10 results on '"Tina Lai"'
Search Results
2. Resident memory CD4
- Author
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Carla, Cendón, Weijie, Du, Pawel, Durek, Yuk-Chien, Liu, Tobias, Alexander, Lindsay, Serene, Xinyi, Yang, Gilles, Gasparoni, Abdulrahman, Salhab, Karl, Nordström, Tina, Lai, Axel R, Schulz, Anna, Rao, Gitta A, Heinz, Ana L, Stefanski, Anne, Claußnitzer, Katherina, Siewert, Thomas, Dörner, Hyun-Dong, Chang, Hans-Dieter, Volk, Chiara, Romagnani, Zhihai, Qin, Sebastian, Hardt, Carsten, Perka, Simon, Reinke, Jörn, Walter, Mir-Farzin, Mashreghi, Kevin, Thurley, Andreas, Radbruch, and Jun, Dong
- Subjects
CD4-Positive T-Lymphocytes ,Vaccines ,Bone Marrow ,Humans ,CD8-Positive T-Lymphocytes ,Immunologic Memory - Abstract
Resident memory T lymphocytes (T
- Published
- 2022
3. CO2 supplementation eliminates sugar-rich media requirement for plant propagation using a simple inexpensive temporary immersion photobioreactor
- Author
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Leena Tripathi, Krishnan Sreenivas, Tina Lai, Aaron J. Ogden, April Hile, Marena Tauger, Eva Mei Shouse, Jishnu J. Bhatt, Ramya Mohandass, and Wayne R. Curtis
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Materials science ,Plant propagation ,business.industry ,Simple (abstract algebra) ,Immersion (virtual reality) ,Photobioreactor ,Horticulture ,Sugar ,Process engineering ,business - Abstract
In-vitro plant propagation systems such as Temporary Immersion Bioreactors (TIBs) are valuable tools that enable production of disease-free plants with improved traits. However, TIB systems can be expensive, difficult to implement, and prone to contamination due to sugar rich propagation media. Using rapidly growing chicory root cultures to expedite design-build-test cycles, we report here an improved, low-cost version of a previously reported Hydrostatically-driven TIB (Hy-TIB) that facilitates economical use of gas mixtures. Bioreactor improvements include decreased material costs, expanded modes of operation, and a horizontal orientation of a plastic film plant growth chambers that increase propagule light exposure. To take advantage of these improvements, we describe here experiments that evaluate the impacts of elevated CO2 on propagation of cacao (Theobroma cacao) secondary embryos and nodal cultures of yam (Dioscorea spp.) during both phototrophic and photomixotrophic growth. Our experiments show that elevated CO2 during plant propagation significantly improved both cacao and yam propagule development and eliminated the need for supplemental sugars in tissue culture growth media. Thus, our improved Hy-TIB shows potential as a simple, low-cost, and scalable propagation platform with cost-effective gas composition control and reduced risk of contamination overgrowth. We provide detailed instructions for assembly of this Hy-TIB design and discuss the implications of its adoption in food-insecure regions of the world.
