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Yu Y, Tian K, Meng W, Guo J, Liu Z. Synchronous filtering method for improving the optical signal-to-noise ratio of a tunable laser based on the Fabry-Pérot interferometer. Opt Express 2024; 32:7574-7582. [PMID: 38439435 DOI: 10.1364/oe.514115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/07/2024] [Indexed: 03/06/2024]
Abstract
Optical measurements are closely related to the optical signal-to-noise ratio (OSNR) of the laser, which can be improved using a tunable optical filter (TOF) to suppress frequency noise. For an external-cavity tunable laser with a tuning range larger than the TOF bandwidth, the wavelength at the center of the TOF passband must be varied based on the laser tuning. This study proposes a tunable-laser OSNR-enhancement method based on the Fabry-Pérot (FP) interferometer. The FP signal contains the wavelength information of the swept laser, which can be used to determine the real-time driving voltage of the TOF. Notably, the laser needs to be continuously tunable without mode hopping, and the free spectral range of the FP interferometer must be smaller than the TOF bandwidth.
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Ma X, Jiang M, Ji W, Yu M, Tang C, Tian K, Gao Z, Su L, Tang J, Zhao X. The role and regulation of SIRT1 in pulmonary fibrosis. Mol Biol Rep 2024; 51:338. [PMID: 38393490 DOI: 10.1007/s11033-024-09296-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/29/2024] [Indexed: 02/25/2024]
Abstract
Pulmonary fibrosis (PF) is a progressive and fatal lung disease with high incidence and a lack of effective treatment, which is a severe public health problem. PF has caused a huge socio-economic burden, and its pathogenesis has become a research hotspot. SIRT1 is a nicotinamide adenosine dinucleotide (NAD)-dependent sirtuin essential in tumours, Epithelial mesenchymal transition (EMT), and anti-aging. Numerous studies have demonstrated after extensive research that it is crucial in preventing the progression of pulmonary fibrosis. This article reviews the biological roles and mechanisms of SIRT1 in regulating the progression of pulmonary fibrosis in terms of EMT, oxidative stress, inflammation, aging, autophagy, and discusses the potential of SIRT1 as a therapeutic target for pulmonary fibrosis, and provides a new perspective on therapeutic drugs and prognosis prospects.
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Affiliation(s)
- Xinyi Ma
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China
| | - Mengna Jiang
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China
| | - Wenqian Ji
- College of International Studies, Southwest University, Chongqing, China
| | - Mengjiao Yu
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China
| | - Can Tang
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China
| | - Kai Tian
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China
| | - Zhengnan Gao
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China
| | - Liling Su
- Department of Clinical Medicine, Jiangxi Medical College, Shangrao, 334000, China
| | - Juan Tang
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China.
| | - Xinyuan Zhao
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, 226019, China.
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Ni Y, Jiang M, Wu Y, Xiao P, Wu A, Xia W, Tang C, Yang X, Tian K, Chen H, Huang R. Anoikis-related CTNND1 is associated with immuno-suppressive tumor microenvironment and predicts unfavorable immunotherapeutic outcome in non-small cell lung cancer. J Cancer 2024; 15:317-331. [PMID: 38169514 PMCID: PMC10758022 DOI: 10.7150/jca.89542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 11/08/2023] [Indexed: 01/05/2024] Open
Abstract
Background: Immunotherapy has greatly changed the treatment of advanced non-small cell lung cancer (NSCLC). Anoikis is a programmed cell death process associated with cancer. However, the correlation between anoikis-related genes and the tumor microenvironment (TME) features and immunotherapeutic outcome in NSCLC has not been fully explored. Methods: The bulk and single-cell transcriptome data of NSCLC were downloaded from TCGA and GEO databases. The distribution of anoikis-related genes on different cell types at the single-cell level was analyzed, and these genes specifically expressed by tumor cells and immunotherapy-related were further extracted. Next, the candidate gene CTNND1 was identified and its correlations with the TME features and immunotherapeutic outcome in NSCLC were explored in multiple public cohorts. Finally, an in-house cohort was used to determine the CTNND1 expression and immuno-correlation in NSCLC. Results: At single-cell atlas, we found that anoikis-related genes expressed specifically in tumor cells of NSCLC. By intersecting anoikis-related genes, immunotherapy-associated genes, and the genes expressed in tumor cells, we obtained a special biomarker CTNND1. In addition, cell-cell communication analysis revealed that CTNND1+ tumor cells communicated with immune subpopulations frequently. Moreover, we found that high expression of CTNND1 was related to immuno-suppressive status of NSCLC. The expression of CTNND1 and its immuno-correlation were also validated, and the results showed that CTNND1 was highly expressed in NSCLC tissues and tumors with high CTNND1 expression accompanied with low CD8+ T cells infiltration. Conclusions: Overall, our study reported that CTNND1 can be considered as a novel biomarker for the predication of immunotherapeutic responses and a potential target for NSCLC therapy.
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Affiliation(s)
- Yingchen Ni
- Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, 226001, China
| | - Mengna Jiang
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong 226019, China
| | - Yixuan Wu
- Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, 226001, China
| | - Pei Xiao
- Center for Non-Communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Anqi Wu
- Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, 226001, China
| | - Weiyi Xia
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong 226019, China
| | - Can Tang
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong 226019, China
| | - Xu Yang
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong 226019, China
| | - Kai Tian
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong 226019, China
| | - Hong Chen
- Department of Respiratory Medicine, Nantong Fourth People's Hospital, Nantong, 226000, China
| | - Rongrong Huang
- Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, 226001, China
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Zhu J, Qu R, Wang Y, Ni R, Tian K, Yang C, Li M, Kristensen M, Qiu X. Up-regulation of CYP6G4 mediated by a CncC/maf binding-site-containing insertion confers resistance to multiple classes of insecticides in the house fly Musca domestica. Int J Biol Macromol 2023; 253:127024. [PMID: 37769776 DOI: 10.1016/j.ijbiomac.2023.127024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/17/2023] [Accepted: 09/20/2023] [Indexed: 10/03/2023]
Abstract
Populations of many insect species have evolved a variety of resistance mechanisms in response to insecticide selection. Current knowledge about mutations responsible for insecticide resistance is largely achieved from studies on target-site resistance, while much less is known about metabolic resistance. Although it is well known that P450 monooxygenases are one of the major players involved in insecticide metabolism and resistance, understanding mutation(s) responsible for CYP-mediated resistance has been a big challenge. In this study, we used the house fly to pursue a better understanding of P450 mediated insecticide resistance at the molecular level. Metabolism studies illustrated that CYP6G4 had a broad-spectrum metabolic activity in metabolizing insecticides. Population genotyping revealed that the CYP6G4v1 allele harboring a DNA insertion (MdIS1) had been selected in many house fly populations on different continents. Dual luciferase reporter assays identified that the MdIS1 contained a CncC/Maf binding site, and electrophoretic mobility shift assay confirmed that transcription factor CncC was involved in the MdIS1-mediated regulation. This study highlights the common involvement of the CncC pathway in adaptive evolution, and provides an interesting case supportive of parallel evolution in P450-mediated insecticide resistance in insects.
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Affiliation(s)
- Jiang Zhu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruinan Qu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yawei Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruoyao Ni
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kai Tian
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chan Yang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mei Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | | | - Xinghui Qiu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
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Xu D, Liang J, Zhou T, Liu Y, Wang Q, Mu X, Tian K, Yao L. First report of powdery mildew caused by Podosphaera fusca on Coreopsis tinctoria in China. Plant Dis 2023. [PMID: 38050401 DOI: 10.1094/pdis-10-23-2089-pdn] [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] [Indexed: 12/06/2023]
Abstract
Coreopsis tinctoria is an annual herb and commonly cultivated in gardens due to its attractive flowers, its capitula also have been used as a traditional medicine in China, Asia, North America and Europe (Shen et al. 2021). In June 2023, severe powdery mildew infection was observed on C. tinctoria in a hillside near headwork of the middle route of the South to North Water Diversion Project (32°40'55''N, 111°41'59''E). Abundant irregular white spots were found on adaxial surface of the leaves and tender stems. Approximately 75% of the observed C. tinctoria plants showed these signs and symptoms. Generative hyphae were thin-walled, smooth or almost so, and 5 to 9 μm wide. Conidiophores were unbranched, straight, 80.5 to 162.5 × 9.3 to 12.9 μm (n=25), and produced one to three immature conidia. Foot-cells of conidiophores were cylindrical, 38.5 to 62.3 μm (n=20) long. Conidia were ellipsoid to ovoid, 25.1 to 31.9 × 15.2 to 19.5 μm (n=30). The morphological characteristics of asexual structures corresponded to Podosphaera sp. (Braun and Cook 2012). For further identification, genomic DNA was extracted directly from the mycelia and conidia using Chelex 100 (Sigma Aldrich, Shanghai, China). The internal transcribed spacer (ITS) regions and 28S large subunit (LSU) of ribosomal DNA from the specimen (CT2302) were amplified using the primers ITS1/ITS4 (expected amplicon size 566 bp) (White et al. 1990) and NL1/NL4 (expected amplicon size 618 bp) (Baten et al. 2014), respectively. The sequences of ITS (GenBank accession no. OR649304) and LSU (GenBank accession no. OR649305) showed 99.63% and 100% identity values to the Podosphaera fusca isolate HMNWAFU-CF2012074 in the NCBI database (KR048109 for ITS and KR048178 for LSU), respectively. Phylogenetic analyses based on the combined ITS and LSU sequences using MEGA 7.0 software indicated that CT2302 formed a monophyletic clade together with isolates of P. fusca. Therefore, this fungus was identified as P. fusca based on the morphological and molecular characteristics. Pathogenicity tests were performed by gently pressing the infected leaves onto 15 young leaves of five healthy plants and three noninoculated plants were used as controls. All plants were maintained in a greenhouse (25℃ and 70% relative humidity). Powdery mildew symptoms similar to those of originally diseased plants were observed on all inoculated leaves after 12 days, whereas no symptoms were observed on the control leaves. Powdery mildew caused by P. fusca (previously Sphaerotheca fusca) on C. tinctoria has been reported in Russia, Poland, Korea, Romania and Ukraine (Cho and Shin 2004; Rusanov and Bulgakow 2008). To our knowledge, this is the first report of P. fusca on C. tinctoria in China. The identification of P. fusca as the causal agent on C. tinctoria is critical to the prevention and control of this disease in the future.
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Affiliation(s)
- Dandan Xu
- No.1638, Wolong Road, Wolong DistrictNanyang, Henan, China, 473061;
| | | | | | - Yi Liu
- Nanyang Normal University, Nanyang, China;
| | - Qi Wang
- Nanyang Normal University, 71072, Nanyang, China;
| | - Xiaoyan Mu
- Nanyang Normal University, 71072, Nanyang, China;
| | - Kai Tian
- Nanyang Normal University, 71072, 1638 Wolong R., Wolong District, Nanyang, Henan, P.R. China, Nanyang, China, 473061;
| | - Lunguang Yao
- Key Laboratory of Ecological Security for Water Source Region of Mid-line Project of South-to-North Diversion Project of Henan Province, Nanyang Normal University, Nanyang, China;
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Bai X, Li Y, Li Y, Li M, Luo M, Tian K, Jiang M, Xiong Y, Lu Y, Li Y, Yu H, Huang X. Antinociceptive activity of doliroside B. Pharm Biol 2023; 61:201-212. [PMID: 36628487 PMCID: PMC9848282 DOI: 10.1080/13880209.2022.2163407] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 11/16/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
CONTEXT Dolichos trilobus Linn (Leguminosae) is often used in Yi ethnic medicine to treat pain, fracture, and rheumatism. OBJECTIVE To explore the therapeutic potential of doliroside B (DB) from D. trilobus and its disodium salt (DBDS) and the underlying mechanism in pain. MATERIALS AND METHODS In the writhing test, Kunming mice were orally treated with DB and DBDS at doses of 0.31, 0.62, 1.25, 2.5, and 5 mg/kg. Vehicle, morphine, indomethacin, and acetylsalicylic acid were used as negative and positive control on the nociception-induced models, respectively. In the hot plate test, mice were orally treated with DB and DBDS at doses of 2.5, 5, 10, and 20 mg/kg. In the formalin test, mice were orally treated with DB and DBDS at doses of 2.5, 5, 10, and 20 mg/kg. In the meanwhile, lipopolysaccharide-induced inflammatory model in RAW264.7 macrophages was adopted to study the mechanism of pain alleviation for DBDS. RESULTS DBDS (5 mg/kg) inhibited the writhing number by 80.2%, which exhibited the highest antinociceptive activity in pain models. DBDS could selectively inhibite the activity of COX-1. Meanwhile, it also reduced the production of NO, iNOS, and IL-6 by 55.8%, 69.0%, and 49.9% inhibition, respectively. It was found that DBDS also positively modulated the function of GABAA1 receptor. DISCUSSION AND CONCLUSIONS DBDS displayed antinociceptive activity by acting on both the peripheral and central nervous systems, which may act on multitargets. Further work is warranted for developing DBDS into a potential drug for the treatment of pain.
