Results 91 to 100 of about 238,540 (308)

Tailoring Vascular‐Immune Homeostasis via Manganese‐DNA Complex‐Armed Immunogenic Extracellular Vesicles for Pancreatic Cancer Immunotherapy

Advanced Science, EarlyView.
This study demonstrates that Mn2⁺–tumor DNA complexes encapsulated in dendritic cell (DC)– derived immunogenic extracellular vesicles (EVDC@Mn‐DNA) act as a DC‐specific cGAS– STING activator. EVDC@Mn‐DNA treatment enhances intratumoral DC activation, improves tumor vascular function, promotes CD8⁺ T cell activity, and suppresses pancreatic tumor growth,
Xue Jiang, Lihuan Shang, Xiaochun Chen, Xiangzhan Kong, Xiaojuan Wang, Linjia Jiang, Huiying Zhao, Yafeng Zhu, Cheng Huang, Shiyi Deng, Rui Zhang, Minghui Wang, Haoming Lin, Ping‐Pui Wong   +13 more
wiley   +1 more source

Control of Nucleotide Metabolism and Ribosomal Ribonucleic Acid Synthesis During Nitrogen Starvation of \u3cem\u3eEscherichia coli\u3c/em\u3e [PDF]

, 1972
Ribosomal ribonucleic acid (RNA) synthesis and ribonucleoside triphosphate metabolism were studied in cultures of Escherichia coli subjected to starvation for inorganic nitrogen.
Irr, Joseph D.
core   +1 more source

Efficient production of guanosine in Escherichia coli by combinatorial metabolic engineering

Microbial Cell Factories
Background Guanosine is a purine nucleoside that is widely used as a raw material for food additives and pharmaceutical products. Microbial fermentation is the main production method of guanosine. However, the guanosine-producing strains possess multiple
Kun Zhang, Mengxing Qin, Yu Hou, Wenwen Zhang, Zhenyu Wang, Hailei Wang   +5 more
doaj   +1 more source

A Cold Stress‐Activated Endocrine Sentinel Chemical Hormone Promotes Insect Survival via Mitochondrial Adaptations Through the Adipokinetic Hormone Receptor

Advanced Science, EarlyView.
Seasonal cold adaptation is vital for insect survival, yet the molecular mechanisms linking diapause to mitochondrial resilience remain largely unresolved. We identify ascaroside C9 (asc‐C9) as a key endocrine signal that enhances diapause survival during cold stress by activating the AKHR–PGC1α–UCP4 axis, thereby driving cold‐induced lipolysis and ...
Jiao Zhou, Junxian Chen, Hongxia Zhang, Lu Guo, Kevin Mai, Elijah Abraham, Dilip V. Prajapati, Yue Chang, Jing Ning, Xinchen Wang, Defeng Li, Dan‐Dan Zhang, Jianghua Sun, Rebecca A. Butcher, Lilin Zhao   +14 more
wiley   +1 more source

Dinucleoside polyphosphates : newly detected uraemic compounds with an impact on leucocyte oxidative burst [PDF]

, 2009
Background. Dinucleoside polyphosphates (NpnN) have pathophysiologic roles in cardiovascular disease and are newly detected uraemic retention solutes. They were retrieved in human plasma, tissues and cells.
Dhondt, Annemieke, Glorieux, Griet, Jankowski, Joachim, Jankowski, Vera, Schepers, Eva, Vanholder, Raymond   +5 more
core   +1 more source

A Purine Nucleotide Biosynthesis Enzyme Guanosine Monophosphate Reductase Is a Suppressor of Melanoma Invasion

Cell Reports, 2013
Melanoma is one of the most aggressive types of human cancers, and the mechanisms underlying melanoma invasive phenotype are not completely understood. Here, we report that expression of guanosine monophosphate reductase (GMPR), an enzyme involved in de ...
Joseph A. Wawrzyniak, Anna Bianchi-Smiraglia, Wiam Bshara, Sudha Mannava, Jeff Ackroyd, Archis Bagati, Angela R. Omilian, Michael Im, Natalia Fedtsova, Jeffrey C. Miecznikowski, Kalyana C. Moparthy, Shoshanna N. Zucker, Qianqian Zhu, Nadezhda I. Kozlova, Albert E. Berman, Keith S. Hoek, Andrei V. Gudkov, Donna S. Shewach, Carl D. Morrison, Mikhail A. Nikiforov   +19 more
doaj   +1 more source

Temporal Transcriptional Regulation of Human Neuronal Differentiation via Forward Programming

Advanced Science, EarlyView.
Single‐cell profiling of TF‐induced forward programming versus stepwise dual‐SMAD differentiation reveals that divergent trajectories set the pace of neurogenesis. OLIG TFs advance cell‐cycle exit via NOTCH modulation, while NEUROD2 later accelerates maturation. The study elucidates transcriptional mechanisms governing differentiation timing, providing
Lingling Zhu, Weiguang Wang, Jian Zhang, Lei Liu, Minpeng Huang, Lei Diao, Shuang Feng, Qiong Yang, Hao Qiu, Bing Pan, Renee A Reijo Pera, Ji Liu, Ninuo Xia, Fang Fang   +13 more
wiley   +1 more source

Versatile enzymatic system for the production of guanosine polyphosphates [PDF]

, 2010
Posters - ED02 Signalling and systems biology: abstract no. ED02/20During periods of environmental stress, bacteria synthesize guanosine tetraphosphate (ppGpp, magic spot I) and guanosine pentaphosphate (pppGpp, magic spot II) in a process known as the ...
Choi, MMY, Wang, Y, Watt, RM
core  

Liquid chromatographic method for extracellular Guanosine 5′-triphosphate and tetrahydrobiopterin pathway products analysis from cadaveric samples and human biofluids

Journal of Chromatography Open
To gain a deep insight and to obtain a superior understanding about guanosine-based pathway, this paper reports an innovative approach to study this critical subject.
M. Perrucci, C. Santangelo, D. Bondi, T. Pietrangelo, F. Savini, A.M. Catena, M. Bonelli, M. Locatelli, C. D'Ovidio   +8 more
doaj   +1 more source

ppGpp Controls Global Gene Expression in Light and in Darkness in S. elongatus

Cell Reports, 2017
The bacterial and plant stringent response involves production of the signaling molecules guanosine tetraphosphate and guanosine pentaphosphate ((p)ppGpp), leading to global reorganization of gene expression.
Anna M. Puszynska, Erin K. O’Shea
doaj   +1 more source