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Li J, Wang T, Dang D. S100A6 could not promote the differentiation of Calu-6 lung cancer cell line. Ann Med Surg (Lond) 2024; 86:2644-2650. [PMID: 38694326 PMCID: PMC11060216 DOI: 10.1097/ms9.0000000000001865] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 02/14/2024] [Indexed: 05/04/2024] Open
Abstract
Background Our previous study demonstrated that S100 calcium binding protein A6 (S100A6) impairs tumorigenesis by Calu-6 lung cancer cells, as well as inhibit their growth. However, the role that S100A6 plays in tumor cell differentiation has not been previously explored. This study aimed to confirm the effect of S100A6 on the direction of differentiation in the human lung cancer cell linem Calu-6m based on our previous published research. Materials and methods A S100A6-overexpressing lentiviral vector was successfully constructed in our previous study. Nude mouse tumorigenicity was then applied successfully, and 15 mice were divided into three groups (Calu-6, Calu-6/neo, Calu-6/S100A6). After 5 weeks, we detected lung cancer markers with immunohistochemistry in mice tumor tissues, including the adenocarcinoma markers, TTF-1 and NapsinA, the squamous cell carcinoma markers, P40, CK5/6 and P63, and the small cell lung cancer markers CD56, Syn, CgA, TTF-1, CK, and Ki-67. Differences among the three groups were statistically compared. Results All the above-mentioned markers were positive in the tumor tissues of all three groups, and there were no significant differences. Conclusion S100A6 cannot promote differentiation of the undifferentiated human lung cancer cell line, Calu-6, into adenocarcinoma, squamous, or small cell carcinoma cell lines.
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Affiliation(s)
- Jie Li
- Department of Respiratory Medicine
| | | | - Dan Dang
- Department of Intensive Care Medicine, Xi’an People’s Hospital, Xi’an, People’s Republic of China
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Chen X, Yuan L, Jiang S, Gu X, Lei X, Hu L, Xiao T, Zhu Y, Dang D, Li W, Cao Y, Du L, Lee SK, Chen C, Zhou W, Zhou J. Synergistic effects of achieving perinatal interventions on bronchopulmonary dysplasia in preterm infants. Eur J Pediatr 2024; 183:1711-1721. [PMID: 38231237 DOI: 10.1007/s00431-023-05355-9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 01/18/2024]
Abstract
To investigate the effect of perinatal interventions on the risk of severe BPD (sBPD) and death in extremely preterm infants (EPIs) and their synergistic effects. This was a secondary analysis of the prospective cohort Chinese Neonatal Network (CHNN). Infants with a birth weight of 500 to 1250 g or 24-28 weeks completed gestational age were recruited. The impacts and the synergistic effects of six evidence-based perinatal interventions on the primary outcomes of sBPD and death were assessed by univariate and multivariable logistic regression modeling. Totally, 6568 EPIs were finally enrolled. Antenatal corticosteroid (adjusted OR, aOR, 0.74; 95%CI, 0.65-083), birth in centers with tertiary NICU (aOR, 0.64; 95%CI, 0.57-0.72), preventing intubation in the delivery room (aOR, 0.65; 95%CI, 0.58-0.73), early caffeine therapy (aOR, 0.59; 95%CI, 0.52-0.66), and early extubating (aOR, 0.42; 95%CI 0.37-0.47), were strongly associated with a lower risk of sBPD and death while early surfactant administration was associated with a lower risk of death (aOR, 0.84; 95%CI, 0.72, 0.98). Compared with achieving 0/1 perinatal interventions, achieving more than one intervention was associated with decreased rates (46.6% in 0/1 groups while 38.5%, 29.6%, 22.2%, 16.2%, and 11.7% in 2/3/4/5/6-intervention groups respectively) and reduced risks of sBPD/death with aORs of 0.76(0.60, 0.96), 0.55(0.43, 0.69), 0.38(0.30, 0.48), 0.28(0.22, 0.36), and 0.20(0.15, 0.27) in 2, 3, 4, 5, and 6 intervention groups respectively. Subgroup analyses showed consistent results. CONCLUSION Six perinatal interventions can effectively reduce the risk of sBPD and death in a synergistic form. WHAT IS KNOWN • Bronchopulmonary dysplasia (BPD) is a multifactorial chronic lung disease associated with prematurity. The effective management of BPD requires a comprehensive set of interventions. However, the extent to which these interventions can mitigate the risk of severe outcomes, such as severe BPD or mortality, or if they possess synergistic effects remains unknown. WHAT IS NEW • The implementation of various perinatal interventions, such as prenatal steroids, birth in centers with tertiary NICU, early non-Invasive respiratory support, surfactant administration within 2 hours after birth, early caffeine initiation within 3 days, and early extubation within 7 days after birth has shown promising results in the prevention of severe bronchopulmonary dysplasia (BPD) or mortality in extremely preterm infants. Moreover, these interventions have demonstrated synergistic effects when implemented in combination.
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Affiliation(s)
- Xiang Chen
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China
| | - Lin Yuan
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China
| | - Siyuan Jiang
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China
| | - Xinyue Gu
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China
| | - Xiaoping Lei
- Division of Neonatology, Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Liyuan Hu
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China
| | - Tiantian Xiao
- Department of Neonatology, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yanping Zhu
- Department of Neonatology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Wenli Li
- Department of Neonatology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yun Cao
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China
| | - Lizhong Du
- Neonatal Intensive Care Unit, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou, China
| | - Shoo K Lee
- Maternal-Infant Care Research Centre and Department of Pediatrics, Mount Sinai Hospital, Toronto, ON, Canada
| | - Chao Chen
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China
| | - Wenhao Zhou
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China.
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China.
| | - Jianguo Zhou
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China.
- NHC Key Laboratory of Neonatal Diseases, Fudan University, Children's Hospital of Fudan University, Shanghai, China.
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Wei J, Meng Z, Li Z, Dang D, Wu H. New insights into intestinal macrophages in necrotizing enterocolitis: the multi-functional role and promising therapeutic application. Front Immunol 2023; 14:1261010. [PMID: 37841247 PMCID: PMC10568316 DOI: 10.3389/fimmu.2023.1261010] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/13/2023] [Indexed: 10/17/2023] Open
Abstract
Necrotizing enterocolitis (NEC) is an inflammatory intestinal disease that profoundly affects preterm infants. Currently, the pathogenesis of NEC remains controversial, resulting in limited treatment strategies. The preterm infants are thought to be susceptible to gut inflammatory disorders because of their immature immune system. In early life, intestinal macrophages (IMφs), crucial components of innate immunity, demonstrate functional plasticity and diversity in intestinal development, resistance to pathogens, maintenance of the intestinal barrier, and regulation of gut microbiota. When the stimulations of environmental, dietary, and bacterial factors interrupt the homeostatic processes of IMφs, they will lead to intestinal disease, such as NEC. This review focuses on the IMφs related pathogenesis in NEC, discusses the multi-functional roles and relevant molecular mechanisms of IMφs in preterm infants, and explores promising therapeutic application for NEC.
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Affiliation(s)
- Jiaqi Wei
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Zhaoli Meng
- Department of Translational Medicine Research Institute, First Hospital of Jilin University, Changchun, China
| | - Zhenyu Li
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Dan Dang
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Hui Wu
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
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Qi M, Dang D, Yang X, Wang J, Zhang H, Liang W. Surface acoustic wave manipulation of bioparticles. Soft Matter 2023. [PMID: 37212436 DOI: 10.1039/d3sm00457k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The introduction of surface acoustic waves (SAWs) into lab-on-a-chip microfluidic systems has contributed to the development of a new cutting-edge technology-SAW-based micro/nano manipulation. Recently, the SAW technology has emerged as an important tool for manipulating micro/nano particles/cell populations by virtue of its simplicity, biocompatibility, non-invasiveness, scalability, and versatility. In custom-designed acoustic fields, this technology can be used to manipulate cells, bacteria, exosomes, and even worms precisely, and it has been used in applications such as biomedical and point-of-care diagnostic systems. In this review paper, we start by providing a comprehensive overview of the fundamental working principle and numerical simulation of SAW-based manipulation. Then, we introduce the recent advancements in the manipulation of organisms based on standing and traveling SAWs, including separation, concentration, and transport. At the end of the review, we discuss the current challenges to and future prospects of SAW-based manipulation. The conclusion is that the SAW technology will open up a new frontier in the microfluidics field and contribute significantly to the development of bioengineering research and applications.