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Affiliation(s)
- Xishan Bai
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Yanhong Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Yuxiao Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Min Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ming Luo
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Kai Tian
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Mengyuan Jiang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Yong Xiong
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Ya Lu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Yukui Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Haibo Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiangzhong Huang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
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Yu M, Ji W, Yang X, Tian K, Ma X, Yu S, Chen L, Zhao X. The role of m6A demethylases in lung cancer: diagnostic and therapeutic implications. Front Immunol 2023; 14:1279735. [PMID: 38094306 PMCID: PMC10716209 DOI: 10.3389/fimmu.2023.1279735] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/13/2023] [Indexed: 12/18/2023] Open
Abstract
m6A is the most prevalent internal modification of eukaryotic mRNA, and plays a crucial role in tumorigenesis and various other biological processes. Lung cancer is a common primary malignant tumor of the lungs, which involves multiple factors in its occurrence and progression. Currently, only the demethylases FTO and ALKBH5 have been identified as associated with m6A modification. These demethylases play a crucial role in regulating the growth and invasion of lung cancer cells by removing methyl groups, thereby influencing stability and translation efficiency of mRNA. Furthermore, they participate in essential biological signaling pathways, making them potential targets for intervention in lung cancer treatment. Here we provides an overview of the involvement of m6A demethylase in lung cancer, as well as their potential application in the diagnosis, prognosis and treatment of the disease.
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Affiliation(s)
- Mengjiao Yu
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, China
| | - Wenqian Ji
- College of International Studies, Southwest University, Chongqing, China
| | - Xu Yang
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, China
| | - Kai Tian
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, China
| | - Xinyi Ma
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, China
| | - Shali Yu
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, China
| | - Lin Chen
- Nantong Institute of Liver Diseases, Nantong Third People’s Hospital Affiliated Nantong Hospital of Nantong University, Nantong, China
| | - Xinyuan Zhao
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, School of Public Health, Nantong University, Nantong, China
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Li YH, Bai XS, Yang XX, Li YX, Li HR, Wang ZL, Wang W, Tian K, Huang XZ. Triterpenoid saponins from Psammosilene tunicoides and their antinociceptive activities. Phytochemistry 2023; 214:113795. [PMID: 37487918 DOI: 10.1016/j.phytochem.2023.113795] [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: 01/16/2023] [Revised: 06/28/2023] [Accepted: 07/19/2023] [Indexed: 07/26/2023]
Abstract
Herein, five undescribed oleanane-type triterpenoid saponins, namely, psammosaponins A-E, along with nine known compounds, were isolated from the roots of Psammosilene tunicoides. Moreover, part of the ethanolic extract of P. tunicoides was acid-hydrolyzed and three aglycones were isolated from the resulting hydrolysate. The structures of all compounds were established through extensive analysis involving 1D and 2D NMR experiments, HRESIMS measurements, chemical derivatization, and comparison of spectroscopic data with the values reported in the literature. In all, 10 of the isolated saponins and the three aglycones were evaluated in the acetic acid-induced writhing model for their antinociceptive activity. At a dose of 40 mg/kg, these compounds exhibited significant inhibitory effects on the mouse writhing response, with inhibitions ranging from 31.9% to 79.3%. In addition, the structure-activity relationships of the isolates were discussed. Among the isolates, quillaic acid 3-O-glucuronide and 16α-hydroxygypsogenic acid showed better antinociceptive activity with inhibitions of 79.3% and 73.7%, respectively. Both isolates also exhibited antinociceptive activities in hot plate and formalin tests on mice. Their antinociceptive mechanism was explored in lipopolysaccharide-stimulated RAW 264.7 cells. These isolates could significantly inhibit the production of nitric oxide and interleukin-6 and downregulate the expression levels of inducible NO synthase, COX-1, and COX-2.
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Affiliation(s)
- Yan-Hong Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Xi-Shan Bai
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Xiu-Xia Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Yu-Xiao Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Hong-Rui Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Zi-Liang Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Wei Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Kai Tian
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China
| | - Xiang-Zhong Huang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, 650504, Yunnan, China.
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9
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Reinhard M, Skoien D, Spies JA, Garcia-Esparza AT, Matson BD, Corbett J, Tian K, Safranek J, Granados E, Strader M, Gaffney KJ, Alonso-Mori R, Kroll T, Sokaras D. Solution phase high repetition rate laser pump x-ray probe picosecond hard x-ray spectroscopy at the Stanford Synchrotron Radiation Lightsource. Struct Dyn 2023; 10:054304. [PMID: 37901682 PMCID: PMC10613086 DOI: 10.1063/4.0000207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/11/2023] [Indexed: 10/31/2023]
Abstract
We present a dedicated end-station for solution phase high repetition rate (MHz) picosecond hard x-ray spectroscopy at beamline 15-2 of the Stanford Synchrotron Radiation Lightsource. A high-power ultrafast ytterbium-doped fiber laser is used to photoexcite the samples at a repetition rate of 640 kHz, while the data acquisition operates at the 1.28 MHz repetition rate of the storage ring recording data in an alternating on-off mode. The time-resolved x-ray measurements are enabled via gating the x-ray detectors with the 20 mA/70 ps camshaft bunch of SPEAR3, a mode available during the routine operations of the Stanford Synchrotron Radiation Lightsource. As a benchmark study, aiming to demonstrate the advantageous capabilities of this end-station, we have conducted picosecond Fe K-edge x-ray absorption spectroscopy on aqueous [FeII(phen)3]2+, a prototypical spin crossover complex that undergoes light-induced excited spin state trapping forming an electronic excited state with a 0.6-0.7 ns lifetime. In addition, we report transient Fe Kβ main line and valence-to-core x-ray emission spectra, showing a unique detection sensitivity and an excellent agreement with model spectra and density functional theory calculations, respectively. Notably, the achieved signal-to-noise ratio, the overall performance, and the routine availability of the developed end-station have enabled a systematic time-resolved science program using the monochromatic beam at the Stanford Synchrotron Radiation Lightsource.
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Affiliation(s)
- Marco Reinhard
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Dean Skoien
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | | | | | - Jeff Corbett
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Kai Tian
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - James Safranek
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Eduardo Granados
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Matthew Strader
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Kelly J. Gaffney
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | - Thomas Kroll
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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10
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Tian K, Wang R, Huang J, Wang H, Ji X. Subcellular localization shapes the fate of RNA polymerase III. Cell Rep 2023; 42:112941. [PMID: 37556328 DOI: 10.1016/j.celrep.2023.112941] [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: 02/08/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 08/11/2023] Open
Abstract
RNA polymerase III (Pol III) plays a vital role in transcription and as a viral-DNA sensor, but how it is assembled and distributed within cells remains poorly understood. Here, we show that Pol III is assembled with chaperones in the cytoplasm and forms transcription-dependent protein clusters upon transport into the nucleus. The largest subunit (RPC1) depletion through an auxin-inducible degron leads to rapid degradation and disassembly of Pol III complex in the nucleus and cytoplasm, respectively. This generates a pool of partially assembled Pol III intermediates, which can be rapidly mobilized into the nucleus upon the restoration of RPC1. Our study highlights the critical role of subcellular localization in determining Pol III's fate and provides insight into the dynamic regulation of nuclear Pol III levels and the origin of cytoplasmic Pol III complexes involved in mediating viral immunity.
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Affiliation(s)
- Kai Tian
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Rui Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Jie Huang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Hui Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Xiong Ji
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.
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11
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Yang J, Lu J, Yang Y, Tian K, Kong X, Tian X, Scheu S. Earthworms neutralize the influence of components of particulate pollutants on soil extracellular enzymatic functions in subtropical forests. PeerJ 2023; 11:e15720. [PMID: 37551350 PMCID: PMC10404396 DOI: 10.7717/peerj.15720] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 06/16/2023] [Indexed: 08/09/2023] Open
Abstract
Human activities are increasing the input of atmospheric particulate pollutants to forests. The components of particulate pollutants include inorganic anions, base cations and hydrocarbons. Continuous input of particulate pollutants may affect soil functioning in forests, but their effects may be modified by soil fauna. However, studies investigating how soil fauna affects the effects of particulate pollutants on soil functioning are lacking. Here, we investigated how earthworms and the particulate components interact in affecting soil enzymatic functions in a deciduous (Quercus variabilis) and a coniferous (Pinus massoniana) forest in southeast China. We manipulated the addition of nitrogen (N, ammonium nitrate), sodium (Na, sodium chloride) and polycyclic aromatic hydrocarbons (PAHs, five mixed PAHs) in field mesocosms with and without Eisenia fetida, an earthworm species colonizing forests in eastern China. After one year, N and Na addition increased, whereas PAHs decreased soil enzymatic functions, based on average Z scores of extracellular enzyme activities. Earthworms generally stabilized soil enzymatic functions via neutralizing the effects of N, Na and PAHs addition in the deciduous but not in the coniferous forest. Specifically, earthworms neutralized the effects of N and Na addition on soil pH and the effects of the addition of PAHs on soil microbial biomass. Further, both particulate components and earthworms changed the correlations among soil enzymatic and other ecosystem functions in the deciduous forest, but the effects depended on the type of particulate components. Generally, the effects of particulate components and earthworms on soil enzymatic functions were weaker in the coniferous than the deciduous forest. Overall, the results indicate that earthworms stabilize soil enzymatic functions in the deciduous but not the coniferous forest irrespective of the type of particulate components. This suggests that earthworms may neutralize the influence of atmospheric particulate pollutants on ecosystem functions, but the neutralization may be restricted to deciduous forests.
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Affiliation(s)
- Junbo Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu Province, China
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Göttingen, Göttingen, Lower Saxony, Germany
| | - Jingzhong Lu
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Göttingen, Göttingen, Lower Saxony, Germany
| | - Yinghui Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu Province, China
| | - Kai Tian
- College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang, Henan Province, China
| | - Xiangshi Kong
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Jishou, Hunan Province, China
| | - Xingjun Tian
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu Province, China
- College of Eco-Environmental Engineering, Qinghai University, Xining, Qinghai Province, China
| | - Stefan Scheu
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Göttingen, Göttingen, Lower Saxony, Germany
- Centre of Biodiversity and Sustainable Land Use, University of Göttingen, Göttingen, Lower Saxony, Germany
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12
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Wang R, Xu Q, Wang C, Tian K, Wang H, Ji X. Multiomic analysis of cohesin reveals that ZBTB transcription factors contribute to chromatin interactions. Nucleic Acids Res 2023; 51:6784-6805. [PMID: 37264934 PMCID: PMC10359638 DOI: 10.1093/nar/gkad401] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 05/23/2023] [Indexed: 06/03/2023] Open
Abstract
One bottleneck in understanding the principles of 3D chromatin structures is caused by the paucity of known regulators. Cohesin is essential for 3D chromatin organization, and its interacting partners are candidate regulators. Here, we performed proteomic profiling of the cohesin in chromatin and identified transcription factors, RNA-binding proteins and chromatin regulators associated with cohesin. Acute protein degradation followed by time-series genomic binding quantitation and BAT Hi-C analysis were conducted, and the results showed that the transcription factor ZBTB21 contributes to cohesin chromatin binding, 3D chromatin interactions and transcriptional repression. Strikingly, multiomic analyses revealed that the other four ZBTB factors interacted with cohesin, and double degradation of ZBTB21 and ZBTB7B led to a further decrease in cohesin chromatin occupancy. We propose that multiple ZBTB transcription factors orchestrate the chromatin binding of cohesin to regulate chromatin interactions, and we provide a catalog of many additional proteins associated with cohesin that warrant further investigation.
