2,162 Works

Low intratumor heterogeneity correlates with increased response to PD-1 blockade in renal cell carcinoma

Xia Ran, Jinyuan Xiao, Yi Zhang, Huajing Teng, Fang Cheng, Huiqian Chen, Kaifan Zhang & Zhongsheng Sun
Background:Intratumor heterogeneity (ITH) has been shown to be inversely associated with immune infiltration in several cancers including clear cell renal cell carcinoma (ccRCC), but it remains unclear whether ITH is associated with response to immunotherapy (e.g. PD-1 blockade) in ccRCC.Methods:We quantified ITH using mutant-allele tumor heterogeneity, investigated the association of ITH with immune parameters in patients with ccRCC (n = 336) as well as those with papillary RCC (pRCC, n = 280) from The Cancer...

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
Abstract Background High-normal blood pressure (BP) is associated with increased all-cause, cardiovascular mortality and frequently progresses to hypertension. Transcutaneous electrical acupoint stimulation (TEAS) might be a non-pharmaceutical therapy option to control BP. This trial aims to determine the effectiveness and safety of TEAS combined with lifestyle modification for high-normal BP. Methods/design This prospective, randomized, and parallel clinical trial will be conducted in a community service center in China. Sixty participants with high-normal BP will be...

Sjogren’s syndrome in clinical trials of traditional Chinese medicine: protocol for the development of a core outcome set

Ming Liu, Ya Gao, Yuan Yuan, Shuzhen Shi, Kelu Yang, Jiyuan Shi, Jiarui Wu, Junhua Zhang & Jinhui Tian
Abstract Background Sjogren’s syndrome (SS) is a chronic autoimmune rheumatic disease with an incidence of 0.03 to 0.3%. In recent years, there are an increasing number of randomized controlled trials of traditional Chinese medicine (TCM) for SS. However, there are generally some problems in these published clinical trials: lack of reporting primary or long-term outcomes and the heterogeneous in different clinical trials’ outcome. Our study aims to determine the priority outcomes and standard TCM syndromes...

Transcriptional dynamics of transposable elements when converting fibroblast cells of Macaca mulatta to neuroepithelial stem cells

Dahai Liu, Li Liu, Kui Duan, Junqiang Guo, Shipeng Li, Zhigang Zhao, Xiaotuo Zhang, Nan Zhou & Yun Zheng
Abstract Background Transposable elements (TE) account for more than 50% of human genome. It has been reported that some types of TEs are dynamically regulated in the reprogramming of human cell lines. However, it is largely unknown whether some TEs in Macaca mulatta are also regulated during the reprogramming of cell lines of monkey. Results Here, we systematically examined the transcriptional activities of TEs during the conversion of Macaca mulatta fibroblast cells to neuroepithelial stem...

Mendelian randomization studies of brain MRI yield insights into the pathogenesis of neuropsychiatric disorders

Weichen Song, Wei Qian, Weidi Wang, Shunying Yu & Guan Ning Lin
Abstract Background Observational studies have identified various associations between neuroimaging alterations and neuropsychiatric disorders. However, whether such associations could truly reflect causal relations remains still unknown. Results Here, we leveraged genome-wide association studies (GWAS) summary statistics for (1) 11 psychiatric disorders (sample sizes varied from n = 9,725 to 1,331,010); (2) 110 diffusion tensor imaging (DTI) measurement (sample size n = 17,706); (3) 101 region-of-interest (ROI) volumes, and investigate the causal relationship between brain structures...

Using a WeChat mini-program-based lactation consultant intervention to increase the consumption of mother’s own milk by preterm infants in the neonatal intensive care unit: a study protocol for a cluster randomized controlled trial

Jie Huo, Xinping Wu, Chuanli Gu, Zhangbin Yu, Jun Zhang, Xiaohui Chen, Jingai Zhu, Feng Liu, Beibei Liu, Qianqian Li & Shuping Han
Abstract Background The benefits of mother’s own milk (MOM) for preterm infants have been widely recognized. Many studies have shown that the rate of breastfeeding of premature infants remains very low. Although many studies use measures to promote breastfeeding, few high-quality cluster randomized controlled studies have evaluated the effectiveness of these measures. WeChat is an instant messaging software for smart terminals, and WeChat mini-programs have been widely used to promote health and self-management in China....

