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Zheng J, Liu X, Xiong Y, Meng Q, Li P, Zhang F, Liu X, Lin Z, Deng Q, Wen Z, Yu Z. AMXT-1501 targets membrane phospholipids against Gram-positive and -negative multidrug-resistant bacteria. Emerg Microbes Infect 2024; 13:2321981. [PMID: 38422452 PMCID: PMC10906134 DOI: 10.1080/22221751.2024.2321981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
The rapid proliferation of multidrug-resistant (MDR) bacterial pathogens poses a serious threat to healthcare worldwide. Carbapenem-resistant (CR) Enterobacteriaceae, which have near-universal resistance to available antimicrobials, represent a particularly concerning issue. Herein, we report the identification of AMXT-1501, a polyamine transport system inhibitor with antibacterial activity against Gram-positive and -negative MDR bacteria. We observed minimum inhibitory concentration (MIC)50/MIC90 values for AMXT-1501 in the range of 3.13-12.5 μM (2.24-8.93 μg /mL), including for methicillin-resistant Staphylococcus aureus (MRSA), CR Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. AMXT-1501 was more effective against MRSA and CR E. coli than vancomycin and tigecycline, respectively. Subinhibitory concentrations of AMXT-1501 reduced the biofilm formation of S. aureus and Enterococcus faecalis. Mechanistically, AMXT-1501 exposure damaged microbial membranes and increased membrane permeability and membrane potential by binding to cardiolipin (CL) and phosphatidylglycerol (PG). Importantly, AMXT-1501 pressure did not induce resistance readily in the tested pathogens.
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Affiliation(s)
- Jinxin Zheng
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Xiaoju Liu
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Yanpeng Xiong
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Qingyin Meng
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Peiyu Li
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Fan Zhang
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
- Department of Tuberculosis, Shenzhen Nanshan Center for Chronic Disease Control, Shenzhen, People’s Republic of China
| | - Xiaoming Liu
- Department of Gastroenterology, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, People’s Republic of China
| | - Zhiwei Lin
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Qiwen Deng
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Zewen Wen
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
| | - Zhijian Yu
- Department of Infectious Diseases and Shenzhen Key Lab of Endogenous Infection, Shenzhen Nanshan People’s Hospital and the 6th Affiliated Hospital of Shenzhen University Medical School, Shenzhen, People’s Republic of China
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Tian HH, Li YL, Wang XS, Huang XH, Zhang YY, Zhang ZC, Zhou DY, Qin L. Unraveling the relationship between aroma characteristics and lipid profile of abalone (Haliotis discus hannai) during seasonal fluctuation and thermal processing. Food Chem 2024; 447:138949. [PMID: 38484544 DOI: 10.1016/j.foodchem.2024.138949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/24/2024] [Accepted: 03/03/2024] [Indexed: 04/10/2024]
Abstract
Abalone, a highly sought-after aquatic product, possesses significant nutritional value. In this study, the relationship between aroma characteristics and lipid profile of abalone (Haliotis discus hannai) during seasonal fluctuation and thermal processing were profiled via volatolomics and lipidomics. 46 aroma compounds and 371 lipids were identified by HS-SPME-GC-MS and UPLC-Q-Extractive Orbitrap-MS, respectively. Multivariate statistical analysis indicated that carbonyls (aldehydes and ketones) and alcohols were the characteristic aroma compounds of abalone. The fluctuations in the aroma compound and lipid composition of abalone were consistent with the seasonal variation, especially seawater temperature. In addition, based on the correlation analysis, it was found that carbonyls (aldehydes and ketones) and alcohols had a positive correlation with phospholipids (lysophosphatidylethanolamines and lysophosphatidylcholines), while a negative correlation was observed with fatty acyls. These findings suggested that the effect of seasonal variations on the aroma changes of abalone might achieved by modulating the lipids composition of abalone.
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Affiliation(s)
- He-He Tian
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China; College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Yu-Lian Li
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Xu-Song Wang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Xu-Hui Huang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Yu-Ying Zhang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Zi-Chun Zhang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Da-Yong Zhou
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Lei Qin
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China.
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3
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Liu X, Li Z, OuYang B, Wang W, Lan D, Wang Y. Lipidomics analysis of rice bran during storage unveils mechanisms behind dynamic changes in functional lipid molecular species. Food Chem 2024; 447:138946. [PMID: 38498952 DOI: 10.1016/j.foodchem.2024.138946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/13/2024] [Accepted: 03/03/2024] [Indexed: 03/20/2024]
Abstract
Rice bran, recognized for its rich lipids and health-beneficial bioactive compounds, holds considerable promise in applications such as rice bran oil production. However, its susceptibility to lipid hydrolysis and oxidation during storage presents a significant challenge. In response, we conducted an in-depth metabolic profiling of rice bran over a storage period of 14 days. We focused on the identification of bioactive compounds and functional lipid species (25 acylglycerols and 53 phospholipids), closely tracking their dynamic changes over time. Our findings revealed significant reductions in these lipid molecular species, highlighting the impact of rancidity processes. Furthermore, we identified 19 characteristic lipid markers and elucidated that phospholipid and glycerolipid metabolism were key metabolic pathways involved. By shedding light on the mechanisms driving lipid degradation in stored rice bran, our study significantly advanced the understanding of lipid stability. These information provided valuable insights for countering rancidity and optimizing rice bran preservation strategies.
