoCDMX 04510Mexico Posgrado de Doctorado en Ciencias en Biomedicina y Biotecnología Molecular Escuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCDMX 11340Mexico Institute of Material and Process design Helmholtz-Zentrum GeesthachtMax-Planck-Strasse 1Geesthacht 21502Germany Magnesium Innovation Centre MagIC Helmholtz-Zentrum GeesthachtMax-Planck-Strasse 1Geesthacht 21502Germany Laboratorio de Biointerfases Facultad de OdontologíaDivisión de Estudios de Posgrado e InvestigaciónUniversidad Nacional Autónoma de MéxicoCDMX 04510Mexico

Biodegradable magnesium alloys are promising candidates for temporary fracture fixation devices in orthopedics;nevertheless,its fast degradation rate at the initial stage after implantation remains as one of the main challenges to be ***_(2)-based coatings to reduce the degradation rate of the Mg-implants are an attractive solution since they show high biocompatibility and *** this work,the degradation,cytotoxicity,and antibacterial performance of ZrO_(2)thin films deposited by magnetron sputtering on a Mg-Zn-Ca alloy was ***-term degradation of ZrO_(2)-coated and uncoated samples was assessed considering electrochemical techniques and H_(2)evolution(gas chromatography).Additionally,long term degradation was assessed by mass-loss *** results showed that a 380 nm ZrO_(2)coating reduces the degradation rate and H_(2)evolution of the alloy during the initial 3 days after immersion but allows the degradation of the bare alloy for the *** ZrO_(2)coating does not compromise the biocompatibility of the alloy and permits better cell adhesion and proliferation of mesenchymal stem cells directly on its surface,in comparison to the bare ***,the ZrO_(2)coating prevents the adhesion and biofilm formation of ***.

关键词： Zirconium dioxide Magnetron sputtering Short-term degradation H_(2)evolution

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Current advances in using tolerogenic dendritic cells as a therapeutic alternative in the treatment of type 1 diabetes

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World Journal of Diabetes 2021年第5期12卷 603-615页

作者： William de Jesús Ríos-Ríos Sorely Adelina Sosa-Luis Honorio Torres-Aguilar department of Biochemical Sciences Faculty Universidad Autónoma“Benito Juárez”de OaxacaOaxaca 68120Mexico department of Molecular Biomedicine Centro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMexico City 07360Mexico

Type 1 diabetes(T1D)is an autoimmune disease characterized by the destruction of insulin-producingβ-cells of the pancreatic islets by autoreactive T cells,leading to high blood glucose levels and severe long-term *** typical treatment indicated in T1D is exogenous insulin administration,which controls glucose levels;however,it does not stop the autoimmune *** strategies have been implemented aimed at stoppingβ-cell destruction,such as cellular *** cells(DCs)as an alternative in cellular therapy have gained great interest for autoimmune disease therapy due to their plasticity to acquire immunoregulatory properties both in vivo and in vitro,performing functions such as anti-inflammatory cytokine secretion and suppression of autoreactive lymphocytes,which are dependent of their tolerogenic phenotype,displayed by features such as semimature phenotype,low surface expression of stimulatory molecules to prime T cells,as well as the elevated expression of inhibitory *** may be obtained and propagated easily in optimal amounts from peripheral blood or bone marrow precursors,such as monocytes or hematopoietic stem cells,respectively;therefore,various protocols have been established for tolerogenic(tol)DCs manufacturing for therapeutic research in the treatment of *** this review,we address the current advances in the use of tolDCs for T1D therapy,encompassing protocols for their manufacturing,the data obtained from preclinical studies carried out,and the status of clinical research evaluating the safety,feasibility,and effectiveness of tolDCs.

关键词： Type 1 diabetes dendritic cells Autoimmunity Immune tolerance Cell therapy Immunotherapy.