TNFα and IFNγ rapidly activate PI3K-AKT signaling to drive glycolysis that confers mesenchymal stem cells enhanced anti-inflammatory property

Chenchang Xu, Chao Feng, Peiqing Huang, Yinghong Li, Rui Liu, Chunxiao Liu, Yuyi Han, Lei Chen, Yayun Ding, Changshun Shao & Yufang Shi
Abstract Background Mesenchymal stem/stromal cells (MSCs) acquire immunosuppressive capacity only in an inflammatory microenvironment. This can be recapitulated in vitro by treating MSCs with inflammatory cytokines TNFα and IFNγ, which induce indoleamine 2,3-dioxygenase (IDO) and TNF-stimulated gene-6 (TSG-6). However, the signaling pathways downstream of the cytokines remain to be elucidated. Methods Inflammatory bowel disease (IBD) mouse model was established by subjecting mice to dextran sulfate sodium (DSS) in drinking water for 7 days. Human UC-MSCs...

Avatrombopag for the treatment of thrombocytopenia post hematopoietic stem-cell transplantation

Meng Zhou, Jiaqian Qi, Chengyuan Gu, Hong Wang, Ziyan Zhang, Depei Wu & Yue Han
Background:Thrombocytopenia post hematopoietic stem-cell transplantation (HCT) usually contributes to poor outcomes with no standardized treatment. Eltrombopag and romiplostim can be feasible for post-HCT thrombocytopenia, but the use of avatrombopag has not yet been evaluated.Objectives:We aimed to evaluate the efficacy and safety of avatrombopag treatment in patients diagnosed with post-HCT thrombocytopenia.Design:In this retrospective study, we evaluated the efficacy and safety of avatrombopag treatment in a cohort of 61 patients diagnosed with thrombocytopenia post HCT in our...

Evidence-based expert consensus on the management of primary central nervous system lymphoma in China

Tong Chen, Yuanbo Liu, Yang Wang, Qing Chang, Jinsong Wu, Zhiliang Wang, Daoying Geng, Jin-Tai Yu, Yuan Li, Xiao-Qiu Li, Hong Chen, Dongxiao Zhuang, Jianyong Li, Bin Wang, Tao Jiang, Lanting Lyu, Yuqin Song, Xiaoguang Qiu, Wenbin Li, Song Lin, Xinghu Zhang, Dehong Lu, Junqiang Lei, Yaolong Chen & Ying Mao
Abstract Primary central nervous system lymphoma (PCNSL) is a type of central nervous system restricted non-Hodgkin lymphoma, whose histopathological diagnosis is majorly large B cell lymphoma. To provide specific, evidence-based recommendations for medical professionals and to promote more standardized, effective and safe treatment for patients with PCNSL, a panel of experts from the Chinese Neurosurgical Society of the Chinese Medical Association and the Society of Hematological Malignancies of the Chinese Anti-Cancer Association jointly developed an...

Rapid and sensitive single-cell RNA sequencing with SHERRY2

Lin Di, Bo Liu, Yuzhu Lyu, Shihui Zhao, Yuhong Pang, Chen Zhang, Jianbin Wang, Hai Qi, Jie Shen & Yanyi Huang
Abstract Background Prevalent single-cell transcriptomic profiling (scRNA-seq) methods are mainly based on the synthesis and enrichment of full-length double-stranded complementary DNA. These approaches are challenging to generate accurate quantification of transcripts when their abundance is low or their full-length amplifications are difficult. Results Based on our previous finding that Tn5 transposase can directly cut-and-tag DNA/RNA hetero-duplexes, we present SHERRY2, a specifically optimized protocol for scRNA-seq without second-strand cDNA synthesis. SHERRY2 is free of pre-amplification and...

