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Guo R, Kong J, Tang P, Wang S, Sang L, Liu L, Guo R, Yan K, Qi M, Bian Z, Song Y, Jiang Z, Li Y. Unbiased Single-Cell Sequencing of Hematopoietic and Immune Cells from Aplastic Anemia Reveals the Contributors of Hematopoiesis Failure and Dysfunctional Immune Regulation. Adv Sci (Weinh) 2024; 11:e2304539. [PMID: 38145351 PMCID: PMC10933602 DOI: 10.1002/advs.202304539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/24/2023] [Indexed: 12/26/2023]
Abstract
Aplastic anemia (AA) is a bone marrow (BM) failure syndrome mediated by hyperactivated T-cells with heterogeneous pathogenic factors. The onset of BM failure cannot be accurately determined in humans; therefore, exact pathogenesis remains unclear. In this study, a cellular atlas and microenvironment interactions is established using unbiased single-cell RNA-seq, along with multi-omics analyses (mass cytometry, cytokine profiling, and oxidized fatty acid metabolomics). A new KIR+ CD8+ regulatory T cells (Treg) subset is identified in patients with AA that engages in immune homeostasis. Conventional CD4+ T-cells differentiate into highly differentiated T helper cells with type 2 cytokines (IL-4, IL-6, and IL-13), GM-SCF, and IL-1β. Immunosuppressive homeostasis is impaired by enhanced apoptosis of activated Treg cells. Pathological Vδ1 cells dominated the main fraction of γδ T-cells. The B/plasma, erythroid, and myeloid lineages also exhibit substantial pathological features. Interactions between TNFSF12-TNFRSF12A, TNF-TNFRSF1A, and granzyme-gasdermin are associated with the cell death of hematopoietic stem/progenitor (HSPCs), Treg, and early erythroid cells. Ferroptosis, a major driver of HSPCs destruction, is identified in patients with AA. Furthermore, a case of twins with AA is reported to enhance the persuasiveness of the analysis. These results collectively constitute the cellular atlas and microenvironment interactions in patients with AA and provide novel insights into the development of new therapeutic opportunities.
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Affiliation(s)
- Rongqun Guo
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
- Academy of Medical ScienceHenan Medical College of Zhengzhou UniversityZhengzhouHenan450052China
| | - Jingjing Kong
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Ping Tang
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Shuya Wang
- Department of Blood TransfusionThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Lina Sang
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Liu Liu
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Rong Guo
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Ketai Yan
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
- Academy of Medical ScienceHenan Medical College of Zhengzhou UniversityZhengzhouHenan450052China
| | - Mochu Qi
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Zhilei Bian
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Yongping Song
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Zhongxing Jiang
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
| | - Yingmei Li
- Department of HematologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China
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Sang L, Liu Z, Huang C, Xu J, Wang H. Multiparametric MRI-based radiomics nomogram for predicting the hormone receptor status of HER2-positive breast cancer. Clin Radiol 2024; 79:60-66. [PMID: 37838543 DOI: 10.1016/j.crad.2023.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/28/2023] [Accepted: 09/12/2023] [Indexed: 10/16/2023]
Abstract
AIM To investigate the value of multiparametric magnetic resonance imaging (MRI)-based radiomics nomograms for predicting the hormone receptor (HR) status of HER2-positive breast cancer. MATERIALS AND METHODS Patients with HER2-positive invasive breast cancer were divided randomly into training (68 patients) and validation (30 patients) sets. All were classified as either HR-positive (HR+) or negative (HR-) at histopathology. Two radiologists outlined the three-dimensional (3D) volumetric regions of interest (VOI) on the MRI images. Features (n=1,096) were extracted from the T2-weighted imaging (WI), apparent diffusion coefficient (ADC), and dynamic contrast-enhanced (DCE) images separately. Dimensionality was reduced using feature screening. Binary radiomics prediction models were established using a logistic regression classifier and were validated in the validation set. To construct a nomogram, independent predictors were identified using multivariate logistic regression analysis. The predictive efficacy of the model was assessed using the area under the receiver operating characteristic curve (AUC). RESULTS Ten radiomics features were obtained after feature dimensionality reduction based on the merged T2WI, ADC, and DCE images. The diagnostic efficacy of the radiomics signature using the three sequences was better than that of any single sequence (training set AUC: 0.797; validation set AUC: 0.75). Using multivariate logistic regression analysis, the independent predictors for identifying HR status were combined radiomics signature and peritumoural oedema. Nomograms constructed by combining the radiomics signature and peritumoural oedema showed good discrimination in both the training and validation sets (AUC: 0.815 and 0. 805, respectively). CONCLUSION A multiparametric MRI-based nomogram incorporating the radiomics signature and peritumoural oedema can assess the HR status of HER2-positive breast cancer. The resulting model can improve diagnostic accuracy, improving patient outcomes.
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Affiliation(s)
- L Sang
- Department of Radiology, Shandong Provincial Hospital, Affiliated to Shandong First Medical University, No. 324, Jingwu Road, Huaiyin District, Jinan 250012, Shandong, China
| | - Z Liu
- Department of Radiology, Shandong Provincial Hospital, Affiliated to Shandong First Medical University, No. 324, Jingwu Road, Huaiyin District, Jinan 250012, Shandong, China
| | - C Huang
- Department of Research Collaboration, R&D Center, Beijing Deepwise & League of, PHD Technology Co. Ltd, Beijing, China
| | - J Xu
- Department of Research Collaboration, R&D Center, Beijing Deepwise & League of, PHD Technology Co. Ltd, Beijing, China
| | - H Wang
- Department of Radiology, Shandong Provincial Hospital, Affiliated to Shandong First Medical University, No. 324, Jingwu Road, Huaiyin District, Jinan 250012, Shandong, China.
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Shen X, Dong P, Kong J, Sun N, Wang F, Sang L, Xu Y, Zhang M, Chen X, Guo R, Wang S, Lin Q, Jiang Z, Xu S, Zhang C, Bian Z, Wang W, Guo R. Targeted single-cell RNA sequencing analysis reveals metabolic reprogramming and the ferroptosis-resistant state in hematologic malignancies. Cell Biochem Funct 2023; 41:1343-1356. [PMID: 37823726 DOI: 10.1002/cbf.3869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/26/2023] [Accepted: 09/29/2023] [Indexed: 10/13/2023]
Abstract
Hematologic malignancies are the most common hematopoietic diseases and a major public health concern. However, the mechanisms underlying myeloid tumors remain unknown owing to the intricate interplay between mutations and diverse clonal evolution patterns, as evidenced by the analysis of bulk cell-derived omics data. Several single-cell omics techniques have been used to characterize the hierarchies and altered immune microenvironments of hematologic malignancies. The comprehensive single-cell atlas of hematologic malignancies provides novel opportunities for personalized combinatorial targeted treatments, avoiding unwanted chemo-toxicity. In the present study, we performed transcriptome sequencing by combining single-cell RNA sequencing (scRNA-seq) with a targeted oncogenic gene panel for acute myeloid leukemia, overcoming the limitations of scRNA-seq in detecting oncogenic mutations. The distribution of oncogenic IDH1, IDH2, and KRAS mutations in each cell type was identified in the bone marrow (BM) samples of each patient. Our findings suggest that ferroptosis and metabolic reprogramming are involved in the tumorigenesis and chemotherapy resistance of oncogenic mutation-carrying cells. Biological progression via IDH1, IDH2, and KRAS mutations arrests hematopoietic maturation. Our study findings provide a rationale for using primary BM cells for personalized treatment in clinical settings.