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Affiliation(s)
- Xuan Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhong Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Bo OuYang
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China..
| | - Weifei Wang
- Sericultural & Argi-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products Processing, No. 133 Yiheng Street, Dongguanzhuang Road, Tianhe District, Guangzhou 510610, China.
| | - Dongming Lan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Yonghua Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Youmei Institute of Inteligent Bio-manufacturing Co., Ltd, Foshan, Guangdong 528200, China.
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4
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Deveshwar N, Yao J, Han M, Dwork N, Shen X, Ljungberg E, Caverzasi E, Cao P, Henry R, Green A, Larson PEZ. Quantification of the in vivo brain ultrashort-T 2* component in healthy volunteers. Magn Reson Med 2024; 91:2417-2430. [PMID: 38291598 DOI: 10.1002/mrm.30013] [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: 04/28/2023] [Revised: 12/14/2023] [Accepted: 12/29/2023] [Indexed: 02/01/2024]
Abstract
PURPOSE Recent work has shown MRI is able to measure and quantify signals of phospholipid membrane-bound protons associated with myelin in the human brain. This work seeks to develop an improved technique for characterizing this brain ultrashort-T 2 ∗ $$ {\mathrm{T}}_2\ast $$ component in vivo accounting forT 1 $$ {\mathrm{T}}_1 $$ weighting. METHODS Data from ultrashort echo time scans from 16 healthy volunteers with variable flip angles (VFA) were collected and fitted into an advanced regression model to quantify signal fraction, relaxation time, and frequency shift of the ultrashort-T 2 ∗ $$ {\mathrm{T}}_2\ast $$ component. RESULTS The fitted components show intra-subject differences of different white matter structures and significantly elevated ultrashort-T 2 ∗ $$ {\mathrm{T}}_2\ast $$ signal fraction in the corticospinal tracts measured at 0.09 versus 0.06 in other white matter structures and significantly elevated ultrashort-T 2 ∗ $$ {\mathrm{T}}_2\ast $$ frequency shift in the body of the corpus callosum at- $$ - $$ 1.5 versus- $$ - $$ 2.0 ppm in other white matter structures. CONCLUSION The significantly different measured components and measuredT 1 $$ {\mathrm{T}}_1 $$ relaxation time of the ultrashort-T 2 ∗ $$ {\mathrm{T}}_2\ast $$ component suggest that this method is picking up novel signals from phospholipid membrane-bound protons.
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Affiliation(s)
- Nikhil Deveshwar
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA
- UC Berkeley - UCSF Graduate Program in Bioengineering, San Francisco, California, USA
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, California, USA
| | - Jingwen Yao
- UC Berkeley - UCSF Graduate Program in Bioengineering, San Francisco, California, USA
| | - Misung Han
- UC Berkeley - UCSF Graduate Program in Bioengineering, San Francisco, California, USA
| | - Nicholas Dwork
- Departments of Biomedical Informatics and Radiology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Xin Shen
- UC Berkeley - UCSF Graduate Program in Bioengineering, San Francisco, California, USA
| | - Emil Ljungberg
- Department of Medical Radiation Physics, Lund University, Lund, Sweden
| | - Eduardo Caverzasi
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA
| | - Peng Cao
- Department of Diagnostic Radiology, Hong Kong University, Hong Kong, China
| | - Roland Henry
- Department of Neurology, University of California, San Francisco, San Francisco, California, USA
| | - Ari Green
- Department of Neurology, University of California, San Francisco, San Francisco, California, USA
| | - Peder E Z Larson
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA
- UC Berkeley - UCSF Graduate Program in Bioengineering, San Francisco, California, USA
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5
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Huang R, Song H, Wang X, Shen H, Li S, Guan X. Fatty acids-modified liposomes for encapsulation of bioactive peptides: Fabrication, characterization, storage stability and in vitro release. Food Chem 2024; 440:138139. [PMID: 38134830 DOI: 10.1016/j.foodchem.2023.138139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 11/29/2023] [Accepted: 12/02/2023] [Indexed: 12/24/2023]
Abstract
The fragile membranes of liposomes limit their application by the food industry. In this study, we hypothesized that interactions between fatty acids with different chain lengths and phospholipids might enhance liposome stability. Decanoic acid modified liposomes (Lipo-DA) and stearic acid modified liposomes (Lipo-SA) were fabricated for encapsulation of hydrophilic peptides. Fluorescence spectroscopy and FTIR analysis showed molecular interactions existed between alkyl chains and phospholipids, resulting in greater compactness and hydrophobicity of the membranes in Lipo-DA and Lipo-SA. This led to a reduction in melting point characterized by differential scanning calorimetry analysis. Lipo-DA and Lipo-SA could delay the release of hydrophilic peptides compared with unmodified liposomes in simulated digestion. Moreover, Lipo-DA showed better stability during storage, while Lipo-SA exhibited precipitation, resulting in the lowest peptide retention. Our study showed that decanoic acid is suitable to enhance the stability of liposomes, although this approach has yet to be tested in food products.