Gastric cancer-derived exosomal miR-519a-3p promotes liver metastasis by inducing intrahepatic M2-like macrophage-mediated angiogenesis

Shengkui Qiu, Li Xie, Chen Lu, Chao Gu, Yiwen Xia, Jialun Lv, Zhe Xuan, Lang Fang, Jing Yang, Lu Zhang, Zheng Li, Weizhi Wang, Hao Xu, Bowen Li & Zekuan Xu
Abstract Background Liver metastasis (LM) is a major obstacle to the prognosis of gastric cancer (GC) patients, but the molecular mechanism underlying gastric cancer liver metastasis (GC-LM) remains unknown. Exosomes have been identified as an important mediator of communication between tumor cells and the microenvironment. Therefore, we sought to investigate the effects of primary GC cells on the liver microenvironment and the role of exosomal microRNAs (exo-miRNA) in GC-LM. Methods Sequential differential centrifugation, transmission electron...

Fracture of the lateral process of the talus with associated deltoid ligament injury: a report of 2 cases

Xiang-Yun Jin, Wei-Yuan Xiao, Tao He, Yu-Qi Dong & Chao Zhang
Abstract Background Fractures of the lateral process of the talus (LTPF) are rare and only rarely are associated ligamentous injuries. The injury mechanism is commonly considered to be similar with ankle sprains, where excessive varus of the hindfoot leads to avulsion fractures of the lateral process of the talus. However, previous cadaveric studies have suggested that LTPF was more likely to be caused by eversion or external rotation force with dorsiflexion of the ankle. But...

Jin-Tian-Ge ameliorates ovariectomy-induced bone loss in rats and modulates osteoblastogenesis and osteoclastogenesis in vitro

Yi Shen, Na Wang, Qi Zhang, Yuling Liu, Qudi Wu, Yuqiong He, Yang Wang, Xiaoyan Wang, Qiming Zhao, Quanlong Zhang, Luping Qin & Qiaoyan Zhang
Abstract Background Tiger bone, which had been one of the most famous traditional Chinese medicine for 2000 years, was originate from the skeleton of Panthera tigris L., and had the actions of anti-inflammatory, analgesic, immune-regulatory and promoting healing of bone fracture, and was used for the treatment of osteoporosis and rheumatoid arthritis. Jin-Tian-Ge (JTG), the artificial tiger bone powder, were prepared from skeletons of several farmed animals to substitute the natural tiger bone, and has...

Genome-centric insight into metabolically active microbial population in shallow-sea hydrothermal vents

Xiaofeng Chen, Kai Tang, Mu Zhang, Shujing Liu, Mingming Chen, Peiwen Zhan, Wei Fan, Chen-Tung Arthur Chen & Yao Zhang
Abstract Background Geothermal systems have contributed greatly to both our understanding of the functions of extreme life and the evolutionary history of life itself. Shallow-sea hydrothermal systems are ecological intermediates of deep-sea systems and terrestrial springs, harboring unique and complexed ecosystems, which are well-lit and present physicochemical gradients. The microbial communities of deep-sea and terrestrial geothermal systems have been well-studied at the population genome level, yet little is known about the communities inhabiting the shallow-sea...

Simultaneous spectral recovery and CMOS micro-LED holography with an untrained deep neural network

Iksung Kang, Marc de Cea Falco, Jin Xue, Zheng Li, George Barbastathis & Rajeev Jagga Ram
Lensless holography promises compact and low-cost optical apparatus designs with similar performance to traditional imaging setups. Here, we propose the use of a novel silicon micro-LED fabricated in a commercial CMOS microelectronics process as the illumination source in a lensless holographic microscope. Its small emission area (< 4 μm²) ensures high spatial coherence without the need of a pinhole and results in a large numerical aperture setup, circumventing the limits in source-to-sample distance encountered by...

