检索结果-南通市图书馆

Integrated Single-cell Multiomic Analysis of HIV Latency Reversal Reveals Novel Regulators of Viral Reactivation

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2024年第1期22卷 67-88页

作者： Manickam Ashokkumar Wenwen Mei jackson j.Peterson Yuriko Harigaya David M.Murdoch David M.Margolis caleb Kornfein Alex Oesterling Zhicheng Guo Cynthia D.Rudin Yuchao jiang Edward P.Browne Department of Medicine University of North Carolina at Chapel HillChapel HillNC 27599USA HIV Cure Center University of North Carolina at Chapel HillChapel HillNC 27599USA Department of Biostatistics University of North Carolina at Chapel HillChapel HillNC 27599USA Department of Microbiology and Immunology University of North Carolina at Chapel HillChapel HillNC 27599USA Department of Genetics University of North Carolina at Chapel HillChapel HillNC 27599USA Department of Medicine Duke UniversityDurhamNC 27708USA Department of Computer Science Duke UniversityDurhamNC 27708USA Department of Statistics Texas A&M UniversityCollege StationTX 77843USA Department of Biology Texas A&M UniversityCollege StationTX 77843USA Department of Biomedical Engineering Texas A&M UniversityCollege StationTX 77843USA

Despite the success of antiretroviral therapy,human immunodeficiency virus(HIV)cannot be cured because of a reservoir of latently infected cells that evades *** understand the mechanisms of HIV latency,we employed an integrated single-cell RNA sequencing(scRNA-seq)and single-cell assay for transposase-accessible chromatin with sequencing(scATAC-seq)approach to simultaneously profile the transcriptomic and epigenomic characteristics of~125,000 latently infected primary CD4^(+)T cells after reactivation using three different latency reversing *** expressed genes and differentially accessible motifs were used to examine transcriptional pathways and transcription factor(TF)activities across the cell *** identified cellular transcripts and TFs whose expression/activity was correlated with viral reactivation and demonstrated that a machine learning model trained on these data was 75%-79%accurate at predicting viral ***,we validated the role of two candidate HIV-regulating factors,FOXP1 and GATA3,in viral *** data demonstrate the power of integrated multimodal single-cell analysis to uncover novel relationships between host cell factors and HIV latency.

关键词： HIV latency reversal Primary CD4þT cell Single-cell multiomics HIV-regulating factor Machine learning

Control of Cell Wall Extensibility during Pollen Tube Growth

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2013年第4期6卷 998-1017页

作者： Peter K. Hepler caleb M. Rounds Lawrence j. Winship Biology Department University of Massachusetts Amherst MA 01003 USA School of Natural Science Hampshire College Amherst MA 01002 USA

In this review, we address the question of how the tip-growing pollen tube achieves its rapid rate of elongation while maintaining an intact cell wall. Although turgor is essential for growth to occur, the local expansion rate is controlled by local changes in the viscosity of the apical wall. We focus on several different structures and underly- ing processes that are thought to be major participants including exocytosis, the organization and activity of the actin cytoskeleton, calcium and proton physiology, and cellular energetics. We think that the actin cytoskeleton, in particular the apical cortical actin fringe, directs the flow of vesicles to the apical domain, where they fuse with the plasma mem- brane and contribute their contents to the expanding cell wall. While pH gradients, as generated by a proton-ATPase located on the plasma membrane along the side of the clear zone, may regulate rapid actin turnover and new polymeri- zation in the fringe, the tip-focused calcium gradient biases secretion towards the polar axis. The recent data showing that exocytosis of new wall material precedes and predicts the process of cell elongation provide support for the idea that the intussusception of newly secreted pectin contributes to decreases in apical wall viscosity and to cell expansion. Other prime factors will be the localization and activity of the enzyme pectin methyl-esterase, and the chelation of calcium by pectic acids. Finally, we acknowledge a role for reactive oxygen species in the control of wall viscosity.

关键词： cell expansion cell walls cytoskeleton dynamics polarity pollen development.