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Mercury levels in human population from a mining district in Western Colombia

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Journal of Environmental Sciences 2018年第6期30卷 83-90页

作者： Harry Gutiérrez-Mosquera S.B.Sujitha M.P.Jonathan S.K.Sarkar Fairy Medina-Mosquera Helcias Ayala-Mosquera Gladis Morales-Mira Laura Arreola-Mendoza Facultad de Ingenieria Universidad Tecnologica del Choco Carrera 22 No.18B-10 Quibdo Colombia Centro Interdisciplinario de Investigaciones y estudios sobre Medio Ambiente y desarrollo (CIIEMAD) Instituto Politecnico Nacional (IPN) Calle 30 de junio de 1520 Barrio la Laguna Ticomdn Del. Gustavo A. Madero C.P.07340 Ciudad de Mexico Mexico department of Marine Science University of Calcutta 35 Ballygunge Circular Road Calcutta 700 019 India instituto de Investigaciones Ambientales del Pacifico (IIAP) Carrera 6 No. 37-39 quibdo Colombia Facultad de Ingenieria Uniuersidad de Medellin Carrera 87 No. 30-65 Medellin Colombia

A biomonitoring study was carried out to examine the adverse impacts of total mercury in the blood（HgB）, urine（Hg U） and human scalp hair（HgH） on the residents of a mining district in Colombia. Representative biological samples（scalp hair, urine and blood） were collected from volunteered participants（n = 63） to estimate the exposure levels of THg using a Direct mercury analyzer. The geometric mean of THg concentrations in the hair,urine and blood of males were 15.98 μg/g, 23.89 μg/L and 11.29 μg/L respectively, whereas the females presented values of 8.55 μg/g, 5.37 μg/L and 8.80 μg/L. Chronic urinary Hg（HgU）levels observed in male workers（32.53 μg/L） are attributed to their long termed exposures to inorganic and metallic mercury from gold panning activities. On an average, the levels of THg are increasing from blood（10.05 μg/L） to hair（12.27 μg/g） to urine（14.63 μg/L）.Significant positive correlation was found between hair and blood urinary levels in both male and female individuals. Thus the present biomonitoring investigation to evaluate the Hg levels and associated health issues would positively form a framework for further developmental plans and policies in building an ecofriendly ecosystem.

关键词： Humans Mercury Gold panning Biomarkers Toxicity Colombia

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Distributed Monitoring of Power System Oscillations Using Multiblock Principal Component Analysis and Higher-order Singular Value decomposition

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Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 818-828页

作者： Arturo Román-Messina Alejandro Castillo-Tapia David A.Román-García Marcos A.Hernández-Ortega Carlos A.Morales-Rergis Claudia M.Castro-Arvizu Center for Research and Advanced Studies(CINVESTAV)of the National Polytechnic Institute of Mexico GuadalajaraJal.45017Mexico instituto Tecnológico y de estudios Superiores de Monterrey GuadalajaraJal.45070Mexico Autonomous University of Guadalajara GuadalajaraJal.45129Mexico Centro de Enseñanza Técnica Industrial and he is also with UAGGuadalajaraJal.44638Mexico

The primary goal in the analysis of hierarchical distributed monitoring and control architectures is to study the spatiotemporal patterns of the interactions between areas or *** this paper,a novel conceptual framework for distributed monitoring of power system oscillations using multiblock principal component analysis(MB-PCA)and higher-order singular value decomposition(HOSVD)is proposed to understand,characterize,and visualize the global behavior of the power *** proposed framework can be used to evaluate the influence of a given area or utility on the oscillatory behavior,uncover low-dimensional structures from high-dimensional data,and analyze the effects of heterogeneous data on the modal characteristics and interpretation of power *** metrics are then investigated to examine the relationships between the dynamic patterns and participation of individual data blocks in the global behavior of the *** application of these techniques is demonstrated by case studies of two systems:a 14-machine test system and a 5449-bus 635-generator equivalent model of a large power system.

关键词： Distributed monitoring multiblock principal component analysis(MB-PCA) higher-order singular value decomposition(HOSVD) Tucker decomposition

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