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Qu L, Zhong M, Duan F, Li X, Yang J, Zhou Q, Tang D, He R, Liu X, Zhao X. The PHYB-FOF2-VOZ2 module functions to fine-tune flowering in response to changes in light quality by modulating FLC expression in Arabidopsis. Plant Commun 2024:100922. [PMID: 38616490 DOI: 10.1016/j.xplc.2024.100922] [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] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 02/06/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
Proper timing for plants to flower under different environmental conditions is critical for their propagation. Light quality is a pivotal environmental cue that plays a critical role in regulating flowering. Plants tend to flower late under light with high red (R)/far-red (FR) light ratio, whereas flower early under light with a low R/FR light ratio. However, how plants fine-tune flowering in response to changes in light quality is not well understood. Here, we demonstrate that the F-box Protein F-box of Flowering 2 (FOF2), an autonomous pathway-related regulator, physically interacts with VASCULAR PLANT ONE-ZINC FINGER 1 and 2 (VOZ1 and VOZ2), which are the direct downstream factors of R/FR light receptor phytochrome B (PHYB). Furthermore, we show that PHYB physically interacts with FOF2 and mediates FR light and end-of-day far-red light (EOD-FR) stabilization of the FOF2 protein and enhances FOF2 binding to VOZ2, leading to VOZ2 protein degradation by SCFFOF2 E3 ligase. In contrast, PHYB mediates R light and end-of-day red light (EOD-R) degradation of FOF2 protein. Genetic interaction studies demonstrate that FOF2 functions downstream of PHYB to promote FLC expression and inhibit flowering under both high R/FR light and simulated shade conditions, which partially depend on VOZ proteins. Taken together, our findings suggest a novel mechanism whereby plants fine-tune flowering time through PHYB-FOF2-VOZ2 module that modulates FLC expression in response to changes in light quality.
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Affiliation(s)
- Lina Qu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Ming Zhong
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Feifei Duan
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Xinmei Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Jiaxin Yang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Quanyu Zhou
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Dongying Tang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China
| | - Reqing He
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China
| | - Xuanming Liu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China.
| | - Xiaoying Zhao
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China.
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2
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Shi F, Zhang K, Cheng Q, Che S, Zhi S, Yu Z, Liu F, Duan F, Wang Y, Yang N. Molecular mechanism governing RNA-binding property of mammalian TRIM71 protein. Sci Bull (Beijing) 2024; 69:72-81. [PMID: 38036331 DOI: 10.1016/j.scib.2023.11.041] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/21/2023] [Accepted: 11/16/2023] [Indexed: 12/02/2023]
Abstract
TRIM71 is an RNA-binding protein with ubiquitin ligase activity. Numerous functions of mammalian TRIM71, including cell cycle regulation, embryonic stem cell (ESC) self-renewal, and reprogramming of pluripotent stem cells, are related to its RNA-binding property. We previously reported that a long noncoding RNA (lncRNA) Trincr1 interacts with mouse TRIM71 (mTRIM71) to repress FGF/ERK pathway in mouse ESCs (mESCs). Herein, we identify an RNA motif specifically recognized by mTRIM71 from Trincr1 RNA, and solve the crystal structure of the NHL domain of mTRIM71 complexed with the RNA motif. Similar to the zebrafish TRIM71, mTRIM71 binds to a stem-loop structured RNA fragment of Trincr1, and an adenosine base at the loop region is crucial for the mTRIM71 interaction. We map similar hairpin RNAs preferably bound by TRIM71 in the mRNA UTRs of the cell-cycle related genes regulated by TRIM71. Furthermore, we identify key residues of mTRIM71, conserved among mammalian TRIM71 proteins, required for the RNA-binding property. Single-site mutations of these residues significantly impair the binding of TRIM71 to hairpin RNAs in vitro and to mRNAs of Cdkn1a/p21 and Rbl2/p130 in mESCs. Furthermore, congenital hydrocephalus (CH) specific mutation of mTRIM71 impair its binding to the RNA targets as well. These results reveal molecular mechanism behind the recognition of RNA by mammalian TRIM71 and provide insights into TRIM71 related diseases.
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Affiliation(s)
- Fandi Shi
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China
| | - Kun Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China
| | - Qixuan Cheng
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing 100871, China
| | - Shiyou Che
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China; College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Shuxin Zhi
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China
| | - Zhenyu Yu
- National Laboratory of Biomacromolecules and Key Laboratory of Epigenetic Regulation and Intervention, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Fei Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China
| | - Feifei Duan
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing 100871, China
| | - Yangming Wang
- Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing 100871, China.
| | - Na Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China.
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3
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Zhang H, Zhang W, Xiang F, Zhang Z, Guo Y, Chen T, Duan F, Zhou Q, Li X, Fang M, Li X, Li B, Zhao X. Photosynthetic characteristics and genetic mapping of a new yellow leaf mutant crm1 in Brassica napus. Mol Breed 2023; 43:80. [PMID: 37954030 PMCID: PMC10635920 DOI: 10.1007/s11032-023-01429-6] [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] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
Chlorophyll is one of the key factors for photosynthesis and plays an important role in plant growth and development. We previously isolated an EMS mutagenized rapeseed chlorophyll-reduced mutant (crm1), which had yellow leaf, reduced chlorophyll content and fewer thylakoid stacks. Here, we found that crm1 showed attenuated utilization efficiency of both light energy and CO2 but enhanced heat dissipation efficiency and greater tolerance to high-light intensity. BSA-Seq analysis identified a single nucleotide change (C to T) and (G to A) in the third exon of the BnaA01G0094500ZS and BnaC01G0116100ZS, respectively. These two genes encode the magnesium chelatase subunit I 1 (CHLI1) that catalyzes the insertion of magnesium into protoporphyrin IX, a pivotal step in chlorophyll synthesis. The mutation sites resulted in an amino acid substitution P144S and G128E within the AAA+ domain of the CHLI1 protein. Two KASP markers were developed and co-segregated with the yellow leaf phenotype in segregating F2 population. Loss of BnaA01.CHLI1 and BnaC01.CHLI1 by CRISPR/Cas9 gene editing recapitulated the mutant phenotype. BnaA01.CHLI1 and BnaC01.CHLI1 were located in chloroplast and highly expressed in the leaves. Furthermore, RNA-seq analyses revealed the expression of chlorophyll synthesis-related genes were upregulated in the crm1 mutant. These findings provide a new insight into the regulatory mechanism of chlorophyll synthesis in rapeseed and suggest a novel target for improving the photosynthetic efficiency and tolerance to high-light intensity in crops. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-023-01429-6.
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Affiliation(s)
- Hui Zhang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125 China
| | - Wei Zhang
- College of Agronomy, Hunan Agricultural University, Changsha, 410128 Hunan China
| | - Fujiang Xiang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
| | - Zhengfeng Zhang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
| | - Yiming Guo
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125 China
| | - Tingzhou Chen
- Hunan Cotton Research Institute, Changde, 415100 Hunan China
| | - Feifei Duan
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
| | - Quanyu Zhou
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
| | - Xin Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
| | | | - Xinmei Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
| | - Bao Li
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125 China
| | - Xiaoying Zhao
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Engineering and Technology Research Center of Hybrid Rapeseed, Hunan University, Changsha, 410082 China
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Fu JX, Wang M, Duan F, Yan J, Wang Y, Yuan B, Ye H. Contrast-enhanced magnetic resonance angiography in the identification of prostatic arterial anatomy in patients with benign prostatic hyperplasia: prospective comparison with digital subtraction angiography. Clin Radiol 2023; 78:e169-e176. [PMID: 36650079 DOI: 10.1016/j.crad.2022.09.121] [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] [Received: 04/05/2022] [Revised: 08/03/2022] [Accepted: 09/21/2022] [Indexed: 01/19/2023]
Abstract
AIM To evaluate the utility of contrast-enhanced magnetic resonance angiography (CE-MRA) for identifying prostatic artery (PA) anatomy in patients with benign prostatic hyperplasia (BPH) before PA embolisation (PAE), using digital subtraction angiography (DSA) as the reference standard. MATERIALS AND METHODS A total of 176 patients underwent pelvic CE-MRA at 3 T. DSA was performed within the following 7 days. Two interventional radiologists compared the CE-MRA findings with DSA findings to assess the anatomy of the PAs. The rates of correct identification of the origins and collaterals of the PAs by CE-MRA were calculated. The utility for predicting the optimal X-ray tube angle obliquity for visualising the origins of the PAs by CE-MRA was evaluated. An exact McNemar's test was used to compare the detection rates of the PAs and the collaterals with DSA versus CE-MRA. A two-sided p-value of <0.05 was considered statistically significant. RESULTS Of the 376 PAs identified by DSA, CE-MRA correctly identified the origins of 369 vessels (98.1%), with a 1.9% false-negative rate and no false-positive results. Of the 57 total collaterals identified by DSA, CE-MRA identified 50 vessels correctly (87.7%), with a 12.3% false-negative rate and no false-positive results. No significant differences were observed between CE-MRA and DSA in the identification of the PA origins (p=0.824) and the collaterals (p=0.327). The optimal degree for an oblique projection to visualise the origins of the PAs could be predicted accurately (100%) by pre-procedural CE-MRA. CONCLUSION CE-MRA before PAE can reliably predict the PA anatomy and facilitate procedural planning.
