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Genes, Volume 7, Issue 5 (May 2016) – 5 articles

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Review
The Roles of NDR Protein Kinases in Hippo Signalling
Genes 2016, 7(5), 21; https://0-doi-org.brum.beds.ac.uk/10.3390/genes7050021 - 18 May 2016
Cited by 49 | Viewed by 4331
Abstract
The Hippo tumour suppressor pathway has emerged as a critical regulator of tissue growth through controlling cellular processes such as cell proliferation, death, differentiation and stemness. Traditionally, the core cassette of the Hippo pathway includes the MST1/2 protein kinases, the LATS1/2 protein kinases, [...] Read more.
The Hippo tumour suppressor pathway has emerged as a critical regulator of tissue growth through controlling cellular processes such as cell proliferation, death, differentiation and stemness. Traditionally, the core cassette of the Hippo pathway includes the MST1/2 protein kinases, the LATS1/2 protein kinases, and the MOB1 scaffold signal transducer, which together regulate the transcriptional co-activator functions of the proto-oncoproteins YAP and TAZ through LATS1/2-mediated phosphorylation of YAP/TAZ. Recent research has identified additional kinases, such as NDR1/2 (also known as STK38/STK38L) and MAP4Ks, which should be considered as novel members of the Hippo core cassette. While these efforts helped to expand our understanding of Hippo core signalling, they also began to provide insights into the complexity and redundancy of the Hippo signalling network. Here, we focus on summarising our current knowledge of the regulation and functions of mammalian NDR kinases, discussing parallels between the NDR pathways in Drosophila and mammals. Initially, we provide a general overview of the cellular functions of NDR kinases in cell cycle progression, centrosome biology, apoptosis, autophagy, DNA damage signalling, immunology and neurobiology. Finally, we put particular emphasis on discussing NDR1/2 as YAP kinases downstream of MST1/2 and MOB1 signalling in Hippo signalling. Full article
(This article belongs to the Special Issue Hippo Signaling Pathway)
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Article
Transcriptome-Wide Survey and Expression Profile Analysis of Putative Chrysanthemum HD-Zip I and II Genes
Genes 2016, 7(5), 19; https://0-doi-org.brum.beds.ac.uk/10.3390/genes7050019 - 17 May 2016
Cited by 6 | Viewed by 3013
Abstract
The homeodomain-leucine zipper (HD-Zip) transcription factor family is a key transcription factor family and unique to the plant kingdom. It consists of a homeodomain and a leucine zipper that serve in combination as a dimerization motif. The family can be classified into four [...] Read more.
The homeodomain-leucine zipper (HD-Zip) transcription factor family is a key transcription factor family and unique to the plant kingdom. It consists of a homeodomain and a leucine zipper that serve in combination as a dimerization motif. The family can be classified into four subfamilies, and these subfamilies participate in the development of hormones and mediation of hormone action and are involved in plant responses to environmental conditions. However, limited information on this gene family is available for the important chrysanthemum ornamental species (Chrysanthemum morifolium). Here, we characterized 17 chrysanthemum HD-Zip genes based on transcriptome sequences. Phylogenetic analyses revealed that 17 CmHB genes were distributed in the HD-Zip subfamilies I and II and identified two pairs of putative orthologous proteins in Arabidopsis and chrysanthemum and four pairs of paralogous proteins in chrysanthemum. The software MEME was used to identify 7 putative motifs with E values less than 1e-3 in the chrysanthemum HD-Zip factors, and they can be clearly classified into two groups based on the composition of the motifs. A bioinformatics analysis predicted that 8 CmHB genes could be targeted by 10 miRNA families, and the expression of these 17 genes in response to phytohormone treatments and abiotic stresses was characterized. The results presented here will promote research on the various functions of the HD-Zip gene family members in plant hormones and stress responses. Full article
(This article belongs to the Section Population and Evolutionary Genetics and Genomics)
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Communication
The Complete Chloroplast Genome of the Hare’s Ear Root, Bupleurum falcatum: Its Molecular Features
Genes 2016, 7(5), 20; https://0-doi-org.brum.beds.ac.uk/10.3390/genes7050020 - 13 May 2016
Cited by 10 | Viewed by 2534
Abstract
Bupleurum falcatum, which belongs to the family Apiaceae, has long been applied for curative treatments, especially as a liver tonic, in herbal medicine. The chloroplast (cp) genome has been an ideal model to perform the evolutionary and comparative studies because of its [...] Read more.
