101
|
Ji C, Wang X, Tian H, Hao L, Wang C, Zhou Y, Xu R, Song X, Liu Y, Du J, Liu X. Effects of
Bacillus methylotrophicus
M4‐1 on physiological and biochemical traits of wheat under salinity stress. J Appl Microbiol 2020; 129:695-711. [DOI: 10.1111/jam.14644] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/13/2020] [Accepted: 03/17/2020] [Indexed: 01/11/2023]
|
102
|
Ferrarotto R, Mitani Y, Karpinets T, Frank S, Song X, Fan Y, Liu B, Bell D, Kupferman M, Futreal P, Zhang J, Heymach J, El-Naggar A. Integrative proteomic and transcriptomic analysis define adenoid cystic carcinoma subgroups with distinct therapeutic targets. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2019.11.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
103
|
Zhang Y, Song X, Zhang P, Gao H, Ou C, Kong X. Production of activated carbons from four wastes via one-step activation and their applications in Pb 2+ adsorption: Insight of ash content. CHEMOSPHERE 2020; 245:125587. [PMID: 31864062 DOI: 10.1016/j.chemosphere.2019.125587] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 12/03/2019] [Accepted: 12/08/2019] [Indexed: 06/10/2023]
Abstract
Natural biomass is a renewable source for precursors of porous carbon. Four agriculture wastes of corn cob (CC), wheat bran (WB), rice husk (RH), and soybean shell (SS) were applied to produce activated carbons (ACs) via one-step activation by sodium hydroxide. The effects of ash contents and NaOH dosage ratio (1-5) on surface area for ACs were investigated. Owing to ash etching, the high ash precursor (like RH) exhibited less alkali consumption and larger surface area than low ash one (like CC). All four ACs expressed developed pore structure and outstanding surface area of ∼2500 m2g-1. During adsorption of lead ions in simulated wastewater, RH-based AC revealed superior capture capacity of 492 ± 15 mgg-1. One-step activation had the potential to deliver savings around 1/3 of energy consumption, enabling the cost performance of high ash RH-based AC reaching 194 ± 12 g Pb2+$-1, 76% larger than low ash CC-based AC. High ash biomass is a promising candidate to obtain eco-friendly carbon products.
Collapse
|
104
|
Li FL, Zhong L, Cheung SG, Wong YS, Shin PKS, Lei AP, Zhou HC, Song X, Tam NFY. Is Laguncularia racemosa more invasive than Sonneratia apetala in northern Fujian, China in terms of leaf energetic cost? MARINE POLLUTION BULLETIN 2020; 152:110897. [PMID: 31957670 DOI: 10.1016/j.marpolbul.2020.110897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Laguncularia racemosa and Sonneratia apetala are fast-growing exotic mangrove species in Southern China and widely used for afforestation. However, the invasiveness of the two exotic species is still unclear. We compared structural and physiological traits and energy-use related traits between L. racemosa and S. apetala, and with two natives (Kandelia obovata and Aegiceras corniculatum) in northern Fujian. Results showed that leaf construction cost based on mass (CCM) and caloric values of L. racemosa were significantly lower than S. apetala, and the two natives had highest CCM. Because lower CCM, L. racemosa grew faster with a taller height (4.83 m) and wider ground diameter circumference (40.03 cm) than S. apetala (4.43 m tall and 35.63 cm wide) and the two natives (2.42 m tall and 26.78 cm wide). These findings indicated that L. racemosa could be more invasive than S. apetala in mangrove forests in northern Fujian, China where it still grew well, which deserves more attention.