- Published
- 2021
4. Mobilization of tissue-resident memory CD4+ T lymphocytes and their contribution to a systemic secondary immune reaction
- Author
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Anna Rao, Anne Bruns, Jun Dong, Pawel Durek, Mir-Farzin Mashreghi, Thomas Dörner, Weijie Du, Hyun-Dong Chang, Katherina Siewert, Kevin Thurley, Axel Schulz, Ana-Luisa Stefanski, Chiara Romagnani, Gitta-Anne Heinz, Carla Cendón, Tobias Alexander, Andreas Radbruch, Lindsay Serene, Tina Lai, and Hans-Dieter Volk
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T cell ,Biology ,medicine.disease_cause ,Measles ,Rubella ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,Antigen ,0502 economics and business ,medicine ,050207 economics ,Receptor ,Pathogen ,030304 developmental biology ,0303 health sciences ,050208 finance ,business.industry ,Toxin ,Tetanus ,05 social sciences ,T-cell receptor ,medicine.disease ,Vaccination ,medicine.anatomical_structure ,Immunology ,business ,030215 immunology - Abstract
While it is generally accepted that tissue-resident memory T lymphocytes protect host tissues from secondary immune challenges, it is unclear whether, and if so, how they contribute to systemic secondary immune responses. Here we show that in human individuals with an established immune memory to measles, mumps and rubella viruses, when challenged with the measles-mumps-rubella (MMR) vaccine again, tissue-resident memory CD4+ T cells are mobilized into the blood within 16 to 48 hours after vaccination. These cells then leave the blood again, and apparently contribute to the systemic secondary immune reaction, as is evident from the representation of mobilized T cell receptor Vβ clonotypes among newly generated circulating memory T lymphocytes, from day 7 onwards. Mobilization of the tissue-resident memory T cells is cognate, in that memory T lymphocytes recognizing other antigens, e.g. tetanus toxin, are not mobilized, unless they cross-react with the vaccine. These data originally demonstrate the essential contribution of tissue-resident memory T cells to secondary systemic immune responses, confirming that immunological memories to systemic pathogens are maintained (also) by tissue-resident memory T cells. In practical terms, the present work defines day 1 to 2 after antigenic challenge as a time window to assess the entire immunological T cell memory for a certain pathogen, including mobilized tissue-resident memory T cells, and its correlates of effectivity.Capsule summaryThe study demonstrates the rapid and cognate mobilization of tissue-resident memory CD4+ T cells into the blood upon antigenic rechallenge, and their contribution to secondary systemic immune responses.
- Published
- 2020
5. The conserved kinase UNC-51 acts with VAB-8 and UNC-14 to regulate axon outgrowth in C. elegans
- Author
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Gian Garriga and Tina Lai
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DNA, Complementary ,animal structures ,macromolecular substances ,Protein Serine-Threonine Kinases ,Biology ,Transfection ,Models, Biological ,Serine ,Two-Hybrid System Techniques ,Netrin ,Animals ,Phosphorylation ,Threonine ,Kinase activity ,Caenorhabditis elegans ,Caenorhabditis elegans Proteins ,Promoter Regions, Genetic ,Growth cone ,Molecular Biology ,Cell Proliferation ,Neurons ,Kinase ,Cell Membrane ,fungi ,food and beverages ,Axons ,Phosphoric Monoester Hydrolases ,Protein Structure, Tertiary ,Cell biology ,Cytoskeletal Proteins ,Phenotype ,nervous system ,Biochemistry ,RNA Interference ,Axon guidance ,Carrier Proteins ,Peptides ,Function (biology) ,Protein Binding ,Developmental Biology - Abstract
Directional cues guide growth cones. While molecules like UNC-6/netrin direct migrations along the dorsoventral axis of many organisms, it is unclear how anteroposterior guidance is achieved. We describe a physical interaction between VAB-8, a protein both necessary and sufficient for posteriorly directed migrations in C. elegans, and UNC-51, a conserved serine/threonine kinase that functions generally in axon outgrowth. We show that both proteins function in the CAN neurons to direct their axons posteriorly. Expression in the CANs of peptides predicted to interfere with interactions between UNC-51 and both VAB-8 and UNC-14, a second protein that interacts physically with UNC-51, disrupts CAN axon outgrowth. We provide genetic evidence that VAB-8 functions in an UNC-51 pathway for posteriorly directed CAN axon guidance and show that VAB-8 and UNC-14 can be targets of UNC-51 kinase activity. Taken together, our results suggest that VAB-8 and UNC-14 are substrates that mediate the function of UNC-51 in axon outgrowth.
