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Local HY5 Activity Mediates Hypocotyl Growth and Shoot-to-Root Communication

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Plant Communications 2020年第5期1卷 64-72页

作者： Yogev Burko Christophe Gaillochet Adam Seluzicki joanne Chory Wolfgang Busch Howard Hughes Medical Institute Salk Institute for Biological StudiesLa JollaCA 92037USA Plant Biology Laboratory Salk Institute for Biological Studies10010 North Torrey Pines RoadLa JollaCA 92037USA Integrative Biology Laboratory Salk Institute for Biological Studies10010 North Torrey Pines RoadLa JollaCA 92037USA

Plants optimize their growth in fluctuating environments using information acquired by different *** information is then transmitted through the rest of the plant using both short-and long-distance signals,including hormones and mobile *** a few of these signals have been characterized,long-distance signaling is not well understood in ***,the light-regulated transcription factor HY5 was reported to move from the shoot to the root to regulate root *** generated a cell-type specifically expressed HY5 fusion protein that could not be detected outside the tissue in which it was *** expressing this DOF-HY5 protein in specific cell types of the hypocotyl,we showed that its local activity was sufficient to regulate hypocotyl *** also found that,although DOF-HY5 was expressed specifically in the shoot and not detected in the roots,it could rescue hy5 growth defects in primary roots but not in lateral *** therefore conclude that HY5 protein mobility is not required in the hypocotyl or for shoot-to-root *** results indicate that a signal downstream of,or in parallel with,HY5 in the shoot is mobile and links shoot and root growth.

关键词： HY5 shoot-to-root communication hypocotyl root lateral root Arabidopsis

Ensuring that the outcome domains proposed for use in burns research are relevant to adult burn patients:a systematic review of qualitative research evidence

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Burns & Trauma 2020年第1期8卷 55-66页

作者： Jonathan Mathers Naiem Moiemen Amy Bamford Fay Gardiner joanne Tarver Institute of Applied Health Research University of BirminghamBirminghamB152TTUK The Scar Free Foundation Centre for Burns Research Queen Elizabeth HospitalUniversity Hospitals Birmingham NHS Foundation TrustMindelsohn WayEdgbastonBirminghamB152WBUK School of Life&Health Sciences Aston UniversityAston TriangleBirminghamB47ETUK

Background:There have been several attempts to define core outcome domains for use in research focused on adult *** have been based in expert opinion,whilst others have used primary qualitative research to understand patients’perspectives on *** date there has not been a systematic review of qualitative research in burns to identify a comprehensive list of patientcentred outcome *** therefore conducted a systematic review of qualitative research studies in adult ***:We searched multiple databases for English-language,peer-reviewed,qualitative research *** used search strategies devised using the SPIDER tool for qualitative *** review utilized an iterative three-step approach:(1)outcome-focused coding;(2)development of descriptive accounts of outcome-relevant issues;and(3)revisiting studies and the broader theoretical literature in order to frame the review ***:Forty-one articles were *** categorized papers according to their primary *** category with the most papers was adaptation to life following burn injury(n=13).We defined 19 outcome domains across the 41 articles:(1)sense of self;(2)emotional and psychological morbidity;(3)sensory;(4)scarring and scar characteristics;(5)impact on relationships;(6)mobility and range of joint motion;(7)work;(8)activities of daily living and self-care;(9)treatment burden;(10)engagement in activities;(11)wound healing and infection;(12)other physical manifestations;(13)financial impact;(14)impact on spouses and family members;(15)analgesia and side effects;(16)cognitive skills;(17)length of hospital stay;(18)access to healthcare;and(19)speech and *** suggest that sense of self is a core concern for patients that,to date,has not been clearly conceptualized in the burns outcome domain ***:This outcome domain framework identifies domains that are not covered in previous attempts to outline core outcome domains for adult burn rese

关键词： Outcome domains Adult burns Qualitative research Systematic review

Combined influence of basal media and fibroblast growth factor on the expansion and differentiation capabilities of adipose-derived stem cells

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Cell Regeneration 2014年第1期3卷 98-105页

作者： Mark Ahearne joanne Lysaght Amy P Lynch Trinity Centre for Bioengineering Trinity Biomedical Sciences InstituteTrinity College DublinDublinIreland Department of Mechanical and Manufacturing Engineering School of EngineeringTrinity College DublinDublinIreland Department of Surgery Institute of Molecular MedicineTrinity Centre for Health SciencesSt.James’s HospitalDublin 8Ireland.