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Affiliation(s)
- J X Fu
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, PR China
| | - M Wang
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, PR China.
| | - F Duan
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, PR China
| | - J Yan
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Y Wang
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, PR China
| | - B Yuan
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, PR China
| | - H Ye
- Department of Diagnostic Radiology, Chinese PLA General Hospital, Beijing 100853, PR China
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5
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Xu JE, Qi XK, Yao S, Han XC, Liu JG, Duan F, Sun CJ. [Motor neuron damage in late-onset Pompe disease: a case report and literature review]. Zhonghua Nei Ke Za Zhi 2023; 62:200-202. [PMID: 36740412 DOI: 10.3760/cma.j.cn112138-20220310-00167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- J E Xu
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - X K Qi
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - S Yao
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - X C Han
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - J G Liu
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - F Duan
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - C J Sun
- Department of Neurology, the Sixth Medical Center of PLA General Hospital, Beijing 100048, China
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Montazari E, Abdel-Wahab N, Johnson D, Spillson C, Elsayes K, Duan F, Yadav S, Allison J, Sharma P, Diab A. 151P Clinical outcome and preliminary immune analysis of phase II clinical trial of combination of tocilizumab with ipilimumab and nivolumab for patients with treatment naïve metastatic melanoma. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Duan F, Yang X, Ju C, Zhao J, Gao X, Chen SS. Abstract 590: Humanized PD-1/LAG-3 mice for preclinical evaluation of combination therapy. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-590] [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: 11/16/2022]
Abstract
Abstract
Lymphocyte activation gene 3 (LAG-3) is a member of the immunoglobulin superfamily which shares homolog with CD4 and binds to MHC II with higher affinity. It is expressed on activated T cells, regulatory T cells (Tregs), natural killer cells and plasmacytoid dendritic cells, and inhibits their activation. Blocking LAG-3 activity is expected to provide therapeutic benefits in the treatment of cancer, especially when combined with PD-1 blockade. Due to the low homology between human and mouse LAG-3 and PD-1 and in order to enable increased translatability of preclinical in-vivo efficacy evaluation of immune checkpoint antibodies, we generated double humanized mice by replacing the extracellular domain of mouse LAG-3 and PD-1 with the corresponding human sequences.
Homozygous double humanized mice express chimeric LAG-3 and PD-1 at comparable levels to mouse LAG-3 and PD-1 respectively in wildtype mice. When treated with human LAG-3 antibody (anti-LAG-3) or human PD-1 antibody (anti-PD-1), CT26 tumor growth was inhibited in a dose-dependent manner, proving that both humanized proteins are functional. However, not all tumor types respond to anti-LAG-3 or anti-PD-1 the same. To identify the suitable tumor models for preclinical efficacy evaluation of anti-LAG-3 and anti-PD-1 combo therapy, we engrafted several syngeneic tumor models onto our mice. The growth of subcutaneously engrafted MC38 colon tumor was mildly inhibited by anti-PD-1, but strongly inhibited in the presence of anti-LAG-3. Similarly, B16F10 melanoma tumor showed modest growth inhibition when treated with anti-PD-1 or anti-LAG-3 separately, while combination therapy significantly repressed tumor growth. However, neither monotherapies of anti-LAG-3 and anti-PD-1 nor combination treatment effectively inhibited tumorigenesis of LLC1 derived lung cancer, indicating that this tumor is likely insensitive to PD-1 and LAG-3 blockade. Collectively, these data indicate that double humanized PD-1 and LAG-3 mice are a powerful tool to evaluate the therapeutic efficacies of anti-hPD-1 and anti-hLAG-3 treatment in different types of tumor in vivo.
Citation Format: Feifei Duan, Xiaoliu Yang, Cunxiang Ju, Jing Zhao, Xiang Gao, Santi Suryani Chen. Humanized PD-1/LAG-3 mice for preclinical evaluation of combination therapy [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 590.
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Affiliation(s)
| | | | | | - Jing Zhao
- 1GemPharmatech Co., Ltd, Nanjing Shi, China
| | - Xiang Gao
- 1GemPharmatech Co., Ltd, Nanjing Shi, China
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8
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Zeba F, Yanning W, Melek J, Duan F, Atalay MK, Jankowich M, Rounds S. Prognostic Significance of Pulmonary Artery to Aorta Ratio and Other CT Markers in Pulmonary Fibrosis With and Without Emphysema. Lung 2021; 199:677-680. [PMID: 34741227 DOI: 10.1007/s00408-021-00490-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/25/2021] [Indexed: 11/28/2022]
Abstract
Pulmonary hypertension (PH) is associated with decreased survival in patients with pulmonary fibrosis and combined pulmonary fibrosis and emphysema. Main pulmonary artery (PA) diameter and PA diameter/ascending aortic diameter (PA/AA) ratio, as measured on CT, have recently emerged as specific markers for PH. Our single-center retrospective study found that PA/AA ratio > 1 is associated with decreased survival in individuals with pulmonary fibrosis, with or without emphysema. Our study also describes markers of cardiac remodeling, and the echocardiographic diagnosis of PH in this patient population.
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Affiliation(s)
- F Zeba
- Pulmonary Critical Care Medicine, Dartmouth Hitchcock Medical Center, Lebanon, USA.
| | - W Yanning
- Biostatistics and Center for Statistical Sciences, School of Public Health, Brown University, Providence, USA
| | - J Melek
- Health Informatics, Providence VA Medical Center, Providence, USA
| | - F Duan
- Biostatistics and Center for Statistical Sciences, School of Public Health, Brown University, Providence, USA
| | - M K Atalay
- Diagnostic Imaging and Cardiology, The Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, USA
| | - M Jankowich
- Vascular Research Laboratory, Pulmonary Critical Care Medicine, Providence VA Medical Center, The Warren Alpert Medical School of Brown University, Providence, USA
| | - S Rounds
- Vascular Research Laboratory, Pulmonary Critical Care Medicine, Providence VA Medical Center, The Warren Alpert Medical School of Brown University, Providence, USA
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Zhao S, Yang J, Duan F, Zhang B, Liu Y, Zhang B, Chen C, Qin Y. Rational construction of porous N-doped Fe 2O 3 films on porous graphene foams by molecular layer deposition for tunable microwave absorption. J Colloid Interface Sci 2021; 598:45-55. [PMID: 33894616 DOI: 10.1016/j.jcis.2021.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 01/14/2021] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 10/21/2022]
Abstract
Graphene-based materials with porous microstructure have attracted immense attentions due to their wide application in microwave absorption. However, constructing magnetic film with both porous microstructure and uniform pore size by using traditional methods still remains a challenge. To overcome this problem, we reported a facile strategy of molecular layer deposition (MLD) for successfully fabrication of the hybrid-architecture of porous graphene foams and nitrogen-doped porous Fe2O3 films. The surfaces of porous graphene foams are uniformly covered by porous Fe2O3 films without aggregation and the pore structures are widely distributed. The porous graphene-based composites exhibit remarkably enhanced microwave absorption performance compared to the pristine graphene foams. The minimum reflection loss value is increased by approximately 8 times, reaching -64.36 dB with a thickness of only 2.18 mm. More importantly, the absorption property can be precisely modulated by tuning the MLD cycle numbers and effective absorption bandwidth covers 3.04-18.0 GHz by adjusting the thickness from 1.0 to 5.0 mm. This work provides new insights for exploring novel and high-performance graphene-based microwave absorbents and offers a new idea to rationally design three-dimensional composites with porous magnetic films.
