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https://www.readbyqxmd.com/read/29617359/sexual-dimorphism-of-sleep-regulated-by-juvenile-hormone-signaling-in-drosophila
#1
Binbin Wu, Lingling Ma, Enyan Zhang, Juan Du, Suning Liu, Jeffrey Price, Sheng Li, Zhangwu Zhao
Sexually dimorphic phenotypes are a universal phenomenon in animals. In the model animal fruit fly Drosophila, males and females exhibit long- and short-sleep phenotypes, respectively. However, the mechanism is still a mystery. In this study, we showed that juvenile hormone (JH) is involved in regulation of sexually dimorphic sleep in Drosophila, in which gain of JH function enlarges differences of the dimorphic sleep phenotype with higher sleep in males and lower sleep in females, while loss of JH function blurs these differences and results in feminization of male sleep and masculinization of female sleep...
April 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29604224/mutations-in-vps13d-lead-to-a-new-recessive-ataxia-with-spasticity-and-mitochondrial-defects
#2
Eunju Seong, Ryan Insolera, Marija Dulovic, Erik-Jan Kamsteeg, Joanne Trinh, Norbert Brüggemann, Erin Sandford, Sheng Li, Ayse Bilge Ozel, Jun Z Li, Tamison Jewett, Anneke J A Kievit, Alexander Münchau, Vikram Shakkottai, Christine Klein, Catherine A Collins, Katja Lohmann, Bart P van de Warrenburg, Margit Burmeister
OBJECTIVE: To identify novel causes of recessive ataxias, including spinocerebellar ataxia with saccadic intrusions, spastic ataxias, and spastic paraplegia. METHODS: In an international collaboration, we independently performed exome sequencing in 7 families with recessive ataxia and/or spastic paraplegia. To evaluate the role of VPS13D mutations, we evaluated a Drosophila knockout model and investigated mitochondrial function in patient-derived fibroblast cultures...
March 31, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29205800/cucurbitacin-b-acts-a-potential-insect-growth-regulator-by-antagonizing-20-hydroxyecdysone-activity
#3
Chuanshan Zou, Guifen Liu, Suning Liu, Shumin Liu, Qisheng Song, Jian Wang, Qili Feng, Yunlin Su, Sheng Li
BACKGROUND: 20-Hydroxyecdysone (20E), a crucial insect steroid hormone, can bind to its cognate nuclear receptor composed of ecdysone receptor (EcR) and ultraspiracle (USP) to activate expression of 20E-response genes, enabling subsequent metamorphosis. In this study, we tried to find out which steroid-like compounds can block insect metamorphosis effectively and provide useful information for biopesticide study. For this purpose, we screened 126 steroid-like compounds for possible 20E antagonists using a dual-luciferase reporter assay with Drosophila melanogaster Kc and Bombyx mori Bm12 cells...
June 2018: Pest Management Science
https://www.readbyqxmd.com/read/29180716/drosophila-kruppel-homolog-1-represses-lipolysis-through-interaction-with-dfoxo
#4
Ping Kang, Kai Chang, Ying Liu, Mark Bouska, Allison Birnbaum, Galina Karashchuk, Rachel Thakore, Wenjing Zheng, Stephanie Post, Colin S Brent, Sheng Li, Marc Tatar, Hua Bai
Transcriptional coordination is a vital process contributing to metabolic homeostasis. As one of the key nodes in the metabolic network, the forkhead transcription factor FOXO has been shown to interact with diverse transcription co-factors and integrate signals from multiple pathways to control metabolism, oxidative stress response, and cell cycle. Recently, insulin/FOXO signaling has been implicated in the regulation of insect development via the interaction with insect hormones, such as ecdysone and juvenile hormone...
November 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29130960/piwi-proteins-and-piwi-interacting-rna-emerging-roles-in-cancer
#5
REVIEW
Yi-Neng Han, Yuan Li, Sheng-Qiang Xia, Yuan-Yuan Zhang, Jun-Hua Zheng, Wei Li
P-Element induced wimpy testis (PIWI)-interacting RNAs (piRNAs) are a type of noncoding RNAs (ncRNAs) and interact with PIWI proteins. piRNAs were primarily described in the germline, but emerging evidence revealed that piRNAs are expressed in a tissue-specific manner among multiple human somatic tissue types as well and play important roles in transposon silencing, epigenetic regulation, gene and protein regulation, genome rearrangement, spermatogenesis and germ stem-cell maintenance. PIWI proteins were first discovered in Drosophila and they play roles in spermatogenesis, germline stem-cell maintenance, self-renewal, retrotransposons silencing and the male germline mobility control...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29118190/juvenile-hormone-and-20-hydroxyecdysone-coordinately-control-the-developmental-timing-of-matrix-metalloproteinase-induced-fat-body-cell-dissociation
#6
Qiangqiang Jia, Suning Liu, Di Wen, Yongxu Cheng, William G Bendena, Jian Wang, Sheng Li
Tissue remodeling is a crucial process in animal development and disease progression. Coordinately controlled by the two main insect hormones, juvenile hormone (JH) and 20-hydroxyecdysone (20E), tissues are remodeled context-specifically during insect metamorphosis. We previously discovered that two matrix metalloproteinases (Mmps) cooperatively induce fat body cell dissociation in Drosophila However, the molecular events involved in this Mmp-mediated dissociation are unclear. Here we report that JH and 20E coordinately and precisely control the developmental timing of Mmp-induced fat body cell dissociation...