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Affiliation(s)
- Meili Qi
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China.
| | - Dan Dang
- School of Sciences, Shenyang Jianzhu University, Shenyang 110168, China.
| | - Xieliu Yang
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China.
| | - Junhai Wang
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China.
| | - Hemin Zhang
- Department of Neurology, The People's Hospital of Liaoning Province, Shenyang 110016, China.
| | - Wenfeng Liang
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China.
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Li Z, Mu X, Dang D, Lv X, Si S, Guo Y, Wu H. Comparison of lung ultrasound scores with clinical models for predicting bronchopulmonary dysplasia. Eur J Pediatr 2023; 182:1697-1705. [PMID: 36757494 PMCID: PMC10167145 DOI: 10.1007/s00431-023-04847-y] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/10/2023]
Abstract
Lung ultrasound scores (LUSs) have been demonstrated to accurately predict moderate-to-severe bronchopulmonary dysplasia (msBPD). This study attempted to explore the additional value of LUSs for predicting msBPD compared to clinical multivariate models in different gestational age (GA) groups. The study prospectively recruited preterm infants with GA < 32 weeks. Lung ultrasound was performed on days 3, 7, 14, and 21 after birth. A linear mixed-effects regression model was used to evaluate LUS evolution in infants born before and after 28 weeks. The receiver operating characteristic (ROC) procedure was used to analyze the reliability of LUS and clinical multivariable models for predicting msBPD. The optimal time to predict msBPD in all infants was 7 days with a cut-off point of 5 (area under the ROC (AUROC) curve: 0.78, 95% confidence interval (CI): 0.71-0.84). In infants with GA ≥ 28 weeks, LUSs provided a moderate diagnostic accuracy for all four time points (AUROC curve: 0.74-0.78), and the AUROC curve for the clinical multivariable model on day 14 was 0.91 (95% CI: 0.84-0.96), which was significantly higher than that of LUSs (AUROC curve: 0.77, 95% CI: 0.68-0.85, P < 0.05). In infants born at 23-27 weeks, LUSs showed a low diagnostic accuracy with higher cut-off points to predict msBPD, and the AUROC curve for GA to predict msBPD was 0.75 (95% CI: 0.59-0.85), providing diagnostic accuracy similar to that of LUSs. Conclusion: The contribution of LUSs to predict msBPD in infants with different GAs remains controversial and requires further investigation. What is Known: • Lung ultrasound scores (LUSs) have been demonstrated to accurately predict moderate-to-severe bronchopulmonary dysplasia in infants with gestational age (GA)<32 weeks. What is New: • The LUSs evolution differed between extremely preterm infants born before 28 weeks and preterm infants born at 28-32 weeks of gestation. • LUSs provided similar moderate predictive performance as GA-adjusted LUS and clinical multivariate models in infants born after 28 weeks, while LUSs seem to be less helpful in infants born before 28 weeks.
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Affiliation(s)
- Zhenyu Li
- Department of Neonatology, The First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, Jilin, China
| | - Xin Mu
- Department of Neonatology, The First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, Jilin, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, Jilin, China
| | - Xiaoming Lv
- Department of Neonatology, The First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, Jilin, China
| | - Shuyu Si
- Department of Neonatology, The First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, Jilin, China
| | - Yiyi Guo
- Department of Neonatology, The First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, Jilin, China
| | - Hui Wu
- Department of Neonatology, The First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, Jilin, China.
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Shen Y, Bi Y, Zhao P, Yang X, Zhang Z, Dang D, Wang H, Liu W. Equilibrium solubility of 6-propyl-2-thiouracil in nine pure solvents: Determination, correlation, Hansen solubility parameter and thermodynamic properties. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Dang D, Meng Z, Zhang C, Li Z, Wei J, Wu H. Heme induces intestinal epithelial cell ferroptosis via mitochondrial dysfunction in transfusion-associated necrotizing enterocolitis. FASEB J 2022; 36:e22649. [PMID: 36383399 DOI: 10.1096/fj.202200853rrr] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 06/04/2022] [Revised: 10/25/2022] [Accepted: 10/31/2022] [Indexed: 11/18/2022]
Abstract
Transfusion-associated necrotising enterocolitis (TANEC) is a life-threatening disease with a poor prognosis in preterm infants. This study explored whether and how heme induces ferroptosis in TANEC gut injury. A TANEC mouse model and a cell culture system for heme and Caco-2 cells were established. Ferroptosis was assessed by measuring iron and malondialdehyde (MDA) levels and mitochondrial morphology in intestinal tissues and Caco-2 cells. Mitochondrial dysfunction was evaluated by measuring mitochondrial reactive oxygen species (ROS) production and membrane potential using JC-1. The intestinal injury grade was higher in the anemia-transfusion group than in the control group (p < .0001). Higher intestinal iron concentration (p < .0001), elevated levels of lipid peroxidation MDA (p = .0021), and ferroptotic mitochondrial morphological changes were found in mice of the anemia-transfusion group; specific ferroptosis inhibitor could alleviate anemia-transfusion gut injury, suggesting that ferroptosis play a role in the TANEC gut injury. Next, we explored whether heme released by hemolysis of erythrocytes induces ferroptosis in intestinal epithelial cells in vitro. The viability of Caco-2 cells significantly decreased after heme treatment (p < .0001). Iron accumulation, MDA elevated levels, and mitochondrial dysfunction also existed in the co-culture system, which ferroptosis inhibitors could reduce. In summary, ferroptosis was discovered in TANEC, and heme could induce ferroptosis in intestinal epithelial cells via mitochondrial dysfunction. Heme-inducing ferroptosis may be a possible mechanism and therapeutic target for TANEC.
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Affiliation(s)
- Dan Dang
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Zhaoli Meng
- Department of Translational Medicine Research Institute, First Hospital of Jilin University, Changchun, China
| | - Chuan Zhang
- Department of Pediatric Surgery, First Hospital of Jilin University, Changchun, China
| | - Zhenyu Li
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Jiaqi Wei
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Hui Wu
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
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8
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Chen Y, Dang D, Yan B, Cheng Y. Nanocomposite catalysts of non-purified MoVNbTeOx with CeO2 or TiO2 for oxidative dehydrogenation of ethane. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Zhang C, Dang D, Wang H, Shi S, Dai J, Yang M. Acircadian rhythm-related gene signature for predicting survival and drug response in HNSC. Front Immunol 2022; 13:1029676. [PMID: 36505439 PMCID: PMC9729285 DOI: 10.3389/fimmu.2022.1029676] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 11/02/2022] [Indexed: 11/25/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSC) represents one of the most common malignant carcinomas worldwide. Because the 5-year survival rate of patients with HNSC is poor, it is necessary to develop an effective signature for predicting the risk of HNSC. To identify a circadian rhythm (CR)-related predictive signature, we analyzed the RNA-seq data of patients with HNSC from The Cancer Genome Atlas and Gene Expression Omnibus cohorts. Nine CR-related genes (PER2, PER3, GHRL, CSF2, HDAC3, KLF10, PRKAA2, PTGDS, and RORB) were identified to develop a CR-related signature. The area under the curve values for 5-year overall survival were 0.681, 0.700, and 0.729 in the training set, validation set, and an external independent test set (GSE41613), respectively. The Kaplan‒Meier curve analysis showed that the high-risk group had a reduced relapse-free survival compared with the low-risk group in the training set, validation set, and test set (P < 0.05). Finally, we observed that the CR-related gene signature was associated with the tumor immune microenvironment, somatic nucleotide variation, and drug response in HNSC. In conclusion, we developed a circadian rhythm-related gene signature for predicting overall survival in HNSC.