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Affiliation(s)
- Shichao Zhao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Jie Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feifei Duan
- Shanxi Institute of Energy, Taiyuan 030001, China
| | - Baiyan Zhang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yequn Liu
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Bin Zhang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chaoqiu Chen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Qin
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
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10
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Guo W, Wang S, Zhang X, Shi M, Duan F, Hao J, Gu K, Quan L, Wu Y, Liang Z, Wang Y. Acidic pH transiently prevents the silencing of self-renewal and dampens microRNA function in embryonic stem cells. Sci Bull (Beijing) 2021; 66:1319-1329. [PMID: 36654154 DOI: 10.1016/j.scib.2021.03.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/18/2020] [Accepted: 11/02/2020] [Indexed: 02/07/2023]
Abstract
Enhanced glycolysis is a distinct feature associated with numerous stem cells and cancer cells. However, little is known about its regulatory roles in gene expression and cell fate determination. Here, we confirm that glycolytic metabolism and lactate production decrease during the differentiation of mouse embryonic stem cells (mESCs). Importantly, acidic pH due to lactate accumulation can transiently prevent the silencing of mESC self-renewal in differentiation conditions. Furthermore, acidic pH partially blocks the differentiation of human ESCs (hESCs). Mechanistically, acidic pH downregulates AGO1 protein and de-represses a subset of mRNA targets of miR-290/302 family of microRNAs which facilitate the exit of naive pluripotency state in mESCs. Interestingly, AGO1 protein is also downregulated by acidic pH in cancer cells. Altogether, this study provides insights into the potential function and underlying mechanism of acidic pH in pluripotent stem cells (PSCs).
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Affiliation(s)
- Wenting Guo
- Department of Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China; Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China.
| | - Shaohua Wang
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Xiaoshan Zhang
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Ming Shi
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Feifei Duan
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Jing Hao
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Kaili Gu
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Li Quan
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Yixia Wu
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China
| | - Zhiyong Liang
- Department of Pathology, Molecular Pathology Research Centre, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Yangming Wang
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing 100871, China.
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Duan F, Tang J, Kong FL, Zou HW, Ni BL, Yu JC. Identification of PTK7 as a promising therapeutic target for thyroid cancer. Eur Rev Med Pharmacol Sci 2021; 24:6809-6817. [PMID: 32633373 DOI: 10.26355/eurrev_202006_21670] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To evaluate the possible involvement of PTK7 in the progression of human thyroid cancer and assess its potential effects on the proliferation and apoptosis of thyroid cancer. PATIENTS AND METHODS Immunohistochemical (IHC) assays and clinical significance analysis were performed to explore the correlations between PTK7 expression and clinical characteristics of patients with thyroid cancer. Quantitative PCR assays and Immunoblot assays were performed to detect the expression of PTK7 in control or PTK7 shRNA plasmids transfected thyroid cancer cells. MTT assays were performed to detect the effects on the proliferation of thyroid cancer cells. Flow cytometry (FCM) assays were performed to assess the changes in cell apoptosis of thyroid cancer. Additionally, the effects of PTK7 on tumor growth were detected through in vivo tumor growth assays. RESULTS PTK7 is highly expressed in human thyroid cancer tissues, and its expression levels are associated with the clinical characteristics, including TNM stage (p=0.015*), and intraglandular dissemination (p=0.024*) of patients with thyroid cancer. PTK7 ablation inhibits cell proliferation and stimulates cell apoptosis of thyroid cancer in vitro. Additionally, PTK7 contributes to tumor growth of thyroid cancer cells in mice. CONCLUSIONS We demonstrated the involvement of PTK7in the progression of thyroid cancer, and therefore provided a novel and promising therapeutic target for thyroid cancer treatment.
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Affiliation(s)
- F Duan
- Department of Otolaryngology Head and Neck Surgery, Jiujiang First People's Hospital, Jiujiang, China.
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Duan F, Chen J, Yao H, Wang Y, Jia Y, Ling Z, Feng Y, Pan Z, Yin Y, Jiao X. Enhanced therapeutic efficacy of Listeria-based cancer vaccine with codon-optimized HPV16 E7. Hum Vaccin Immunother 2021; 17:1568-1577. [PMID: 33449866 DOI: 10.1080/21645515.2020.1839291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Cervical cancer is a leading cause of high mortality in women in developing countries and has a serious impact on women's health. Human papilloma virus (HPV) prophylactic vaccines have been produced and may hold promise for reducing the incidence of cervical cancer. However, the limitations of current HPV vaccine strategies make the development of HPV therapeutic vaccines particularly important for the treatment of HPV related lesions. Our previous work has demonstrated that LM4Δhly::E7 was safe and effective in inducing antitumor effect by antigen-specific cellular immune responses and direct killing of tumor cell on a cervical cancer model. In this study, the codon usage effect of a novel Listeria-based cervical cancer vaccine LM4Δhly::E7-1, was evaluated for effects of codon-optimized E7 expression, cellular immune response and therapeutic efficacy in a tumor-bearing murine model. Our data demonstrated that up-regulated expression of E7 was strikingly elevated by codon usage optimization, and thus induced significantly higher Th1-biased immunity, lymphocyte proliferation, and strong specific CTL activity ex-vivo compared with LM4Δhly::E7-treated mice. Furthermore, LM4Δhly::E7-1 enhanced a remarkable therapeutic effect in establishing tumors. Taken together, our results suggest that codon usage optimization is an important consideration in constructing live bacterial-vectored vaccines and is required for promoting effective T cell responses.
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Affiliation(s)
- Feifei Duan
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Jiaqi Chen
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Hao Yao
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Yuting Wang
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Yanyan Jia
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Zhiting Ling
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Youwei Feng
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Zhiming Pan
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Yuelan Yin
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Xin'An Jiao
- Jiangsu Key Laboratory of Zoonosis, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, MOA of China, Joint International Research Laboratory of Agriculture and Agri-Product Safety, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, Jiangsu Province, China
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Kong T, Chen L, Duan F, Wang L, Zhao X, Hou X, Zhou H, Miao W, Wang L, Hu S. 1797P Efficacy and safety analysis of EP / EC regimen combined with first-line anlotinib hydrochloride in the treatment of extensive small cell lung cancer: Results from a phase II single-arm trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1558] [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] Open
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Tan S, Li Q, Duan F, Yuan Q, Deng G. Mechanism of Tripchlorolide Inhibiting Hedgehog Signaling Pathway to Delay Lung Fibrosis. J BIOMATER TISS ENG 2020. [DOI: 10.1166/jbt.2020.2346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background: The paper aimed to determine whether Tripchlorolide can exert anti-fibrotic effects by up-regulating Sufu to influence the Hedgehog signaling pathway, and to promote the application of Tripchlorolide in diseases associated with the Hedgehog signaling pathway. Material
and Methods: In vivo experiment, bronchoalveolar lavage was performed on the 7th day after intratracheal instillation of bleomycin. The number of inflammatory cells and IL-6 levels were analyzed to observe the anti-inflammatory effect of Tripchlorolide. The lung tissues were obtained
on the 14th day. The lung tissue injury was observed, and the expressions of a-SMA, collagen I, TGF-β i, Gli 1 and Sufu were determined. In vitro experiments, mouse lung was transfected with lentivirus to make fibroblasts. The Sufii was overexpressed, the changes in Gli 1 and Gli 2 levels
were observed. The effects of the overexpressed Sufti of on the phenotype transformed a-SMA and collagen I levels in TGF-β 1 induced mouse lung fibroblasts were observed. Results: After administration with bleomycin, IL-6 level, total number of cells, neutrophils and macrophages
in BALF of the Tripchlorolide group mice were reduced. The lung injury score, the expressions of lung tissue TGF-βl, a-SMA and Collagen I were low. The expression of Sufu was high, while the expression of Gli 1 was low. Compared with the groups in which cells were not transfected with
lentivirus, the expression of Sufu in the transfected cells increased, and the expressions of Gli 1 and Gli 2 decreased. After stimulation with TGF-β Sufu decreased. Conclusion: Tripchlorolide can inhibit Hedgehog signaling pathway by up-regulating Sufu to exert an anti-fibrotic
effect.