December 29, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28939483/mkk4-from-litopenaeus-vannamei-is-a-regulator-of-p38-mapk-kinase-and-involved-in-anti-bacterial-response
#7
Sheng Wang, Bin Yin, Haoyang Li, Bang Xiao, Kai Lǚ, Chiguang Feng, Jianguo He, Chaozheng Li
LvMKK4, a homologue of the mammalian mitogen-activated protein kinase kinase 4 (MKK4), was isolated and identified from Litopenaeus vannamei in the present study. The full-length cDNA of LvMKK4 is 1947 bp long, with an open reading frame (ORF) of 1185 bp encoding a putative protein of 388 amino acids. LvMKK4 contains several characteristic domains such as D domain, SIAKT motif and kinase domain, all of which are conserved in MAP kinase kinase family. Like mammalian MKK4 but not Drosophila MKK4, LvMKK4 could bind to, phosphorylate and activate p38 MAPK, which provided some insights into the signal transduction mechanism of MKK4-p38 cascade in invertebrates...
January 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28569426/structure-and-expression-of-sulfatase-and-sulfatase-modifying-factor-genes-in-the-diamondback-moth-plutella-xylostella-l
#8
Xiao-Li Ma, Wei-Yi He, Wei Chen, Xue-Jiao Xu, Wei-Ping Qi, Ming-Min Zou, Yan-Chun You, Simon W Baxter, Ping Wang, Min-Sheng You
The diamondback moth, Plutella xylostella (L.), uses sulfatases (SULF) to counteract the glucosinolate-myrosinase defensive system that cruciferous plants have evolved to deter insect feeding. Sulfatase activity is regulated by post-translational modification of a cysteine residue by sulfatase modifying factor 1 (SUMF1). We identified 12 SULF genes (PxylSulfs) and two SUMF1 genes (PxylSumf1s) in the P. xylostella genome. Phylogenetic analysis of SULFs and SUMFs from P. xylostella, Bombyx mori, Manduca sexta, Heliconius melpomene, Danaus plexippus, Drosophila melanogaster, Tetranychus urticae and Homo sapiens showed that the SULFs were clustered into five groups, and the SUMFs could be divided into two groups...
June 1, 2017: Insect Science
https://www.readbyqxmd.com/read/28188867/bombyx-mori-serpin6-regulates-prophenoloxidase-activity-and-the-expression-of-antimicrobial-proteins
#9
Bing Li, Hai-Zhong Yu, Chong-Jun Ye, Yan Ma, Xing Li, Tao Fan, Fu-Sheng Chen, Jia-Ping Xu
Serpins are a family of serine protease inhibitors that are found widely in insects. They play an important role in insect physiological responses, such as innate immunity and development. In this study, we obtained the Bombyx mori serpin6 (BmSerpin6) sequence from National Center for Biotechnology Information (NCBI) and the silkworm genome database (SilkDB). Reverse transcription PCR (RT-PCR) results showed that BmSerpin6 was expressed highly in hemocytes, the midgut, and the fat body. After challenging with Micrococcus luteus (Mi) and Serratia marcescens (Sm), the BmSerpin6 expression level was induced significantly...
April 30, 2017: Gene
https://www.readbyqxmd.com/read/28107360/correction-methyl-farnesoate-plays-a-dual-role-in-regulating-drosophila-metamorphosis
#10
Di Wen, Crisalejandra Rivera-Perez, Mohamed Abdou, Qiangqiang Jia, Qianyu He, Xi Liu, Ola Zyaan, Jingjing Xu, William G Bendena, Stephen S Tobe, Fernando G Noriega, Subba R Palli, Jian Wang, Sheng Li
[This corrects the article DOI: 10.1371/journal.pgen.1005038.].