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Affiliation(s)
- Xiaohui Shen
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Peiyuan Dong
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jingjing Kong
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Nannan Sun
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Fang Wang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lina Sang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yan Xu
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Mengmeng Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaoli Chen
- Jiangxi Health Commission Key Laboratory of Leukemia, Ganzhou Hospital-Nanfang Hospital, Southern Medical University, Ganzhou, Jiangxi, China
| | - Rong Guo
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Shuya Wang
- Department of Blood Transfusion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Quande Lin
- Department of Hematology, The Afliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Zhongxing Jiang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Shan Xu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Congli Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhilei Bian
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Weimin Wang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Rongqun Guo
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Ding X, Cui X, Tseng LT, Wang Y, Qu J, Yue Z, Sang L, Lee WT, Guan X, Bao N, Sathish CI, Yu X, Xi S, Breese MBH, Zheng R, Wang X, Wang L, Wu T, Ding J, Vinu A, Ringer SP, Yi J. Realization of High Magnetization in Artificially Designed Ni/NiO Layers through Exchange Coupling. Small 2023:e2304369. [PMID: 37715070 DOI: 10.1002/smll.202304369] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/23/2023] [Indexed: 09/17/2023]
Abstract
High-magnetization materials play crucial roles in various applications. However, the past few decades have witnessed a stagnation in the discovery of new materials with high magnetization. In this work, Ni/NiO nanocomposites are fabricated by depositing Ni and NiO thin layers alternately, followed by annealing at specific temperatures. Both the as-deposited samples and those annealed at 373 K exhibit low magnetization. However, the samples annealed at 473 K exhibit a significantly enhanced saturation magnetization exceeding 607 emu cm-3 at room temperature, surpassing that of pure Ni (480 emu cm-3 ). Material characterizations indicate that the composite comprises NiO nanoclusters of size 1-2 nm embedded in the Ni matrix. This nanoclustered NiO is primarily responsible for the high magnetization, as confirmed by density functional theory calculations. The calculations also indicate that the NiO clusters are ferromagnetically coupled with Ni, resulting in enhanced magnetization. This work demonstrates a new route toward developing artificial high-magnetization materials using the high magnetic moments of nanoclustered antiferromagnetic materials.
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Affiliation(s)
- Xiang Ding
- School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, China
| | - Xiangyuan Cui
- School of Aerospace Mechanical & Mechatronic Engineering and Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Li-Ting Tseng
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Yiren Wang
- School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Jiangtao Qu
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Zengji Yue
- Institute of Photonic Chips, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Lina Sang
- School of Integrated Circuit Science and Engineering, Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Wai Tung Lee
- Science Directorate, European Spallation Source Partikelgatan 2, Lund, 224 84, Sweden
| | - Xinwei Guan
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Nina Bao
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 1192690
| | - C I Sathish
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Xiaojiang Yu
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 119260
| | - Shibo Xi
- Institute of Chemical and Engineering Science, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore, 627833
| | - Mark B H Breese
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 119260
| | - Rongkun Zheng
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2500, Australia
| | - Lan Wang
- School of Physics, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Tom Wu
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 1192690
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Simon P Ringer
- School of Aerospace Mechanical & Mechatronic Engineering and Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
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Sang L, Chen G, Cao J, Liu J, Yu Y. PhRHMs play important roles in leaf and flower development and anthocyanin synthesis in petunia. Physiol Plant 2022; 174:e13773. [PMID: 36066309 DOI: 10.1111/ppl.13773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Anthocyanins, vital metabolites in plants, are formed by anthocyanidins combined with various monosaccharides, including glucose, rhamnose, and arabinose. Rhamnose contributes greatly to the glycosylation of anthocyanidins. There are two kinds of rhamnose synthase (RS): rhamnose biosynthesis (RHM), and nucleotide-RS/epimerase-reductase (UER1). Nevertheless, no RS isoform was reported to be involved in anthocyanin synthesis. Here, three homologous PhRHM genes, namely PhRHM1, PhRHM2, and PhRHM3, and one PhUER1 gene from petunia were cloned and characterized. Green fluorescent protein fusion protein assays revealed that PhRHMs and PhUER1 are localized in the cytoplasm. We obtained PhRHM1 or/and PhRHM2 or PhUER1 silenced petunia plants and did not attempt to obtain PhRHM3 silenced plants since PhRHM3 mRNA was not detected in petunia organs examined. PhRHM1 and PhRHM2 (PhRHM1-2) silencing induced abnormal plant growth and decreased the contents of l-rhamnose, photosynthetic pigments and total anthocyanins, while PhUER1 silencing did not cause any visible phenotypic changes. Flavonoid metabolome analysis further revealed that PhRHM1-2 silencing reduced the contents of anthocyanins with rhamnose residue. These results revealed that PhRHMs contribute to the biosynthesis of rhamnose and that PhRHMs participate in the anthocyanin rhamnosylation in petunia, while PhUER1 does not.
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Affiliation(s)
- Lina Sang
- College of Horticulture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Guoju Chen
- College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Jiahao Cao
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Juanxu Liu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Yixun Yu
- College of Horticulture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
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Zhang D, Li Y, Du C, Sang L, Liu L, Li Y, Wang F, Fan W, Tang P, Zhang S, Chen D, Wang Y, Wang X, Xie X, Jiang Z, Song Y, Guo R. Evidence of pyroptosis and ferroptosis extensively involved in autoimmune diseases at the single-cell transcriptome level. J Transl Med 2022; 20:363. [PMID: 35962439 PMCID: PMC9373312 DOI: 10.1186/s12967-022-03566-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/01/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Approximately 8-9% of the world's population is affected by autoimmune diseases, and yet the mechanism of autoimmunity trigger is largely understudied. Two unique cell death modalities, ferroptosis and pyroptosis, provide a new perspective on the mechanisms leading to autoimmune diseases, and development of new treatment strategies. METHODS Using scRNA-seq datasets, the aberrant trend of ferroptosis and pyroptosis-related genes were analyzed in several representative autoimmune diseases (psoriasis, atopic dermatitis, vitiligo, multiple sclerosis, systemic sclerosis-associated interstitial lung disease, Crohn's disease, and experimental autoimmune orchitis). Cell line models were also assessed using bulk RNA-seq and qPCR. RESULTS A substantial difference was observed between normal and autoimmune disease samples involving ferroptosis and pyroptosis. In the present study, ferroptosis and pyroptosis showed an imbalance in different keratinocyte lineages of psoriatic skinin addition to a unique pyroptosis-sensitive keratinocyte subset in atopic dermatitis (AD) skin. The results also revealed that pyroptosis and ferroptosis are involved in epidermal melanocyte destruction in vitiligo. Aberrant ferroptosis has been detected in multiple sclerosis, systemic sclerosis-associated interstitial lung disease, Crohn's disease, and autoimmune orchitis. Cell line models adopted in the study also identified pro-inflammatory factors that can drive changes in ferroptosis and pyroptosis. CONCLUSION These results provide a unique perspective on the involvement of ferroptosis and pyroptosis in the pathological process of autoimmune diseases at the scRNA-seq level. IFN-γ is a critical inducer of pyroptosis sensitivity, and has been identified in two cell line models.