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Affiliation(s)
- Rui Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Qiqin Xu
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Chenlu Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Kai Tian
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Hui Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Xiong Ji
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
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13
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Tian K, Ye J, Zhong Y, Jia Z, Xu W, Gao S, Cao S, Li K, Wu L. Autologous i-PRF promotes healing of radiation-induced skin injury. Wound Repair Regen 2023; 31:454-463. [PMID: 37073922 DOI: 10.1111/wrr.13083] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/27/2023] [Accepted: 04/03/2023] [Indexed: 04/20/2023]
Abstract
Skin, as an exposed tissue, often suffers damage after exposure to radiotherapy and accidental events, which may lead to the formation of chronic refractory wounds. However, effective treatment options are usually limited for severe radiation-induced skin injury (RSI). Platelet-rich plasma (PRP) has been identified to promote wound healing, but whether a new generation of blood-derived biomaterial, injectable platelet-rich fibrin (i-PRF), is effective in repairing RSI remains unclear. In this study, blood was drawn from humans and Sprague-Dawley rats to prepare PRP and i-PRF, and the regenerative functions of PRP and i-PRF were investigated by exposing the dorsal skin of SD rats to local radiation (45 Gy) and exposing HDF-α cells and human umbilical vein endothelial cells (HUVECs) cells to X-rays (10 Gy). The healing effect of i-PRF on RSI was analysed by tube formation assay, cell migration and apoptosis assays, ROS assay, wound healing assay, histological characterisation and immunostaining. The results showed that exposure to high doses of radiation reduced cell viability, increased ROS levels and induced cell apoptosis, thereby causing dorsal trauma of rats. However, both PRP and i-PRF could resisted RSI, and they were capable of reducing inflammation and promoting angiogenesis and vascular regeneration. i-PRF has a higher concentration of platelets and platelet-derived growth factors, which has a more convenient preparation method and better repair effect and possesses a good application prospect for the repair of RSI.
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Affiliation(s)
- Kai Tian
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jingcheng Ye
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuanyuan Zhong
- Party and Administration Office, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Zou Jia
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Wushuang Xu
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Suyue Gao
- Department of Dermatology and Cosmetic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Shikun Cao
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ke Li
- Department of Plastic and Aesthetic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lijun Wu
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
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14
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Tian K, Tzigieras A, Wei C, Lee YM, Holmes C, Leonetti M, Merat N, Romano R, Markkula G. Deceleration parameters as implicit communication signals for pedestrians' crossing decisions and estimations of automated vehicle behaviour. Accid Anal Prev 2023; 190:107173. [PMID: 37336051 DOI: 10.1016/j.aap.2023.107173] [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: 01/14/2023] [Revised: 05/18/2023] [Accepted: 06/11/2023] [Indexed: 06/21/2023]
Abstract
Society greatly expects the widespread deployment of automated vehicles (AVs). However, the absence of a driver role results in unresolved communication issues between pedestrians and AVs. Research has shown the crucial role of implicit communication signals in this context. Nonetheless, it remains unclear how pedestrians subjectively estimate vehicle behaviour and whether they incorporate these estimations as part of their crossing decisions. For the first time, this study explores the impact of implicit communication signals on pedestrians' subjective estimations of approaching vehicle behaviour across a wide range of experimental traffic scenarios and on their crossing decisions in the same scenarios through a comprehensive analysis. Two simulator tasks, namely a natural road crossing task and a vehicle behaviour estimation task, were designed with controlled time to collision, vehicle speed, and deceleration behaviour. A novel finding is that the correlation between crossing decisions and vehicle behaviour estimations depends on the traffic scenario. Pedestrians' recognition of different deceleration behaviour aligned with their crossing decisions, supporting the notion that they actively estimate vehicle behaviour as part of their decision-making process. However, if the traffic gap was long enough, the effects of vehicle speed were the opposite between crossing decisions and estimations, suggesting that vehicle behaviour estimation may not directly impact crossing decisions when the time gap to the vehicle is large. We also found that pedestrians crossed the street earlier and estimated yielding behaviour more accurately in early-onset braking scenarios than in late-onset braking scenarios. Interestingly, vehicle speed significantly affected pedestrians' estimations, with pedestrians tending to perceive low vehicle speed as yielding behaviour regardless of whether the vehicle yielded. Finally, we demonstrated that visual cue τ̇ is a practical indicator for controlling the vehicle deceleration evidence in the experiment. In conclusion, these findings reveal in detail the role of deceleration parameters as implicit communication signals between pedestrians and AVs, with implications for road crossing safety and the development of AVs.
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Affiliation(s)
- Kai Tian
- Institute for Transport Studies, University of Leeds, Leeds, LS1 9JT, UK.
| | | | - Chongfeng Wei
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Belfast, BT7 1NN, UK
| | - Yee Mun Lee
- Institute for Transport Studies, University of Leeds, Leeds, LS1 9JT, UK
| | - Christopher Holmes
- Nissan Technical Centre Europe, Nissan Motor Corporation, Cranfield, MK43 0DB, UK
| | - Matteo Leonetti
- Department of Informatics, King's College London, London, WC2R 2LS, UK
| | - Natasha Merat
- Institute for Transport Studies, University of Leeds, Leeds, LS1 9JT, UK
| | - Richard Romano
- Institute for Transport Studies, University of Leeds, Leeds, LS1 9JT, UK
| | - Gustav Markkula
- Institute for Transport Studies, University of Leeds, Leeds, LS1 9JT, UK
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15
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Chingarande RG, Tian K, Kuang Y, Sarangee A, Hou C, Ma E, Ren J, Hawkins S, Kim J, Adelstein R, Chen S, Gillis KD, Gu LQ. Real-time label-free detection of dynamic aptamer-small molecule interactions using a nanopore nucleic acid conformational sensor. Proc Natl Acad Sci U S A 2023; 120:e2108118120. [PMID: 37276386 PMCID: PMC10268594 DOI: 10.1073/pnas.2108118120] [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: 05/18/2021] [Accepted: 04/14/2023] [Indexed: 06/07/2023] Open
Abstract
Nucleic acids can undergo conformational changes upon binding small molecules. These conformational changes can be exploited to develop new therapeutic strategies through control of gene expression or triggering of cellular responses and can also be used to develop sensors for small molecules such as neurotransmitters. Many analytical approaches can detect dynamic conformational change of nucleic acids, but they need labeling, are expensive, and have limited time resolution. The nanopore approach can provide a conformational snapshot for each nucleic acid molecule detected, but has not been reported to detect dynamic nucleic acid conformational change in response to small -molecule binding. Here we demonstrate a modular, label-free, nucleic acid-docked nanopore capable of revealing time-resolved, small molecule-induced, single nucleic acid molecule conformational transitions with millisecond resolution. By using the dopamine-, serotonin-, and theophylline-binding aptamers as testbeds, we found that these nucleic acids scaffolds can be noncovalently docked inside the MspA protein pore by a cluster of site-specific charged residues. This docking mechanism enables the ion current through the pore to characteristically vary as the aptamer undergoes conformational changes, resulting in a sequence of current fluctuations that report binding and release of single ligand molecules from the aptamer. This nanopore tool can quantify specific ligands such as neurotransmitters, elucidate nucleic acid-ligand interactions, and pinpoint the nucleic acid motifs for ligand binding, showing the potential for small molecule biosensing, drug discovery assayed via RNA and DNA conformational changes, and the design of artificial riboswitch effectors in synthetic biology.
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Affiliation(s)
- Rugare G. Chingarande
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO65211
| | - Kai Tian
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO65211
| | - Yu Kuang
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO65211
| | - Aby Sarangee
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Chengrui Hou
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Emily Ma
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Jarett Ren
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Sam Hawkins
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Joshua Kim
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Ray Adelstein
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Sally Chen
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
| | - Kevin D. Gillis
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO65211
| | - Li-Qun Gu
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO65211
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16
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Yang J, Tian K, Lu J, Kong X, Li Q, Ye R, Zeng X, Cao T, Hu H, Ji Y, Tian X, Scheu S. Earthworms increase forest litter mass loss irrespective of deposited compounds - A field manipulation experiment in subtropical forests. Ecol Evol 2023; 13:e10047. [PMID: 37139404 PMCID: PMC10150166 DOI: 10.1002/ece3.10047] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 04/05/2023] [Accepted: 04/17/2023] [Indexed: 05/05/2023] Open
Abstract
Earthworms modulate carbon and nitrogen cycling in terrestrial ecosystems, but their effect may be compromised by the deposition of pollutants from industrial emissions. However, studies investigating how deposited compounds affect the role of earthworms in carbon cycling such as litter decomposition are lacking, although the interactions of earthworms and deposited compounds are important for understanding the impact of pollutants on ecosystems and the potential of earthworms in bioremediation. We performed a 365-day in situ litterbag decomposition experiment in a deciduous (Quercus variabilis) and coniferous (Pinus massoniana) forest in southeast China. We manipulated nitrogen (N), sodium (Na), and polycyclic aromatic hydrocarbons (PAHs) as model compounds during litter decomposition with and without earthworms (Eisenia fetida). After one year, N, Na, and PAH all slowed down litter mass loss, with the effects of Na being the strongest. By contrast, E. fetida generally increased litter mass loss, and the positive effects were uniformly maintained irrespective of the type of compounds added. However, the pathways to how earthworms increased litter mass loss varied among the compounds added and the two forests studied. As indicated by structural equation modeling, earthworms mitigated the negative effects of deposited compounds by directly increasing litter mass loss and indirectly increasing soil pH and microbial biomass. Overall, the results indicate that the acceleration of litter mass loss by earthworms is little affected by deposited compounds, and that earthworms have the potential to mitigate negative impacts of pollutants on litter decomposition and ecosystem processes.
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Affiliation(s)
- Junbo Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
- Johann‐Friedrich‐Blumenbach Institute of Zoology and AnthropologyUniversity of GöttingenGöttingenGermany
| | - Kai Tian
- College of Life Science and Agricultural EngineeringNanyang Normal UniversityNanyangChina
| | - Jingzhong Lu
- Johann‐Friedrich‐Blumenbach Institute of Zoology and AnthropologyUniversity of GöttingenGöttingenGermany
| | - Xiangshi Kong
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management EngineeringJishou UniversityJishouChina
| | - Qiang Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Rumeng Ye
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Xiaoyi Zeng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Tingting Cao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Haijing Hu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Yanli Ji
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
| | - Xingjun Tian
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life SciencesNanjing UniversityNanjingChina
- College of Eco‐Environmental EngineeringQinghai UniversityXiningChina
| | - Stefan Scheu
- Johann‐Friedrich‐Blumenbach Institute of Zoology and AnthropologyUniversity of GöttingenGöttingenGermany
- Center of Biodiversity and Sustainable Land UseUniversity of GöttingenGöttingenGermany
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17
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Xu Y, Ren H, Tian K, Yu Z, Meng Q. [Advances in bacterial adsorption and transport of aromatic compounds]. Sheng Wu Gong Cheng Xue Bao 2023; 39:961-977. [PMID: 36994565 DOI: 10.13345/j.cjb.220486] [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: 03/31/2023]
Abstract
Aromatic compounds are a class of organic compounds with benzene ring(s). Aromatic compounds are hardly decomposed due to its stable structure and can be accumulated in the food cycle, posing a great threat to the ecological environment and human health. Bacteria have a strong catabolic ability to degrade various refractory organic contaminants (e.g., polycyclic aromatic hydrocarbons, PAHs). The adsorption and transportation are prerequisites for the catabolism of aromatic compounds by bacteria. While remarkable progress has been made in understanding the metabolism of aromatic compounds in bacterial degraders, the systems responsible for the uptake and transport of aromatic compounds are poorly understood. Here we summarize the effect of cell-surface hydrophobicity, biofilm formation, and bacterial chemotaxis on the bacterial adsorption of aromatic compounds. Besides, the effects of outer membrane transport systems (such as FadL family, TonB-dependent receptors, and OmpW family), and inner membrane transport systems (such as major facilitator superfamily (MFS) transporter and ATP-binding cassette (ABC) transporter) involved in the membrane transport of these compounds are summarized. Moreover, the mechanism of transmembrane transport is also discussed. This review may serve as a reference for the prevention and remediation of aromatic pollutants.
