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Pei R, Liu J, Jing C, Zhang M. A Multienzyme Cascade Pathway Immobilized in a Hydrogen-Bonded Organic Framework for the Conversion of CO 2. Small 2024; 20:e2306117. [PMID: 37994262 DOI: 10.1002/smll.202306117] [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] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/09/2023] [Indexed: 11/24/2023]
Abstract
The reduction of carbon dioxide to valuable chemicals through enzymatic processes is regarded as a promising approach for the reduction of carbon dioxide emissions. In this study, an in vitro multi-enzyme cascade pathway is constructed for the conversion of CO2 into dihydroxyacetone (DHA). This pathway, known as FFFP, comprises formate dehydrogenase (FDH), formaldehyde dehydrogenase (FaldDH), formolase (FLS), and phosphite dehydrogenase (PTDH), with PTDH serving as the critical catalyst for regenerating the coenzyme NADH. Subsequently, the immobilization of the FFFP pathway within the hydrogen-bonded organic framework (HOF-101) is accomplished in situ. A 1.8-fold increase in DHA yield is observed in FFFP@HOF-101 compared to the free FFFP pathway. This enhancement can be explained by the fact that within FFFP@HOF-101, enzymes are positioned sufficiently close to one another, leading to the elevation of the local concentration of intermediates and an improvement in mass transfer efficiency. Moreover, FFFP@HOF-101 displays a high degree of stability. In addition to the establishment of an effective DHA production method, innovative concepts for the tailored synthesis of fine compounds from CO2 through the utilization of various multi-enzyme cascade developments are generated by this work.
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Affiliation(s)
- Rui Pei
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Jing Liu
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Chuanyong Jing
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Min Zhang
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
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Vu TTM, Zhang A, Wang R, Mathew S, Abeywardana T, Beltran-Lemus M, Ma V, Libby M, Thomas D, Wakefield I, Zhu Q, Lowe D, Pei R. Using single antigen specificity magnetic beads for the isolation of specific antibodies against HLA antigens. HLA 2024; 103:e15490. [PMID: 38634568 DOI: 10.1111/tan.15490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 03/14/2024] [Accepted: 04/05/2024] [Indexed: 04/19/2024]
Abstract
The presence of multiple donor-specific antibodies (DSAs) targeting HLA antigens poses a challenge to transplantation. Various techniques, including the use of recombinant cell lines and crossmatch cells have been developed to isolate DSAs. To simplify the extraction of HLA-specific DSAs from complex sera, we introduced magnetic beads with single HLA specificity (MagSort). Sera were treated with MagSort, allowing HLA-specific antibodies to bind to the beads, and these specific antibodies were subsequently eluted. MagSort beads, coated with 59 different HLA variants, underwent testing through 1329 adsorption/elution processes, demonstrating their effectiveness and specificity in adsorbing and eluting HLA-specific antibodies. The MagSort method proves comparable to the cell method, showing similar isolated antibody binding patterns. The isolated antibody binding patterns from MagSort reveal both known eplets and unknown patterns, suggesting its utility for eplet discovery. Additionally, MagSort proved effective in extracting signals for flow cytometry cross-matching, offering a means to assess the binding capability of isolated antibodies against specific donor cells.
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Affiliation(s)
- Tri T M Vu
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Aiwen Zhang
- Allogen Laboratories, Cleveland Clinic, Cleveland, Ohio, USA
| | - Ronald Wang
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Shalu Mathew
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Tharindumala Abeywardana
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Marissa Beltran-Lemus
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Vincent Ma
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Mary Libby
- Allogen Laboratories, Cleveland Clinic, Cleveland, Ohio, USA
| | - Dawn Thomas
- Allogen Laboratories, Cleveland Clinic, Cleveland, Ohio, USA
| | - Ito Wakefield
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Quansheng Zhu
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - David Lowe
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Rui Pei
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
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Xu K, Pei R, Zhang M, Jing C. Iron oxide-supported gold nanoparticle electrode for simultaneous detection of arsenic and sulfide on-site. Anal Chim Acta 2024; 1288:342120. [PMID: 38220269 DOI: 10.1016/j.aca.2023.342120] [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: 10/11/2023] [Revised: 11/23/2023] [Accepted: 12/05/2023] [Indexed: 01/16/2024]
Abstract
The environmental behavior of arsenic (As) has garnered significant attention due to its hazardous nature. The fate of As often couples with sulfide, thus co-detecting arsenic and sulfide on-site is crucial for comprehending their geochemical interactions. While electrochemical methods are suitable for on-site chemical analysis, there currently exists no electrode capable of simultaneously detecting both arsenic and sulfide. To address this, we developed a dual-metal electrode consisting of iron oxide-encased carbon cloth loaded with gold nanoparticles (Au/FeOx/CC) using the electrochemical deposition method. This electrode enables square wave stripping voltammetry (SWASV) binary detection of As and sulfide. Comparison experiments reveal that the reaction sites for sulfide primarily reside on FeOx, while the interface synergy of iron oxide and gold nanoparticles enhances the response to arsenite (AsIII). Arsenate (AsV) is directly reduced to As0 on Fe0, obviating the need for an external reducing agent. The electrode achieves detection limits of 1.5 μg/L for AsV, 0.25 μg/L for AsIII, and 11.6 μg/L for sulfide at mild conditions (pH 7.8). Field validation was conducted in the Tengchong geothermal hot spring region, where the electrochemical method exhibited good correlation with the standard methods: Total As (r = 0.978 vs. ICP-MS), AsIII (r = 0.895 vs. HPLC-ICP-MS), and sulfide (r = 0.983 vs. colorimetric method). Principal component analysis and correlation analysis suggest that thioarsenic, could potentially be positive interferents for AsIII. However, this interference can be anticipated and mitigated by monitoring the abundance of sulfide. The study provides new insights and problems for the electrochemical detection of coexisted As and sulfide.
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Affiliation(s)
- Kun Xu
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Rui Pei
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Min Zhang
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China.
| | - Chuanyong Jing
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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4
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Pei R, Courtney AL, Ferguson I, Brennan C, Zaki J. A neural signature of social support mitigates negative emotion. Sci Rep 2023; 13:17293. [PMID: 37828064 PMCID: PMC10570303 DOI: 10.1038/s41598-023-43273-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 09/21/2023] [Indexed: 10/14/2023] Open
Abstract
Social support can mitigate the impact of distressing events. Such stress buffering elicits activity in many brain regions, but it remains unclear (1) whether this activity constitutes a stable brain signature, and (2) whether brain activity can predict buffering across people. Here, we developed a neural signature that predicted social buffering of negative emotion in response to real life stressors. During neuroimaging, participants (n = 95) responded to stressful autobiographical memories either naturally, or by imagining a conversation with a peer. Using supervised dimensionality reduction and machine learning techniques, we identified a spatio-temporal neural signature that distinguished between these two trials. Activation of this signature was associated with less negative affect across trials, and people who most activated the signature reported more supportive social connections and lower loneliness outside the lab. Together, this work provides a behaviorally relevant neurophysiological marker for social support that underlies stress buffering.
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Affiliation(s)
- Rui Pei
- Department of Psychology, Stanford University, Stanford, USA.
| | | | - Ian Ferguson
- Department of Psychology, Stanford University, Stanford, USA
| | | | - Jamil Zaki
- Department of Psychology, Stanford University, Stanford, USA.
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Ho J, Schaub S, Jackson AM, Balshaw R, Carroll R, Cun S, De Serres SA, Fantus D, Handschin J, Hönger G, Jevnikar AM, Kleiser M, Lee JH, Li Y, Nickerson P, Pei R, Pochinco D, Shih R, Trinh M, Wang J, Nguyen J, Knechtle S. Multicenter Validation of a Urine CXCL10 Assay for Noninvasive Monitoring of Renal Transplants. Transplantation 2023; 107:1630-1641. [PMID: 36949034 DOI: 10.1097/tp.0000000000004554] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
BACKGROUND Urine CXCL10 (C-X-C motif chemokine ligand 10, interferon gamma-induced protein 10 [IP10]) outperforms standard-of-care monitoring for detecting subclinical and early clinical T-cell-mediated rejection (TCMR) and may advance TCMR therapy development through biomarker-enriched trials. The goal was to perform an international multicenter validation of a CXCL10 bead-based immunoassay (Luminex) for transplant surveillance and compare with an electrochemiluminescence-based (Meso Scale Discovery [MSD]) assay used in transplant trials. METHODS Four laboratories participated in the Luminex assay development and evaluation. Urine CXCL10 was measured by Luminex and MSD in 2 independent adult kidney transplant trial cohorts (Basel and TMCT04). In an independent test and validation set, a linear mixed-effects model to predict (log 10 -transformed) MSD CXCL10 from Luminex CXCL10 was developed to determine the conversion between assays. Net reclassification was determined after mathematical conversion. RESULTS The Luminex assay was precise, with an intra- and interassay coefficient of variation 8.1% and 9.3%; showed modest agreement between 4 laboratories (R 0.96 to 0.99, P < 0.001); and correlated with known CXCL10 in a single- (n = 100 urines, R 0.94 to 0.98, P < 0.001) and multicenter cohort (n = 468 urines, R 0.92, P < 0.001) but the 2 assays were not equivalent by Passing-Bablok regression. Linear mixed-effects modeling demonstrated an intercept of -0.490 and coefficient of 1.028, showing Luminex CXCL10 are slightly higher than MSD CXCL10, but the agreement is close to 1.0. After conversion of the biopsy thresholds, the decision to biopsy would be changed for only 6% (5/85) patients showing acceptable reclassification. CONCLUSIONS These data demonstrate this urine CXCL10 Luminex immunoassay is robust, reproducible, and accurate, indicating it can be readily translated into clinical HLA laboratories for serial posttransplant surveillance.