Biobehavioral assessment of the anxiety disorders:Current progress and future directions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World journal of Psychiatry 2017年第3期7卷 133-147页

作者： Deah Abbott Yasmin Shirali j Kyle Haws caleb W Lack Department of Psychology University of Central Oklahoma

It is difficult to accurately assess and differentially diagnose the anxiety *** current system of assessment relies heavily on the subjective measures of client self-report,clinical observation,and clinical ***,recent technological advances may enable practitioners to utilize objective,biobehavioral measures of assessment in a clinical *** current body of literature on two of these biobehavioral tools(eyetracking and electrocardiogram devices) is promising,but more validation and standardization research is needed to maximize the utility of these ***-tracking devices are uniquely capable of providing data that can be used to differentially diagnose anxiety disorders from both other commonly comorbid and misdiagnosed *** eye-tracking and electrocardiogram devices are able to provide change-sensitive assessment *** objective,real-time feedback can assist clinicians and researchers in assessing treatment efficacy and symptom *** developed wearable and highly portable electrocardiogram devices,like the wearable fitness and behavior tracking devices used by many consumers,may be particularly suited for providing this feedback to *** these biobehavioral devices would supply an objective,dimensional component to the current categorical diagnostic assessment *** posit that if adequate funding and attention are directed at this area of research,it could revolutionize diagnostic and on-going assessment practices and,in doing so,bring the field of diagnosis out of the 20 th century.

关键词： Biobehavioral Assessment Diagnosis Anxiety Electrocardiogram Electrocardiogram Eyetracker

Genome and clonal hematopoiesis stability contrasts with immune,cfDNA,mitochondrial,and telomere length changes during short duration spaceflight

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Precision Clinical Medicine 2024年第1期7卷 1-13页

作者： j.Sebastian Garcia-Medina Karolina Sienkiewicz S.Anand Narayanan Eliah G.Overbey Kirill Grigorev Krista A.Ryon Marissa Burke jacqueline Proszynski Braden Tierney caleb M.Schmidt Nuria Mencia-Trinchant Remi Klotz Veronica Ortiz jonathan Foox Christopher Chin Deena Najjar Irina Matei Irenaeus Chan Carlos Cruchaga Ashley Kleinman jangKeun Kim Alexander Lucaci Conor Loy Omary Mzava Iwijn De Vlaminck Anvita Singaraju Lynn E.Taylor julian C.Schmidt Michael A.Schmidt Kelly Blease juan Moreno Andrew Boddicker junhua Zhao Bryan Lajoie Andrew Altomare Semyon Kruglyak Shawn Levy Min Yu Duane C.Hassane Susan M.Bailey Kelly Bolton jaime Mateus Christopher E.Mason Department of Physiology and Biophysics Weill Cornell MedicineCornell UniversityNew YorkNY 10021USA The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine Weill Cornell MedicineNew YorkNY 10021USA Department of Immunology Weill Cornell MedicineCornell UniversityNew YorkNY 10021USA Department of Stem Cell Biology and Regenerative Medicine Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCA 90033USA Space Exploration Technologies Corporation HawthomeCA 90250USA Sovaris Aerospace BoulderCO 80302USA Advanced Pattern Analysis&Human Performance Group BoulderCO 80302USA Children's Cancer and Blood Foundation Laboratories Departments of Pediatrics and Cell and Developmental BiologyDrukier Institute for Children's HealthMeyer Cancer CenterWeill Cornell MedicineNew YorkNY 10021USA Meyer Cancer Center Weill Cornell MedicineNew YorkNY 10065USA Department of Nutrition and Integrative Physiology Florida State UniversityTallahasseeFL 32306USA Department of Systems Engineering Colorado State UniversityFort CollinsCO 80523USA Element Biosciences San DiegoCA 10055USA Department of Environmental and Radiological Health Sciences Colorado State UniversityFort CollinsCO 80523USA Cell and Molecular Biology Program Colorado State UniversityFort CollinsCO 80523USA BioAstra Inc New YorkNYUSA Washington University St Louis Oncology Division St.LouisMO 63100USA Meinig School of Biomedical Engineering Cornell UniversityIthacaNY 14853USA The Feil Family Brain and Mind Research Institute Weill Cornell MedicineNY 10021USA WorldQuant Initiative for Quantitative Prediction Weill Cornell MedicineNew YorkNY 10021USA

Background The Inspiration4(I4)mission,the first all-civilian orbital flight mission,investigated the physiological effects of short-duration spaceflight through a multi-omic *** advances,there remains much to learn about human adaptation to spaceflight's unique challenges,including microgravity,immune system perturbations,and radiation *** To provide a detailed genetics analysis of the mission,we collected dried blood spots pre-,during,and post-flight for DNA *** length was measured by quantitative PCR,while whole genome and cfDNA sequencing provided insight into genomic stability and immune adaptations.A robust bioinformatic pipeline was used for data analysis,including variant calling to assess mutational *** Telomere elongation occurred during spaceflight and shortened after return to ***-free DNA analysis revealed increased immune cell signatures *** significant clonal hematopoiesis of indeterminate potential(CHIP)or whole-genome instability was *** long-term gene expression changes across immune cells suggested cellular adaptations to the space environment persisting months *** Our findings provide valuable insights into the physiological consequences of short-duration spaceflight,with telomere dynamics and immune cell gene expression adapting to spaceflight and persisting after return to *** sequencing data will serve as a reference point for studying the early development of CHIP in astronauts,an understudied phenomenon as previous studies have focused on career *** study will serve as a reference point for future commercial and non-commercial spaceflight,low Earth orbit(LEO)missions,and deep-space exploration.

