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https://www.readbyqxmd.com/read/29161595/a-coincidence-detection-mechanism-controls-px-bar-domain-mediated-endocytic-membrane-remodeling-via-an-allosteric-structural-switch
#1
Wen-Ting Lo, Andreja Vujičić Žagar, Fabian Gerth, Martin Lehmann, Dymtro Puchkov, Oxana Krylova, Christian Freund, Leonardo Scapozza, Oscar Vadas, Volker Haucke
Clathrin-mediated endocytosis occurs by bending and remodeling of the membrane underneath the coat. Bin-amphiphysin-rvs (BAR) domain proteins are crucial for endocytic membrane remodeling, but how their activity is spatiotemporally controlled is largely unknown. We demonstrate that the membrane remodeling activity of sorting nexin 9 (SNX9), a late-acting endocytic PX-BAR domain protein required for constriction of U-shaped endocytic intermediates, is controlled by an allosteric structural switch involving coincident detection of the clathrin adaptor AP2 and phosphatidylinositol-3,4-bisphosphate (PI(3,4)P2) at endocytic sites...
November 20, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29151275/rav-transcription-factors-are-essential-for-disease-resistance-against-cassava-bacterial-blight-via-activation-of-melatonin-biosynthesis-genes
#2
Yunxie Wei, Yanli Chang, Hongqiu Zeng, Guoyin Liu, Chaozu He, Haitao Shi
With one AP2 domain and one B3 domain, 7 MeRAVs in apetala2/ethylene response factor (AP2/ERF) gene family have been identified in cassava. However, the in vivo roles of these remain unknown. Gene expression assays showed that the transcripts of MeRAVs were commonly regulated after Xanthomonas axonopodis pv manihotis (Xam) and MeRAVs were specifically located in plant cell nuclei. Through virus-induced gene silencing (VIGS) in cassava, we found that MeRAV1 and MeRAV2 are essential for plant disease resistance against cassava bacterial blight, as shown by the bacterial propagation of Xam in plant leaves...
November 19, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/29146946/de-novo-transcriptome-sequencing-of-meja-induced-taraxacum-koksaghyz-rodin-to-identify-genes-related-to-rubber-formation
#3
XinWen Cao, Jie Yan, JiLiang Lei, Jin Li, JianBo Zhu, HuiYan Zhang
Increase in the consumption of natural rubber (NR) has necessitated the identification of alternative sources of NR. The quality of NR produced by Taraxacum koksaghyz Rodin (TKS) is comparable to that from Hevea brasiliensis (H.brasiliensis), and therefore, TKS is being considered as an alternative source of NR. Here, we sequenced the TKS root transcriptome after wild TKS seedlings were treated with methyl jasmonate (MeJA) for 0, 6, and 24 h. The clean reads generated for each experimental line were assembled into 127,833 unigenes...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29144390/rna-sequencing-and-coexpression-analysis-reveal-key-genes-involved-in-%C3%AE-linolenic-acid-biosynthesis-in-perilla-frutescens-seed
#4
Tianyuan Zhang, Chi Song, Li Song, Zhiwei Shang, Sen Yang, Dong Zhang, Wei Sun, Qi Shen, Degang Zhao
Perillafrutescen is used as traditional food and medicine in East Asia. Its seeds contain high levels of α-linolenic acid (ALA), which is important for health, but is scarce in our daily meals. Previous reports on RNA-seq of perilla seed had identified fatty acid (FA) and triacylglycerol (TAG) synthesis genes, but the underlying mechanism of ALA biosynthesis and its regulation still need to be further explored. So we conducted Illumina RNA-sequencing in seven temporal developmental stages of perilla seeds...
November 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29138932/soybean-glycine-max-wrinkled1-transcription-factor-gmwri1a-positively-regulates-seed-oil-accumulation
#5
Liang Chen, Yuhong Zheng, Zhimin Dong, Fanfan Meng, Xingmiao Sun, Xuhong Fan, Yunfeng Zhang, Mingliang Wang, Shuming Wang
Soybean is the world's most important leguminous crop producing high-quality protein and oil. Elevating oil accumulation in soybean seed is always many researchers' goal. WRINKLED1 (WRI1) encodes a transcription factor of the APETALA2/ethylene responsive element-binding protein (AP2/EREBP) family that plays important roles during plant seed oil accumulation. In this study, we isolated and characterized three distinct orthologues of WRI1 in soybean (Glycine max) that display different organ-specific expression patterns, among which GmWRI1a was highly expressed in maturing soybean seed...