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Affiliation(s)
- Danfeng Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yadan Li
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Henan Medical College of Zhengzhou University, Zhengzhou, Henan, China
- Laboratory Animal Center, School of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Chunyan Du
- Laboratory Animal Center, School of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Lina Sang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Liu Liu
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yingmei Li
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Fang Wang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wenjuan Fan
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Ping Tang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Sidong Zhang
- Department of Pediatric Hematology and Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Dandan Chen
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yanmei Wang
- Department of Hematology, Zhengzhou People's Hospital, Zhengzhou, Henan, China
| | - Xiaoyi Wang
- Department of Pediatric Hematology and Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinsheng Xie
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
| | - Zhongxing Jiang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
| | - Yongping Song
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
| | - Rongqun Guo
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
- Academy of Medical Science, Henan Medical College of Zhengzhou University, Zhengzhou, Henan, China.
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Sang L, Li YM. [Mechanical ventilation strategy for acute respiratory distress syndrome patients supported by veno-venous extracorporeal membrane oxygenation]. Zhonghua Yi Xue Za Zhi 2022; 102:1895-1898. [PMID: 35768387 DOI: 10.3760/cma.j.cn112137-20220207-00241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The mortality of acute respiratory distress syndrome (ARDS) patients is very high, veno-venous extracorporeal membrane oxygenation (VV-ECMO) has been proved to improve the prognosis of these patients, but the maximization of this benefit relies on the appropriate mechanical ventilation strategy; with the new research evidence arise, scholars have reached a certain consensus on how to implement mechanical ventilation in ARDS patients supported by VV-ECMO, but there are still many controversies. Based on the evidences of current researches and clinical experiences, this article analyzes the hot issues of mechanical ventilation strategy for these patients, including the implementation of early 'overprotective' ventilation strategy, whether spontaneous breathing allowed, prone ventilation and ventilator weaning.
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Affiliation(s)
- L Sang
- Department of Critical Care Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou Institute of Respiratory Health, Guangzhou 510120, China
| | - Y M Li
- Department of Critical Care Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou Institute of Respiratory Health, Guangzhou 510120, China
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Liu J, Shao B, Liu X, Li M, Sang L, Zhang W, Zhang S, Feng J, Li C, Dou S, Li J, Zhang P, Zhou L, Wang X. Improving Superconducting Performance of Fe(Se, Te) with In Situ Formed Grain-Boundary Strengthening and Flux Pinning Centers. ACS Appl Mater Interfaces 2022; 14:2246-2254. [PMID: 34978411 DOI: 10.1021/acsami.1c18906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
It is well known that the existence of interstitial Fe is a great obstacle to enhancing the superconducting properties of the Fe(Se, Te) system. In this work, a silver and oxygen codoping effect toward enhancement of the superconductivity and flux pinning in Fe(Se, Te) bulks is reported. The oxygen ions from SeO2 can induce the precipitation of interstitial Fe as Fe2O3, thus simultaneously optimizing the superconducting properties of Fe(Se, Te) and forming extra flux pinning centers, while the existence of Ag can enhance the intergrain connections of the polycrystalline material by improving the electron transport at grain boundaries. Compared with the undoped sample, the critical current density, the upper critical field, and the thermally activated flux flow activation energy are greatly enhanced by 4.7, 1.7, and 1.5 times, respectively. The novel synthesis technique and optimized properties of this work can pave the way for the development of high-performance Fe(Se, Te) superconducting wires or tapes.
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Affiliation(s)
- Jixing Liu
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Botao Shao
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Xueqian Liu
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Meng Li
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2500, Australia
| | - Lina Sang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2500, Australia
| | - Wen Zhang
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Shengnan Zhang
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Jianqing Feng
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Chengshan Li
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Shixue Dou
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2500, Australia
| | - Jianfeng Li
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Pingxiang Zhang
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Lian Zhou
- Superconducting Materials Research Center, Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2500, Australia
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Sang L, Wu X, Yan T, Naren D, Liu X, Zheng X, Zhang N, Wang H, Li Y, Gong Y. The m6A RNA methyltransferase METTL3/METTL14 promotes leukemogenesis through the mdm2/p53 pathway in acute myeloid leukemia. J Cancer 2022; 13:1019-1030. [PMID: 35154467 PMCID: PMC8824895 DOI: 10.7150/jca.60381] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 12/05/2021] [Indexed: 11/16/2022] Open
Abstract
N6-methyladenosine (m6A) is the most abundant internal modification in mammalian mRNA and recent studies have highlighted the importance of m6A levels in tumor development. In this study, we investigated the expression of methyltransferase-like 3 (METTL3) and 14 (METTL14), components of the RNA m6A methyltransferase complex, in samples from 89 patients with acute myeloid leukemia (AML), and followed the survival of 75 of these patients. Our results show that METTL3 and METTL14 are highly expressed in most of the patients with AML (except those with APL), and high levels of METTL3 and/or METTL14 correlated to shorter survival in the patients. In leukemia cell lines K562 and kasumi-1, both METTL3 and METTL14 promote cell proliferation and cell cycle, and the knockdown of METTL3 and METTL14 inhibits proliferation, and induces apoptosis and differentiation. Notably, the knockdown of METTL3 and METTL14 in K562 cell line leads to several changes in the expression of p53 signal pathway, including the upregulation of p53, cyclin dependent kinase inhibitor 1A (CDKN1A/p21), and downregulation of mdm2. Importantly, the m6A level of mdm2 mRNA was significant lower after knock-down of METTL3 and METTL14 examined by m6A-RIP and mdm2 qPCR assay, and the half-life of mdm2 under actinomycin-D treatment became shorter. Taken together, our study demonstrates that the lower m6A levels of mdm2 mRNA mediated by the knockdown of METTL3 and METTL14 could lead to the low stability of mdm2 mRNA transcripts and low expression of MDM2, in the end, activate p53 signal pathway. Both METTL3 and METTL14 play an oncogenic role in AML by targeting mdm2/p53 signal pathway.