关键词： genomes clonal hematopoiesis stability immune mitochondria ribosomes spaceflight

Efficient VLSI Implementation of the C-MANTEC Conn Algorithm by Using PID Controllers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Circuits and Systems 2017年第11期8卷 253-260页

作者： j. jeya caleb M. Kannan Department of ECE Saveetha Engineering College Chennai India Department of ECE MIT Campus Anna University Chennai India

Through the research on the existing C-MANTEC neural network and PID control technology, this paper presents an improved C-MANTEC algorithm based on PID control system. The combining of the artificial neural networks with conventional PID control helps in exploring their respective advantages to forming the intelligent PID control. From UCI Repository cancer dataset, the developed system is tested. The results show that the scheme can not only improve the speed of the algorithm in the training process but also improve the generalization capability of the network, which further enhances the performance of PID controllers. The overall power consumed is also reduced to a greater extent.

关键词： C-MANTEC PID Generalization Capability Cancer Intelligent Control

Current Status and Future Challenges of Weather Radar Polarimetry: Bridging the Gap between Radar Meteorology/Hydrology/Engineering and Numerical Weather Prediction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2019年第6期36卷 571-588页

作者： Guifu ZHANG Vivek N.MAHALE Bryan j.PUTNAM Youcun QI Qing CAO ANDrew D.BYRD Petar BUKOVCIC Dusan S.ZRNIC jidong GAO Ming XUE Youngsun jUNG Heather D.REEVES Pamela L.HEINSELMAN AlexANDer RYZHKOV Robert D.PALMER Pengfei ZHANG Mark WEBER Greg M.MCFARQUHAR Berrien MOORE III Yan ZHANG jian ZHANG j.VIVEKANANDAN Yasser AL-RASHID Richard L.ICE Daniel S.BERKOWITZ Chong-chi TONG caleb FULTON Richard j.DOVIAK University of Oklahoma NOAA/National Weather Service Enterprise Electronics Corporation NOAA/National Severe Storms Laboratory National Center for Atmospheric Research Raytheon Company Radar Operations Center

After decades of research and development, the WSR-88 D(NEXRAD) network in the United States was upgraded with dual-polarization capability, providing polarimetric radar data(PRD) that have the potential to improve weather observations,quantification, forecasting, and warnings. The weather radar networks in China and other countries are also being upgraded with dual-polarization capability. Now, with radar polarimetry technology having matured, and PRD available both nationally and globally, it is important to understand the current status and future challenges and opportunities. The potential impact of PRD has been limited by their oftentimes subjective and empirical use. More importantly, the community has not begun to regularly derive from PRD the state parameters, such as water mixing ratios and number concentrations, used in numerical weather prediction(NWP) *** this review, we summarize the current status of weather radar polarimetry, discuss the issues and limitations of PRD usage, and explore potential approaches to more efficiently use PRD for quantitative precipitation estimation and forecasting based on statistical retrieval with physical constraints where prior information is used and observation error is included. This approach aligns the observation-based retrievals favored by the radar meteorology community with the model-based analysis of the NWP community. We also examine the challenges and opportunities of polarimetric phased array radar research and development for future weather observation.

关键词： weather radar polarimetry radar meteorology numerical weather prediction data assimilation microphysics parameterization forward operator

Regulation of Mucin-type O-Glycan Biosynthesis Through the Cosmc and T-synthase—Implications in Human Diseases

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Regulation of Mucin-type O-Glycan Biosynthesis Through the C...

Minocycline fails to improve neurologic and histologic outcome after ventricular fibrillation cardiac arrest in rats

21st IUBMB and 12th FAOBMB International Congress of Biochemistry and Molecular Biology

作者： Tongzhong ju Yingchun Wang Xiaokun Ding Rajindra P.Aryal Wenyl Wang caleb j.Stowell Richard D.Cummings Department of Biochemistry Emory University School of MedicineAtlantaGA 30322USA

＜正＞The T-synthase（core 1 3-galactosyltransferase） is a glycosyl transferase responsible for converting GalNAcl-Ser/Thr（Tn antigen） to ***1- Ser/Thr（core 1 structure,T antigen）,which is a precursor for many mucin type O-glycans on animal *** of T-synthase in mice results in embryonic lethality due to impaired ***,

