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Ao S, Luo X, Wu H, Zhou Y, Yang Q, Yin X, Fu H, Huang M, Lu D, Zhu K. Improved physicochemical stability of fish oil nanoemulsion via a dense interfacial layer formed by hyaluronic acid-poly(glyceryl)10-stearate. Food Chem 2024; 444:138585. [PMID: 38335680 DOI: 10.1016/j.foodchem.2024.138585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024]
Abstract
This study aimed to synthesize a novel emulsifier, hyaluronic acid-poly(glyceryl)10-stearate (HA-PG10-C18), and employ it for the fabrication of nanoemulsions incorporating deep-sea fish oil to improve their apparent solubility and physicochemical stability. 1H NMR and FT-IR analyses indicated successful synthesis of HA-PG10-C18. Nanoemulsions of deep-sea fish oil loaded with HA-PG10-C18 (HA-PG10-C18@NE) were successfully fabricated by ultrasonic emulsification. The fixed aqueous layer thickness (FALT) of PG10-C18@NE and HA-PG10-C18@NE was determined and the FALT of both nanoemulsions was similar, while the surface density of HA-PG10-C18@NE (4.92 × 10-12 ng/nm2) is 60 % higher than that of PG10-C18@NE (3.07 × 10-12 ng/nm2). Notably, HA-PG10-C18@NE demonstrated an exceptional physicochemical stability when exposed to various stressed environmental conditions, especially its freeze-thaw stability. Moreover, after simulated in vitro digestion, the HA-PG10-C18@NE exhibited a comparatively greater liberation of free fatty acids (94.0 ± 1.7 %) when compared to the release observed in PG10-C18@NE (85.5 ± 2.2 %).
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Affiliation(s)
- Sha Ao
- Center for Drug Delivery System Research, School of Medicine, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China; Zhejiang Engineering Research Center of Fat-soluble Vitamin, School of Chemistry and Chemical Engineering, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Xiang Luo
- Center for Drug Delivery System Research, School of Medicine, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China; Zhejiang Engineering Research Center of Fat-soluble Vitamin, School of Chemistry and Chemical Engineering, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Hongze Wu
- Center for Drug Delivery System Research, School of Medicine, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China; Zhejiang Engineering Research Center of Fat-soluble Vitamin, School of Chemistry and Chemical Engineering, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Yanyan Zhou
- Center for Drug Delivery System Research, School of Medicine, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Qun Yang
- School of Medicine and Health, Shaoxing University Yuanpei College, 2799 Qunxian Middle Road, Shaoxing, Zhejiang 312000, China
| | - Xuguang Yin
- Center for Drug Delivery System Research, School of Medicine, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Hongliang Fu
- Center for Drug Delivery System Research, School of Medicine, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Mengyu Huang
- Zhejiang Engineering Research Center of Fat-soluble Vitamin, School of Chemistry and Chemical Engineering, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Dandan Lu
- Zhejiang Engineering Research Center of Fat-soluble Vitamin, School of Chemistry and Chemical Engineering, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China
| | - Kewu Zhu
- Center for Drug Delivery System Research, School of Medicine, Shaoxing University, 900 Chengnan Avenue, Shaoxing, Zhejiang 312000, China.
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2
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Lu D, Galvão BRL, Varandas AJC, Guo H. Correction: Quantum and semiclassical studies of nonadiabatic electronic transitions between N( 4S) and N( 2D) by collisions with N 2. Phys Chem Chem Phys 2024. [PMID: 38623930 DOI: 10.1039/d4cp90064b] [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: 04/17/2024]
Abstract
Correction for 'Quantum and semiclassical studies of nonadiabatic electronic transitions between N(4S) and N(2D) by collisions with N2' by Dandan Lu et al., Phys. Chem. Chem. Phys., 2023, 25, 15656-15665, https://doi.org/10.1039/D3CP01429K.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, 87131, New Mexico, USA.
| | - Breno R L Galvão
- Centro Federal de Educação Tecnológica de Minas Gerais, CEFET-MG, Av. Amazonas 5253, (30421-169), Belo Horizonte, Minas Gerais, Brazil
| | - Antonio J C Varandas
- Departamento de Física, Universidade Federal do Espírito Santo, Vitória, Brazil
- Coimbra Chemistry Centre and Chemistry Department, University of Coimbra, Coimbra, Portugal
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, 87131, New Mexico, USA.
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3
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Liu Y, Ge H, Lu D. Functional proteomics reveals that Slr0237 is a SigE-regulated glycogen debranching enzyme pivotal for glycogen breakdown. Proteomics 2024:e2300222. [PMID: 38581091 DOI: 10.1002/pmic.202300222] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 03/04/2024] [Accepted: 03/14/2024] [Indexed: 04/08/2024]
Abstract
The group 2 σ factor for RNA polymerase SigE plays important role in regulating central carbon metabolism in cyanobacteria. However, the regulation of SigE for these pathways at a proteome level remains unknown. Using a sigE-deficient strain (ΔsigE) of Synechocystis sp. PCC 6803 and quantitative proteomics, we found that SigE depletion induces differential protein expression for sugar catabolic pathways including glycolysis, oxidative pentose phosphate (OPP) pathway, and glycogen catabolism. Two glycogen debranching enzyme homologues Slr1857 and Slr0237 are found differentially expressed in ΔsigE. Glycogen determination indicated that Δslr0237 accumulated glycogen under photomixotrophic condition but was unable to utilize these reserves in the dark, whereas Δslr1857 accumulates and utilizes glycogen in a similar way as the WT strain does in the same condition. These results suggest that Slr0237 plays the major role as the glycogen debranching enzyme in Synechocystis.
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Affiliation(s)
- Ye Liu
- Science & Technology Department of Sichuan Province, Chengdu, Sichuan, China
| | - Haitao Ge
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, Henan, China
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4
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Lu D, Guo H. Correction to "Quantum and Semiclassical Dynamics of Nonadiabatic Electronic Excitation of C( 3P) to C( 1D) by Hyperthermal Collisions with N 2". J Phys Chem A 2024; 128:2681. [PMID: 38518251 DOI: 10.1021/acs.jpca.4c01545] [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: 03/24/2024]
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Lu D, Mihoayi M, Ablikim Y, Arikin A. RNA splicing regulator EIF3D regulates the tumor microenvironment through immunogene-related alternative splicing in head and neck squamous cell carcinoma. Aging (Albany NY) 2024; 16:5929-5948. [PMID: 38535990 DOI: 10.18632/aging.205681] [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: 10/18/2023] [Accepted: 02/27/2024] [Indexed: 04/23/2024]
Abstract
Study finds that eukaryotic translation initiation factor 3 subunit D (EIF3D) may play an important role in aberrant alternative splicing (AS) events in tumors. AS possesses a pivotal role in both tumour progression and the constitution of the tumour microenvironment (TME). Regrettably, our current understanding of AS remains circumscribed especially in the context of immunogene-related alternative splicing (IGAS) profiles within Head and Neck Squamous Cell Carcinoma (HNSC). In this study, we comprehensively analyzed the function and mechanism of action of EIF3D by bioinformatics analysis combined with in vitro cellular experiments, and found that high expression of EIF3D in HNSC was associated with poor prognosis of overall survival (OS) and progression-free survival (PFS). The EIF3D low expression group had a higher degree of immune infiltration and better efficacy against PD1 and CTLA4 immunotherapy compared to the EIF3D high expression group. TCGA SpliceSeq analysis illustrated that EIF3D influenced differentially spliced alternative splicing (DSAS) events involving 105 differentially expressed immunogenes (DEIGs). We observed an induction of apoptosis and a suppression of cell proliferation, migration, and invasion in EIF3D knock-down FaDu cells. RNA-seq analysis unveiled that 531 genes exhibited differential expression following EIF3D knockdown in FaDu cells. These include 52 DEIGs. Furthermore, EIF3D knockdown influenced the patterns of 1923 alternative splicing events (ASEs), encompassing 129 IGASs. This study identified an RNA splicing regulator and revealed its regulatory role in IGAS and the TME of HNSC, suggesting that EIF3D may be a potential target for predicting HNSC prognosis and immunotherapeutic response.
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Affiliation(s)
- Dandan Lu
- Otolaryngology Diagnosis and Treatment Center, People’s Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830000, China
- Department of Otolaryngology, Shaanxi Nuclear Industry 215 Hospital, Xianyang 712000, China
| | - Mijti Mihoayi
- Otolaryngology Diagnosis and Treatment Center, People’s Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830000, China
| | - Yimin Ablikim
- Otolaryngology Diagnosis and Treatment Center, People’s Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830000, China
| | - Abdeyrim Arikin
- Otolaryngology Diagnosis and Treatment Center, People’s Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830000, China
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Su Z, Lei B, Lu D, Lai S, Zhang X. Impact of ecological presence in virtual reality tourism on enhancing tourists' environmentally responsible behavior. Sci Rep 2024; 14:5939. [PMID: 38467806 PMCID: PMC10928231 DOI: 10.1038/s41598-024-56615-z] [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: 03/08/2024] [Indexed: 03/13/2024] Open
Abstract
In an era where environmental conservation is increasingly critical, identifying pathways through which technological innovations like virtual reality tourism (VRT) can promote sustainable behaviors is vital. This study investigates the impact of 'ecological presence', a newly proposed sub-dimension of presence in VRT, on tourists' environmentally responsible behavior (TERB). Through structural equation modeling and fuzzy set qualitative comparative analysis of data from 290 participants, we unveil that ecological presence-defined as the authenticity and immersion of tourists in virtual ecological environments-significantly bolsters biospheric values, environmental self-identity, and personal norms. Additionally, our findings indicate that ecological presence in VRT indirectly promotes TERB, predominantly through the mediation of enhanced biospheric values and environmental self-identity. Notably, ecological presence, biospheric values, and environmental self-identity constitutes a sufficient condition for achieving a high level of TERB. This research highlights the potential of VRT as an innovative tool for tourism administrators to foster environmental stewardship, offering a novel approach to leveraging technology for conservation efforts.
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Affiliation(s)
- Zhen Su
- Department of Tourism Management, Business School, Guangxi University, No. 100 East Daxue Road, Nanning, 530004, China
- Guangxi Development Strategy Institute, Nanning, 530004, China
- Key Laboratory of Interdisciplinary Science of Statistics and Management, Nanning, 530004, China
| | - Biman Lei
- Department of Tourism Management, Business School, Guangxi University, No. 100 East Daxue Road, Nanning, 530004, China
| | - Dandan Lu
- Department of Tourism Management, Business School, Guangxi University of Finance and Economics, Nanning, 530008, China.
| | - Shuchen Lai
- Department of Tourism Management, Business School, Guangxi University, No. 100 East Daxue Road, Nanning, 530004, China
| | - Xijing Zhang
- Department of Tourism Management, Business School, Guangxi University, No. 100 East Daxue Road, Nanning, 530004, China
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Zhang G, Lu D, Guo H, Gao H. Imaging the state-to-state charge-transfer dynamics between the spin-orbit excited Ar +( 2P 1/2) ion and N 2. Nat Commun 2024; 15:1001. [PMID: 38307864 DOI: 10.1038/s41467-024-45344-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 01/16/2024] [Indexed: 02/04/2024] Open
Abstract
Ar++N2 → Ar+N2+ has served as a paradigm for charge-transfer dynamics studies during the last several decades. Despite significant experimental and theoretical efforts on this model system, state-resolved experimental investigations on the microscopic charge-transfer mechanism between the spin-orbit excited Ar+(2P1/2) ion and N2 have been rare. Here, we measure the first quantum state-to-state differential cross sections for Ar++N2 → Ar+N2+ with the Ar+ ion prepared exclusively in the spin-orbit excited state 2P1/2 on a crossed-beam setup with three-dimensional velocity-map imaging. Trajectory surface-hopping calculations qualitatively reproduce the vibrationally dependent rotational and angular distributions of the N2+ product. Both the scattering images and theoretical calculations show that the charge-transfer dynamics of the spin-orbit excited Ar+(2P1/2) ion differs significantly from that of the spin-orbit ground Ar+(2P3/2) when colliding with N2. Such state-to-state information makes quantitative understanding of this benchmark charge-transfer reaction within reach.