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Affiliation(s)
- Julie Ho
- Department of Internal Medicine and Immunology, University of Manitoba, Winnipeg, Canada
- Transplant Manitoba, Shared Health Manitoba, Winnipeg, Canada
| | - Stefan Schaub
- Transplantation Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
- Clinic for Transplantation Immunology and Nephrology, University Hospital Basel, Basel, Switzerland
- HLA-Diagnostic and Immunogenetics, Department of Laboratory Medicine, University Hospital Basel, Basel, Switzerland
| | | | - Robert Balshaw
- George and Fay Yee Center for Healthcare Innovation, Manitoba, Canada
| | - Robert Carroll
- Royal Adelaide Hospital, University of Adelaide, SA, Australia
| | - Sylvia Cun
- Thermo Fisher Scientific, Los Angeles, CA
| | | | - Daniel Fantus
- Division of Nephrology, Department of Medicine, Centre Hospitalier de l'Université de Montréal (CHUM) and Centre de Recherche du CHUM (CRCHUM), Montréal, Québec, Canada
| | - Joelle Handschin
- Transplantation Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Gideon Hönger
- Transplantation Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
- Clinic for Transplantation Immunology and Nephrology, University Hospital Basel, Basel, Switzerland
- HLA-Diagnostic and Immunogenetics, Department of Laboratory Medicine, University Hospital Basel, Basel, Switzerland
| | - Anthony M Jevnikar
- Department of Medicine, Western University and Multiorgan Transplant Program, London, ON, Canada
| | - Marc Kleiser
- HLA-Diagnostic and Immunogenetics, Department of Laboratory Medicine, University Hospital Basel, Basel, Switzerland
| | | | - Yan Li
- Department of Surgery and Immunology, Duke University, Durham, NC
| | - Peter Nickerson
- Department of Internal Medicine and Immunology, University of Manitoba, Winnipeg, Canada
- Transplant Manitoba, Shared Health Manitoba, Winnipeg, Canada
- Canadian Blood Services HLA Laboratory, Diagnostic Services of Manitoba, Canada
| | - Rui Pei
- Thermo Fisher Scientific, Los Angeles, CA
| | - Denise Pochinco
- Canadian Blood Services HLA Laboratory, Diagnostic Services of Manitoba, Canada
| | - Remi Shih
- Terasaki Innovation Center, Los Angeles, CA
| | | | - Jason Wang
- Thermo Fisher Scientific, Los Angeles, CA
| | | | - Stuart Knechtle
- Department of Surgery and Immunology, Duke University, Durham, NC
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Pei R, Ye L, Jing C. Enzyme-based electrochemical biosensor for antimonite detection in water. Biosens Bioelectron 2023; 229:115244. [PMID: 36966618 DOI: 10.1016/j.bios.2023.115244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/31/2023]
Abstract
Antimonite (SbIII) is a naturally occurring contaminant demanding on-site ultrasensitive detection. The enzyme-based electrochemical (EC) biosensors are promising, but the lack of specific SbIII oxidizing enzymes hindered the past efforts. Herein, we modulated the specificity of arsenite oxidase AioAB toward SbIII by regulating its spatial conformation from tight to loose using the metal-organic framework ZIF-8. The constructed EC biosensor, AioAB@ZIF-8, exhibited the substrate specificity toward SbIII at 12.8 s-1 μM-1, an order of magnitude higher than that of AsIII (1.1 s-1 μM-1). Relaxing AioAB structure in ZIF-8 was evidenced by the break of the S-S bond and the conversion of α helix to the random coil as suggested by Raman spectroscopy. Our AioAB@ZIF-8 EC sensor exhibited a dynamic linear range in 0.041-4.1 μM at a response time of 5 s, and the detection limit at 0.041 μM at a high sensitivity of 1894 nA μM-1. The insights into tuning the specificity of an enzyme shed new light on biosensing metal(loid)s without specific proteins.
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Wang Y, Li Z, Wang CC, Bailleul AM, Wang M, O'Connor J, Li J, Zheng X, Pei R, Teng F, Wang X, Zhou Z. Comparative microstructural study on the teeth of Mesozoic birds and non-avian dinosaurs. R Soc Open Sci 2023; 10:230147. [PMID: 37206961 PMCID: PMC10189602 DOI: 10.1098/rsos.230147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 04/24/2023] [Indexed: 05/21/2023]
Abstract
Although it is commonly considered that, in birds, there is a trend towards reduced dentition, teeth persisted in birds for 90 Ma and numerous macroscopic morphologies are observed. However, the extent to which the microstructure of bird teeth differs from other lineages is poorly understood. To explore the microstructural differences of the teeth of birds in comparison with closely related non-avialan dinosaurs, the enamel and dentine-related features were evaluated in four Mesozoic paravian species from the Yanliao and Jehol biotas. Different patterns of dentinal tubular tissues with mineralized extensions of the odontoblast processes were revealed through the examination of histological sectioning under electron microscopy. Secondary modification of the tubular structures, forming reactive sclerotic dentin of Longipteryx, and the mineralization of peritubular dentin of Sapeornis were observed in the mantle dentin region. The new observed features combined with other dentinal-associated ultrastructure suggest that the developmental mechanisms controlling dentin formation are quite plastic, permitting the evolution of unique morphologies associated with specialized feeding behaviours in the toothed birds. Proportionally greater functional stress placed on the stem bird teeth may have induced reactive dentin mineralization, which was observed more often within tubules of these taxa. This suggests modifications to the dentin to counteract potential failure.
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Affiliation(s)
- Yan Wang
- Institute of Geology and Paleontology, Linyi University, Linyi, Shandong 276000
- Tianyu Natural History Museum of Shandong, Pingyi, Shandong 273300
| | - Zhiheng Li
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 142 Xi-zhi-men-wai Street, Beijing 100044
| | - Chun-Chieh Wang
- National Synchrotron Radiation Research Center, Hsinchu 30076
- Department of Geosciences, National Taiwan University, Taipei City 10617
| | - Alida M. Bailleul
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 142 Xi-zhi-men-wai Street, Beijing 100044
| | - Min Wang
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 142 Xi-zhi-men-wai Street, Beijing 100044
| | - Jingmai O'Connor
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL 60605
| | - Jinhua Li
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Innovation Academy for Earth Science, Chinese Academy of Sciences (IGGCAS), Beijing 100029
| | - Xiaoting Zheng
- Tianyu Natural History Museum of Shandong, Pingyi, Shandong 273300
| | - Rui Pei
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 142 Xi-zhi-men-wai Street, Beijing 100044
| | - Fangfang Teng
- Xinghai Paleontological Museum of Dalian, Dalian, Liaoning 116023
| | - Xiaoli Wang
- Institute of Geology and Paleontology, Linyi University, Linyi, Shandong 276000
- Tianyu Natural History Museum of Shandong, Pingyi, Shandong 273300
| | - Zhonghe Zhou
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 142 Xi-zhi-men-wai Street, Beijing 100044
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Pei R, Tarek-Bahgat N, Van Loosdrecht MCM, Kleerebezem R, Werker AG. Influence of environmental conditions on accumulated polyhydroxybutyrate in municipal activated sludge. Water Res 2023; 232:119653. [PMID: 36758350 DOI: 10.1016/j.watres.2023.119653] [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: 09/29/2022] [Revised: 01/14/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Poly(3-hydroxybutyrate) (PHB) was accumulated in full-scale municipal waste activated sludge at pilot scale. After accumulation, the fate of the PHB-rich biomass was evaluated over two weeks as a function of initial pH (5.5, 7.0 and 10), and incubation temperature (25, 37 and 55°C), with or without aeration. PHB became consumed under aerobic conditions as expected with first order rate constants in the range of 0.19 to 0.55 d-1. Under anaerobic conditions, up to 63 percent of the PHB became consumed within the first day (initial pH 7, 55°C). Subsequently, with continued anaerobic conditions, the polymer content remained stable in the biomass. Degradation rates were lower for acidic anaerobic incubation conditions at a lower temperature (25°C). Polymer thermal properties were measured in the dried PHB-rich biomass and for the polymer recovered by solvent extraction using dimethyl carbonate. PHB quality changes in dried biomass, indicated by differences in polymer melt enthalpy, correlated to differences in the extent of PHB extractability. Differences in the expressed PHB-in-biomass melt enthalpy that correlated to the polymer extractability suggested that yields of polymer recovery by extraction can be influenced by the state or quality of the polymer generated during downstream processing. Different post-accumulation process biomass management environments were found to influence the polymer quality and can also influence the extraction of non-polymer biomass. An acidic post-accumulation environment resulted in higher melt enthalpies in the biomass and, consequently, higher extraction efficiencies. Overall, acidic environmental conditions were found to be favourable for preserving both quantity and quality after PHB accumulation in activated sludge.
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Affiliation(s)
- R Pei
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, The Netherlands.
| | - N Tarek-Bahgat
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, The Netherlands
| | - M C M Van Loosdrecht
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - R Kleerebezem
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - A G Werker
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, The Netherlands
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Minich M, Falk EB, Cooper N, Cosme D, Chan HY, Pei R, O'Donnell MB, Cascio CN. Neural correlates associated with conformity in adolescent and young adult men. Dev Cogn Neurosci 2023; 60:101215. [PMID: 36841181 PMCID: PMC9982604 DOI: 10.1016/j.dcn.2023.101215] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 02/02/2023] [Accepted: 02/08/2023] [Indexed: 02/17/2023] Open
Abstract
Social influence affects us throughout our lives, shaping our attitudes, behaviors, and preferences. Thus, the current study aimed to examine whether key age groups (adolescence versus young adulthood) were associated with differences in neural correlates associated with processing social feedback and conformity (i.e., conflict detection, positive valuation, and mentalizing) among young men. We recruited 153 participants across 5 studies, who completed a social influence task during an fMRI scan. Overall, participants were more likely to conform by changing their ratings when misaligned with others, and adolescents were more likely to conform when misaligned (compared to aligned) with others compared to young adults. Further, we found that adolescents showed increased activity in mentalizing (TPJ, dmPFC) and positive valuation regions (VS, vmPFC), compared to young adults, in response to misalignment with others. In contrast, young adults showed increased activity in conflict detection regions (AI, dACC) when exposed to feedback that they were misaligned with others and when conforming to that feedback. Overall, our results offer initial evidence that adolescent and young adult men engage different neural processes when they find out they are misaligned with others and when conforming to the recommendations of others, and this difference appears to track with brain responses in conflict detection, mentalizing and value regions. DATA STATEMENT: Raw data and analysis codes are available upon request.
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Affiliation(s)
- Matt Minich
- University of Wisconsin-Madison, United States.
| | | | | | | | | | - Rui Pei
- University of Pennsylvania, United States; Stanford University, United States
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10
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Pei R, Lu H, Wang F, Ma R, Tian Y. The Fluorescence Response of Four Crystalline Starches According to Ultrasound-Assisted Starch-Salicylic Acid Inclusions. Foods 2023; 12:foods12071431. [PMID: 37048252 PMCID: PMC10093816 DOI: 10.3390/foods12071431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/03/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
Fluorescence has shown its superior performance in the fields of starch physicochemical properties, starch–based materials, and the interactions of starch with small molecules. However, it has not been well explored in the fluorescence characteristics of starch. Herein, the fluorescence properties of four crystalline starches (A–type tapioca starch, B–type potato starch, C–type pea starch, and V–type starch, prepared with corn starch and stearic acid) were investigated using salicylic acid (SA) as an indicator. The results of inverted fluorescence microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis indicated that SA could be included by starch. X–ray diffraction analysis further demonstrated that the inclusion of SA did not change the crystalline of the four crystal types of starches, which could provide a prerequisite for comparing the different fluorescence properties of the four crystal types of starches. Fluorescence enhancements of the four inclusions were 264.5 (B–type), 206 (C–type), 51.2 (V–type), and 28 (A–type). These results provide new insights for analyzing the fluorescence response of starch.
