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Your search keyword '"Yong Ning"' showing total 158 results
Start Over Author "Yong Ning" Publisher elsevier b.v.
158 results on '"Yong Ning"'

46. Methynissolin confers protection against gastric carcinoma via targeting RIPK2.

Author

Zhou, Yun, Liu, Shi-Xiong, Zheng, Ya, Song, Sheng-Rui, Cao, Yi-Bo, Qao, Yu-Qing, Zhou, Yong-Ning, and Wang, Yu-Ping

Abstract

[Display omitted] • RIPK2 functions a critical role in gastric carcinoma-related cachexia development in mice. • Methylnissolin protects against gastric carcinoma-related cachexia by regulating RIPK2. • RIPK2 overexpression blocks lipid homeostasis and reduces lipid biosynthesis in mice. • Methylnissolin suppresses RIPK2-mediated lipid homeostasis dysfunction and decreased lipid biosynthesis. • RIPK2 overexpression decreases the expression of lipogenesis genes in TgRC mice. • Deactivating ASK1 improves lipid homeostasis and inhibits gastric carcinoma-related cachexia. Gastric carcinoma (GC) is one of the most common malignant tumors worldwide, and ranks fifth in incidence and top 5 in tumor-associated mortality. Unfortunately, the molecular mechanisms contributing to GC development are still unclear, urgently requiring more studies. It has been proposed that the multifunctional regulator receptor-interacting protein 2 (RIPK2) is both a regulator that induces stomach cancer and its complications such as cachexia. However, the potential molecular function of RIPK2 on regulation of GC is largely unknown. Moreover, 3,9-di-O-methylnissolin, a flavonoid derived from the roots of Astragalus membranaceus, exhibits protective effects against cancer, inflammation, and bacterial infections. Unfortunately the antineoplastic mechanism of oral exposure of such flavonoid are poorly understood. It remains unknown whether 3,9-di-O-methylnissolin is capable of mitigating GC progression, and potential molecular mechanism. This study aims to provide mechanistic evidence that the 3,9-di-O-methylnissolin-triggered mitigation of GC by repressing RIPK2 activity and its downstream ASK1 signaling. The TCGA database, GEO database, subjects with GC phenotype and GC cell lines were used in this work. 3,9-di-O-methylnissolin intervention reduces stomach cancer cell migration, proliferation and invasion in vitro. Also, 3,9-di-O-methylnissolin confers protection against tumor growth in xenograft model in vivo. Mechanistically, on the other hand, in the para -carcinoma tissue, overexpression of RIPK2 reduces lipogenesis and disturbs lipid homeostasis. Overexpression of RIPK2 activates downstream signaling of ASK1, which in turn downregulates PPARα, a master regulator of lipid metabolism. This process results in lower lipogenesis and downregulation of a set of PPARα target genes. Astragalus membranaceus naturally produces 3,9-di-O-methylnissolin, a bioactive substance that when suppression of ASK1 by methylnissolin reduces RIPK2-induced GC and its related cachexia and restores lipid homeostasis. These findings offer important new understandings of stomach cancer and could aid in the development of treatment plans for gastric carcinoma and cachexia related to cancer. [ABSTRACT FROM AUTHOR]

Published
2024
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50. Fast charge induced phase evolution and element contribution of nickel-rich layered cathode for lithium-ion batteries.

Author

Wang, Qin-Chao, Xu, Zhixin, Li, Xun-Lu, Bai, Jianming, Hu, Enyuan, Bak, Seong-Min, Yang, Xiao-Qing, Zhou, Yong-Ning, and Han, Jie

Abstract

In nickel-rich layered cathode materials, three transition metals (TM = Ni, Co and Mn) play critical roles in Li storage performance. However, rate-dependent phase evolution and elemental contribution of nickel-rich cathode materials are not well understood, but very important for further design and development of these cathodes in high-power applications. Here, the rate-dependent phase evolution and elemental contribution of LiNi 0.5 Mn 0.3 Co 0.2 O 2 (NMC532) cathode are investigated thoroughly by using time-resolved synchrotron-based in situ X-ray diffraction and absorption techniques. The increase of Ni content in NMC532 has been found to be the main cause of the complex structural changes, resulting in distortion of TM-O 6 octahedron and strong static vibration between TM and O coordination. It is revealed that the fast charge (10 and 30C) of NMC532 leads to intermediate Li-poor phases, shrinking of H2 phase region, and prolonged O1 phase. During high-rate charging, Co is oxidized easily in low voltage region, while Ni mainly dominates charge compensation in high voltage region. It is found that delithiation-induced local structure distortion transfers from Ni to Co sites in fast kinetic process. These findings provide in-depth understanding for the fast charge behavior of Ni-rich layered cathode materials, and help to guide further development of advanced high power lithium-ion batteries. [Display omitted] • The C-rate dependent structure evolution of NMC532 cathode is revealed up to 30C. • Different from NMC333, NMC532 exhibits shrunk H2 phase and prolonged O1 phase at high voltage during fast charging. • Co and Mn play important roles in alleviating the distortion of Ni-O 6 octahedra and Ni-TM 6 hexagon upon fast charge. • Delithiation-induced local structure distortion transfers from Ni sites to Co sites in fast charge process. [ABSTRACT FROM AUTHOR]

Published
2024
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