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Affiliation(s)
- Chuan Zhang
- Department of Pediatric Surgery, First Affiliated Hospital of Jilin University, Changchun, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin university, Changchun, China
| | - Hongrui Wang
- Department of Molecular Biology, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Shuyou Shi
- Department of Molecular Biology, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China
| | - Jiayu Dai
- College of Clinical Medicine, Jilin University, Changchun, Jilin, China
| | - Ming Yang
- Department of Molecular Biology, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China,*Correspondence: Ming Yang,
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Dang D, Zhang C, Meng Z, Lv X, Li Z, Wei J, Wu H. Integrative analysis links ferroptosis to necrotizing enterocolitis and reveals the role of ACSL4 in immune disorders. iScience 2022; 25:105406. [DOI: 10.1016/j.isci.2022.105406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 05/24/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
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Wu H, Dang D, Yang X, Wang J, Qi R, Yang W, Liang W. Accurate and Automatic Extraction of Cell Self-Rotation Speed in an ODEP Field Using an Area Change Algorithm. Micromachines 2022; 13:mi13060818. [PMID: 35744432 PMCID: PMC9229272 DOI: 10.3390/mi13060818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/20/2022] [Accepted: 05/22/2022] [Indexed: 11/16/2022]
Abstract
Cells are complex biological units that can sense physicochemical stimuli from their surroundings and respond positively to them through characterization of the cell behavior. Thus, understanding the motions of cells is important for investigating their intrinsic properties and reflecting their various states. Computer-vision-based methods for elucidating cell behavior offer a novel approach to accurately extract cell motions. Here, we propose an algorithm based on area change to automatically extract the self-rotation of cells in an optically induced dielectrophoresis field. To obtain a clear and complete outline of the cell structure, dark corner removal and contrast stretching techniques are used in the pre-processing stage. The self-rotation speed is calculated by determining the frequency of the cell area changes in all of the captured images. The algorithm is suitable for calculating in-plane and out-of-plane rotations, while addressing the problem of identical images at different rotation angles when dealing with rotations of spherical and flat cells. In addition, the algorithm can be used to determine the motion trajectory of cells. The experimental results show that the algorithm can efficiently and accurately calculate cell rotation speeds of up to ~155 rpm. Potential applications of the proposed algorithm include cell morphology extraction, cell classification, and characterization of the cell mechanical properties. The algorithm can be very helpful for those who are interested in using computer vision and artificial-intelligence-based ideology in single-cell studies, drug treatment, and other bio-related fields.
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Affiliation(s)
- Haiyang Wu
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China; (H.W.); (X.Y.); (J.W.)
| | - Dan Dang
- School of Science, Shenyang Jianzhu University, Shenyang 110168, China
- Correspondence: (D.D.); (R.Q.); (W.L.)
| | - Xieliu Yang
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China; (H.W.); (X.Y.); (J.W.)
| | - Junhai Wang
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China; (H.W.); (X.Y.); (J.W.)
| | - Ruolong Qi
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China; (H.W.); (X.Y.); (J.W.)
- Correspondence: (D.D.); (R.Q.); (W.L.)
| | - Wenguang Yang
- School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, China;
| | - Wenfeng Liang
- School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China; (H.W.); (X.Y.); (J.W.)
- Correspondence: (D.D.); (R.Q.); (W.L.)
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Dang D, Chen Y, Chen X, Feng K, Yan B, Cheng Y. Phase-pure M1 MoVNbTeOx/TiO2 nanocomposite catalysts: high catalytic performance for oxidative dehydrogenation of ethane. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01749g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The introduction of TiO2 can improve the catalytic performance of phase-pure M1 MoVNbTeOx in the ODHE process, in which the STY enhancement of M1/40TiO2 at 400 °C and W/F = 7.55 gcat h molC2H6−1 reached ∼76%.
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Affiliation(s)
- Dan Dang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Yuxin Chen
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Xin Chen
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Kai Feng
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Binhang Yan
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Yi Cheng
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
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Dang D, Kuhn L, Fooladi E, Ky V, Cheung K, Rashid H, Zaman S. Predictors of Radial to Femoral Artery Access Crossover During Primary Percutaneous Coronary Intervention for ST-Elevation Myocardial Infarction. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ma S, Zhang X, Dang D, Wang W, Wang Y, Liu L, Wang T. Dynamic Characterization of Single Cells Based on Temporal Cellular Mechanical Properties. IEEE Trans Nanobioscience 2021; 22:19-27. [PMID: 34941515 DOI: 10.1109/tnb.2021.3136198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The mechanical properties of cells play important roles in regulating the physiological activities of cells and reflect the state of macro-organisms. Although many approaches are available for investigating the mechanical properties of cells, the fluidity of cytoplasm across cell boundaries makes characterizing the dynamics of mechanical properties of single cells exceedingly difficult. In this study, we present a single cell characterization method by modelling the dynamics of cellular mechanical properties measured with an atomic force microscope (AFM). The mechanical dynamics of a single cell system was described by a linear model with a mechanical stimulus as virtual input and mechanical property parameters as outputs. The dynamic mechanical properties of a single cell were characterized by the system matrix of the single cell system. The method was used to classify different types of cells, and the experimental results show that the proposed method outperformed conventional methods by achieving an average classification accuracy of over 90%. The developed method can be used to classify different cancer types according to the mechanical properties of tumour cells, which is of great significance for clinically assisted pathological diagnosis.
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Dong C, Dang D, Zhao X, Wang Y, Wang Z, Zhang C. Integrative Characterization of the Role of IL27 In Melanoma Using Bioinformatics Analysis. Front Immunol 2021; 12:713001. [PMID: 34733272 PMCID: PMC8558420 DOI: 10.3389/fimmu.2021.713001] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/24/2021] [Indexed: 12/11/2022] Open
Abstract
Background IL27 has been reported to play dual roles in cancer; however, its effects on the tumor microenvironment (TME), immunotherapy, and prognosis in melanoma remain largely unclear. This study was aimed to uncover the effects of IL27 on TME, immunotherapy and prognosis in patients with melanoma. Methods RNA-seq data, drug sensitivity data, and clinical data were obtained from TCGA, GEO, CCLE, and CTRP. Log-rank test was used to determine the survival value of IL27. Univariate and multivariate Cox regression analyses were employed to determine the independent predictors of survival outcomes. DAVID and GSEA were used to perform gene set functional annotations. ssGSEA was used to explore the association between IL27 and immune infiltrates. ConsensusClusterPlus was used to classify melanoma tissues into hot tumors or cold tumors. Results Clinically, IL27 was negatively correlated with Breslow depth (P = 0.00042) and positively associated with response to radiotherapy (P = 0.038). High IL27 expression showed an improved survival outcome (P = 0.00016), and could serve as an independent predictor of survival outcomes (hazard ratio: 0.32 - 0.88, P = 0.015). Functionally, elevated IL27 expression could induce an enhanced immune response and pyroptosis (R = 0.64, P = 1.2e-55), autophagy (R = 0.37, P = 7.1e-17) and apoptosis (R = 0.47, P = 1.1e-27) in patients with melanoma. Mechanistically, elevated IL27 expression was positively correlated with cytotoxic cytokines (including INFG and GZMB), enhanced immune infiltrates, and elevated CD8/Treg ratio (R = 0.14, P = 0.02), possibly driving CD8+ T cell infiltration by suppressing β-catenin signaling in the TME. Furthermore, IL27 was significantly associated with hot tumor state, multiple predictors of response to immunotherapy, and improved drug response in patients with melanoma. Conclusions IL27 was correlated with enriched CD8+ T cells, desirable therapeutic response and improved prognosis. It thus can be utilized as a promising modulator in the development of cytokine-based immunotherapy for melanoma.
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Affiliation(s)
- Chunyu Dong
- Department of Pediatric Surgery, The First Hospital of Jilin University, Changchun, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Xuesong Zhao
- Department of Pediatric Surgery, The First Hospital of Jilin University, Changchun, China
| | - Yuanyuan Wang
- Department of Pediatric Ultrasound, The First Hospital of Jilin University, Changchun, China
| | - Zhijun Wang
- Department of Pediatric Surgery, The First Hospital of Jilin University, Changchun, China
| | - Chuan Zhang
- Department of Pediatric Surgery, The First Hospital of Jilin University, Changchun, China
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Dang D, Liu Y, Zhou Q, Li H, Wang Y, Wu H. Identification of a novel IRF8 homozygous mutation causing neutrophilia, monocytopenia and fatal infection in a female neonate. Infect Genet Evol 2021; 96:105121. [PMID: 34666172 DOI: 10.1016/j.meegid.2021.105121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 07/15/2021] [Revised: 09/12/2021] [Accepted: 10/11/2021] [Indexed: 12/29/2022]
Abstract
Inborn errors of immunity (IEIs) result from mutations in genes involved in host immune defense and immune regulation. Herein, we report the identification of a novel IRF8 mutation in a neonate with an IEI. DNA samples from both the neonate and her parents were subjected to DNA sequencing, and the immune status of the patient was assessed. We identified a mutation (c.331C > T, p. Arg111*) in the interferon regulatory factor 8 (IRF8) gene that manifested as sever dysfunctional neutrophilia (96.53 × 109/l) and monocytopenia (0.02 × 109/l). The patient's CD3+ T cell and CD8+ T cell counts were decreased. Her levels of IFN-γ were low even during severe infection. The mRNA expression levels of IRF8 were lower than normal. Her clinical manifestations included a recurrent and progressively fatal infection. Since IRF8 plays a key role in the differentiation and development of immune cells, we suspected that the novel mutation (c.331C > T, p. Arg111*) may be consistent with a severe loss of IRF8 function and result in a failure of immune cells to differentiate and maturation, and lead to a severe infection with early onset.