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Affiliation(s)
- Ruihan Huang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Hongdong Song
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Xinyue Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Huijie Shen
- Weifang Vocational College, Weifang, Shandong, China
| | - Sen Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China
| | - Xiao Guan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai 200093, China.
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Şimşek C, Tav Şimşek D, Özüçelik DN, Sümer E, Hacıhasanoğlu E, Sarıkaya S. Experımental Study: The Effect Of 20% Intralıpıd Emulsıon Therapy In Cerebral Ischemıc Reperfusıon. Brain Inj 2024; 38:489-498. [PMID: 38420951 DOI: 10.1080/02699052.2024.2318596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 02/09/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND This experimental study was conducted to investigate the effect of 20% Intralipid Emulsion (ILE) treatment on Cerebral Ischemia Reperfusion Injury (CIRI) after reperfusion in acute ischemic stroke. METHODS In this experimental study, seven rats without any intervention (control group), seven rats (sham group) for which CIRI was created after the common carotid artery was ligated for 2 hours, and seven rats who were treated with 20% ILE after CIRI (CIRI + ILE group) were sacrificed after 24 hours, and histopathological findings were investigated. RESULTS In rats that were not treated after CIRI, 52.7% had level-1, 32.7% had level-2. and 14.5% had level-3. histopathological findings. While 72.2% of the rats treated with ILE had level-1 and 27.8% had level-2 findings, no level-3 histopathological findings were detected in any of the rats. While no signs of coagulative necrosis, spongiosis of surrounding tissue and polymorphonuclear leukocytes were observed histopathological in any of the rats given ILE, there was no macrophages finding in 85.6% of the rats. ILE treatment also reduced the histopathological findings of eosinophilic neurons, astrogliosis, neovascularization, vascular thrombosis and mononuclear inflammatory cells. CONCLUSION This study showed that 20% ILE treatment reduces the histopathological damage seen in cerebral ischemia and CIRI.
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Affiliation(s)
- Cem Şimşek
- Emergency Department, Yeditepe Üniversity, İstanbul, Turkey
| | - Dijan Tav Şimşek
- Emergency Department, Sancaktepe Prof. Dr. İlhan Varank Training and Research Hospital, İstanbul, Turkey
| | - Doğaç Niyazi Özüçelik
- Health Science Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
- UNEC Social Work and Social Innovation Center, Baku, Azerbaijan
| | - Engin Sümer
- Faculty of Medicine Experimental Research Center, Yeditepe University İstanbul, Turkey
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Correa Y, Ravel M, Imbert M, Waldie S, Clifton L, Terry A, Roosen‐Runge F, Lagerstedt JO, Moir M, Darwish T, Cárdenas M, Del Giudice R. Lipid exchange of apolipoprotein A-I amyloidogenic variants in reconstituted high-density lipoprotein with artificial membranes. Protein Sci 2024; 33:e4987. [PMID: 38607188 PMCID: PMC11010956 DOI: 10.1002/pro.4987] [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: 11/06/2023] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024]
Abstract
High-density lipoproteins (HDLs) are responsible for removing cholesterol from arterial walls, through a process known as reverse cholesterol transport. The main protein in HDL, apolipoprotein A-I (ApoA-I), is essential to this process, and changes in its sequence significantly alter HDL structure and functions. ApoA-I amyloidogenic variants, associated with a particular hereditary degenerative disease, are particularly effective at facilitating cholesterol removal, thus protecting carriers from cardiovascular disease. Thus, it is conceivable that reconstituted HDL (rHDL) formulations containing ApoA-I proteins with functional/structural features similar to those of amyloidogenic variants hold potential as a promising therapeutic approach. Here we explored the effect of protein cargo and lipid composition on the function of rHDL containing one of the ApoA-I amyloidogenic variants G26R or L174S by Fourier transformed infrared spectroscopy and neutron reflectometry. Moreover, small-angle x-ray scattering uncovered the structural and functional differences between rHDL particles, which could help to comprehend higher cholesterol efflux activity and apparent lower phospholipid (PL) affinity. Our findings indicate distinct trends in lipid exchange (removal vs. deposition) capacities of various rHDL particles, with the rHDL containing the ApoA-I amyloidogenic variants showing a markedly lower ability to remove lipids from artificial membranes compared to the rHDL containing the native protein. This effect strongly depends on the level of PL unsaturation and on the particles' ultrastructure. The study highlights the importance of the protein cargo, along with lipid composition, in shaping rHDL structure, contributing to our understanding of lipid-protein interactions and their behavior.
