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4. Tailoring Mechanical and Magnetic Properties in Dual-Phase FeCoNi(CuAl) 0.8 High-Entropy Alloy.

Author

Tan, Xiaohua, Chen, Lingmiao, Lv, Mengxin, Peng, Wenfeng, and Xu, Hui

Subjects
MAGNETIC properties, DUAL-phase steel, FACE centered cubic structure, ALLOYS, ELECTRONIC structure, NANOINDENTATION
Abstract

For tailoring the mechanical and magnetic properties of dual-phase high-entropy alloys (HEAs), it is crucial to understand the effect of each phase on the overall properties. In this paper, the effects of individual FCC and BCC phases on the mechanical and magnetic properties of the FeCoNi(CuAl)0.8 HEA are investigated by nanoindentation and first-principles calculations. The nano-hardness of the BCC phase is 8.73 GPa, which is nearly double the 4.60 GPa of the FCC phase, which ascribes to spherical nanoprecipitates that are only observed in the BCC phase leading to precipitation hardening. First-principles calculations on the electronic structure show that calculated saturation magnetization (Ms) of the BCC phase is 0.81 T, higher than 0.77 T of the FCC phase. An approximate yield strength and Ms can be estimated by summing the volume-fraction-weighted contributions from each phase, and are in good agreement with experimental values. It indicates that the overall mechanical and magnetic properties of the dual-phase HEAs can be tailored by tuning the volume fraction of the individual phase. Our findings are helpful to design prospective dual-phase HEAs with both good mechanical properties and soft magnetic performance by adjusting the content of each phase. [ABSTRACT FROM AUTHOR]

Published
2023
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8. Novel lncRNA SFTA1P Promotes Tumor Growth by Down-Regulating miR-4766-5p via PI3K/AKT/mTOR Signaling Pathway in Hepatocellular Carcinoma

Author

Huang,Guohong, Yang,Yimei, Lv,Mengxin, Huang,Tian, Zhan,Xiaoyan, Kang,Wei, and Hou,Jianghou

Subjects
OncoTargets and Therapy
Abstract

Guohong Huang,* Yimei Yang,* Mengxin Lv, Tian Huang, Xiaoyan Zhan, Wei Kang, Jianghou Hou Clinical Research Center of Kunming Maternal and Child Health Hospital, Kunming 650031, People’s Republic of China*These authors contributed equally to this workCorrespondence: Jianghou HouClinical Research Center of Kunming Maternal and Child Health Hospital, Kunming 650031, People’s Republic of ChinaEmail houjiangh@126.comBackground: Hepatocellular carcinoma (HCC) is a common malignancy worldwide with a high mortality rate. lncRNA SFTA1P is highly expressed in HCC. We aimed to study the role of SFTA1P in HCC and its relationship with miR-4766-5p.Materials and Methods: The levels of SFTA1P in HCC tissues and cell lines were determined. Relationship between SFTA1P and clinical features and prognosis was studied. The influence of SFTA1P on HCC cell viability, migration, invasion and apoptosis was studied in vitro. Rescue experiments were conducted after the binding site between SFTA1P and miR-4766-5p confirmed by dual-luciferase assay. The protein expression of AKT, p-AKT, mTOR and p-mTOR in HCC cells with knockdown of SFTA1P was determined by Western blotting. A tumor study in nude mice was conducted in order to assess the effects of SFTA1P on tumor growth characteristics.Results: SFTA1P was up-regulated in HCC tissues and cell lines. SFTA1P expression was closely related to tumor size, vascular invasion and TNM stage. Knockdown of SFTA1P inhibited HCC cell viability, migration and invasion and promoted cell apoptosis. MiR-4766-5p was a target of SFTA1P and knockdown of SFTA1P could decrease the protein expression of p-AKT and p-mTOR. Rescue experiments showed that miR-4766-5p mimics could attenuate the promoting role of SFTA1P on HCC cell viability, invasion and migration, and inhibiting role on cell apoptosis. Moreover, we used nude mice models and also found that the knockdown of SFTA1P reduced tumor volume and weight.Conclusion: lncRNA SFTA1P could promote tumor development in HCC by down-regulating miR-4766-5p expression via PI3K/AKT/mTOR signaling pathway. It may be a potential therapeutic target for HCC.Keywords: hepatocellular carcinoma, SFTA1P, miR-4766-5p, PI3K/AKT/mTOR signaling pathway, tumor growth

Published
2020

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