1,599 Works

EGFR promotes the proliferation of quail follicular granulosa cells through the MAPK/extracellular signal-regulated kinase (ERK) signaling pathway

Yan Wu, Hongwei Xiao, Jinsong Pi, Hao Zhang, Ailuan Pan, Yuejin Pu, Zhenhua Liang, Jie Shen & Jinping Du
Follicles develop into preovulatory follicles during folliculogenesis and the majority of small yellow follicles become atretic and gets reabsorbed. In this study, based the RNA-seq results of duck ovary, epidermal growth factor receptor (EGFR) was selected as a candidate gene in follicular development and the role was explored. The results demonstrated that EGFR-P8 was the quail EGFR core promoter. It had an E2F4 binding site within EGFR core promoter. E2F4 overexpression significantly increased EGFR expression...

EGFR promotes the proliferation of quail follicular granulosa cells through the MAPK/extracellular signal-regulated kinase (ERK) signaling pathway

Yan Wu, Hongwei Xiao, Jinsong Pi, Hao Zhang, Ailuan Pan, Yuejin Pu, Zhenhua Liang, Jie Shen & Jinping Du
Follicles develop into preovulatory follicles during folliculogenesis and the majority of small yellow follicles become atretic and gets reabsorbed. In this study, based the RNA-seq results of duck ovary, epidermal growth factor receptor (EGFR) was selected as a candidate gene in follicular development and the role was explored. The results demonstrated that EGFR-P8 was the quail EGFR core promoter. It had an E2F4 binding site within EGFR core promoter. E2F4 overexpression significantly increased EGFR expression...

Effect of polymorphism on IL1A to cancer susceptibility: Evidence based on 34,016 subjects

Haoran Xia, Yiding Chen, Jialin Meng & Chaozhao Liang
IL-1α is closely related to the development and metastasis of cancer, and its polymorphisms have been reported affecting the susceptibility of malignancy tumors, yet the conclusions are controversial. Present an overall meta-analysis was performed to reach more general findings. Relevant literature was searched from Google Scholar, Web of Science, PubMed, EMBASE, CNKI database and Wanfang database, and the association among polymorphism and cancer risk was appraised by counting ORs and 95% CIs of overall and...

ddPCR: a more accurate tool for SARS-CoV-2 detection in low viral load specimens

Tao Suo, Xinjin Liu, Jiangpeng Feng, Ming Guo, Wenjia Hu, Dong Guo, Hafiz Ullah, Yang Yang, Qiuhan Zhang, Xin Wang, Muhanmmad Sajid, Zhixiang Huang, Liping Deng, Tielong Chen, Fang Liu, Ke Xu, Yuan Liu, Qi Zhang, Yingle Liu, Yong Xiong, Guozhong Chen, Ke Lan & Yu Chen
Quantitative real time PCR (RT-PCR) is widely used as the gold standard for clinical detection of SARS-CoV-2. However, due to the low viral load specimens and the limitations of RT-PCR, significant numbers of false negative reports are inevitable, which results in failure to timely diagnose, cut off transmission, and assess discharge criteria. To improve this situation, an optimized droplet digital PCR (ddPCR) was used for detection of SARS-CoV-2, which showed that the limit of detection...

Tick-borne encephalitis virus NS4A ubiquitination antagonizes type I interferon-stimulated STAT1/2 signalling pathway

Qi Yang, Jia You, Yuan Zhou, Yun Wang, Rongjuan Pei, Xinwen Chen, Min Yang & Jizheng Chen
Tick-borne encephalitis virus (TBEV) accounts for approximately 10,000 annual cases of severe encephalitis in Europe and Asia and causes encephalitis in humans. In this study, we demonstrate TBEV appears to activate the interferon (IFN)-β dependent on RIG-I/MDA5. Both the IFN-β accumulation and the IFN stimulated genes (ISGs) transcription greatly delay. Further studies reveal that TBEV NS4A could block the phosphorylation and dimerization of STAT1/STAT2 to affect type I and II IFN-mediated STAT signalling. Additional data...

Penaeidins restrict white spot syndrome virus infection by antagonizing the envelope proteins to block viral entry

Bang Xiao, Qihui Fu, Shengwen Niu, Peng Zhu, Jianguo He & Chaozheng Li
Emerging studies have indicated that some penaeidins restrict virus infection; however, the mechanism(s) involved are poorly understood. In the present study, we uncovered that penaeidins are a novel family of antiviral effectors against white spot syndrome virus (WSSV), which antagonize the envelope proteins to block viral entry. We found that the expression levels of four identified penaeidins from Litopenaeus vannamei, including BigPEN, PEN2, PEN3, and PEN4, were significantly induced in hemocytes during the early stage...