November 14, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/29133280/mat2a-promotes-porcine-adipogenesis-by-mediating-h3k27me3-at-wnt10b-locus-and-repressing-wnt-%C3%AE-catenin-signaling
#6
Cunzhen Zhao, Haigang Wu, Naren Qimuge, Weijun Pang, Xiao Li, Guiyan Chu, Gongshe Yang
Methionine adenosyltransferase (MAT) is a critical biological enzyme and that can catalyze L-met and ATP to form S-adenosylmethionine (SAM), which is acted as a biological methyl donor in transmethylation reactions involving histone methylation. However, the regulatory effect of methionine adenosyltransferase2A (MAT2A) and its associated methyltransferase activity on adipogenesis is still unclear. In this study, we investigate the effect of MAT2A on adipogenesis and its potential mechanism on histone methylation during porcine preadipocyte differentiation...
November 10, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29131853/transcriptome-analysis-of-crossostephium-chinensis-provides-insight-into-the-molecular-basis-of-salinity-stress-responses
#7
Haiyan Yang, Ming Sun, Shuangji Lin, Yanhong Guo, Yongjuan Yang, Tengxun Zhang, Jingxing Zhang
Soil salinization is becoming a limitation to the utilization of ornamental plants worldwide. Crossostephium chinensis (Linnaeus) Makino is often cultivated along the southeast coast of China for its desirable ornamental qualities and high salt tolerance. However, little is known about the genomic background of the salt tolerance mechanism in C. chinensis. In the present study, we used Illumina paired-end sequencing to systematically investigate leaf transcriptomes derived from C. chinensis seedlings grown under normal conditions and under salt stress...
2017: PloS One
https://www.readbyqxmd.com/read/29123539/the-ap2-erf-transcription-factor-drnl-modulates-gynoecium-development-and-affects-its-response-to-cytokinin
#8
Yolanda Durán-Medina, Joanna Serwatowska, J Irepan Reyes-Olalde, Stefan de Folter, Nayelli Marsch-Martínez
The gynoecium is the female reproductive system in flowering plants. It is a complex structure formed by different tissues, some that are essential for reproduction and others that facilitate the fertilization process and nurture and protect the developing seeds. The coordinated development of these different tissues during the formation of the gynoecium is important for reproductive success. Both hormones and genetic regulators guide the development of the different tissues. Auxin and cytokinin in particular have been found to play important roles in this process...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29121612/coordination-of-growth-in-root-and-shoot-apices-by-ail-plt-transcription-factors
#9
REVIEW
Ben Scheres, Beth A Krizek
Growth at the root tip and organ generation at the shoot tip depend on the proper functioning of apical meristems and the transitioning of meristematic cell descendants from a proliferating state to cell elongation and differentiation. Members of the AINTEGUMENTA-LIKE/PLETHORA (AIL/PLT) transcription factor family, a clade of two-AP2 domain proteins, specify both stem cell fate and control cellular progression of stem cell daughter cells toward differentiation. Here we highlight the importance of an AIL/PLT protein gradient in controlling distinct cellular behaviors in the root through the regulation of distinct targets in different parts of the root tip...
November 6, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/29103863/impact-of-antiplatelets-and-anticoagulants-on-the-prognosis-of-intracerebral-hemorrhage
#10
Masaaki Hokari, Daisuke Shimbo, Katsuyuki Asaoka, Kazuki Uchida, Koji Itamoto
BACKGROUND: Intracerebral hemorrhage (ICH) associated with antithrombotic therapy (AT) is becoming more common as the use of those medications increases in the aging population. METHODS: This study included 490 consecutive patients hospitalized for nontraumatic ICH in a single center during an 8-year period, which was subdivided into former (2008-2011) and latter (2012-2015). Patients were classified into those with no antithrombotic drugs (NATs) and those with AT...