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Affiliation(s)
- Dan Dang
- Department of Neonatology, First Hospital of Jilin University, Changchun 130021, China
| | - Ying Liu
- Department of Neonatology, First Hospital of Jilin University, Changchun 130021, China
| | - Qi Zhou
- Department of Neonatology, First Hospital of Jilin University, Changchun 130021, China
| | - Heng Li
- Department of Neonatology, First Hospital of Jilin University, Changchun 130021, China
| | - Ying Wang
- Research Institute of pediatrics, First Hospital of Jilin University, Changchun 130021, China
| | - Hui Wu
- Department of Neonatology, First Hospital of Jilin University, Changchun 130021, China.
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Ma S, Dang D, Wang W, Wang Y, Liu L. Concentration optimization of combinatorial drugs using Markov chain-based models. BMC Bioinformatics 2021; 22:451. [PMID: 34548014 PMCID: PMC8456646 DOI: 10.1186/s12859-021-04364-5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 08/31/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Combinatorial drug therapy for complex diseases, such as HSV infection and cancers, has a more significant efficacy than single-drug treatment. However, one key challenge is how to effectively and efficiently determine the optimal concentrations of combinatorial drugs because the number of drug combinations increases exponentially with the types of drugs. RESULTS In this study, a searching method based on Markov chain is presented to optimize the combinatorial drug concentrations. In this method, the searching process of the optimal drug concentrations is converted into a Markov chain process with state variables representing all possible combinations of discretized drug concentrations. The transition probability matrix is updated by comparing the drug responses of the adjacent states in the network of the Markov chain and the drug concentration optimization is turned to seek the state with maximum value in the stationary distribution vector. Its performance is compared with five stochastic optimization algorithms as benchmark methods by simulation and biological experiments. Both simulation results and experimental data demonstrate that the Markov chain-based approach is more reliable and efficient in seeking global optimum than the benchmark algorithms. Furthermore, the Markov chain-based approach allows parallel implementation of all drug testing experiments, and largely reduces the times in the biological experiments. CONCLUSION This article provides a versatile method for combinatorial drug screening, which is of great significance for clinical drug combination therapy.
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Grants
- U1908215, 61925307, 61903265, 61933008, 91748212, 91848201, U1813210 National Natural Science Foundation of China
- U1908215, 61925307, 61903265, 61933008, 91748212, 91848201, U1813210 National Natural Science Foundation of China
- U1908215, 61925307, 61903265, 61933008, 91748212, 91848201, U1813210 National Natural Science Foundation of China
- 2018YFB1304700 National Key R&D Program of China
- No. QYZDB-SSW-JSC008 Key Research Program of Frontier Sciences, CAS
- No. QYZDB-SSW-JSC008 Key Research Program of Frontier Sciences, CAS
- National Key R&D Program of China
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Affiliation(s)
- Shuang Ma
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Dan Dang
- Faculty of Medical Devices, Shenyang Pharmaceutical University, Shenyang, China
| | - Wenxue Wang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Yuechao Wang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
| | - Lianqing Liu
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, China
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Zhang C, Dang D, Cong L, Sun H, Cong X. Pivotal factors associated with the immunosuppressive tumor microenvironment and melanoma metastasis. Cancer Med 2021; 10:4710-4720. [PMID: 34159752 PMCID: PMC8290234 DOI: 10.1002/cam4.3963] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 03/17/2021] [Accepted: 04/20/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Considering melanoma is the deadliest malignancy among dermatoma and presently lacks effective therapies, there is an urgent need to investigate the potential mechanisms underlying melanoma metastasis and determine prospective therapeutic targets for precise treatment of melanoma. METHOD Hub genes in melanoma metastasis were identified by analyzing RNA-seq data (mRNA, miRNA, and lncRNA) obtained from TCGA database. Then the identified hub genes were validated in human tissues with qRT-PCR, followed by survival analysis. Competing endogenous RNAs of the hub genes were defined to clarify potential molecular mechanism of melanoma progression. Then central gene-related signaling pathways were analyzed, followed by immune cell abundance analysis in tumor microenvironment with CYTERSORTx. RESULT A tetrad of IL2RA, IL2RG, IFNG, and IL7R genes were determined as hub genes and verified by qRT-PCR, which were significantly associated with unfavorable prognosis in melanoma. LINC02446, LINC01857, and LINC02384 may act as competing endogenous lncRNAs of IL2RA and IL7R through absorbing their shared miR.891a.5p and miR.203b.3p. JAK-STAT signaling pathway identified as the most relevant pathway in melanoma metastasis, as well as a wealthy of genes including TNFRSF 13B, TNFRSF17, TNFRSF9, TNFRSF8, TNFRSF13C, TNFRSF11B, LAG3, NRP1, ENTPD1, NT5E, CCL21, and CCR7, may induce tumor autoimmune suppression through enhancing regulatory T-cell abundance and performance in the tumor microenvironment. And regulatory T-cell proportion was indeed critically elevated in metastatic melanoma relative to primary melanoma, as well as in highly expressed IL2RA, IL2RG, IL7R, and IFNG group than their respective counterparts. CONCLUSION Elevated IL2RA, IL2RG, IL7R, and IFNG expression may play a central role in promoting melanoma metastasis through up regulation of intratumoral regulatory T-cell proportion mainly by activation of JAK-STAT signaling pathway. LINC02446, LINC01857, and LINC02384 may stimulate melanoma progression by reducing tumor-protecting miR.891a.5p and miR.203b.3p. A number of identified molecules including TNFRSF13B, LAG3, NRP1, ENTPD1, NT5E, CCL21, and CCR7 can serve as future therapeutic targets in melanoma treatment.
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Affiliation(s)
- Chuan Zhang
- Department of DermatologyChina‐Japan Union Hospital of Jilin UniversityChangchunPeople’s Republic of China
- Department of Pediatric SurgeryFirst Hospital of Jilin UniversityChangchunPeople’s Republic of China
| | - Dan Dang
- Department of NeonatologyFirst Hospital of Jilin UniversityChangchunPeople’s Republic of China
| | - Lele Cong
- Department of DermatologyChina‐Japan Union Hospital of Jilin UniversityChangchunPeople’s Republic of China
| | - Hongyan Sun
- Department of BiobankChina‐Japan Union Hospital of Jilin UniversityChangchunPeople’s Republic of China
| | - Xianling Cong
- Department of DermatologyChina‐Japan Union Hospital of Jilin UniversityChangchunPeople’s Republic of China
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Zhang C, Dang D, Wang Y, Cong X. A Nomogram Combining a Four-Gene Biomarker and Clinical Factors for Predicting Survival of Melanoma. Front Oncol 2021; 11:593587. [PMID: 33868993 PMCID: PMC8047639 DOI: 10.3389/fonc.2021.593587] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 03/09/2021] [Indexed: 11/26/2022] Open
Abstract
Background Currently there is no effective prognostic indicator for melanoma, the deadliest skin cancer. Thus, we aimed to develop and validate a nomogram predictive model for predicting survival of melanoma. Methods Four hundred forty-nine melanoma cases with RNA sequencing (RNA-seq) data from TCGA were randomly divided into the training set I (n = 224) and validation set I (n = 225), 210 melanoma cases with RNA-seq data from Lund cohort of Lund University (available in GSE65904) were used as an external test set. The prognostic gene biomarker was developed and validated based on the above three sets. The developed gene biomarker combined with clinical characteristics was used as variables to develop and validate a nomogram predictive model based on 379 patients with complete clinical data from TCGA (Among 470 cases, 91 cases with missing clinical data were excluded from the study), which were randomly divided into the training set II (n = 189) and validation set II (n = 190). Area under the curve (AUC), concordance index (C-index), calibration curve, and Kaplan-Meier estimate were used to assess predictive performance of the nomogram model. Results Four genes, i.e., CLEC7A, CLEC10A, HAPLN3, and HCP5 comprise an immune-related prognostic biomarker. The predictive performance of the biomarker was validated using tROC and log-rank test in the training set I (n = 224, 5-year AUC of 0.683), validation set I (n = 225, 5-year AUC of 0.644), and test set I (n = 210, 5-year AUC of 0.645). The biomarker was also significantly associated with improved survival in the training set (P < 0.01), validation set (P < 0.05), and test set (P < 0.001), respectively. In addition, a nomogram combing the four-gene biomarker and six clinical factors for predicting survival in melanoma was developed in the training set II (n = 189), and validated in the validation set II (n = 190), with a concordance index of 0.736 ± 0.041 and an AUC of 0.832 ± 0.071. Conclusion We developed and validated a nomogram predictive model combining a four-gene biomarker and six clinical factors for melanoma patients, which could facilitate risk stratification and treatment planning.