Background: Interest in adipose-derived stem cells (ASCs) has increased in recent years due to their multi-linagedifferentiation capabilities. While much work has been done to optimize the differentiation media, few studies havefocused on examining the influence of different expansion media on cell behavior. In this study, three basal media(low glucose Dulbecco’s modified Eagle’s medium (DMEM), high glucose DMEM and DMEM-F12) supplementedwith or without fibroblast growth factor 2 (FGF) were examined to assess their suitability for expanding ***: Flow cytometry, colony-forming unit assays (CFU-Fs) and differentiation assays were utilized to study cellbehavior. High glucose media CFU-Fs produced fewest colonies while the addition of FGF increased colony *** passage 2, the majority of cells were positive for CD44, 45, 73, 90 and 105 and negative for CD14, 31 and 45,indicating a mesenchymal phenotype. A sub-population of CD34 positive cells was present among passage 2 cells;however, by passage 4 the cells were negative for CD34. FGF has a negative effective on passage 4 ASC adipogenesisand high glucose media plus FGF-enhanced osteogenic capacity of passage 4 ASCs. FGF supplemented basal mediawere most suitable for chondrogenesis. High glucose media plus FGF appeared to be the most beneficial for primingASCs to induce a keratocyte ***: These findings demonstrate the reciprocal effect FGF and basal media have on ASCs. This research hasimplications for those interested regenerating bone, cartilage, cornea or adipose tissues.

关键词： Cell differentiation Cartilage Bone Adipose Cornea

Synthesis and Ex Situ Doping of ZnTe and ZnSe Nanostructures with Extreme Aspect Ratios

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Nano Research 2009年第12期2卷 931-937页

作者： joanne W.L.Yim Deirdre Chen Gregory F.Brown Junqiao Wu Department of Materials Science and Engineering University of CaliforniaBerkeleyCA 94720USA Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA

We report synthesis windows for growth of millimeter-long ZnTe nanoribbons and ZnSe nanowires using vapor *** tuning the local conditions at the growth substrate,high aspect ratio nanostructures can be synthesized.A Cu-ion immersion doping method was applied,producing strongly p-type conduction in ZnTe and ionic conduction in *** extreme aspect ratio wide-bandgap semiconductors have great potential for high density nanostructured optoelectronic circuits.

关键词： Aspect ratio doping nanowires zinc selenide zinc telluride

Carcinogenesis on the background of liver fibrosis: Implications for the management of hepatocellular cancer

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World Journal of Gastroenterology 2018年第39期24卷 4436-4447页

作者： joanne Marie O'Rourke Vandana Mridhu Sagar Tahir Shah Shishir Shetty Centre for Liver Research Institute of Biomedical ResearchBirmingham B15 2TTUnited Kingdom NIHR Birmingham Biomedical Research Centre University of Birmingham and University Hospitals Birmingham NHS Foundation Trust

Hepatocellular carcinoma(HCC) is now the second leading cause of cancer-related deaths globally and many patients have incurable disease. HCC predominantly occurs in the setting of liver cirrhosis and is a paradigm for inflammation-induced cancer. The causes of chronic liver disease promote the development of transformed or premalignant hepatocytes and predisposes to the development of HCC. For HCC to grow and progress it is now clear that it requires an immunosuppressive niche within the fibrogenic microenvironment of cirrhosis. The rationale for targeting this immunosuppression is supported by responses seen in recent trials with checkpoint inhibitors. With the impact of immunotherapy, HCC progression may be delayed and long term durable responses may be seen. This makes the management of the underlying liver cirrhosis in HCC even more crucial as studies demonstrate that measures of liver function are a major prognostic factor in HCC. In this review, we discuss the development of cancer in the setting of liver inflammation and fibrosis, reviewing the microenvironment that leads to this tumourigenic climate and the implications this has for patient management.

关键词： Hepatocellular cancer Carcinogenesis Inflammation Fibrosis Immunotherapy

Marker-Assisted Breeding of Thermo-Sensitive Genic Male Sterile Line 1892S for Disease Resistance and Submergence Tolerance

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Rice science 2021年第1期28卷 89-98页

作者： Luo Yanchang Ma Tingchen joanne Teo Luo Zhixiang Li Zefu Yang Jianbo Yin Zhongchao Temasek Life Sciences Laboratory 1 Research LinkNational University of SingaporeSingapore 117604Republic of Singapore Key Laboratory of Rice Genetics and Breeding Rice Research InstituteAnhui Academy of Agricultural SciencesHefei 230031China Department of Biological Sciences National University of Singapore14 Science Drive 4Singapore 117543Republic of Singapore

Rice line 1892S is an elite thermo-sensitive genic male sterile(TGMS)line for two-line hybrid rice ***,1892S is susceptible to rice blast,bacterial blight and *** we reported the introduction of blast resistance(R)gene Pi9,bacterial blight R gene Xa21 and submergence tolerance gene Sub1A into 1892S genetic background through backcrossing and marker-assisted *** improved TGMS line 31892S and its hybrids conferred disease resistance to rice blast and bacterial blight,and showed submergence tolerance for over 14 d without significant loss of *** sterility-fertility conversion of 31892S was similar to that of 1892S.31892S and its derived hybrid rice had similar agronomic traits and grain quality with 1892S and the control hybrid rice,*** newly developed 31892S provided an improved TGMS line for two-line hybrid rice production with disease resistance to rice blast and bacterial blight,and submergence tolerance with no yield penalty or change in grain quality.