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Affiliation(s)
- Guodong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Dandan Lu
- Department of Chemistry and Chemical Biology, Center for Computational Chemistry, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Hua Guo
- Department of Chemistry and Chemical Biology, Center for Computational Chemistry, University of New Mexico, Albuquerque, NM, 87131, USA.
| | - Hong Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.
- University of Chinese Academy of Sciences, 100049, Beijing, China.
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Zhang Y, Gong H, Zhu D, Lu D, Zhou S, Wang Y, Dai X. A two-stage partial nitritation-denitritation/anammox (PN-DN/A) process to treat high-solid anaerobic digestion (HSAD) reject water: Verification based on pilot-scale and full-scale projects. Water Res X 2024; 22:100213. [PMID: 38414757 PMCID: PMC10897884 DOI: 10.1016/j.wroa.2024.100213] [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: 11/29/2023] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/29/2024]
Abstract
High-solid anaerobic digestion (HSAD) reject water, distinguished by elevated levels of chemical oxygen demand (COD), NH4+-N and an imbalanced COD/TIN, presents a significant challenge for treatment through conventional partial nitritation/ anammox (PN/A) process. This study introduced a revised two-stage PN/A process, namely partial nitritation/denitritation-anammox (PN-DN/A) process. Its effectiveness was investigated through both pilot-scale (12 t/d) and full-scale (400 t/d) operations, showcasing stable operation with an impressive total removal rate of over 90 % for total inorganic nitrogen (TIN) and exceeding 60 % for COD. Notably, 30 % of TIN was eliminated through heterotrophic denitritation in partial nitritation-denitritation (PN-DN) stage, while approximately 55 % of TIN removal occurred in the anammox stage with anaerobic ammonium oxidizing bacteria (AnAOB) enrichment (Candidatus Kuenenia, 25.9 % and 26.6 % relative abundance for pilot and full scale). In the PN-DN stage, aerobic-anaerobic alternation promoted organics elimination (around 50 % COD) and balanced nitrogen species. Microbial and metagenomic analysis verified the coupling between autotrophic and heterotrophic denitritation and demonstrated that PN-DN stage acted as a protective buffer for anammox stage. This comprehensive study highlights the PN-DN/A process's efficacy in stably treating HSAD reject water.
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Affiliation(s)
- Yanyan Zhang
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Hui Gong
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Danyang Zhu
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Dandan Lu
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Shuyan Zhou
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Yayi Wang
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Xiaohu Dai
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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Yan T, Hu C, Que Y, Song Y, Lu D, Gu J, Ren Y, He J. Chitosan coating enriched with biosynthetic CuO NPs: Effects on postharvest decay and quality of mango fruit. Int J Biol Macromol 2023; 253:126668. [PMID: 37660851 DOI: 10.1016/j.ijbiomac.2023.126668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/08/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
A chitosan-based nanocomposite film (CSC) was developed by mixing chitosan (CS, 2 %, v/v) and copper oxide nanoparticles (CuO NPs, 500 μg∙mL-1) synthesized using Alpinia officinarum extract for the safe storage of mango fruit. The effects of CuO NPs on the morphological, mechanical, thermal, physical and antifungal properties of the CS films and postharvest quality of mango fruit were determined. Scanning electron microscopy (SEM) analysis confirmed that CuO NPs were uniformly dispersed into the CS matrix. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) profiles showed that intermolecular H-bondings occurred between CS and CuO NPs, accompanied by decreased crystallinity and increased amorphous structure. In comparison to the pure CS film, addition of CuO NPs obviously improved the morphological, mechanical, thermal, physical and antifungal properties of CSC film. CSC coating treatment obviously delayed the fruit decay and yellowing, as well as reduced losses of weight and firmness of mango (Mangifera indica L.) fruit during the storage, when compared with the control and CS coating treatment. Meanwhile, it significantly decreased the respiration rate and ethylene generation and maintained high level of ascorbic acid (AsA), titratable acid (TA) and soluble sugar content (SSC) of the fruit during the storage. Notably, Cu presented in the CSC film was restrained to the peel, indicating that the CSC coated mango fruit had good edible safety. Principal component analysis (PCA) confirmed that CSC coating played a positive role in mango preservation. Therefore, CSC coating can be considered a potential application for successfully controlling of postharvest disease and prolonging the shelf life for mango fruit.
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Affiliation(s)
- Tengyu Yan
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Chunmei Hu
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Yuqing Que
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Yaping Song
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Dandan Lu
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Jinyu Gu
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Yanfang Ren
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China.
| | - Junyu He
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China.
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Wu J, Chen S, Wang C, Lin W, Huang C, Fan C, Han D, Lu D, Xu X, Sui S, Zhang L. Regulatory dynamics of the higher-plant PSI-LHCI supercomplex during state transitions. Mol Plant 2023; 16:1937-1950. [PMID: 37936349 DOI: 10.1016/j.molp.2023.11.002] [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] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 09/12/2023] [Accepted: 11/06/2023] [Indexed: 11/09/2023]
Abstract
State transition is a fundamental light acclimation mechanism of photosynthetic organisms in response to the environmental light conditions. This process rebalances the excitation energy between photosystem I (PSI) and photosystem II through regulated reversible binding of the light-harvesting complex II (LHCII) to PSI. However, the structural reorganization of PSI-LHCI, the dynamic binding of LHCII, and the regulatory mechanisms underlying state transitions are less understood in higher plants. In this study, using cryoelectron microscopy we resolved the structures of PSI-LHCI in both state 1 (PSI-LHCI-ST1) and state 2 (PSI-LHCI-LHCII-ST2) from Arabidopsis thaliana. Combined genetic and functional analyses revealed novel contacts between Lhcb1 and PsaK that further enhanced the binding of the LHCII trimer to the PSI core with the known interactions between phosphorylated Lhcb2 and the PsaL/PsaH/PsaO subunits. Specifically, PsaO was absent in the PSI-LHCI-ST1 supercomplex but present in the PSI-LHCI-LHCII-ST2 supercomplex, in which the PsaL/PsaK/PsaA subunits undergo several conformational changes to strengthen the binding of PsaO in ST2. Furthermore, the PSI-LHCI module adopts a more compact configuration with shorter Mg-to-Mg distances between the chlorophylls, which may enhance the energy transfer efficiency from the peripheral antenna to the PSI core in ST2. Collectively, our work provides novel structural and functional insights into the mechanisms of light acclimation during state transitions in higher plants.
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Affiliation(s)
- Jianghao Wu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China
| | - Shuaijiabin Chen
- School of Life Science, Southern University of Science and Technology, Shenzhen 518055, China; State Key Laboratory of Membrane Biology, Beijing Advanced Innovation Center for Structural Biology, Beijing Frontier Research Center for Biological Structure, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Chao Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China
| | - Weijun Lin
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Chao Huang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China
| | - Chengxu Fan
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China
| | - Dexian Han
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China
| | - Xiumei Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China
| | - SenFang Sui
- School of Life Science, Southern University of Science and Technology, Shenzhen 518055, China; State Key Laboratory of Membrane Biology, Beijing Advanced Innovation Center for Structural Biology, Beijing Frontier Research Center for Biological Structure, School of Life Sciences, Tsinghua University, Beijing 100084, China; Cryo-EM Center, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Lixin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China.
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Lu D, Wu K, Wen TB, Hao W, Zhang HJ. Unusual Kinetics Induced by Ligands in Rhodium(III)-Catalyzed Dehydrogenative Olefination Reactions. J Org Chem 2023. [PMID: 37987772 DOI: 10.1021/acs.joc.3c01300] [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: 11/22/2023]
Abstract
In this study, we investigate the effects of ligands on C-H activation during rhodium(III)-catalyzed C-H bond olefination reactions using well-defined [CpXRhIII] catalytic systems with three representative CpX (Cp (η5-C5H5), CpCF3 (η5-C5Me4CF3), and Cp* (η5-C5Me5)) ligands. Our results demonstrate that C-H activation as the rate-limiting step is significantly influenced by the steric properties of the CpX ligands. Moreover, we observe a dramatic acceleration of the simple [CpRhIII]-catalyzed C-H olefination reaction with acid coproducts such as HOAc, implying an autocatalytic C-H activation process.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
| | - Kongchuan Wu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
| | - Ting-Bin Wen
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
| | - Wei Hao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hui-Jun Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
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12
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Tan Z, Lu D, Yu Y, Li L, Dong W, Xu L, Yang Q, Wan X, Liang H. Genome-Wide Identification and Characterization of the bHLH Gene Family and Its Response to Abiotic Stresses in Carthamus tinctorius. Plants (Basel) 2023; 12:3764. [PMID: 37960120 PMCID: PMC10648185 DOI: 10.3390/plants12213764] [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: 09/14/2023] [Revised: 10/16/2023] [Accepted: 11/02/2023] [Indexed: 11/15/2023]
Abstract
The basic helix-loop-helix (bHLH) transcription factors possess DNA-binding and dimerization domains and are involved in various biological and physiological processes, such as growth and development, the regulation of secondary metabolites, and stress response. However, the bHLH gene family in C. tinctorius has not been investigated. In this study, we performed a genome-wide identification and analysis of bHLH transcription factors in C. tinctorius. A total of 120 CtbHLH genes were identified, distributed across all 12 chromosomes, and classified into 24 subfamilies based on their phylogenetic relationships. Moreover, the 120 CtbHLH genes were subjected to comprehensive analyses, including protein sequence alignment, evolutionary assessment, motif prediction, and the analysis of promoter cis-acting elements. The promoter region analysis revealed that CtbHLH genes encompass cis-acting elements and were associated with various aspects of plant growth and development, responses to phytohormones, as well as responses to both abiotic and biotic stresses. Expression profiles, sourced from transcriptome databases, indicated distinct expression patterns among these CtbHLH genes, which appeared to be either tissue-specific or specific to certain cultivars. To further explore their functionality, we determined the expression levels of fifteen CtbHLH genes known to harbor motifs related to abiotic and hormone responses. This investigation encompassed treatments with ABA, salt, drought, and MeJA. The results demonstrated substantial variations in the expression patterns of CtbHLH genes in response to these abiotic and hormonal treatments. In summary, our study establishes a solid foundation for future inquiries into the roles and regulatory mechanisms of the CtbHLH gene family.
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Affiliation(s)
- Zhengwei Tan
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Dandan Lu
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Yongliang Yu
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Lei Li
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Wei Dong
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Lanjie Xu
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Qing Yang
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Xiufu Wan
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijng 100700, China;
| | - Huizhen Liang
- Institute of Chinese Herbel Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; (Z.T.); (D.L.); (Y.Y.); (L.L.); (W.D.); (L.X.); (Q.Y.)