- Published
- 2004
6. ARB: a software environment for sequence data
- Author
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Anton W. Ginhart, Wolfgang Ludwig, Michael May, Karl-Heinz Schleifer, Ralph Lüßmann, Stefan Gerber, Björn Nonhoff, Harald Meier, Wolfram Förster, Igor Brettske, Susanne Steppi, Gangolf Jobb, Thomas Liss, Yadhukumar, Arndt Bode, Alexandros Stamatakis, Norbert Stuckmann, Andreas König, Lothar Richter, Oliver Strunk, Alexander Vilbig, Stefan Hermann, Oliver Gross, Tina Lai, Boris Reichel, Robert Strehlow, Ralf Jost, Silke Grumann, Arno Buchner, Michael Lenke, Thomas Ludwig, and Ralf Westram
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Time Factors ,Sequence analysis ,Sequence alignment ,Biology ,computer.software_genre ,Software ,Sequence Analysis, Protein ,Databases, Genetic ,Genetics ,Phylogeny ,Graphical user interface ,Internet ,Sequence database ,Sequence Analysis, RNA ,business.industry ,Window (computing) ,Sequence Analysis, DNA ,Articles ,Tree (data structure) ,Data access ,Data Display ,Data mining ,business ,Sequence Alignment ,computer - Abstract
The ARB (from Latin arbor, tree) project was initiated almost 10 years ago. The ARB program package comprises a variety of directly interacting software tools for sequence database maintenance and analysis which are controlled by a common graphical user interface. Although it was initially designed for ribosomal RNA data, it can be used for any nucleic and amino acid sequence data as well. A central database contains processed (aligned) primary structure data. Any additional descriptive data can be stored in database fields assigned to the individual sequences or linked via local or worldwide networks. A phylogenetic tree visualized in the main window can be used for data access and visualization. The package comprises additional tools for data import and export, sequence alignment, primary and secondary structure editing, profile and filter calculation, phylogenetic analyses, specific hybridization probe design and evaluation and other components for data analysis. Currently, the package is used by numerous working groups worldwide.
- Published
- 2004
7. Comparison of Wax Extraction Methods Used in Synthetic Granular Composite Sport Surfaces
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Tina Lai, John W. Bridge, Robert M. Fisher, and Michael 'Mick' Peterson
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Wax ,Materials science ,Molecular composition ,visual_art ,Composite number ,visual_art.visual_art_medium ,Extraction methods ,Composite material - Published
- 2014
8. High-speed cryo-focusing injection for gas chromatography: reduction of injection band broadening with concentration enrichment
- Author
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Robert E. Synovec, Ryan Wilson, Roy K. Olund, Jamin C. Hoggard, Brandyn C. Mannion, Brian D. Fitz, and Tina Lai
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Detection limit ,chemistry.chemical_compound ,Analyte ,Aqueous solution ,Chromatography ,chemistry ,Chlorobenzene ,Analytical chemistry ,Methanol ,Gas chromatography ,Joule heating ,Toluene ,Analytical Chemistry - Abstract
In order to maximize peak capacity and detection sensitivity of fast gas chromatography (GC) separations, it is necessary to minimize band broadening, and in particular due to injection since this is often a major contributor. A high-speed cryo-focusing injection (HSCFI) system was constructed to first cryogenically focus analyte compounds in a 6 cm long section of metal MXT column, and second, reinject the focused analytes by rapidly resistively heating the metal column via an in-house built electronic circuit. Since the cryogenically cooled section of column is small (∼750 nl) and the direct resistive heating is fast (∼6000 °C/s), HSCFI is demonstrated to produce an analyte peak with a 6.3 ms width at half height, w(1/2). This was achieved using a 1m long column with a 180 μm inner diameter (i.d.) operated at an absolute head pressure of 55 psi and an oven temperature of 60 °C, with a 10 V pulse applied to the metal column for 50 ms. HSCFI was also used to demonstrate the head space sampling and fast GC analysis of an aqueous solution containing six test analytes (acetone, methanol, ethanol, toluene, chlorobenzene, pentanol). Using Henry's law constants for each of the analytes, injected mass limits of detection (LODs) were typically in the low pg levels (e.g., 1.2 pg for acetone) for the high speed separation. Finally, to demonstrate the use of HSCFI with a complex sample, a gasoline was separated using a 20 m × 100 μm i.d. column and the stock GC oven for temperature programming, which provided a separation time of 200 s and an average peak width at the base of 440 ms resulting in a total peak capacity of 460 peaks (at unit resolution).