Stabilized diverse HIV-1 envelope trimers for vaccine design

Qian Wang, Bingting Ma, Qingtai Liang, Angqi Zhu, Hua Wang, Lili Fu, Xiaoxu Han, Xuanling Shi, Ye Xiang, Hong Shang & Linqi Zhang
One of the major goals in HIV-1 vaccine development is to achieve properly folded and stabilized envelope glycoprotein (Env) trimers that mimic the native Env on the mature virion. Here, we design and characterize uncleaved prefusion-optimized (UFO) trimers for 12 Envs currently circulating in China. Biochemical and biophysical characterization of these UFO trimers identified two subtype B/Bʹ Envs, CNE6 and MG13, which exhibited the highest trimer content and stability at a level comparable to the...

Stabilized diverse HIV-1 envelope trimers for vaccine design

Qian Wang, Bingting Ma, Qingtai Liang, Angqi Zhu, Hua Wang, Lili Fu, Xiaoxu Han, Xuanling Shi, Ye Xiang, Hong Shang & Linqi Zhang
One of the major goals in HIV-1 vaccine development is to achieve properly folded and stabilized envelope glycoprotein (Env) trimers that mimic the native Env on the mature virion. Here, we design and characterize uncleaved prefusion-optimized (UFO) trimers for 12 Envs currently circulating in China. Biochemical and biophysical characterization of these UFO trimers identified two subtype B/Bʹ Envs, CNE6 and MG13, which exhibited the highest trimer content and stability at a level comparable to the...

Long non-coding RNA DUXAP8 promotes the cell proliferation, migration, and invasion of papillary thyroid carcinoma via miR-223-3p mediated regulation of CXCR4

Yan Liu, Hejia Zhang, Hui Wang, Jiarui Du, Peng Dong, Meihan Liu & Yuanqiang Lin
Papillary thyroid carcinoma (PTC) is a differentiated type of thyroid malignancy with a high incidence. Long non-coding RNA (lncRNA) DUXAP8 has been reported to participate in the proliferation, migration, and invasion of several cancer types. However, its association with PTC has not yet been reported. The current study aimed to investigate the role of DUXAP8 in PTC and revealed the underlying mechanisms. The expression of DUXAP8 was knocked down in two PTC cell lines and...

Rumen bacteria and epithelial metabolism contribute to improving N utilization efficiency of calves

Ningning Zhang, Gaojie Hu, Kai Guo, Tong Fu, Hongxia Lian, Linfeng Wang & Tengyun Gao
The purpose of this study was to investigate the role of urea-N recycling, rumen bacterial community, and rumen epithelial gene expression in nitrogen utilization of calves. Here, 12 Holstein calves were divided into two dietary treatments: a high-protein diet (HP, 173 g/kg), and a low-protein diet (LP, 125 g/kg). Urea-N kinetics was evaluated using urea-15N15N isotope labeling method. Gene expression in rumen epithelium and liver, bacterial diversity, and metabolites in rumen were characterized using transcriptomic,...

Rumen bacteria and epithelial metabolism contribute to improving N utilization efficiency of calves

Ningning Zhang, Gaojie Hu, Kai Guo, Tong Fu, Hongxia Lian, Linfeng Wang & Tengyun Gao
The purpose of this study was to investigate the role of urea-N recycling, rumen bacterial community, and rumen epithelial gene expression in nitrogen utilization of calves. Here, 12 Holstein calves were divided into two dietary treatments: a high-protein diet (HP, 173 g/kg), and a low-protein diet (LP, 125 g/kg). Urea-N kinetics was evaluated using urea-15N15N isotope labeling method. Gene expression in rumen epithelium and liver, bacterial diversity, and metabolites in rumen were characterized using transcriptomic,...

Additional file 1 of Transcutaneous electrical acupoint stimulation for high-normal blood pressure: study protocol for a randomized controlled pilot trial

Yu Wang, Guang-Xia Shi, Zhong-Xue Tian, Jun-Hong Liu, You-Sheng Qi, Jian-Feng Tu, Jing-Wen Yang, Li-Qiong Wang & Cun-Zhi Liu
Additional file 1. Completed Standard Protocol Items: Recommendation for Interventional Trials (SPIRIT) 2013 Checklist: items addressed in this clinical trial protocol.