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Affiliation(s)
- Rui Pei
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Hao Lu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Fan Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Rongrong Ma
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Yaoqi Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
- Correspondence:
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11
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Zhao S, Zeng B, Pei R, Fu X, Zhu M, Zhang G, Jiang W. Programmable and printable formaldehyde dehydrogenase as an excellent catalyst for biodegradation of formaldehyde. Int J Bioprint 2023. [DOI: 10.18063/ijb.695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
As an environmental pollutant, formaldehyde can cause serious harm to the human body. Among many degradation methods, formaldehyde dehydrogenase from Pseudomonas putida (PFDH) exhibits broad potential because of its strong catalytic specificity and high degradation efficiency. However, the real application of PFDH in industry is limited by its instability and difficulties in recycling. In this work, the suitable printing conditions for immobilizing PFDH by three-dimensional (3D) printing technology were studied: the concentration of sodium alginate (SA) was 1.635 wt%, the concentration of CaCl2 was 7.4 wt%, the crosslinking time with CaCl2 was 8 min, and the temperature of the reaction was 31.5°C. 3D-printed PFDH/calcium alginate (CA) microspheres have 210% relative enzyme activity after seven repeated uses. Dried PFDH/CA particles were characterized by scanning electron microscope (SEM), Fourier transform infrared spectrometer (FT-IR), EDS elemental mapping, and thermogravimetric analysis (TGA) which proved that the enzyme was immobilized by the material. In addition, the recycling ability of 3D printing to immobilize different objects was explored and different shapes were designed by computer-aided design (CAD). In conclusion, 3D printing technology was applied to immobilize PFDH in this work, which provides a new idea to biodegrade formaldehyde in a green way.
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Meng T, Bezstarosti S, Singh U, Yap M, Scott L, Petrosyan N, Quiroz F, Eps NV, Hui EKW, Suh D, Zhu Q, Pei R, Kramer CSM, Claas FHJ, Lowe D, Heidt S. Site-directed mutagenesis of HLA molecules reveals the functional epitope of a human HLA-A1/A36-specific monoclonal antibody. HLA 2023; 101:138-142. [PMID: 36401817 PMCID: PMC10099858 DOI: 10.1111/tan.14895] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/13/2022] [Accepted: 11/18/2022] [Indexed: 11/21/2022]
Abstract
Eplet 44KM is currently listed in the HLA Epitope Registry but does not adhere to the eplet definition of an amino acid configuration within a 3.5 Å radius. Eplet 44KM has been previously redefined to the antibody-verified reactivity pattern 44K/150V/158V, based on reactivity analysis of monoclonal antibody VDK1D12. Since the three residues are always simultaneously present on common HLA alleles, methods to define which residue is crucial for antibody-induction and binding are limited. In this proof-of-concept study, we performed site-directed mutagenesis to narrow down the antibody-verified reactivity pattern 44K/150V/158V to a single amino acid and defined 44K as the eplet or functional epitope of mAb VDK1D12.
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Affiliation(s)
- Tina Meng
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Suzanne Bezstarosti
- Department of Immunology, Leiden University Medical Center, Leiden, The Netherlands.,Department of Internal Medicine (Nephrology), Leiden University Medical Center, Leiden, The Netherlands
| | - Ujjwala Singh
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Michelle Yap
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Laura Scott
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Naiiry Petrosyan
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Fred Quiroz
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Ned Van Eps
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Eric Ka-Wai Hui
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - David Suh
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Quansheng Zhu
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Rui Pei
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Cynthia S M Kramer
- Department of Immunology, Leiden University Medical Center, Leiden, The Netherlands
| | - Frans H J Claas
- Department of Immunology, Leiden University Medical Center, Leiden, The Netherlands
| | - David Lowe
- Department of Research and Development, One Lambda, Inc. (A Part of Thermo Fisher Scientific Inc.), West Hills, California, USA
| | - Sebastiaan Heidt
- Department of Immunology, Leiden University Medical Center, Leiden, The Netherlands
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13
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Fei Z, Pan B, Pei R, Ye S, Wang Z, Ma L, Zhang R, Li C, Du X, Cao H. Neuroprotective Effects of IVIG against Alzheimer' s Disease via Regulation of Antigen Processing and Presentation by MHC Class I Molecules in 3xTg-AD Mice. J Prev Alzheimers Dis 2023; 10:581-594. [PMID: 37357300 DOI: 10.14283/jpad.2023.56] [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: 06/27/2023]
Abstract
BACKGROUND The results of clinical trials for Alzheimer's disease (AD) patients treated with Intravenous immunoglobulin (IVIG) revealed inconsistency in efficacy. OBJECTIVE To explore the neuroprotective effects and possible mechanisms of different IVIG in 3xTg-AD mice. METHODS 3-month-old 3xTg-AD mice were administered intraperitoneally with different IVIG (A/B/C) for 3 months and then the therapeutic effects were observed and tested at 9 months of age. The bioavailability of IVIG and Aβ40/42 concentrations in parietotemporal cortex was measured by ELISA. Behavioral tests were performed to examine cognitive functions. Immunohistochemistry was utilized to examine the deposition of Aβ, the phosphorylation of tau, the levels of GFAP and Iba-1 in the hippocampus. Proteomics, Luminex assay and parallel reaction monitoring were performed to identify and verify the proteins that showed a marked change in the hippocampus. RESULTS IVIG-C was more effective than IVIG-A and IVIG-B in counteracting cognitive deficits, ameliorating Aβ deposits and tau phosphorylation, attenuating the activation of microglia and astrocytes in the hippocampus and inhibiting the secretion of pro-inflammatory factors. IVIG-C affected innate immunity and suppressed the activation of antigen processing and presentation by MHC class I molecule (APP-MHC-I). CONCLUSION The efficacy of different IVIG on AD was significantly different, and only IVIG-C has been confirmed to possess significant neuroprotective effects, which are related to the inhibition of APP-MHC-I. IVIG may be a potential therapeutic for AD but further research is needed to evaluate the functional of IVIG before clinical trials of AD treatment.
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Affiliation(s)
- Z Fei
- Xi Du and Haijun Cao , Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu 610052, China, ; . Tel: 86-28-61648527
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14
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Brennan C, Aggarwal A, Pei R, Sussillo D, Proekt A. One dimensional approximations of neuronal dynamics reveal computational strategy. PLoS Comput Biol 2023; 19:e1010784. [PMID: 36607933 PMCID: PMC9821456 DOI: 10.1371/journal.pcbi.1010784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 12/01/2022] [Indexed: 01/07/2023] Open
Abstract
The relationship between neuronal activity and computations embodied by it remains an open question. We develop a novel methodology that condenses observed neuronal activity into a quantitatively accurate, simple, and interpretable model and validate it on diverse systems and scales from single neurons in C. elegans to fMRI in humans. The model treats neuronal activity as collections of interlocking 1-dimensional trajectories. Despite their simplicity, these models accurately predict future neuronal activity and future decisions made by human participants. Moreover, the structure formed by interconnected trajectories-a scaffold-is closely related to the computational strategy of the system. We use these scaffolds to compare the computational strategy of primates and artificial systems trained on the same task to identify specific conditions under which the artificial agent learns the same strategy as the primate. The computational strategy extracted using our methodology predicts specific errors on novel stimuli. These results show that our methodology is a powerful tool for studying the relationship between computation and neuronal activity across diverse systems.
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Affiliation(s)
- Connor Brennan
- Department of Neuroscience, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Adeeti Aggarwal
- Department of Neuroscience, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Rui Pei
- Department of Psychology, Stanford University, Palo Alto, California, United States of America
| | - David Sussillo
- Stanford Neurosciences Institute, Stanford University, Palo Alto, California, United States of America
- Department of Electrical Engineering, Stanford University, Palo Alto, California, United States of America
| | - Alex Proekt
- Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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Ma J, Ye W, Yang Y, Wu T, Wang Y, Li J, Pei R, He M, Zhang L, Zhou J. The interaction between autophagy and the epithelial-mesenchymal transition mediated by NICD/ULK1 is involved in the formation of diabetic cataracts. Mol Med 2022; 28:116. [PMID: 36104669 PMCID: PMC9476327 DOI: 10.1186/s10020-022-00540-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 09/02/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Cataracts are the leading cause of blindness and a common ocular complication of diabetes. The epithelial-mesenchymal transition (EMT) of lens epithelial cells (LECs) and altered autophagic activity occur during the development of diabetic cataracts. The disturbed interaction of autophagy with EMT in LECs stimulated by high glucose levels may participate in cataract formation.
Methods
A rat diabetic cataract model induced by streptozotocin (STZ) and human lens epithelial cells (HLE-B3) stimulated with a high glucose concentration were employed in the study. These models were treated with rapamycin (an inhibitor of mammalian target of rapamycin (mTOR)), and N-(N-[3,5-difluorophenacetyl]-1-alanyl)-S-phenylglycine t-butyl ester (DAPT, an inhibitor of γ-secretase) alone or in combination. Lens opacity was observed and photographed under a slit-lamp microscope. Histological changes in paraffin sections of lenses were detected under a light microscope after hematoxylin and eosin staining. Alterations of autophagosomes in LECs were counted and evaluated under a transmission electron microscope. The expression levels of proteins involved in the EMT, autophagy, and the signaling pathways in LECs were measured using Western blotting and immunofluorescence staining. Cell migration was determined by performing transwell and scratch wound assays. Coimmunoprecipitation (Co-IP) was performed to verify protein-protein interactions. Proteins were overexpressed in transfected cells to confirm their roles in the signaling pathways of interest.
Results
In LECs, a high glucose concentration induces the EMT by activating Jagged1/Notch1/Notch intracellular domain (NICD)/Snail signaling and inhibits autophagy through the AKT/mTOR/unc 51-like kinase 1 (ULK1) signaling pathway in vivo and in vitro, resulting in diabetic cataracts. Enhanced autophagic activity induced by rapamycin suppressed the EMT by inducing Notch1 degradation by SQSTM1/p62 and microtubule-associated protein light chain 3 (LC3) in LECs, while inhibition of the Notch signaling pathway with DAPT not only prevented the EMT but also activated autophagy by decreasing the levels of NICD, which bound to ULK1, phosphorylated it, and then inhibited the initiation of autophagy.
Conclusions
We describe a new interaction of autophagy and the EMT involving NICD/ULK1 signaling, which mediates crosstalk between these two important events in the formation of diabetic cataracts. Activating autophagy and suppressing the EMT mutually promote each other, revealing a potential target and strategy for the prevention of diabetic cataracts.
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16
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Shi Y, Pei R, Liu S. Osimertinib versus platinum-pemetrexed in patients with previously treated EGFR T790M advanced non-small cell lung cancer: An updated AURA3 trial-based cost-effectiveness analysis. Front Oncol 2022; 12:833773. [DOI: 10.3389/fonc.2022.833773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 09/30/2022] [Indexed: 12/24/2022] Open
Abstract
BackgroundA recently overall survival (OS) analysis from the AURA3 trial indicated that osimertinib improves median OS versus platinum-pemetrexed for patients with previously treated epidermal growth factor receptor (EGFR) T790M advanced non-small cell lung cancer (NSCLC). Here, we assessed the cost-effectiveness of second-line osimertinib versus platinum-pemetrexed, from the perspectives of the United States payer and the Chinese health care system.MethodsA Markov model was constructed to compare the costs and health outcomes of osimertinib versus platinum-pemetrexed in second-line treatment of EGFR T790M advanced NSCLC. Life years (LYs), quality adjusted life years (QALYs), costs, and incremental cost-effectiveness ratios (ICERs) were calculated. One-way and probabilistic sensitivity analyses assessed the robustness of the model. Cost-effectiveness was examined in the intention-to-treat (ITT) population and central nervous system (CNS) metastases population.ResultsIn the United States, compared with platinum-pemetrexed, osimertinib yielded additional effectiveness of 0.43 QALYs and -0.12 QALYs, with incremental costs of $67,588 and $16,465 in the ITT population and CNS metastases population, respectively. The ICERs of osimertinib over platinum-pemetrexed were $159,126/QALY and $-130,830/QALY, respectively. The probability of osimertinib being cost-effective was 37% and 5.76%, respectively, at the willingness-to-pay (WTP) threshold of $150,000/QALY. In China, osimertinib showed incremental effectiveness of 0.34 QALYs and -0.14 QALYs, with incremental costs of $1,663 and $-505, resulting in ICERs of $4,950/QALY and $3,754/QALY in the ITT population and CNS metastases population, respectively. At the WTP threshold of $37,489/QALY, there was a 100% and 26% likelihood that osimertinib was cost-effective in the ITT population and CNS metastases population.ConclusionIn the United States, second-line osimertinib treatment for EGFR T790M advanced NSCLC is not cost-effective compared to platinum-pemetrexed under the current WTP threshold. When the osimertinib price reduces, the economic outcome may become favorable. In China, assuming a WTP threshold of $37,489/QALY, osimertinib is the dominant treatment strategy compared with platinum-pemetrexed in the ITT population and provides cost savings for CNS metastases patients.
