Abstract:
:Multicellular tubes consist of polarized cells wrapped around a central lumen and are essential structures underlying many developmental and physiological functions. In Drosophila compound eyes, each ommatidium forms a luminal matrix, the inter-rhabdomeral space, to shape and separate the key phototransduction organelles, the rhabdomeres, for proper visual perception. In an enhancer screen to define mechanisms of retina lumen formation, we identified Actin5C as a key molecule. Our results demonstrate that the disruption of lumen formation upon the reduction of Actin5C is not linked to any discernible defect in microvillus formation, the rhabdomere terminal web (RTW), or the overall morphogenesis and basal extension of the rhabdomere. Second, the failure of proper lumen formation is not the result of previously identified processes of retinal lumen formation: Prominin localization, expansion of the apical membrane, or secretion of the luminal matrix. Rather, the phenotype observed with Actin5C is phenocopied upon the decrease of the individual components of non-muscle myosin II (MyoII) and its upstream activators. In photoreceptor cells MyoII localizes to the base of the rhabdomeres, overlapping with the actin filaments of the RTW. Consistent with the well-established roll of actomyosin-mediated cellular contraction, reduction of MyoII results in reduced distance between apical membranes as measured by a decrease in lumen diameter. Together, our results indicate the actomyosin machinery coordinates with the localization of apical membrane components and the secretion of an extracellular matrix to overcome apical membrane adhesion to initiate and expand the retinal lumen.
journal_name
PLoS Genetjournal_title
PLoS geneticsauthors
Nie J,Mahato S,Zelhof ACdoi
10.1371/journal.pgen.1004608subject
Has Abstractpub_date
2014-09-18 00:00:00pages
e1004608issue
9eissn
1553-7390issn
1553-7404pii
PGENETICS-D-14-00736journal_volume
10pub_type
杂志文章相关文献
PLoS Genetics文献大全abstract::During neurogenesis, transcription factors combinatorially specify neuronal fates and then differentiate subtype identities by inducing subtype-specific gene expression profiles. But how is neuronal subtype identity maintained in mature neurons? Modeling this question in two Drosophila neuronal subtypes (Tv1 and Tv4),...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002501
更新日期:2012-01-01 00:00:00
abstract::Plant stress responses require both protective measures that reduce or restore stress-inflicted damage to cellular structures and mechanisms that efficiently remove damaged and toxic macromolecules, such as misfolded and damaged proteins. We have recently reported that NBR1, the first identified plant autophagy adapto...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004116
更新日期:2014-01-30 00:00:00
abstract::Genome duplications are important evolutionary events that impact the rate and spectrum of beneficial mutations and thus the rate of adaptation. Laboratory evolution experiments initiated with haploid Saccharomyces cerevisiae cultures repeatedly experience whole-genome duplication (WGD). We report recurrent genome dup...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007396
更新日期:2018-05-25 00:00:00
abstract::Arsenic is a well-established human carcinogen of poorly understood mechanism of genotoxicity. It is generally accepted that arsenic acts indirectly by generating oxidative DNA damage that can be converted to replication-dependent DNA double-strand breaks (DSBs), as well as by interfering with DNA repair pathways and ...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003640
更新日期:2013-01-01 00:00:00
abstract::Small heat shock proteins (sHsps) are a conserved class of ATP-independent chaperones that bind to aggregation-prone polypeptides at stress conditions. sHsps encage these polypeptides in assemblies, shielding them from further aggregation. To facilitate their subsequent solubilization and refolding by Hsp70 (DnaK) and...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008479
更新日期:2019-10-25 00:00:00
abstract::The evolution of metazoans from their choanoflagellate-like unicellular ancestor coincided with the acquisition of novel biological functions to support a multicellular lifestyle, and eventually, the unique cellular and physiological demands of differentiated cell types such as those forming the nervous, muscle and im...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003804
更新日期:2013-01-01 00:00:00
abstract::Mitochondrial DNA (mtDNA) encodes proteins essential for ATP production. Mutant variants of the mtDNA polymerase cause mutagenesis that contributes to aging, genetic diseases, and sensitivity to environmental agents. We interrogated mtDNA replication in Saccharomyces cerevisiae strains with disease-associated mutation...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004748