Knockdown of miR-1275 protects against cardiomyocytes injury through promoting neuromedin U type 1 receptor

Zhu Zeng, Haixin Ma, Jing Chen, Nina Huang, Yudan Zhang, Yufei Su & Huifang Zhang
The present study aimed to assess the role of miR-1275 in cardiac ischemia reperfusion injury. H9 human embryonic stem cell (hESC)-derived cardiomyocytes stimulated by oxygen-glucose deprivation/reoxygenation (OGD/R) were used to simulate myocardial injury in vitro. miR-1275 expression levels in cells were measured by RT-qPCR. The release of lactate dehydrogenase (LDH) and creatine kinase (CK) was examined through LDH and CK ELISA kits. Cell apoptosis was detected through flow cytometry. A Fura-2 Calcium Flux Assay Kit...

The optimal range of serum intact parathyroid hormone for a lower risk of mortality in the incident hemodialysis patients

Xiaoling Zhou, Yidan Guo & Yang Luo
The serum intact parathyroid hormone (iPTH) is associated with the prognosis of hemodialysis (HD) patients, however, its optimal range for reducing mortality remains inconsistent. We designed a prospective cohort study of 346 incident HD patients to assess the association between different serum iPTH level and mortality. According to the Kidney Disease Outcomes Quality Initiative (K/DOQI) international guidelines (2003), we divided patients into three groups (iPTH < 150 pg/mL, 150–300 pg/mL and >300 pg/mL). During the...

SARS-CoV-2 neutralizing antibody responses are more robust in patients with severe disease

Pengfei Wang, Lihong Liu, Manoj S. Nair, Michael T. Yin, Yang Luo, Qian Wang, Ting Yuan, Kanako Mori, Axel Guzman Solis, Masahiro Yamashita, Ankur Garg, Lawrence J. Purpura, Justin C. Laracy, Jian Yu, Leemor Joshua-Tor, Joseph Sodroski, Yaoxing Huang & David D. Ho
We studied plasma antibody responses of 35 patients about 1 month after SARS-CoV-2 infection. Titers of antibodies binding to the viral nucleocapsid and spike proteins were significantly higher in patients with severe disease. Likewise, mean antibody neutralization titers against SARS-CoV-2 pseudovirus and live virus were higher in the sicker patients, by ∼5-fold and ∼7-fold, respectively. These findings have important implications for those pursuing plasma therapy, isolation of neutralizing monoclonal antibodies, and determinants of immunity.

Absent in melanoma 1-like (AIM1L) serves as a novel candidate for overall survival in hepatocellular carcinoma

Wenliang Zhou, Yuan Zhang, Shixi Zhang & Zongguo Yang
Identifying biomarkers for hepatocellular carcinoma (HCC) survival is of great importance for the early detection, monitoring, and predicting for prognosis. This study aimed to investigate the candidate biomarkers for predicting overall survival (OS) in HCC patients. Using RTCGAToolbox, top 50 upregulated differential expressed genes (DEGs) were identified. The least absolute shrinkage and selection operator (LASSO) and Cox models were used to select powerful candidate genes, and log rank method was used to address the survivor...

The role of DRP1 in ropivacaine-induced mitochondrial dysfunction and neurotoxicity

Yan Chen, Lili Yan, Yan Zhang & Xianhui Yang
Ropivacaine is a commonly used local anaesthetic, but its side effects remain largely unknown. In the present study, we investigated the side effects of ropivacaine in human neuronal SH-5Y5Y cells. We show that 0.5% and 1% ropivacaine could cause fission-like mitochondrial morphological changes. Ropivacaine exclusively induces mitochondrial fission protein DRP1, generation of ROS and causes mitochondrial dysfunction including decreasing mitochondrial membrane potential, the activity of cytochrome C oxidase and ATP production. The side effects of...

Improved kth power expectile regression with nonignorable dropouts

Dongyu Li & Lei Wang
The kth (1<k≤ 2) power expectile regression (ER) can balance robustness and effectiveness between the ordinary quantile regression and ER simultaneously. Motivated by a longitudinal ACTG 193A data with nonignorable dropouts, we propose a two-stage estimation procedure and statistical inference methods based on the kth power ER and empirical likelihood to accommodate both the within-subject correlations and nonignorable dropouts. Firstly, we construct the bias-corrected generalized estimating equations by combining the kth power ER and inverse...

Improved kth power expectile regression with nonignorable dropouts

Dongyu Li & Lei Wang
The kth (1<k≤ 2) power expectile regression (ER) can balance robustness and effectiveness between the ordinary quantile regression and ER simultaneously. Motivated by a longitudinal ACTG 193A data with nonignorable dropouts, we propose a two-stage estimation procedure and statistical inference methods based on the kth power ER and empirical likelihood to accommodate both the within-subject correlations and nonignorable dropouts. Firstly, we construct the bias-corrected generalized estimating equations by combining the kth power ER and inverse...

