Results 131 to 140 of about 2,257,590 (274)

Bone Marrow Macrophage STING Signaling is a Direct Nexus Linking Marrow Adipose Expansion to NAD+ Depletion and Osteogenic Decline in Skeletal Aging

Advanced Science, EarlyView.
This study reveals that during skeletal aging, bone marrow adipocyte‐derived sDPP4 primes STING signaling in macrophages. In combination with mitochondrial DNA, this signaling activates CD38 and depletes local NAD+/NMN, thereby impairing osteogenesis.
Zhichao Li, Kuanhui Gao, Mengjie Wang, Songlin Liang, Dandan Li, Guoqing Tan, Haipeng Xue, Yujie Liu, Peng Zhang, Zhanwang Xu, Wenxiang Cheng, Yongjun Wang, Nianhu Li   +12 more
wiley   +1 more source

Whitney topology and spaces of preference relations [PDF]

The strong Whitney topology on the sets of maps of smooth manifolds induces a topology on the set of preferences in euclidean space. We prove that the obtained space is not connected which implies that there is no continuous social choice function ...
Oleksandra Hubal, Michael Zarichnyi
core  

Distinct Cleavage Trajectories Mediated by DNA and RNA Substrate in Argonaute From Methanocaldococcus Fervens

Advanced Science, EarlyView.
This study characterizes MfAgo, an enzyme exhibiting highly efficient DNA‐guided DNA and RNA cleavage capability. Precise RNA cleavage strictly requires dimerization to stabilize the PIWI‐loop region, while its robust DNA cleavage functions in a dimerization‐independent manner.
Fuyong Huang, Taiyu Chen, Meng Fang, Qinmiao Duanmu, Kangle Mu, Yuqi Bi, Siwei Xu, Xin Tao, Jiening Wang, Shan Wu   +9 more
wiley   +1 more source

Two type I topoisomerases maintain DNA topology in human mitochondria. [PDF]

Nucleic Acids Res, 2022
Menger KE, Chapman J, Díaz-Maldonado H, Khazeem MM, Deen D, Erdinc D, Casement JW, Di Leo V, Pyle A, Rodríguez-Luis A, Cowell IG, Falkenberg M, Austin CA, Nicholls TJ.   +13 more
europepmc   +1 more source

Chili pepper extracts, capsaicin, and dihydrocapsaicin as potential anticancer agents targeting topoisomerases

BMC Complementary Medicine and Therapies
DNA topoisomerases regulate conformational changes in DNA topology during normal cell growth, such as replication, transcription, recombination, and repair, and may be targeted for anticancer drugs.
Terézia Hudáková, Martina Šemeláková, Peter Očenáš, Mária Kožurková, Kristína Krochtová, Simona Sovová, Zuzana Tóthová, Zuzana Guľášová, Peter Popelka, Peter Solár   +9 more
doaj   +1 more source

Sex‐ and Time‐Resolved Physiological and Gut Ecosystem Responses to a Food‐Grade Microbiome‐Targeted Intervention in Collegiate Endurance Athletes

Advanced Science, EarlyView.
In collegiate endurance athletes, a 6‐week randomized CPYE intervention yielded time‐ and sex‐dependent shifts in field‐based cardiorespiratory, metabolic, and redox indices, accompanied by changes in gut multi‐omics profiles. An exploratory extension during intensified training generates hypotheses warranting future validation.
Meng Zhang, Le Ge, Kaiyang Liu, Yanrong Liu, Guolin Zhao, Lai‐Yu Kwok, Zheng Sun, Zhihong Sun, Wenyi Zhang   +8 more
wiley   +1 more source

Reeling it in: how DNA topology drives loop extrusion by condensin. [PDF]

Nat Struct Mol Biol, 2022
Narducci DN, Hansen AS.
europepmc   +1 more source

H2A.Z-nucleosomes are stabilized by the superhelicity-dependent DNA binding of the C-terminal tail of the histone variant

Nucleus
Using an in situ nucleosome stability assay based on salt extraction, we identified distinct stability features of H2A.Z-containing nucleosomes linked to alternative interactions of the histone variant’s C-terminal tail (Imre et al., Nat. Commun., 2024).
Ibtissem Benhamza, Laszlo Imre, Zutao Yu, Peter Nanasi, Pialy Sen, Kata Nora Enyedi, Katalin Goda, György Vamosi, Gabor Szabo   +8 more
doaj   +1 more source

Mapping Embryonic Mouse Lung Development Using Enhanced Spatial Transcriptomics

Advanced Science, EarlyView.
The mammalian lung contains ∼50 cell types arranged along the airway epithelium. Here, deterministic barcoding sequencing (DBiT‐seq) is optimized to nearly double transcript recovery, enabling highly sensitive spatial mapping of the embryonic mouse lung.
Pengfei Zhang, Benjamin K. Law, Niles Huang, Katharine Goodwin, Celeste M. Nelson, Michelle M. Chan   +5 more
wiley   +1 more source

Polymer Concepts in Cellular Function

Advanced Science, EarlyView.
Miao Yu, Shikha Dhiman, Dorothee Dormann, Frauke Gräter, Katja Luck, Friederike Schmid, Andreas Walther, Edward A. Lemke   +7 more
wiley   +1 more source