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
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Abstract
Dental caries is a dynamic disease induced by the unbalance between demineralization of dental hard tissues caused by biofilm and remineralization of them; however, although various effective remineralization methods have been well documented, it is a challenge to reestablish the balance by enhancing remineralization alone while ignoring the antibacterial therapy. Therefore, the integration of remineralizing and antibacterial technologies offers a promising strategy to halt natural caries progression in clinical practice. Here, the conception of interrupting dental caries (IDC) was proposed based on the development of dual-functional coating with remineralizing and antibacterial properties. In this study, bovine serum albumin (BSA) loaded octenidine (OCT) successfully to form a BSA-OCT composite. Subsequently, through fast amyloid-like aggregation, the phase-transited BSA-OCT (PTB-OCT) coating can be covered on teeth, resin composite, or sealant surfaces in 30 min by a simple smearing process. The PTB-OCT coating showed satisfactory effects in promoting the remineralization of demineralized enamel and dentin in vitro. Moreover, this coating also exerted significant acid-resistance stability and anti-biofilm properties. Equally importantly, this coating exhibited promising abilities in reducing the microleakage between the tooth and resin composite in vitro and preventing primary and secondary caries in vivo. In conclusion, this novel dual-functional PTB-OCT coating could reestablish the balance between demineralization and remineralization in the process of caries, thereby potentially preventing or arresting caries.
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Affiliation(s)
- D Lu
- School of Stomatology, Hospital of Stomatology, Tianjin Medical University, Tianjin, China
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - F Li
- School of Stomatology, Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - C Zhao
- School of Stomatology, Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - Y Ye
- School of Stomatology, Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - X Zhang
- School of Stomatology, Hospital of Stomatology, Tianjin Medical University, Tianjin, China
| | - P Yang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - X Zhang
- School of Stomatology, Hospital of Stomatology, Tianjin Medical University, Tianjin, China
- Institute of Stomatology, Tianjin Medical University, Tianjin, China
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Caracciolo A, San Vicente Veliz JC, Lu D, Guo H, Meuwly M, Minton TK. Experimental and Theoretical Studies of Hyperthermal N + O 2 Collisions. J Phys Chem A 2023; 127:8834-8848. [PMID: 37843300 DOI: 10.1021/acs.jpca.3c04516] [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: 10/17/2023]
Abstract
The dynamics of hyperthermal N(4S) + O2 collisions were investigated both experimentally and theoretically. Crossed molecular beams experiments were performed at an average center-of-mass (c.m.) collision energy of ⟨Ecoll⟩ = 77.5 kcal mol-1, with velocity- and angle-resolved product detection by a rotatable mass spectrometer detector. Nonreactive (N + O2) and reactive (NO + O) product channels were identified. In the c.m. reference frame, the nonreactively scattered N atoms and reactively scattered NO molecules were both directed into the forward direction with respect to the initial direction of the reagent N atoms. On average, more than 90% of the available energy (⟨Eavl⟩ = 77.5 kcal mol-1) was retained in translation of the nonreactive products (N + O2), whereas a much smaller fraction of the available energy for the reactive pathway (⟨Eavl⟩ = 109.5 kcal mol-1) went into translation of the NO + O products, and the distribution of translational energies for this channel was broad, indicating extensive internal excitation in the nascent NO molecules. The experimentally derived c.m. translational energy and angular distributions of the reactive products suggested at least two dynamical pathways to the formation of NO + O. Quasiclassical trajectory (QCT) calculations were performed with a collision energy of Ecoll = 77 kcal mol-1 using two sets of potential energy surfaces, denoted as PES-I and PES-II, and these theoretical results were compared to each other and to the experimental results. PES-I is a reproducing kernel Hilbert space (RKHS) representation of multireference configurational interaction (MRCI) energies, while PES-II is a many-body permutation invariant polynomial (MB-PIP) fit of complete active space second order perturbation (CASPT2) points. The theoretical investigations were both consistent with the experimental suggestion of two dynamical pathways to produce NO + O, where reactive collisions may proceed on the doublet (12A') and quartet (14A') surfaces. When analyzed with this theoretical insight, the experimental c.m. translational energy and angular distributions were in reasonably good agreement with those predicted by the QCT calculations, although minor differences were observed which are discussed. Theoretical translational energy and angular distributions for the nonreactive N + O2 products matched the experimental translational energy and angular distributions almost quantitatively. Finally, relative yields for the nonreactive and reactive scattering channels were determined from the experiment and from both theoretical methods, and all results are in reasonable agreement.
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Affiliation(s)
- Adriana Caracciolo
- Ann and H.J. Smead Department of Aerospace Engineering Sciences, University of Colorado, Boulder, Colorado 80303, United States
| | | | - Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Markus Meuwly
- Department of Chemistry, University of Basel, CH-4056 Basel, Switzerland
| | - Timothy K Minton
- Ann and H.J. Smead Department of Aerospace Engineering Sciences, University of Colorado, Boulder, Colorado 80303, United States
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15
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Han Z, Xue X, Wang J, Lu D. Tuberous sclerosis complex associated lymphangioleiomyomatosis. QJM 2023; 116:873-874. [PMID: 37286375 PMCID: PMC10593382 DOI: 10.1093/qjmed/hcad125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Indexed: 06/09/2023] Open
Affiliation(s)
- Z Han
- Department of Gerontology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - X Xue
- Department of Gerontology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - J Wang
- Department of Gerontology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - D Lu
- Department of Respiratory, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Shandong Institute of Respiratory Diseases, Shandong Institute of Anesthesia and Respiratory Critical Medicine, Jinan, China
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16
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Lu D, González M, Guo H. Formation of N( 2D) from Hyperthermal Collisions between O( 3P) and NO(X 2Π). J Phys Chem A 2023; 127:8615-8622. [PMID: 37815918 DOI: 10.1021/acs.jpca.3c05680] [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: 10/12/2023]
Abstract
Hyperthermal collisions between O(3P) and NO(X2Π) could lead to the formation of the first electronically excited atomic nitrogen (N(2D)), which plays a key role in plasma formation in shock-heated air. This process is facilitated mainly by four doublet states, and to a much lesser extent by two quartet states. In this work, we report quasi-classical trajectory studies of this reactive process using the four analytical adiabatic potential energy surfaces for the doublet states developed previously from fitting high-level ab initio data. The reactions were found to be strongly enhanced by vibrational excitation of the NO reactant, consistent with the existence of potential energy barriers in the exit channel. Despite the large endothermicity of the reaction, the rate coefficient is significant at high temperatures, suggesting a possible role of this reaction in the hyperthermal kinetics in the shock layer of a hypersonic (re)entry vehicle.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Miguel González
- Departament de Ciència de Materials i Química Física and IQTC, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
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17
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Liu Y, Wang D, He Z, Qian D, Liu Y, Yang C, Lu D, Zhang H. [Molecular detection and phylogenetic analysis of Wolbachia infection in common mosquito species in Henan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2023; 35:389-393. [PMID: 37926475 DOI: 10.16250/j.32.1374.2023033] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
OBJECTIVE To investigate the infection and genotypes of Wolbachia in common mosquito species in Henan Province, so as to provide insights into management of mosquito-borne diseases. METHODS Aedes, Culex and Anopheles samples were collected from cowsheds, sheepfolds and human houses in Puyang, Nanyang City and Xuchang cities of Henan Province from July to September, 2022, and the infection of Wolbachia was detected. The 16S rDNA and wsp genes of Wolbachia were amplified and sequenced. Sequence alignment was performed using the BLAST software, and the obtained 16S rDNA gene sequence was compared with the sequence of the 16S rDNA gene in GenBank database. In addition, the phylogenetic trees were created based on 16S rDNA and wsp gene sequences using the software MEGA 11.0. RESULTS A total 506 female adult mosquitoes were collected from three sampling sites in Nanyang, Xuchang City and Puyang cities from July to September, 2022. The overall detection of Wolbachia was 45.1% (228/506) in mosquitoes, with a higher detection rate in A. albopictus than in Cx. pipiens pallens [97.9% (143/146) vs. 50.6% (85/168); χ2 = 88.064, P < 0.01]. The detection of Wolbachia in Cx. pipiens pallens was higher in Xuchang City (96.8%, 62/64) than in Nanyang (15.6%, 7/45) and Puyang cities (27.1%, 16/59) (χ2 = 89.950, P < 0.01). The homologies of obtained Wolbachia 16S rDNA and wsp gene sequences were 95.3% to 100.0% and 81.7% to 99.8%. Phylogenetic analysis based on wsp gene sequences showed Wolbachia supergroups A and B in mosquito samples, with wAlbA and wMors strains in supergroup A and wPip and wAlbB strains in supergroup B. Wolbachia strain wAlbB infection was detected in A. albopictus in Puyang and Nanyang Cities, while Wolbachia strain wPip infection was identified in A. albopictus in Xuchang City. Wolbachia strain wAlbA infection was detected in Cx. pipiens pallens sampled from three cities, and one Cx. pipiens pallens was found to be infected with Wolbachia strain wMors in Nanyang City. CONCLUSIONS Wolbachia infection is commonly prevalent in Ae. albopictus and Cx. pipiens pallens from Henan Province, and Wolbachia strains wAlbB and wAlbA are predominant in Ae. albopictus, while wPip strain is predominant in Cx. pipiens pallens. This is the first report to present Wolbachia wMors strain infection in Cx. pipiens pallens in Henan Province.
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Affiliation(s)
- Y Liu
- School of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - D Wang
- Henan Provincial Center for Disease Control and Prevention, China
| | - Z He
- Henan Provincial Center for Disease Control and Prevention, China
| | - D Qian
- Henan Provincial Center for Disease Control and Prevention, China
| | - Y Liu
- Henan Provincial Center for Disease Control and Prevention, China
| | - C Yang
- Henan Provincial Center for Disease Control and Prevention, China
| | - D Lu
- Henan Provincial Center for Disease Control and Prevention, China
| | - H Zhang
- School of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, China
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18
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Xiong H, Lu D, Li Z, Wu J, Ning X, Lin W, Bai Z, Zheng C, Sun Y, Chi W, Zhang L, Xu X. The DELLA-ABI4-HY5 module integrates light and gibberellin signals to regulate hypocotyl elongation. Plant Commun 2023; 4:100597. [PMID: 37002603 PMCID: PMC10504559 DOI: 10.1016/j.xplc.2023.100597] [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: 09/28/2022] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 05/29/2023]
Abstract
Plant growth is coordinately controlled by various environmental and hormonal signals, of which light and gibberellin (GA) signals are two critical factors with opposite effects on hypocotyl elongation. Although interactions between the light and GA signaling pathways have been studied extensively, the detailed regulatory mechanism of their direct crosstalk in hypocotyl elongation remains to be fully clarified. Previously, we reported that ABA INSENSITIVE 4 (ABI4) controls hypocotyl elongation through its regulation of cell-elongation-related genes, but whether it is also involved in GA signaling to promote hypocotyl elongation is unknown. In this study, we show that promotion of hypocotyl elongation by GA is dependent on ABI4 activation. DELLAs interact directly with ABI4 and inhibit its DNA-binding activity. In turn, ABI4 combined with ELONGATED HYPOCOTYL 5 (HY5), a key positive factor in light signaling, feedback regulates the expression of the GA2ox GA catabolism genes and thus modulates GA levels. Taken together, our results suggest that the DELLA-ABI4-HY5 module may serve as a molecular link that integrates GA and light signals to control hypocotyl elongation.