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Affiliation(s)
- Yinming Xu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
| | - Huiping Ren
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
| | - Kai Tian
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
| | - Zhiliang Yu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
| | - Qiu Meng
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
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18
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Li T, Chen J, Tian K, Zhou Q, Li M, Ju W. Exploring the sensitivity of Hf 2CO 2 towards H 2S: a DFT study. Mol Phys 2023. [DOI: 10.1080/00268976.2023.2188975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Tongwei Li
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
| | - Jing Chen
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
| | - Kai Tian
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
| | - Qingxiao Zhou
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
- College of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
| | - Mengjie Li
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
| | - Weiwei Ju
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, People’s Republic of China
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19
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Wang J, Tian K, Li D, Chen M, Feng X, Zhang Y, Wang Y, Van der Bruggen B. Machine learning in gas separation membrane developing: ready for prime time. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123493] [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: 03/03/2023]
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Jia Z, Tian K, Zhong Y, Wang X, Gao S, Xu W, Li K, Wu L. Effectiveness of combination therapy of broadband light and intradermal injection of tranexamic acid in the treatment of chloasma. J Cosmet Dermatol 2023; 22:1536-1544. [PMID: 36718828 DOI: 10.1111/jocd.15632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 02/01/2023]
Abstract
OBJECTIVE To investigate the efficacy and safety of broadband light (BBL) combined with intradermal injection of tranexamic acid for treating melasma. METHODS 120 women with melasma admitted to our hospital from January 2021 to April 2022 were randomly categorized into the following groups: control group, treated with 250 mg tranexamic acid given orally twice daily, except during menstruation; group I, treated with BBL (Sciton, Inc., USA) monthly; group II, received intradermal injections of tranexamic acid monthly; and group III, treated with BBL with intradermal injection of tranexamic acid monthly. Treatment in each group lasted three months. The MASI (Melasma Area Severity Index) and VISIA (Canfield VISIA Complexion Analysis) were used for evaluation. RESULTS After treatment course, MASI scores and VISIA brown spot and red zone ranking improved in all four groups (p < 0.05). The decrease in MASI scores and improvement rates of VISIA brown spot and red zone rankings were not significantly different among the control group, group I, and group II; however, the decreased MASI scores and improvement rates of VISIA brown spot and red zone rankings were significantly higher in group III than in the other three groups (p < 0.05). CONCLUSION The effect of BBL combined with the intradermal injection of TA in the treatment of melasma is remarkable. This combination therapy can be an alternative and effective treatment for managing melasma.
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Affiliation(s)
- Zou Jia
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Kai Tian
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuanyuan Zhong
- Department of Party and Administration Office, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaoyun Wang
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Suyue Gao
- Department of Dermatology and Cosmetic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Wushuang Xu
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ke Li
- Department of Plastic and Aesthetic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lijun Wu
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
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21
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Tian K, Chai P, Wang Y, Chen L, Qian H, Chen S, Mi X, Ren H, Ma K, Chen J. Species diversity pattern and its drivers of the understory herbaceous plants in a Chinese subtropical forest. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2022.1113742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Understory herbaceous plants are an important component of forest ecosystems, playing important roles in species diversity and forest dynamics in forests. However, the current understanding of the biodiversity of forest communities is mostly from woody plants, and knowledge of community structure and species diversity for understory herbaceous plants remains scarce. In a subtropical forest in China, we investigated understory vascular herbaceous diversity from 300 plots (5 × 5 m) in the main growing season. In this study, we analyzed the community structure and diversity pattern of the understory herbaceous community and linked the species diversity pattern to both abiotic and biotic environments. We found a rich diversity of understory herbaceous communities in this forest (81 species belonging to 55 genera), and floristic elements at the genus level were dominated by tropical elements, followed by temperate elements. The diversity pattern of the understory herbaceous showed a significant habitat preference, with the highest diversity in the lowland valleys and then followed by in middle slopes. In addition, herbaceous diversity was significantly affected by both abiotic factors (such as terrain convexity) and biotic factors (such as the diversity of surrounding woody plants). Our study indicated that species diversity of understory herbaceous showed a remarkable habitat preference, such as lowland valleys, and highlighted the importance of both abiotic and biotic environments in driving herbaceous diversity patterns in the subtropical forest understory.
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22
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Xin K, Tian K, Yu Q, Han L, Zang Z. Effects of altitude on meat quality difference and its relationship with HIF-1α during postmortem maturation of beef. J Food Biochem 2022; 46:e14470. [PMID: 36288466 DOI: 10.1111/jfbc.14470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 01/14/2023]
Abstract
This study investigated the differences in meat quality during postmortem aging of yak meat from different altitudes as well as the relationship between the release of hypoxic factor HIF-1α and meat quality. The results showed that the HIF-1α increased with altitude but during aging process, there was an initial increase before a subsequent decrease (p < .05). Moreover, significant increases were showed in glycolytic potential, a* value, pH, HIF-1α mRNA expression, HIF-1α protein expression and shear force with altitude (p < .05). Additionally, the b* value, L* value, water holding power and MFI decreased significantly (p < .05). HIF-1α was shown, by PLS-DA method analysis, to be the main protein marker for differences in the quality during aging time of meat from three altitude groups. HIF-1α protein expression was high correlated with glycolytic potential, pH value, meat color, tenderness and water holding capacity during postmortem aging. The results demonstrated that HIF-1α is a novel marker protein that influences meat quality in yak from different altitudes and that HIF-1α-mediated glycolytic pathway was key to the meat quality during postmortem aging. PRACTICAL APPLICATIONS: Yak meat has the advantages of high protein, low fat, good amino acid and fatty acid composition, so the nutritional value of yak meat is in line with the current best-selling beef with less fat in domestic and foreign markets. But consumers often think that the meat tenderness of yak meat is worse than that of beef and improving the quality of yak meat was worthy of attention specifically. This study investigated the differences in meat quality during postmortem aging of yak meat at different altitudes and the relationship between hypoxic factor HIF-1α release and meat quality.
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Affiliation(s)
- Keqi Xin
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Kai Tian
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Qunli Yu
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Ling Han
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Zhixuan Zang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
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23
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Xin KQ, Liao J, Tian K, Yu QL, Tang DF, Han L. Changes in selenium-enriched chicken sausage containing chitosan nanoemulsion and quality changes in the nanoemulsion during storage. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Jiang Y, Huang J, Tian K, Yi X, Zheng H, Zhu Y, Guo T, Ji X. Cross-regulome profiling of RNA polymerases highlights the regulatory role of polymerase III on mRNA transcription by maintaining local chromatin architecture. Genome Biol 2022; 23:246. [PMID: 36443871 PMCID: PMC9703767 DOI: 10.1186/s13059-022-02812-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 11/07/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Mammalian cells have three types of RNA polymerases (Pols), Pol I, II, and III. However, the extent to which these polymerases are cross-regulated and the underlying mechanisms remain unclear. RESULTS We employ genome-wide profiling after acute depletion of Pol I, Pol II, or Pol III to assess cross-regulatory effects between these Pols. We find that these enzymes mainly affect the transcription of their own target genes, while certain genes are transcribed by the other polymerases. Importantly, the most active type of crosstalk is exemplified by the fact that Pol III depletion affects Pol II transcription. Pol II genes with transcription changes upon Pol III depletion are enriched in diverse cellular functions, and Pol III binding sites are found near their promoters. However, these Pol III binding sites do not correspond to transfer RNAs. Moreover, we demonstrate that Pol III regulates Pol II transcription and chromatin binding of the facilitates chromatin transcription (FACT) complex to alter local chromatin structures, which in turn affects the Pol II transcription rate. CONCLUSIONS Our results support a model suggesting that RNA polymerases show cross-regulatory effects: Pol III affects local chromatin structures and the FACT-Pol II axis to regulate the Pol II transcription rate at certain gene loci. This study provides a new perspective for understanding the dysregulation of Pol III in various tissues affected by developmental diseases.
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Affiliation(s)
- Yongpeng Jiang
- grid.452723.50000 0004 7887 9190Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871 China
| | - Jie Huang
- grid.452723.50000 0004 7887 9190Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871 China
| | - Kai Tian
- grid.452723.50000 0004 7887 9190Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871 China
| | - Xiao Yi
- grid.494629.40000 0004 8008 9315Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province China ,grid.494629.40000 0004 8008 9315Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province China ,Westlake Omics (Hangzhou) Biotechnology Co., Ltd, Hangzhou, 310024 China
| | - Haonan Zheng
- grid.452723.50000 0004 7887 9190Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871 China
| | - Yi Zhu
- grid.494629.40000 0004 8008 9315Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province China ,grid.494629.40000 0004 8008 9315Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province China ,Westlake Omics (Hangzhou) Biotechnology Co., Ltd, Hangzhou, 310024 China
| | - Tiannan Guo
- grid.494629.40000 0004 8008 9315Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province China ,grid.494629.40000 0004 8008 9315Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024 Zhejiang Province China ,Westlake Omics (Hangzhou) Biotechnology Co., Ltd, Hangzhou, 310024 China
| | - Xiong Ji
- grid.452723.50000 0004 7887 9190Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871 China
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25
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Jiang Y, Wang J, Sun M, Zuo D, Wang H, Shen J, Jiang W, Mu H, Ma X, Yin F, Lin J, Wang C, Yu S, Jiang L, Lv G, Liu F, Xue L, Tian K, Wang G, Zhou Z, Lv Y, Wang Z, Zhang T, Xu J, Yang L, Zhao K, Sun W, Tang Y, Cai Z, Wang S, Hua Y. Multi-omics analysis identifies osteosarcoma subtypes with distinct prognosis indicating stratified treatment. Nat Commun 2022; 13:7207. [PMID: 36418292 PMCID: PMC9684515 DOI: 10.1038/s41467-022-34689-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 11/03/2022] [Indexed: 11/27/2022] Open
Abstract
Osteosarcoma (OS) is a primary malignant bone tumor that most commonly affects children, adolescents, and young adults. Here, we comprehensively analyze genomic, epigenomic and transcriptomic data from 121 OS patients. Somatic mutations are diverse within the cohort, and only TP53 is significantly mutated. Through unsupervised integrative clustering of the multi-omics data, we classify OS into four subtypes with distinct molecular features and clinical prognosis: (1) Immune activated (S-IA), (2) Immune suppressed (S-IS), (3) Homologous recombination deficiency dominant (S-HRD), and (4) MYC driven (S-MD). MYC amplification with HR proficiency tumors is identified with a high oxidative phosphorylation signature resulting in resistance to neoadjuvant chemotherapy. Potential therapeutic targets are identified for each subtype, including platinum-based chemotherapy, immune checkpoint inhibitors, anti-VEGFR, anti-MYC and PARPi-based synthetic lethal strategies. Our comprehensive integrated characterization provides a valuable resource that deepens our understanding of the disease, and may guide future clinical strategies for the precision treatment of OS.