关键词： thermo-sensitive genic male sterility bacterial blight rice blast submergence tolerance disease resistance marker-assisted selection

Challenges in developing therapeutic strategies for mild neonatal encephalopathy

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Neural Regeneration Research 2022年第2期17卷 277-282页

作者： Alice McDouall Guido Wassink Laura Bennet Alistair J.Gunn joanne O.Davidson Department of Physiology The University of AucklandAucklandNew Zealand

There is increasing evidence that infants with mild neonatal encephalopathy(NE) have significant risks of mortality, brain injury and adverse neurodevelopmental outcomes. In the era of therapeutic hypothermia, infants need to be diagnosed within 6 hours of birth, corresponding with the window of opportunity for treatment of moderate to severe NE, compared to the retrospective grading over 2 to 3 days, typically with imaging and formal electroencephalographic assessment in the pre-hypothermia era. This shift in diagnosis may have increased the apparent prevalence of brain damage and poor neurological outcomes seen in infants with mild NE in the era of hypothermia. Abnormal short term outcomes observed in infants with mild NE include seizures, abnormal neurologic examination at discharge, abnormal brain magnetic resonance imaging and difficulty feeding. At 2 to 3 years of age, mild NE has been associated with an increased risk of autism, language and cognitive deficits. There are no approved treatment strategies for these infants as they were not included in the initial randomized controlled trials for therapeutic hypothermia. However, there is already therapeutic creep, with many centers treating infants with mild NE despite the limited evidence for its safety and efficacy. The optimal duration of treatment and therapeutic window of opportunity for effective treatment need to be specifically established for mild NE as the evolution of injury is likely to be slower, based on preclinical data. Randomized controlled trials of therapeutic hypothermia for infants with mild NE are urgently required to establish the safety and efficacy of treatment. This review will examine the evidence for adverse outcomes after mild NE and dissect some of the challenges in developing therapeutic strategies for mild NE, before analyzing the evidence for therapeutic hypothermia and other strategies for treatment of these infants.

关键词： asphyxia electroencephalogram erythropoietin mild hypoxic ischemic encephalopathy neonatal encephalopathy neurological examination neuroprotection Sarnat score therapeutic hypothermia

Overexpression of the bacterial tryptophan oxidase RebO affects auxin biosynthesis and Arabidopsis development

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Science Bulletin 2016年第11期61卷 859-867页

作者： Yangbin Gao Xinhua Dai Zuyu Zheng Hiroyuki Kasahara Yuji Kamiya joanne Chory David Ballou Yunde Zhao Section of Cell and Developmental Biology University of California San Diego La Jolla CA 92093 USA Plant Biology Laboratory Salk Institute for Biological StudiesLa Jolla CA 92037 USA Plant Science Center RIKEN Yokohama Kanagawa 230-0045Japan The Global Innovation Research Organization Tokyo University of Agriculture and Technology Fuchu 183-8509 Japan Department of Biological Chemistry University of MichiganAnn Arbor MI 48109 USA

Both tryptophan （Trp） and auxin are essential for plant growth and Trp is a precursor for auxin biosynthesis. Concentrations of Trp and auxin need to be tightly con- trolled to ensure optimal growth and development. It has been very difficult to study the homeostasis of these two essential and inter-dependent compounds. Auxin is mainly synthesized from Trp via a two-step pathway using indole- 3-pyruvate （IPA） as the intermediate. Here we used a bacterial Trp oxidase RebO, which does not exist in Ara- bidopsis and which converts Trp to the imine form of IPA, to modulate IPA levels in Arabidopsis. Our results demonstrate that Arabidopsis plants use two strategies to ensure that no excess IPA is made from Trp. IPA is made from Trp by the TAA family of aminotransferases, which we show catalyzes the reverse reaction when IPA level is high. Moreover, excess IPA is converted back to Trp by the YAS1 aminotransferase. We show that the VASl-cat- alyzed reaction is very important for Trp homeostasis. This work not only elucidates the intricate biochemical mech- anisms that control the homeostasis of Trp, IPA, and auxin, but also provides novel tools for further biochemical studies on Tip metabolism and auxin biosynthesis in plants.

关键词： Auxin RebO Trp Arabidopsis Metabolism