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Affiliation(s)
- Yubexi Correa
- Biofilm – Research Center for Biointerfaces and Department of Biomedical Science, Faculty of Health and SocietyMalmö UniversityMalmöSweden
| | - Mathilde Ravel
- Biofilm – Research Center for Biointerfaces and Department of Biomedical Science, Faculty of Health and SocietyMalmö UniversityMalmöSweden
| | - Marie Imbert
- Biofilm – Research Center for Biointerfaces and Department of Biomedical Science, Faculty of Health and SocietyMalmö UniversityMalmöSweden
| | - Sarah Waldie
- Biofilm – Research Center for Biointerfaces and Department of Biomedical Science, Faculty of Health and SocietyMalmö UniversityMalmöSweden
| | - Luke Clifton
- ISIS Pulsed Neutron and Muon Source, Science and Technology Facilities CouncilRutherford Appleton Laboratory, Harwell Science and Innovation CampusDidcotUK
| | - Ann Terry
- MAX IV LaboratoryCoSAXS Beamline, Lund UniversityLundSweden
| | - Felix Roosen‐Runge
- Biofilm – Research Center for Biointerfaces and Department of Biomedical Science, Faculty of Health and SocietyMalmö UniversityMalmöSweden
| | - Jens O. Lagerstedt
- Islet Cell Exocytosis, Department of Clinical Sciences in Malmö, Lund University Diabetes CentreLund UniversityMalmöSweden
- Rare Endocrine Disorders, Research and Early DevelopmentNovo NordiskCopenhagenDenmark
| | - Michael Moir
- National Deuteration FacilityAustralian Nuclear Science and Technology Organization (ANSTO)Lucas HeightsNew South WalesAustralia
| | - Tamim Darwish
- National Deuteration FacilityAustralian Nuclear Science and Technology Organization (ANSTO)Lucas HeightsNew South WalesAustralia
- Faculty of Science and TechnologyUniversity of CanberraCanberraAustralian Capital TerritoryAustralia
| | - Marité Cárdenas
- Biofilm – Research Center for Biointerfaces and Department of Biomedical Science, Faculty of Health and SocietyMalmö UniversityMalmöSweden
- Ikerbasque, Basque Foundation for ScienceBilbaoSpain
- Biofisika Institute (University of Basque Country and Consejo Superior de Investigaciones Científicas (UPV/EHU, CSIC))LeioaSpain
| | - Rita Del Giudice
- Biofilm – Research Center for Biointerfaces and Department of Biomedical Science, Faculty of Health and SocietyMalmö UniversityMalmöSweden
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Babot M, Boulard Y, Agouda S, Pieri L, Fieulaine S, Bressanelli S, Gervais V. Oligomeric assembly of the C-terminal and transmembrane region of SARS-CoV-2 nsp3. J Virol 2024; 98:e0157523. [PMID: 38483167 PMCID: PMC11019948 DOI: 10.1128/jvi.01575-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/22/2024] [Indexed: 04/17/2024] Open
Abstract
As for all single-stranded, positive-sense RNA (+RNA) viruses, intracellular RNA synthesis relies on extensive remodeling of host cell membranes that leads to the formation of specialized structures. In the case of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coronavirus causing COVID-19, endoplasmic reticulum membranes are modified, resulting in the formation of double-membrane vesicles (DMVs), which contain the viral dsRNA intermediate and constitute membrane-bound replication organelles. The non-structural and transmembrane protein nsp3 is a key player in the biogenesis of DMVs and, therefore, represents an interesting antiviral target. However, as an integral transmembrane protein, it is challenging to express for structural biology. The C-terminus of nsp3 encompasses all the membrane-spanning, -interacting, and -remodeling elements. By using a cell-free expression system, we successfully produced the C-terminal region of nsp3 (nsp3C) and reconstituted purified nsp3C into phospholipid nanodiscs, opening the way for structural studies. Negative-stain transmission electron microscopy revealed the presence of nsp3C oligomers very similar to the region abutting and spanning the membrane on the cytosolic side of DMVs in a recent subtomogram average of the SARS-CoV-2 nsp3-4 pore (1). AlphaFold-predicted structural models fit particularly well with our experimental data and support a pore-forming hexameric assembly. Altogether, our data give unprecedented clues to understand the structural organization of nsp3, the principal component that shapes the molecular pore that spans the DMVs and is required for the export of RNA in vivo. IMPORTANCE Membrane remodeling is at the heart of intracellular replication for single-stranded, positive-sense RNA viruses. In the case of coronaviruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), this leads to the formation of a network of double-membrane vesicles (DMVs). Targeting DMV biogenesis offers promising prospects for antiviral therapies. This requires a better understanding of the molecular mechanisms and proteins involved. Three non-structural proteins (nsp3, nsp4, and nsp6) direct the intracellular membrane rearrangements upon SARS-CoV-2 infection. All of them contain transmembrane helices. The nsp3 component, the largest and multi-functional protein of the virus, plays an essential role in this process. Aiming to understand its structural organization, we used a cell-free protein synthesis assay to produce and reconstitute the C-terminal part of nsp3 (nsp3C) including transmembrane domains into phospholipid nanodiscs. Our work reveals the oligomeric organization of one key player in the biogenesis of SARS-CoV-2 DMVs, providing basis for the design of future antiviral strategies.
