The levels of cyclic AMP and cyclic GMP during the second cleavage cycle of eggs of Mactra solidissima have been measured. Cyclic GMP levels vary reciprocally with cyclic AMP levels, the cyclic GMP level increasing up to 4 to 5-fold and the cyclic AMP level falling to 50 percent at the onset of mitosis.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/0309-1651(77)90075-3 | DOI Listing |
Autoimmunity
December 2025
Department of Thyroid Head and Neck Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China.
Background: Exosomes derived from cancer-associated fibroblasts (CAFs) can affect tumor microenvironment (TME) of thyroid cancer (TC). The cAMP response element binding protein 1 (CREB1) acts as a transcription factor to participate in cancer development. Currently, we aimed to explore the molecular mechanism of exosome-associated CREB1 and C-C motif chemokine ligand 20 (CCL20) in TC.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA.
The cystic fibrosis transmembrane conductance regulator (CFTR) is an anion channel that is dysfunctional in individuals with cystic fibrosis (CF). The permeability of CFTR can be experimentally manipulated though different mechanisms, including activation via inducing the phosphorylation of residues in the regulatory domain as well as altering the gating/open probability of the channel. Phosphorylation/activation of the channel is achieved by exposure to compounds that increase intracellular cAMP, with forskolin and IBMX commonly used for this purpose.
View Article and Find Full Text PDFBiomolecules
December 2024
Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
Gut peptides, including glucagon-like peptide-1 (GLP-1), regulate metabolic homeostasis and have emerged as the basis for multiple state-of-the-art diabetes and obesity therapies. We previously showed that G protein-coupled receptor 17 (GPR17) is expressed in intestinal enteroendocrine cells (EECs) and modulates nutrient-induced GLP-1 secretion. However, the GPR17-mediated molecular signaling pathways in EECs have yet to be fully deciphered.
View Article and Find Full Text PDFAntioxidants (Basel)
January 2025
Korean Medicine Application Center, Korea Institute of Oriental Medicine, Daegu 41062, Republic of Korea.
To combat influenza A virus (IAV) infection, it is vital to develop effective therapeutic strategies, including immunomodulators. In this study, we examined the antiviral effects of Hovenia dulcis Thunb. honey (HDH) against IAV using RAW 264.
View Article and Find Full Text PDFCell
January 2025
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 7610001, Israel. Electronic address:
Viruses encode proteins that inhibit host defenses, but sifting through the millions of available viral sequences for immune-modulatory proteins has been so far impractical. Here, we develop a process to systematically screen virus-encoded proteins for inhibitors that physically bind host immune proteins. Focusing on Thoeris and CBASS, bacterial defense systems that are the ancestors of eukaryotic Toll/interleukin-1 receptor (TIR) and cyclic GMP-AMP synthase (cGAS) immunity, we discover seven families of Thoeris and CBASS inhibitors, encompassing thousands of genes widespread in phages.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!