January 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28069434/identification-and-functional-analysis-of-a-tep-gene-from-a-crustacean-reveals-its-transcriptional-regulation-mediated-by-nf-%C3%AE%C2%BAb-and-jnk-pathways-and-its-broad-protective-roles-against-multiple-pathogens
#11
Chaozheng Li, Haoyang Li, Bang Xiao, Yonggui Chen, Sheng Wang, Kai Lǚ, Bin Yin, Sedong Li, Jianguo He
Thioester-containing proteins (TEPs) are present in a wide range of species from deuterostomes to protostomes and are thought to be involved in innate immunity. In the current study, a TEP gene homologous to insect TEPs (iTEP) from the crustacean Litopenaeus vannamei, named LvTEP1, is cloned and functionally characterized. The open reading frame (ORF) of LvTEP1 is 4383 bp in length, encoding a polypeptide of 1460 amino acids with a calculated molecular weight of 161.1 kDa LvTEP1, which is most similar to other TEPs from insects, contains some conserved sequence features, including a N-terminal signal peptide, a canonical thioester (TE) motif, and a C-terminal distinctive cysteine signature...
May 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/27979731/nucleoporin-nup358-facilitates-nuclear-import-of-methoprene-tolerant-met-in-an-importin-%C3%AE-and-hsp83-dependent-manner
#12
Qianyu He, Yuanxi Zhang, Xu Zhang, DanDan Xu, Wentao Dong, Sheng Li, Rui Wu
The bHLH-PAS transcription factor, Methoprene-tolerant (Met)1 , functions as a juvenile hormone (JH) receptor and transduces JH signals by directly binding to E-box like motifs in the regulatory regions of JH response genes. Nuclear localization of Met is crucial for its transcriptional activity. Our previous studies have shown that the chaperone protein Hsp83 facilitates JH-induced Met nuclear import in Drosophila melanogaster. However, the exact molecular mechanisms of Met nuclear transport are not fully elucidated...
February 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27790859/dimethyl-sulfide-protects-against-oxidative-stress-and-extends-lifespan-via-a-methionine-sulfoxide-reductase-a-dependent-catalytic-mechanism
#13
Xin-Lei Guan, Peng-Fei Wu, Sheng Wang, Juan-Juan Zhang, Zu-Cheng Shen, Han Luo, Hao Chen, Li-Hong Long, Jian-Guo Chen, Fang Wang
Methionine (Met) sulfoxide reductase A (MsrA) is a key endogenous antioxidative enzyme with longevity benefits in animals. Only very few approaches have been reported to enhance MsrA function. Recent reports have indicated that the antioxidant capability of MsrA may involve a Met oxidase activity that facilities the reaction of Met with reactive oxygen species (ROS). Herein, we used a homology modeling approach to search the substrates for the oxidase activity of MsrA. We found that dimethyl sulfide (DMS), a main metabolite that produced by marine algae, emerged as a good substrate for MsrA-catalytic antioxidation...
April 2017: Aging Cell
https://www.readbyqxmd.com/read/27497874/shrimp-with-knockdown-of-lvsocs2-a-negative-feedback-loop-regulator-of-jak-stat-pathway-in-litopenaeus-vannamei-exhibit-enhanced-resistance-against-wssv
#14
Sheng Wang, Xuan Song, Zijian Zhang, Haoyang Li, Kai Lǚ, Bin Yin, Jianguo He, Chaozheng Li
JAK/STAT pathway is one of cytokine signaling pathways and mediates diversity immune responses to protect host from viral infection. In this study, LvSOCS2, a member of suppressor of cytokine signaling (SOCS) families, has been cloned and identified from Litopenaeus vannamei. The full length of LvSOCS2 is 1601 bp, including an 1194 bp open reading frame (ORF) coding for a putative protein of 397 amino acids with a calculated molecular weight of ∼42.3 kDa. LvSOCS2 expression was most abundant in gills and could respond to the challenge of LPS, Vibrio parahaemolyticus, Staphhylococcus aureus, Poly (I: C) and white spot syndrome virus (WSSV)...