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Affiliation(s)
- Marion Babot
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Yves Boulard
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Samira Agouda
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Laura Pieri
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Sonia Fieulaine
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Stéphane Bressanelli
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Virginie Gervais
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
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9
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Koornneef A, Vanshylla K, Hardenberg G, Rutten L, Strokappe NM, Tolboom J, Vreugdenhil J, Boer KFD, Perkasa A, Blokland S, Burger JA, Huang WC, Lovell JF, van Manen D, Sanders RW, Zahn RC, Schuitemaker H, Langedijk JPM, Wegmann F. CoPoP liposomes displaying stabilized clade C HIV-1 Env elicit tier 2 multiclade neutralization in rabbits. Nat Commun 2024; 15:3128. [PMID: 38605096 PMCID: PMC11009251 DOI: 10.1038/s41467-024-47492-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 03/27/2024] [Indexed: 04/13/2024] Open
Abstract
One of the strategies towards an effective HIV-1 vaccine is to elicit broadly neutralizing antibody responses that target the high HIV-1 Env diversity. Here, we present an HIV-1 vaccine candidate that consists of cobalt porphyrin-phospholipid (CoPoP) liposomes decorated with repaired and stabilized clade C HIV-1 Env trimers in a prefusion conformation. These particles exhibit high HIV-1 Env trimer decoration, serum stability and bind broadly neutralizing antibodies. Three sequential immunizations of female rabbits with CoPoP liposomes displaying a different clade C HIV-1 gp140 trimer at each dosing generate high HIV-1 Env-specific antibody responses. Additionally, serum neutralization is detectable against 18 of 20 multiclade tier 2 HIV-1 strains. Furthermore, the peak antibody titers induced by CoPoP liposomes can be recalled by subsequent heterologous immunization with Ad26-encoded membrane-bound stabilized Env antigens. Hence, a CoPoP liposome-based HIV-1 vaccine that can generate cross-clade neutralizing antibody immunity could potentially be a component of an efficacious HIV-1 vaccine.
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Affiliation(s)
| | | | | | - Lucy Rutten
- Janssen Vaccines & Prevention, Leiden, The Netherlands
| | | | | | | | | | | | - Sven Blokland
- Janssen Vaccines & Prevention, Leiden, The Netherlands
| | - Judith A Burger
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, the Netherlands
| | - Wei-Chiao Huang
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, USA
| | - Jonathan F Lovell
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, USA
| | | | - Rogier W Sanders
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, Amsterdam, the Netherlands
| | - Roland C Zahn
- Janssen Vaccines & Prevention, Leiden, The Netherlands
| | | | - Johannes P M Langedijk
- Janssen Vaccines & Prevention, Leiden, The Netherlands.
- ForgeBio, Amsterdam, The Netherlands.
| | - Frank Wegmann
- Janssen Vaccines & Prevention, Leiden, The Netherlands.
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10
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Ananchenko A, Gao RY, Dehez F, Baenziger JE. State-dependent binding of cholesterol and an anionic lipid to the muscle-type Torpedo nicotinic acetylcholine receptor. Commun Biol 2024; 7:437. [PMID: 38600247 PMCID: PMC11006840 DOI: 10.1038/s42003-024-06106-8] [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: 08/28/2023] [Accepted: 03/25/2024] [Indexed: 04/12/2024] Open
Abstract
The ability of the Torpedo nicotinic acetylcholine receptor (nAChR) to undergo agonist-induced conformational transitions requires the presence of cholesterol and/or anionic lipids. Here we use recently solved structures along with multiscale molecular dynamics simulations to examine lipid binding to the nAChR in bilayers that have defined effects on nAChR function. We examine how phosphatidic acid and cholesterol, lipids that support conformational transitions, individually compete for binding with phosphatidylcholine, a lipid that does not. We also examine how the two lipids work synergistically to stabilize an agonist-responsive nAChR. We identify rapidly exchanging lipid binding sites, including both phospholipid sites with a high affinity for phosphatidic acid and promiscuous cholesterol binding sites in the grooves between adjacent transmembrane α-helices. A high affinity cholesterol site is confirmed in the inner leaflet framed by a key tryptophan residue on the MX α-helix. Our data provide insight into the dynamic nature of lipid-nAChR interactions and set the stage for a detailed understanding of the mechanisms by which lipids facilitate nAChR function at the neuromuscular junction.