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Affiliation(s)
- Haibo Xiong
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing 100093, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China
| | - Zhiyuan Li
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing 100093, China
| | - Jianghao Wu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China
| | - Xin Ning
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing 100093, China
| | - Weijun Lin
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China; Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing 100093, China
| | - Zechen Bai
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Canhui Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China
| | - Yang Sun
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China
| | - Wei Chi
- Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, Beijing 100093, China
| | - Lixin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China
| | - Xiumei Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Jinming Avenue, Kaifeng 475004, China; Sanya Institute of Henan University, Sanya 572025, China.
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Zhang G, Lu D, Ding Y, Guan L, Han S, Guo H, Gao H. Imaging of the charge-transfer reaction of spin-orbit state-selected Ar +( 2P 3/2) with N 2 reveals vibrational-state-specific mechanisms. Nat Chem 2023; 15:1255-1261. [PMID: 37474867 DOI: 10.1038/s41557-023-01278-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 06/21/2023] [Indexed: 07/22/2023]
Abstract
Charge-transfer reactions are ubiquitous and play important roles in various gaseous environments, but, despite a long history of extensive research, our understanding of their dynamics at the quantum state-to-state level is still lacking. Here we report quantum-state-resolved experiments for the paradigmatic charge-transfer reaction Ar+ + N2 → Ar + N2+ using a three-dimensional velocity-map imaging crossed-beam apparatus with the Ar+ beam prepared exclusively in the spin-orbit state 2P3/2. High-resolution scattering images show strong dependence of rotational and angular distributions on the vibrational quantum number of the N2+ product. Trajectory surface-hopping calculations, which semi-quantitatively reproduce the experimental observations, support the existence of two distinct charge-transfer mechanisms. One of these, in the dominant N2+(v' = 1) channel, is the well-known long-distance harpooning mechanism. However, the highly rotationally excited products in the forward direction are attributed to a hard-collision glory scattering mechanism, which occurs on account of the strong attraction between the collisional partners counterbalanced by the short-range repulsive interaction.
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Affiliation(s)
- Guodong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM, USA
| | - Yufan Ding
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lichang Guan
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Shanyu Han
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM, USA
- International Center for Isotope Effects Research, Nanjing University, Nanjing, China
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM, USA.
| | - Hong Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.
- University of Chinese Academy of Sciences, Beijing, China.
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Song Y, Ren Y, Xue Y, Lu D, Yan T, He J. Putrescine (1,4-Diaminobutane) enhances antifungal activity in postharvest mango fruit against Colletotrichum gloeosporioides through direct fungicidal and induced resistance mechanisms. Pestic Biochem Physiol 2023; 195:105581. [PMID: 37666606 DOI: 10.1016/j.pestbp.2023.105581] [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] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 09/06/2023]
Abstract
Anthracnose decay caused by Colletotrichum gloeosporioides greatly shortens the shelf life and commercial quality of mango fruit. Putrescine (1,4-Diaminobutane) is involved in modulating plant defense to various environmental stresses. In this research, in vivo and in vitro tests were used to explore the antifungal activity and the underlying mechanism of putrescine against C. gloeosporioides in mango fruit after harvested. In vivo tests suggested that putrescine markedly delayed the occurrence of disease and limited the spots expansion on inoculated mango fruit. Further analysis exhibited that putrescine treatment enhanced disease resistance, along with enhanced activities of chitinase (CHI), β-1,3-glucanase (GLU), phenylalanine ammonia-lyase (PAL), cinnamate-4-hydroxylase (C4H), 4-coumarate coenzyme A ligase (4CL), polyphenol oxidase (PPO) and the accumulation of lignin, flavonoid, phenolics, and anthocyanin in infected mango fruit. In addition, in vitro tests showed that putrescine exerted strongly antifungal activity against C. gloeosporioides. Putrescine induced the production of reactive oxygen species (ROS) and severe lipid peroxidation damage in C. gloeosporioides mycelia, resulting in the leakage of soluble protein, soluble sugar, nucleic acids, K+ and Ca2+ of C. gloeosporioides mycelia. The mycelium treated with putrescine showed severe deformity and shrinkage, and even cracking. Taken together, putrescine could effectively reduce the incidence rate and severity of anthracnose disease possibly through direct fungicidal effect and indirect induced resistance mechanism, thus showing great potential to be applied to disease control.
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Affiliation(s)
- Yaping Song
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Yanfang Ren
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China.
| | - Yuhao Xue
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Dandan Lu
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Tengyu Yan
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China
| | - Junyu He
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, People's Republic of China.
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21
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Id-Lahoucine S, Casellas J, Lu D, Sargolzaei M, Miller S, Cánovas A. Distortion of Mendelian segregation across the Angus cattle genome uncovering regions affecting reproduction. Sci Rep 2023; 13:13393. [PMID: 37591956 PMCID: PMC10435455 DOI: 10.1038/s41598-023-37710-z] [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: 12/11/2022] [Accepted: 06/26/2023] [Indexed: 08/19/2023] Open
Abstract
Nowadays, the availability of genotyped trios (sire-dam-offspring) in the livestock industry enables the implementation of the transmission ratio distortion (TRD) approach to discover deleterious alleles in the genome. Various biological mechanisms at different stages of the reproductive cycle such as gametogenesis, embryo development and postnatal viability can induce signals of TRD (i.e., deviation from Mendelian inheritance expectations). In this study, TRD was evaluated using both SNP-by-SNP and sliding windows of 2-, 4-, 7-, 10- and 20-SNP across 92,942 autosomal SNPs for 258,140 genotyped Angus cattle including 7,486 sires, 72,688 dams and 205,966 offspring. Transmission ratio distortion was characterized using allelic (specific- and unspecific-parent TRD) and genotypic parameterizations (additive- and dominance-TRD). Across the Angus autosomal chromosomes, 851 regions were clearly found with decisive evidence for TRD. Among these findings, 19 haplotypes with recessive patterns (potential lethality for homozygote individuals) and 52 regions with allelic patterns exhibiting complete or quasi-complete absence for homozygous individuals in addition to under-representation (potentially reduced viability) of the carrier (heterozygous) offspring were found. In addition, 64 (12) and 20 (4) regions showed significant influence on the trait heifer pregnancy at p-value < 0.05 (after chromosome-wise false discovery rate) and 0.01, respectively, reducing the pregnancy rate up to 15%, thus, supporting the biological importance of TRD phenomenon in reproduction.
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Affiliation(s)
- S Id-Lahoucine
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - J Casellas
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, 08193, Barcelona, Spain
| | - D Lu
- Angus Genetics Inc., St. Joseph, MO, 64506, USA
| | - M Sargolzaei
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada
- Department of Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada
- Select Sires, Inc., Plain City, OH, 43064, USA
| | - S Miller
- AGBU, a joint venture of NSW Department of Primary Industries and University of New England, Armidale, 2351, Australia
| | - A Cánovas
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, ON, N1G 2W1, Canada.
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22
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Cao X, Islam MN, Lu D, Han C, Wang L, Tan M, Chen Y, Xin N. Effects of barley seedling powder on rheological properties of dough and quality of steamed bread. FOOD SCI TECHNOL INT 2023:10820132231188988. [PMID: 37464807 DOI: 10.1177/10820132231188988] [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] [Indexed: 07/20/2023]
Abstract
In order to find the optimal share of barley seedling powder (BSP) to improve the rheological properties of wheat dough and physico-chemical properties of steamed bread (SB), BSP was added with wheat flour at various proportions (2-10%). Results showed that with the increasing amount of BSP additive, the farinograph index (86.33-123), dough stability (9.37-12.63 min), and dough development time (6.23-7.63 min) in blend flour increased. Similarly, with the increasing BSP, SB became darker and more greenish, and the total flavonoid content increased. The content of chlorophyll-b, and total chlorophyll demonstrated a faster increase than that of chlorophyll-a. The hardness and chewability of SB improved as well whereas the springiness increased first and then decreased. The best springiness and gumminess of SB were found with 2% and 8% BSP additives respectively. 2%, 4%, and 6% addition of BSP resulted in a slight fluctuation in the bound water quantity than 8% and 10% BSP additive. No new compound formation was confirmed by Infrared analysis and there was only a heat and mass transfer process. Results from this study indicated that SB with improved quality attributes can be prepared from wheat flour fortified with BSP at 2-4%.
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Affiliation(s)
- Xiaohuang Cao
- School of Chemistry and Food Science, Yulin Normal University, Yulin, China
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Yulin, China
| | - Md Nahidul Islam
- Department of Agro-Processing, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
- Institute of Food Safety and Processing, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Dandan Lu
- School of Chemistry and Food Science, Yulin Normal University, Yulin, China
| | - Congying Han
- School of Chemistry and Food Science, Yulin Normal University, Yulin, China
| | - Lei Wang
- School of Chemistry and Food Science, Yulin Normal University, Yulin, China
| | - Mingxiong Tan
- School of Chemistry and Food Science, Yulin Normal University, Yulin, China
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Yulin, China
| | - Yuan Chen
- School of Chemistry and Food Science, Yulin Normal University, Yulin, China
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Yulin, China
| | - Ning Xin
- School of Chemistry and Food Science, Yulin Normal University, Yulin, China
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23
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Yin R, Zhou S, Lu D, Diao S, Shi W, Gong H, Dai X. Evolution of dissolved organic nitrogen (DON) during sludge reject water treatment revealed by FTICR-MS. Sci Total Environ 2023:164944. [PMID: 37336412 DOI: 10.1016/j.scitotenv.2023.164944] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/14/2023] [Accepted: 06/14/2023] [Indexed: 06/21/2023]
Abstract
This study evaluated the ability to remove dissolved organic matter (DOM), particularly dissolved organic nitrogen (DON), at a molecular level using Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) in a full-scale reject water treatment project comprising three steps of short-cut nitrification and denitrification, two-stage AO, and ultrafiltration membrane system. The results indicated that short-cut nitrification and denitrification were effective in reducing the DON concentration from an average of about 180 mg/L to 43 mg/L. The average molecular weight of DOM showed a decreasing trend from 238 Da to 160 Da. The percentage of nitrogen-containing organic compounds (CHON-DOM), which is the primary component of reject water DOM, increased from 65.79 % to 72.35 %, while the percentage of CHO-DOM decreased from 20.67 % to 15.24 %. The percentage of CHOS-DOM remained stable at 12.21 %-13.54 %. The percentage of protein-DOM decreased from 50.32 % to 18.40 %, while lignin-DOM increased from 36.16 % to 55.88 % and carbohydrate-DOM increased from 2.68 % to 9.74 %. The short-cut nitrification and denitrification and ultrafiltration membrane system both generated more unsaturated, highly aromatic DOM. This study provides insights into the effects of different wastewater treatment processes on the evolution of DOM/DON, which can be useful for effective DON control.