December 2016: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/27489496/yorkie-facilitates-organ-growth-and-metamorphosis-in-bombyx
#15
Shumin Liu, Panli Zhang, Hong-Sheng Song, Hai-Sheng Qi, Zhao-Jun Wei, Guozheng Zhang, Shuai Zhan, Zhihong Liu, Sheng Li
The Hippo pathway, which was identified from genetic screens in the fruit fly, Drosophila melanogaster, has a major size-control function in animals. All key components of the Hippo pathway, including the transcriptional coactivator Yorkie that is the most critical substrate and downstream effector of the Hippo kinase cassette, are found in the silkworm, Bombyx mori. As revealed by microarray and quantitative real-time PCR, expression of Hippo pathway genes is particularly enriched in several mitotic tissues, including the ovary, testis, and wing disc...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27226059/molecular-characterization-of-autophagy-related-gene-5-from-spodoptera-exigua-and-expression-analysis-under-various-stress-conditions
#16
Kai-Yu Liu, Yu-Qian Xia, Jing Zhou, Zu-Wen Chen, Dandan Lu, Ning-Zhao Zhang, Xu-Sheng Liu, Hui Ai, Li-Lin Zhou
Autophagy is not only involved in development, but also has been proved to attend immune response against invading pathogens. Autophagy protein 5 (ATG5) is an important autophagic protein, which plays a crucial role in autophagosome elongation. Although ATG5 has been well studied in mammal, yeast, and Drosophila, little is known about ATG5 in lepidopteran insects. We cloned putative SeAtg5 gene from Spodoptera exigua larvae by the rapid amplification of cDNA ends method, and its characteristics and the influences of multiple exogenous factors on its expression levels were then investigated...
August 2016: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/27225265/a-new-method-for-quantifying-mitochondrial-axonal-transport
#17
Mengmeng Chen, Yang Li, Mengxue Yang, Xiaoping Chen, Yemeng Chen, Fan Yang, Sheng Lu, Shengyu Yao, Timothy Zhou, Jianghong Liu, Li Zhu, Sidan Du, Jane Y Wu
Axonal transport of mitochondria is critical for neuronal survival and function. Automatically quantifying and analyzing mitochondrial movement in a large quantity remain challenging. Here, we report an efficient method for imaging and quantifying axonal mitochondrial transport using microfluidic-chamber-cultured neurons together with a newly developed analysis package named "MitoQuant". This tool-kit consists of an automated program for tracking mitochondrial movement inside live neuronal axons and a transient-velocity analysis program for analyzing dynamic movement patterns of mitochondria...
November 2016: Protein & Cell
https://www.readbyqxmd.com/read/27056762/escrt-0-complex-modulates-rbf-mutant-cell-survival-by-regulating-rhomboid-endosomal-trafficking-and-egfr-signaling
#18
Zhentao Sheng, Lijia Yu, Tianyi Zhang, Xun Pei, Xuan Li, Zhihua Zhang, Wei Du
The Rb tumor suppressor is conserved in Drosophila, and its inactivation can lead to cell proliferation or death depending on the specific cellular context. Therefore, identifying genes that affect the survival of Rb-mutant cells can potentially identify novel targets for therapeutic intervention in cancer. From a genetic screen in Drosophila, we identified synthetic lethal interactions between mutations of fly Rb (rbf) and the ESCRT-0 components stam and hrs We show that inactivation of ESCRT-0 sensitizes rbf-mutant cells to undergo apoptosis through inhibition of EGFR signaling and accumulation of Hid protein...
May 15, 2016: Journal of Cell Science
https://www.readbyqxmd.com/read/27033469/identification-and-characterization-of-transforming-growth-factor-%C3%AE-activated-kinase-1-from-litopenaeus-vannamei-involved-in-anti-bacterial-host-defense
#19
Sheng Wang, Haoyang Li, Kai Lǚ, Zhe Qian, Shaoping Weng, Jianguo He, Chaozheng Li
LvTAK1, a member of transforming growth factor β-activated kinase 1 (TAK1) families, has been identified from Litopenaeus vannamei in this study. The full length of LvTAK1 is 2670 bp, including a 2277 bp open reading frame (ORF) that encoded a putative protein of 758 amino acids with a calculated molecular weight of ∼83.4 kDa LvTAK1 expression was most abundant in muscles and was up-regulated in gills after LPS, Vibrio parahaemolyticus, Staphylococcus aureus, Poly (I:C) and WSSV challenge. Both in vivo and in vitro experiments indicated that LvTAK1 could activate the expression of several antimicrobial peptide genes (AMPs)...
May 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/26923590/drosophila-vision-depends-on-carcinine-uptake-by-an-organic-cation-transporter
#20
Ratna Chaturvedi, Zhuo Luan, Peiyi Guo, Hong-Sheng Li
Recycling of neurotransmitters is essential for sustained neuronal signaling, yet recycling pathways for various transmitters, including histamine, remain poorly understood. In the first visual ganglion (lamina) of Drosophila, photoreceptor-released histamine is taken up into perisynaptic glia, converted to carcinine, and delivered back to the photoreceptor for histamine regeneration. Here, we identify an organic cation transporter, CarT (carcinine transporter), that transports carcinine into photoreceptors during histamine recycling...
March 8, 2016: Cell Reports
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