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Affiliation(s)
- Yafei Jiang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Jinzeng Wang
- grid.16821.3c0000 0004 0368 8293National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 PR China
| | - Mengxiong Sun
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Dongqing Zuo
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Hongsheng Wang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Jiakang Shen
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Wenyan Jiang
- grid.16821.3c0000 0004 0368 8293Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, 200001 Shanghai, PR China
| | - Haoran Mu
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Xiaojun Ma
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Fei Yin
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Jun Lin
- grid.16821.3c0000 0004 0368 8293Department of Pathology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Chongren Wang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Shuting Yu
- grid.16821.3c0000 0004 0368 8293National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 PR China
| | - Lu Jiang
- grid.16821.3c0000 0004 0368 8293National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 PR China
| | - Gang Lv
- grid.16821.3c0000 0004 0368 8293National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 PR China
| | - Feng Liu
- grid.16821.3c0000 0004 0368 8293National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 PR China
| | - Linghang Xue
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Kai Tian
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Gangyang Wang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Zifei Zhou
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Yu Lv
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Zhuoying Wang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Tao Zhang
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Jing Xu
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Liu Yang
- grid.16821.3c0000 0004 0368 8293National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 PR China
| | - Kewen Zhao
- grid.16821.3c0000 0004 0368 8293Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, 200001 Shanghai, PR China
| | - Wei Sun
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Yujie Tang
- grid.16821.3c0000 0004 0368 8293Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, 200001 Shanghai, PR China
| | - Zhengdong Cai
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
| | - Shengyue Wang
- grid.16821.3c0000 0004 0368 8293National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 PR China
| | - Yingqi Hua
- grid.16821.3c0000 0004 0368 8293Department of Orthopedic Oncology, Shanghai Bone Tumor Institute, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 PR China
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Wang Q, Wu Y, Peng A, Cui J, Zhao M, Pan Y, Zhang M, Tian K, Schwab W, Song C. Single-cell transcriptome atlas reveals developmental trajectories and a novel metabolic pathway of catechin esters in tea leaves. Plant Biotechnol J 2022; 20:2089-2106. [PMID: 35810348 PMCID: PMC9616531 DOI: 10.1111/pbi.13891] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/03/2022] [Accepted: 07/05/2022] [Indexed: 05/26/2023]
Abstract
The tea plant is an economically important woody beverage crop. The unique taste of tea is evoked by certain metabolites, especially catechin esters, whereas their precise formation mechanism in different cell types remains unclear. Here, a fast protoplast isolation method was established and the transcriptional profiles of 16 977 single cells from 1st and 3rd leaves were investigated. We first identified 79 marker genes based on six isolated tissues and constructed a transcriptome atlas, mapped developmental trajectories and further delineated the distribution of different cell types during leaf differentiation and genes associated with cell fate transformation. Interestingly, eight differently expressed genes were found to co-exist at four branch points. Genes involved in the biosynthesis of certain metabolites showed cell- and development-specific characteristics. An unexpected catechin ester glycosyltransferase was characterized for the first time in plants by a gene co-expression network in mesophyll cells. Thus, the first single-cell transcriptional landscape in woody crop leave was reported and a novel metabolism pathway of catechin esters in plants was discovered.
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Affiliation(s)
- Qiang Wang
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
| | - Yi Wu
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
| | - Anqi Peng
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
| | - Jilai Cui
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
- Key Laboratory of Tea Plant Biology of Henan ProvinceCollege of Life ScienceXinyang Normal UniversityXinyang, HenanChina
| | - Mingyue Zhao
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
| | - Yuting Pan
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
| | - Mengting Zhang
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
| | - Kai Tian
- Key Laboratory of Ecological Security for Water Source Region of Mid‐Line Project of South‐To‐North Diversion Project of Henan ProvinceSchool of Life Sciences and Agricultural EngineeringNanyang Normal UniversityNanyangChina
| | - Wilfried Schwab
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
- Biotechnology of Natural ProductsTechnische Universität MünchenFreisingGermany
| | - Chuankui Song
- State Key Laboratory of Tea Plant Biology and UtilizationInternational Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefei, AnhuiChina
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Tian K, Gao S, Jia Z, Xu W, Li K, Wu L. A study of combination unilateral subcutaneous botulinum toxin a treatment for androgenetic alopecia. J Cosmet Dermatol 2022; 21:5584-5590. [PMID: 35751480 DOI: 10.1111/jocd.15179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/14/2022] [Accepted: 06/20/2022] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To observe the efficacy of unilateral subcutaneous injection of botulinum toxin A combined with finasteride and minoxidil in the treatment of androgenic alopecia. METHODS Thirty-seven patients with androgenic alopecia were treated with finasteride and minoxidil as standard therapy and were randomly assigned to subcutaneous injections of botulinum toxin A in one hemisphere of the head at the beginning of a 6-month treatment. Before treatment, 3 months after treatment, and 6 months after treatment, the patient's head hair growth was photographed and evaluated. RESULTS After 3 and 6 months of treatment, hair density of the treated androgenic alopecia patients was higher than before treatment (p < 0.05), and the hair density of the botulinum toxin A injection side was higher than that of the control side (p < 0.05). After 6 months of treatment, the response rate of botulinum toxin A combined with finasteride and minoxidil was 77.5%, with no significant side effects observed. CONCLUSION Finasteride and minoxidil have a significant effect on androgenic alopecia, and the effect is further increased after combined with botulinum toxin A subcutaneous injection.
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Affiliation(s)
- Kai Tian
- Department of Plastic and Aesthetic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Suyue Gao
- Department of Dermatology and Cosmetic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Zou Jia
- Department of Plastic and Aesthetic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Wushuang Xu
- Department of Plastic and Aesthetic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Ke Li
- Department of Plastic and Aesthetic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lijun Wu
- Department of Plastic and Aesthetic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, China
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28
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Sun S, Zhang Z, Zhang Z, Deng P, Tian K, Wei C. How Do Human-Driven Vehicles Avoid Pedestrians in Interactive Environments? A Naturalistic Driving Study. Sensors (Basel) 2022; 22:7860. [PMID: 36298210 PMCID: PMC9610887 DOI: 10.3390/s22207860] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
One of the major challenges for autonomous vehicles (AVs) is how to drive in shared pedestrian environments. AVs cannot make their decisions and behaviour human-like or natural when they encounter pedestrians with different crossing intentions. The main reasons for this are the lack of natural driving data and the unclear rationale of the human-driven vehicle and pedestrian interaction. This paper aims to understand the underlying behaviour mechanisms using data of pedestrian-vehicle interactions from a naturalistic driving study (NDS). A naturalistic driving test platform was established to collect motion data of human-driven vehicles and pedestrians. A manual pedestrian intention judgment system was first developed to judge the pedestrian crossing intention at every moment in the interaction process. A total of 98 single pedestrian crossing events of interest were screened from 1274 pedestrian-vehicle interaction events under naturalistic driving conditions. Several performance metrics with quantitative data, including TTC, subjective judgment on pedestrian crossing intention (SJPCI), pedestrian position and crossing direction, and vehicle speed and deceleration were analyzed and applied to evaluate human-driven vehicles' yielding behaviour towards pedestrians. The results show how vehicles avoid pedestrians in different interaction scenarios, which are classified based on vehicle deceleration. The behaviour and intention results are needed by future AVs, to enable AVs to avoid pedestrians more naturally, safely, and smoothly.
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Affiliation(s)
- Shulei Sun
- Key Laboratory of Automobile Measurement and Control & Safety, Xihua University, Chengdu 610039, China
- Engineering Research Center of Advanced Energy Saving Driving Technology, Ministry of Education, Chengdu 610031, China
| | - Ziqiang Zhang
- Key Laboratory of Automobile Measurement and Control & Safety, Xihua University, Chengdu 610039, China
| | - Zhiqi Zhang
- Key Laboratory of Automobile Measurement and Control & Safety, Xihua University, Chengdu 610039, China
| | - Pengyi Deng
- Key Laboratory of Automobile Measurement and Control & Safety, Xihua University, Chengdu 610039, China
| | - Kai Tian
- Institute for Transport Studies, University of Leeds, Leeds LS2 9JT, UK
| | - Chongfeng Wei
- School of Mechanical and Aerospace Engineering, Queen’s University Belfast, Belfast BT9 5AG, UK
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29
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Zhu J, Feng J, Tian K, Li C, Li M, Qiu X. Functional characterization of CYP6G4 from the house fly in propoxur metabolism and resistance. Pestic Biochem Physiol 2022; 187:105186. [PMID: 36127048 DOI: 10.1016/j.pestbp.2022.105186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 07/24/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
The house fly (Musca domestica L.) (Diptera: Muscidae) is a global vector that can transmit >250 human and animal diseases. The control of house flies has heavily relied on the application of various chemical insecticides. The carbamate insecticide propoxur has been widely used for the control of house flies, and resistance to propoxur has been documented in many house fly populations worldwide. Previous studies have identified several propoxur resistance-conferring mutations in the target protein acetylcholinesterase; however, the molecular basis for metabolic resistance to propoxur remains unknown. In this study, we investigated the involvement of CYP6G4, a cytochrome P450 overexpressed in many insecticide resistant populations of Musca domestica, in propoxur metabolism and resistance by using combined approaches of recombinant protein-based insecticide metabolism and the Drosophila GAL4/UAS transgenic system. The recombinant CYP6G4 and its redox partners (NADPH-dependent cytochrome P450 reductase and cytochrome b5) were functionally expressed in Escherichia coli. Metabolism experiments showed that CYP6G4 was able to transform propoxur with a turnover rate of around 0.79 min-1. Six metabolites were putatively identified, suggesting that CYP6G4 could metabolize propoxur via hydroxylation, O-depropylation and N-demethylation. Moreover, bioassay results showed that ectopic overexpression of CYP6G4 in fruit flies significantly increased their tolerance to propoxur. Our in vivo and in vitro data convincingly demonstrate that CYP6G4 contributes to propoxur metabolism and resistance.
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Affiliation(s)
- Jiang Zhu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences. Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Feng
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences. Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kai Tian
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences. Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chong Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences. Beijing 100101, China
| | - Mei Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences. Beijing 100101, China
| | - Xinghui Qiu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences. Beijing 100101, China.
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30
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Wang H, Li B, Zuo L, Wang B, Yan Y, Tian K, Zhou R, Wang C, Chen X, Jiang Y, Zheng H, Qin F, Zhang B, Yu Y, Liu CP, Xu Y, Gao J, Qi Z, Deng W, Ji X. The transcriptional coactivator RUVBL2 regulates Pol II clustering with diverse transcription factors. Nat Commun 2022; 13:5703. [PMID: 36171202 PMCID: PMC9519968 DOI: 10.1038/s41467-022-33433-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 09/16/2022] [Indexed: 11/10/2022] Open
Abstract
RNA polymerase II (Pol II) apparatuses are compartmentalized into transcriptional clusters. Whether protein factors control these clusters remains unknown. In this study, we find that the ATPase-associated with diverse cellular activities (AAA + ) ATPase RUVBL2 co-occupies promoters with Pol II and various transcription factors. RUVBL2 interacts with unphosphorylated Pol II in chromatin to promote RPB1 carboxy-terminal domain (CTD) clustering and transcription initiation. Rapid depletion of RUVBL2 leads to a decrease in the number of Pol II clusters and inhibits nascent RNA synthesis, and tethering RUVBL2 to an active promoter enhances Pol II clustering at the promoter. We also identify target genes that are directly linked to the RUVBL2-Pol II axis. Many of these genes are hallmarks of cancers and encode proteins with diverse cellular functions. Our results demonstrate an emerging activity for RUVBL2 in regulating Pol II cluster formation in the nucleus. RNA polymerase II (Pol II) transcription factories play a central role in gene expression and 3D chromatin organization. Here, the authors demonstrate that RUVBL2 directly regulates Pol II clustering at active gene promoters.
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Affiliation(s)
- Hui Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China.,Department of Pathogenic Biology, Chengdu Medical College, Chengdu, 610500, China
| | - Boyuan Li
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Linyu Zuo
- Center for Quantitative Biology, Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Bo Wang
- Biomedical Pioneering Innovation Center (BIOPIC), Academy for Advanced Interdisciplinary Studies, Beijing Advanced Innovation Center for Genomics (ICG), Peking-Tsinghua Center for Life Sciences (CLS), School of Life Sciences, Peking University, Beijing, 100871, China
| | - Yan Yan
- Institute for TCM-X; MOE Key Laboratory of Bioinformatics; Bioinformatics Division, BNRist (Beijing National Research Center for Information Science and Technology); Department of Automation, Tsinghua University, Beijing, 100084, China.,Center for Synthetic and Systems Biology, Tsinghua University, Beijing, 100084, China
| | - Kai Tian
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Rong Zhou
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Chenlu Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Xizi Chen
- Fudan University Shanghai Cancer Center, Institutes of Biomedical Sciences, Shanghai Medical College of Fudan University, Shanghai, 200032, China
| | - Yongpeng Jiang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Haonan Zheng
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Fangfei Qin
- Synthetic and Functional Biomolecules Center, Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Bin Zhang
- Departments of Pathology and Laboratory Medicine, and Pediatrics, University of Rochester Medical Center, 601 Elmwood Ave, Box 608, Rochester, NY, 14642, USA
| | - Yang Yu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Chao-Pei Liu
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yanhui Xu
- Fudan University Shanghai Cancer Center, Institutes of Biomedical Sciences, Shanghai Medical College of Fudan University, Shanghai, 200032, China
| | - Juntao Gao
- Institute for TCM-X; MOE Key Laboratory of Bioinformatics; Bioinformatics Division, BNRist (Beijing National Research Center for Information Science and Technology); Department of Automation, Tsinghua University, Beijing, 100084, China.,Center for Synthetic and Systems Biology, Tsinghua University, Beijing, 100084, China
| | - Zhi Qi
- Center for Quantitative Biology, Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Wulan Deng
- Biomedical Pioneering Innovation Center (BIOPIC), Academy for Advanced Interdisciplinary Studies, Beijing Advanced Innovation Center for Genomics (ICG), Peking-Tsinghua Center for Life Sciences (CLS), School of Life Sciences, Peking University, Beijing, 100871, China
| | - Xiong Ji
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China.