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Affiliation(s)
- Chuan Zhang
- Department of Pediatric Surgery, The First Hospital of Jilin University, Changchun, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Yuqian Wang
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xianling Cong
- Department of Dermatology, China-Japan Union Hospital of Jilin University, Changchun, China
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Li Z, Lv X, Liu Q, Dang D, Wu H. Update on the use of sildenafil in neonatal pulmonary hypertension: a narrative review of the history, current administration, and future directions. Transl Pediatr 2021; 10:998-1007. [PMID: 34012848 PMCID: PMC8107873 DOI: 10.21037/tp-20-277] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pulmonary hypertension (PH) is a life-threatening syndrome in neonates and has multiple and varied etiologies. However, few clinical studies have systematically evaluated the treatment regimens for this population. Phosphodiesterase (PDE) inhibitors, such as milrinone, tadalafil, dipyridamole, and sildenafil, are the most important regulators of vascular relaxation in the normal pulmonary vascular transition after birth, and these agents are widely used in the treatment of PH. Sildenafil, a representative PDE-5 inhibitor, has an important role as a single mode of therapy. However, the lack of evidence from pharmacokinetic and clinical trials has limited the emergence of standardized treatment regimens for sildenafil. There are also differing opinions among researchers regarding the best route of sildenafil administration. Due to the interindividual variability in the neonatal population, it is worth selecting the most suitable route of sildenafil administration according to the specific conditions of the neonatal population. These may be evaluated using the oxygenation index (OI), pulmonary artery pressure, mean blood pressure, and the serological index. This article reviews the clinical data on the use of sildenafil, focusing on the current and promising alternative routes of administration, which may affect subsequent clinical research in term and preterm neonates.
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Affiliation(s)
- Zhenyu Li
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Xiaoming Lv
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Qinmei Liu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Hui Wu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
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Zhang C, Dang D, Liu C, Wang Y, Cong X. Identification of tumor mutation burden-related hub genes and the underlying mechanism in melanoma. J Cancer 2021; 12:2440-2449. [PMID: 33758620 PMCID: PMC7974884 DOI: 10.7150/jca.53697] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 01/25/2021] [Indexed: 02/07/2023] Open
Abstract
Background: Tumor mutation burden (TMB) has emerged as an important predictive factor for drug resistance in cancers; however, the specific mechanism underlying TMB function in melanoma remains elusive. Methods: Data on somatic mutations, RNA sequencing (RNA-seq), miRNA sequencing (miRNA-seq), and clinical characteristics for 472 melanoma patients were extracted from the TCGA cohort. RNA-seq data of melanoma cell lines were obtained from the Cancer Cell Line Encyclopedia, and sensitivity of cell lines to therapeutic agents is available in the Cancer Therapeutics Response Portal. TMB was calculated based on somatic mutation data. Differentially expressed gene analysis, weighted gene co-expression network analysis, protein-protein interaction networks, Minimal Common Oncology Data Elements, and survival analysis were leveraged to determine TMB-related hub genes. Competing endogenous RNA (ceRNA) networks were constructed to explore the molecular mechanisms underlying hub gene function. The influence of key genes on drug sensitivity was analyzed to investigate their clinical significance. Results: Elevated TMB levels were significantly correlated with improved survival outcomes. In addition, six tumor-infiltrating immune cells, including naive B cells, regulatory T cells, memory resting CD4 T cells, memory B cells, activated mast cells, and resting NK cells, were significantly overexpressed in the low-TMB group relative to the high-TMB group. Furthermore, we identified FLNC, NEXN, and TNNT3 as TMB-related hub genes, and constructed their ceRNA networks, including five miRNAs (has-miR-590-3p, has-miR-374b-5p, has-miR-3127-5p, has-miR-1913, and has-miR-1291) and 31 lncRNAs (FAM66C, MIAT, NR2F2AS1, etc.). Finally, we observed that TMB-related genes were associated with distinct therapeutic responses to AKT/mTOR pathway inhibitors. Conclusions: We identified three TMB-associated key genes, established their ceRNA networks, and investigated their influence on therapeutic responses, which could provide insights into future precision medicine.
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Affiliation(s)
- Chuan Zhang
- Department of Dermatology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
- Department of Pediatric Surgery, the First Hospital of Jilin University, Changchun 130021, People's Republic of China
| | - Dan Dang
- Department of Neonatology, the First Hospital of Jilin University, Changchun 130021, People's Republic of China
| | - Chenlu Liu
- Department of Tissue Bank, China-Japan Union Hospital of Jilin University, Changchun, 130033, People's Republic of China
| | - Yuqian Wang
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
| | - Xianling Cong
- Department of Dermatology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
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Li ZY, Dang D, Wu H. Next-generation Sequencing of Cerebrospinal Fluid for the Diagnosis of Unexplained Central Nervous System Infections. Pediatr Neurol 2021; 115:10-20. [PMID: 33310532 DOI: 10.1016/j.pediatrneurol.2020.10.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 10/20/2020] [Accepted: 10/22/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Central nervous system infections cause substantial morbidity and mortality in pediatric patients. However, in approximately half of the clinical cases, the etiology is unidentified. As an unbiased molecular diagnostic technology, next-generation sequencing is gradually being applied to investigate central nervous system infections. This review summarizes and critiques the literature on this new technology for etiologic identification of unexplained central nervous system infections in pediatric patients and discusses the future prospects for development of this technology in pediatrics. METHODS A comprehensive PubMed search was conducted of articles published from January 1, 2008, to June 26, 2020 in order to retrieve all available studies on this topic. Other relevant articles were identified from recent reviews and the bibliographies of the retrieved full-text articles. RESULTS Among the 441 studies retrieved, 26 pediatric studies, comprising 15 case reports and 11 case series, used next-generation sequencing as a diagnostic tool. In these 26 studies, next-generation sequencing was performed on cerebrospinal fluid samples from 529 pediatric patients, and potential causal pathogens were identified in 22.1% of the cases. CONCLUSION There is increasing evidence that next-generation sequencing can play a role in identifying the causes of unexplained encephalitis, meningoencephalitis, and meningitis in pediatric patients, although the diagnostic value of next-generation sequencing is difficult to quantify. There is an increasing need for close collaboration between laboratory scientists and clinicians. We believe that further clinical studies should be performed to evaluate the performance of next-generation sequencing for individual targets and in high-risk populations.
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Affiliation(s)
- Zhen Yu Li
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, Jilin, PR China
| | - Dan Dang
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, Jilin, PR China
| | - Hui Wu
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, Jilin, PR China.