更新日期:2014-10-23 00:00:00
abstract::The length of cilia is controlled by a poorly understood mechanism that involves members of the conserved RCK kinase group, and among them, the LF4/MOK kinases. The multiciliated protist model, Tetrahymena, carries two types of cilia (oral and locomotory) and the length of the locomotory cilia is dependent on their po...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008099
更新日期:2019-07-24 00:00:00
abstract::Ribosomes are the highly complex macromolecular assemblies dedicated to the synthesis of all cellular proteins from mRNA templates. The main principles underlying the making of ribosomes are conserved across eukaryotic organisms and this process has been studied in most detail in the yeast Saccharomyces cerevisiae. Ye...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005565
更新日期:2015-10-08 00:00:00
abstract::Genome-wide association studies (GWAS) have identified over 40 loci that affect risk of coronary artery disease (CAD) and the causal mechanisms at the majority of loci are unknown. Recent studies have suggested that many causal GWAS variants influence disease through altered transcriptional regulation in disease-relev...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005061
更新日期:2015-04-02 00:00:00
abstract::Gap junctions are present in both vertebrates and invertebrates from nematodes to mammals. Although the importance of gap junctions has been documented in many biological processes, the molecular mechanisms underlying gap junction dynamics remain unclear. Here, using the C. elegans PLM neurons as a model, we show that...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005948
更新日期:2016-03-25 00:00:00
abstract::Understanding the medical effect of an ever-growing number of human variants detected is a long term challenge in genetic counseling. Functional assays, based on in vitro or in vivo evaluations of the variant effects, provide essential information, but they require robust statistical validation, as well as adapted out...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1006096
更新日期:2016-06-06 00:00:00
abstract::During the adaptive evolution of a particular trait, some selectively fixed mutations may be directly causative and others may be purely compensatory. The relative contribution of these two classes of mutation to adaptive phenotypic evolution depends on the form and prevalence of mutational pleiotropy. To investigate ...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007331
更新日期:2018-04-02 00:00:00
abstract::Fragile X syndrome (FXS) is a form of inherited mental retardation in humans that results from expansion of a CGG repeat in the Fmr1 gene. Recent studies suggest a role of astrocytes in neuronal development. However, the mechanisms involved in the regulation process of astrocytes from FXS remain unclear. In this study...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003172
更新日期:2012-01-01 00:00:00
abstract::Nephrolithiasis is a common nephrologic disorder with complex etiology. To identify the genetic factor(s) for nephrolithiasis, we conducted a three-stage genome-wide association study (GWAS) using a total of 5,892 nephrolithiasis cases and 17,809 controls of Japanese origin. Here we found three novel loci for nephroli...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002541
更新日期:2012-01-01 00:00:00
abstract::The contribution of MEF2 TFs to the tumorigenic process is still mysterious. Here we clarify that MEF2 can support both pro-oncogenic or tumor suppressive activities depending on the interaction with co-activators or co-repressors partners. Through these interactions MEF2 supervise histone modifications associated wit...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1006752
更新日期:2017-04-18 00:00:00
abstract::The human genome encodes thousands of long noncoding RNA (lncRNA) genes; the function of majority of them is poorly understood. Aberrant expression of a significant number of lncRNAs is observed in various diseases, including cancer. To gain insights into the role of lncRNAs in breast cancer progression, we performed ...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007802
更新日期:2018-11-29 00:00:00
abstract::Mutational fitness effects can be measured with relatively high accuracy in viruses due to their small genome size, which facilitates full-length sequencing and genetic manipulation. Previous work has shown that animal and plant RNA viruses are very sensitive to mutation. Here, we characterize mutational fitness effec...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000742
更新日期:2009-11-01 00:00:00