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Affiliation(s)
- Anna Ananchenko
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada
| | - Rui Yan Gao
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada
| | - François Dehez
- CNRS, LPCT, Université de Lorraine, F-54000 Nancy, France.
| | - John E Baenziger
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.
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11
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Lodge S, Litton E, Gray N, Ryan M, Millet O, Fear M, Raby E, Currie A, Wood F, Holmes E, Wist J, Nicholson JK. Stratification of Sepsis Patients on Admission into the Intensive Care Unit According to Differential Plasma Metabolic Phenotypes. J Proteome Res 2024; 23:1328-1340. [PMID: 38513133 PMCID: PMC11002934 DOI: 10.1021/acs.jproteome.3c00803] [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: 11/20/2023] [Revised: 02/15/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024]
Abstract
Delayed diagnosis of patients with sepsis or septic shock is associated with increased mortality and morbidity. UPLC-MS and NMR spectroscopy were used to measure panels of lipoproteins, lipids, biogenic amines, amino acids, and tryptophan pathway metabolites in blood plasma samples collected from 152 patients within 48 h of admission into the Intensive Care Unit (ICU) where 62 patients had no sepsis, 71 patients had sepsis, and 19 patients had septic shock. Patients with sepsis or septic shock had higher concentrations of neopterin and lower levels of HDL cholesterol and phospholipid particles in comparison to nonsepsis patients. Septic shock could be differentiated from sepsis patients based on different concentrations of 10 lipids, including significantly lower concentrations of five phosphatidylcholine species, three cholesterol esters, one dihydroceramide, and one phosphatidylethanolamine. The Supramolecular Phospholipid Composite (SPC) was reduced in all ICU patients, while the composite markers of acute phase glycoproteins were increased in the sepsis and septic shock patients within 48 h admission into ICU. We show that the plasma metabolic phenotype obtained within 48 h of ICU admission is diagnostic for the presence of sepsis and that septic shock can be differentiated from sepsis based on the lipid profile.
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Affiliation(s)
- Samantha Lodge
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
| | - Edward Litton
- Intensive
Care Unit, Fiona Stanley Hospital, Murdoch, WA 6150, Australia
- Intensive
Care Unit, St John of God Hospital, Subiaco, WA 6009, Australia
- School
of Medicine, University of Western Australia, Crawley, WA 6009, Australia
| | - Nicola Gray
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
| | - Monique Ryan
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
| | - Oscar Millet
- Precision
Medicine and Metabolism Laboratory, CIC
bioGUNE, Parque Tecnológico
de Bizkaia, Bld. 800, Derio 48160, Spain
| | - Mark Fear
- Burn
Injury Research Unit, School of Biomedical Sciences, University of Western Australia, Perth, WA 6009, Australia
- Fiona
Wood Foundation, Perth, WA 6150, Australia
| | - Edward Raby
- Department
of Infectious Diseases, Fiona Stanley Hospital, Murdoch, WA 6150, Australia
| | - Andrew Currie
- School
of Medical, Molecular & Forensic Sciences, Murdoch University, Perth, WA 6150, Australia
- Centre
for Molecular Medicine & Innovative Therapeutics, Murdoch University, Perth, WA 6150, Australia
- Wesfarmers
Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, WA 6009, Australia
| | - Fiona Wood
- Burn
Injury Research Unit, School of Biomedical Sciences, University of Western Australia, Perth, WA 6009, Australia
- Fiona
Wood Foundation, Perth, WA 6150, Australia
- Burns
service of Western Australia, WA Department
of Health, Murdoch, WA 6150, Australia
| | - Elaine Holmes
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
- Institute
of Global Health Innovation, Faculty of Medicine, Imperial College London, Level 1, Faculty Building, South Kensington Campus, London SW7 2NA, U.K.
| | - Julien Wist
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Center
for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA 6150, Australia
- Chemistry
Department, Universidad del Valle, Cali 76001, Colombia
- Department of Metabolism, Digestion and
Reproduction, Faculty of Medicine, Imperial
College London, Sir Alexander
Fleming Building, South Kensington, London SW7 2AZ, U.K.
| | - Jeremy K. Nicholson
- Australian
National Phenome Center, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, WA6150, Australia
- Department of Metabolism, Digestion and
Reproduction, Faculty of Medicine, Imperial
College London, Sir Alexander
Fleming Building, South Kensington, London SW7 2AZ, U.K.