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Yuan B, Wang Y, Zhang JL, Yan JY, Yuan K, Wang XQ, Fu JX, Duan F, Wang MQ. [Value of lenvatinib for the treatment of advanced hepatocellular carcinoma]. Zhonghua Yi Xue Za Zhi 2020; 100:833-836. [PMID: 32234154 DOI: 10.3760/cma.j.cn112137-20190818-01832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To observe the safety and efficacy of lenvatinib for the treatment of medium-advanced hepatocellular carcinoma. Methods: A total of 36 patients with medium-advanced hepatocellular carcinoma from the First Medical Center of the Chinese PLA General Hospital were retrospectively analyzed from January 2018 to May 2019. All patients had shown tumor progression after at least 2 sessions of TACE. The patients were consisted of 30 males and 6 females with age range of 35 to 76 (54±10) years. Patients received orally administered lenvatinib at a dose of 12 mg once daily for patients ≥ 60 kg and 8 mg once daily for patients<60 kg. According to modified RECIST criteria the tumor response, disease control rate, overall survival and progression free survival were evaluated once every 6-8 weeks. The adverse events were recorded. Results: No patient was in complete response, 2 cases (5.7%) in partial response, and 5 cases (14.3%) in stable disease, respectively. Disease control rate was 20.0% (7/35), the overall survival was 11.5 months, and the progression free survival was 5.3 months. The overall incidence of adverse events was 66.7% (24/36). The most frequent adverse events were hypertension, proteinuria, hand-foot skin reaction and abdominal distension. Conclusion: Lenvatinib can extend the overall survival in a percentage of medium-advanced hepatocellular carcinoma patients who were unresectable and refractory to TACE. Although the incidence of adverse events is high, most of them are mild and reversible.
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Affiliation(s)
- B Yuan
- Department of Interventional Radiology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Zhu Y, Qiu X, Yu T, Zhang C, Zhao X, Duan F, Hao D. Feasibility of three-dimensional constructive interference in steady state sequences for evaluating the anterolateral ligament. Clin Radiol 2019; 74:978.e9-978.e14. [PMID: 31582170 DOI: 10.1016/j.crad.2019.08.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 08/20/2019] [Indexed: 11/24/2022]
Abstract
AIM The purpose of the study was to determine the feasibility of three-dimensional (3D) constructive interference in steady state (CISS) sequences for evaluating the anterolateral ligament (ALL). MATERIALS AND METHODS Magnetic resonance imaging (MRI) of the right knee joint in 30 healthy volunteers was performed using a 3 T MRI machine. Axial T2-weighted imaging with fat saturation (T2WI-FS), coronal proton-density-weighted imaging with fat saturation (PDWI-FS), and 3D-CISS were included in the protocol. Multiplanar reconstruction (MPR) and rotating stretched curved planar reconstructions (CPRs) of the ALL at 30°, 60°, 90°, 120°, and 150° were generated from the 3D-CISS images. The visibility of the femoral part, meniscal part, tibial part, meniscal insertion, femoral footprint, and tibial footprint of the ALL on the imaging of all sequences was recorded. RESULTS Based on the CPR of 3D-CISS MRI, the presence of tibial and femoral footprints of the ALL was rated superior to MPR and PDWI-FS (96.67% and 96.67%, respectively; p<0.017). Rotating CPR of 3D-CISS MRI imaging was rated superior to PDWI-FS with respect to the tibial part, meniscal part, and meniscal insertion of the ALL (96.67%, 83.33%, and 83.33%, respectively; p<0.05). Rotating CPR of 3D-CISS MRI was rated superior to PDWI-FS with respect to the femoral part of the ALL, but the difference was not statistically significant (p=0.095). The angle between the ALL and lateral collateral ligament (LCL) on the oblique sagittal image was 18.34±1.88°. CONCLUSIONS The MRI 3D-CISS sequences significantly enhanced the ability to identify the ALL compared to the 2D MRI sequences.
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Affiliation(s)
- Y Zhu
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - X Qiu
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
| | - T Yu
- Department of Sport Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
| | - C Zhang
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - X Zhao
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - F Duan
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - D Hao
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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Campbell M, Martin S, Tam A, Sheth R, Singh S, Ahrar K, Slack Tidwell B, Rao P, Karam J, Wood C, Tannir N, Jonasch E, Gao J, Shah A, Blando J, Duan F, Basu S, Allison J, Sharma P, Singh S. A pilot study of tremelimumab (treme) with or without cryoablation (cryo) in patients (pts) in metastatic renal cell carcinoma (mRCC). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz249.059] [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: 11/14/2022] Open
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Peikert T, Duan F, Rajagopalan S, Karwoski R, Balar A, Lakhani D, Antic S, Bartholmai B, Tucker J, Massion P, Maldonado F. OA06.06 Independent Validation of a Novel High-Resolution Computed Tomography-Based Radiomic Classifier for Indeterminate Lung Nodules. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhang JL, Wang MQ, Duan F, Yuan B. [A comparative study of prostatic artery embolization in the treatment of benign prostatic hyperplasia with different prostatic volume]. Zhonghua Yi Xue Za Zhi 2019; 99:2435-2439. [PMID: 31434423 DOI: 10.3760/cma.j.issn.0376-2491.2019.31.006] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the efficacy of prostatic artery embolization (PAE) in the treatment of patients with benign prostatic hyperplasia (BPH) with different prostatic volume (PV). Methods: In this single-center, retrospective study, 137 patients, mean age (70±11) years, range 50-89 years, undergoing PAE for BPH between January 2015 and May 2017 in Chinese PLA General Hospital were involved and divided into three groups according to the PV (group A, >80 ml; group B, 40-80 ml; group C, <40 ml). The changes of international prostate symptoms (IPSS) score, quality of life (QoL) score, and maximum urinary flow rate (Q(max)) were compared among the three groups at 1, 6, and 12 months post-PAE. Correlation between the proportion of prostate ischemia at 1 month post-PAE and the proportion of PV reduction at 12 month post-PAE were analyzed, also the correlation between both of them with IPSS and QoL score were analyzed, respectively. Results: Mean baseline prostate volumes were 110 ml in group A (n=62), 67 ml in group B (n=47) and 33 ml in group C (n=28). At 12 months post-PAE, the outcomes of IPSS score and Q(max) in group A were better than those in group B and C (all P<0.05).The proportion of prostate ischemia at 1 month post-PAE and proportion of PV reduction at 12 month post-PAE in group A, B, and C were 61.4%, 49.3%, 38.0%, and 47.3%, 29.3%, 24.6%, respectively. The proportion of prostate ischemia in group A was larger than that in group B and C (P=0.049, 0.004), also the proportion of PV reduction in group A was greater than that in group B and C (P<0.01). The proportion of prostate ischemia at 1 month post-PAE in all three groups were positively correlated with the proportion of PV reduction at 12 month post-PAE (r=0.699, P=0.024; r=0.719, P=0.019; r=0.821, P=0.004), and there were positive correlations between both of them and the improvement of IPSS score at 12 month post-PAE (0.5<r<1.0, all P<0.05), while no correlation with the improvement of QoL score. Conclusions: Patients with BPH with PV larger than 80 ml are more suitable for PAE. The proportion of prostate ischemia and prostate volume reduction after PAE can predict the efficacy of PAE.