abstract::Entry into mitosis is triggered by activation of Cdk1 and inactivation of its counteracting phosphatase PP2A/B55. Greatwall kinase inactivates PP2A/B55 via its substrates Ensa and ARPP19. Both Greatwall and Ensa/ARPP19 are regulated by phosphorylation, but the dynamic regulation of Greatwall activity and the phosphata...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004004
更新日期:2014-01-01 00:00:00
abstract::Nrf2, a transcriptional activator of cell protection genes, is an attractive therapeutic target for the prevention of neurodegenerative diseases, including Alzheimer's disease (AD). Current Nrf2 activators, however, may exert toxicity and pathway over-activation can induce detrimental effects. An understanding of the ...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1006593
更新日期:2017-03-02 00:00:00
abstract::Replication forks stall at different DNA obstacles such as those originated by transcription. Fork stalling can lead to DNA double-strand breaks (DSBs) that will be preferentially repaired by homologous recombination when the sister chromatid is available. The Rrm3 helicase is a replisome component that promotes repli...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1006781
更新日期:2017-05-05 00:00:00
abstract::Drosophila melanogaster head development represents a valuable process to study the developmental control of various organs, such as the antennae, the dorsal ocelli and the compound eyes from a common precursor, the eye-antennal imaginal disc. While the gene regulatory network underlying compound eye development has b...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007180
更新日期:2018-01-23 00:00:00
abstract::Cells trigger massive changes in gene expression upon environmental fluctuations. The Hog1 stress-activated protein kinase (SAPK) is an important regulator of the transcriptional activation program that maximizes cell fitness when yeast cells are exposed to osmostress. Besides being associated with transcription facto...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007090
更新日期:2017-11-20 00:00:00
abstract::The C. elegans ortholog of mammalian calsyntenins, CASY-1, is an evolutionarily conserved type-I transmembrane protein that is highly enriched in the nervous system. Mammalian calsyntenins are strongly expressed at inhibitory synapses, but their role in synapse development and function is still elusive. Here, we repor...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007263
更新日期:2018-03-12 00:00:00
abstract::Metabolism, the conversion of nutrients into usable energy and biochemical building blocks, is an essential feature of all cells. The genetic factors responsible for inter-individual metabolic variability remain poorly understood. To investigate genetic causes of metabolome variation, we measured the concentrations of...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004142
更新日期:2014-03-06 00:00:00
abstract::For many decades, Salmonella enterica has been subdivided by serological properties into serovars or further subdivided for epidemiological tracing by a variety of diagnostic tests with higher resolution. Recently, it has been proposed that so-called eBurst groups (eBGs) based on the alleles of seven housekeeping gene...
journal_title:PLoS genetics
pub_type: 杂志文章,评审
doi:10.1371/journal.pgen.1007261
更新日期:2018-04-05 00:00:00
abstract::Massively parallel pyrosequencing of hypervariable regions from small subunit ribosomal RNA (SSU rRNA) genes can sample a microbial community two or three orders of magnitude more deeply per dollar and per hour than capillary sequencing of full-length SSU rRNA. As with full-length rRNA surveys, each sequence read is a...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000255
更新日期:2008-11-01 00:00:00
abstract::The phenotypic outcome of a mutation cannot be simply mapped onto the underlying DNA variant. Instead, the phenotype is a function of the allele, the genetic background in which it occurs and the environment where the mutational effects are expressed. While the influence of genetic background on the expressivity of in...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003661
更新日期:2013-01-01 00:00:00
abstract::Recent studies of the HapMap lymphoblastoid cell lines have identified large numbers of quantitative trait loci for gene expression (eQTLs). Reanalyzing these data using a novel Bayesian hierarchical model, we were able to create a surprisingly high-resolution map of the typical locations of sites that affect mRNA lev...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000214
更新日期:2008-10-01 00:00:00
abstract::Controlling infectious disease without inducing unwanted inflammatory disease requires proper regulation of the innate immune response. Thus, innate immunity needs to be activated when needed during an infection, but must be limited to prevent damage. To accomplish this, negative regulators of innate immunity limit th...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003855
更新日期:2013-10-01 00:00:00