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Amaral TF, Grázia JGV, Gonella-Diaza AM, Martinhão LAG, Heredia D, Melo GD, Pohler KG, Estrada-Cortés E, Dikmen S, Sosa F, Jensen LM, Sang L, Siqueira LGB, Viana JHM, Hansen PJ. 84 Actions of DKK1 on the bovine embryo during the morula-to-blastocyst stage of development on pregnancy outcomes and placental hormone secretion after embryo transfer. Reprod Fertil Dev 2021; 34:279. [PMID: 35231213 DOI: 10.1071/rdv34n2ab84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- T F Amaral
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - J G V Grázia
- FIVX Apoyar Biotech LTDA, Juiz de Fora, Minas Gerais, Brazil
| | - A M Gonella-Diaza
- Department of Animal Sciences, University of Florida, North Florida Research and Education Center, Marianna, FL, USA
| | - L A G Martinhão
- Biological Science Institute, University of Brasília, Brasília, DF, Brazil
| | - D Heredia
- Department of Animal Sciences, University of Florida, North Florida Research and Education Center, Marianna, FL, USA
| | - G D Melo
- Department of Animal Sciences, Texas A&M University, College Station, TX, USA
| | - K G Pohler
- Department of Animal Sciences, Texas A&M University, College Station, TX, USA
| | - E Estrada-Cortés
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - S Dikmen
- Department of Animal Science, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - F Sosa
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - L M Jensen
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
| | - L Sang
- Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - L G B Siqueira
- Brazilian Agricultural Research Corporation (Embrapa), Juiz de Fora, Minas Gerais, Brazil
| | - J H M Viana
- Brazilian Agricultural Research Corporation (Embrapa), Juiz de Fora, Minas Gerais, Brazil
| | - P J Hansen
- Department of Animal Sciences, University of Florida, Gainesville, FL, USA
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11
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Zhong S, Sang L, Zhao Z, Deng Y, Liu H, Yu Y, Liu J. Phosphoproteome analysis reveals the involvement of protein dephosphorylation in ethylene-induced corolla senescence in petunia. BMC Plant Biol 2021; 21:512. [PMID: 34732145 PMCID: PMC8565076 DOI: 10.1186/s12870-021-03286-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Senescence represents the last stage of flower development. Phosphorylation is the key posttranslational modification that regulates protein functions, and kinases may be more required than phosphatases during plant growth and development. However, little is known about global phosphorylation changes during flower senescence. RESULTS In this work, we quantitatively investigated the petunia phosphoproteome following ethylene or air treatment. In total, 2170 phosphosites in 1184 protein groups were identified, among which 2059 sites in 1124 proteins were quantified. To our surprise, treatment with ethylene resulted in 697 downregulated and only 117 upregulated phosphosites using a 1.5-fold threshold (FDR < 0.05), which showed that ethylene negatively regulates global phosphorylation levels and that phosphorylation of many proteins was not necessary during flower senescence. Phosphoproteome analysis showed that ethylene regulates ethylene and ABA signalling transduction pathways via phosphorylation levels. One of the major targets of ethylene-induced dephosphorylation is the plant mRNA splicing machinery, and ethylene treatment increases the number of alternative splicing events of precursor RNAs in petunia corollas. CONCLUSIONS Protein dephosphorylation could play an important role in ethylene-induced senescence, and ethylene treatment increased the number of AS precursor RNAs in petunia corollas.
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Affiliation(s)
- Shiwei Zhong
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642 China
- School of Landscape Architecture School of Tourism and Health, Zhejiang A & F University, Zhejiang, 311300 Hangzhou China
| | - Lina Sang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642 China
| | - Zhixia Zhao
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642 China
| | - Ying Deng
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642 China
| | - Haitao Liu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642 China
| | - Yixun Yu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642 China
- Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou, 510642 China
| | - Juanxu Liu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642 China
- School of Landscape Architecture School of Tourism and Health, Zhejiang A & F University, Zhejiang, 311300 Hangzhou China
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12
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Sang L, Li YM. [The application prospect of electrical impedance tomography in chronic airway disease]. Zhonghua Jie He He Hu Xi Za Zhi 2021; 44:784-786. [PMID: 34496518 DOI: 10.3760/cma.j.cn112147-20210427-00294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
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13
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Wang J, Sun S, Chen Y, Chen D, Sang L, Xie X. Characterization of Staphylococcus aureus ST3320 clone causing fatal respiratory infection in rabbits. World Rabbit Sci 2021. [DOI: 10.4995/wrs.2021.14280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
<em>Staphylococcus aureus</em> is a well-known pathogen that infects humans and animals. However, information on the fatal respiratory infection in rabbits caused by<em> S. aureus</em> is still limited. In the present study, a <em>S. aureus</em> isolate designated ND01 was recovered from lung samples of rabbits that died of fatal respiratory infection, and the ND01 was characterised by intranasal infection of rabbits, multi-locus sequencing typing, screening virulence genes and testing antimicrobial susceptibility. Clinical signs of matted forepaws and pathological lesions of haemorrhagic tracheitis and necrotising haemorrhagic pneumonia were observed in the ND01 infected rabbits, which were identical to those of naturally infected ones. The sequence type of the ND01 was defined as ST3320 and the ND01 was further grouped into the clonal complex 398. Notably, the ND01 was <em>pvl-positive</em> <em>S. aureus</em> and carried the human-associated scn gene. Moreover, the ND01 was methicillin-susceptible <em>S. aureus</em> and was susceptible to 6 of 10 tested antibiotics. This study described the characteristics of the ND01 causing fatal respiratory infection in rabbits. The results are helpful to further the understanding of the pathogenicity of S. aureus ST3320 clone in rabbits. The results also highlighted that operators must be on the alert for the colonisation of <em>pvl-positive</em> <em>S. aureus</em> in rabbits and potential transmission events between rabbits and humans.
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14
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Zhao H, Chen G, Sang L, Deng Y, Gao L, Yu Y, Liu J. Mitochondrial citrate synthase plays important roles in anthocyanin synthesis in petunia. Plant Sci 2021; 305:110835. [PMID: 33691969 DOI: 10.1016/j.plantsci.2021.110835] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/26/2021] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
Anthocyanins are important flavonoid pigments in plants. Malonyl CoA is an important intermediate in anthocyanin synthesis, and citrate, formed by citrate synthase (CS) catalysing oxaloacetate, is the precursor for the formation of malonyl-CoA. CS is composed of two isoforms, mitochondrial citrate synthase (mCS), a key enzyme of the tricarboxylic acid (TCA) cycle, and citrate synthase (CSY) localizated in microbodies in plants. However, no CS isoform involvement in anthocyanin synthesis has been reported. In this study, we identified the entire CS family in petunia (Petunia hybrida): PhmCS, PhCSY1 and PhCSY2. We obtained petunia plants silenced for the three genes. PhmCS silencing resulted in abnormal development of leaves and flowers. The contents of citrate and anthocyanins were significantly reduced in flowers in PhmCS-silenced plants. However, silencing of PhCSY1 and/or PhCSY2 did not cause a visible phenotype change in petunia. These results showed that PhmCS is involved in anthocyanin synthesis and the development of leaves and flowers, and that the citrate involved in anthocyanin synthesis mainly derived from mitochondria rather than microbodies in petunia.
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Affiliation(s)
- Huina Zhao
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; College of Horticulture, South China Agricultural University, Guangzhou 510642, China; Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou, 510642, China.
| | - Guoju Chen
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
| | - Lina Sang
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
| | - Ying Deng
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China.
| | - Lili Gao
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China.
| | - Yixun Yu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou, 510642, China.
| | - Juanxu Liu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China.
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15
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Li Z, Sang L, Liu P, Yue Z, Fuhrer MS, Xue Q, Wang X. Atomically Thin Superconductors. Small 2021; 17:e1904788. [PMID: 32363776 DOI: 10.1002/smll.201904788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 12/18/2019] [Accepted: 03/04/2020] [Indexed: 06/11/2023]
Abstract
In recent years, atomically thin superconductors, including atomically thin elemental superconductors, single layer FeSe films, and few-layer cuprate superconductors, have been studied extensively. This hot research field is mainly driven by the discovery of significant superconductivity enhancement and high-temperature interface superconductivity in single-layer FeSe films epitaxially grown on SrTiO3 substrates in 2012. This study has attracted tremendous research interest and generated more studies focusing on further enhancing superconductivity and finding the origin of the superconductivity. A few years later, research on atomically thin superconductors has extended to cuprate superconductors, unveiling many intriguing properties that have neither been proposed or observed previously. These new discoveries challenge the current theory regarding the superconducting mechanism of unconventional superconductors and indicate new directions on how to achieve high-transition-temperature superconductors. Herein, this exciting recent progress is briefly discussed, with a focus on the recent progress in identifying new atomically thin superconductors.