November 2, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29094698/single-cell-rna-sequencing-reveals-a-signature-of-sexual-commitment-in-malaria-parasites
#11
Asaf Poran, Christopher Nötzel, Omar Aly, Nuria Mencia-Trinchant, Chantal T Harris, Monica L Guzman, Duane C Hassane, Olivier Elemento, Björn F C Kafsack
Pathogens have to balance transmission with persistence. For Plasmodium falciparum, the most widespread and virulent malaria parasite, persistence within its human host requires continuous asexual replication within red blood cells, while its mosquito-borne transmission depends on intra-erythrocytic differentiation into non-replicating sexual stages called gametocytes. Commitment to either fate is determined during the preceding cell cycle that begins with invasion by a single, asexually committed merozoite and ends, 48 hours later, with a schizont releasing newly formed merozoites, all committed to either continued asexual replication or differentiation into gametocytes...
November 2, 2017: Nature
https://www.readbyqxmd.com/read/29093332/anti-obesity-effect-of-halophyte-crop-limonium-tetragonum-in-high-fat-diet-induced-obese-mice-and-3t3-l1-adipocytes
#12
Na-Hyun Kim, Jeong-Doo Heo, Jung-Rae Rho, Min Hye Yang, Eun Ju Jeong
Halophyte Limonium tetragonum has recently been of interest in Korea for its nutritional value and salty taste which made it an ideal vegetable. In this study, the potential of L. tetragonum preventing excess weight gain, obesity and the related health problem has been evaluated in vitro and in vivo. The treatment with 100 mg/kg of L. tetragonum EtOAc soluble fraction (EALT) apparently prevented the body weight gain, adipose tissue weight gain, and the increase of triglyceride and total cholesterol level in mice fed a high-fat diet for 8 weeks...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29077145/rosuvastatin-promotes-the-differentiation-of-peripheral-blood-monocytes-into-m2-macrophages-in-patients-with-atherosclerosis-by-activating-ppar-%C3%AE
#13
T Zhang, B Shao, G-A Liu
OBJECTIVE: To evaluate M2 marker changes in human circulating monocytes before and after rosuvastatin treatment, and to investigate the effects of rosuvastatin on the differentiation of monocytes into M2 macrophages by activating peroxisome proliferator-activated receptor-γ (PPAR-γ). PATIENTS AND METHODS: A total of 20 patients was administrated with rosuvastatin. The human peripheral blood mononuclear cells (PBMCs) were extracted by Ficoll-Hypaque density gradient centrifugation method...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29074232/class-viiib-apetala2-ethylene-response-factors-in-plant-development
#14
REVIEW
John W Chandler
The APETALA2 (AP2) transcription factor superfamily in many plant species is extremely large. In addition to well-documented roles in stress responses, some AP2 members in arabidopsis, such as those of subgroup VIIIb, which includes DORNRÖSCHEN, DORNRÖSCHEN-LIKE, PUCHI, and LEAFY PETIOLE, are also important developmental regulators throughout the plant life cycle. Information is accumulating from orthologs of these proteins in important crop species that they influence key agronomic traits, such as the release of bud-burst in woody perennials and floral meristem identity and branching in cereals, and thereby represent potential for agronomic improvement...
October 23, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/29073887/effects-of-osteoglycin-ogn-on-treating-senile-osteoporosis-by-regulating-mscs
#15
Xia Chen, Junsong Chen, Dongliang Xu, Shuangxia Zhao, Huaidong Song, Yongde Peng
BACKGROUND: Significant amount of bone mass is lost during the process of aging due to an imbalance between osteoblast-mediated bone formation and osteoclast-mediated bone resorption in bone marrow microenvironment, which leads to net bone loss in the aging population, resulting in the pathogenesis of osteoporosis. METHODS: Firstly, differences in proliferative capacity of adipocyte or adipogenic differentiation in mouse mesenchymal stem cells (MMSCs) and senile mouse model-derived bone marrow mesenchymal stem cells (SMMSCs), as well as mRNA expression of OGN and PPARγ2 were observed...
October 26, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29073205/mcwri1-a-transcription-factor-of-the-ap2-shen-family-regulates-the-biosynthesis-of-the-cuticular-waxes-on-the-apple-fruit-surface-under-low-temperature
#16
Suxiao Hao, Yiyi Ma, Shuang Zhao, Qianlong Ji, Kezhong Zhang, Mingfeng Yang, Yuncong Yao
Cuticular waxes of plant and organ surfaces play an important role in protecting plants from biotic and abiotic stress and extending the freshness, storage time and shelf life in the post-harvest agricultural products. WRI1, a transcription factor of AP2/SHEN families, had been found to trigger the related genes taking part in the biosynthesis of seed oil in many plants. But whether WRI1 is involved in the biosynthesis of the cuticular waxes on the Malus fruits surface has been unclear. We investigated the changes of wax composition and structure, the related genes and WRI1 expression on Malus asiatica Nakai and sieversii fruits with the low temperature treatments, found that low temperature induced the up-regulated expression of McWRI1, which promoted gene expression of McKCS, McLACs and McWAX in very-long-chain fatty acid biosynthesis pathway, resulting in the accumulation of alkanes component and alteration of wax structure on the fruit surface...