Collapse
|
105
|
Nehra J, Bradbury PA, Ellis PM, Laskin J, Kollmannsberger C, Hao D, Juergens RA, Goss G, Wheatley-Price P, Hotte SJ, Gelmon K, Tinker AV, Brown-Walker P, Gauthier I, Tu D, Song X, Khan A, Seymour L, Smoragiewicz M. A Canadian cancer trials group phase IB study of durvalumab (anti-PD-L1) plus tremelimumab (anti-CTLA-4) given concurrently or sequentially in patients with advanced, incurable solid malignancies. Invest New Drugs 2020; 38:1442-1447. [PMID: 32020438 DOI: 10.1007/s10637-020-00904-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/27/2020] [Indexed: 11/25/2022]
Abstract
Background The IND.226 study was a phase Ib study to determine the recommended phase II dose of durvalumab + tremelimumab in combination with standard platinum-doublet chemotherapy. Sequential administration of multiple agents increases total chair time adding costs overall and inconvenience for patients. This cohort of the IND.226 study evaluated the safety and tolerability of durvalumab + tremelimumab given either sequentially (SEQ) or concurrently (CON). Methods Patients with advanced solid tumours were enrolled and randomised to either SEQ tremelimumab 75 mg IV over 1 h followed by durvalumab 1500 mg IV over 1 h q4wks on the same day, or CON administration over 1 h. The serum pharmacokinetic profile of SEQ versus CON of durvalumab and tremelimumab administration was also evaluated. Results 14 patients either received SEQ (n = 7pts) or CON (n = 7 pts). There were no infusion related reactions. Drug related adverse events (AEs) were mainly low grade and manageable, and comparable in frequency between SEQ/CON- fatigue (43%/57%), rash (43%/43%), pruritus (43%/29%) and nausea (14%/29%). One patient in each cohort discontinued treatment due to toxicity. The PK profiles of durvalumab and tremelimumab were similar between CON and SEQ, and to historical reference data. Conclusions Concurrent administration of durvalumab and tremelimumab over 1 h is safe with a comparable PK profile to sequential administration.
Collapse
MESH Headings
- Adult
- Aged
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/adverse effects
- Antibodies, Monoclonal/blood
- Antibodies, Monoclonal/pharmacokinetics
- Antibodies, Monoclonal, Humanized/administration & dosage
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/blood
- Antibodies, Monoclonal, Humanized/pharmacokinetics
- Antineoplastic Agents, Immunological/administration & dosage
- Antineoplastic Agents, Immunological/adverse effects
- Antineoplastic Agents, Immunological/blood
- Antineoplastic Agents, Immunological/pharmacokinetics
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/pharmacokinetics
- Female
- Humans
- Immune Checkpoint Inhibitors/administration & dosage
- Immune Checkpoint Inhibitors/adverse effects
- Immune Checkpoint Inhibitors/blood
- Immune Checkpoint Inhibitors/pharmacokinetics
- Male
- Middle Aged
- Neoplasms/blood
- Neoplasms/drug therapy
- Neoplasms/metabolism
Collapse
|
106
|
Zhang JX, Liu CH, Li S, Song X. [The cutoff value of FEV(1)/FVC as the criteria of airway obstruction in children]. ZHONGHUA ER KE ZA ZHI = CHINESE JOURNAL OF PEDIATRICS 2020; 58:140-144. [PMID: 32102152 DOI: 10.3760/cma.j.issn.0578-1310.2020.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To explore the cutoff value of FEV(1)/FVC for evaluating obstructive ventilation dysfunction in children. Methods: Three hundred and eighty-three healthy children (190 boys and 193 girls) aged 6-14 years in primary and middle school in Beijing, who were enrolled from May 2010 to June 2011, had their spirometry done with the Jaeger lung function instrument, and the lower limit of normal (LLN) of FEV(1)/FVC was calculated. Two hundred and thirteen asthmatic children (151 boys and 62 girls) aged 6-14 years from the outpatient Department of Allergy, Capital Institute of Pediatrics were enrolled consecutively from June to July 2018, whose clinical history and pulmonary function parameters were collected. The expected value of spirometric parameters of asthmatic children was calculated according to Zapletal prediction equations. And the LLN of FEV(1)/FVC in healthy children was used as the gold standard to calculate the sensitivity, specificity, Youden index and Kappa value of FEV(1)/FVC<80% and FEV(1)/FVC< 92% predicted. Results: In healthy children, the FEV(1)/FVC and the LLN were 91%±5% and 82% respectively, while 90%±6% and 81% in boys, and 92%±5% and 84% in girls. There were 27 (12.7%) asthmatic children whose FEV(1)/FVC<80% but FEV(1)/FVC≥92% predicted (χ(2)=123.7, P<0.01). The sensitivity, specificity, Youden index and Kappa value of FEV(1)/FVC<80% were 80.3%, 100%, 0.803 and 0.787 respectively when FEV(1)/FVC<80% was used as the criteria to assess lung function, while they were 57.3%, 100%, 0.573 and 0.547, respectively, when FEV(1)/FVC<92% predicted was used as criteria. Conclusions: The 80% of FEV(1)/FVC has a better consistency with the LLN of FEV(1)/FVC than 92% of FEV(1)/FVC% predicted. It is more accarate to use FEV(1)/FVC<80% as the diagnostic criteria for airway obstruction.