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Affiliation(s)
- Ruihong Yin
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Shuyan Zhou
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Dandan Lu
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Siyuan Diao
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Wenjing Shi
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Hui Gong
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China; Key Laboratory of Urban Water Supply, Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources, Tongji University, Shanghai 200092, China.
| | - Xiaohu Dai
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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24
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Lu D, Gong H, Diao S, Shi W, Yin R, Dai X. Enhanced sludge settlement of two stage PN/Anammox for reject water treatment with respective diatomite addition. Sci Total Environ 2023; 877:162784. [PMID: 36906019 DOI: 10.1016/j.scitotenv.2023.162784] [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: 12/21/2022] [Revised: 02/23/2023] [Accepted: 03/06/2023] [Indexed: 05/06/2023]
Abstract
The present study investigated the potential of diatomite addition in enhancing sludge settlement of two-stage PN/Anammox for real reject water treatment, with a focus on sludge settling velocity, nitrogen removal capacity, sludge morphological features, and microbial community changes. The study found that diatomite addition significantly improved the sludge settleability of the two-stage PN/A process, resulting in a decrease in sludge volume index (SVI) from 70 to 80 mL/g to about 20-30 mL/g for both PN and Anammox sludge, although the sludge-diatomite interaction differed between the two types of sludge. In the PN sludge, diatomite acted as a carrier, while in the Anammox sludge, it acted as micro-nuclei. The addition of diatomite also increased the biomass amounts in the PN reactor, with a 5-29 % improvement attributed to its role as a biofilm carrier. The effects of diatomite addition on sludge settleability were more prominent at high mixed liquor suspended solids (MLSS), where sludge characteristics were deteriorated. Furthermore, the settling rate of the experimental group consistently exceeded that of the blank group after diatomite addition, with a significant decrease in SV. The relative abundance of Anammox bacteria was improved, and sludge particle size decreased in the diatomite-added Anammox reactor. Diatomite was effectively retained in both reactors, with less loss observed for Anammox than PN due to its more tightly wrapped structure, resulting in a stronger sludge-diatomite interaction. Overall, the results of this study suggest that diatomite addition has potential in enhancing the settling properties and performance of two-stage PN/Anammox for real reject water treatment.
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Affiliation(s)
- Dandan Lu
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Hui Gong
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China.
| | - Siyuan Diao
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Wenjing Shi
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Ruihong Yin
- School of Environmental and Chemical Engineering, Shanghai Electric Power University, Shanghai 201306, China; College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Xiaohu Dai
- College of Environmental Science and Engineering, Institute of Carbon Neutrality, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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25
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Lu D, Galvão BRL, Varandas AJC, Guo H. Quantum and semiclassical studies of nonadiabatic electronic transitions between N( 4S) and N( 2D) by collisions with N 2. Phys Chem Chem Phys 2023; 25:15656-15665. [PMID: 37278325 DOI: 10.1039/d3cp01429k] [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: 06/07/2023]
Abstract
The dynamics and kinetics of spin-forbidden transitions between N(2D) and N(4S) via collisions with N2 molecules are investigated using a quantum wave packet (WP) method and the semi-classical coherent switches with decay of mixing (CSDM) method. These electronic transition processes are competing with exchange reaction channels on both the doublet and quartet potential energy surfaces. The WP and CSDM quenching rate coefficients are found in reasonable agreement with each other, and both reproduce the previous theoretical results. For the excitation process, the agreement between the two approaches is dependent on the treatment of the zero-point energy (ZPE) in the product, because the high endoergicity of this process leads to severe violation of the vibrational ZPE. The Gaussian-binning (GB) method is found to improve the agreement with the quantum result. The excitation rate coefficients are found to be two orders of magnitude smaller than that of the adiabatic exchange reaction, underscoring the inefficient intersystem crossing due to the weak spin-orbit coupling between the two spin manifolds of the N3 system.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, 87131, New Mexico, USA.
| | - Breno R L Galvão
- Centro Federal de Educação Tecnológica de Minas Gerais, CEFET-MG, Av. Amazonas 5253, (30421-169), Belo Horizonte, Minas Gerais, Brazil
| | - Antonio J C Varandas
- Departamento de Física, Universidade Federal do Espírito Santo, Vitória, Brazil
- Coimbra Chemistry Centre and Chemistry Department, University of Coimbra, Coimbra, Portugal
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, 87131, New Mexico, USA.
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26
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Zhang L, Ge X, Jin H, Lu D, Chen S, Zhang Y, Wang X, Xu H, Ao W, Zhang Y. Discovery, optimization and biological evaluation of novel HBsAg production inhibitors. Eur J Med Chem 2023; 256:115387. [PMID: 37187088 DOI: 10.1016/j.ejmech.2023.115387] [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: 02/12/2023] [Revised: 04/14/2023] [Accepted: 04/16/2023] [Indexed: 05/17/2023]
Abstract
Hepatitis B virus (HBV) infection is a major global health problem. HBsAg inhibitors are expected to reduce the production of HBsAg via inhibiting host proteins PAPD5 & PAPD7 and finally achieve the ideal goal of "functional cure". In this work, a series of tetrahydropyridine (THP) derivatives with a bridged ring were synthesized and evaluated for their inhibiting HBsAg production and HBV DNA activity. Among them, compound 17i was identified as potent HBsAg production inhibitor with excellent in vitro anti-HBV potency (HBV DNA EC50 = 0.018 μM, HBsAg EC50 = 0.044 μM) and low toxicity (CC50 > 100 μM). Moreover, 17i exhibited favorable in vitro/in vivo DMPK properties in mice. 17i could also significantly reduce serum HBsAg and HBV DNA levels (1.08 and 1.04 log units, respectively) in HBV transgenic mice.
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Affiliation(s)
- Li Zhang
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Xingfeng Ge
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Hui Jin
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Dandan Lu
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Shuo Chen
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Yang Zhang
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Xiaojin Wang
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Hongjiang Xu
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China
| | - Wangwei Ao
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China.
| | - Yinsheng Zhang
- Pharmaceutical R&D Institute, Chia Tai Tianqing Pharmaceutical Group Co., Ltd, 1099 Fuying Road, Jiangning District, Nanjing, Jiangsu Province, China.
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27
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Lu D, Guo H. Quantum and Semiclassical Dynamics of Nonadiabatic Electronic Excitation of C( 3P) to C 1D) by Hyperthermal Collisions with N 2. J Phys Chem A 2023; 127:3190-3199. [PMID: 36989004 DOI: 10.1021/acs.jpca.3c00893] [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: 03/30/2023]
Abstract
The dynamics and kinetics of nonadiabatic excitation of C(3P) to C(1D) induced by hyperthermal collisions with N2 molecules are investigated using a quantum mechanical and two semiclassical nonadiabatic methods. The full-dimensional interaction potential energy surfaces and spin-orbit coupling, which facilitates the spin-forbidden process, are represented by a recently constructed diabatic potential energy matrix. The multistate quantum dynamics for selected partial waves found small transition probabilities due to the weak spin-orbit coupling. The spin-flip transition is the most favored near the threshold due to effective curve crossing. Strong oscillations are also found in the probabilities, which are attributable to resonances supported by the deep well in the singlet-state potential. Vibrational state-specified rate coefficients are reported from J-shifted quantum dynamics calculations, and they follow the Arrhenius form. Vibrational excitation in the N2 collision partner is found to increase the excitation rate at low temperatures, but the trend is reversed at high temperatures. The two semiclassical methods qualitatively reproduce the quantum rate coefficients.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
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28
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Lu D, Urzúa-Leiva R, Denis-Alpizar O, Guo H. Hyperthermal Dynamics and Kinetics of the C( 3P) + N 2(X 1Σg+) → CN(X 2Σ+) + N( 4S) Reaction. J Phys Chem A 2023; 127:2839-2845. [PMID: 36944165 DOI: 10.1021/acs.jpca.3c00210] [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: 03/23/2023]
Abstract
The hyperthermal dynamics and kinetics of the title reaction, which plays an important role in hypersonic chemistry for atmospheric entry vehicles, are investigated using quasi-classical trajectory methods on a recently developed ground electronic state potential energy surface. The dynamics calculations indicated that the reaction follows a complex-forming mechanism, despite its large endoergicity. The calculated differential cross section is forward-backward symmetric, consistent with a long-lived reaction intermediate supported by the NCN potential well. The lifetime of the reaction complex is sufficiently long that the vibrational distribution of the CN product can be predicted by the phase space theory. The calculated vibrational state specific and thermal rate coefficients follow the Arrhenius behavior, and the agreement with existing low-temperature experimental thermal rate coefficients is satisfactory. Extrapolations to high temperatures relevant to hypersonic conditions are provided.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Rodrigo Urzúa-Leiva
- Facultad de Ingeniería, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Providencia, 7500912 Santiago, Chile
| | - Otoniel Denis-Alpizar
- Facultad de Ingeniería, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Providencia, 7500912 Santiago, Chile
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
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29
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Keshavarz P, Yazdanpanah F, Holmes A, Cen N, Baradaran M, Sung K, Lu D, Raman S. Abstract No. 249 Prediction of Recurrence Following HCC Resection Using Artificial Intelligence: A Systematic Review of 23,693 Patients. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
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30
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Lee J, Boas E, Cappelletti M, Lu D, Raman S, Lee E, Chiang J. Abstract No. 158 Characterizing the Anti-Tumor Immune Response to IRE vs Thermal Ablation Therapy in an Immunocompetent Oncopig Model of Hepatocellular Carcinoma. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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31
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Keshavarz P, Mizandari M, Gotsiridze E, Azrumelashvili T, Habib N, McWilliams J, Lu D, Raman S. Abstract No. 84 Endoportal RFA Followed by Stent Implantation in Hepatocellular Carcinoma with Portal Vein Thrombosis: Feasibility and Clinical Outcomes. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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32
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Tran T, Niu X, Wu J, Lu D, Leon RL, Minassian B, Mirpuri J. Maternal high fat diet exposure results in differential inflammatory gene expression, diminished hippocampal neurons and reduced sensitivity to stimuli in offspring, dependent on the maternal microbiome. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00517-7] [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: 01/28/2023]
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Peng M, Liu Y, Jia X, Wu Y, Zou X, Ke M, Cai K, Zhang L, Lu D, Xu A. Dietary Total Antioxidant Capacity and Cognitive Function in Older Adults in the United States: The NHANES 2011-2014. J Nutr Health Aging 2023; 27:479-486. [PMID: 37357333 DOI: 10.1007/s12603-023-1934-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/13/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVES Oxidative stress level takes part in the development of cognitive decline. However, the association between total antioxidant capacity (TAC) from diet and cognitive function is controversial. The aim of this study was to investigate the relationship between TAC and the cognitive function of older adults in the U.S. DESIGN A cross-sectional study. SETTING National Health and Nutrition Examination Surveys database. PARTICIPANTS 2712 older adults aged over 60 years. MEASUREMENTS TAC was calculated from 8 antioxidative vitamins based on the reference values for vitamin C equivalent antioxidant capacity obtained from individuals' 24 h dietary recall. Four memory-related assessments were employed [Immediate Recall test (IRT), Delayed Recall test (DRT), Animal Fluency test (AFT), and Digit Symbol Substitution test (DSST)]. RESULTS Among the 2712 participants, the median age was 68 years, and 50.4% were women. Participants in the group with higher TAC levels had relatively higher IRT, AFT and DSST scores (P=0.025, P=0.008, P<0.001, respectively). In adjusted weighted linear regression, log-transformed TAC was positively associated with AFT (β=1.10, 95%CI: 0.51, 1.70) and DSST (β=2.81, 95%CI: 1.16, 4.45). Compared with the first quartile, the participants in the second (Q2 vs. Q1, OR=0.66, 95%CI: 0.43,1.02) and fourth quartile (Q4 vs. Q1, OR=0.47, 95%CI:0.28, 0.78) of log-transformed TAC showed a decreased risk of impaired cognitive function (ICF) after adjusting for confounders. The dose-response analysis indicated a gradual descent in the risk of ICF as TAC increases. Diabetes mellitus (DM) mediated part of the effect of TAC on ICF. The relationship between TAC and ICF was more pronounced in subjects with DM (Q4 vs Q1, OR=0.36, 95%CI:0.17, 0.74). CONCLUSION Our findings support that higher dietary antioxidant potential was related to a decreased risk of cognitive dysfunction, particularly in the subjects with DM who may have oxidative injury. DM was one of the factors mediating the effect of TAC on ICF.
