Results 41 to 50 of about 2,460 (178)

The enigmatic Placozoa part 2: Exploring evolutionary controversies and promising questions on earth and in space

BioEssays, Volume 43, Issue 10, October 2021., 2021
Placozoans are a versatile model system in many areas of basic and applied research. The genetics of placozoans are well known and placozoans harbor a lot of potential for adapting latest molecular techniques for in vivo manipulation. Not surprising, placozoans have recently been introduced as a new model system also for gravitational biology and ...
Bernd Schierwater, Hans‐Jürgen Osigus, Tjard Bergmann, Neil W. Blackstone, Heike Hadrys, Jens Hauslage, Patrick O. Humbert, Kai Kamm, Marc Kvansakul, Kathrin Wysocki, Rob DeSalle   +10 more
wiley   +1 more source

Placozoan fiber cells: mediators of innate immunity and participants in wound healing

Scientific Reports, 2021
Placozoa is a phylum of non-bilaterian marine animals. These small, flat organisms adhere to the substrate via their densely ciliated ventral epithelium, which mediates mucociliary locomotion and nutrient uptake.
Tatiana D. Mayorova, Katherine Hammar, Jae H. Jung, Maria A. Aronova, Guofeng Zhang, Christine A. Winters, Thomas S. Reese, Carolyn L. Smith   +7 more
doaj   +1 more source

The cell cycle and differentiation as integrated processes: Cyclins and CDKs reciprocally regulate Sox and Notch to balance stem cell maintenance

BioEssays, Volume 43, Issue 7, July 2021., 2021
Development and maintenance of organs requires context‐specific regulation of stem cell activities. We hypothesize that these are dependent upon reciprocal interactions between the cell‐cycle machinery and regulators of stem cell differentiation. To support this, we discuss the mechanistic links between these processes, as well as their parallel ...
Jonas Muhr, Daniel W. Hagey
wiley   +1 more source

Calcisponges have a ParaHox gene and dynamic expression of dispersed NK homeobox genes [PDF]

, 2014
This study was funded by the Sars Centre core budget to M. Adamska. Sequencing was performed at the Norwegian High Throughput Sequencing Centre funded by the Norwegian Research Council. O.M.R. and D.E.K.F.
A Saudemont, B Fahey, B Li, C Larroux, C Larroux, D Chourrout, D Darriba, DEK Ferrier, GN Luke, H-C Seo, J Garcia-Fernàndez, JF Ryan, JHL Hui, JHL Hui, KJ Peterson, M Boetzer, M Srivastava, MG Grabherr, N Takatori, O Mendivil Ramos, R Luo, S Amano, S Anders, S Fortunato, S Leininger, SA Fortunato, TM Keane, Y-F Zhong   +27 more
core   +2 more sources

Identification, distribution and molecular evolution of the pacifastin gene family in Metazoa [PDF]

, 2009
BACKGROUND: Members of the pacifastin family are serine peptidase inhibitors, most of which are produced as multi domain precursor proteins. Structural and biochemical characteristics of insect pacifastin-like peptides have been studied intensively, but ...
Breugelmans, B, Broeck, JV, Simonet, G, van Hoef, V, Van Soest, S   +4 more
core   +2 more sources

Genome-wide analysis of transposable elements and tandem repeats in the compact placozoan genome

Biology Direct, 2010
The placozoan Trichoplax adhaerens has a compact genome with many primitive eumetazoan characteristics. In order to gain a better understanding of its genome architecture, we conducted a detailed analysis of repeat content in this genome.
Meyer Eli, Zhang Lingling, Wang Shi, Bao Zhenmin   +3 more
doaj   +1 more source

Evolution of the perlecan/HSPG2 gene and its activation in regenerating Nematostella vectensis. [PDF]

PLoS ONE, 2015
The heparan sulfate proteoglycan 2 (HSPG2)/perlecan gene is ancient and conserved in all triploblastic species. Its presence maintains critical cell boundaries in tissue and its large (up to ~900 kDa) modular structure has prompted speculation about the ...
Curtis R Warren, Elias Kassir, James Spurlin, Jerahme Martinez, Nicholas H Putnam, Mary C Farach-Carson   +5 more
doaj   +1 more source

RNA interference in marine and freshwater sponges [PDF]

, 2011
Background: The marine sponge Tethya wilhelma and the freshwater sponge Ephydatia muelleri are emerging model organisms to study evolution, gene regulation, development, and physiology in non-bilaterian animal systems. Thus far, functional methods (i.e.,
Cieniewicz, Brandon, Danka, Elizabeth S., Haen, Karri M., Hammel, Jörg U., Hill, April L., Hill, Malcolm S., Knight, Scott W., Lavrov, Dennis V., Nickel, Michael, Posfai, Dora, Rivera, Ajna S., Winters, Ian P., Wörheide, Gert   +12 more
core   +1 more source

Deep RNA sequencing reveals the smallest known mitochondrial micro exon in animals: The placozoan cox1 single base pair exon. [PDF]

PLoS ONE, 2017
The phylum Placozoa holds a key position for our understanding of the evolution of mitochondrial genomes in Metazoa. Placozoans possess large mitochondrial genomes which harbor several remarkable characteristics such as a fragmented cox1 gene and trans ...
Hans-Jürgen Osigus, Michael Eitel, Bernd Schierwater   +2 more
doaj   +1 more source

The phylogenetic position of ctenophores and the origin(s) of nervous systems [PDF]

, 2015
Ctenophores have traditionally been treated as eumetazoans, but some recent whole genome studies have revived the idea that they are, rather, the sister group to all other metazoans.
Jákely, Gáspár, Nielsen, Claus, Paps, Jordi   +2 more
core   +3 more sources