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Tian K, An S, Zhao G, Ding Z. Two-Dimensional Electromagnetohydrodynamic (EMHD) Flows of Fractional Viscoelastic Fluids with Electrokinetic Effects. Nanomaterials (Basel) 2022; 12:3335. [PMID: 36234463 PMCID: PMC9565497 DOI: 10.3390/nano12193335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
The present study provides analytical and numerical solutions for an electromagnetohydrodynamic (EMHD) flow using a Caputo time-fractional Maxwell model. The flow is a typical rectangular channel flow. When the scale of the cross-stream is much smaller than the streamwise and spanwise scales, the model is approximated as a two-dimensional slit parallel plate flow. Moreover, the influence of the electric double layer (EDL) at the solid-liquid interface is also considered. The electro-osmotic force generated by the interaction between the electric field and the EDL will induce a flow (i.e., electro-osmotic flow). Due to the application of the electric field at the streamwise and the vertical magnetic field, the flow is driven by Lorentz force along the spanwise direction. Simultaneously, under the action of the magnetic field, the electro-osmotic flow induces a reverse Lorentz force, which inhibits the electro-osmotic flow. The result shows that resonance behavior can be found in both directions in which the flow is generated. However, compared with the classical Maxwell fluid, the slip velocity and resonance behavior of fractional Maxwell fluid are suppressed. In the spanwise direction, increasing the strength of magnetic field first promotes the slip velocity and resonance behavior, and then suppresses them, while in the streamwise direction, both the electro-osmotic flow and resonance behavior are suppressed with the magnetic field.
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Affiliation(s)
- Kai Tian
- School of Mathematical Science, Inner Mongolia University, Hohhot 010021, China
| | - Shujuan An
- School of Mathematical Science, Inner Mongolia University, Hohhot 010021, China
| | - Guangpu Zhao
- College of Sciences, Inner Mongolia University of Technology, Hohhot 010051, China
| | - Zhaodong Ding
- School of Mathematical Science, Inner Mongolia University, Hohhot 010021, China
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Hua Y, Qiang X, Tian K, Jiang Y, Wu F, Peng P. Abstract A037: TT-00420, a novel kinase inhibitor potentially benefiting c-Myc amplified/overexpressed osteosarcoma. Clin Cancer Res 2022. [DOI: 10.1158/1557-3265.sarcomas22-a037] [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
Osteosarcoma (OS) is the most common bone tumor in pediatric patients, whose effective therapies are of great unmet medical needs, particularly for those of high-risk features. c-Myc, a well-known oncogene, is commonly amplified/overexpressed in OS patients, contributes to dismal prognosis and associates with lower 5-year overall survival rate, which is also confirmed by our retrospective analysis for the correlation between c-Myc gene amplification/overexpression and patient prognosis in our patient cohort. TT-00420, a clinical-stage small molecule targeting Aurora A/B, VEGFRs, FGFRs, JAKs and CSF1R, has demonstrated down-regulation on c-Myc expression in TNBC studies. Moreover, as reported, Aurora kinases and c-Myc regulate each other back and forth, triggering maintenance of the malignant state. In this study, we examined the efficacy of TT-00420 in c-Myc-amplified/overexpressed OS. In pre-clinical clonogenic assay, TT-00420 significantly inhibited the colony formation in c-Myc-overexpressed OS cell lines in a dose-dependent manner. In MNNG/HOS cell line, we demonstrated that TT-00420 dramatically suppressed Aurora kinase pathway and blunted c-Myc protein expression level, indicating TT-00420 might down-regulate c-Myc by Aurora kinases inhibition. In pre-clinical in-vivo efficacy studies, 143B cells were injected into the medullary cavity of the tibia to make the orthotopic OS xenograft model. With 15 mg/kg/day treatment of TT-00420, tumor growth was obviously inhibited as compared to vehicle group. Immunohistochemistry (IHC) analyses in tumors revealed that TT-00420-treated tumors exhibited increased apoptosis with upregulated expression of cleaved caspase 3 (CC3) and H2AX, and significantly decreased proliferations with raised expression of Ki67. Moreover, in a c-Myc-overexpressed OS patient-derived xenograft (PDX) model from a male pediatric patient, 15 mg/kg/day TT-00420 dramatically blunted the tumor growth with a TGI of 87.6%. In China, an investigator-initiated trial is currently ongoing to evaluate the safety and tolerability of TT-00420 in OS patients with c-Myc overexpression (ChiCTR2000036618). Taken together, TT-00420 depicted robust anti-tumor activity in c-Myc overexpressed OS both in vitro and in vivo with downregulation of c-Myc expression, indicating its potential as a novel monotherapy for OS patients with c-Myc overexpression. Future clinical trial result is of great expectation.
Citation Format: Yingqi Hua, Xiaoyan Qiang, Kai Tian, Yafei Jiang, Frank Wu, Peng Peng. TT-00420, a novel kinase inhibitor potentially benefiting c-Myc amplified/overexpressed osteosarcoma [abstract]. In: Proceedings of the AACR Special Conference: Sarcomas; 2022 May 9-12; Montreal, QC, Canada. Philadelphia (PA): AACR; Clin Cancer Res 2022;28(18_Suppl):Abstract nr A037.
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Affiliation(s)
- Yingqi Hua
- 2Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai Bone Tumor Institution, Shanghai, China (Mainland)
| | - Xiaoyan Qiang
- 1TransThera Sciences (Nanjing), Inc., Nanjing, China (Mainland),
| | - Kai Tian
- 2Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai Bone Tumor Institution, Shanghai, China (Mainland)
| | - Yafei Jiang
- 2Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai Bone Tumor Institution, Shanghai, China (Mainland)
| | - Frank Wu
- 1TransThera Sciences (Nanjing), Inc., Nanjing, China (Mainland),
| | - Peng Peng
- 1TransThera Sciences (Nanjing), Inc., Nanjing, China (Mainland),
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Li Y, Huang J, Zhu J, Bao L, Wang H, Jiang Y, Tian K, Wang R, Zheng H, Duan W, Lai W, Yi X, Zhu Y, Guo T, Ji X. Targeted protein degradation reveals RNA Pol II heterogeneity and functional diversity. Mol Cell 2022; 82:3943-3959.e11. [PMID: 36113479 DOI: 10.1016/j.molcel.2022.08.023] [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: 03/03/2022] [Revised: 07/14/2022] [Accepted: 08/18/2022] [Indexed: 10/14/2022]
Abstract
RNA polymerase II (RNA Pol II) subunits are thought to be involved in various transcription-associated processes, but it is unclear whether they play different regulatory roles in modulating gene expression. Here, we performed nascent and mature transcript sequencing after the acute degradation of 12 mammalian RNA Pol II subunits and profiled their genomic binding sites and protein interactomes to dissect their molecular functions. We found that RNA Pol II subunits contribute differently to RNA Pol II cellular localization and transcription processes and preferentially regulate RNA processing (such as RNA splicing and 3' end maturation). Genes sensitive to the depletion of different RNA Pol II subunits tend to be involved in diverse biological functions and show different RNA half-lives. Sequences, associated protein factors, and RNA structures are correlated with RNA Pol II subunit-mediated differential gene expression. These findings collectively suggest that the heterogeneity of RNA Pol II and different genes appear to depend on some of the subunits.
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Affiliation(s)
- Yuanjun Li
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Jie Huang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Junyi Zhu
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Lijun Bao
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Hui Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Yongpeng Jiang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Kai Tian
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Rui Wang
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Haonan Zheng
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - WenJia Duan
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Weifeng Lai
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Xiao Yi
- Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China; Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Yi Zhu
- Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China; Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Tiannan Guo
- Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China; Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Xiong Ji
- Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, School of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.
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Tian K, Markkula G, Wei C, Sadraei E, Hirose T, Merat N, Romano R. Impacts of visual and cognitive distractions and time pressure on pedestrian crossing behaviour: A simulator study. Accid Anal Prev 2022; 174:106770. [PMID: 35853148 DOI: 10.1016/j.aap.2022.106770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 06/03/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Distractions have been recognised as one important factor associated with pedestrian injuries, as the increasing use of cell phones and personal devices. However, the situation is less clear regarding the differences in the effects of visual-manual and auditory-cognitive distractions. Here, we investigated distracted pedestrians in a one-lane road with continuous traffic using an immersive CAVE-based simulator. Sixty participants were recruited to complete a crossing task and perform one of two distractions, a visual-manual task and an auditory-cognitive task. Moreover, normal and time pressure crossing conditions were included as a baseline and comparison. For the first time, this study directly compared the impacts of visual-manual, auditory-cognitive distractions, and time pressure on pedestrian crossing behaviour and safety in a controlled environment. The results indicated that although pedestrian safety was compromised under both types of distraction, the effects of the applied distractions were different. When engaged in the visual-manual distraction, participants crossed the road slowly, but there was no significant difference in gap acceptance or initiation time compared to baseline. In contrast, participants walked slowly, crossed earlier, and accepted smaller gaps when performing the auditory-cognitive distraction. This has interesting parallels to existing findings on how these two types of distractions affect driver performance. Moreover, the effects of the visual-manual distraction were found to be dynamic, as these effects were affected by the gap size. Finally, compared to baseline, time pressure resulted in participants accepting smaller time gaps with shorter initiation times and crossing durations, leading to an increase in unsafe decisions and a decrease in near-collisions. These results provide new evidence that two types of distraction and time pressure impair pedestrian safety, but in different ways. Our findings may provide insights for further studies involving pedestrians with different distraction components.
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Affiliation(s)
- Kai Tian
- Institute for Transport Studies, University of Leeds, Leeds LS1 9JT, UK.
| | - Gustav Markkula
- Institute for Transport Studies, University of Leeds, Leeds LS1 9JT, UK
| | - Chongfeng Wei
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Belfast BT7 1NN, UK
| | - Ehsan Sadraei
- Institute for Transport Studies, University of Leeds, Leeds LS1 9JT, UK
| | - Toshiya Hirose
- Department of Engineering Science and Mechanics, Shibaura Institute of Technology, Tokyo, Japan
| | - Natasha Merat
- Institute for Transport Studies, University of Leeds, Leeds LS1 9JT, UK
| | - Richard Romano
- Institute for Transport Studies, University of Leeds, Leeds LS1 9JT, UK
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Yao B, Zeng X, Pang L, Kong X, Tian K, Ji Y, Sun S, Tian X. The Photodegradation of Lignin Methoxyl C Promotes Fungal Decomposition of Lignin Aromatic C Measured with 13C-CPMAS NMR. J Fungi (Basel) 2022; 8:jof8090900. [PMID: 36135625 PMCID: PMC9504352 DOI: 10.3390/jof8090900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/20/2022] [Accepted: 08/21/2022] [Indexed: 11/20/2022] Open
Abstract
Solar radiation has been regarded as a driver of litter decomposition in arid and semiarid ecosystems. Photodegradation of litter organic carbon (C) depends on chemical composition and water availability. However, the chemical changes in organic C that respond to solar radiation interacting with water pulses remain unknown. To explain changes in the chemical components of litter organic C exposed to UV-B, UV-A, and photosynthetically active radiation (PAR) mediated by water pulses, we measured the chemistry of marcescent Lindera glauca leaf litter by solid-state 13C cross-polarization magic angle spinning (CPMAS) nuclear magnetic resonance (NMR) over 494 days of litter decomposition with a microcosm experiment. Abiotic and biotic factors regulated litter decomposition via three pathways: first, photochemical mineralization of lignin methoxyl C rather than aromatic C exposed to UV radiation; second, the biological oxidation and leaching of cellulose O-alkyl C exposed to PAR and UV radiation interacts with water pulses; and third, the photopriming effect of UV radiation on lignin aromatic C rather than cellulose O-alkyl C under the interaction between radiation and water pulses. The robust decomposition index that explained the changes in the mass loss was the ratio of aromatic C to O-alkyl C (AR/OA) under radiation, but the ratio of hydrophobic to hydrophilic C (hydrophobicity), the carbohydrate C to methoxyl C ratio (CC/MC), and the alkyl C to O-alkyl C ratio (A/OA) under radiation were mediated by water pulses. Moreover, the photopriming effect and water availability promoted the potential activities of peroxidase and phenol oxidase associated with lignin degradation secreted by fungi. Our results suggest that direct photodegradation of lignin methoxyl C increases microbial accessibility to lignin aromatic C. Photo-oxidized compounds might be an additional C pool to regulate the stability of the soil C pool derived from plant litter by degrading lignin methoxyl and aromatic C.