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Tian L, Pei R, Zhang X, Li K, Zhong Y, Luo Y, Zhou SF, Chen L. Tumor Cell-Specific and Lipase-Responsive Delivery of Hydrogen Sulfide for Sensitizing Chemotherapy of Pancreatic Cancer. Front Bioeng Biotechnol 2022; 10:934151. [PMID: 35898641 PMCID: PMC9309817 DOI: 10.3389/fbioe.2022.934151] [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: 05/02/2022] [Accepted: 06/08/2022] [Indexed: 11/23/2022] Open
Abstract
The inability of small molecule drugs to diffuse into tumor interstitium is responsible for the relatively low effectiveness of chemotherapy. Herein, a hydrogen sulfide (H2S) gas–involved chemosensitization strategy is proposed for pancreatic cancer treatment by developing a tumor-specific lipase-responsive nanomedicine based on aptamer-conjugated DATS/Dox co-loaded PCL-b-PEO micelle (DA/D@Ms-A). After receptor-mediated endocytosis and subsequent digestion of PCL blocks by intracellular lipase, the nanomedicine releases Dox and DATS, which then react with intracellular glutathione to produce H2S. The cytotoxicity result indicates that H2S can enhance Dox chemotherapy efficiency owing to the synergetic therapeutic effect of Dox and H2S. Moreover, the nanomedicine is featured with well tumor penetration capability benefitting from the targeting ability of aptamers and high in vivo biocompatibility due to the high density of PEO and biodegradable PCL. The nanomedicine capable of synergetic gas-chemotherapy holds great potential for pancreatic cancer treatment.
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Affiliation(s)
- Libing Tian
- College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Rui Pei
- College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Xiaojun Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Kun Li
- College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Yuting Zhong
- College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Yougen Luo
- Department of Basic Medical Science, Jiangsu Vocational College of Medicine, Yancheng, China
- *Correspondence: Lichan Chen, ; Shu-Feng Zhou, ; Yougen Luo,
| | - Shu-Feng Zhou
- College of Chemical Engineering, Huaqiao University, Xiamen, China
- *Correspondence: Lichan Chen, ; Shu-Feng Zhou, ; Yougen Luo,
| | - Lichan Chen
- College of Chemical Engineering, Huaqiao University, Xiamen, China
- *Correspondence: Lichan Chen, ; Shu-Feng Zhou, ; Yougen Luo,
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18
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Pei R, Ma X, Han C, Liu Z, Cheng Z, Dong X. The valence conversion mechanism for Mo‐doped VO
2
films with enhanced thermochromic properties. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rui Pei
- School of Science Hubei University of Technology Wuhan 430068 China
| | - Xinguo Ma
- School of Science Hubei University of Technology Wuhan 430068 China
- Hubei Engineering Technology Research Center of Energy Photoelectric Device System Hubei University of Technology Wuhan 430068 China
| | - Changcun Han
- School of Science Hubei University of Technology Wuhan 430068 China
- Hubei Engineering Technology Research Center of Energy Photoelectric Device System Hubei University of Technology Wuhan 430068 China
| | - Zhifeng Liu
- School of Science Hubei University of Technology Wuhan 430068 China
| | - Zhengwang Cheng
- School of Science Hubei University of Technology Wuhan 430068 China
| | - Xiaoru Dong
- School of Science Hubei University of Technology Wuhan 430068 China
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19
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Long L, Pei R, Liu Y, Rao X, Wang Y, Zhou SF, Zhan G. 3D printing of recombinant Escherichia coli/Au nanocomposites as agitating paddles towards robust catalytic reduction of 4-nitrophenol. J Hazard Mater 2022; 423:126983. [PMID: 34464864 DOI: 10.1016/j.jhazmat.2021.126983] [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: 06/30/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Three-dimensional (3D) printing technology has received remarkable attention in manufacturing catalysts with tailored shapes and high precision, particularly facilitating catalyst recovery, maximizing heat/mass transfer, as well as enhancing catalytic performance. Herein, an engineered recombinant Escherichia coli strain (denoted as e-E. coli) with overexpressing metallothionein (a metal-binding protein) was explored to synthesize Au nanoparticles serving as both reducing and stabilizing agents. Then, the mixed inks containing e-E. coli/Au composite and biocompatible polymers (sodium alginate and gelatin) were extruded based on a direct ink writing method followed by chemical crosslinking to form robust 3D grids with square symmetry. To boost the mass transfer and minimize pressure drop, the monolith catalysts were assembled into agitating paddles and used for liquid-phase batch reactions (volume: 1 L). As such, the reaction solutions were mixed internally via the powered "catalytic paddles" with high mechanical strength, excellent reactivity, and easy recyclability, which could be reused at least 7 cycles without performance loss. Our work provides a novel strategy for the fabrication of supported Au catalysts, and the proof-of-concept "catalytic paddles" by 3D printing technology can be applied to other industrial solution-based reactions.
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Affiliation(s)
- Lu Long
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian 361021, PR China
| | - Rui Pei
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian 361021, PR China
| | - Ya Liu
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian 361021, PR China
| | - Xiaoping Rao
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian 361021, PR China
| | - Yuanpeng Wang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, 422 Siming South Road, Xiamen, Fujian 361005, PR China
| | - Shu-Feng Zhou
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian 361021, PR China.
| | - Guowu Zhan
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Avenue, Xiamen, Fujian 361021, PR China.
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20
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Cheng S, Pei R, Li J, Li B, Tang L, Yin T, Liu S. Atezolizumab compared to chemotherapy for first-line treatment in non-small cell lung cancer with high PD-L1 expression: a cost-effectiveness analysis from US and Chinese perspectives. Ann Transl Med 2021; 9:1481. [PMID: 34734033 PMCID: PMC8506791 DOI: 10.21037/atm-21-4294] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/16/2021] [Indexed: 01/13/2023]
Abstract
Background The IMpower110 trial revealed that atezolizumab treatment had significantly longer overall survival (OS) than chemotherapy in non-small cell lung cancer (NSCLC) patients with high-programmed death ligand 1 (PD-L1) expression. The purpose of the present study was to estimate the cost-effectiveness of atezolizumab versus platinum-based chemotherapy for first-line treatment in metastatic NSCLC with high PD-L1 expression, from the perspective of US and Chinese payers. Methods A partitioned survival model was constructed based on information from the IMpower110 clinical trial to estimate cost-effectiveness of atezolizumab versus chemotherapy as first-line treatment of metastatic NSCLC. Costs were estimated from US and Chinese payer perspectives. The impact of uncertainty was explored by performing one-way and probabilistic sensitivity analyses. Results In the United States, treatment with atezolizumab was estimated to increase 0.87 quality adjusted life years (QALYs) at a cost of $123,424/QALY. In China, the use of atezolizumab cost an additional $68,489 compared with chemotherapy, yielding an incremental cost-effectiveness ratio (ICER) of $78,936/QALY. Sensitivity analysis indicated that the cost of atezolizumab was the most influential factor in both countries. Conclusions In the United States, which had a willingness-to-pay (WTP) threshold of $100,000 to $150,000 per QALY, atezolizumab was a cost-effective strategy for first-line treatment in metastatic NSCLC patients with high PD-L1 expression when compared to chemotherapy. For China, with a WTP threshold of $33,210 per QALY, atezolizumab was not considered good-value treatment for NSCLC, and a price reduction of 52% appeared to be justified.
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Affiliation(s)
- Shuqiao Cheng
- Department of Pharmacy, Xiangya Hospital of Central South University, Changsha, China
| | - Rui Pei
- Department of Pharmacy, Xiangya Hospital of Central South University, Changsha, China
| | - Jianhuang Li
- Department of Oncology, Xiangya Hospital of Central South University, Changsha, China
| | - Bin Li
- Department of Oncology, Xiangya Hospital of Central South University, Changsha, China
| | - Lanhua Tang
- Department of Oncology, Xiangya Hospital of Central South University, Changsha, China
| | - Tao Yin
- Department of Pharmacy, Xiangya Hospital of Central South University, Changsha, China
| | - Shao Liu
- Department of Pharmacy, Xiangya Hospital of Central South University, Changsha, China
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21
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Kang Y, Cosme D, Pei R, Pandey P, Carreras-Tartak J, Falk EB. Purpose in Life, Loneliness, and Protective Health Behaviors During the COVID-19 Pandemic. Gerontologist 2021; 61:878-887. [PMID: 34125195 PMCID: PMC8344583 DOI: 10.1093/geront/gnab081] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Indexed: 12/20/2022] Open
Abstract
Background and Objectives Social distancing, while effective in slowing the spread of the coronavirus disease 2019 (COVID-19), can increase social isolation. The current preregistered study examined purpose in life as a psychological resource that may buffer against loneliness and increase intentions to engage in health-protective behaviors. Research Design and Methods During the COVID-19 pandemic, 517 adults (mean = 37.71, SD = 11.30; range = 19–73) reported their levels of purpose in life, current and prepandemic levels of loneliness, and degrees to which they intended to engage in behaviors known to prevent the spread of COVID-19. Results Across age, having a stronger sense of purpose in life was associated with lower loneliness, as well as greater intentions to engage in COVID-protective behaviors. Higher loneliness was associated with lower intentions to maintain social distance and engage in additional health promotion behaviors such as handwashing. However, this link was not present at higher levels of purpose in life. Older age was also associated with less loneliness, but not for individuals with lower levels of purpose in life. Discussion and Implications Results suggest that psychological resources such as purpose in life are associated with increased protective health behaviors. Furthermore, purpose in life may reduce loneliness and counteract the negative effects of stressors that diminish the willingness to engage in health-protective behaviors. Our data also highlight resilience among older individuals in times of isolation during a global pandemic.