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Affiliation(s)
- M Peng
- Anding Xu, Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, No.613, Huangpu Road West, Guangzhou, 510630, Guangdong Province, China, ; Dan Lu, Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, No.613, Huangpu Road West, Guangzhou, 510630, Guangdong Province, China,
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34
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Tong JL, Zhu GH, Sun DW, Lu D, Cheng YF, Chen H, Pei LJ, Yin X, Zhou WD, Zhang W, Ling D, Xie X, Tan X, Zhu YJ, Wu XM, Hu CY, Li H, Wang Y, Fan JY, Jia XM, Zhu TY, Chen LM, Guo HY, Zhao SJ, Wang S, Feng SW, He XY, Chi YG, Sun XL, Lang JH, Sui L, Zhu L. [Consensus of Chinese experts on hysteroscopy day surgery center set-up and management process]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:891-899. [PMID: 36562222 DOI: 10.3760/cma.j.cn112141-20220925-00594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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35
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Lu D, Lin W, Su F, Wu K, Wen TB, Zhang HJ. Well-Defined Rhodium Diphenylphosphine Oxide Complexes Relevant to Rh(III)-Catalyzed Aryl C–H Phosphorylation. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00478] [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: 11/24/2022]
Affiliation(s)
- Dandan Lu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Weidong Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Feng Su
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Kongchuan Wu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Ting-Bin Wen
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
| | - Hui-Jun Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People’s Republic of China
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Lu D, Yao J, Yuan G, Gao Y, Zhang J, Guo X. Immune checkpoint inhibitor-associated new-onset primary adrenal insufficiency: a retrospective analysis using the FAERS. J Endocrinol Invest 2022; 45:2131-2137. [PMID: 35870109 PMCID: PMC9525402 DOI: 10.1007/s40618-022-01845-z] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/18/2022] [Indexed: 12/20/2022]
Abstract
BACKGROUND Our study aimed to investigate the prevalence and demographic characteristics of immune checkpoint inhibitor-associated primary adrenal insufficiency (ICI-PAI) and to explore the risk factors of its clinical outcome using data from the US FDA Adverse Event Reporting System (FAERS). METHODS This was a retrospective study. All cases of new-onset or newly diagnosed primary adrenal insufficiency associated with FDA-approved ICIs from 1 January 2007 to 31 December 2020 were identified and collected using FAERS. Data on age, sex category, body weight of the participating individuals, the reporting year and the prognosis of cases, and other accompanying endocrinopathies related to ICIs, were analysed. RESULTS The incidence of ICI-PAI was 1.03% (1180/114121). Of the 1180 cases of PAI, 46 were "confirmed PAI", and 1134 were "suspected PAI". Combination therapy with anti-CTLA-4 and anti-PD-1 was related to a higher risk of PAI compared with the anti-PD-1-only group (χ2 = 92.88, p < 0.001). Male and elderly individuals showed a higher risk of ICI-PAI (male vs. female, 1.17% vs. 0.94%, χ2 = 12.55, p < 0.001; age < 65 vs. ≥ 65, 1.20 vs. 1.41%, χ2 = 6.89, p = 0.009). The co-occurrence rate of endocrinopathies other than PAI was 24.3%, which showed a higher trend in patients on nivolumab-ipilimumab treatment than in those on PD-1 inhibitors (χ2 = 3.227, p = 0.072). Body weight was negatively associated with the risk of death in the study population [p = 0.033 for the regression model; B = - 0.017, OR 0.984, 95% CI (0.969-0.998), p = 0.029]. CONCLUSION ICI-associated PAI is a rare but important irAE. Male and elderly patients have a higher risk of ICI-PAI. Awareness among clinicians is critical when patients with a lower body weight develop PAI, which indicates a higher risk of a poor clinical outcome.
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Affiliation(s)
- D. Lu
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - J. Yao
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - G. Yuan
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - Y. Gao
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - J. Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - X. Guo
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
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Shi J, Tong R, Zhou M, Gao Y, Zhao Y, Chen Y, Liu W, Li G, Lu D, Meng G, Hu L, Yuan A, Lu X, Pu J. Circadian nuclear receptor Rev-erbalpha is expressed by platelets and potentiates platelet activation and thrombus formation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.3035] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Adverse cardiovascular events have day/night patterns with peaks in the morning, potentially related to endogenous circadian clock control of platelet activation. Circadian nuclear receptor Rev-erbα is an essential and negative component of the circadian clock.
Purpose
We aim to investigate the expression profile and biological function of Rev-erbα in platelets.
Methods and results
Here we report the presence and functions of circadian nuclear receptor Rev-erbα in human and mouse platelets. Both human and mouse platelet Rev-erbα showed a circadian rhythm that positively correlated with platelet aggregation. Global Rev-erbα knockout and platelet-specific Rev-erbα knockout mice exhibited defective in hemostasis as assessed by prolonged tail-bleeding times. Rev-erbα deletion also reduced ferric chloride-induced carotid arterial occlusive thrombosis, prevented collagen/epinephrine-induced pulmonary thromboembolism, and protected against microvascular microthrombi obstruction and infarct expansion in an acute myocardial infarction model. In vitro thrombus formation assessed by CD41-labeled platelet fluorescence intensity was significantly reduced in Rev-erbα knockout mouse blood. Platelets from Rev-erbα knockout mice exhibited impaired agonist-induced aggregation responses, integrin αIIbβ3 activation and α-granule release. Consistently, pharmacological inhibition of Rev-erbα by specific antagonists decreased platelet activation markers in both mouse and human platelets. Mechanistically, mass spectrometry and co-immunoprecipitation analyses revealed that Rev-erbα potentiated platelet activation via oligophrenin-1-mediated RhoA/ERM (ezrin/radixin/moesin) pathway.
Conclusion
We provide the first evidence that circadian protein Rev-erbα is functionally expressed in platelets and potentiates platelet activation and thrombus formation. Rev-erbα may serve as a novel therapeutic target for managing thrombosis-based cardiovascular disease.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): This work was supported by grants from the National Science Fund for Distinguished Young Scholars (81625002), the National Natural Science Foundation of China (81930007).
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Affiliation(s)
- J Shi
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - R Tong
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - M Zhou
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Y Gao
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Y Zhao
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Y Chen
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - W Liu
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - G Li
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - D Lu
- Shanghai University of Traditional Medicine , Shanghai , China
| | - G Meng
- Shanghai University of Traditional Medicine , Shanghai , China
| | - L Hu
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - A Yuan
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - X Lu
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - J Pu
- Renji Hospital of Shanghai Jiao Tong University School of Medicine , Shanghai , China
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Yu B, Chen X, Lu D, Yan H, Wang P. Investigating the paradox of increasing obesity and declining heart disease mortality in the United States: Age-period-cohort model. Front Cardiovasc Med 2022; 9:948561. [PMID: 36061556 PMCID: PMC9429831 DOI: 10.3389/fcvm.2022.948561] [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: 05/20/2022] [Accepted: 07/20/2022] [Indexed: 11/23/2022] Open
Abstract
Background Obesity as a risk factor of heart disease (HD) is confirmed through observational, laboratory, and intervention studies. However, it cannot explain why HD declines, but obesity increases in the United States in recent decades. This study attempted to understand this paradox. Methods Annual data of national HD mortality (1999–2018) were derived from Wide-Ranging Online Data for Epidemiologic Research, biannual obesity data (1999–2016) from the National Health and Nutrition Examination Survey, and smoking data (1965–1990) were from the National Health Interview Survey. Age-period-cohort method was used to decompose HD mortality into age, period, and cohort effects, and to estimate age-cohort adjusted mortality rates. To explain the paradox, age-cohort adjusted rates were associated with obesity rates to verify the positive obesity-HD relationship, while smoking rates were associated with cohort effects to explain the current declines in HD mortality. Results During 1999–2018, the prevalence of obesity increased while the crude HD mortality rate declined for both sex and all races. After controlling for the curvilinear age effect and consistent declining cohort effect, the age-cohort adjusted HD mortality sustained stable in 1999–2007 and increased thereafter. The age-cohort adjusted rate in 1999–2018 (per 100,000) increased from 189.31 to 238.56 for males, 67.23 to 90.28 for females, 115.54 to 157.39 for White, 246.40 to 292.59 for Black, 79.79 to 101.40 for Hispanics, and 49.95 to 62.86 for Asian. The age-cohort adjusted HD mortality rates were positively associated with obesity rates (r = 0.68 for males, 0.91 for females, 0.89 for White, and 0.69 for Hispanic, p < 0.05), but not significant for Black and Asian. Further, during 1965–1990, the estimated cohort effect showed a decline in HD risk and was positively associated with smoking rates (r = 0.98 for both sex, 0.99 for White, and 0.98 for Black, p < 0.01). Conclusion Study findings reveal potential increase of HD risk and support the positive relationship between obesity and HD risk. Declines in HD mortality in the past two decades are primarily due to tobacco use reduction and this protective effect was entangled in the mortality rates as cohort effect.