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Affiliation(s)
- Bei Yao
- School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Xiaoyi Zeng
- School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Lu Pang
- School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Xiangshi Kong
- School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Kai Tian
- School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Yanli Ji
- School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Shucun Sun
- School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Xingjun Tian
- School of Life Sciences, Nanjing University, Nanjing 210023, China
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Correspondence: ; Tel.: +86-1385-1857-867
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Zhou R, Tian K, Huang J, Duan W, Fu H, Feng Y, Wang H, Jiang Y, Li Y, Wang R, Hu J, Ma H, Qi Z, Ji X. CTCF DNA binding domain undergoes dynamic and selective protein–protein interactions. iScience 2022; 25:105011. [PMID: 36117989 PMCID: PMC9474293 DOI: 10.1016/j.isci.2022.105011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/13/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022] Open
Abstract
CTCF is a predominant insulator protein required for three-dimensional chromatin organization. However, the roles of its insulation of enhancers in a 3D nuclear organization have not been fully explained. Here, we found that the CTCF DNA-binding domain (DBD) forms dynamic self-interacting clusters. Strikingly, CTCF DBD clusters were found to incorporate other insulator proteins but are not coenriched with transcriptional activators in the nucleus. This property is not observed in other domains of CTCF or the DBDs of other transcription factors. Moreover, endogenous CTCF shows a phenotype consistent with the DBD by forming small protein clusters and interacting with CTCF motif arrays that have fewer transcriptional activators bound. Our results reveal an interesting phenomenon in which CTCF DBD interacts with insulator proteins and selectively localizes to nuclear positions with lower concentrations of transcriptional activators, providing insights into the insulation function of CTCF. The CTCF DNA-binding domain forms protein clusters in vivo and in vitro CTCF DBD clusters colocalize with insulator proteins but not with activators Arginine residues of CTCF DBD are frequently mutated in cancers Multiple transcription factor DBDs form protein clusters
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Wei Q, Xue H, Sun C, Li J, He H, Amevor FK, Tan B, Ma M, Tian K, Zhang Z, Zhang Y, He H, Xia L, Zhu Q, Yin H, Cui C. Gga-miR-146b-3p promotes apoptosis and attenuate autophagy by targeting AKT1 in chicken granulosa cells. Theriogenology 2022; 190:52-64. [DOI: 10.1016/j.theriogenology.2022.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 07/03/2022] [Accepted: 07/25/2022] [Indexed: 11/28/2022]
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Wu X, Deng C, Su Y, Zhang C, Chen M, Tian K, Wu H, Xu S. The effect of prolonged formalin fixation on the expression of proteins in human brain tissues. Acta Histochem 2022; 124:151879. [PMID: 35358895 DOI: 10.1016/j.acthis.2022.151879] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/04/2022] [Accepted: 03/14/2022] [Indexed: 11/24/2022]
Abstract
Formalin-fixed, paraffin-embedded (FFPE) tissues have been widely used in researches. Proteins and nucleic acids in prolonged FFPE tissues display different degrees of degradation. We investigated the effect of prolonged formalin fixation on protein expression in human brain tissues. Twenty-eight middle prefrontal front cortex tissue blocks from human brains prefixed in formalin were obtained from a brain bank. The tissue blocks were divided into two groups, the control group and the prolonged fixation group. Quantitative immunocytochemistry was used to analyse the biological markers of Fox-3, Rbfox3 (NeuN), glial fibrillary acidic protein (GFAP), ionized calcium binding adapter molecule-1 (IBA-1) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH). Nissl staining showed that positive signaling of Nissl body was significantly decreased by 16.6% in the prolonged fixation group. In addition, the staining intensity of Nissl body was negatively correlated with fixation time. The level of NeuN immunoreactivity (ir) was significantly reduced by 19.31% in the prolonged fixation group. Moreover, there was a significant negative correlation between NeuN-ir and fixation time. There were no significant changes in GFAP-ir, IBA-1-ir and GAPDH-ir between control group and the prolonged fixation group. Prolonged formalin-fixed tissues showed time- and molecule-dependent protein changes, which may be potential confounders in the clinic and researches. Our study suggested short formalin fixation time is recommended when using PPFE brain tissues.
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He H, Li D, Tian Y, Wei Q, Amevor FK, Sun C, Yu C, Yang C, Du H, Jiang X, Ma M, Cui C, Zhang Z, Tian K, Zhang Y, Zhu Q, Yin H. miRNA sequencing analysis of healthy and atretic follicles of chickens revealed that miR-30a-5p inhibits granulosa cell death via targeting Beclin1. J Anim Sci Biotechnol 2022; 13:55. [PMID: 35410457 PMCID: PMC9003977 DOI: 10.1186/s40104-022-00697-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 02/21/2022] [Indexed: 01/15/2023] Open
Abstract
Background The egg production performance of chickens is affected by many factors, including genetics, nutrition and environmental conditions. These factors all play a role in egg production by affecting the development of follicles. MicroRNAs (miRNAs) are important non-coding RNAs that regulate biological processes by targeting genes or other non-coding RNAs after transcription. In the animal reproduction process, miRNA is known to affect the development and atresia of follicles by regulating apoptosis and autophagy of granulosa cells (GCs). Results In this study, we identified potential miRNAs in the atretic follicles of broody chickens and unatretic follicles of healthy chickens. We identified gga-miR-30a-5p in 50 differentially expressed miRNAs and found that gga-miR-30a-5p played a regulatory role in the development of chicken follicles. The function of miR-30a-5p was explored through the transfection test of miR-30a-5p inhibitor and miR-30a-5p mimics. In the study, we used qPCR, western blot and flow cytometry to detect granulosa cell apoptosis, autophagy and steroid hormone synthesis. Confocal microscopy and transmission electron microscopy are used for the observation of autophagolysosomes. The levels of estradiol (E2), progesterone (P4), malondialdehyde (MDA) and superoxide dismutase (SOD) were detected by ELISA. The results showed that miR-30a-5p showed a negative effect on autophagy and apoptosis of granulosa cells, and also contributed in steroid hormones and reactive oxygen species (ROS) production. In addition, the results obtained from the biosynthesis and dual luciferase experiments showed that Beclin1 was the target gene of miR-30a-5p. The rescue experiment conducted further confirmed that Beclin1 belongs to the miR-30a-5p regulatory pathway. Conclusions In summary, after deep miRNA sequencing on healthy and atretic follicles, the results indicated that miR-30a-5p inhibits granulosa cell death by inhibiting Beclin1. Supplementary Information The online version contains supplementary material available at 10.1186/s40104-022-00697-0.
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Affiliation(s)
- Haorong He
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Dongmei Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yongtong Tian
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Qinyao Wei
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Felix Kwame Amevor
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Congjiao Sun
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Chunlin Yu
- Animal Breeding and Genetics key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, 610066, China
| | - Chaowu Yang
- Animal Breeding and Genetics key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, 610066, China
| | - Huarui Du
- Animal Breeding and Genetics key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, 610066, China
| | - Xiaosong Jiang
- Animal Breeding and Genetics key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, 610066, China
| | - Menggen Ma
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
| | - Can Cui
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Zhichao Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Kai Tian
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yao Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Qing Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
| | - Huadong Yin
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
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Kong X, Wu C, Yao B, He Z, Lin H, He X, Lin Y, Cao T, Jia Y, Li Y, Tian K, Tian X. Algae, shrimp grazing, and fecal pellets synergistically increase microbial activity and enhance N immobilization during Typha angustifolia leaf litter decomposition. Environ Sci Pollut Res Int 2022; 29:17919-17931. [PMID: 34677766 DOI: 10.1007/s11356-021-16848-1] [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] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
Algae play an important role in ecological processes of aquatic ecosystems. Understanding the interactive effects of algae with invertebrates in litter decomposition is important for predicting the effects of global change on aquatic ecosystems. We manipulated Typha angustifolia litter to control exposure to shrimp fecal pellets and/or grazing, and the green alga Chlorella vulgaris were added to test their interactive effects on T. angustifolia litter decomposition. Our results showed that algae largely shortened microbial conditioning time and improved litter palatability (increasing litter quality), resulting in greater decomposition and higher fecal pellet production. Fecal pellets enhanced grazing effects on decomposition by increasing litter ash content. The effects of algae and especially fecal pellets on decomposition were dependent on or mediated by grazing. Without grazing, algae slightly promoted decomposition and marginally offset the negative effect of fecal pellets on litter decomposition. Shrimp grazing dramatically decreased microbial activity (extracellular enzyme activity and microbial respiration) at microbial conditioning stage while enhanced microbial activity after 84 days especially with both algae and fecal pellets present. Algae significantly upregulated N- and P-acquiring and slightly downregulated C-acquiring enzyme activity. Fecal pellets significantly depressed recalcitrant C-decomposition enzyme activity. Nevertheless, the three factors synergistically and significantly increased C loss and most enzyme activities, microbial respiration, and N immobilization, resulting in the decrease of litter C:N. Our results reveal the synergistic action of different trophic levels (autotrophs, heterotrophs, and primary consumers) in the complicated nutrient pathways of litter decomposition and provide support for predicting the effects of global changes (e.g., N deposition and CO2 enrichment), which have dramatically effects on alga dynamics and on ecological processes in aquatic ecosystems.
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Affiliation(s)
- Xiangshi Kong
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Jishou, 416000, People's Republic of China
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Can Wu
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Jishou, 416000, People's Republic of China
| | - Bei Yao
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Zaihua He
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Hong Lin
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Xingbing He
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Jishou, 416000, People's Republic of China
| | - Yonghui Lin
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Jishou, 416000, People's Republic of China
| | - Tingting Cao
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Yanyan Jia
- Huaiyin Institute of Agricultural Sciences, Huai'an, 223001, People's Republic of China
| | - Yongfei Li
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Jishou, 416000, People's Republic of China
| | - Kai Tian
- Key Laboratory of Ecological Security for Water Source Region of Mid-Line Project of South-To-North Diversion Project of Henan Province, School of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, People's Republic of China.
- Henan Collaborative Innovation Center of Water Security for Water Source Region of Mid-Line Project of South-To-North Diversion Project, Nanyang, 473061, People's Republic of China.
| | - Xingjun Tian
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China.
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, People's Republic of China.