Collapse
|
107
|
Petrella TM, Fletcher GG, Knight G, McWhirter E, Rajagopal S, Song X, Baetz TD. Systemic adjuvant therapy for adult patients at high risk for recurrent cutaneous or mucosal melanoma: an Ontario Health (Cancer Care Ontario) clinical practice guideline. Curr Oncol 2020; 27:e43-e52. [PMID: 32218667 PMCID: PMC7096195 DOI: 10.3747/co.27.5933] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background Previous versions of the guideline from the Program in Evidence-Based Care (pebc) at Ontario Health (Cancer Care Ontario) recommended that the use of high-dose interferon alfa 2b therapy be discussed and offered to patients with resected cutaneous melanoma with a high risk of recurrence. Subsequently, several clinical trials in patients with resected or metastatic melanoma found that immune checkpoint inhibitors and targeted therapies have a benefit greater than that with interferon. It was therefore considered timely for an update to the guideline about adjuvant systemic therapy in melanoma. Methods The present guideline was developed by the pebc and the Melanoma Disease Site Group (dsg). Based on a systematic review from a literature search conducted using medline, embase, and the Evidence Based Medicine Reviews databases for the period 1996 to 28 May 2019, the Working Group drafted recommendations. The systematic review and recommendations were then circulated to the Melanoma dsg and the pebc Report Approval Panel for internal review; the revised document underwent external review. Recommendations For patients with completely resected cutaneous or mucosal melanoma with a high risk of recurrence, the recommended adjuvant therapies are nivolumab, pembrolizumab, or dabrafenib-trametinib for patients with BRAF V600E or V600K mutations; nivolumab or pembrolizumab are recommend for patients with BRAF wild-type disease. Use of ipilimumab is not recommended. Molecular testing should be conducted to help guide treatment decisions. Interferon alfa, chemotherapy regimens, vaccines, levamisole, bevacizumab, bacillus Calmette-Guérin, and isolated limb perfusion are not recommended for adjuvant treatment of cutaneous melanoma except as part of a clinical trial.
Collapse
|
108
|
Li LM, Luo FJ, Song X. MicroRNA-370-3p inhibits cell proliferation and induces chronic myelogenous leukaemia cell apoptosis by suppressing PDLIM1/Wnt/β-catenin signaling. Neoplasma 2020; 67:509-518. [PMID: 31986893 DOI: 10.4149/neo_2020_190612n506] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 09/04/2019] [Indexed: 11/08/2022]
Abstract
Growing evidence has suggested that microRNA-370-3p (miR-370-3p) is downregulated and acts as a suppressor in several cancers. However, the role of miR-370-3p in chronic myeloid leukemia (CML) remains unknown. Here, the expression level and molecular mechanism of miR-370-3p in CML were investigated. Firstly, the expression of miR-370-3p has markedly decreased in the peripheral blood mononuclear cells (PBMCs) of patients with CML and in cell lines. Moreover, miR-370-3p in CML cells upregulated and downregulated proliferation and apoptosis, respectively. Notably, miR-370-3p directly targeted the 3'-untranslated region of PDZ and LIM domain protein 1 (PDLIM1). A negative correlation was observed between the levels of miR-370-3p and PDLIM1 in the PBMCs of patients with CML and healthy volunteers. PDLIM1 was shown to have an oncogenic role in CML cells by promoting proliferation and suppressing apoptosis. Finally, the miR-370-3p-PDLIM1-Wnt/β-catenin signaling axis was indicated to play an important role in CML progression.