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

World journal of Critical Care Medicine 2019年第7期8卷 106-119页

作者： Andreas janata Ingrid AM Magnet Kristin L Schreiber caleb D Wilson jason P Stezoski Keri janesko-Feldman Patrick M Kochanek Tomas Drabek Safar Center for Resuscitation Research University of Pittsburgh School of MedicinePittsburghPA 15224United States Department of Critical Care Medicine University of Pittsburgh School of MedicinePittsburghPA 15213United States Emergency Department KA RudolfstiftungVienna 1030Austria Department of Emergency Medicine Vienna General HospitalMedical University of ViennaVienna 1090Austria Department of Anesthesiology and Perioperative Medicine University of Pittsburgh School of MedicinePittsburghPA 15213United States Department of Anesthesiology Perioperative and Pain MedicineBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115United States Wyoming Otolaryngology Wyoming Medical CenterCasperWY 82604United States

BACKGROUND Prolonged cardiac arrest(CA)produces extensive neuronal death and microglial proliferation and activation resulting in neuro-cognitive *** other potential mechanisms,microglia have been implicated as triggers of neuronal death after hypoxic-ischemic *** is neuroprotective in some brain ischemia models,either by blunting the microglial response or by a direct effect on *** To improve survival,attenuate neurologic deficits,neuroinflammation,and histological damage after ventricular fibrillation(VF)CA in *** Adult male isoflurane-anesthetized rats were subjected to 6 min VF CA followed by 2 min resuscitation including chest compression,epinephrine,bicarbonate,and *** return of spontaneous circulation(ROSC),rats were randomized to two groups:(1)Minocycline 90 mg/kg intraperitoneally(i.p.)at 15 min ROSC,followed by 22.5 mg/kg *** 12 h for 72 h;and(2)Controls,receiving the same volume of vehicle(phosphate-buffered saline).The rats were kept normothermic during the postoperative *** injury was assessed daily using Overall Performance Category(OPC;1=normal,5=dead)and Neurologic Deficit Score(NDS;0%=normal,100%=dead).Rats were sacrificed at 72 *** degeneration(Fluoro-jade C staining)and microglia proliferation(anti-Iba-1 staining)were quantified in four selectively vulnerable brain regions(hippocampus,striatum,cerebellum,cortex)by three independent reviewers masked to the group *** In the minocycline group,8 out of 14 rats survived to 72 h compared to 8 out of 19 rats in the control group(P=0.46).The degree of neurologic deficit at 72 h[median,(interquartile range)]was not different between survivors in minocycline vs controls:OPC 1.5(1-2.75)vs 2(1.25-3),P=0.442;NDS 12(2-20)vs 17(7-51),P=0.328)or between all studied *** number of degenerating neurons(minocycline vs controls,mean±SEM:Hippocampus 58±8 vs 76±8;striatum 121±43 vs 153±32;cerebellum 20±7 vs 22

关键词： Heart arrest/pathology Cardiopulmonary resuscitation Survival rate Neurons/drug effects Microglia/drug effects Minocycline/pharmacology

Histone deacetylase enzymes and selective histone deacetylase inhibitors for antitumor effects and enhancement of antitumor immunity in glioblastoma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neuroimmunology and Neuroinflammation 2018年第11期5卷 1-18页

作者： caleb j.Yelton Swapan K.Ray Department of Pathology Microbiologyand ImmunologyUniversity of South Carolina School of MedicineColumbiaSC 29209USA

Glioblastoma multiforme (GBM), which is the most common primary central nervous system malignancy in adults, has long presented a formidable challenge to researchers and clinicians alike. Dismal 5-year survival rates of the patients with these tumors and the ability of the recurrent tumors to evade primary treatment strategies have prompted a need for alternative therapies in the treatment of GBM. Histone deacetylase (HDAC) inhibitors are currently a potential epigenetic therapy modality under investigation for use in GBM with mixed results. While these agents show promise through a variety of proposed mechanisms in the pre-clinical realm, only several of these agents have shown this same promise when translated into the clinical arena, either as monotherapy or for use in combination regimens. This review will examine the current state of use of HDAC inhibitors in GBM, the mechanistic rationale for use of HDAC inhibitors in GBM, and then examine an exciting new mechanistic revelation of certain HDAC inhibitors that promote antitumor immunity in GBM. The details of this antitumor immunity will be discussed with an emphasis on application of this antitumor immunity towards developing alternative therapies for treatment of GBM. The final section of this article will provide an overview of the current state of immunotherapy targeted specifically to GBM.

关键词： Glioblastoma histone deacetylase inhibitors antitumor effects antitumor immunity