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Affiliation(s)
- Zhi Li
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2525, Australia
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, NSW, 2525, Australia
| | - Lina Sang
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2525, Australia
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, NSW, 2525, Australia
| | - Peng Liu
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2525, Australia
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, NSW, 2525, Australia
| | - Zengji Yue
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2525, Australia
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, NSW, 2525, Australia
| | - Michael S Fuhrer
- School of Physics and Astronomy, Monash University, Victoria, 3800, Australia
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Victoria, 3800, Australia
| | - Qikun Xue
- Collaborative Innovation Center of Quantum Matter, Beijing, 100871, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing, 100084, China
| | - Xiaolin Wang
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2525, Australia
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, NSW, 2525, Australia
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16
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Naren D, Yan T, Gong Y, Huang J, Zhang D, Sang L, Zheng X, Li Y. High Wilms' tumor 1 associating protein expression predicts poor prognosis in acute myeloid leukemia and regulates m 6A methylation of MYC mRNA. J Cancer Res Clin Oncol 2020; 147:33-47. [PMID: 32880751 DOI: 10.1007/s00432-020-03373-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 08/20/2020] [Indexed: 02/05/2023]
Abstract
PURPOSE Acute myeloid leukemia (AML) is a heterogenous disease and the survival of AML patients is largely attributed to the improvement of supportive treatment. Wilms' tumor 1-associated protein (WTAP) is a nuclear protein functions in many physiological and pathological processes. Although its expression and function in many malignant diseases have been reported, its prognostic and epigenetic roles in AML are largely unknown. METHODS Peripheral blood or bone marrow samples were collected from AML patients. The WTAP expression was detected by western blot. WTAP expression level and patients clinical features were analyzed using statistical methods. WTAP knockdown AML cells were constructed. The experiments on proliferation, tumorigenic ability, cell cycle, and apoptosis were performed. Transcriptome sequencing was performed and analyzed. M6A methylation level was measured and m6A-RIP was performed to quantify m6A methylation level of MYC mRNA. RNA stability assay was performed to measure the half-life of mRNA. RESULTS WTAP was overexpressed in AML patients and was an independent poor-risk factor in AML (p = 0.0140). Moreover, we found that WTAP regulated proliferation, tumorigenesis, cell cycle, and differentiation of AML cells. Furthermore, WTAP made AML cells resistant to daunorubicin. In further investigations, m6A methylation level was downregulated when knocking down WTAP, and c-Myc was upregulated due to the decreased m6A methylation of MYC mRNA. CONCLUSION High WTAP expression predicts poor prognosis in AML and WTAP plays an epigenetic role in AML.
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Affiliation(s)
- Duolan Naren
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China
| | - Tianyou Yan
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China
| | - Yuping Gong
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China.
| | - Jingcao Huang
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China
| | - Dan Zhang
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China
| | - Lina Sang
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China
| | - Xue Zheng
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China
| | - Yarong Li
- Department of Hematology, Hematology Research Laboratory, West China Hospital, Sichuan University, 37# GuoXue Xiang, Chengdu, 610041, Sichuan Province, China
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17
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Jiang L, Li LY, Wu AH, Jiang RM, Zheng RQ, Li XY, Sang L, Pan C, Zheng X, Zhong M, Zhang W, Guan XD, Tong ZH, Du B, Qiu HB. [2019 novel coronavirus: appropriate rather than undue protection]. Zhonghua Nei Ke Za Zhi 2020; 59:662-664. [PMID: 32838496 DOI: 10.3760/cma.j.cn112138-20200303-00172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- L Jiang
- Department of Critical Care Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - L Y Li
- Department of Healthcare-Associated Infection Management and Disease Prevention and Control, Peking University First Hospital, Beijing 100034, China
| | - A H Wu
- Center of Healthcare-associated Infection Control, Xiangya Hospital, Central South University, Changsha 410008, China
| | - R M Jiang
- Second Department of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - R Q Zheng
- Department of Critical Care Medicine, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - X Y Li
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - L Sang
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Institute of Respiratory Health, Guangzhou 510120, China
| | - C Pan
- Department of Critical Care Medicine, Zhongda Hospital, Southeast University, Nanjing 210009, China
| | - X Zheng
- Department of Critical Care Medicine, The First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China
| | - M Zhong
- Department of Critical Care Medicine, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - W Zhang
- Department of Emergency, the 900th Hospital of Joint Service Corps of Chinese PLA, Fuzhou 350025, China
| | - X D Guan
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Z H Tong
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - B Du
- Department of Medical Intensive Care Unit, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - H B Qiu
- Department of Critical Care Medicine, Zhongda Hospital, Southeast University, Nanjing 210009, China
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18
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Zhao H, Zhong S, Sang L, Zhang X, Chen Z, Wei Q, Chen G, Liu J, Yu Y. PaACL silencing accelerates flower senescence and changes the proteome to maintain metabolic homeostasis in Petunia hybrida. J Exp Bot 2020; 71:4858-4876. [PMID: 32364241 PMCID: PMC7475263 DOI: 10.1093/jxb/eraa208] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/25/2020] [Indexed: 06/07/2023]
Abstract
Cytosolic acetyl-CoA is an intermediate of the synthesis of most secondary metabolites and the source of acetyl for protein acetylation. The formation of cytosolic acetyl-CoA from citrate is catalysed by ATP-citrate lyase (ACL). However, the function of ACL in global metabolite synthesis and global protein acetylation is not well known. Here, four genes, PaACLA1, PaACLA2, PaACLB1, and PaACLB2, which encode the ACLA and ACLB subunits of ACL in Petunia axillaris, were identified as the same sequences in Petunia hybrida 'Ultra'. Silencing of PaACLA1-A2 and PaACLB1-B2 led to abnormal leaf and flower development, reduced total anthocyanin content, and accelerated flower senescence in petunia 'Ultra'. Metabolome and acetylome analysis revealed that PaACLB1-B2 silencing increased the content of many downstream metabolites of acetyl-CoA metabolism and the levels of acetylation of many proteins in petunia corollas. Mechanistically, the metabolic stress induced by reduction of acetyl-CoA in PaACL-silenced petunia corollas caused global and specific changes in the transcriptome, the proteome, and the acetylome, with the effect of maintaining metabolic homeostasis. In addition, the global proteome and acetylome were negatively correlated under acetyl-CoA deficiency. Together, our results suggest that ACL acts as an important metabolic regulator that maintains metabolic homeostasis by promoting changes in the transcriptome, proteome. and acetylome.
