Results 81 to 90 of about 30,853 (255)

Scalar field as a null dust

European Physical Journal C: Particles and Fields, 2019
We show that a canonical, minimally coupled scalar field which is non-self interacting and massless is equivalent to a null dust fluid (whether it is a test or a gravitating field), in a spacetime region in which its gradient is null.
Valerio Faraoni, Jeremy Côté
doaj   +1 more source

ABHD17C‐Mediated S‐Depalmitoylation of BCL6B Enhances CD24 Transcription to Resist Macrophage Phagocytosis in Pancreatic Cancer

Advanced Science, EarlyView.
ABHD17C‐mediated depalmitoylation of BCL6B at Cys442 blocks its nuclear import and triggers ubiquitin‐dependent degradation, attenuating transcriptional repression of the anti‐phagocytic signal CD24. This mechanism enables pancreatic cancer cells to evade macrophage phagocytosis and fosters an immunosuppressive microenvironment.
Yalu Zhang, Di Cui, Fanzheng Meng, Xu Zhu, Liang Zhu, Liang Wu, Haifeng Hu, Jizhou Wang, Hanhui Yao, Lianxin Liu   +9 more
wiley   +1 more source

Bandgap‐Engineered PtxTey:Ag2Te Composite Quantum Dots Enable Programmable NIR‐II Imaging and Photothermal‐Immune Synergistic Therapy

Advanced Science, EarlyView.
A bandgap‐engineered PtxTey:Ag2Te quantum dot platform enables tunable NIR‐IIb emission for deep‐tissue imaging and mild photothermal therapy. Conjugation with αPD‐L1 confers dual tumor targeting and real‐time monitoring of PD‐L1 dynamics. Mild photothermal modulation induces immune reprogramming, enhancing checkpoint blockade efficacy and achieving ...
Jing Liu, Rui Xu, Quan Wu, Tian‐Xin Xiao, Lai‐Xi Zhao, Lei Sun, Ya‐Wen Zheng, Liang Dong, Zhi‐Quan Tian, Haibo Wang   +9 more
wiley   +1 more source

AIF1+CSF1R+ MSCs, induced by TNF‐α, act to generate an inflammatory microenvironment and promote hepatocarcinogenesis

Hepatology, EarlyView., 2022
Mesenchymal stem cells subset, educated by TNF‐α, are involved to generate inflammatory microenvironment and promote hepatocarcinogenesis Abstract Background and Aims Increasing evidence suggests that mesenchymal stem cells (MSCs) home to injured local tissues and the tumor microenvironment in the liver.
Chen Zong, Yan Meng, Fei Ye, Xue Yang, Rong Li, Jinghua Jiang, Qiudong Zhao, Lu Gao, Zhipeng Han, Lixin Wei   +9 more
wiley   +1 more source

Null-Killing vector dimensional reduction and Galilean geometrodynamics [PDF]

, 1995
The solutions of Einstein's equations admitting one non-null Killing vector field are best studied with the projection formalism of Geroch. When the Killing vector is lightlike, the projection onto the orbit space still exists and one expects a covariant
Julia, B., Nicolai, H.
core   +2 more sources

Mitochondrial Carrier SLC25A13 Drives Ferroptosis Resistance and Immune Evasion via a STAT3–IFI6 Circuit in Breast Cancer

Advanced Science, EarlyView.
SLC25A13 is identified as an immunometabolic driver of triple‐negative breast cancer that sustains ferroptosis resistance and immune evasion through a STAT3–IFI6 circuit. Pharmacologic degradation of SLC25A13 restores ferroptosis sensitivity and enhances anti‐PD‐1 efficacy, highlighting a strategy to convert immune‐cold tumors into immunotherapy ...
Yingze Zhu, Yuhan Tang, Yingcui Chen, Zhuoqi Zhang, Yige Lu, Xinyue Wang, Qiyuan Shi, Wenhui Zhao, Hui Pang   +8 more
wiley   +1 more source

Simplified Models of Vector Control Impact upon Malaria Transmission by Zoophagic Mosquitoes. [PDF]

, 2012
BACKGROUND\ud \ud High coverage of personal protection measures that kill mosquitoes dramatically reduce malaria transmission where vector populations depend upon human blood.
Devine, Gregor J, Moore, S. J., Moore Sarah J., Chitnis, Nakul, Moore, Sarah J., Merrill, Stephen, Nakul Chitnis, Majambere, S., Gregor J Devine, Killeen, Gerry, Kiware, Samson S, Killeen, Gerry F, Killeen, G. F., Sarah J Moore, Kiware, Samson S., Chitnis Nakul, Devine, Gregor J., Merrill, S., Moore, Sarah J, Stephen Merrill, Gerry F Killeen, Devine, G. J., Merrill Stephen, Silas Majambere, Majambere Silas, Devine Gregor J., Chitnis, N., Kiware Samson S., Killeen, Gerry F., Killeen Gerry F., Kiware, S. S., Samson S Kiware, Majambere, Silas   +32 more
core   +1 more source

CEBPG‐Mediated Palmitic Acid Adaptation of Cancer‐Associated Fibroblasts Drives Metastasis of Oral Squamous Cell Carcinoma

Advanced Science, EarlyView.
This study reveals a metabolic signaling axis in the OSCC microenvironment where palmitic acid (PA) drives the activation of CAFs. PA uptake triggers CEBPG‐dependent epigenetic remodeling to upregulate ERN1 and TMBIM6, thereby mitigating ER stress. This adaptive program sustains CAF survival and the pro‐metastatic phenotype, establishing this pathway ...
Yiling Duan, Yitong Li, Yufei Wu, Xiao Yang, Rui Li, Hui Zhao, Zhengjun Shang   +6 more
wiley   +1 more source

A necessary and sufficient condition for a vector field to be Killing [PDF]

, 1979
Lynge (see (4)), proved that X vector field on a compact and connected manifold M, is Killing in a Riemannian metric g, if and only if there exist k complete vector fields X1 , ... , Xk; such that: 1) The fl.ows of the Xi are a11 periodic, 2) [X;, X;]
Currás Bosch, Carlos
core  

Unit Killing Vector Fields on Nearly Kähler Manifolds [PDF]

, 2005
International audienceWe study $6$-dimensional nearly Kähler manifolds admitting a Killing vector field of unit length. In the compact case it is shown that up to a finite cover there is only one geometry possible, that of the $3$--symmetric space $S^3 ...
Moroianu, Andrei, PAUL-ANDI NAGY, Semmelmann, Uwe, UWE SEMMELMANN, ANDREI MOROIANU, Nagy, Paul-Andi   +5 more
core   +1 more source