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Affiliation(s)
- Bin Yu
- Department of Epidemiology and Health Statistics, School of Public Health, Wuhan University, Wuhan, China
- Population and Health Research Center, Wuhan University, Wuhan, China
- Department of Surgery, Duke University School of Medicine, Durham, NC, United States
- Deprtment of Epidemiology, University of Florida, Gainesville, FL, United States
- *Correspondence: Bin Yu,
| | - Xinguang Chen
- Global Health Institute, Xi’an Jiaotong University, Xi’an, China
| | - Dandan Lu
- Department of Epidemiology and Health Statistics, School of Public Health, Wuhan University, Wuhan, China
| | - Hong Yan
- Department of Epidemiology and Health Statistics, School of Public Health, Wuhan University, Wuhan, China
| | - Peigang Wang
- Population and Health Research Center, Wuhan University, Wuhan, China
- Department of Social Medicine and Health Management, School of Public Health, Wuhan University, Wuhan, China
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Lu D, Truhlar DG, Guo H. Reactive and Nonreactive Collisions between NO(X 2Π) and O( 3P) under Hyperthermal Conditions. J Phys Chem A 2022; 126:4277-4285. [PMID: 35749611 DOI: 10.1021/acs.jpca.2c02735] [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: 11/28/2022]
Abstract
Quasiclassical trajectory calculations are performed for hyperthermal collisions between NO(X2Π) and O(3P) on recently developed potential energy surfaces for the lowest doublet and quartet states of the NO2 system. Three product channels are investigated, and their branching fractions are in reasonably good agreement with the recent crossed molecular beam study at 84 kcal/mol of collision energy. The dominant inelastic channel has a strong forward scattering bias and a high translational energy distribution with limited internal excitation in the scattered NO. The exchange channel has significantly higher NO internal excitation and is also forward biased. The abstraction channel producing internally excited O2 has the smallest branching fraction and a broader angular distribution also with a forward peak. The angular and translational energy distributions in the three channels are consistent with experiment, but the agreement is not always quantitative. The sources of the differences are discussed. Finally, the impact of NO vibrational excitation on the reactive channels and the corresponding rate coefficients are reported.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Donald G Truhlar
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
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Lu D, Song JH, Ma ZJ, Zhang PY, Xu L, Wei C, Chen Y, Zhou S, Zhu JF, Li YL, Zhao JQ, Zhu MX, Zhao R, Wang H, Chen XJ, Zhao W, Su C. [Study on mechanisms of Th17/Treg imbalance in patients with cystic echinococcosis based on miRNA expression profiles]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022; 34:277-285. [PMID: 35896491 DOI: 10.16250/j.32.1374.2022052] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To investigate the serum microRNA (miRNA) expression and examine the impact of miRNA expression profiles on T helper type 17 (Th17)/regulatory T cells (Treg) imbalance among patients with cystic echinococcosis, so as to provide insights into the illustration of the mechanisms underlying chronic Echinococcus granulosus infections, and long-term pathogenesis. METHODS Total RNA was extracted from the sera of cystic echinococcosis patients and healthy controls, and subjected to high-throughput sequencing with the Illumina sequencing platform. Known miRNAs were annotated and new miRNAs were predicted using the miRBase database and the miRDeep2 tool, and differentially expressed miRNAs were identified. The target genes of differentially expressed miRNAs were predicted using the software miRanda and TargetScan, and the intersection was selected for Gene Ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Among the differentially expressed miRNAs with the 20 highest fold changes, miRNAs that targeted genes relating to key transcription factors RORC and FOXP3 that determine the production of Th17 and Treg cells or their important regulatory pathways (PI3K-Akt and mTOR pathways) were matched. RESULTS A total of 53 differentially expressed miRNAs were screened in sera of cystic echinococcosis patients and healthy controls, including 47 up-regulated miRNAs and 6 down-regulated miRNAs. GO enrichment analysis showed that these differentially expressed miRNA were involved DNA transcription and translation, cell components, cell morphology, neurodevelopment and metabolic decomposition, and KEGG pathway analysis showed that the differentially expressed miRNA were mainly involved in MAPK, PI3K-Akt and mTOR signaling pathways. Among the differentially expressed miRNAs with the 20 highest fold changes, there were 3 miRNAs that had a potential for target regulation of RORC, and 15 miRNAs that had a potential to target the PI3K-Akt and mTOR signaling pathways. CONCLUSIONS Significant changes are found in serum miRNA expression profiles among patients with E. granulosus infections, and differentially expressed miRNAs may lead to Th17/Treg imbalance through targeting the key transcription factors of Th17/Treg or PI3K-Akt and mTOR pathways, which facilitates the long-term parasitism of E. granulosus in hosts and causes a chronic disease.
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Affiliation(s)
- D Lu
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Co-first authors
| | - J H Song
- Medical Science and Technology Research Center, Ningxia Institute of Medical Science, Ningxia Medical University, Yinchuan, Ningxia 750004, China
- Co-first authors
| | - Z J Ma
- School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- Nanjing Yike Population Health Research Institute, China
| | - P Y Zhang
- Nanjing Yike Population Health Research Institute, China
| | - L Xu
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - C Wei
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Y Chen
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - S Zhou
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - J F Zhu
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Y L Li
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - J Q Zhao
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - M X Zhu
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - R Zhao
- Shizuishan Center for Disease Control and Prevention, Ningxia Hui Autonomous Region, China
| | - H Wang
- School of International Education, Nanjing Medical University, China
| | - X J Chen
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - W Zhao
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - C Su
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
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Ruan X, Du J, Lu D, Duan W, Jin F, Kong W, Wu Y, Dai Y, Yan S, Yin C, Li Y, Cheng J, Jia C, Liu X, Wu Q, Gu M, Ju R, Xu X, Yang Y, Jin J, Korell M, Montag M, Liebenthron J, Mueck AO. First live birth in China after cryopreserved ovarian tissue transplantation to prevent premature ovarian insufficiency. Climacteric 2022; 25:421-424. [PMID: 35504301 DOI: 10.1080/13697137.2022.2064215] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE This article reports the first live birth after cryopreserved ovarian tissue transplantation to prevent premature ovarian insufficiency in China. METHODS A patient with myelodysplastic syndrome received ovarian tissue cryopreservation before hematopoietic stem cell transplantation, and six ovarian cortex strips were thawed and transplanted into her peritoneal pocket 2 years later. RESULTS Pregnancy occurred spontaneously 27 months after grafting, and a healthy girl was born at 38 weeks gestation. Until now, the child has developed normally without any major diseases. CONCLUSIONS We report the first live birth resulting from ovarian tissue cryopreservation and transplantation in China.
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Affiliation(s)
- X Ruan
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - J Du
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - D Lu
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - W Duan
- Department of Gynecological Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - F Jin
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - W Kong
- Department of Gynecological Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Y Wu
- Department of Gynecological Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Y Dai
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - S Yan
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - C Yin
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Y Li
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - J Cheng
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - C Jia
- Department of Reproductive Medicine, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - X Liu
- Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Q Wu
- Department of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - M Gu
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - R Ju
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - X Xu
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Y Yang
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - J Jin
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - M Korell
- Department of Obstetrics and Gynecology, Johanna Etienne Hospital of Neuss, Neuss, Germany
| | - M Montag
- Ilabcomm GmbH, Augustin, Germany
| | - J Liebenthron
- UniCareD, University Cryobank for Assisted Reproductive Medicine and Fertility Protection at UniKiD, University Women's Hospital Düsseldorf, Düsseldorf, Germany
| | - A O Mueck
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China.,University Women's Hospital and Research Centre for Women's Health, Department of Women's Health, University of Tuebingen, Tuebingen, Germany
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Fu J, Zhang J, Yang L, Ding N, Yue L, Zhang X, Lu D, Jia X, Li C, Guo C, Yin Z, Jiang X, Zhao Y, Chen F, Zhou D. Precision Methylome and In Vivo Methylation Kinetics Characterization of Klebsiella pneumoniae. Genomics Proteomics Bioinformatics 2022; 20:418-434. [PMID: 34214662 PMCID: PMC9684165 DOI: 10.1016/j.gpb.2021.04.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/19/2021] [Accepted: 06/11/2021] [Indexed: 01/05/2023]
Abstract
Klebsiella pneumoniae (K. pneumoniae) is an important pathogen that can cause severe hospital- and community-acquired infections. To systematically investigate its methylation features, we determined the whole-genome sequences of 14 K. pneumoniae strains covering varying serotypes, multilocus sequence types, clonal groups, viscosity/virulence, and drug resistance. Their methylomes were further characterized using Pacific Biosciences single-molecule real-time and bisulfite technologies. We identified 15 methylation motifs [13 N6-methyladenine (6mA) and two 5-methylcytosine (5mC) motifs], among which eight were novel. Their corresponding DNA methyltransferases were also validated. Additionally, we analyzed the genomic distribution of GATC and CCWGG methylation motifs shared by all strains, and identified differential distribution patterns of some hemi-/un-methylated GATC motifs, which tend to be located within intergenic regions (IGRs). Specifically, we characterized the in vivo methylation kinetics at single-base resolution on a genome-wide scale by simulating the dynamic processes of replication-mediated passive demethylation and MTase-catalyzed re-methylation. The slow methylation of the GATC motifs in the replication origin (oriC) regions and IGRs implicates the epigenetic regulation of replication initiation and transcription. Our findings illustrate the first comprehensive dynamic methylome map of K. pneumoniae at single-base resolution, and provide a useful reference to better understand epigenetic regulation in this and other bacterial species.
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Affiliation(s)
- Jing Fu
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China,Department of Oncology, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou 450001, China,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ju Zhang
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China
| | - Li Yang
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nan Ding
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China
| | - Liya Yue
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China
| | - Xiangli Zhang
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dandan Lu
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinmiao Jia
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China,Department of Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Cuidan Li
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China
| | - Chongye Guo
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China
| | - Zhe Yin
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Xiaoyuan Jiang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Yongliang Zhao
- University of Chinese Academy of Sciences, Beijing 100049, China,CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China
| | - Fei Chen
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing 100101, China,University of Chinese Academy of Sciences, Beijing 100049, China,Corresponding authors.
| | - Dongsheng Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China,Corresponding authors.
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Lu D, Yang J, Zhang J, Guo X. Severe obesity, hypogonadotropic hypogonadism and a WDR11 gene mutation. QJM 2022; 115:160-161. [PMID: 34741523 DOI: 10.1093/qjmed/hcab279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 10/26/2021] [Indexed: 11/14/2022] Open
Affiliation(s)
- D Lu
- From the Department of Endocrinology, Peking University First Hospital, No.8, Xishiku Street, Beijing, China
| | - J Yang
- From the Department of Endocrinology, Peking University First Hospital, No.8, Xishiku Street, Beijing, China
| | - J Zhang
- From the Department of Endocrinology, Peking University First Hospital, No.8, Xishiku Street, Beijing, China
| | - X Guo
- From the Department of Endocrinology, Peking University First Hospital, No.8, Xishiku Street, Beijing, China
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44
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Lu D, Zhang ZH, Wang ZH. Heavy metal uptake by bryophytes and vascular plants in a manganese carbonate slag field, China. Plant Biol (Stuttg) 2022; 24:380-386. [PMID: 34879173 DOI: 10.1111/plb.13375] [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: 08/27/2021] [Accepted: 11/14/2021] [Indexed: 06/13/2023]
Abstract
Slag produced in mining and smelting of manganese carbonate ore potentially pollutes the environment and endangers the health of humans and other living organisms. This study investigates the uptake of six heavy metals, Cu, Pb, Mn, Zn, Cr and Cd, by bryophytes and vascular plants growing on manganese carbonate slag in the Houshangou Slag Field near Zunyi City, Guizhou Province, China. Determination of heavy metal uptake in bryophytes and vascular plants may identify species suitable as biomonitors for bioremediation of polluted lands. Eight bryophyte taxa were identified in the study area; among which, Bryum argenteum and Physcomitrium eurystomum were dominant; life forms of bryophytes were predominantly short turfs. Three monocotyledons, all Poaceae, and five dicotyledons were recorded in four families. The highest heavy metal uptake in bryophytes, Mn content by B. argenteum, was more than 25,000 mg·kg-1 . Furthermore, determination of heavy metal content in roots, leaves and fruits of six vascular plants demonstrated that each had a unique capacity for heavy metal accumulation: roots, leaves and fruits of similar plant species exhibited varying uptake capacity. Mn content in leaves was recorded in the order: B. davidii > A. tricolor > E. crus-galli > C. argentea > P. acinosa > C. album. In summary, B. argenteum, Echinochloa crus-galli and Phytolacca acinosa have strong enrichment capacity for heavy metals. These species could be used for comprehensive treatment of heavy metal pollution in electrolytic Mn slag fields, and for bioremediation of polluted areas associated with Mn mining and processing.