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Affiliation(s)
- J L Zhang
- The School of Medicine, Nankai University, Tianjin 300071, China
| | - M Q Wang
- The School of Medicine, Nankai University, Tianjin 300071, China
| | - F Duan
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, China
| | - B Yuan
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, China
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Zhang JL, Wang MQ, Duan F, Ye HY, Shen YG, Sun CJ, Zhang XJ, Li ZQ, Jiang WH, Yuan K. [Significance of pelvic contrast enhanced MRA prior to prostatic artery embolization]. Zhonghua Yi Xue Za Zhi 2019; 98:3848-3852. [PMID: 30585028 DOI: 10.3760/cma.j.issn.0376-2491.2018.47.007] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To assess the values of pelvic contrast enhanced magnetic resonance angiography (MRA) in detection of prostatic artery prior to prostatic arterial embolization(PAE). Methods: This multicenter, prospective study from 5 hospitals in China consisted of 47 patients (mean age (69±16) years, range 56-83 years) who underwent PAE for benign prostatic hyperplasia (BPH) between January 2016 and April 2018, preprocedural prediction of prostatic arteries were determined using contrast enhanced MRA.CE-MRA findings were compared with subsequent intraprocedural digital subtraction angiography (DSA) or DSA combined with cone-beam computed tomography (CT) to assess the sensitivity and specificity with which contrast enhanced MRA predicted the number and origins of prostatic artery, also to assess the optimal oblique projection of PA. Results: In total, 47 patients (94 pelvic sides) with 97 PAs confirmed by DSA or DSA combined with cone-beam CT at the time of embolization, MR angiography successfully identified 88 PAs and their origins , the sensitivity and specificity was 90.7% (88/97) and 93.6% (88/94), respectively.MR angiography correctly determined the bilateral prostatic artery origins in 36 (76.6%) cases.According to the optimal oblique projection of PAs suggested by MR angiography, the origins and trajectory of PAs of all patients underwent PAE with the same oblique projection (20°-45°ipsilateral anterior oblique direction) were clearly displayed when performed the first arteriography. Conclusion: Pelvic contrast enhanced MR angiography with high sensitivity and specificity in detection the origin, trajectory and number of PAs, and it could provide useful information regarding prostatic arteries before PAE.
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Affiliation(s)
- J L Zhang
- School of Medicine, Nankai University, Tianjin 300071, China
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Abstract
Epoxidized soybean oil methyl esters could be efficiently prepared with the transesterification of epoxidized soybean oil (ESBO) with a lower dosage of methanol using lipase Novozym 435 as catalyst. The optimum parameters were as follows: the molar ratio of 5:1 (methanol to ESBO), 5% Novozym 435 as catalyst, at 45 °C for 14 h, with a stirring speed of 600rpm, under which the epoxidized soybean oil methyl esters (ESBOME) could be obtained at a 95.7% yield. During the enzymatic transesterification process, the oxirane oxygen values were kept unchangeable, which indicated that excellent functional group tolerance could be achieved under such mild reaction conditions. In addition, the recyclability of the immobilized enzyme Novozym 435 in this transesterification process was examined and the results showed that the biocatalyst could be reused ten times without losing any reaction activity or selectivity. And the final products of ESBOME were also identified by IR and NMR analysis. The kinetic data obtained followed the Ping-Pong Bi mechanism model (Vmax = 6.132 mol·L-1min-1, Km,S = 0,0001 mol·L-1, Km, A = 796.148 mol·L-1, Ki, A = 0,0004 mol·L-1) with competitive inhibition by methanol.
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Duan F, Su XL, Wei ZX, Kong DW, Huang TY, Wang S. Efficacy of computed tomography-guided implantation of 125I seeds in the treatment of refractory malignant tumors accompanied with cancer pain and its influence on tumor markers in the serum. Eur Rev Med Pharmacol Sci 2018; 22:1595-1601. [PMID: 29630101 DOI: 10.26355/eurrev_201803_14564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study intended to explore the efficacy of computed tomography (CT)-guided implantation of iodine-125 (125I) seeds in the treatment of refractory malignant tumors with cancer pain and its influence on tumor markers in the serum. PATIENTS AND METHODS 76 patients with refractory malignant tumors accompanied by cancer pain that received treatments in LongHua Hospital Shanghai University of Traditional Chinese Medicine from September 2013 to August 2014 were selected. They were divided into control group and observation group using a random number table (38 patients in each group). Patients in the control group received simple chemotherapy, while those in the observation group undergone CT-guided implantation of 125I seeds in combination with chemotherapy. Recent efficacy and 1-3-year survival rate were compared between the two groups of patients. The degree of pain relief after treatment was also compared between the two groups of patients. Electrochemiluminescence method was used to detect the concentrations of carcinoembryonic antigen (CEA), sugar chain antigen 199 (CA 199), sugar chain antigen 125 (CA 125), neuron-specific enolase (NSE) and cytokeratin-19-fragment (CYFRA21-1) in the two groups of patients before treatment, and 3 days, 7 days and 30 days after treatment. RESULTS Recent disease control rate of the patients in the observation group was higher than that of the patients in the control group (p<0.05). The 1-3-year survival rate after surgery in the observation group was significantly higher than that in the control group (p<0.05). The total efficiency of pain control in the observation group was significantly higher than that in the control group (p<0.05). The levels of tumor markers in the two groups of patients were significantly decreased after treatment, while the reduction in the observation group was more evident than that in the control group (p<0.05). CONCLUSIONS Our results showed that CT-guided implantation of 125I seeds is effective for the treatment of patients with refractory malignant tumors accompanied by cancer pain. It can reduce the levels of tumor markers, improve the survival rate and prolong the survival time of the patients.
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Affiliation(s)
- F Duan
- Department of Radiology, LongHua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China.
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Liu W, Duan F, Bi Y. Fast and simple transesterification of epoxidized soybean oil to prepare epoxy methyl esters at room temperature. RSC Adv 2018; 8:13048-13053. [PMID: 35541221 PMCID: PMC9079759 DOI: 10.1039/c8ra00982a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/30/2018] [Indexed: 11/22/2022] Open
Abstract
Epoxidized soybean oil methyl esters were prepared via transesterification of epoxidized soybean oil (ESBO) with methanol catalyzed by cheap and stable sodium hydroxide (NaOH). The transesterification could be completed in only 5 min at room temperature (25 °C) without loss of the epoxide function and the transesterification rate was promoted significantly while the utilization of 5% acetone as co-solvent. The afforded products epoxidized methyl esters represent a renewable substrate that is readily converted into surfactants, fuel additives and other valuable industrial products.
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Affiliation(s)
- Wei Liu
- College of Food Science and Technology, Henan University of Technology Lianhua Street 100 Zhengzhou 450001 P. R. China +86-371-67758022 +86-371-67758022
| | - Feifei Duan
- College of Food Science and Technology, Henan University of Technology Lianhua Street 100 Zhengzhou 450001 P. R. China +86-371-67758022 +86-371-67758022
| | - Yanlan Bi
- College of Food Science and Technology, Henan University of Technology Lianhua Street 100 Zhengzhou 450001 P. R. China +86-371-67758022 +86-371-67758022
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Jia Y, Yin Y, Tan W, Duan F, Pan Z, Chen X, Jiao XA. [Construction and characterization of an attenuated recombinant Listeria monocytogenes vector vaccine delivering HPV16 E7]. Sheng Wu Gong Cheng Xue Bao 2018; 32:683-692. [PMID: 29019205 DOI: 10.13345/j.cjb.150413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Listeria monocytogenes (L. monocytogenes, LM) is an excellent tumor vaccine vector. In this study, recombinant LM vaccine candidate expressing human papillomavirus type 16 (HPV16) E7 protein was constructed and its charactericts were determined. Through homologous recombination, E7 gene was cloned in frame with the LM4 Phly promoter-signal sequence, and introduced into the chromosome of LM4. The recombinant strain named LM4△hly::E7 with the plasmid-free and antibiotic-resistant gene-free was constructed. LM4△hly::E7 could express and secrete E7-LLO fusion protein; its size is 66 kDa and has immunological activity. Furthermore, LM4△hly::E7 could multiply in RAW264.7 macrophages by confocal laser scanning microscope. Additionally, LM4△hly::E7 could induce specific antibodies against E7 in immunized mice in ELISA. Also, the 50% lethal dose (LD₅₀) of LM4△hly::E7 strain was 3.863×10⁹ CFU (Colony-Forming Units) in C57BL/6 mice with intraperitoneal immunization, which was more attenuated than wild type LM4. Mice immunized with LM4△hly::E7 did not show obvious pathological change. These data show that LM4△hly::E7 expressing E7-LLO fusion protein has good safety, which may provide the materials for research of antitumor effect and would be a promising vaccine candidate for cervical cancer.