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Dang D, Dowling C, Zaman S, Cameron J, Kuhn L. Predictors of Radial to Femoral Artery Crossover During Primary Percutaneous Coronary Intervention: A Systematic Review and Meta-Analysis. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liu B, Dang D, Yang Y, Yu P, Li M. Nanoscale imaging and mechanical analysis of viral infection on cells by atomic force microscopy. Acta Biochim Biophys Sin (Shanghai) 2020; 52:1289-1292. [PMID: 33098296 DOI: 10.1093/abbs/gmaa108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/04/2020] [Accepted: 08/13/2020] [Indexed: 11/14/2022] Open
Affiliation(s)
- Bin Liu
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
| | - Dan Dang
- School of Medical Devices, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yang Yang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
| | - Peng Yu
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
| | - Mi Li
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
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Fu X, Dang D, Li S, Xu Z, Wu H. Effect of Delayed Versus Early Cord Clamping on Improving Anemia in Term Infants Aged Two Months or Older — A Meta-analysis. Indian Pediatr 2020. [DOI: 10.1007/s13312-020-1960-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fu X, Dang D, Li S, Xu Z, Wu H. Effect of Delayed Versus Early Cord Clamping on Improving Anemia in Term Infants Aged Two Months or Older - A Meta-analysis. Indian Pediatr 2020; 57:815-819. [PMID: 32999110] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To assess the effects of delayed cord clamping (DCC) on hemoglobin (Hb), mean corpuscular volume (MCV) and ferritin level in infants 2 months or older. EVIDENCE ACQUISITION Meta-analysis of randomized control trials searched systematically from PubMed, Cochrane and Web of science. Trials published from Jan 1,1975 to Mar 12, 2018, no language and country restrictions. Twelve studies were included in this meta-analysis. In total, 993 infants were treated with DCC, while 989 cases received early cord clamping. Delayed cord clamping was defined as umbilical cord clamping time greater than 60s after delivery. Outcomes assed were (i) hemoglobin (Hb), (ii) mean corpuscular volume (MCV) and ferritin level. RESULTS The results show that DCC increased hemoglobin level (SMD=0.4678 95%CI: [0.1515, 0.7841]), Ferritin level (SMD=2.1450 95%CI: [1.0431, 3.2470]) and MCV (SMD=0.5751 95%CI: [0.1637, 0.9865]) in infants between 2-12 months compared to ECC subject analysis noted the effects of Hb increase was greater in Asian infants. CONCLUSIONS Delayed cord clamping improved the Hb, MCV and ferritin level of infants after birth.
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Affiliation(s)
- Xin Fu
- Department of Neonatology, The First Hospital of Jilin University, Changchun 130021, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, Changchun 130021, China
| | - Siwen Li
- Department of Neonatology, The First Hospital of Jilin University, Changchun 130021, China
| | - Zhiyan Xu
- Department of Neonatology, The First Hospital of Jilin University, Changchun 130021, China
| | - Hui Wu
- Department of Neonatology, The First Hospital of Jilin University, Changchun 130021, China. Correspondence to: Dr Hui Wu, Department of Neonatology, The First Hospital of Jilin University,NO.71 Xinmin Street, Changchun, China 130 021.
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Dang D, Wang L, Zhang C, Li Z, Wu H. Potential effects of SARS-CoV-2 infection during pregnancy on fetuses and newborns are worthy of attention. J Obstet Gynaecol Res 2020; 46:1951-1957. [PMID: 32779309 PMCID: PMC7436741 DOI: 10.1111/jog.14406] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 07/02/2020] [Indexed: 12/22/2022]
Abstract
The outbreak of the 2019 novel coronavirus disease (SARS‐CoV‐2) has resulted in a major epidemic threat worldwide. However, the effects of neoviruses on infected pregnant women and especially on their fetuses and newborns are not well understood. Most up‐to‐date evidences about how SARS‐CoV‐2 affected patients especially in pregnancy were collected by conducting a comprehensive search of medical literature electronic databases. Immune‐related data of pregnant women, fetuses and newborns were further analysis. According to the limited literature, SARS‐CoV‐2 utilizes angiotensin converting enzyme 2 as its receptor and causes severe hypoxemia. Insufficiency of angiotensin converting enzyme 2 in pregnant women and the effects of hypoxia on the placental oxygen supply will cause severe perinatal complications. In addition, SARS‐CoV‐2 infection may disrupt maternal‐fetal immune tolerance and cause immunological damage to embryos. Because of these reasons, pregnancy complications such as fetal demise or premature birth, preeclampsia, intrauterine growth restriction, respiratory dyspnea, nervous system dysplasia and immune system defects are likely to occur in pregnant women with COVID‐19 or their newborns. Pregnant women infected with SARS‐CoV‐2 should be treated as a special group and given special attention. Fetuses and newborns of SARS‐CoV‐2‐infected pregnant women should be given more protection to reduce the occurrence of adverse events. In this review, we intend to provide an overview of the physiological and immunological changes that induce the pregnancy complications. This article will benefit the treatment and prognosis of fetuses and newborns of SARS‐CoV‐2‐infected pregnant women.
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Affiliation(s)
- Dan Dang
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Liying Wang
- Department of Molecular Biology, College of Basic Medicine, Jilin University, Changchun, China
| | - Chuan Zhang
- Department of Paediatric Surgery, First Hospital of Jilin University, Changchun, China
| | - Zhenyu Li
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Hui Wu
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
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Li ZY, Dang D, Qu YM, Wu H. Thinking about the neonates born to mothers with COVID-19. Transl Pediatr 2020; 9:573-575. [PMID: 32953556 PMCID: PMC7475310 DOI: 10.21037/tp-20-97] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Zhen-Yu Li
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Yang-Ming Qu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
| | - Hui Wu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, China
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Ding J, Zhao S, Ren K, Dang D, Li H, Wu F, Zhang M, Li Z, Guo J. Prediction of generalization of ocular myasthenia gravis under immunosuppressive therapy in Northwest China. BMC Neurol 2020; 20:238. [PMID: 32527235 PMCID: PMC7288410 DOI: 10.1186/s12883-020-01805-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/26/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND It is well demonstrated that immunosuppressants can reduce, but not eliminate the risk of generalized development in ocular myasthenia gravis (OMG). In this study, we aimed to explore the predictive factors of generalized conversion of OMG patients who received immunosuppressive treatments. METHODS OMG patients under immunosuppressive treatments in Tangdu Hospital from June 2008 to June 2012 were retrospectively reviewed. Baseline clinical characteristics were documented. Patients were followed up regularly by face-to-face interview and the main outcome measure was generalized conversion. The logistic regression analysis was performed to determine the predictive factors of generalization of OMG. RESULTS Two hundred twenty-three eligible OMG patients completed the final follow-up visit and 38 (17.0%) progressed to generalized MG (GMG) at a median time to generalization of 0.9 year. Patients with adult onset and positive repetitive nerve stimulation (RNS) of facial or axillary nerve had higher conversion rate than those with juvenile onset and negative RNS (p = 0.001; p = 0.019; p = 0.015, respectively). Adult-onset patients converted earlier than juvenile-onset OMG patients (p = 0.014). Upon multivariate logistic regression analysis, age of onset (Odds ratio [OR] 1.023, 95% confidence interval [CI] 1.006-1.041, p = 0.007) and positive facial nerve RNS (OR 2.826, 95%CI 1.045-5.460, p = 0.038) were found to be positively associated with generalized development. Moreover, an obviously negative association was found for disease duration (OR 0.603, 95%CI 0.365-0.850, p = 0.019). CONCLUSIONS Age of onset, disease duration and facial nerve RNS test can predict generalized conversion of OMG under immunosuppressive therapy. Adult-onset, shorter disease duration and facial nerve RNS-positive OMG patients have a higher risk of generalized development.
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Affiliation(s)
- Jiaqi Ding
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, China
| | - Sijia Zhao
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, China
| | - Kaixi Ren
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, China
| | - Dan Dang
- Intensive Care Unit, Xi'an Fourth Hospital, Xi'an, 710004, Shaanxi Province, China
| | - Hongzeng Li
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, China
| | - Fang Wu
- Department of Neurology, Xi'an Children's Hospital, Xi'an, 710003, Shaanxi Province, China
| | - Min Zhang
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, China
| | - Zhuyi Li
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, China.
| | - Jun Guo
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shaanxi Province, China.