Collapse
|
109
|
Kong X, Gao H, Song X, Deng Y, Zhang Y. Adsorption of phenol on porous carbon from Toona sinensis leaves and its mechanism. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.137046] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
110
|
Zhang Y, Gao H, Song X, Kong X, Xu H. Preparation of Hierarchical Porous Carbon from Wheat Bran for Free‐Standing Electrode of High Areal Capacitance Supercapacitor. ChemElectroChem 2019. [DOI: 10.1002/celc.201901440] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
111
|
Zhuang YY, Liu HJ, Song X, Ju Y, Peng H. A Linear Regression Predictor for Identifying N 6-Methyladenosine Sites Using Frequent Gapped K-mer Pattern. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 18:673-680. [PMID: 31707204 PMCID: PMC6849367 DOI: 10.1016/j.omtn.2019.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/19/2019] [Accepted: 10/03/2019] [Indexed: 01/07/2023]
Abstract
N6-methyladenosine (m6A) is one of the most common and abundant modifications in RNA, which is related to many biological processes in humans. Abnormal RNA modifications are often associated with a series of diseases, including tumors, neurogenic diseases, and embryonic retardation. Therefore, identifying m6A sites is of paramount importance in the post-genomic age. Although many lab-based methods have been proposed to annotate m6A sites, they are time consuming and cost ineffective. In view of the drawbacks of the intrinsic methods in RNA sequence recognition, computational methods are suggested as a supplement to identify m6A sites. In this study, we develop a novel feature extraction algorithm based on the frequent gapped k-mer pattern (FGKP) and apply the linear regression to construct the prediction model. The new predictor is used to identify m6A sites in the Saccharomyces cerevisiae database. It has been shown by the 10-fold cross-validation that the performance is better than that of recent methods. Comparative results indicate that our model has great potential to become a useful and effective tool for genome analysis and gain more insights for locating m6A sites.
Collapse
|
112
|
Tian R, Guo W, Guo Y, Zhang X, Zhu H, Shen F, Xu J, Zhang X, Wang R, Ren X, Li J, Song X. Apatinib combined with EGFR-TKI in treating advanced non-small cell lung cancer with EGFR-TKI resistance. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
113
|
Song X, Li J, Leuer J, Zhang J, Song X. First plasma scenario development for HL-2M. FUSION ENGINEERING AND DESIGN 2019. [DOI: 10.1016/j.fusengdes.2019.111254] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
114
|
Ernst D, McConkey H, Liu L, Butler M, Petrella T, Baetz T, Koneru R, Song X, Cheng T, Smylie M, Rajagopal S, Mihalcioiu C, Gwadry-Sridhar F. Utilization of real-world data to assess the effectiveness of immune checkpoint inhibitors (ICIs) in elderly patients with metastatic melanoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz255.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
115
|
Chen R, Jin Y, Li J, Zhang J, Fujimoto J, Lee W, Hu X, Chen Y, Behrens C, Chow C, Parra E, Little L, Gumbs C, Song X, Roarty E, Zhang J, Gibbons D, Heymach J, Lee J, William W, Glisson B, Wistuba I, Futreal P, Byers L, Reuben A, Chen M, Zhang J. OA15.04 Genomic and TCR Intratumor Heterogeneity of Small-Cell Lung Cancer by Multiregion Sequencing: An Association with Survival. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
116
|
Guo Y, Guo R, Cheng H, Wang H, Lou F, Cao S, Guo W, Song X. P2.14-42 Emergence of CCDC6-RET Fusion with Maintained EGFR T790M Mutation After Resistance to Osimertinib in NSCLC: A Case Report. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
117
|
Xu H, Shen H, Song X, Kong X, Zhang Y, Qin Z. Hydrothermal synthesis of porous hydrangea-like MnCo2O4 as anode materials for high performance lithium ion batteries. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113455] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
118
|
Bi J, Feng F, Li J, Mao J, Ning M, Song X, Xie J, Tang J, Li B. A C-type lectin with a single carbohydrate-recognition domain involved in the innate immune response of Tribolium castaneum. INSECT MOLECULAR BIOLOGY 2019; 28:649-661. [PMID: 30843264 DOI: 10.1111/imb.12582] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