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Affiliation(s)
- Huina Zhao
- College of Horticulture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou, China
| | - Shiwei Zhong
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Lina Sang
- College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Xinyou Zhang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Zeyu Chen
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Qian Wei
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Guoju Chen
- College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Juanxu Liu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Yixun Yu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou, China
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19
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Zhao H, Zhong S, Sang L, Zhang X, Chen Z, Wei Q, Chen G, Liu J, Yu Y. Corrigendum: PaACL silencing accelerates flower senescence and changes proteome to maintain metabolic homeostasis in Petunia hybrida. J Exp Bot 2020; 71:5113. [PMID: 32761246 PMCID: PMC8604264 DOI: 10.1093/jxb/eraa228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- Huina Zhao
- College of Horticulture, South China Agricultural
University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and
Utilization of Forest Plant Germplasm, College of Forestry
and Landscape Architecture, South China Agricultural
University, Guangzhou, China
- Lingnan Guangdong Laboratory of Modern
Agriculture, Guangzhou, China
| | - Shiwei Zhong
- Guangdong Key Laboratory for Innovative Development and
Utilization of Forest Plant Germplasm, College of Forestry
and Landscape Architecture, South China Agricultural
University, Guangzhou, China
| | - Lina Sang
- College of Horticulture, South China Agricultural
University, Guangzhou, China
| | - Xinyou Zhang
- Guangdong Key Laboratory for Innovative Development and
Utilization of Forest Plant Germplasm, College of Forestry
and Landscape Architecture, South China Agricultural
University, Guangzhou, China
| | - Zeyu Chen
- Guangdong Key Laboratory for Innovative Development and
Utilization of Forest Plant Germplasm, College of Forestry
and Landscape Architecture, South China Agricultural
University, Guangzhou, China
| | - Qian Wei
- Guangdong Key Laboratory for Innovative Development and
Utilization of Forest Plant Germplasm, College of Forestry
and Landscape Architecture, South China Agricultural
University, Guangzhou, China
| | - Guoju Chen
- College of Horticulture, South China Agricultural
University, Guangzhou, China
| | - Juanxu Liu
- Guangdong Key Laboratory for Innovative Development and
Utilization of Forest Plant Germplasm, College of Forestry
and Landscape Architecture, South China Agricultural
University, Guangzhou, China
| | - Yixun Yu
- Guangdong Key Laboratory for Innovative Development and
Utilization of Forest Plant Germplasm, College of Forestry
and Landscape Architecture, South China Agricultural
University, Guangzhou, China
- Lingnan Guangdong Laboratory of Modern
Agriculture, Guangzhou, China
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20
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Abstract
The spin-gapless semiconductors (SGSs) are a new class of zero-gap materials which have fully spin polarized electrons and holes. They bridge the zero-gap materials and the half-metals. The band structures of the SGSs can have two types of energy dispersion: Dirac linear dispersion and parabolic dispersion. The Dirac-type SGSs exhibit fully spin polarized Dirac cones, and offer a platform for massless and fully spin polarized spintronics as well as dissipationless edge states via the quantum anomalous Hall effect. With fascinating spin and charge states, they hold great potential for spintronics. There have been tremendous efforts worldwide to find suitable candidates for SGSs. In particular, there is an increasing interest in searching for Dirac type SGSs. In the past decade, a large number of Dirac or parabolic type SGSs have been predicted by density functional theory, and some parabolic SGSs have been experimentally demonstrated. The SGSs hold great potential for spintronics, electronics, and optoelectronics with high speed and low-energy consumption. Here, both the Dirac and the parabolic types of SGSs in different material systems are reviewed and the concepts of the SGS, novel spin and charge states, and the potential applications of SGSs in next-generation spintronic devices are outlined.
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Affiliation(s)
- Zengji Yue
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW, 2522, Australia
- ARC Centre of Excellence for Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, North Wollongong, NSW, 2522, Australia
| | - Zhi Li
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW, 2522, Australia
- ARC Centre of Excellence for Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, North Wollongong, NSW, 2522, Australia
| | - Lina Sang
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW, 2522, Australia
- ARC Centre of Excellence for Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, North Wollongong, NSW, 2522, Australia
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW, 2522, Australia
- ARC Centre of Excellence for Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, North Wollongong, NSW, 2522, Australia
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Yang G, Sang L, Li M, Kazi Nazrul Islam SM, Yue Z, Liu L, Li J, Mitchell DRG, Ye N, Wang X. Enhancing the Thermoelectric Performance of Polycrystalline SnSe by Decoupling Electrical and Thermal Transport through Carbon Fiber Incorporation. ACS Appl Mater Interfaces 2020; 12:12910-12918. [PMID: 32101408 DOI: 10.1021/acsami.0c00873] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thermoelectric (TE) materials have attracted extensive interest because of their ability to achieve direct heat-to-electricity conversion. They provide an appealing renewable energy source in a variety of applications by harvesting waste heat. The record-breaking figure of merit reported for single crystal SnSe has stimulated related research on its polycrystalline counterpart. Boosting the TE conversion efficiency requires increases in the power factor and decreases in thermal conductivity. It is still a big challenge, however, to optimize these parameters independently because of their complex interrelationships. Herein, we propose an innovative approach to decouple electrical and thermal transport by incorporating carbon fiber (CF) into polycrystalline SnSe. We show that the incorporation of highly conductive CF can successfully enhance the electrical conductivity, while greatly reducing the thermal conductivity of polycrystalline SnSe. As a result, a high TE figure-of-merit (zT) of 1.3 at 823 K is obtained in p-type SnSe/CF composite polycrystalline materials. Furthermore, SnSe samples incorporated with CFs exhibit superior mechanical properties, which are favorable for device fabrication applications. Our results indicate that the dispersion of CF can be a good way to greatly improve both TE and mechanical performance.
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Affiliation(s)
- Guangsai Yang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China
| | - Lina Sang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
- Australian Research Council Centre of Excellence in Future Low-Energy Electronics Technologies, University of Wollongong, Wollongong, 2500 Australia
| | - Meng Li
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Sheik Md Kazi Nazrul Islam
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Zengji Yue
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
- Australian Research Council Centre of Excellence in Future Low-Energy Electronics Technologies, University of Wollongong, Wollongong, 2500 Australia
| | - Liqiang Liu
- Faculty of Materials Engineering, Shandong Jianzhu University, Jinan, Shandong 250101, PR China
| | - Jianing Li
- Faculty of Materials Engineering, Shandong Jianzhu University, Jinan, Shandong 250101, PR China
| | - David R G Mitchell
- Electron Microscopy Centre, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Ning Ye
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales 2500, Australia
- Australian Research Council Centre of Excellence in Future Low-Energy Electronics Technologies, University of Wollongong, Wollongong, 2500 Australia
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Liu J, Zhang S, Li M, Sang L, Li Z, Cheng Z, Zhao W, Feng J, Li C, Zhang P, Dou S, Wang X, Zhou L. Boosting Superconducting Properties of Fe(Se, Te) via Dual-Oscillation Phenomena Induced by Fluorine Doping. ACS Appl Mater Interfaces 2019; 11:18825-18832. [PMID: 31007006 DOI: 10.1021/acsami.9b02469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fluorine-doped Fe(Se, Te) has been successfully synthesized using the melting method. A dual-oscillation effect was found in the F-doped sample, which combined both microstructural oscillation and chemical compositional oscillation. The microstructural oscillation could be attributed to alternate growth of tetragonal β-Fe(Se, Te) and hexagonal δ-Fe(Se, Te), which formed a pearlite-like structure and led to the enhancement of δ l flux pinning due to the alternating distributed nonsuperconducting δ-Fe(Se, Te) phase. The chemical compositional oscillations in β-Fe(Se, Te) phase were because of the inhomogeneously distributed Se and Te, which changes the pinning mechanism from surface pinning in the undoped sample to Δκ pinning in the 5% F-doped one. As a result, the critical current, upper critical field, and thermally activated flux-flow activation energy of FeSe0.45Te0.5F0.05 were enhanced by 7, 2, and 3 times, respectively. Our work revealed the physical insights into F-doping resulting in high-performance Fe(Se, Te) superconductors and inspired a new approach to optimize superconductivities in iron-based superconductors through phase and element manipulations.