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12
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Hirschbeck SS, Lindberg ET, Jang JH, Jacob MR, Lazar Cantrell KL, Do TD. Investigating a Novel Neurodegenerative Disease Toxic Mechanism Involving Lipid Binding Specificity of Amyloid Oligomers. ACS Chem Neurosci 2024; 15:1523-1532. [PMID: 38488720 DOI: 10.1021/acschemneuro.3c00830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
Exploring the mechanisms underlying the toxicity of amyloid oligomers (AOs) presents a significant opportunity for discovering cures and developing treatments for neurodegenerative diseases. Recently, using a combination of ion mobility spectrometry-mass spectrometry (IMS-MS) and X-ray crystallography (XRC), we showed that the peptide KVKVLWDVIEV, which is the G95W mutant of αB-Crystallin (90-100) and abbreviated as G6W, self-assembles up to a dodecamer that structurally resembles lipid transport proteins. The glycine to tryptophan mutation promotes not only larger oligomers and enhanced cytotoxicity in brain slices than the wild type but also a narrow hydrophobic cavity suitable for fatty acid or phospholipid binding. Here, we determine the plausibility of a novel cytotoxic mechanism where the G6W's structural motif could perturb lipid homeostasis by determining its lipid binding selectivity and specificity. We show that the G6W oligomers have a strong affinity toward unsaturated phospholipids with a preference toward phospholipids containing 16-C alkyl chains. Molecular dynamics simulations demonstrate how an unsaturated, 16-C phospholipid fits tightly inside and outside G6W's hydrophobic cavity. This binding is exclusive to the G6W peptide, as other amyloid oligomers with different atomic structures, including its wildtype αB-Crystallin (90-100) and several superoxide dismutase 1 (SOD1) peptides that are known to self-assemble into amyloid oligomers (SOD1P28K and SOD1WG-GW), do not experience the same strong binding affinity. While the existing chaperone-lipid hypothesis on amyloid toxicity suggests amyloid-lipid complexes perforate cell membranes, our work provides a new outlook, indicating that soluble amyloid oligomers disrupt lipid homeostasis via selective protein-ligand interactions. The toxic mechanisms may arise from the formation of unique amyloid oligomer structures assisted by lipid ligands or impaired lipid transports.
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Affiliation(s)
- Sarah S Hirschbeck
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Edward T Lindberg
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Joshua H Jang
- Department of Chemistry, Westmont College, Santa Barbara, California 93108, United States
| | - MaKenna R Jacob
- Department of Chemistry, Westmont College, Santa Barbara, California 93108, United States
| | | | - Thanh D Do
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
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13
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Maruyama C, Uchiyama M, Umezawa A, Tokunaga A, Yasuda A, Chibai K, Fukuda C, Ichiki R, Kameyama N, Shinohara M. A Cross-Sectional Pilot Study on Association of Ready-to-Eat and Processed Food Intakes with Metabolic Factors, Serum Trans Fat and Phospholipid Fatty Acid Compositions in Healthy Japanese Adults. Nutrients 2024; 16:1032. [PMID: 38613065 PMCID: PMC11013905 DOI: 10.3390/nu16071032] [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: 02/19/2024] [Revised: 03/21/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Frequently consuming processed and ready-to-eat (RTE) foods is regarded as unhealthy, but evidence on the relationships with circulating metabolic parameters is lacking. Japanese residents of a metropolitan area, 20 to 50 years of age, were studied in terms of anthropometric and biochemical parameters, including circulating trans fat and serum phospholipid fatty acid levels. Processed foods, except drinks and dairy items, were categorized according to requirements for additional ingredients and cooking before eating. Processed and RTE foods were divided according to fat and/or oil content into non-fatty or fatty foods. The participants were grouped into tertiles based on the energy percent (En%) derived from fatty-RTE foods. Fatty-RTE En% showed negative associations with fish, soybean and soybean products, dairy, eggs, vegetables, seaweed/mushrooms/konjac, fruit and non-oily seasonings reflecting lower dietary fiber, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and mineral and vitamin intakes, while the associations with fat/oil, confectionaries, and sweet beverages were positive. Fatty-RTE En% consumption was positively associated with alkaline phosphatase, leucine aminopeptidase, direct bilirubin, elaidic acid, and C18:2 but inversely associated with HDL cholesterol, C15:0, C17:0, EPA, and DHA. A higher fatty-RTE food intake was suggested to contribute to unbalanced nutrient intakes, as reflected in lipid metabolic parameters. Further large-scale studies are needed to evaluate the quality and impacts of RTE foods.
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Affiliation(s)
- Chizuko Maruyama
- Division of Food and Nutrition, Graduate School of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan;
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Miya Uchiyama
- Division of Food and Nutrition, Graduate School of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan;
| | - Ariko Umezawa
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Aoi Tokunaga
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Akari Yasuda
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Kanako Chibai
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Chieko Fukuda
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Rina Ichiki
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Noriko Kameyama
- Department of Food and Nutrition, Faculty of Human Sciences and Design, Japan Women’s University, Tokyo 112-8681, Japan; (A.U.); (N.K.)