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Wu L, Tian K, Ding Z, Zhao T, Zhang X, Cheng W, Gao S, Lu Q, Kaplan DL. MSC‐Laden Composite Hydrogels for Inflammation and Angiogenic Regulation for Skin Flap Repair. Advanced Therapeutics 2022. [DOI: 10.1002/adtp.202100231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lijun Wu
- Department of Plastic and Cosmetic Surgery The Second Affiliated Hospital of Soochow University Soochow University Suzhou 215004 P. R. China
| | - Kai Tian
- Department of Plastic and Cosmetic Surgery The Second Affiliated Hospital of Soochow University Soochow University Suzhou 215004 P. R. China
| | - Zhaozhao Ding
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 P. R. China
| | - Tianlan Zhao
- Department of Plastic and Cosmetic Surgery The Second Affiliated Hospital of Soochow University Soochow University Suzhou 215004 P. R. China
| | - Xiaoyi Zhang
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 P. R. China
| | - Weinan Cheng
- Department of Orthopedics School of Medicine The First Affiliated Hospital of Xiamen University Xiamen University Xiamen 361000 P. R. China
| | - Suyue Gao
- Department of Dermatology and Cosmetic Surgery The Affiliated Suzhou Hospital of Nanjing Medical University Suzhou 215002 P. R. China
| | - Qiang Lu
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 P. R. China
| | - David L. Kaplan
- Department of Biomedical Engineering Tufts University Medford MA 02155 USA
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Tian K, Liu Z, Jing T, Zhu Y. Rate-dependent input curve shaping of the piezoelectric actuator based optical resonator cavity displacement characteristics for an external cavity diode laser. Rev Sci Instrum 2021; 92:095008. [PMID: 34598525 DOI: 10.1063/5.0053858] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
In an external cavity diode laser, the rate-dependent nonlinearity of the piezoelectric actuator based optical resonator cavity (ORC) restricts its application in high-precision measurements. This paper proposes a rate-dependent nonlinear active suppression method for an ORC system based on the Hammerstein model. Using a back propagation neural network and system identification algorithm, a high-precision rate-dependent Hammerstein model of the ORC system is established. The B-spline curve is used to simplify the input voltage curve, and the optimized voltage curve that can obtain the linear displacement output is solved by the particle swarm optimization algorithm. The experimental results show that in the frequency range of 2-50 Hz, the regression coefficients (R2) of the ascent and descent stages at each experimental frequency of the ORC system increased to over 0.9998 and optimized the curve at the inflection point to suppress the vibration at the inflection point.
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Affiliation(s)
- Kai Tian
- State Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Zhigang Liu
- State Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Tao Jing
- State Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Yu Zhu
- State Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
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43
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Tian K, Di R, Wang L. Retraction Note: MicroRNA-23a enhances migration and invasion through PTEN in osteosarcoma. Cancer Gene Ther 2021; 28:1228. [PMID: 34211127 DOI: 10.1038/s41417-021-00363-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K Tian
- Department of Bone Surgery, The 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - R Di
- Department of Nose Surgery, The 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Wang
- Department of Bone Surgery, The 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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44
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Tian K, Feng J, Zhu J, Cheng J, Li M, Qiu X. Pyrethrin-resembling pyrethroids are metabolized more readily than heavily modified ones by CYP9As from Helicoverpa armigera. Pestic Biochem Physiol 2021; 176:104871. [PMID: 34119216 DOI: 10.1016/j.pestbp.2021.104871] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
The cotton bollworm, Helicoverpa armigera, is a polyphagous pest threatening many economically important crops worldwide. Until recently, synthetic pyrethroids remain in wide use for controlling pest insects including the cotton bollworm. Understanding the metabolic mechanism of pyrethroids in a given pest can provide significant implication for a smart choice of insecticides, and such information is useful for the development of novel selective and safe insecticides. In this study, we used complexes of recombinant H. armigera cytochrome P450 CYP9A and NADPH-dependent cytochrome P450 reductase to investigate the capacity of three CYP9A paralogs in the transformation of seven structurally different pyrethroids by metabolism assays. The results showed that the three paralogous CYP9As were able to metabolize multiple pyrethroids. Interestingly, all the three CYP9As transformed pyrethrin-resembling pyrethroids (e.g. bioallethrin) more efficiently than the heavily modified ones (e.g. bifenthrin). These findings suggest that herbivorous insects can cope with synthetic insecticides using their physiological systems that initially evolved to survive exposure to the defensive chemicals in their host plants, adding support to the pre-adaptation hypothesis.
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Affiliation(s)
- Kai Tian
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Feng
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiang Zhu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiagao Cheng
- School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Mei Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xinghui Qiu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
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Abstract
Abstract. Background: Recent work suggests that state anhedonia and its social aspect of loss of interest in people was an important predictor of suicidal ideation in adults. Aim: The current study investigated the relationship between state anhedonia, trait anhedonia, suicidal ideation, and suicide attempts in adolescents. Method: State anhedonia was assessed using the anhedonia subscale from the Child Mood and Feelings Questionnaire, while trait social anhedonia was assessed using the Adolescent Anticipatory and Consummatory Interpersonal Pleasure Scale and the Temporal Experience of Pleasure Scale. Results: Results indicated that state anhedonia was associated with suicidal ideation but not associated with past suicide attempts after controlling for depressive symptoms. Academic stressful events moderated the relationship between state anhedonia and suicidal ideation. Symptom-level analyses revealed that loss of interest in friends was most highly predictive of suicidal ideation compared with the other anhedonia components. Limitations: The current investigation was limited by its reliance on student samples and data from a single time point. Conclusion: The current study indicated that state anhedonia and its social component may be more informative of near-term suicidal ideation than trait anhedonia in adolescents.
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Affiliation(s)
- Xinhua Yang
- Department of Psychology, Hunan Agricultural University, Changsha, PR China
- Centre for Affective Disorders, Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Kai Tian
- Department of Psychology, Hunan Agricultural University, Changsha, PR China
| | - Dongfang Wang
- Department of Psychology, Hunan Agricultural University, Changsha, PR China
| | - Guangya Liu
- Department of Psychiatry, Brains Hospital of Hunan Province, Changsha, PR China
| | - Xiaoqun Liu
- Xiangya School of Public Health, Central South University, Changsha, PR China
| | - Phillippa Harrison
- Centre for Affective Disorders, Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
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Wu L, Gao S, Zhao T, Tian K, Zheng T, Zhang X, Xiao L, Ding Z, Lu Q, Kaplan DL. Pressure-driven spreadable deferoxamine-laden hydrogels for vascularized skin flaps. Biomater Sci 2021; 9:3162-3170. [PMID: 33881061 PMCID: PMC8096535 DOI: 10.1039/d1bm00053e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The development of hydrogels that support vascularization to improve the survival of skin flaps, yet establishing homogeneous angiogenic niches without compromising the ease of use in surgical settings remains a challenge. Here, pressure-driven spreadable hydrogels were developed utilizing beta-sheet rich silk nanofiber materials. These silk nanofiber-based hydrogels exhibited excellent spreading under mild pressure to form a thin coating to cover all the regions of the skin flaps. Deferoxamine (DFO) was loaded onto the silk nanofibers to support vascularization and these DFO-laden hydrogels were implanted under skin flaps in rats to fill the interface between the wound bed and the flap using the applied pressure. The thickness of the spread hydrogels was below 200 μm, minimizing the physical barrier effects from the hydrogels. The distribution of the hydrogels provided homogeneous angiogenic stimulation, accelerating rapid blood vessel network formation and significantly improving the survival of the skin flaps. The hydrogels also modulated the immune reactions, further facilitating the regeneration of the skin flaps. Considering the homogeneous distribution at the wound sites, improved vascularization, reduced barrier effects and low inflammation, these hydrogels appear to be promising candidates for use in tissue repair where a high blood supply is in demand. The pressure-driven spreading properties should simplify the use of the hydrogels in surgical settings to facilitate clinical translation.
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Affiliation(s)
- Lijun Wu
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China. and Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P. R. China
| | - Suyue Gao
- Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P. R. China and Department of Dermatology and Cosmetic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215002, Jiangsu, China
| | - Tianlan Zhao
- Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P. R. China
| | - Kai Tian
- Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P. R. China
| | - Tingyu Zheng
- Department of Plastic and Cosmetic Surgery, The Second Affiliated Hospital of Soochow University, Suzhou 215004, P. R. China
| | - Xiaoyi Zhang
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China.
| | - Liying Xiao
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China.
| | - Zhaozhao Ding
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China.
| | - Qiang Lu
- National Engineering Laboratory for Modern Silk & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People's Republic of China.
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
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Yang X, Huang J, Harrision P, Roser ME, Tian K, Wang D, Liu G. Motivational differences in unipolar and bipolar depression, manic bipolar, acute and stable phase schizophrenia. J Affect Disord 2021; 283:254-261. [PMID: 33571794 DOI: 10.1016/j.jad.2021.01.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 01/10/2021] [Accepted: 01/30/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Motivational anhedonia has been observed in patients with a wide range of mental disorders. However, the similarity and uniqueness of this deficit across diagnostic groups has not been thoroughly investigated. METHOD The study compared motivational deficits in 37 patients with major depressive disorder (MDD), 32 with bipolar depression, 33 with manic bipolar disorder (BD), 30 with acute phase and 33 with stable phase schizophrenia, as well as 47 healthy controls. Participants were administered the Effort-Expenditure for Reward Task which measures allocation of effort between a high-effort and a low-effort task for monetary rewards at varying magnitudes and probabilities. RESULTS Compared with healthy controls, BD manic, acute and stable phase schizophrenia patients were significantly less likely to choose the high-effort task in the high reward magnitude condition. BD manic and acute phase schizophrenia patients were significantly less likely to choose the high-effort task in the high probability condition. Acute and stable phase schizophrenia patients made less effort in the high estimated value condition. Bipolar manic patients made excessive effort in low estimated value but less effort in high estimated value. Contrary to expectations, both the unipolar and bipolar depression patients did not differ significantly from healthy controls in reward magnitude, probability, and estimated value conditions. Anhedonia and negative symptoms were associated with fewer high-effort task choices in schizophrenia patients. CONCLUSION Motivation anhedonia showed distinct patterns across psychiatric patients: acute phase schizophrenia was the most severely affected, bipolar mania was similar to schizophrenia, but bipolar depression was similar to unipolar depression.
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Affiliation(s)
- Xinhua Yang
- Department of Psychology, Hunan Agricultural University, Changsha, China; Brain Research & Imaging Centre, School of Psychology, Cognition Institute, Faculty of Health & Human Sciences, Plymouth University, UK..
| | - Jia Huang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Science, Beijing, China.
| | - Phillippa Harrision
- Centre for Affective Disorders, Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK..
| | - Matthew E Roser
- Brain Research & Imaging Centre, School of Psychology, Cognition Institute, Faculty of Health & Human Sciences, Plymouth University, UK..
| | - Kai Tian
- Department of Psychology, Hunan Agricultural University, Changsha, China.
| | - Dongfang Wang
- Department of Psychology, Hunan Agricultural University, Changsha, China.
| | - Guangya Liu
- Department of psychiatry, Brains Hospital of Hunan province, Changsha, China.
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Gao B, Tian K, Liu QP. A super Degasperis-Procesi equation and related integrable systems. Proc Math Phys Eng Sci 2021; 477:20200780. [PMID: 33642933 DOI: 10.1098/rspa.2020.0780] [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: 09/27/2020] [Accepted: 12/17/2020] [Indexed: 11/12/2022] Open
Abstract
Based on a 4 × 4 matrix spectral problem, a super Degasperis-Procesi (DP) equation is proposed. We show that under a reciprocal transformation, the super DP equation is related to the first negative flow of a super Kaup-Kupershmidt (KK) hierarchy, which turns out to be a particular reduction of a super Boussinesq hierarchy. The bi-Hamiltonian structure of the super Boussinesq hierarchy is established and subsequently produces a Hamiltonian structure, as well as a conjectured symplectic formulation of the super KK hierarchy via suitable reductions. With the help of the reciprocal transformation, the bi-Hamiltonian representation of the super DP equation is constructed from that of the super KK hierarchy. We also calculate a positive flow of the super DP hierarchy and explain its relations with the super KK equation. Infinitely many conservation laws are derived for the super DP equation, as well as its positive flow.
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Affiliation(s)
- Binfang Gao
- Faculty of Applied Mathematics, Shanxi University of Finance and Economics, Taiyuan 030006, People's Republic of China
| | - Kai Tian
- Department of Mathematics, China University of Mining and Technology, Beijing 100083, People's Republic of China
| | - Qing Ping Liu
- Department of Mathematics, China University of Mining and Technology, Beijing 100083, People's Republic of China
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Wang J, Liu Z, Feng A, Tian K, Wei Y, Wang W, Pan Q, Zhang L, Wang F, Zhang S. P60.04 The Association of Patient HLA Class I Genotype and Genomic Alterations of Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gao J, Wang N, Tian K. Tetracentron sinense (Trochodendraceae). Trends Genet 2021; 37:401-402. [PMID: 33487482 DOI: 10.1016/j.tig.2021.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 01/05/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Jianguo Gao
- Department of Ecology, Peking University, Beijing 100871, China.
| | - Ning Wang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Kai Tian
- College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, China
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