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Dang D, Stehli J, Dagan M, Duffy S, Dick R, Oxley S, Brennan A, Dinh D, Lefkovits J, Zaman S. 882 Sex Differences in Outcomes of Patients Suffering From ST-Elevation Myocardial Infarction While Already in Hospital. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dang D, Briggs R, Legako J, Thornton K, Matarneh S. The Influence of Mitochondria Enzyme Activity on Beef Tenderness. Meat and Muscle Biology 2019. [DOI: 10.22175/mmb.10806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
ObjectivesAmong all eating quality attributes, tenderness is often described as the most important factor dictating the overall acceptance of cooked beef, as well as, future decision to repeat purchase. While many intrinsic and extrinsic factors impact end-product tenderness, variation in tenderness is usually attributed to the extent of postmortem proteolysis occurring during meat aging. Evidence from the literature indicates that muscle fiber type composition is a major source of variation in the rate and extent of postmortem proteolysis. One of the major differences that distinguishes muscle fibers is the content of mitochondria. Typically, red muscle (slow-oxidative) is characterized by greater amounts of mitochondria than white muscle (fast-glycolytic). As part of the calcium buffering system, mitochondria sequester large quantities of calcium to maintain a constant cytosolic calcium level. We hypothesized that mitochondria may delay the activation of µ-calpain, the major protease responsible for postmortem proteolysis, through preventing the increase in cytosolic calcium concentration.Materials and MethodsTo test our hypothesis, beef longissimus thoracis muscle samples were collected at 30 min and 16 d postmortem. The 30 min samples were immediately snap frozen in liquid nitrogen and stored at – 80°C, while the 16 d samples were used to determine Warner-Bratzler shear force (WBSF) values. Based on WBSF values, the samples were allocated into less tender (average WBSF = 5.3 kg; n = 8) or more tender (average WBSF = 2.3 kg; n = 8) categories. Succinate dehydrogenase (SDH) abundance, citrate synthase (CS) activity, phosphofructokinase (PFK) activity, and glycogen phosphorylase (GP) activity were compared between the two categories using the 30 min samples. Collected data were analyzed using a Student’s t test and considered significant at P ≤ 0.05.ResultsOur results showed that SDH abundance and CS activity (mitochondrial biomarkers) were significantly greater (P = 0.01 and 0.003, respectively) in less tender samples when compared to more tender samples. On the other hand, PFK and GP activities (glycolytic biomarkers) were greater (P < 0.05) in the more tender than less tender steaks.ConclusionWhile not a cause and effect relationship, these data indicate that mitochondria content likely plays a role in development of beef tenderness.
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Affiliation(s)
- D. Dang
- Utah State University Department of Nutrition, Dietetics and Food Sciences
| | - R. Briggs
- Utah State University Department of Animal Dairy and Veterinary Sciences
| | - J. Legako
- Texas Tech University Department of Animal and Food Sciences
| | - K. Thornton
- Utah State University Department of Animal Dairy and Veterinary Sciences
| | - S. Matarneh
- Utah State University Department of Nutrition, Dietetics and Food Sciences
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Rimmele P, Ling H, Lessard S, Moran K, Vieira B, Lin YD, Hong V, Reik A, Dang D, Huttner K, Hicks A. PF736 ZINC FINGER NUCLEASE-MEDIATED DISRUPTION OF THE BCL11A ERYTHROID ENHANCER IN PLERIXAFOR MOBILIZED CD34+ CELLS RESULTS IN ENRICHED BIALLELEIC EDITING AND ALLELE-ADDITIVE INCREASES IN FETAL HEMOGLOBIN. Hemasphere 2019. [DOI: 10.1097/01.hs9.0000561228.81599.cf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Cao C, Dang D, Li Y, Xu J, Cheng Y. Strategy for multiscale numbering-up of microstructured catalytic reactors: A numerical study based on the resistance network model. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.05.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Dang D, Li M, Xiang R. Measurement and analysis of cellular viscoelastic properties using atomic force microscopy. Chin Sci Bull 2019. [DOI: 10.1360/n972018-01266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wu XD, Zhang MY, Chen YT, Yao H, Zhang Q, Wang WJ, Fu DF, Wei RJ, Zhang JY, Li Y, Dang D, Bian HJ, Xu J, Chen ZN. Generation and Characterization of Fibroblast-Specific Basigin Knockout Mice. Mol Biotechnol 2019; 61:111-121. [PMID: 30539414 DOI: 10.1007/s12033-018-0141-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Basigin is a well-known extracellular stimulator of fibroblasts and may confer resistance to apoptosis of fibroblasts in vitro under some pathological status, but its exact function in fibroblasts and the underlying mechanism remain poorly understood. The systematic Basigin gene knockout leads to the perinatal lethality of mice, which limits the delineation of its function in vivo. In this study, we generated a fibroblast-specific Basigin knock-out mouse model and demonstrated the successful deletion of Basigin in fibroblasts. The fibroblast-specific deletion of Basigin did not influence the growth, fertility and the general condition of the mice. No obvious differences were found in the size, morphology, and histological structure of the major organs, including heart, liver, spleen, lung and kidney, between the knockout mice and the control mice. The deletion of Basigin in fibroblasts did not induce apoptosis in the tissues of the major organs. These results provide the first evidence that the fibroblast-specific Basigin knock-out mice could be a useful tool for exploring the function of Basigin in fibroblasts in vivo.
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Affiliation(s)
- Xiao-Dong Wu
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China.,Center of Anesthesiology & Operation, Chinese PLA General Hospital, Beijing, 100853, China
| | - Meng-Yao Zhang
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China.,Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Ya-Tong Chen
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Hui Yao
- Department of Radiation Oncology, The First Peoples' Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, 213000, China
| | - Qing Zhang
- Institute of Liver Surgery, General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, China
| | - Wen-Jing Wang
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Da-Fu Fu
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Ren-Ji Wei
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Jia-Yu Zhang
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Yin Li
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Dan Dang
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Hui-Jie Bian
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Jing Xu
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China.
| | - Zhi-Nan Chen
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China.
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Dang D, Briggs R, Legako J, Thornton K, Matarneh S. The Influence of Mitochondria Enzyme Activity on Beef Tenderness. Meat and Muscle Biology 2019. [DOI: 10.22175/mmb2019.0112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Dang D, Chen X, Yan B, Li Y, Cheng Y. Catalytic performance of phase-pure M1 MoVNbTeOx/CeO2 composite for oxidative dehydrogenation of ethane. J Catal 2018. [DOI: 10.1016/j.jcat.2018.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Li M, Dang D, Xi N, Wang Y, Liu L. Nanoscale imaging and force probing of biomolecular systems using atomic force microscopy: from single molecules to living cells. Nanoscale 2017; 9:17643-17666. [PMID: 29135007 DOI: 10.1039/c7nr07023c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Due to the lack of adequate tools for observation, native molecular behaviors at the nanoscale have been poorly understood. The advent of atomic force microscopy (AFM) provides an exciting instrument for investigating physiological processes on individual living cells with molecular resolution, which attracts the attention of worldwide researchers. In the past few decades, AFM has been widely utilized to investigate molecular activities on diverse biological interfaces, and the performances and functions of AFM have also been continuously improved, greatly improving our understanding of the behaviors of single molecules in action and demonstrating the important role of AFM in addressing biological issues with unprecedented spatiotemporal resolution. In this article, we review the related techniques and recent progress about applying AFM to characterize biomolecular systems in situ from single molecules to living cells. The challenges and future directions are also discussed.
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Affiliation(s)
- Mi Li
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China.
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An T, Dang D, Cheng Y. Effect of reduction and carburization pretreatment on iron catalyst for synthesis of light olefins from CO hydrogenation. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6316-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li M, Dang D, Liu L, Xi N, Wang Y. Atomic Force Microscopy in Characterizing Cell Mechanics for Biomedical Applications: A Review. IEEE Trans Nanobioscience 2017; 16:523-540. [PMID: 28613180 DOI: 10.1109/tnb.2017.2714462] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Cell mechanics is a novel label-free biomarker for indicating cell states and pathological changes. The advent of atomic force microscopy (AFM) provides a powerful tool for quantifying the mechanical properties of single living cells in aqueous conditions. The wide use of AFM in characterizing cell mechanics in the past two decades has yielded remarkable novel insights in understanding the development and progression of certain diseases, such as cancer, showing the huge potential of cell mechanics for practical applications in the field of biomedicine. In this paper, we reviewed the utilization of AFM to characterize cell mechanics. First, the principle and method of AFM single-cell mechanical analysis was presented, along with the mechanical responses of cells to representative external stimuli measured by AFM. Next, the unique changes of cell mechanics in two types of physiological processes (stem cell differentiation, cancer metastasis) revealed by AFM were summarized. After that, the molecular mechanisms guiding cell mechanics were analyzed. Finally the challenges and future directions were discussed.