C-type lectins are one of the pattern-recognition proteins involved in innate immunity in invertebrates. Although there are 16 C-type lectin genes that have been identified in the genome of Tribolium castaneum, their functions and mechanisms in innate immunity remain unknown. Here, we identified one C-type lectin orthologue, TcCTL6 (TC003708), by sequencing random clones from the cDNA library of the coleopteran beetle, T. castaneum. TcCTL6 contains a 654 bp open reading frame encoding a protein of 217 amino acids that includes a single carbohydrate-recognition domain. The expression of TcCTL6 was significantly induced by Escherichia coli, Staphylococcus aureus and stimulation with carbohydrates, including lipopolysaccharide and peptidoglycan. A binding assay suggested that the recombinant TcCTL6 not only bound to lipopolysaccharide and peptidoglycan but also bound to Gram-positive (S. aureus, Bacillus subtilis and Bacillus thuringiensis) and Gram-negative bacteria (E. coli and Pseudomonas aeruginosa) in the presence of calcium ions. Furthermore, when TcCTL6 was knocked down by RNA interference, four antimicrobial peptides (attacin1, attacin2, coleoptericin1 and coleoptericin2) were significantly decreased. These results demonstrate that TcCTL6 plays a vital role in the immune response towards pathogen infection by influencing the expression of antimicrobial peptides and the agglutination of bacteria in the presence of calcium ions in T. castaneum.
Collapse
|
119
|
Tian R, Song X, Guo Y, Zhang X, Guo W, Zhu H, Shen F, Xu J, Zhang X, Wang R, Ren X, Li J. P1.14-42 Apatinib Combined with EGFR - TKI in Treating Advanced Non-Small Cell Lung Cancer with EGFR - TKI Resistance (Data Updated). J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
120
|
Deng G, Song X, Greene MI. FoxP3 in T reg cell biology: a molecular and structural perspective. Clin Exp Immunol 2019; 199:255-262. [PMID: 31386175 PMCID: PMC7008219 DOI: 10.1111/cei.13357] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2019] [Indexed: 12/27/2022] Open
Abstract
Regulatory T cells (Tregs) are specialized in immune suppression and play a dominant role in peripheral immune tolerance. Treg cell lineage development and function maintenance is determined by the forkhead box protein 3 (FoxP3) transcriptional factor, whose activity is fine‐tuned by its post‐translational modifications (PTMs) and interaction partners. In this review, we summarize current studies in the crystal structures, the PTMs and interaction partners of FoxP3 protein, and discuss how these insights may provide a roadmap for new approaches to modulate Treg suppression, and new therapies to enhance immune tolerance in autoimmune diseases.
Collapse
|
121
|
Wang Y, Luo T, Song X, Li F. Electrospinning Preparation of NC/GAP/Submicron-HNS Energetic Composite Fiber and its Properties. ACS OMEGA 2019; 4:14261-14271. [PMID: 31508550 PMCID: PMC6733313 DOI: 10.1021/acsomega.9b01909] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/08/2019] [Indexed: 05/16/2023]
Abstract
In this work, novel three-dimensional nitrocellulose/glycidyl azide polymer/submicron-2,2', 4,4', 6,6'-hexanitro-stilbene (NC/GAP/submicron-HNS) composite fibers were prepared by the electrospinning method. As-prepared NC/GAP/submicron-HNS fibers were continuous and possessed a large specific surface area. The structure of fibers was characterized by energy-dispersive X-ray, X-ray photoelectron spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy (IR). The results showed that HNS submicron particles were uniformly loaded on the surface of NC/GAP fibers and incorporated with it. Thermal analyses were performed. Such NC/GAP/submicron-HNS fibers showed a low activation energy of 204 kJ·mol-1 and large rate constant of 1.74 s-1, indicating high reactivity and fast reaction rate. The result of TG-IR analysis revealed that the main decomposition products of NC/GAP/submicron-HNS were CO2, CO, H2O, N2O, few NO, and fragments such as -CH2O- and -CH-, which were low-signature gases. An evaluation on the energy performance disclosed that the standard specific impulse (I sp) of NC/GAP/submicron-HNS fibers was 2032 N·s·kg-1, which was higher than 2014 N·s·kg-1 of NC/GAP. This meant the addition of HNS submicron particles to the NC/GAP fiber was favorable to the improvement of energy performance. Additionally, introduction of submicron-HNS made the energetic fibers becoming very insensitive to impact action. It was expected that as-prepared NC/GAP/submicron-HNS membranes were promising materials applied for solid rocket propellant.