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Affiliation(s)
- Yoona Kang
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Danielle Cosme
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Rui Pei
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Prateekshit Pandey
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - José Carreras-Tartak
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Emily B Falk
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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22
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Pei R, Jiang Y, Lei G, Chen J, Liu M, Liu S. Rhein Derivatives, A Promising Pivot? Mini Rev Med Chem 2021; 21:554-575. [PMID: 33167832 DOI: 10.2174/1389557520666201109120855] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/06/2020] [Accepted: 08/20/2020] [Indexed: 12/09/2022]
Abstract
Rhein, an anthraquinone derivative, has been employed widely, especially for the treatment of intractable diseases like diabetic nephropathy, arthritis, and cancer in a unique action mechanism. In the last decades, considerable efforts have been made in structural modification of rhein. This paper reviewed patents on pharmacological activity and therapeutic application of rhein and its derivatives from 1978 to 2018. Particularly, an analysis of patents was made, with the top 10 most valuable patents presented, and the interpretation of the legal status of patents was given. Given the properties of superior pharmacological activity, rich resources, cheap price, low toxicity, and mature extraction process, it is believed that an in-depth investigation on rhein and its derivatives is worth trying.
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Affiliation(s)
- Rui Pei
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Yueping Jiang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Guanghua Lei
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Jingjing Chen
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Manhua Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Shao Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China
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Pei R, Shi Y, Lv S, Dai T, Zhang F, Liu S, Wu B. Nivolumab vs Pembrolizumab for Treatment of US Patients With Platinum-Refractory Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma: A Network Meta-analysis and Cost-effectiveness Analysis. JAMA Netw Open 2021; 4:e218065. [PMID: 33956130 PMCID: PMC8103222 DOI: 10.1001/jamanetworkopen.2021.8065] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 03/09/2021] [Indexed: 12/12/2022] Open
Abstract
Importance Nivolumab and pembrolizumab are approved for treating platinum-refractory recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC). Physicians and patients are uncertain which drug is preferable, rendering a cost-effectiveness comparison between them necessary. Objective To evaluate the cost-effectiveness of nivolumab vs pembrolizumab in treating platinum-refractory R/M HNSCC. Design, Setting, and Participants Both the network meta-analysis and cost-effectiveness analysis included patients from the CheckMate 141 and the KEYNOTE 040 phase 3 randomized clinical trials. The Checkmate 141 trial started on May 1, 2014, with the present analysis based on a September 2017 data cutoff. The KEYNOTE 040 trial started on November 17, 2014, with the present analysis based on a May 15, 2017, data cutoff. A bayesian network meta-analysis that included 856 patients was carried out, and a cost-effectiveness analysis that included 487 patients was conducted by developing a partitioned survival model, both between February and November 2020. The robustness of the model was assessed via 1-way, 2-way, and probabilistic sensitivity analyses; subgroup analyses were included; and scenario analyses were conducted to investigate the associations of dosage adjustment of nivolumab with cost-effectiveness. Main Outcomes and Measures Life-years, quality-adjusted life-years (QALYs), overall costs, and incremental cost-effectiveness ratios (ICERs) were measured. Results In the cost-effectiveness analysis that included 487 patients, for US health care payers, when nivolumab was administered based on patient weight (3 mg/kg biweekly), at a willingness-to-pay (WTP) threshold of $100 000 per QALY, the probability of nivolumab being cost-effective compared with pembrolizumab was 56%; at a WTP threshold of $150 000 per QALY, the probability was 62%. When nivolumab was administered at a fixed dose of 240 mg biweekly or 480 mg monthly, at a WTP threshold of $100 000 per QALY, the probability of nivolumab being cost-effective was 42% to 45%; at a WTP threshold of $150 000 per QALY, the probability was 52% to 55%. Conclusions and Relevance Findings from this network meta-analysis and cost-effectiveness analysis suggest considering both WTP threshold and patient body weight when choosing between nivolumab and pembrolizumab for the treatment of patients with platinum-refractory R/M HNSCC. When the WTP threshold was $100 000 per QALY, for patients weighing less than 72 kg, nivolumab (3 mg/kg, biweekly) was considered cost-effective; otherwise, pembrolizumab was preferable. When the WTP threshold was $150 000 per QALY, nivolumab (3 mg/kg biweekly) was considered cost-effective for patients weighing less than 75 kg; otherwise, fixed-dose nivolumab (240 mg biweekly or 480 mg monthly) provided more cost savings.
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Affiliation(s)
- Rui Pei
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Hunan Institute of Pharmacy Practice and Clinical Research, Changsha, Hunan, China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yin Shi
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Hunan Institute of Pharmacy Practice and Clinical Research, Changsha, Hunan, China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shuhe Lv
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Hunan Institute of Pharmacy Practice and Clinical Research, Changsha, Hunan, China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Tingting Dai
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Hunan Institute of Pharmacy Practice and Clinical Research, Changsha, Hunan, China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Fengyu Zhang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Hunan Institute of Pharmacy Practice and Clinical Research, Changsha, Hunan, China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shao Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, China
- The Hunan Institute of Pharmacy Practice and Clinical Research, Changsha, Hunan, China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Bin Wu
- Medical Decision and Economic Group, Department of Pharmacy, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Pittman M, Habib MB, Dececchi TA, Larsson HCE, Pei R, Kaye TG, Norell MA, Brusatte SL, Xu X. Response to Serrano and Chiappe. Curr Biol 2021; 31:R372-R373. [PMID: 33905690 DOI: 10.1016/j.cub.2021.03.059] [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: 11/30/2022]
Abstract
In the recent study in Current Biology by Pei and colleagues1, we used two proxies - wing loading and specific lift - to reconstruct powered flight potential across the vaned feathered fossil pennaraptorans. The results recovered multiple origins of powered flight. We respectfully disagree with the criticism raised by Serrano and Chiappe2 that wing loading and specific lift, used in sequence, fail to discriminate between powered flight and gliding. We will explain this in reference to our original conservative approach.
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Affiliation(s)
- Michael Pittman
- Vertebrate Palaeontology Laboratory, Research Division for Earth and Planetary Science, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
| | - Michael B Habib
- Dinosaur Institute, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA
| | | | | | - Rui Pei
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, 100044, China
| | - Thomas G Kaye
- Foundation for Scientific Advancement, Sierra Vista, AZ 85650, USA
| | - Mark A Norell
- Division of Paleontology, American Museum of Natural History, New York City, NY 10024, USA
| | | | - Xing Xu
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, 100044, China
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Zhang A, Sun Y, Thomas D, Allen J, Good D, McCurry K, Pei R, Budev M. Humoral Risk Factors Associated to Allograft Dysfunction after Lung Transplantation: The Alert of Non-HLA Auto Antibody and HLA-Donor Specific Antibody (DSA) with Non-DSA HLA Antibody. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Tian L, Pei R, Zhong L, Ji Y, Zhou D, Zhou S. Enhanced targeting of 3D pancreatic cancer spheroids by aptamer-conjugated polymeric micelles with deep tumor penetration. Eur J Pharmacol 2020; 894:173814. [PMID: 33352182 DOI: 10.1016/j.ejphar.2020.173814] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/04/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022]
Abstract
Pancreatic cancer is a high degree malignant tumor which makes its diagnosis and treatment highly critical. The effect of conventional chemotherapy for pancreatic cancer is quite poor due to the low accumulation of the chemotherapeutic drugs at the tumor site. Therefore, enhancing the targeting efficiency and accumulation of the drug carrier at tumor site with subsequent release of drug within the effective time period is one of the key factors for successful targeted chemotherapy of pancreatic cancer. Our previous studies have demonstrated that aptamer can be a valid targeting moiety to guide the chemotherapeutic drug doxorubicin (DOX) to accumulate at the tumor tissue. Herein, the present study aims to further investigate the targeting efficiency as well as therapeutic efficacy of the drug delivery system comprised of aptamer-modified polymeric nano drug carrier encapsulated with DOX (DOX@PCL-b-PEO-Aptamer micelles). The in vitro cytotoxicity studies and laser confocal microscopy indicated that DOX@PCL-b-PEO-Aptamer micelles exhibited enhanced targeting and cytotoxic efficacy towards human pancreatic cancer cells (Panc-1 cells) as compared to free DOX and DOX-loaded PCL-b-PEO-NH2 micelles (DOX@PCL-b-PEO-NH2 micelles). Furthermore, the aptamer-decorated drug delivery system exhibited better tumor penetration into the three-dimensional (3D) spheroid of Panc-1 cells with successful release of DOX as compared to the drug delivery system without aptamer modification. Overall, this study suggests that the aptamer-modified polymeric micelles could be effectively employed for the targeted delivery of anticancer drug to treat pancreatic cancer in near future.
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Affiliation(s)
- Libing Tian
- Department of Bioengineering and Biotechnology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Rui Pei
- Department of Bioengineering and Biotechnology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Lijuan Zhong
- Department of Bioengineering and Biotechnology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Yuchao Ji
- Department of Bioengineering and Biotechnology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Danhua Zhou
- Department of Bioengineering and Biotechnology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China.
| | - Shufeng Zhou
- Department of Bioengineering and Biotechnology, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China.
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Pei R, Liang PF, Ye W, Li J, Ma JY, Zhou J. A novel mutation of LIM2 causes autosomal dominant membranous cataract in a Chinese family. Int J Ophthalmol 2020; 13:1512-1520. [PMID: 33078099 DOI: 10.18240/ijo.2020.10.02] [Citation(s) in RCA: 5] [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: 05/11/2020] [Accepted: 07/02/2020] [Indexed: 11/23/2022] Open
Abstract
AIM To identify mutations in the genes of a four-generation Chinese family with congenital membranous cataracts and investigate the morphologic changes and possible functional damage underlying the role of the mutant gene. METHODS Whole exome analysis of thirteen members of a four-generation pedigree affected with congenital membranous cataracts was performed; co-segregation analysis of identified variants was validated by Sanger sequencing. All members underwent detailed physical and complete eye examinations. The physical changes caused by the mutation were analyzed in silico through homology modeling. The lens fiber block from a patient was observed under a scanning electron microscope (SEM). Cell membrane proteins and cytoplasmic proteins from the human lenses donated by one patient with cataract in this family and from the dislocated lens resulted from the penetrating ocular trauma of a patient unrelated with this family were extracted, and the expression and localization of MP20 and Cx46 were detected by Western blot (WB) assay in these proteins. RESULTS A novel LIM2 heterozygous mutation (c.388C>T, p.R130C) was identified with congenital membranous cataracts inherited by an autosomal dominant (AD) pattern. Nystagmus and amblyopia were observed in all patients of this family, and exotropia and long axial length were observed in most patients. A/B ultrasound scan and ultrasound biomicroscopy revealed obvious thin crystalline lenses from 1.7 to 2.7 mm in central thickness in all cataract eyes. The bioinformatic analysis showed that the mutation was deleterious to the physiological function of LIM2-encoded MP20. Furthermore, by SEM, ultrastructure of the cataract nucleus showed that lens fiber cells (LFCs) remained morphologic characteristics of immature fiber cells, including flap cell surface with straight edges and lacking normal ball-and-socket joint boundaries, which implied that the differentiation of LFCs might be inhibited. Accumulation of MP20 and Cx46 in the cytoplasm was observed in the cytoplasm of the LFCs in human cataract lens. CONCLUSION We identify a novel heterozygous LIM2 (c.388C>T, p.R130C) mutation inherited by an AD pattern. This LIM2 mutation causes the abnormal sub-localization of MP20 and Cx46 in LFCs resulting in membranous cataracts.