Broadband behavior of quadratic metalenses with a wide field of view

Yang Liu, Jianhao Zhang, Xavier Le Roux, Eric Cassan, Delphine Marris-Morini, Laurent Vivien, Carlos Alonso Ramos & Daniele Melati
Metalenses are attracting a large interest for the implementation of complex optical functionalities in planar and compact devices. However, chromatic and off-axis aberrations remain standing challenges. Here, we experimentally investigate the broadband behavior of metalenses based on quadratic phase profiles. We show that these metalenses do not only guarantee an arbitrarily large field of view but are also inherently tolerant to longitudinal and transverse chromatic aberrations. As such, we demonstrate a single-layer, silicon metalens with...

Cancer-associated fibroblast-specific lncRNA LINC01614 enhances glutamine uptake in lung adenocarcinoma

Tongyan Liu, Chencheng Han, Panqi Fang, Zhifei Ma, Xiaoxiao Wang, Hao Chen, Siwei Wang, Fanchen Meng, Cheng Wang, Erbao Zhang, Guozhang Dong, Hongyu Zhu, Wenda Yin, Jie Wang, Xianglin Zuo, Mantang Qiu, Jinke Wang, Xu Qian, Hongbing Shen, Lin Xu, Zhibin Hu & Rong Yin
Abstract Background Besides featured glucose consumption, recent studies reveal that cancer cells might prefer “addicting” specific energy substrates from the tumor microenvironment (TME); however, the underlying mechanisms remain unclear. Methods Fibroblast-specific long noncoding RNAs were screened using RNA-seq data of our NJLCC cohort, TCGA, and CCLE datasets. The expression and package of LINC01614 into exosomes were identified using flow cytometric sorting, fluorescence in situ hybridization (FISH), and quantitative reverse transcription polymerase chain reaction (RT-PCR). The...

Histological and molecular responses of Vigna angularis to Uromyces vignae infection

Xiwang Ke, Jie Wang, Xiaodan Xu, Yongxia Guo, Yuhu Zuo & Lihua Yin
Abstract Background To advance the understanding of adzuki bean (Vigna angularis) resistance to infection with the rust-causing fungus Uromyces vignae (Uv), we comprehensively analyzed histological events and the transcriptome of Uv-infected adzuki bean. Results Compared with the susceptible cv. Baoqinghong (BQH), the resistant cv. QH1 showed inhibition of uredospore germination and substomatal vesicle development, intense autofluorescence of cells around the infection site, and cell wall deposit formation in response to Uv infection. In cv. QH1,...

GATA-type transcriptional factor SpGAT1 interacts with SpMIG1 and promotes lipid accumulation in the oleaginous yeast $$Saitozyma \ podzolica$$ S a i t o z y m a p o d

Yulu Ran, Hui Xu, Qingzhuoma Yang, Yi Xu, Huahao Yang, Dairong Qiao & Yi Cao
Abstract Background In oleaginous yeast, nitrogen limitation is a critical parameter for lipid synthesis. GATA-family transcriptional factor GAT1, a member of the target of rapamycin (TOR) pathway and nitrogen catabolite repression (NCR), regulates nitrogen uptake and utilization. Therefore, it is significant to study the SpGAT1 regulatory mechanism of lipid metabolism for conversion of biomass to microbial oil in $$Saitozyma \ podzolica$$ S a i t o z y m a p o d z o...

Inhibition of sphingolipid metabolism in osteosarcoma protects against CD151-mediated tumorigenicity

Hongsheng Wang, Xinmeng Jin, Yangfeng Zhang, Zhuoying Wang, Tao Zhang, Jing Xu, Jiakang Shen, Pengfei Zan, Mengxiong Sun, Chongren Wang, Yingqi Hua, Xiaojun Ma & Wei Sun
Abstract Osteosarcoma is the most common primary bone tumor, with a poor prognosis owing to the lack of efficient molecular-based targeted therapies. Previous studies have suggested an association between CD151 and distinct consequences in osteosarcoma tumorigenicity. However, the potential of CD151 as a therapeutic target has not yet been sufficiently explored. Here, we performed integrated transcriptomic and metabolomic analyses of osteosarcoma and identified sphingolipid metabolism as the top CD151-regulated pathway. CD151 regulates sphingolipid metabolism primarily...