2017: PloS One
https://www.readbyqxmd.com/read/29071567/novel-anti-adipogenic-activity-of-anti-malarial-amodiaquine-through-suppression-of-ppar%C3%AE-activity
#17
Tae Hee Kim, Hyo Kyeong Kim, Eun Sook Hwang
Amodiaquine (AQ) was developed as a selective drug against Plasmodium falciparum malaria infection and has received increasing attention as a therapeutic agent for the treatment of rheumatoid arthritis, Parkinson's disease, and cancer due to its anti-inflammatory, anti-proliferative, and autophagic-lysosomal blockade properties. As autophagy activation is involved in promoting adipogenic differentiation, we examined whether anti-autophagic AQ affected adipocyte differentiation of 3T3-L1 pre-adipocytes. AQ dose-dependently and significantly suppressed adipocyte differentiation in conjunction with decreases in lipid droplet formation and expression of adipogenic markers including adiponectin, adipocyte fatty acid-binding protein 2 (aP2), resistin, and leptin...
October 25, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29070841/an-apiap2-member-regulates-expression-of-clonally-variant-genes-of-the-human-malaria-parasite-plasmodium-falciparum
#18
Rafael M Martins, Cameron R Macpherson, Aurélie Claes, Christine Scheidig-Benatar, Hiroshi Sakamoto, Xue Yan Yam, Peter Preiser, Suchi Goel, Mats Wahlgren, Odile Sismeiro, Jean-Yves Coppée, Artur Scherf
Variegated surface antigen expression is key to chronic infection and pathogenesis of the human malaria parasite Plasmodium falciparum. This protozoan parasite expresses distinct surface molecules that are encoded by clonally variant gene families such as var, rif and stevor. The molecular mechanisms governing activation of individual members remain ill-defined. To investigate the molecular events of the initial transcriptional activation process we focused on a member of the apicomplexan ApiAP2 transcription factor family predicted to bind to the 5' upstream regions of the var gene family, AP2-exp (PF3D7_1466400)...
October 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29058311/apetala-2-domain-containing-transcription-factors-focusing-on-abscisic-acid-and-gibberellins-antagonism
#19
Kai Shu, Wenguan Zhou, Wenyu Yang
The phytohormones abscisic acid (ABA) and gibberellin (GA) antagonistically mediate diverse plant developmental processes including seed dormancy and germination, root development, and flowering time control, and thus the optimal balance between ABA and GA is essential for plant growth and development. Although more than a half and one century have passed since the initial discoveries of ABA and GA, respectively, the precise mechanisms underlying ABA-GA antagonism still need further investigation. Emerging evidence indicates that two APETALA 2 (AP2)-domain-containing transcription factors (ATFs), ABI4 in Arabidopsis and OsAP2-39 in rice, play key roles in ABA and GA antagonism...
October 23, 2017: New Phytologist
https://www.readbyqxmd.com/read/29058170/pam-ola-and-lna-are-differentially-taken-up-and-trafficked-via-different-metabolic-pathways-in-porcine-adipocytes
#20
Caihua Yu, Lingling Xi, Jin Chen, Qin Jiang, Hongbo Yi, Yizhen Wang, Xinxia Wang
Dietary fatty acids have different effects on fat deposition in pigs. To clarify the underlying mechanisms of this difference, we compared the metabolism of palmitic (PAM, saturated), oleic (OLA, monounsaturated) and linoleic acid (LNA, polyunsaturated) in porcine adipocytes treated with 100 μM PAM, OLA or LNA. We observed that the adipocytes incubated with LNA accumulated more lipids compared with those treated with PAM and OLA. We then probed the metabolism of these fatty acids in porcine adipocytes by using isotope-labelled fatty acids...
November 2017: Lipids
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