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Affiliation(s)
- Yanyan Jia
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Yuelan Yin
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Weijun Tan
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Feifei Duan
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Zhiming Pan
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Xiang Chen
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Xin An Jiao
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou 225009, Jiangsu, China
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25
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Young R, Hopkins R, Duan F, Greco E, Chiles C, Aberle D, Gamble G. OA 15.03 Gene-Based Risk Stratification of NLST-ACRIN Screening Participants Identifies The “Sweet Spot” of Screening (N=10,054). J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.415] [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: 10/18/2022]
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26
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Hopkins R, Young R, Duan F, Greco E, Chiles C, Aberle D, Gamble G. Lung cancer screening and the effects of competing causes of death in the ACRIN-NLST sub-study. Respir Med 2017. [DOI: 10.1016/j.rmed.2017.07.054] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Young R, Hopkins R, Duan F, Greco E, Chiles C, Aberle D, Gamble G. Stratification of NLST-ACRIN screening participants identifies the “sweet spot” of screening by identifying early stage lung cancers most amenable to curative surgery (N=10,054). Respir Med 2017. [DOI: 10.1016/j.rmed.2017.07.055] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Wang Q, Duan F, Liu P, Wang PF, Wang MX. Expression of anti-SRP19 antibody in muscle tissues from patients with autoimmune necrotizing myopathy. Genet Mol Res 2016; 15:gmr8307. [PMID: 27525944 DOI: 10.4238/gmr.15038307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aimed to investigate the role of anti-SRP19 antibody in muscle tissues of patients with autoimmune necrotizing myopathy. Immunohistochemistry staining was used to determine the expression of anti-SRP19 antibodies in muscle tissues of autoimmune necrotizing myopathy patients. Results demonstrated that anti-SRP19 antibody was expressed in 71.4% (20/28) of muscle tissue specimens from patients with autoimmune necrotizing myopathy. Anti-SRP19 antibody expression was mainly localized in cytoplasm of necrotic muscle fibers surrounding the small blood vessels and interstitial cells. There were no significant differences in the age, course of disease, muscle, and creatine kinase levels between patients with positive or negative expression of anti-SRP19 antibodies. The expression levels of anti-SRP19, serum anti-nuclear antibodies, as well as anti-Ro-52, anti- SSA, anti-Sm, and anti-Jo-1 antibodies were not significantly different among groups. This study demonstrates that anti-SRP19 antibody is highly expressed in muscle tissues of patients with autoimmune necrotizing myopathy, and suggests that this protein may be involved in the origin and progression of the disease.
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Affiliation(s)
- Q Wang
- EmergencyDepartment, General Hospital of Chinese People's Armed Police Forces, Beijing, China
| | - F Duan
- Department of Neurology, Navy General Hospital, Beijing, China
| | - P Liu
- Department of VIP Neurology, Navy General Hospital, Beijing, China
| | - P F Wang
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace Clinical College, Beijing, China
| | - M X Wang
- Orthopaedics Department, General Hospital of Chinese People's Armed Police Forces, Beijing, China
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29
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Zhao J, Shu P, Duan F, Wang X, Min L, Shen Z, Ruan Y, Qin J, Sun Y, Qin X. Loss of OLFM4 promotes tumor migration through inducing interleukin-8 expression and predicts lymph node metastasis in early gastric cancer. Oncogenesis 2016; 5:e234. [PMID: 27294866 PMCID: PMC4945743 DOI: 10.1038/oncsis.2016.42] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 01/15/2016] [Accepted: 05/11/2016] [Indexed: 12/26/2022] Open
Abstract
Endoscopic surgery is increasingly used for early gastric cancer (EGC) treatment worldwide, and lymph node metastasis remains the most important risk factor for endoscopic surgery in EGC patients. Olfactomedin 4 (OLFM4) is mainly expressed in the digestive system and upregulated in several types of tumors. However, the role of OLFM4 in EGC has not been explored. We evaluated OLFM4 expression by immunohistochemical staining in 105 patients with EGC who underwent gastrectomy. The clinicopathological factors and OLFM4 expression were co-analyzed to predict lymph node metastasis in EGC. The metastatic mechanism of OLFM4 in gastric cancer was also investigated. We found that OLFM4 was upregulated in EGC tumor sections, and relatively low expression of OLFM4 was observed in patients with lymph node metastasis. OLFM4 expression as well as tumor size and differentiation were identified as independent factors, which could be co-analyzed to generate a better model for predicting lymph node metastasis in EGC patients. In vitro studies revealed that knockdown of OLFM4 promoted the migration of gastric cancer cells through activating the NF-κB/interleukin-8 axis. Negative correlation between OLFM4 and interleukin-8 expression was also observed in EGC tumor samples. Our study implies that OLFM4 expression is a potential predictor of lymph node metastasis in EGC, and combing OLFM4 with tumor size and differentiation could better stratify EGC patients with different risks of lymph node metastasis.
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Affiliation(s)
- J Zhao
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - P Shu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - F Duan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - X Wang
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - L Min
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Z Shen
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Ruan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - J Qin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Sun
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - X Qin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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Abstract
Maternally imprinted genes of makorin ring finger protein 3 (MKRN3) and nucleosome assembly protein 1-like 5 (NAP1L5) have been identified in many species but have not yet been investigated in rabbits. In this study, a polymorphism-based approach and bisulfite-sequencing PCR (BSP) were used to determine the imprinting status of MKRN3 and NAP1L5 in rabbits. The single nucleotide polymorphism (SNP)-based sequencing results demonstrated that MKRN3 and NAP1L5 were expressed preferentially from the paternal allele. Furthermore, the BSP results showed the gamete-specific methylation patterns and hemimethylation in brain and full methylation in liver were observed in MKRN3 and NAP1L5 respectively. Thus, we provide the first evidence that MKRN3 and NAP1L5 are paternally expressed genes and that the CpG islands located in the promoter region may be the putative differentially methylated region of these two genes in rabbits.
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Affiliation(s)
- L Yuan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun, 130062, China
| | - L Lai
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun, 130062, China
| | - F Duan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun, 130062, China
| | - M Chen
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun, 130062, China
| | - J Deng
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun, 130062, China
| | - Z Li
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun, 130062, China
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31
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Zhang J, Chen C, Yan W, Duan F, Zhang B, Gao Z, Qin Y. Ni nanoparticles supported on CNTs with excellent activity produced by atomic layer deposition for hydrogen generation from the hydrolysis of ammonia borane. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01497b] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Highly efficient Ni nanoparticles deposited on CNTs were synthesized by atomic layer deposition used for hydrogen generation from AB hydrolysis.
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Affiliation(s)
- Jiankang Zhang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Science
- Taiyuan 030001
- PR China
| | - Chaoqiu Chen
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Science
- Taiyuan 030001
- PR China
| | - Wenjun Yan
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Science
- Taiyuan 030001
- PR China
| | - Feifei Duan
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Science
- Taiyuan 030001
- PR China
| | - Bin Zhang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Science
- Taiyuan 030001
- PR China
| | - Zhe Gao
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Science
- Taiyuan 030001
- PR China
| | - Yong Qin
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Science
- Taiyuan 030001
- PR China
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32
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Affiliation(s)
- D. Shi
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - T. Mei
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Q. Chen
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - F. Duan
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - M. Chen
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
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33
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Liu J, Qiao W, Qi X, Zhao H, Zheng K, Qian H, Yao S, Yao S, Duan F, Qiu F, Xia D, Y Y, Sun C. Comparison of the features of MRI of tumefactive demyelinating lesions and glioma. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.122] [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: 10/22/2022]
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34
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Duan F, Chen X, Yuan L, Song Y, Wang A, Lv Q, Li Z, Lai L. Conservation of imprinting of Neuronatin (Nnat) in rabbits. Springerplus 2015; 4:257. [PMID: 26090304 PMCID: PMC4467822 DOI: 10.1186/s40064-015-1054-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 05/21/2015] [Indexed: 11/16/2022]
Abstract
Although the expression and epigenetic status of imprinted genes have been extensively studied in a number of species, less is known about the genomic imprinting in rabbits. Neuronatin (Nnat) plays significant roles in the brain development and metabolic regulation and has been identified to be imprinted and paternally expressed in humans, mice and pigs; however, it has not yet been investigated in rabbits. In this study, we confirmed the expression of two isoforms of the rabbit Nnat (Nnat-a and Nnat-β) identified in Genbank and Ensembl by quantitative real-time PCR. In addition, we also determined the methylation profile of the CpG island in the promoter region of the rabbit Nnat using bisulfite sequencing PCR and combined bisulfite restriction analysis. Here, we provide the first evidence that Nnat has two transcripts in rabbit. Additionally, the CpG island located in the promoter region shows oocyte-specific methylation and may be the differentially methylated region of Nnat in rabbits.