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Affiliation(s)
- Rui Pei
- Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Peng-Fei Liang
- Department of Otolaryngology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Wei Ye
- Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Ji Li
- Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Ji-Yuan Ma
- Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Jian Zhou
- Department of Ophthalmology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
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Li J, Ye W, Xu W, Chang T, Zhang L, Ma J, Pei R, He M, Zhou J. Activation of autophagy inhibits epithelial to mesenchymal transition process of human lens epithelial cells induced by high glucose conditions. Cell Signal 2020; 75:109768. [PMID: 32896607 DOI: 10.1016/j.cellsig.2020.109768] [Citation(s) in RCA: 14] [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] [Received: 06/05/2020] [Revised: 08/27/2020] [Accepted: 08/31/2020] [Indexed: 01/11/2023]
Abstract
Subcapsular cataracts are common phenotype of diabetic cataracts, and abnormal lens epithelial cells (LECs) under the lens capsules have been considered to involve in the pathogenesis. Our previous studies have shown that the epithelial to mesenchymal transition (EMT), which is responsible for the LECs to lose their original polarity and tight junctions, occurs in a diabetic cataract mouse model. Autophagy is known to function in the EMT process in multiple tissues. However, the relationship between autophagy and EMT process in LECs has not yet been fully demonstrated. We found that high glucose retreatment reducing expression level of E-cadherin, an epithelial marker, but increasing that of α-smooth muscle actin (α-SMA), a mesenchymal marker, by Western blot and immunoflurence staining assays, and increased the cell migration by Transwell assay in human lens epithelial cell line HLE-B3. High glucose retreatment also led to impairment of autophagy, representing by downregulation of Beclin, LC3II/LC3I, and reducing the number of autophagosomes. Activation of autophagy by rapamycin could prevent high glucose-induced EMT. In addition, the levels of p62 and Snail were increased in high glucose-treated HLE-B3 cells, and their interactions were demonstrated by co-immunoprecipitation and immunoflurence staining, but all these changes were attenuated by application of rapamycin. These findings delineated a novel autophagy-mediated mechanism, p62 might mediate Snail underlying high glucose-induced EMT in LECs, suggesting a potential therapeutic approach for diabetic cataract by regulating autophagy.
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Affiliation(s)
- Ji Li
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China
| | - Wei Ye
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China
| | - Wenqin Xu
- The Orbital Disease Institute of the Third Medical Center of PLA General Hospital, 69 Yongding Road, Haidian District, 100039, Beijing, PR China
| | - Tianfang Chang
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China
| | - Luning Zhang
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China
| | - Jiyuan Ma
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China
| | - Rui Pei
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China
| | - Mengmei He
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China
| | - Jian Zhou
- Department of Ophthalmology, Eye Institute of China PLA, Xijing Hospital, The Fourth Military Medical University, No.127 Changle West Road, Xi'an, 710032, Shaanxi, PR China.
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Sha K, Lu Y, Zhang P, Pei R, Shi X, Fan Z, Chen L. Identifying a novel 5-gene signature predicting clinical outcomes in acute myeloid leukemia. Clin Transl Oncol 2020; 23:648-656. [PMID: 32776271 DOI: 10.1007/s12094-020-02460-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 07/11/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Acute myeloid leukemia (AML) is the most common type of acute leukemia and biologically heterogeneous diseases with poor prognosis. Thus, we aimed to identify prognostic markers to effectively predict the prognosis of AML patients and eventually guide treatment. METHODS Prognosis-associated genes were determined by Kaplan-Meier and multivariate analyses using the expression and clinical data of 173 AML patients from The Cancer Genome Atlas database and validated in an independent Oregon Health and Science University dataset. A prognostic risk score was computed based on a linear combination of 5-gene expression levels using the regression coefficients derived from the multivariate logistic regression model. The classification of AML was established by unsupervised hierarchical clustering of CALCRL, DOCK1, PLA2G4A, FCHO2 and LRCH4 expression levels. RESULTS High FCHO2 and LRCH4 expression was related to decreased mortality. While high CALCRL, DOCK1, PLA2G4A expression was associated with increased mortality. The risk score was predictive of increased mortality rate in AML patients. Hierarchical clustering analysis of the five genes discovered three clusters of AML patients. The cluster1 AML patients were associated with lower cytogenetics risk than cluster2 or 3 patients, and better prognosis than cluster3 patients (P values < 0.05 for all cases, fisher exact test or log-rank test). CONCLUSION The gene panel comprising CALCRL, DOCK1, PLA2G4A, FCHO2 and LRCH4 as well as the risk score may offer novel prognostic biomarkers and classification of AML patients to significantly improve outcome prediction.
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Affiliation(s)
- K Sha
- Department of Hematology, The Affiliated People's Hospital of Ningbo University, No. 251, East Baizhang Road, Ningbo, 315000, Zhejiang, China.
| | - Y Lu
- Department of Hematology, The Affiliated People's Hospital of Ningbo University, No. 251, East Baizhang Road, Ningbo, 315000, Zhejiang, China
| | - P Zhang
- Department of Hematology, The Affiliated People's Hospital of Ningbo University, No. 251, East Baizhang Road, Ningbo, 315000, Zhejiang, China
| | - R Pei
- Department of Hematology, The Affiliated People's Hospital of Ningbo University, No. 251, East Baizhang Road, Ningbo, 315000, Zhejiang, China
| | - X Shi
- Department of Hematology, The Affiliated People's Hospital of Ningbo University, No. 251, East Baizhang Road, Ningbo, 315000, Zhejiang, China
| | - Z Fan
- Department of Hematology, The Affiliated People's Hospital of Ningbo University, No. 251, East Baizhang Road, Ningbo, 315000, Zhejiang, China
| | - L Chen
- Department of Hematology, The Affiliated People's Hospital of Ningbo University, No. 251, East Baizhang Road, Ningbo, 315000, Zhejiang, China
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Pei R, Lauharatanahirun N, Cascio CN, O'Donnell MB, Shope JT, Simons-Morton BG, Vettel JM, Falk EB. Neural processes during adolescent risky decision making are associated with conformity to peer influence. Dev Cogn Neurosci 2020; 44:100794. [PMID: 32716849 PMCID: PMC7281781 DOI: 10.1016/j.dcn.2020.100794] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 03/12/2020] [Accepted: 05/03/2020] [Indexed: 12/14/2022] Open
Abstract
Adolescents’ neural responses to risky decisions may modulate their conformity to different types of peer influence. Neural activity in the anterior cingulate cortex (ACC) predicted conformity to risky peers while driving. Connectivity between VS and risk processing regions (including insula and ACC) predicted safer driving under risky influence.
Adolescents demonstrate both heightened sensitivity to peer influence and increased risk-taking. The current study provides a novel test of how these two phenomena are related at behavioral and neural levels. Adolescent males (N = 83, 16–17 years) completed the Balloon Analogue Risk Task (BART) in an fMRI scanner. One week later, participants completed a driving task in which they drove alone and with a safety- or risk-promoting peer passenger. Results showed that neural responses during BART were associated with participants’ behavioral conformity to safe vs. risky peer influence while later driving. First, the extent that neural activation in the anterior cingulate cortex (ACC) scaled with decision stakes in BART was associated with conformity to risky peer influence. Additionally, stake-modulated functional connectivity between ventral striatum (VS) and risk processing regions (including ACC and insula) was associated with safer driving under risky peer influence (i.e. resistance to risky peer influence), suggesting that connectivity between VS and ACC as well as insula may serve a protective role under risky peer influence. Together, these results suggest that adolescents’ neural responses to risky decision making may modulate their behavioral conformity to different types of peer influence on risk taking.
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Affiliation(s)
- Rui Pei
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA.
| | - Nina Lauharatanahirun
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA; U.S. Army Research Laboratory, Aberdeen Proving Ground, MD, USA
| | - Christopher N Cascio
- School of Journalism and Mass Communication, University of Wisconsin, Madison, WI, USA
| | - Matthew B O'Donnell
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA
| | - Jean T Shope
- Transportation Research Institute, University of Michigan, Ann Arbor, MI, USA
| | - Bruce G Simons-Morton
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Jean M Vettel
- U.S. Army Research Laboratory, Aberdeen Proving Ground, MD, USA
| | - Emily B Falk
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA.
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Zhang A, Sun Y, Thomas D, McCurry K, Pei R, Budev M. Humoral Risk Factors Associated to Allograft Dysfunction after Lung Transplantation: The Alert of Non-HLA Auto Antibody and HLA Donor Specific Antibody (DSA) with Non-DSA HLA Antibody. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Pei R, Fan L, Zhao F, Xiao J, Yang Y, Lai A, Zhou SF, Zhan G. 3D-Printed metal-organic frameworks within biocompatible polymers as excellent adsorbents for organic dyes removal. J Hazard Mater 2020; 384:121418. [PMID: 31818665 DOI: 10.1016/j.jhazmat.2019.121418] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [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: 07/18/2019] [Revised: 09/08/2019] [Accepted: 10/06/2019] [Indexed: 05/17/2023]
Abstract
Three-dimensional (3D) printing technique has received exceptional global attention as it can create a myriad of high-resolution architectures from digital models. In the present study, 3D-printed metal-organic frameworks (MOFs) were shaped into several geometries via direct ink writing, which overcomes the instability and high-pressure drop of powdery MOF during the flow of gas or liquid streams. The inclusion of a blend of calcium alginate and gelatin (CA-GE) as biocompatible binder allowed for easy writing and an enhanced mechanical property. Besides, it was found that the printing geometry (square, hexagon, and circle), MOF loading amount, and MOF size also greatly influenced the adsorptive performance. For instance, the methylene blue adsorption efficiency of CA-GE scaffolds without MOF was only 43.6%, while the printed MOF/CA-GE sample exhibited 99.8% adsorption efficiency at 20 min. Both the inherent microporous structure of MOFs and meso/macroporous structures of the 3D matrix contributed to the excellent adsorption properties towards a variety of organic dyes and their mixtures. Furthermore, the 3D-printed adsorbents can be easily regenerated in dilute acid solution and reused for at least 7 times without performance loss. In contrast, the powdery MOF can only be repeatedly used for at most 2 times.
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Affiliation(s)
- Rui Pei
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China
| | - Longlong Fan
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China
| | - Feigang Zhao
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China
| | - Jingran Xiao
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China
| | - Yucheng Yang
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China
| | - Aonan Lai
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China.
| | - Shu-Feng Zhou
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China.
| | - Guowu Zhan
- College of Chemical Engineering, Integrated Nanocatalysts Institute (INCI), Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, PR China.
