Results 51 to 60 of about 7,362,319 (231)

RNA Synthesis in the Tracheal Epithelial Cells of Aging Mice as Revealed by Electron Microscopic Radioautography [PDF]

, 2011
For the purpose of studying the aging changes of macromolecular synthesis in the tracheal epithelial cells of experimental animals, we studied 10 groups of aging mice during development and aging from fetal day 19 to postnatal month 24.
Tetsuji Nagata , Int J Cur Sci Res
core  

Multiple feedback loops through cytokinin signaling control stem cell number within the Arabidopsis shoot meristem [PDF]

, 2009
A central unanswered question in stem cell biology, both in plants and in animals, is how the spatial organization of stem cell niches are maintained as cells move through them.
Anders, Birnbaum, Brand, C. Ohno, Clark, Clark, Clark, Clark, E. M. Meyerowitz, Fletcher, Fletcher, Gallois, Gallois, Geier, Gordon, Haecker, Jasinski, Jonsson, Kayes, Kurakawa, Laux, Leibfried, Long, Mahonen, Mayer, Muller, Muller, S. P. Gordon, Sablowski, Schoof, Skoog, Tucker, V. S. Chickarmane, Yanai   +33 more
core   +2 more sources

The Saccharomyces cerevisiae amino acid transporter Lyp1 has a broad substrate spectrum

FEBS Letters, EarlyView.
In Saccharomyces cerevisiae, Yeast Amino acid Transporter family members mediate the import of amino acids, ranging from substrate specialists to generalists. Here, we show that the specialist transporter, Lyp1, has a broader substrate spectrum than previously described, with affinity constants spanning from micromolar to millimolar.
Foteini Karapanagioti, Sebastian Obermaier, Dirk J. Slotboom, Bert Poolman   +3 more
wiley   +1 more source

Particle-in-cell simulations of particle energization from low Mach number fast mode shocks

, 2012
Astrophysical shocks are often studied in the high Mach number limit but weakly compressive fast shocks can occur in magnetic reconnection outflows and are considered to be a site of particle energization in solar flares.
Blackman, Eric G., Park, Jaehong, Ren, Chuang, Siller, Robert, Workman, Jared C.   +4 more
core   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

FEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

Social context prevents heat hormetic effects against mutagens during fish development

FEBS Letters, EarlyView.
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere, Claudio Silva De Freitas, Adam Bates, Kenneth B. Storey, Pedro Beltran‐Alvarez, Katharina C. Wollenberg Valero   +5 more
wiley   +1 more source

miRNA‐29 regulates epidermal and mesenchymal functions in skin repair

FEBS Letters, EarlyView.
miRNA‐29 inhibits cell‐to‐cell and cell‐to‐matrix adhesion by silencing mRNA targets. Adhesion is controlled by complex interactions between many types of molecules coded by mRNAs. This is crucial for keeping together the layers of the skin and for regenerating the skin after wounding.
Lalitha Thiagarajan, Rosa Sanchez‐Alvarez, Chiho Kambara, Poojitha Rajasekar, Yuluang Wang, François Halloy, Jonathan Hall, Hans‐Jürgen Stark, Iris Martin, Petra Boukamp, Svitlana Kurinna   +10 more
wiley   +1 more source

(Tissue) P Systems with Anti-Membranes [PDF]

, 2019
The concept of a matter object being annihilated when meeting its corresponding anti-matter object is taken over for membranes as objects and anti-membranes as the corresponding annihilation counterpart in P systems. Natural numbers can be represented
Alhazov, Artiom, Freund, Rudolf, Ivanov, Sergiu, Research Group on Natural Computing (Coordinador)   +3 more
core  

Spot‐14 and its paralog Spot‐14R regulate expression of metabolic and thermogenic pathway genes in murine brown and beige adipocytes

FEBS Letters, EarlyView.
Spot‐14 and Spot‐14R play distinct roles in regulating metabolism in brown and beige adipocytes. While both influence lipid and glucose pathways, Spot‐14 uniquely controls thermogenic gene expression. This dual regulation balances energy storage and heat production, highlighting potential therapeutic targets for obesity and metabolic disorders. Spot 14
Lidia Itzel Castro‐Rodríguez, Cristina Velez‐delValle, Claudia Patricia Hernández‐Mosqueira, Walid Kuri‐Harcuch   +3 more
wiley   +1 more source

Blood cells expand their numbers

The Journal of Cell Biology, 2002
Scientists in the field of blood cell development have found a protein of expansive abilities. According to two new papers, HoxB4 is able to promote self-renewal of hematopoietic stem cells (HSCs) both in vivo and in vitro. Figure HSCs expressing HoxB4 (triangles) increase in number.
openaire   +3 more sources