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Affiliation(s)
- Feifei Duan
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
| | - Xianju Chen
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
| | - Lin Yuan
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
| | - Yuning Song
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
| | - Anfeng Wang
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
| | - Qingyan Lv
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
| | - Zhanjun Li
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
| | - Liangxue Lai
- College of Animal Science, Jilin University, 5333#, Xi'an Road, Changchun, 130062 China
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35
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Chen C, Chen C, Huang P, Duan F, Zhao S, Li P, Fan J, Song W, Qin Y. NiO/nanoporous graphene composites with excellent supercapacitive performance produced by atomic layer deposition. Nanotechnology 2014; 25:504001. [PMID: 25426539 DOI: 10.1088/0957-4484/25/50/504001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nickel oxide (NiO) is a promising electrode material for supercapacitors because of its low cost and high theoretical specific capacitance of 2573 F g(-1). However, the low electronic conductivity and poor cycling stability of NiO limit its practical applications. To overcome these limitations, an efficient atomic layer deposition (ALD) method is demonstrated here for the fabrication of NiO/nanoporous graphene (NG) composites as electrode materials for supercapacitors. ALD allows uniform deposition of NiO nanoparticles with controlled sizes on the surface of NG, thus offering a novel route to design NiO/NG composites for supercapacitor applications with high surface areas and greatly improved electrical conductivity and cycle stability. Electrochemical measurements reveal that the NiO/NG composites obtained by ALD exhibited excellent specific capacitance of up to ∼ 1005.8 F g(-1) per mass of the composite electrode (the specific capacitance value is up to ∼ 1897.1 F g(-1) based on the active mass of NiO), and stable performance after 1500 cycles. Furthermore, electrochemical performance of the NiO/NG composites is found to strongly depend on the size of NiO nanoparticles.
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Affiliation(s)
- Caiying Chen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, People's Republic of China. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, People's Republic of China
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Yuan L, Wang A, Yao C, Huang Y, Duan F, Lv Q, Wang D, Ouyang H, Li Z, Lai L. Aberrant expression of Xist in aborted porcine fetuses derived from somatic cell nuclear transfer embryos. Int J Mol Sci 2014; 15:21631-43. [PMID: 25429426 PMCID: PMC4284668 DOI: 10.3390/ijms151221631] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/29/2014] [Accepted: 11/10/2014] [Indexed: 11/29/2022] Open
Abstract
Cloned pigs generated by somatic cell nuclear transfer (SCNT) show a greater ratio of early abortion during mid-gestation than normal controls. X-linked genes have been demonstrated to be important for the development of cloned embryos. To determine the relationship between the expression of X-linked genes and abortion of cloned porcine fetuses, the expression of X-linked genes were investigated by quantitative real-time polymerase chain reaction (q-PCR) and the methylation status of Xist DMR was performed by bisulfate-specific PCR (BSP). q-PCR analysis indicated that there was aberrant expression of X-linked genes, especially the upregulated expression of Xist in both female and male aborted fetuses compared to control fetuses. Results of BSP suggested that hypomethylation of Xist occurred in aborted fetuses, whether male or female. These results suggest that the abnormal expression of Xist may be associated with the abortion of fetuses derived from somatic cell nuclear transfer embryos.
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Affiliation(s)
- Lin Yuan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Anfeng Wang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Chaogang Yao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Yongye Huang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Feifei Duan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Qinyan Lv
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Dongxu Wang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Hongsheng Ouyang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Zhanjun Li
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
| | - Liangxue Lai
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China.
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37
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Li Z, Duan F, Lin L, Huang Q, Wu K. A New Approach of Delivering siRNA to the Cornea and its Application for Inhibiting Herpes Simplex Keratitis. Curr Mol Med 2014; 14:1215-25. [DOI: 10.2174/1566524014666141021145909] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 07/18/2014] [Accepted: 07/26/2014] [Indexed: 11/22/2022]
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Bazan J, Duan F, Snyder B, Horng D, Graves E, Siegel B, Machtay M, Loo B. Metabolic Tumor Volume Predicts Overall Survival in Patients With Stage III Non-Small Cell Lung Cancer Treated on ACRIN 6668/RTOG 0235. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.08.027] [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: 10/24/2022]
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39
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Duan F, Chen C, Chen L, Sun Y, Wang Y, Yang Y, Liu X, Qin Y. Preparation and Evaluation of Water-Compatible Surface Molecularly Imprinted Polymers for Selective Adsorption of Bisphenol A from Aqueous Solution. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5028099] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Feifei Duan
- Key
Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education, Taiyuan, Shanxi 030024, China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030024, China
| | - Chaoqiu Chen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030024, China
| | - Lin Chen
- Key
Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education, Taiyuan, Shanxi 030024, China
| | | | - Yunwei Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030024, China
| | - Yongzhen Yang
- Key
Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education, Taiyuan, Shanxi 030024, China
| | - Xuguang Liu
- Key
Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education, Taiyuan, Shanxi 030024, China
| | - Yong Qin
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030024, China
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40
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Ohri N, Duan F, Machtay M, Gorelick J, Snyder B, Alavi A, Siegel B, Johnson D, Bradley J, DeNittis A, Werner-Wasik M. Metabolic Tumor Volume on FDG-PET Predicts Clinical Outcomes Following Chemoradiation Therapy for Locally-Advanced Non-small Cell Lung Cancer: A Secondary Analysis of ECOG-ACRIN 6668 / RTOG 0235. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.612] [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: 10/24/2022]
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41
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Zhang X, Wang D, Han Y, Duan F, Lv Q, Li Z. Altered imprinted gene expression and methylation patterns in mid-gestation aborted cloned porcine fetuses and placentas. J Assist Reprod Genet 2014; 31:1511-7. [PMID: 25172095 DOI: 10.1007/s10815-014-0320-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 08/19/2014] [Indexed: 12/12/2022] Open
Abstract
PURPOSE To determine the expression patterns of imprinted genes and their methylation status in aborted cloned porcine fetuses and placentas. METHODS RNA and DNA were prepared from fetuses and placentas that were produced by SCNT and controls from artificial insemination. The expression of 18 imprinted genes was determined by quantitative real-time PCR (q-PCR). Bisulfite sequencing PCR (BSP) was conducted to determine the methylation status of PRE-1 short interspersed repetitive element (SINE), satellite DNA and H19 differentially methylated region 3 (DMR3). RESULTS The weight, imprinted gene expression and genome-wide DNA methylation patterns were compared between the mid-gestation aborted and normal control samples. The results showed hypermethylation of PRE-1 and satellite sequences, the aberrant expression of imprinted genes, and the hypomethylation of H19 DMR3 occurred in mid-gestation aborted fetuses and placentas. CONCLUSIONS Cloned pigs generated by somatic cell nuclear transfer (SCNT) showed a greater ratio of early abortion during mid-gestation than did normal controls because of the incomplete epigenetic reprogramming of the donor cells. Altered expression of imprinted genes and the hypermethylation profile of the repetitive regions (PRE-1 and satellite DNA) may be associated with defective development and early abortion of cloned pigs, emphasizing the importance of epigenetics during pregnancy and implications thereof for patient-specific embryonic stem cells for human therapeutic cloning and improvement of human assisted reproduction.