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Kranzler EC, Schmälzle R, Pei R, Hornik RC, Falk EB. Message-Elicited Brain Response Moderates the Relationship Between Opportunities for Exposure to Anti-Smoking Messages and Message Recall. J Commun 2019; 69:589-611. [PMID: 32009669 PMCID: PMC6977712 DOI: 10.1093/joc/jqz035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 08/09/2019] [Accepted: 08/10/2019] [Indexed: 06/10/2023]
Abstract
Campaign success is contingent on adequate exposure; however, exposure opportunities (e.g., ad reach/frequency) are imperfect predictors of message recall. We hypothesized that the exposure-recall relationship would be contingent on message processing. We tested moderation hypotheses using 3 data sets pertinent to "The Real Cost" anti-smoking campaign: past 30-day ad recall from a rolling national survey of adolescents aged 13-17 (n = 5,110); ad-specific target rating points (TRPs), measuring ad reach and frequency; and ad-elicited response in brain regions implicated in social processing and memory encoding, from a separate adolescent sample aged 14-17 (n = 40). Average ad-level brain activation in these regions moderates the relationship between national TRPs and large-scale recall (p < .001), such that the positive exposure-recall relationship is more strongly observed for ads that elicit high levels of social processing and memory encoding in the brain. Findings advance communication theory by demonstrating conditional exposure effects, contingent on social and memory processes in the brain.
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Affiliation(s)
- Elissa C Kranzler
- Wharton Risk Management and Decision Processes Center, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Ralf Schmälzle
- College of Communication Arts and Sciences, Michigan State University, East Lansing, MI, 48824, USA
| | - Rui Pei
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Robert C Hornik
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Emily B Falk
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Psychology, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Wharton Marketing Department, University of Pennsylvania, Philadelphia, PA, 19104, USA
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Tang YR, Wang QY, Pei R, Xi YC, Dong LJ, Bai SL, Wan S. A study on the local corrosion behavior and mechanism of electroless Ni-P coatings under flow by using a wire beam electrode. RSC Adv 2019; 9:34214-34226. [PMID: 35529966 PMCID: PMC9074112 DOI: 10.1039/c9ra03814k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 05/21/2019] [Accepted: 10/07/2019] [Indexed: 11/27/2022] Open
Abstract
The local corrosion behavior and mechanism of Ni–P coatings in a 3.5 wt% sodium chloride solution with different flow speeds (0 m s−1, 0.5 m s−1, 1 m s−1) were investigated through a wire beam electrode (WBE) with morphological, elemental and electrochemical analyses as well as numerical simulations. It was found that the microstructure of the Ni–P coating was in the shape of broccoli and possessed satisfactory compactness and uniformity. The numerical simulations showed that the speed increased and the static pressure decreased at the local area. Combined with WBE, it was found that the average corrosion potential decreased at that area. The results indicated that the corrosion tendency and corrosion rate of the Ni–P coating were larger at higher speeds, and the corrosion resistance could be improved by the electroless Ni–P coating. WBE was helpful in revealing the local electrochemical information of the Ni–P coating. The local corrosion behavior and mechanism of Ni–P coatings in an NaCl solution with different flow speeds were investigated through a wire beam electrode with morphological, elemental and electrochemical analyses as well as numerical simulations.![]()
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Affiliation(s)
- Yi-Rong Tang
- School of Materials Science and Engineering, Southwest Petroleum University Chengdu 610500 China
| | - Qin-Ying Wang
- School of Materials Science and Engineering, Southwest Petroleum University Chengdu 610500 China
| | - Rui Pei
- School of Materials Science and Engineering, Southwest Petroleum University Chengdu 610500 China
| | - Yu-Chen Xi
- School of Materials Science and Engineering, Southwest Petroleum University Chengdu 610500 China
| | - Li-Jin Dong
- School of Materials Science and Engineering, Southwest Petroleum University Chengdu 610500 China
| | - Shu-Lin Bai
- College of Engineering, Peking University Beijing 100871 China
| | - Shanhong Wan
- Faculty of Engineering and Information Sciences, University of Wollongong Northfields Avenue Wollongong NSW 2522 Australia
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Bray RA, Nguyen J, Shih R, Ma H, Pei R, Dinh T, Lee JH. OR1 Impact of Class II Invariant Chain Peptide (CLIP) in HLA alloantibody recognition. Hum Immunol 2019. [DOI: 10.1016/j.humimm.2019.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zhang D, Pei R, Peng X, Xiang Q, Wang X. Environment‐Friendly Formation of High Energetic Nano‐Al/Fe
2
O
3
Bilayer by Aqueous Electrophoretic Deposition. Prop , Explos , Pyrotech 2019. [DOI: 10.1002/prep.201900025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Daixiong Zhang
- College of Environment and ResourcesChongqing Technology and Business University Chongqing 400067 P. R. China
- School of Materials Science and EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
| | - Rui Pei
- School of Materials Science and EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
| | - Xiofei Peng
- School of Materials Science and EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
| | - Qing Xiang
- Sichuan Fine Arts Institute Chongqing 401331 P. R. China
| | - Xia Wang
- School of Materials Science and EngineeringSouthwest Petroleum University Chengdu 610500 P. R. China
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Pei R, Schmälzle R, Kranzler EC, O'Donnell MB, Falk EB. Adolescents' Neural Response to Tobacco Prevention Messages and Sharing Engagement. Am J Prev Med 2019; 56:S40-S48. [PMID: 30661524 DOI: 10.1016/j.amepre.2018.07.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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] [Received: 01/07/2018] [Revised: 05/24/2018] [Accepted: 07/25/2018] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Interpersonal communication can reinforce media effects on health behavior. Recent studies have shown that brain activity in the medial prefrontal cortex during message exposure can predict message-consistent behavior change. Key next steps include examining the relationship between neural responses to ads and measures of interpersonal message retransmission that can be collected at scale. METHODS Neuroimaging, self-report, and automated linguistic measures were utilized to investigate the relationships between neural responses to tobacco prevention messages, sharing engagement, and smoking-relevant belief changes. Thirty-seven adolescent nonsmokers viewed 12 ads from the U.S. Food and Drug Administration's "The Real Cost" campaign during a functional magnetic resonance imaging scan session (2015-2016). Data were analyzed between 2016 and 2017. The extent that participants talked in detail about the main message of the ads, or sharing engagement, was measured through transcripts of participants' subsequent verbal descriptions using automated linguistic coding. Beliefs about the consequences of smoking were measured before and after the main experiment using surveys. RESULTS Increased brain activation in self- and value-related subregions of the medial prefrontal cortex during message exposure was associated with subsequent sharing engagement when participants verbally talked about the ads. In addition, sharing engagement was significantly associated with changes in participants' beliefs about the social consequences of smoking. CONCLUSIONS Neural activity in self- and value-related subregions of the medial prefrontal cortex during exposure to "The Real Cost" campaign was associated with subsequent sharing engagement, which in turn was related to social belief change. These results provide new insights into the link between neurocognitive responses to ads, the content of interpersonal sharing, and downstream health-relevant outcomes. SUPPLEMENT INFORMATION This article is part of a supplement entitled Fifth Anniversary Retrospective of "The Real Cost," the Food and Drug Administration's Historic Youth Smoking Prevention Media Campaign, which is sponsored by the U.S. Food and Drug Administration.
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Affiliation(s)
- Rui Pei
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Ralf Schmälzle
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania; College of Communication Arts and Sciences, Michigan State University, East Lansing, Michigan
| | - Elissa C Kranzler
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Matthew B O'Donnell
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Emily B Falk
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, Pennsylvania.
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Kranzler EC, Schmälzle R, O’Donnell MB, Pei R, Falk EB. Adolescent neural responses to antismoking messages, perceived effectiveness, and sharing intention. Media Psychol 2019; 22:323-349. [PMID: 30886543 PMCID: PMC6419746 DOI: 10.1080/15213269.2018.1476158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Health communication delivered via media channels can substantially influence adolescents' choices, and the effects of messages are amplified through interpersonal sharing. However, the underlying psychological and neurocognitive mechanisms that influence message effectiveness and likelihood of sharing are not well understood, especially among adolescents. Based on research in adults, we hypothesized and preregistered that message-induced neural activation in regions associated with self-reflection, social processing, and positive valuation would be related to greater perceived ad effectiveness and intentions to share messages. We focused on brain activity in meta-analytically defined regions associated with these three processes as 40 adolescent nonsmokers viewed advertisements from "The Real Cost" antismoking campaign. Perceived message effectiveness was positively associated with brain activity in the hypothesized social processing regions and marginally associated with brain activity in self-relevance regions, but not associated with brain activity in valuation regions. By contrast, intentions to share the messages were not associated with neural response in these 3 systems. In contrast to previous neuroimaging studies with adult subjects, our findings highlight the role of social cognition in adolescent processing of persuasive messages. We discuss the possibility that the mental processes responsive to effective and shareworthy messages may reflect developmental processes pertinent to media effects.
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Affiliation(s)
- Elissa C. Kranzler
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA
| | - Ralf Schmälzle
- College of Communication Arts and Sciences, Michigan State University, East Lansing, MI, USA
| | | | - Rui Pei
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA
| | - Emily B. Falk
- Annenberg School for Communication, University of Pennsylvania, Philadelphia, PA, USA
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Zhou GK, Zhang GY, Yuan ZN, Pei R, Liu DM. Has_circ_0008274 promotes cell proliferation and invasion involving AMPK/mTOR signaling pathway in papillary thyroid carcinoma. Eur Rev Med Pharmacol Sci 2018; 22:8772-8780. [PMID: 30575918 DOI: 10.26355/eurrev_201812_16644] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Circular RNAs (circRNAs) have been known as important regulators in tumorigenesis. Whether circRNAs are involved in papillary thyroid carcinoma (PTC) requires to be determined. In the present study, we aimed to investigate the expression and function of has_circ_0008274 in PTC. PATIENTS AND METHODS Tissue expression of has_circ_0008274 was evaluated in Gene Expression Omnibus datasets (GSE93522). Real-time PCR assays were used to detect the expression of has_circ_0008274 in human PTC tissues and cell lines. The correlation of has_circ_0008274 expression with clinicopathological factors was statistically analyzed. The MTT assay, colony formation assay, transwell assays were performed to analyze and compare cell viability and invasion. Western blot analysis was used to quantify the expression of AMPK/mTOR signaling pathway proteins. RESULTS We found that has_circ_0008274 was significantly upregulated in PTC tissues, and the level of has_circ_0008274 was negatively associated with TNM stage and lymph node metastasis. Loss-of-function assay indicated that knockdown of has_circ_0008274 suppressed PTC cells proliferation and invasion in vitro. Mechanistically, has_circ_0008274 could inhibit the activation of AMPK/mTOR signaling pathway, which was demonstrated by measuring the expression levels of p-AMPK and p-mTOR. CONCLUSIONS These results demonstrate that increased has_circ_0008274 expression modulates has_circ_0008274 to enhance PTC cells proliferation and invasion. Has_circ_0008274/ AMPK/mTOR axis may be a novel therapeutic candidate target in PTC treatment.
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Affiliation(s)
- G-K Zhou
- Department of Head and Neck Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China.
