Results 61 to 70 of about 292,639 (308)

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

Simultaneity and generalized connections in general relativity

, 2003
Stationary extended frames in general relativity are considered. The requirement of stationarity allows to treat the spacetime as a principal fiber bundle over the one-dimensional group of time translations. Over this bundle a connection form establishes
Abramowicz M A, Anandan J, Anderson S J R, Ashtekar A, Coisson R, E Minguzzi, Ellis G F R, Grøn Ø, Gödel K, Hawking S W, Klauber R, Kobayashi S, Landau L D, Malament D, Mangiarotti L, Michor P W, Minguzzi E, Minguzzi E, Märzke R F, Møller C, Poincaré H, Poincaré H, Robb A A, Sagnac M G, Sagnac M G, Sakurai J J, Semon M D, Stedman G E, Steenrod N, Strauss M, Weber T A, Will C M, Wu T T   +32 more
core   +1 more source

Functoriality of Principal Bundles and Connections

, 2019
Perhaps the most important contribution of gauge theory to general mathematics is to point out the importance of association functors. Emphasizing category theory we characterize association functors by two of their natural properties and use this characterization to establish an equivalence between the category of principal bundles and a suitably ...
Moncada, Gustavo Amilcar Saldaña, Weingart, Gregor   +1 more
openaire   +2 more sources

Decoding the dual role of autophagy in cancer through transcriptional and epigenetic regulation

FEBS Letters, EarlyView.
Transcriptional and epigenetic regulation controls autophagy, which exerts context‐dependent effects on cancer: Autophagy suppresses tumorigenesis by maintaining cellular homeostasis or promotes tumor progression by supporting survival under stress. In this “In a Nutshell” article, we explore the intricate mechanisms of the dual function of autophagy ...
Young Suk Yu, Ik Soo Kim, Sung Hee Baek
wiley   +1 more source

About differential equations of the curvature tensors of a fundamental group and affine connections

Дифференциальная геометрия многообразий фигур, 2019
The principal bundle is considered, the base of which is an n-dimen­sional smooth manifold, and the typical fiber is an r-fold Lie group. Struc­ture equations for the forms of the fundamental group and affine connec­tions are given, each of which ...
N. Ryazanov
doaj   +1 more source

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

FEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro, Marco Cellani, Cristina Scielzo   +2 more
wiley   +1 more source

On semistable principal bundles over a complex projective manifold, II

, 2008
Let (X, \omega) be a compact connected Kaehler manifold of complex dimension d and E_G a holomorphic principal G-bundle on X, where G is a connected reductive linear algebraic group defined over C. Let Z (G) denote the center of G.
A. Ramanathan, A. Ramanathan, B. Anchouche, C.T. Simpson, F.A. Bogomolov, G.D. Mostow, I. Biswas, Indranil Biswas, J.-P. Demailly, K. Uhlenbeck, M.F. Atiyah, S. Ramanan, S.K. Donaldson, Ugo Bruzzo   +13 more
core   +2 more sources

Evolutionary interplay between viruses and R‐loops

FEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi, Zita Képes, Zoltán Szabó, Eszter Csoma, Lóránt Székvölgyi   +4 more
wiley   +1 more source

On 2-Holonomy

, 2012
We construct a cycle in higher Hochschild homology associated to the 2-dimensional torus which represents 2-holonomy of a non-abelian gerbe in the same way the ordinary holonomy of a principal G-bundle gives rise to a cycle in ordinary Hochschild ...
Baez, Breen, Cuntz, FRIEDRICH WAGEMANN, Giraud, HOSSEIN ABBASPOUR, Loday, Loday, Neeb, Roytenberg, Schreiber, Stasheff   +11 more
core   +1 more source

Flow‐based immunomagnetic enrichment of circulating tumor cells from diagnostic leukapheresis product

Molecular Oncology, EarlyView.
The number of circulating tumor cells obtained from prostate cancer patients was increased approximately 5‐fold compared to regular CellSearch when processing 2 mL diagnostic leukapheresis material aliquots and increased by 44‐fold when processing 20 mL DLA aliquots using the flow enrichment target capture Halbach‐array.
Michiel Stevens, Anouk Mentink, Frank A. W. Coumans, Eshwari Dathathri, Khrystany T. Isebia, Jaco Kraan, Ronald de Wit, John W. M. Martens, Leon W. M. M. Terstappen   +8 more
wiley   +1 more source