Results 51 to 60 of about 77,896 (237)

The Development of Polyamines throughout Brassica rapa over its Lifecycle [PDF]

, 2014
Polyamines are naturally produced chemicals in plants involved in growth, development and stress response. The primary objective of my study is to create a profile of changes in the entire life of the plant, in every organ at all stages of development ...
Larsen, Jon, Minocha, Subhash C, Sullivan, Matthew Ryan   +2 more
core   +1 more source

Expanding Chemical Space of Nucleic Acid Nanoparticles for Tunable Antiviral‐Like Immunomodulatory Responses and Potent Adjuvant Activity

Advanced Functional Materials, EarlyView.
We introduce a nucleic acid nanoparticle (NANP) platform designed to be rrecognized by the human innate immune system in a regulated manner. By changing chemical composition while maintaining constant architectural parameters, we identify key determinants of immunorecognition enabling the rational design of NANPs with tunable immune activation profiles
Martin Panigaj, Hannah S. Newton, Jian Wang, Laxmi Pandey, Yelixza I. Avilla, Phong Nguyen, Morgan Chandler, Justin Halman, Yasmine Radwan, Stephanie Smith, Elijah Edmondson, Simone Difilippantonio, Chelsea Sanders, Bao Tran, Yongmei Zhao, Shaojun Xie, Edward Cedrone, Barry W. Neun, Meni Wanunu, Nikolay V. Dokholyan, Marina A. Dobrovolskaia, Kirill A. Afonin   +21 more
wiley   +1 more source

Growth regulatory effects of cyclic AMP and polyamine depletion are dissociable in cultured mouse lymphoma cells. [PDF]

, 1983
Treatment of mouse lymphoma S49 cells with D,L-alpha-difluoromethylornithine (DFMO), an inhibitor of ornithine decarboxylase, depleted cellular polyamine levels and stopped cell growth. The cells were arrested predominantly in G1.
Coffino, P, Marton, LJ, McConlogue, LC
core  

Abrupt Transition from a Free, Repulsive to a Condensed, Attractive DNA Phase, Induced by Multivalent Polyamine Cations

, 2008
We have investigated the energetics of DNA condensation by multivalent polyamine cations. Solution small angle x-ray scattering was used to monitor interactions between short 25 base pair dsDNA strands in the free supernatant DNA phase that coexists with
Andresen, Kurt, Kwok, Lisa W., Lamb, Jessica S., Pollack, Lois, Qiu, Xiangyun   +4 more
core   +1 more source

External and internal triggers of cell death in yeast [PDF]

, 2016
In recent years, yeast was confirmed as a useful eukaryotic model system to decipher the complex mechanisms and networks occurring in higher eukaryotes, particularly in mammalian cells, in physiological as well in pathological conditions.
FALCONE, Claudio, MAZZONI, Cristina
core   +2 more sources

Microglial Fkbp5 Impairs Post‐Stroke Vascular Integrity and Regeneration by Promoting Yap1‐Mediated Glycolysis and Oxidative Phosphorylation

Advanced Science, EarlyView.
A post‐stroke perivascular niche of microglia characterized by low expression of M2 markers and elevated glycolysis, oxidative phosphorylation (OXPHOS), and phagocytic activity is identified, which is termed stroke‐activated vascular‐associated microglia (stroke‐VAM).
Yanan Li, Yanmei Qiu, Yunlei Yang, Yanhao Wei, Haokun Peng, Longhai Zeng, Pengcheng Li, Rentang Bi, Bo Hu   +8 more
wiley   +1 more source

Effect of exogenous spermidine on expression profile of reproductive hormone receptors in mouse ovaries

浙江大学学报. 农业与生命科学版, 2017
The polyamines spermidine and spermine and their precursor putrescine are a class of compounds containing two or more amino groups and participate in the regulation of various physiological and pathological processes by interacting with negatively ...
LONG Shiyun, JIANG Dongmei, CHEN Ziyu, GUAN Cheng, YI Zhixin, KANG Bo   +5 more
doaj   +1 more source

Spermidine Suppresses Development of Experimental Abdominal Aortic Aneurysms

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2020
Background The protective effects of polyamines on cardiovascular disease have been demonstrated in many studies. However, the roles of spermidine, a natural polyamine, in abdominal aortic aneurysm (AAA) disease have not been studied.
Shuai Liu, Tingting Huang, Rui Liu, Huoying Cai, Baihong Pan, Mingmei Liao, Pu Yang, Lei Wang, Jianhua Huang, Yingbin Ge, Baohui Xu, Wei Wang   +11 more
doaj   +1 more source

Efferocytosis‐Driven Polyamine Metabolism in Macrophages Enhances Cancer Stem Cell Enrichment after Chemotherapy in Ovarian Cancer

Advanced Science, EarlyView.
Chemotherapy‐induced efferocytosis drives ovarian cancer stem cell enrichment. By engulfing apoptotic cancer cells, macrophages upregulate ODC1 and produce putrescine, which elevates osteopontin (OPN) expression. Secreted OPN then activates the CD44 receptor on cancer cells, promoting stemness and chemoresistance.
Wenhan Li, Feiquan Ying, Xinkai Pang, Qiulei Wu, Guoqing Li, Lin Huang, Jiayu Xin, Xiaoli Liu, Pan Liu, Xiaohan Xu, Shuran Tan, Yumei Gao, Tong Liu, Si Sun, Xiaoman Wang, Yiping Wen, Liqiong Cai, Shi Du, Yuan Zhang, Jing Cai   +19 more
wiley   +1 more source

Mitigation of salinity stress in yarrow (Achillea millefolium L.) plants through spermidine application.

PLoS ONE
This study investigated the mitigating effects of spermidine on salinity-stressed yarrow plants (Achillea millefolium L.), an economically important medicinal crop.
Sajedeh Alijani, Mohammad-Reza Raji, Zohreh Emami Bistgani, Abdollah Ehtesham Nia, Mostafa Farajpour   +4 more
doaj   +1 more source