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Zhang A, Pei R, Thomas DM, Sun Y, McMichael J, Allen J, Winn E, Seifarth K, Budev M. OR3 Development of HLA de novo donor specific antibody is associated with preformed non-HLA autoantibodies and lung transplantation rejection. Hum Immunol 2018. [DOI: 10.1016/j.humimm.2018.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zhang A, Huidobro JP, Zaky Z, Good DJ, Zimmerman KH, Herlitz L, Pei R. P041 Renal allograft hyperacute rejection: Reviewing the role of hla and non–hla antibodies. Hum Immunol 2018. [DOI: 10.1016/j.humimm.2018.07.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Yang TB, Yan P, He M, Hong L, Pei R, Zhang ZM, Yi LZ, Yuan XY. Application of Subwindow Factor Analysis and Mass Spectral information for accurate alignment of non-targeted metabolic profiling. J Chromatogr A 2018; 1563:162-170. [DOI: 10.1016/j.chroma.2018.05.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/16/2018] [Accepted: 05/30/2018] [Indexed: 11/30/2022]
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Yin YL, Pei R, Zhou CF. Cranial morphology of Sinovenator changii (Theropoda: Troodontidae) on the new material from the Yixian Formation of western Liaoning, China. PeerJ 2018; 6:e4977. [PMID: 29942679 PMCID: PMC6015489 DOI: 10.7717/peerj.4977] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 03/26/2018] [Accepted: 05/24/2018] [Indexed: 11/20/2022] Open
Abstract
A new three-dimensionally preserved troodontid specimen consisting of most of the skull, partial mandibles and six articulated cervical vertebrae (PMOL-AD00102) from the Early Cretaceous Yixian Formation of Beipiao, western Liaoning, China is identified as Sinovenator changii on the basis of a surangular with a “T”-shaped cross-section. High-resolution computed tomographic data for the skull of this new specimen facilitated a detailed description of the cranial anatomy of S. changii. New diagnostic features of S. changii include a well-developed medial shelf on the jugal, a slender bar in the parasphenoid recess, a lateral groove on the pterygoid flange of the ectopterygoid, and the lateral surface of the anterior cervical vertebrae bearing two pneumatic foramina. Our new observation confirms that the braincase of Sinovenator is not as primitive as previously suggested, although it still shows an intermediate state between derived troodontids and non-troodontid paravians in having an initial stage of the subotic recess and the otosphenoidal crest. Additionally, this new specimen reveals some novel and valuable anatomical information of troodontids regarding the quadrate-quadratojugal articulation, the stapes, the epipterygoid and the atlantal ribs.
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Affiliation(s)
- Ya-Lei Yin
- Paleontological Institute, Shenyang Normal University, Shenyang, Liaoning, China
| | - Rui Pei
- Department of Earth Sciences, the University of Hong Kong, Hong Kong, China
| | - Chang-Fu Zhou
- College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong, China
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Zhang A, Pei R, Thomas D, Sun Y, Budev M. Important HLA and Non-HLA Pre-Transplant Determinantes Associated with the Development of De Novo Donor Specific Antibody After Lung Transplantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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He M, Yan P, Yang Z, Ye Y, Cao D, Hong L, Yang T, Pei R. Multi-analytical strategy for unassigned peaks using physical/mathematical separation, fragmental rules and retention index prediction: An example of sesquiterpene metabolites characterization in Cyperus rotundus. J Pharm Biomed Anal 2018; 154:476-485. [PMID: 29621725 DOI: 10.1016/j.jpba.2018.03.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 03/15/2018] [Accepted: 03/18/2018] [Indexed: 01/25/2023]
Abstract
Comprehensive two-dimensional gas chromatography- mass spectrometry (GC × GC-qMS) can provide powerful physical separation, signal enhancement, and spectral identification for analytes in complex samples. Unassigned peaks are commonly presented in the untargeted profile after a single run with EI-MS spectral matching and retention index (RI) confirmation. The procedure proposed in this work can be applied as a general method for suggesting or narrowing down the candidates of unassigned GC × GC-qMS peaks. To begin, peak purity detection and chemometric resolution are employed to acquire pure mass spectra. In addition, the fragmental rules and in-silico spectra from structures are available for annotating certain unassigned peaks with reference spectra that are not observed in commercial databases. Furthermore, the procedure proposed in this work allows for in silico RI calculation by means of random forest (RF) analysis based on the retention data under the same chromatographic conditions. The calculated RIs can aid in analysis when the RI information of peaks of interest is not available in retention data libraries. Using the proposed strategy, certain unassigned peaks can be attributed to sesquiterpene metabolites in an in-house database for Cyperus rotundus.
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Affiliation(s)
- Min He
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, People's Republic of China.
| | - Pan Yan
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Zhiyu Yang
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Ying Ye
- Guangzhou Analysis Center, Shimadzu Corporation, Guangzhou 411105, People's Republic of China
| | - Dongsheng Cao
- School of Pharmaceutical Sciences, Central South University, Changsha 410013, People's Republic of China
| | - Liang Hong
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Tianbiao Yang
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Rui Pei
- Department of Pharmaceutical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, People's Republic of China
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Sudmalis D, Gagliano MC, Pei R, Grolle K, Plugge CM, Rijnaarts HHM, Zeeman G, Temmink H. Fast anaerobic sludge granulation at elevated salinity. Water Res 2018; 128:293-303. [PMID: 29107914 DOI: 10.1016/j.watres.2017.10.038] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [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: 07/21/2017] [Revised: 09/28/2017] [Accepted: 10/18/2017] [Indexed: 05/07/2023]
Abstract
It is commonly accepted that high salt concentrations negatively affect microbial activity in biological wastewater treatment reactors such as upflow anaerobic sludge blanket (UASB) reactors. Microbial aggregation in such reactors is equally important. It is well documented that anaerobic granules, when exposed to high salinity become weak and disintegrate, causing wash-out, operational problems and decreasing process performance. In this research, the possibility of microbial granule formation from dispersed biomass was investigated at salinity levels of 5 and 20 g Na+/L. High removal efficiencies of soluble influent organics were achieved at both salinity levels and this was accompanied by fast and robust formation of microbial granules. The process was found to be stable for the entire operational period of 217 days. As far as we know this is the first time it has been demonstrated that stable granule formation is possible at a salinity level as high as 20 g Na+/L. Methanosaeta was identified as the dominant methanogen at both salinity levels. Streptococcus spp. and bacteria belonging to the family Lachnospiraceae were identified as the dominant microbial population at 5 and 20 and g Na+/L, respectively.
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Affiliation(s)
- D Sudmalis
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands.
| | - M C Gagliano
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - R Pei
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - K Grolle
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - C M Plugge
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - H H M Rijnaarts
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - G Zeeman
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
| | - H Temmink
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
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Pei R, Norell MA, Barta DE, Bever G, Pittman M, Xu X. Osteology of a New Late Cretaceous Troodontid Specimen from Ukhaa Tolgod, Ömnögovi Aimag, Mongolia. American Museum Novitates 2017. [DOI: 10.1206/3889.1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Rui Pei
- Department of Earth Sciences, the University of Hong Kong, and Division of Paleontology, American Museum of Natural History, New York
| | - Mark A. Norell
- Macaulay Family Curator, Division of Paleontology, American Museum of Natural History, New York
| | - Daniel E. Barta
- Richard Gilder Graduate School and Division of Paleontology, American Museum of Natural History, New York
| | - G.S. Bever
- Division of Paleontology, American Museum of Natural History, New York, and Center for Functional Anatomy & Evolution, Johns Hopkins University School of Medicine, Baltimore
| | - Michael Pittman
- Vertebrate Palaeontology Laboratory, Department of Earth Sciences, the University of Hong Kong
| | - Xing Xu
- Institute of Vertebrate Paleontology and Paleoanthropology, the Chinese Academy of Sciences, Beijing
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Li S, Chen D, Pei R, Lu Y, Zhang P, Ma J, Liu X, Du X, Sha K, Chen L, Cao J, Zhuang X, Wu J, Lin L, Fan Z, Ye P, Tang S, Zhang B, Shi X, Li K. L-Tetrahydropalmatine Induces Apoptosis in EU-4 Leukemia Cells by Down-Regulating X-Linked Inhibitor of Apoptosis Protein and Increases the Sensitivity Towards Doxorubicin. Curr Mol Med 2017; 17:236-245. [PMID: 28721806 DOI: 10.2174/1566524017666170718170000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 04/27/2017] [Revised: 07/13/2017] [Accepted: 07/17/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND L-Tetrahydropalmatine (L-THP) is a tetra-hydro protoberberine isoquinoline alkaloid. The phyto-compounds bearing isoquinoline alkaloids have been reported to show a potential effect against a number of human cancers cell lines including leukemia. We hypothesized that L-THP, being an isoquinoline alkaloid, could be a potential molecule against acute lymphoblastic leukemia (ALL), in this study, we evaluate L-THP against p53 deficient leukemia EU-4 cell lines in vitro. METHODS For the study, p53 null leukemia EU-4 cells were used and treated with LTHP. The extent of apoptosis and viability of cells were determined. Expression of apoptosis related proteins such as XIAP and MDM2 was done by western blot and PCR studies. The expression of MDM2 and XIAP was knocked down by small interfering RNA (siRNA). RESULTS Outcomes of the study suggested that L-THP caused p53-indipendent apoptosis mediated by XIAP in EU-4 cells. The treatment of L-THP caused a decrease in the levels of XIAP protein with increasing dose and time. L-THP caused down-regulation of XIAP protein via inhibiting the expression of MDM2 and involving proteasomedependent pathway. Also, the outcomes of experiments suggested increased sensitivity of leukemia cells towards doxorubicin due to the inhibition of XIAP by L-THP or by siRNA. CONCLUSION Findings of the study confirm that L-THP resulted in p53 independent apoptosis via down-regulating XIAP protein by inhibiting MDM2 associated with proteasome-dependent pathway and increased sensitivity of EU-4 cells against doxorubicin. L-THP caused activation of caspase and resulted in apoptosis, L-THP may be a novel molecule for inducing apoptosis specifically in p53 null leukemia EU-4 cells.
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Affiliation(s)
- S Li
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - D Chen
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - R Pei
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - Y Lu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - P Zhang
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - J Ma
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - X Liu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - X Du
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - K Sha
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - L Chen
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - J Cao
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - X Zhuang
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - J Wu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - L Lin
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - Z Fan
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - P Ye
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - S Tang
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - B Zhang
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - X Shi
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
| | - K Li
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo 315040. China
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49
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Pei R, Li Q, Meng Q, Norell MA, Gao KQ. New Specimens ofAnchiornis huxleyi(Theropoda: Paraves) from the Late Jurassic of Northeastern China. Bulletin of the American Museum of Natural History 2017. [DOI: 10.1206/0003-0090-411.1.1] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Rui Pei
- Department of Earth Sciences, the University of Hong Kong, Hong Kong; Division of Paleontology, American Museum of Natural History
| | - Quanguo Li
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing
| | | | - Mark A. Norell
- Division of Paleontology, American Museum of Natural History
| | - Ke-Qin Gao
- School of Earth and Space Sciences, Peking University, Beijing
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50
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Zhang Y, Wang J, Cheng H, Sun Y, Liu M, Wu Z, Pei R. Conditional control of suicide gene expression in tumor cells with theophylline-responsive ribozyme. Gene Ther 2016; 24:84-91. [DOI: 10.1038/gt.2016.78] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/06/2016] [Accepted: 11/11/2016] [Indexed: 12/18/2022]
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