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Affiliation(s)
- D Lu
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, China
| | - Z H Zhang
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, China
| | - Z H Wang
- School of Life Sciences, Guizhou Normal University, Guiyang, China
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Zhu D, Xiong H, Wu J, Zheng C, Lu D, Zhang L, Xu X. Protein Targeting Into the Thylakoid Membrane Through Different Pathways. Front Physiol 2022; 12:802057. [PMID: 35095563 PMCID: PMC8790069 DOI: 10.3389/fphys.2021.802057] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/07/2021] [Indexed: 01/19/2023] Open
Abstract
In higher plants, chloroplasts are essential semi-autonomous organelles with complex compartments. As part of these sub-organellar compartments, the sheet-like thylakoid membranes contain abundant light-absorbing chlorophylls bound to the light-harvesting proteins and to some of the reaction center proteins. About half of the thylakoid membrane proteins are encoded by nuclear genes and synthesized in the cytosol as precursors before being imported into the chloroplast. After translocation across the chloroplast envelope by the Toc/Tic system, these proteins are subsequently inserted into or translocated across the thylakoid membranes through distinct pathways. The other half of thylakoid proteins are encoded by the chloroplast genome, synthesized in the stroma and integrated into the thylakoid through a cotranslational process. Much progress has been made in identification and functional characterization of new factors involved in protein targeting into the thylakoids, and new insights into this process have been gained. In this review, we introduce the distinct transport systems mediating the translocation of substrate proteins from chloroplast stroma to the thylakoid membrane, and present the recent advances in the identification of novel components mediating these pathways. Finally, we raise some unanswered questions involved in the targeting of chloroplast proteins into the thylakoid membrane, along with perspectives for future research.
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Affiliation(s)
- Dan Zhu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Haibo Xiong
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Jianghao Wu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Canhui Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Lixin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Xiumei Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
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Zheng C, Xu X, Zhang L, Lu D. Liquid-Liquid Phase Separation Phenomenon on Protein Sorting Within Chloroplasts. Front Physiol 2022; 12:801212. [PMID: 35002776 PMCID: PMC8740050 DOI: 10.3389/fphys.2021.801212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/09/2021] [Indexed: 12/13/2022] Open
Abstract
In higher plants, chloroplasts are vital organelles possessing highly complex compartmentalization. As most chloroplast-located proteins are encoded in the nucleus and synthesized in the cytosol, the correct sorting of these proteins to appropriate compartments is critical for the proper functions of chloroplasts as well as plant survival. Nuclear-encoded chloroplast proteins are imported into stroma and further sorted to distinct compartments via different pathways. The proteins predicted to be sorted to the thylakoid lumen by the chloroplast twin arginine transport (cpTAT) pathway are shown to be facilitated by STT1/2 driven liquid-liquid phase separation (LLPS). Liquid-liquid phase separation is a novel mechanism to facilitate the formation of membrane-less sub-cellular compartments and accelerate biochemical reactions temporally and spatially. In this review, we introduce the sorting mechanisms within chloroplasts, and briefly summarize the properties and significance of LLPS, with an emphasis on the novel function of LLPS in the sorting of cpTAT substrate proteins. We conclude with perspectives for the future research on chloroplast protein sorting and targeting mechanisms.
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Affiliation(s)
- Canhui Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Xiumei Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Lixin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
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47
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Xia QY, Lu D, Zhang JM, Wei YC, Yang MM, Yang ZY, Cao MB. [Intestinal flora polymorphisms with different lesional stages in an animal model of MAFLD]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:1069-1076. [PMID: 34933425 DOI: 10.3760/cma.j.cn501113-20200826-00478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To study the intestinal flora specific differences with different lesional stages of metabolic (disorder) associated fatty liver disease (MAFLD), namely simple steatosis and steatohepatitis, so as to provide a new direction for MAFLD-related intestinal flora transplantation and targeted therapy. Methods: Mice were fed with normal diet, methionine-choline deficient diet (MCD) and a high-fat high-fructose diet (HFHF) for 12 weeks to construct simple steatosis and steatohepatitis models. HE and Sirius scarlet staining was performed to observe the liver pathological changes. The qPCR method was used to evaluate inflammation and liver fibrosis factors. A fully automatic biochemical analyzer was used to detect changes in liver transaminase and blood lipids. 16S rRNA sequencing method was used to observe the intestinal flora differences in the feces of each group of mice. The comparison of means between two groups was performed by t-test, and the comparison of means between multiple groups was performed by one-way analysis of variance. Kruskal-Wallis rank sum test was used for non-normally distributed data. Results: NAFLD scores were determined with pathological sections (HE and Sirius scarlet staining) of mice liver, which showed that the inflammation and liver fibrosis scores of the MCD and HFHF groups were 2.12 ± 0.18 and 1.06 ± 0.24, and 2.22 ± 0.16 and 0.46 ± 0.10, respectively. The degree of liver inflammation and fibrosis was significantly higher in the MCD than the HFHF group (P < 0.001 and P < 0.01). Lipid deposition was higher in the HFHF than the MCD group (P < 0.001), and the scores were 2.36 ± 0.17 and 1.60 ± 0.24 respectively. Simultaneously, the inflammatory [tumor necrosis factor-A (TNF-a), chemokine factor-2 (CXCL-2)] and hepatic fibrosis indicators [vascular smooth muscle actin alpha (a-SMA) and connective tissue growth factor (CTGF)] had confirmed the above-mentioned results at the transcription level. Moreover, the intestinal flora diversity was reduced (P < 0.05) in the MCD group than the HFHF group, and the Simpson and Shannon index were 0.31 ± 0.10 and 0.42 ± 0.05, and 2.03 ± 0.33 and 1.70 ± 0.28, respectively, and the differences were significant between different intestinal flora groups. The levels of Desulfovibrio, Odoribacter, and Roseburia flora were significantly increased in the HFHF than the MCD group, and the levels of Faecalibaculum, Parasutterella, Alipis, Butyricimonas_virosa, Turicibacter_sp, and Romboutsia_ilealis were significantly increased in the MCD than the HFHF group, and the difference was statistically significant (P < 0.05). Conclusion: There are significant differences in intestinal flora diversity between simple steatosis and steatohepatitis models. Therefore, clarifying the difference between the two may provide a new direction for the stage manner treatment of MAFLD.
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Affiliation(s)
- Q Y Xia
- Department of Gastroenterology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
| | - D Lu
- Department of Gastroenterology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China Microbiology Laboratory, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - J M Zhang
- Department of Gastroenterology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
| | - Y C Wei
- Department of Gastroenterology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
| | - M M Yang
- Department of Gastroenterology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
| | - Z Y Yang
- Department of Gastroenterology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China Microbiology Laboratory, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - M B Cao
- Department of Gastroenterology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China Microbiology Laboratory, Henan Provincial People's Hospital, Zhengzhou 450003, China
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48
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Wang J, Huang X, Ge H, Wang Y, Chen W, Zheng L, Huang C, Yang H, Li L, Sui N, Wang Y, Zhang Y, Lu D, Fang L, Xu W, Jiang Y, Huang F, Wang Y. The Quantitative Proteome Atlas of a Model Cyanobacterium. J Genet Genomics 2021; 49:96-108. [PMID: 34775074 DOI: 10.1016/j.jgg.2021.09.007] [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] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 09/23/2021] [Accepted: 09/25/2021] [Indexed: 12/17/2022]
Abstract
Cyanobacteria are a group of oxygenic photosynthetic bacteria with great potentials in biotechnological applications and advantages as models for photosynthesis research. The subcellular locations of the majority of proteins in any cyanobacteria remain undetermined, representing a major challenge in using cyanobacteria for both basic and industrial researches. Here, using label free quantitative proteomics we mapped 2027 proteins of Synechocystis sp. PCC6803, a model cyanobacterium, to different subcellular compartments, and generated a proteome atlas with such information. The atlas leads to numerous unexpected but important findings, including the predominant localization of the histidine kinases Hik33 and Hik27 on the thylakoid but not the plasma membrane. Such information completely changes the concept regarding how the two kinases are activated. Together, the atlas provides subcellular localization information for nearly 60% proteome of a model cyanobacterium, and will serve as an important resource for the cyanobacterial research community.
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Affiliation(s)
- Jinlong Wang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Xiahe Huang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Haitao Ge
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yan Wang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Weiyang Chen
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Limin Zheng
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chengcheng Huang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haomeng Yang
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Bejing 100093, China
| | - Lingyu Li
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Bejing 100093, China
| | - Na Sui
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Yu Wang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yuanya Zhang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Longfa Fang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wu Xu
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504, USA
| | - Yuqiang Jiang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Huang
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Bejing 100093, China.
| | - Yingchun Wang
- State Key Laboratory of Molecular Developmental Biology, The Innovative Academy of Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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49
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Lu D, Chen J, Guo H, Li J. Vibrational energy pooling via collisions between asymmetric stretching excited CO 2: a quasi-classical trajectory study on an accurate full-dimensional potential energy surface. Phys Chem Chem Phys 2021; 23:24165-24174. [PMID: 34671798 DOI: 10.1039/d1cp03687d] [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: 11/21/2022]
Abstract
In low temperature plasmas, energy transfer between asymmetric stretching excited CO2 molecules can be highly efficient, which leads to further excitation (and de-excitation) of the CO2 molecules: CO2(vas) + CO2(vas) → CO2(vas + 1) + CO2(vas - 1). Through such a vibrational ladder climbing mechanism, CO2 can be activated and eventually dissociates. To gain mechanistic insight of such processes, a full-dimensional accurate potential energy surface (PES) for the CO2 + CO2 system is developed using the permutational invariant polynomial-neural network method based on CCSD(T)-F12a/AVTZ energies at about 39 000 geometries. This PES is used in quasi-classical trajectory (QCT) studies of the vibrational energy transfer between CO2 molecules excited in the asymmetric stretching mode. A machine learning algorithm is used to determine state-specific rate coefficients for the vibrational transfer processes from a limited data set. In addition to the CO2(vas + 1) + CO2(vas - 1) channel, the QCT simulations revealed significant contributions from the CO2(vas + 2,3) + CO2(vas - 2,3) channels, particularly at low collision energies/temperatures. These multi-vibrational-quantum processes are attributed to enhanced energy flow in the collisional complex formed by enhanced dipole-dipole interaction between asymmetric stretching excited CO2 molecules.
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Affiliation(s)
- Dandan Lu
- School of Chemistry and Chemical Engineering & Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China. .,Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico, 87131, USA
| | - Jun Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico, 87131, USA
| | - Jun Li
- School of Chemistry and Chemical Engineering & Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China.
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Xu X, Zheng C, Lu D, Song CP, Zhang L. Phase separation in plants: New insights into cellular compartmentalization. J Integr Plant Biol 2021; 63:1835-1855. [PMID: 34314106 DOI: 10.1111/jipb.13152] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 07/16/2021] [Indexed: 05/16/2023]
Abstract
A fundamental challenge for cells is how to coordinate various biochemical reactions in space and time. To achieve spatiotemporal control, cells have developed organelles that are surrounded by lipid bilayer membranes. Further, membraneless compartmentalization, a process induced by dynamic physical association of biomolecules through phase transition offers another efficient mechanism for intracellular organization. While our understanding of phase separation was predominantly dependent on yeast and animal models, recent findings have provided compelling evidence for emerging roles of phase separation in plants. In this review, we first provide an overview of the current knowledge of phase separation, including its definition, biophysical principles, molecular features and regulatory mechanisms. Then we summarize plant-specific phase separation phenomena and describe their functions in plant biological processes in great detail. Moreover, we propose that phase separation is an evolutionarily conserved and efficient mechanism for cellular compartmentalization which allows for distinct metabolic processes and signaling pathways, and is especially beneficial for the sessile lifestyle of plants to quickly and efficiently respond to the changing environment.
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Affiliation(s)
- Xiumei Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Canhui Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Chun-Peng Song
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Lixin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
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