- Published
- 2012
9. SOX5 Controls the Sequential Generation of Distinct Corticofugal Neuron Subtypes
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Denis Jabaudon, Paola Arlotta, Eiman Azim, Jeffrey D. Macklis, Tina Lai, Joao R.L. Menezes, and Bradley J. Molyneaux
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Stilbamidines ,Nerve Tissue Proteins/metabolism ,Stilbamidines/metabolism ,DEVBIO ,Cell Count/methods ,Cell Count ,Mice ,Nuclear Proteins/deficiency/physiology ,0302 clinical medicine ,Thalamus ,Subplate ,Neural Pathways ,Cerebral Cortex ,Neurons ,0303 health sciences ,General Neuroscience ,Gene Expression Regulation, Developmental ,Nuclear Proteins ,Cell Differentiation ,DNA-Binding Proteins ,Corticogenesis ,medicine.anatomical_structure ,Electroporation ,030220 oncology & carcinogenesis ,Neurons/classification/physiology ,SOXD Transcription Factors ,Thalamus/cytology/embryology/growth & development ,Bromodeoxyuridine/metabolism ,Neuroscience(all) ,Green Fluorescent Proteins ,Gene Expression Regulation, Developmental/physiology ,Mice, Transgenic ,Nerve Tissue Proteins ,Cerebral Cortex/cytology/embryology/growth & development ,Biology ,Electroporation/methods ,MOLNEURO ,03 medical and health sciences ,Green Fluorescent Proteins/genetics/metabolism ,medicine ,Animals ,Transcription factor ,030304 developmental biology ,Tumor Suppressor Proteins ,DNA-Binding Proteins/deficiency/physiology ,Embryo, Mammalian ,Cortex (botany) ,ddc:616.8 ,Tumor Suppressor Proteins/deficiency/physiology ,Repressor Proteins ,nervous system ,Animals, Newborn ,Bromodeoxyuridine ,Neural Pathways/cytology ,Neuron ,Neuroscience ,030217 neurology & neurosurgery ,Repressor Proteins/physiology - Abstract
SummaryThe molecular mechanisms controlling the development of distinct subtypes of neocortical projection neurons, and CNS neuronal diversity more broadly, are only now emerging. We report that the transcription factor SOX5 controls the sequential generation of distinct corticofugal neuron subtypes by preventing premature emergence of normally later-born corticofugal neurons. SOX5 loss-of-function causes striking overlap of the identities of the three principal sequentially born corticofugal neuron subtypes: subplate neurons, corticothalamic neurons, and subcerebral projection neurons. In Sox5−/− cortex, subplate neurons aberrantly develop molecular hallmarks and connectivity of subcerebral projection neurons; corticothalamic neurons are imprecisely differentiated, while differentiation of subcerebral projection neurons is accelerated. Gain-of-function analysis reinforces the critical role of SOX5 in controlling the sequential generation of corticofugal neurons—SOX5 overexpression at late stages of corticogenesis causes re-emergence of neurons with corticofugal features. These data indicate that SOX5 controls the timing of critical fate decisions during corticofugal neuron production and thus subtype-specific differentiation and neocortical neuron diversity.
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- 2008
10. O7-03 Results of coronary artery bypass grafting in patients with severe left ventricular dysfunction
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Chiao-Po Hsu, Zen-Chung Weng, Shiau-Tina Lai, Cheng-Hsiung Huang, and Fei-Yi Wu
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medicine.medical_specialty ,medicine.anatomical_structure ,Bypass grafting ,business.industry ,Internal medicine ,medicine ,Cardiology ,In patient ,Cardiology and Cardiovascular Medicine ,business ,Artery - Published
- 2004
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