Bupleurum falcatum, which belongs to the family Apiaceae, has long been applied for curative treatments, especially as a liver tonic, in herbal medicine. The chloroplast (cp) genome has been an ideal model to perform the evolutionary and comparative studies because of its highly conserved features and simple structure. The Apiaceae family is taxonomically close to the Araliaceae family and there have been numerous complete chloroplast genome sequences reported in the Araliaceae family, while little is known about the Apiaceae family. In this study, the complete sequence of the B. falcatum chloroplast genome was obtained. The full-length of the cp genome is 155,989 nucleotides with a 37.66% overall guanine-cytosine (GC) content and shows a quadripartite structure composed of three nomenclatural regions: a large single-copy (LSC) region, a small single-copy (SSC) region, and a pair of inverted repeat (IR) regions. The genome occupancy is 85,912-bp, 17,517-bp, and 26,280-bp for LSC, SSC, and IR, respectively. B. falcatum was shown to contain 111 unique genes (78 for protein-coding, 29 for tRNAs, and four for rRNAs, respectively) on its chloroplast genome. Genic comparison found that B. falcatum has no pseudogenes and has two gene losses, accD in the LSC and ycf15 in the IRs. A total of 55 unique tandem repeat sequences were detected in the B. falcatum cp genome. This report is the first to describe the complete chloroplast genome sequence in B. falcatum and will open up further avenues of research to understand the evolutionary panorama and the chloroplast genome conformation in related plant species. Full article
(This article belongs to the Section Molecular Genetics and Genomics)
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Article
Identification and Functional Analysis of Interleukin-1β in the Chinese Soft-Shelled Turtle Pelodiscus sinensis
Genes 2016, 7(5), 18; https://0-doi-org.brum.beds.ac.uk/10.3390/genes7050018 - 04 May 2016
Cited by 6 | Viewed by 2502
Abstract
Chinese soft-shelled turtle (Pelodiscus sinensis) is commercially cultured in East and Southeast Asia for its nutritional and medicinal values. In this study, we identified interleukin-1β (IL-1β) from Chinese soft-shelled turtle. The full-length cDNA of Pelodiscus sinensis IL-1β (tIL-1β) consists of 1529 [...] Read more.
Chinese soft-shelled turtle (Pelodiscus sinensis) is commercially cultured in East and Southeast Asia for its nutritional and medicinal values. In this study, we identified interleukin-1β (IL-1β) from Chinese soft-shelled turtle. The full-length cDNA of Pelodiscus sinensis IL-1β (tIL-1β) consists of 1529 base pairs with an 831-base-pair open reading frame, encoding 277 amino acids. The guanine-cytosine (GC) content in the coding sequence and 3’ untranslated region of tIL-1β is considerably higher than that of other vertebrates. Its mRNA expression level increased significantly during Aeromonas hydrophila infection. The tIL-1β lacks the typical IL-1β-converting enzyme (ICE) cut site found in mammalian IL-1β, but still could be cleaved by turtle caspase-1. By mutating the potential cleavage sites, we identified aspartic acid (Asp/D) 130 as the ICE cut site in tIL-1β. The peptide truncated at D130 was expressed using the baculovirus expression system; its bioactivity is confirmed by the ability to induce cyclooxygenase-2 (COX-2) and tIL-1β itself in peripheral blood monocytes. In conclusion, we characterized IL-1β from Chinese soft-shelled turtle and identified its D130 as a non-typical ICE cut size. Full article
(This article belongs to the Section Molecular Genetics and Genomics)
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Letter
Polymorphisms of the ELANE Gene Promoter Region in End-Stage Chronic Kidney Disease Patients
Genes 2016, 7(5), 17; https://0-doi-org.brum.beds.ac.uk/10.3390/genes7050017 - 29 Apr 2016
Cited by 1 | Viewed by 2092
Abstract
End-stage renal disease (ESRD) patients have a high mortality rate that exceeds that of non-ESRD population. The hemodialysis procedure induces neutrophil activation and elastase release, which might have a role in the inflammatory process and in the development of oxidative stress. The ELANE [...] Read more.
End-stage renal disease (ESRD) patients have a high mortality rate that exceeds that of non-ESRD population. The hemodialysis procedure induces neutrophil activation and elastase release, which might have a role in the inflammatory process and in the development of oxidative stress. The ELANE gene encodes the neutrophil elastase. We analyzed the effect of ELANE promoter region polymorphisms and its relation with the circulating levels of elastase, as well as several clinical, biochemical and inflammatory markers in 123 ESRD patients. We found two duplications in heterozygosity in the promoter region and a new polymorphism, the c.-801G>A. ESRD patients heterozygous for the c.-903T>G polymorphism had no changes in the circulating levels of elastase or other evaluated variables, and those homozygous for the c.-741G>A polymorphism showed significant effects on neutrophils count, as well as in neutrophils/lymphocytes ratio, which might be associated with an increased inflammatory process. Full article
(This article belongs to the Section Human Genomics and Genetic Diseases)
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