Results 61 to 70 of about 42,926,125 (284)

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

FEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg, Martine Hjeltnes, Josephine Krieger, Joshua E. Elias, Maria Stensland, Kristian Holm, Xiaojun Jiang, Chuki Khangsar, Tuula A. Nyman, Arthur Kaser, Johannes R. Hov, Tom H. Karlsen, Nicole C. Kaneider, Frode L. Jahnsen, Georg Schneditz   +14 more
wiley   +1 more source

Progesterone sulfates are enterohepatically recycled and stimulate G protein-coupled bile acid receptor 1-mediated gut hormone release [PDF]

American Journal of Physiology-Gastrointestinal and Liver Physiology
Sulfated progesterone species (PMxSs) increase postprandially in women with intrahepatic cholestasis of pregnancy (ICP) but not in women with uncomplicated pregnancy. PMxS can be enterohepatically recycled via active transport from the gut lumen by apical sodium-dependent bile acid transporter (ASBT) and stimulate gut hormone secretion.
Alice L. Mitchell, Iain R. Tough, Hei Man Fan, Anita Lövgren-Sandblom, Caroline Ovadia, Jenny Chambers, Patricia Fonseca Pedro, Anastasia Tsakmaki, Gavin A. Bewick, Hanns-Ulrich Marschall, Helen M. Cox, Catherine Williamson   +11 more
openaire   +2 more sources

The ocular albinism type 1 protein, an intracellular G protein-coupled receptor, regulates melanosome transport in pigment cells [PDF]

, 2008
The protein product of the ocular albinism type 1 gene, named OA1, is a pigment cell-specific G protein-coupled receptor exclusively localized to intracellular organelles, namely lysosomes and melanosomes.
Bennett, DC, Venturi C, Palmigiano, A, Schiaffino, MV, Piccirillo, R, Altimare D., Rotondo G., Tacchetti, C, Marigo, V, Bagnato P., Coppola M., Rotondo, G, Venturi, C, Sviderskaya, EV, Palmisano I., Palmigiano A., Altimare D, Bagnato, P, Marigo V., Surace, EM, Altimare, D, Tacchetti C, Innamorati G., Venturi C., Surace E. M., Palmisano I, Rotondo G, INNAMORATI, Giulio, BALLABIO, ANDREA, Schiaffino M. V., Sviderskaya E. V., Palmigiano A, Innamorati G, SURACE, Enrico Maria, Sviderskaya EV, Piccirillo R, Bagnato P, Ballabio A., Incerti B, Piccirillo R., Tacchetti C., Schiaffino MV, Coppola, M, Incerti, B, Bennett DC, Incerti B., Palmisano, I, Coppola M, Bennett D. C., Innamorati, G, Ballabio, A, Marigo V   +51 more
core   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Release of GLP-1 and PYY in response to the activation of G protein-coupled bile acid receptor TGR5 is mediated by Epac/PLC-ε pathway and modulated by endogenous H2S [PDF]

Frontiers in Physiology, 2014
Activation of plasma membrane TGR5 receptors in enteroendocrine cells by bile acids is known to regulate gastrointestinal secretion and motility and glucose homeostasis. The endocrine functions of the gut are modulated by microenvironment of the distal gut predominantly by sulfur-reducing bacteria of the microbiota that produce H2S.
Bala, Vanitha, Rajagopal, Senthilkumar, Kumar, Divya P., Nalli, Ancy D., Mahavadi, Sunila, Sanyal, Arun J., Grider, John R., Murthy, Karnam S.   +7 more
openaire   +3 more sources

G protein-coupled receptor kinase 2-mediated phosphorylation of ezrin is required for G protein-coupled receptor-dependent reorganization of the actin cytoskeleton [PDF]

, 2005
G protein-coupled receptor kinase 2 (GRK2) phosphorylates and desensitizes activated G protein-coupled receptors (GPCRs). Here, we identify ezrin as a novel non-GPCR substrate of GRK2. GRK2 phosphorylates glutathione S-transferase (GST)-ezrin, but not an
Pitcher, JA, Cant, SH
core  

Heterodimerization of apelin receptor and neurotensin receptor 1 induces phosphorylation of ERK1/2and cell proliferationviaGαq-mediated mechanism [PDF]

, 2014
Dimerization of G protein-coupled receptors (GPCRs) is crucial for receptor function including agonist affinity, efficacy, trafficking and specificity of signal transduction, including G protein coupling.
Cai, X, Jiang, Y, Karteris, E, Bai, B, Chen, J, Karteris, Emmanouil, Bai, Bo, Jiang, Yunlu, Cai, Xin, Chen, Jing   +9 more
core   +1 more source

Metastatic niche shaped by host factors influences disseminated cancer cell fate

FEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward, Álvaro Ruiz‐Tabas, Patricia Altea‐Manzano   +2 more
wiley   +1 more source

Bile acids affect intestinal barrier function through FXR and TGR5

Frontiers in Medicine
Bile acids play a dual role by aiding lipid absorption and acting as signaling molecules by interacting with various receptors. Bile acids are perpetually recycled via enterohepatic circulation and are biotransformation by gut microbiota, making bile ...
Guangyao Song, Yuxiao Xie, Yuxiao Xie, Lanlan Yi, Wenjie Cheng, Huijin Jia, Wenzhe Shi, Qiwei Liu, Ligui Fang, Shiqi Xue, Dan Liu, Junhong Zhu, Sumei Zhao   +12 more
doaj   +1 more source