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Dang D, Hennebery R, Grimes C, Naresh A. 26: Attitudes towards HPV vaccination in young women. Am J Obstet Gynecol 2016. [DOI: 10.1016/j.ajog.2016.09.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Dang D, Delmas C, Espinasseau G, Huo Yung Kai S, Milhau-Bacharach S, Beddok R, Elbaz M. [Not Available]. Ann Cardiol Angeiol (Paris) 2016; 65:379. [PMID: 27968770 DOI: 10.1016/j.ancard.2016.09.031] [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: 06/06/2023]
Affiliation(s)
- D Dang
- Cardiologie, CHU de Rangueil, 31000 Toulouse, France; Cardiologie, centre hospitalier, 46000 Cahors, France.
| | - C Delmas
- Cardiologie, CHU de Rangueil, 31000 Toulouse, France
| | - G Espinasseau
- Cardiologie, centre hospitalier, 46000 Cahors, France
| | - S Huo Yung Kai
- Recherche clinique, université Paul-Sabatier, 31000 Toulouse, France
| | | | - R Beddok
- Département information médicale, centre hospitalier, 46000 Cahors, France
| | - M Elbaz
- Cardiologie, CHU de Rangueil, 31000 Toulouse, France
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Viet C, Dang D, Ye Y, Schmidt B. Macitentan Inhibits Oral Squamous Cell Carcinoma Growth and Invasion in Vitro and in Vivo. J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.joms.2015.06.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lin F, Zhang C, Cheng K, Dang D, Zhao Y. Thoracoscopic excision of two bronchogenic cysts located in highest upper mediastinum: Report of two cases. Pak J Med Sci 2015; 31:721-3. [PMID: 26150875 PMCID: PMC4485302 DOI: 10.12669/pjms.313.6921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 11/26/2014] [Accepted: 03/22/2015] [Indexed: 11/19/2022] Open
Abstract
Bronchogenic cysts are rare congenital malformation that need surgical removal. To date, bronchogenic cysts located in highest upper mediastinum excised by thoracoscopy have not been reported, though complete thoracoscopic extirpation of a bronchogenic cyst has been reported before. We excised two highest upper bronchogenic cysts by thoracoscopy successfully without any postoperative complication, demonstrating thoracoscopy could be a first-line therapeutic option even for highest upper mediastinum brochogenic cysts.
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Affiliation(s)
- Fengwu Lin
- Fengwu Lin, Department of Thoracic Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Chuan Zhang
- Chuan Zhang, Department of Pediatric Surgery, The First Hospital of Jilin University, Changchun 130021, China
| | - Kunpeng Cheng
- Kunpeng Cheng, Department of Thoracic Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Dan Dang
- Yan Zhao, Department of Endocrine, The Second Hospital of Jilin University, Changchun 130041, China
| | - Yan Zhao
- Yan Zhao, Department of Endocrine, The Second Hospital of Jilin University, Changchun 130041, China
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Liu TT, Dang D, Lv XM, Wang TF, Du JF, Wu H. Human milk fortifier with high versus standard protein content for promoting growth of preterm infants: A meta-analysis. J Int Med Res 2015; 43:279-89. [PMID: 25956156 DOI: 10.1177/0300060515579115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 10/10/2014] [Accepted: 03/04/2015] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVE To compare the growth of preterm infants fed standard protein-fortified human milk with that containing human milk fortifier (HMF) with a higher-than-standard protein content. METHODS Published articles reporting randomized controlled trials and prospective observational intervention studies listed on the PubMed®, Embase®, CINAHL and Cochrane Library databases were searched using the keywords 'fortifier', 'human milk', 'breastfeeding', 'breast milk' and 'human milk fortifier'. The mean difference with 95% confidence intervals was used to compare the effect of HMF with a higher-than-standard protein content on infant growth characteristics. RESULTS Five studies with 352 infants with birth weight ≤ 1750 g and a gestational age ≤ 34 weeks who were fed human milk were included in this meta-analysis. Infants in the experimental groups given human milk with higher-than-standard protein fortifier achieved significantly greater weight and length at the end of the study, and greater weight gain, length gain, and head circumference gain, compared with control groups fed human milk with the standard HMF. CONCLUSIONS HMF with a higher-than-standard protein content can improve preterm infant growth compared with standard HMF.
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Affiliation(s)
- Tian-Tian Liu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Dan Dang
- Department of Neonatology, The First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Xiao-Ming Lv
- Department of Neonatology, The First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Teng-Fei Wang
- Department of Neonatology, The First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Jin-Feng Du
- Department of Neonatology, The First Hospital of Jilin University, Changchun, Jilin Province, China
| | - Hui Wu
- Department of Neonatology, The First Hospital of Jilin University, Changchun, Jilin Province, China
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Dang D, Zhang C, Shi S, Mu X, Lv X, Wu H. Umbilical cord milking reduces need for red cell transfusions and improves neonatal adaptation in preterm infants: Meta-analysis. J Obstet Gynaecol Res 2015; 41:890-5. [PMID: 25656528 DOI: 10.1111/jog.12657] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 09/05/2014] [Accepted: 10/29/2014] [Indexed: 12/01/2022]
Abstract
AIM To assess effects of umbilical cord milking (UCM) on early blood pressure stabilization, hemoglobin (Hb), as well as incidence of transfusion and complications in preterm infants. METHODS This meta-analysis was conducted by searching the Pubmed, EMBASE and Cochrane Library (until July 2014) databases. Any clinical trials, including randomized control trials, comparing UCM to immediate cord clamping (ICC) were analyzed. RESULTS Six studies were included in this meta-analysis. In total, 292 preterm infants were treated with UCM, while 295 received ICC. Compared to ICC, UCM increased initial Hb significantly by 1.84 g/dL (weighted mean difference; 95%CI: 0.91-2.76; P < 0.0001) and decreased the incidence of transfusion with a pooled risk ratio of 0.74 (95%CI: 0.61-0.90; P = 0.002). Incidence of necrotizing enterocolitis (NEC), intraventricular hemorrhage (IVH) and mortality were significantly lower with UCM compared with ICC. Apgar score and temperature were not significantly different between the two groups. CONCLUSIONS By facilitating the early stabilization of blood pressure, UCM at preterm birth was found to be comparatively safe and associated with lower blood transfusion exposure and lower incidence of IVH, NEC and death.
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Affiliation(s)
- Dan Dang
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Chuan Zhang
- Department of Pediatric Surgery, First Hospital of Jilin University, Changchun, China
| | - Shan Shi
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Xin Mu
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Xiaoming Lv
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
| | - Hui Wu
- Department of Neonatology, First Hospital of Jilin University, Changchun, China
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Viet C, Dang D, Katz S, Ye Y, Schmidt B. Role of endothelin axis in head and neck cancer invasion. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wu H, Hu C, Dang D, Guo YJ. A Novel WASP Gene Mutation in a Chinese Boy with Wiskott-Aldrich Syndrome. Indian J Hematol Blood Transfus 2014; 30:353-5. [PMID: 25332617 PMCID: PMC4192215 DOI: 10.1007/s12288-014-0403-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 05/05/2014] [Indexed: 11/10/2022] Open
Abstract
Wiskott-Aldrich syndrome (WAS) is a rare inherited X-linked recessive immunodeficiency disease characterized by eczema, thrombocytopenia, immune deficiency, and bloody diarrhea and is caused by WASP gene mutations. This study reports a case of WAS with a novel mutation. A newborn Chinese infant was admitted to the hospital because of intermittent bloody stools, recurrent infections, and persistent thrombocytopenia. Genetic analysis of the coding sequences and flanking splice sites of the WASP gene showed a novel WASP gene deletion mutation (1144delA) at exon 10. Family history showed that both his mother and aunt had a heterozygous genotype of the WASP gene. The infant died at the age of 4 months due to persistent thrombocytopenia and severe pneumonia. A novel WASP gene deletion (1144delA) at exon 10 was identified in a Chinese infant with WAS. This base deletion results in a frame-shift mutation of the gene for an early stop codon at amino acid 444.
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Affiliation(s)
- Hui Wu
- />Department of Neonatology, The First Hospital of Jilin University, Changchun, 130021 China
| | - Cheng Hu
- />School of Biological and Agricultural Engineering, Jilin University, Changchun, 130021 China
| | - Dan Dang
- />Department of Neonatology, The First Hospital of Jilin University, Changchun, 130021 China
| | - Ying-Jie Guo
- />The State Engineering Laboratory of AIDS Vaccine, College of Life Science, Jilin University, 2699 Qianjin Road, Changchun, 130021 China
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