Inhibition of sphingolipid metabolism in osteosarcoma protects against CD151-mediated tumorigenicity

Hongsheng Wang, Xinmeng Jin, Yangfeng Zhang, Zhuoying Wang, Tao Zhang, Jing Xu, Jiakang Shen, Pengfei Zan, Mengxiong Sun, Chongren Wang, Yingqi Hua, Xiaojun Ma & Wei Sun
Abstract Osteosarcoma is the most common primary bone tumor, with a poor prognosis owing to the lack of efficient molecular-based targeted therapies. Previous studies have suggested an association between CD151 and distinct consequences in osteosarcoma tumorigenicity. However, the potential of CD151 as a therapeutic target has not yet been sufficiently explored. Here, we performed integrated transcriptomic and metabolomic analyses of osteosarcoma and identified sphingolipid metabolism as the top CD151-regulated pathway. CD151 regulates sphingolipid metabolism primarily...

Theoretical analysis of 60-W solar-pumped single crystal fiber laser

Pengfei Xiang, Lanling Lan, Yan Liu, Hongfei Qi, Yulong Tang & xiuhua ma
In order to improve the output power of solar-pumped single-crystal fiber (SCF) lasers, a novel solar concentrating system is proposed, which consists of a parabolic mirror, a 3D-CPC, and a hollow-core reflector. By ray tracing with TracePro, influence of the fiber’s diameter and the hollow reflector’s shape on the solar absorption efficiency is theoretically investigated. A typical Nd:YAG SCF with a core-diameter of 1 mm, length of 150 mm and doping concentration of 1 at.%...

Gene Identification, expression analysis and molecular docking of ATP sulfurylase in the selenization pathway of Cardamine hupingshanensis

Zhijing Xiao, Yanke Lu, Yi Zou, Chi Zhang, Li Ding, Kai Luo, Qiaoyu Tang & Yifeng Zhou
Abstract Background ATP sulfurylase (ATPS) is a crucial enzyme for the selenate assimilation pathway in plants. Results In this study, genome-wide and comparative analyses of ATPS in Cardamine hupingshanensis, including sequence and structural analyses, were performed. The expression of ChATPS gene family members in C. hupingshanensis under selenium (Se) stress was also investigated, and our results suggest that ChATPS1-2 play key roles in the response to Se stress. Nine ATPS genes were found from C....

Comparison of transvaginal cervical cerclage versus laparoscopic abdominal cervical cerclage in cervical insufficiency: a retrospective study from a single centre

Guiqiong Huang, Chunyan Deng, Hua Liao, Qing Hu, Haiyan Yu & Xiaodong Wang
Abstract Background Cervical cerclage has been proposed as an effective treatment for cervical insufficiency, but there has been controversy regarding the surgical options of cervical cerclage in singleton and twin pregnancies. This study aimed to compare the pregnancy outcomes between transvaginal cervical cerclage (TVC) and laparoscopic abdominal cervical cerclage (LAC) in patients with cervical insufficiency. We also aimed to evaluate the efficacy and safety, and provide more evidence to support the application of cervical cerclage...

Caveolin-1 accelerates hypoxia-induced endothelial dysfunction in high-altitude cerebral edema

Yan Xue, Xueting Wang, Baolan Wan, Dongzhi Wang, Meiqi Li, Kang Cheng, Qianqian Luo, Dan Wang, Yapeng Lu & Li Zhu
Abstract Background High-altitude cerebral edema (HACE) is a serious and potentially fatal brain injury that is caused by acute hypobaric hypoxia (HH) exposure. Vasogenic edema is the main pathological factor of this condition. Hypoxia-induced disruptions of tight junctions in the endothelium trigger blood‒brain barrier (BBB) damage and induce vasogenic edema. Nuclear respiratory factor 1 (NRF1) acts as a major regulator of hypoxia-induced endothelial cell injury, and caveolin-1 (CAV-1) is upregulated as its downstream gene in...

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