Collapse
|
122
|
Huang R, Song X, Wang CM. MiR-223 regulates CDDP resistance in pancreatic cancer via targeting FoxO3a. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 23:7892-7898. [PMID: 31599414 DOI: 10.26355/eurrev_201909_19000] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE FoxO3a is a well-defined tumor suppressor gene in the forkhead transcription factor O subfamily (FoxO), and its reduction is related to the occurrence of various tumors. It was found that miR-223 expression is abnormally elevated in pancreatic cancer tissues. Bioinformatics analysis revealed a targeted complementary binding relationship between miR-223 and FoxO3a. This study explored whether miR-155 regulates the expression of FoxO3a and affects the proliferation, apoptosis, and cisplatin (CDDP) resistance of oral cancer cells. MATERIALS AND METHODS Dual-Luciferase reporter gene assay validated the targeted relationship between miR-223 and FoxO3a. The CDDP-resistant pancreatic cancer cell line BXPC3/CDDP was established, and the expressions of miR-223 and FoxO3a were compared. BXPC3/CDDP cells were divided into miR-NC group and miR-223 inhibitor group. QRT-PCR was adopted to test miR-223 and FoxO3a mRNA expressions. Western blot was performed to determine FoxO3a protein expression. Cell apoptosis was detected by flow cytometry and cell proliferation was detected by EdU staining. RESULTS There was a targeted regulatory relationship between miR-223 and FoxO3a mRNA. The expression of miR-223 was significantly higher, while the expression of FoxO3a mRNA and protein was significantly lower in BXPC3/CDDP cells than that in BXPC3 cells. Cell Counting Kit-8 (CCK-8) experiments showed that the same concentration of CDDP exhibited significantly lower proliferation inhibition in BXPC3/CDDP cells than BXPC3 cells. Compared with miR-NC group, transfection of miR-223 inhibitor significantly increased the expression of FoxO3a in BXPC3/CDDP cells, which significantly attenuated cell proliferation and enhanced apoptosis in CDDP-treated cells. CONCLUSIONS Increased expression of miR-233 was associated with CDDP resistance in pancreatic cancer cells. Inhibition of miR-223 expression upregulated FoxO3a expression, restrained pancreatic cancer cell proliferation, promoted cell apoptosis, and enhanced CDDP sensitivity in pancreatic cancer cells.
Collapse
|
123
|
Yu Y, Fan D, Song X, Chen L, Kang J, Tsai C, McBride S, Sherman E, Fetten J, Dunn L, Lee N, Riaz N. TERT Promoter Mutations Among Oral Cavity Cancers: A Pattern of Failure Analysis. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
124
|
Song X, Nardon E, Heumann H, Faugeras B. Automatic identification of the plasma equilibrium operating space in tokamaks. FUSION ENGINEERING AND DESIGN 2019. [DOI: 10.1016/j.fusengdes.2019.02.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
125
|
Hajra SG, Liu C, Sepehri K, Proulx R, Song X, Badragan I, D'Arcy R, Murray D, Krauze A. Towards Improved Medical Imaging Analysis for Oncology Care: Clinical Experience with Simulation Platform for Brain Tumors. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|