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Affiliation(s)
- Xiaoyang Zhang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, 130062, China,
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42
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Huang W, Wang F, Li Y, Duan F, Yu Z. Leukemoid reaction in sarcomatoid renal cell carcinoma: a two-case report. World J Surg Oncol 2014; 12:100. [PMID: 24745762 PMCID: PMC3997186 DOI: 10.1186/1477-7819-12-100] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Accepted: 03/15/2014] [Indexed: 12/18/2022] Open
Abstract
Leukemoid reaction is defined as reactive leukocytosis exceeding 40 × 109/l, with a significant increase in early neutrophil precursors, and can be a paraneoplastic manifestation of various malignant tumors. Leukemoid reaction is a sign for poor prognosis in solid tumors so is sarcomatoid renal cell carcinoma (SRCC) when compared to more differentiated histologies. Here, we are reporting two cases of leukemoid reaction after radical nephrectomy, both of which were diagnosed as SRCC pathologically. The operations were successful: no complications were observed and the patients were discharged in good condition. However, a few weeks later, the white blood cell (WBC) count gradually increased. Even though routine management was done immediately, the count was still elevating. A diagnosis of a leukemoid reaction was established and both of them died shortly thereafter. Due to the poor prognosis of most patients with malignant leukemoid reaction, leukemoid reaction may be a predictor of prognosis in patients with SRCC, but more data are needed.
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Affiliation(s)
| | | | | | | | - Zhixian Yu
- Department of Urology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, ShangCai Village, Wenzhou, Ou Hai District, China. fengyuan-@163.com
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43
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Duan F, Chen C, Wang G, Yang Y, Liu X, Qin Y. Efficient adsorptive removal of dibenzothiophene by graphene oxide-based surface molecularly imprinted polymer. RSC Adv 2014. [DOI: 10.1039/c3ra45354e] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Song P, Wang MQ, Liu FY, Duan F, Wang Y. Iatrogenic renovascular injuries treated by transarterial embolization. Eur Rev Med Pharmacol Sci 2013; 17:3398-3404. [PMID: 24379074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Renal vascular injury may be secondary to blunt or penetrating trauma, iatrogenic injuries or spontaneously with or without underlying pathology. The study aims to evaluate the effectiveness and safety of transarterial embolization (TAE) for the treatment of iatrogenic renovascular injuries (IRVIs). PATIENTS AND METHODS Thirty-six patients (27 males, 9 females, aged 14-79 years) with IRVIs were treated with TAE. Preprocedure computed tomography (CT) and/or ultrasound (US) and/or digital subtraction angiography (DSA) confirmed the presence of IRVIs in all 36 patients. The embolic materials include metallic coils, polyvinyl alcohol particles (PVA), gelfoam and n-butyl cyanoacrylate (NBCA) iodized oil mixture were used. The results of the embolization procedure were recorded. Patients were followed up, and complications of the procedure were noted. RESULTS A total of 40 embolization procedures were performed in 36 patients, and technical success was achieved in all procedures. Medical successes were achieved in 32 (89%) patients. Postembolization syndrome (back pain and fever) were detected in 12 patients (22%). Perirenal abscess was seen in one patient (3%). Puncture-site bleeding, nontarget embolization, decrease in renal function, and arterial hypertension were not detected in any of the patients. CONCLUSIONS TAE is an effective, minimally invasive treatment method for IRVIs. Therefore, TAE should be the first preferred treatment modality.
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Affiliation(s)
- P Song
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing, China.
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Wang F, Chen W, Chen H, Mo L, Jin H, Yu Z, Li C, Liu Q, Duan F, Weng Z. Comparison between zoledronic acid and clodronate in the treatment of prostate cancer patients with bone metastases. Med Oncol 2013; 30:657. [DOI: 10.1007/s12032-013-0657-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 06/28/2013] [Indexed: 10/26/2022]
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Chen C, Li P, Wang G, Yu Y, Duan F, Chen C, Song W, Qin Y, Knez M. Nanoporous Nitrogen-Doped Titanium Dioxide with Excellent Photocatalytic Activity under Visible Light Irradiation Produced by Molecular Layer Deposition. Angew Chem Int Ed Engl 2013; 52:9196-200. [DOI: 10.1002/anie.201302329] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 06/23/2013] [Indexed: 11/11/2022]
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Chen C, Li P, Wang G, Yu Y, Duan F, Chen C, Song W, Qin Y, Knez M. Nanoporous Nitrogen‐Doped Titanium Dioxide with Excellent Photocatalytic Activity under Visible Light Irradiation Produced by Molecular Layer Deposition. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302329] [Citation(s) in RCA: 5] [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] [Indexed: 11/09/2022]
Affiliation(s)
- Chaoqiu Chen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (P.R. China)
| | - Ping Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China)
| | - Guizhen Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (P.R. China)
| | - Yu Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China)
| | - Feifei Duan
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (P.R. China)
| | - Caiying Chen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (P.R. China)
| | - Weiguo Song
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P.R. China)
| | - Yong Qin
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (P.R. China)
| | - Mato Knez
- CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia‐San Sebastian (Spain) and IKERBASQUE, Basque Foundation for Science, Alameda Urquijo 36‐5, 48011 Bilbao (Spain)
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Qi M, Lu D, Li Y, Qin J, Wang H, Zhang Z, Chen X, Duan F, Ma J. Antitumor effect of recombinant human interferon-β adenovirus on esophageal squamous cell cancer in vitro. Dis Esophagus 2013; 27:196-201. [PMID: 23639140 DOI: 10.1111/dote.12081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Interferon (IFN)-β has efficient antitumor effect both in vitro and in vivo, but its clinical implication is limited by short half-life and systemic toxicities. Gene therapy could be the choice to avoid the defects. Adenovirus vector containing human IFN-β gene was transfected into esophageal squamous cell carcinoma KYSE150 cells. Expression of human (h)IFN-β was detected by reverse transcription polymerase chain reaction and immunocytochemistry in KYSE150 cells. Cell growth and clonogenic assays, and flow cytometry were used to observe the antiproliferation effect and apoptosis on tumor cells, respectively. Reverse transcription polymerase chain reaction and immunocytochemistry showed obvious hIFN-β expression in KYSE150 cells after transfection and the tumor cell proliferation was obviously inhibited through cell proliferation and clonogenic assays. Flow cytometry analysis showed 27.3% cell apoptosis in adenovirus vector containing human IFN-β gene transfection group compared with 1.12% in empty vector control group. These findings indicate that hIFN-β gene mediated by recombinant adenovirus may have antitumor activity against human esophageal carcinoma cell by inducing apoptosis in vitro.
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Affiliation(s)
- M Qi
- Affiliated Luoyang Central Hospital, Zhengzhou University, Luoyang
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Wang G, Gao Z, Tang S, Chen C, Duan F, Zhao S, Lin S, Feng Y, Zhou L, Qin Y. Microwave absorption properties of carbon nanocoils coated with highly controlled magnetic materials by atomic layer deposition. ACS Nano 2012; 6:11009-17. [PMID: 23171130 DOI: 10.1021/nn304630h] [Citation(s) in RCA: 234] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In this work, atomic layer deposition is applied to coat carbon nanocoils with magnetic Fe(3)O(4) or Ni. The coatings have a uniform and highly controlled thickness. The coated nanocoils with coaxial multilayer nanostructures exhibit remarkably improved microwave absorption properties compared to the pristine carbon nanocoils. The enhanced absorption ability arises from the efficient complementarity between complex permittivity and permeability, chiral morphology, and multilayer structure of the products. This method can be extended to exploit other composite materials benefiting from its convenient control of the impedance matching and combination of dielectric-magnetic multiple loss mechanisms for microwave absorption applications.
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Affiliation(s)
- Guizhen Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, People's Republic of China
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Ng HK, Luo L, Hu Y, Duan F. Parameter estimation of three-parameter Weibull distribution based on progressively Type-II censored samples. J STAT COMPUT SIM 2012. [DOI: 10.1080/00949655.2011.591797] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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