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Affiliation(s)
- Jixing Liu
- School of Materials Science and Engineering , Northeastern University , Shenyang 110819 , China
- Superconducting Materials Research Center , Northwest Institute for Nonferrous Metal Research , Xi'an 710016 , China
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Shengnan Zhang
- Superconducting Materials Research Center , Northwest Institute for Nonferrous Metal Research , Xi'an 710016 , China
| | - Meng Li
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Lina Sang
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Zhi Li
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Zhenxiang Cheng
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Weiyao Zhao
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Jianqing Feng
- Superconducting Materials Research Center , Northwest Institute for Nonferrous Metal Research , Xi'an 710016 , China
| | - Chengshan Li
- School of Materials Science and Engineering , Northeastern University , Shenyang 110819 , China
- Superconducting Materials Research Center , Northwest Institute for Nonferrous Metal Research , Xi'an 710016 , China
| | - Pingxiang Zhang
- School of Materials Science and Engineering , Northeastern University , Shenyang 110819 , China
- Superconducting Materials Research Center , Northwest Institute for Nonferrous Metal Research , Xi'an 710016 , China
| | - Shixue Dou
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, Faculty of Engineering, Australian Institute for Innovative Materials , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Lian Zhou
- School of Materials Science and Engineering , Northeastern University , Shenyang 110819 , China
- Superconducting Materials Research Center , Northwest Institute for Nonferrous Metal Research , Xi'an 710016 , China
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Wu X, Sang L, Gong Y. N6-methyladenine RNA modification and cancers. Am J Cancer Res 2018; 8:1957-1966. [PMID: 30416848 PMCID: PMC6220143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 09/28/2018] [Indexed: 06/09/2023] Open
Abstract
Similar to DNA methylation modifications, N6-methyladenine (m6A) has been identified as a dynamic and reversible modification in messenger RNA (mRNA), regulated by m6A methyltransferases and demethylases. m6A modifications regulate gene expressions and play vital roles in many life processes. Some proteins serve as m6A-binding proteins to perform the m6A-modified biological functions. Recently, m6A modifications have been reported to play critical roles in human cancers, including lung cancer, brain tumor, leukemia, and many others. In this comprehensive review, we have described the roles played by m6A modifications of mRNA in the development of cancers. These modifications appear to have an oncogenic role in some cancers while a tumor-suppressor role in others. Therefore, it would be of great significance to study the biological functions of genes regulated by m6A in different cancers and identify the key m6A target genes to understand the potential mechanism underlying the pathogenesis of cancer.
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Affiliation(s)
- Xia Wu
- Department of Hematology, West China Hospital, Sichuan University Chengdu, Sichuan Province, China
| | - Lina Sang
- Department of Hematology, West China Hospital, Sichuan University Chengdu, Sichuan Province, China
| | - Yuping Gong
- Department of Hematology, West China Hospital, Sichuan University Chengdu, Sichuan Province, China
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Yao QJ, Sang L, Lin M, Yin X, Dong W, Gong Y, Zhou BO. Mettl3-Mettl14 methyltransferase complex regulates the quiescence of adult hematopoietic stem cells. Cell Res 2018; 28:952-954. [PMID: 30006613 PMCID: PMC6123394 DOI: 10.1038/s41422-018-0062-2] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/07/2018] [Accepted: 06/11/2018] [Indexed: 02/05/2023] Open
Affiliation(s)
- Qi Jason Yao
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 320 Yueyang Road, 200031, Shanghai, China
| | - Lina Sang
- Department of Hematology, West China Hospital, Sichuan University, 610041, Sichuan, China
| | - Minghui Lin
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 320 Yueyang Road, 200031, Shanghai, China
| | - Xiujuan Yin
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 320 Yueyang Road, 200031, Shanghai, China
| | - Wenjie Dong
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 320 Yueyang Road, 200031, Shanghai, China
| | - Yuping Gong
- Department of Hematology, West China Hospital, Sichuan University, 610041, Sichuan, China.
| | - Bo O Zhou
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 320 Yueyang Road, 200031, Shanghai, China.
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Cao Q, Yun FF, Sang L, Xiang F, Liu G, Wang X. Defect introduced paramagnetism and weak localization in two-dimensional metal VSe 2. Nanotechnology 2017; 28:475703. [PMID: 28952467 DOI: 10.1088/1361-6528/aa8f6c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have carried out a detailed investigation of the magnetism, valence state, and magnetotransport in VSe2 bulk single crystals, as well as in laminates obtained by mechanical exfoliation. In sharp contrast to the ferromagnetic behavior reported previously, here, no ferromagnetism could be detected for VSe2 single crystal and laminate from room temperature down to 2 K. Neither did we find the Curie paramagnetism expected due to the 3d 1 odd-electronic configuration of covalent V4+ ions. Rather, intrinsic VSe2 is a non-magnetic alloy without local moment. Only a weak paramagnetic contribution introduced by defects is noticeable below 50 K. A weak localization effect due to defects was also observed in VSe2 single crystals for the first time.
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Affiliation(s)
- Qiang Cao
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales, 2500, Australia. School of Physics and Engineering, Qufu Normal University, Qufu 273165, People's Republic of China
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26
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Qiu W, Ma Z, Patel D, Sang L, Cai C, Shahriar Al Hossain M, Cheng Z, Wang X, Dou SX. The Interface Structure of FeSe Thin Film on CaF 2 Substrate and its Influence on the Superconducting Performance. ACS Appl Mater Interfaces 2017; 9:37446-37453. [PMID: 29019397 DOI: 10.1021/acsami.7b11853] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The investigations into the interfaces in iron selenide (FeSe) thin films on various substrates have manifested the great potential of showing high-temperature-superconductivity in this unique system. In present work, we obtain FeSe thin films with a series of thicknesses on calcium fluoride (CaF2) (100) substrates and glean the detailed information from the FeSe/CaF2 interface by using scanning transmission electron microscopy (STEM). Intriguingly, we have found the universal existence of a calcium selenide (CaSe) interlayer with a thickness of approximate 3 nm between FeSe and CaF2 in all the samples, which is irrelevant to the thickness of FeSe layers. A slight Se deficiency occurs in the FeSe layer due to the formation of CaSe interlayer. This Se deficiency is generally negligible except for the case of the ultrathin FeSe film (8 nm in thickness), in which the stoichiometric deviation from FeSe is big enough to suppress the superconductivity. Meanwhile, in the overly thick FeSe layer (160 nm in thickness), vast precipitates are found and recognized as Fe-rich phases, which brings about degradation in superconductivity. Consequently, the thickness dependence of superconducting transition temperature (Tc) of FeSe thin films is investigated and one of our atmosphere-stable FeSe thin film (127 nm) possesses the highest Tconset/Tczero as 15.1 K/13.4 K on record to date in the class of FeSe thin film with practical thickness. Our results provide a new perspective for exploring the mechanism of superconductivity in FeSe thin film via high-resolution STEM. Moreover, approaches that might improve the quality of FeSe/CaF2 interfaces are also proposed for further enhancing the superconducting performance in this system.