Clinical outcomes, quality of life, and costs evaluation of peritoneal dialysis management models in Shanghai Songjiang District: a multi-center and prospective cohort study

Xiaoyan Ma, Min Tao, Yan Hu, Lunxian Tang, Jiasun Lu, Yingfeng Shi, Hui Chen, Si Chen, Yi Wang, Binbin Cui, Lin Du, Weiwei Liang, Guansen Huang, Xun Zhou, Andong Qiu, Shougang Zhuang, Xiujuan Zang & Na Liu
Background: The new Family-Community-Hospital (FCH) three-level comprehensive management aimed to improve the efficiency and scale of peritoneal dialysis (PD) to meet the increased population of end-stage renal disease (ESRD). Our study focused on the clinical outcomes, quality of life, and costs evaluation of this model in a multi-center and prospective cohort study. Methods: A total of 190 ESRD patients who commenced PD at Shanghai Songjiang District were enrolled. According to different PD management models, patients...

Novel modified nano-silica/polymer composite in water-based drilling fluids to plug shale pores

Fei Liu, Zheng Zheng, Xiuying Wang, Xiaqing Li, Zhaoxiang Zhang, Xuewu Wang, Xiaodong Dai, Yanping Xin, Qingxue Liu, Hailei Yao, Shunyao Jiang, Chao Liu & Xingyan Li
The rapid growth of global energy demand necessitates high-performance water-based drilling fluids (WDFs) with excellent-plugging performance in the deep excavation of shale gas formation. Herein, we report an organic-inorganic nanocomposite (NS-D) as a plugging agent in WDFs to plug the nanoporous of shale and abate the hydration expansion of shale by integrating the advantages of inorganic and polymer nano plugging agents. The results of Fourier Transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (H-NMR)...

Effect of electrical stimulation combined with graphene-oxide-based membranes on neural stem cell proliferation and differentiation

Chuan Fu, Su Pan, Yue Ma, Weijian Kong, Zhiping Qi & Xiaoyu Yang
The combination of composite nerve materials prepared using degradable polymer materials with biological or physical factors has received extensive attention as a means to treat nerve injuries. This study focused on the potential application of graphene oxide (GO) composite conductive materials combined with electrical stimulation (ES) in nerve repair. A conductive poly(L-lactic-co-glycolic acid) (PLGA)/GO composite membrane was prepared, and its properties were tested using a scanning electron microscope (SEM), a contact angle meter, and a...

Aromatic glycosides from the aerial part of Bupleurum chinense

Yan Liu, Dong-Xv Lu, Jin Huang, Juan Pan, Wei Guan, Bing-You Yang & Hai-Xue Kuang
A new aromatic glycoside (1) and twelve (2–13) known aromatic glycosides were isolated from the n-butyl alcohol of the 70% EtOH extract of the aerial part of Bupleurum chinense. Among them, compounds 4–7, 9, 11–13 were isolated from Umbelliferae plants for the first time. Their structures were elucidated by NMR and MS spectroscopy, and the absolute configuration of compound 1 was elucidated by single-crystal X-ray diffraction. Compounds 6 and 10 showed moderate cytotoxic activities on...

Design, synthesis, and biological evaluation of biotinylated colchicine derivatives as potential antitumor agents

Chao Wang, Yujing Zhang, Zeyu Wang, Yuelin Li, Qi Guan, Dongming Xing & Weige Zhang
Chemical drug design based on the biochemical characteristics of cancer cells has become an important strategy for discovering new anti-tumour drugs to improve tumour targeting effects and reduce off-target toxicities. Colchicine is one of the most prominent and historically microtubule-targeting drugs, but its clinical applications are hindered by notorious adverse effects. In this study, we presented a novel tumour-specific conjugate 9 that consists of deacetylcolchicine (Deac), biotin, and a cleavable disulphide linker. 9 was found...

Ensemble and calibration multiply robust estimation for quantile treatment effect

Xiaohong He & Lei Wang
Quantile treatment effects can be important causal estimands in the evaluation of biomedical treatments or interventions for health outcomes such as birthweight and medical cost. However, the existing estimators require either a propensity score model or a conditional density vector model is correctly specified, which is difficult to verify in practice. In this paper, we allow multiple models for propensity score and conditional density vector, then construct a class of calibration estimators based on multiple...

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