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Affiliation(s)
- Wenbin Qiu
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Squires Way, North Wollongong, New South Wales 2500, Australia
- Shanghai Key Laboratory of High Temperature Superconductors, Physics Department, Shanghai University , Shanghai 200444, People's Republic of China
| | - Zongqing Ma
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, People's Republic of China
| | - Dipak Patel
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Squires Way, North Wollongong, New South Wales 2500, Australia
| | - Lina Sang
- Shanghai Key Laboratory of High Temperature Superconductors, Physics Department, Shanghai University , Shanghai 200444, People's Republic of China
| | - Chuanbing Cai
- Shanghai Key Laboratory of High Temperature Superconductors, Physics Department, Shanghai University , Shanghai 200444, People's Republic of China
| | - Mohammed Shahriar Al Hossain
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Squires Way, North Wollongong, New South Wales 2500, Australia
| | - Zhenxiang Cheng
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Squires Way, North Wollongong, New South Wales 2500, Australia
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Squires Way, North Wollongong, New South Wales 2500, Australia
| | - Shi Xue Dou
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Squires Way, North Wollongong, New South Wales 2500, Australia
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27
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Sang L, Sun L, Li Y, Chen S, Sun H, Wan D, Xie X, Zhang J, Yan C. [The clinical observation of hemorrhagic cystitis following hematopoietic stem cell transplantation]. Zhonghua Xue Ye Xue Za Zhi 2015; 35:747-9. [PMID: 25152127 DOI: 10.3760/cma.j.issn.0253-2727.2014.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Lina Sang
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Ling Sun
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yingmei Li
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Shengmei Chen
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Hui Sun
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Dingming Wan
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xinsheng Xie
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Jing Zhang
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Chunyan Yan
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Sang L, Yang W, Han L, Liang A, Hua G, Xiong J, Huo L, Yang L. An immunological method to screen sex-specific proteins of bovine sperm. J Dairy Sci 2011; 94:2060-70. [DOI: 10.3168/jds.2010-3350] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Accepted: 12/14/2010] [Indexed: 12/15/2022]
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Guo X, Jia Z, Zhang P, Yang S, Wu W, Sang L, Luo Y, Lu X, Dai H, Zeng Z, Wang W. Impact of mode of transportation on dyslipidaemia in working people in Beijing. Br J Sports Med 2009; 43:928-31. [DOI: 10.1136/bjsm.2008.049171] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Feng X, Qiu G, Wang S, Sang L. Distribution and speciation of mercury in surface waters in mercury mining areas in Wanshan, Southwestern China. ACTA ACUST UNITED AC 2003. [DOI: 10.1051/jp4:20030339] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Wu L, Timmers C, Maiti B, Saavedra HI, Sang L, Chong GT, Nuckolls F, Giangrande P, Wright FA, Field SJ, Greenberg ME, Orkin S, Nevins JR, Robinson ML, Leone G. The E2F1-3 transcription factors are essential for cellular proliferation. Nature 2001; 414:457-62. [PMID: 11719808 DOI: 10.1038/35106593] [Citation(s) in RCA: 482] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The retinoblastoma tumour suppressor (Rb) pathway is believed to have a critical role in the control of cellular proliferation by regulating E2F activities. E2F1, E2F2 and E2F3 belong to a subclass of E2F factors thought to act as transcriptional activators important for progression through the G1/S transition. Here we show, by taking a conditional gene targeting approach, that the combined loss of these three E2F factors severely affects E2F target expression and completely abolishes the ability of mouse embryonic fibroblasts to enter S phase, progress through mitosis and proliferate. Loss of E2F function results in an elevation of p21Cip1 protein, leading to a decrease in cyclin-dependent kinase activity and Rb phosphorylation. These findings suggest a function for this subclass of E2F transcriptional activators in a positive feedback loop, through down-modulation of p21Cip1, that leads to the inactivation of Rb-dependent repression and S phase entry. By targeting the entire subclass of E2F transcriptional activators we provide direct genetic evidence for their essential role in cell cycle progression, proliferation and development.
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Affiliation(s)
- L Wu
- Division of Human Cancer Genetics, Department of Molecular Virology, Immunology and Medical Genetics, and Department of Molecular Genetics, The Ohio State University, Columbus, Ohio 43210, USA
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Abstract
Aberrant expression of developmentally silenced genes, characteristic of tumor cells and regenerating tissue, is highly correlated with increased cell proliferation. By modeling this process in vitro in synthetic nuclei, we find that DNA replication leads to deregulation of established developmental expression patterns. Chromatin assembly in the presence of adult mouse liver nuclear extract mediates developmental stage-specific silencing of the tumor marker gene alpha-fetoprotein (AFP). Replication of silenced AFP chromatin in synthetic nuclei depletes sequence-specific transcription repressors, thereby disrupting developmentally regulated repression. Hepatoma-derived factors can target partial derepression of AFP, but full transcription activation requires DNA replication. Thus, unscheduled entry into S phase directly mediates activation of a developmentally silenced gene by (i) depleting developmental stage-specific transcription repressors and (ii) facilitating binding of transactivators.
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Affiliation(s)
- A J Crowe
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati, Cincinnati, Ohio 45267-0524, USA
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Crowe AJ, Sang L, Li KK, Lee KC, Spear BT, Barton MC. Hepatocyte nuclear factor 3 relieves chromatin-mediated repression of the alpha-fetoprotein gene. J Biol Chem 1999; 274:25113-20. [PMID: 10455192 DOI: 10.1074/jbc.274.35.25113] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The alpha-fetoprotein gene (AFP) is tightly regulated at the tissue-specific level, with expression confined to endoderm-derived cells. We have reconstituted AFP transcription on chromatin-assembled DNA templates in vitro. Our studies show that chromatin assembly is essential for hepatic-specific expression of the AFP gene. While nucleosome-free AFP DNA is robustly transcribed in vitro by both cervical (HeLa) and hepatocellular (HepG2) carcinoma extracts, the general transcription factors and transactivators present in HeLa extract cannot relieve chromatin-mediated repression of AFP. In contrast, preincubation with either HepG2 extract or HeLa extract supplemented with recombinant hepatocyte nuclear factor 3 alpha (HNF3alpha), a hepatic-enriched factor expressed very early during liver development, is sufficient to confer transcriptional activation on a chromatin-repressed AFP template. Transient transfection studies illustrate that HNF3alpha can activate AFP expression in a non-liver cellular environment, confirming a pivotal role for HNF3alpha in establishing hepatic-specific gene expression. Restriction enzyme accessibility assays reveal that HNF3alpha promotes the assembly of an open chromatin structure at the AFP promoter. Combined, these functional and structural data suggest that chromatin assembly establishes a barrier to block inappropriate expression of AFP in non-hepatic tissues and that tissue-specific factors, such as HNF3alpha, are required to alleviate the chromatin-mediated repression.
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Affiliation(s)
- A J Crowe
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati, Cincinnati, Ohio 45267-0524, USA
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