| | - Masakazu Shinohara
- The Integrated Center for Mass Spectrometry, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan;
- Division of Molecular Epidemiology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
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14
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Li LJ, Lu R, Rawal S, Birukov A, Weir NL, Tsai MY, Wu J, Chen Z, Zhang C. Maternal plasma phospholipid polyunsaturated fatty acids in early pregnancy and thyroid function throughout pregnancy: a longitudinal study. Am J Clin Nutr 2024; 119:1065-1074. [PMID: 38408725 DOI: 10.1016/j.ajcnut.2024.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/02/2024] [Accepted: 02/21/2024] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND Evidence has indicated that polyunsaturated fatty acids (PUFAs)-enriched diet could reduce inflammation because of thyroid autoimmunity in vivo, and therefore, enhance thyroid function. OBJECTIVES We investigated whether early pregnancy plasma phospholipid PUFAs could benefit maternal thyroid function across pregnancy, which is critical to fetal brain development and growth in pregnancy. METHODS Within the National Institute of Child Health and Human Development Fetal Growth Studies-Singleton Cohort, we collected plasma samples longitudinally from 214 subjects [107 with gestational diabetes mellitus (GDM) matched with 107 controls] with a singleton pregnancy. We measured 11 PUFAs at early pregnancy (10-14 wk) and 5 thyroid biomarkers at 10-14, 15-26, 23-31, and 33-39 wk, including free thyroxine (fT4), free triiodothyronine (fT3), thyroid-stimulating hormone, antithyroid peroxidase, and antithyroglobulin. Associations of PUFAs with thyroid function biomarkers and relative risk (RR) of gestational hypothyroidism (GHT) during pregnancy were assessed using generalized linear mixed models and modified Poisson regression, respectively. RESULTS After sample weighting because of subjects with GDM over-representing in the analytic sample with biomarkers, eicosapentaenoic acid (EPA) at early pregnancy was associated with a reduction of 0.24 pmol/L (95% confidence intervals: -0.31, -0.16) in fT3 across gestation per standard deviation (SD) increment, whereas docosahexaenoic acid (DHA) at early pregnancy was associated with an increment of 0.04 ng/dL (0.02, 0.05) in fT4 across gestation per SD increment. Furthermore, EPA and docosatetraenoic acid (DTA) were associated with lower risks of persistent GHT (EPA-RR: 0.13; 0.06, 0.28; DTA-RR: 0.24; 0.13, 0.44) per SD increment. All significant associations remained robust in sensitivity analysis and multiple testing. CONCLUSIONS Certain plasma phospholipid PUFAs were associated with optimal levels of thyroid biomarkers and even lower risk of GHT throughout pregnancy, which might be potentially targeted for maternal thyroid regulation in early pregnancy. CLINICAL TRIAL REGISTRY This trial was registered at https://beta. CLINICALTRIALS gov/study/NCT00912132?distance=50&term=NCT00912132&rank=1 as NCT00912132.
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Affiliation(s)
- Ling-Jun Li
- Global Centre for Asian Women's Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of O&G, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NUS Bia-Echo Asia Centre for Reproductive Longevity and Equality (ACRLE), Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Ruijin Lu
- Division of Biostatistics, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States
| | - Shristi Rawal
- Department of Clinical and Preventive Nutrition Sciences, School of Health Professions, Rutgers Global Health Institute, Rutgers University, NJ, United States
| | - Anna Birukov
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Natalie L Weir
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States
| | - Michael Y Tsai
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States
| | - Jing Wu
- Glotech Inc., Bethesda, MD, United States
| | - Zhen Chen
- Division of Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Cuilin Zhang
- Global Centre for Asian Women's Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of O&G, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NUS Bia-Echo Asia Centre for Reproductive Longevity and Equality (ACRLE), Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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15
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Benariba MA, Hannachi K, Rhouati A, Al-Ansi W, Cai R, Zhou N. Enhanced sensitivity in Staphylococcus aureus detection: Unveiling the impact of lipid composition on the performance of carboxyfluorescein (CF)-Loaded liposome-based assay. Talanta 2024; 270:125577. [PMID: 38141467 DOI: 10.1016/j.talanta.2023.125577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 12/10/2023] [Accepted: 12/19/2023] [Indexed: 12/25/2023]
Abstract
Liposomes have emerged as versatile nanocarriers, finding applications not only in drug delivery but also in pathogen detection and diagnostics. This study aimed to enhance the sensitivity of liposomes to Staphylococcus aureus by investigating the impact of lipid composition on liposomes loaded with 5(6)-carboxyfluorescein (CF). Liposomes were fabricated using various concentrations of cholesterol (10-40 mol%) combined with saturated phospholipids. Dynamic light scattering results revealed that higher cholesterol concentrations led to reduced liposome size, CF release (%), and entrapment efficiency (%). Liposome sensitivity towards S. aureus was evaluated by using CF-loaded liposomes with and without aptamer insertion. Liposomes with a higher cholesterol content (40 mol%) exhibited a strong ability to detect low bacterial concentrations down to 5 × 102 CFU/mL without relying solely on specific receptor-ligand recognition. However, functionalizing the liposome with an aptamer further improved the specificity and sensitivity of S. aureus detection at even lower concentrations, down to 80 CFU/mL, in the wide range of 80-107 CFU/mL. This study highlights the potential for optimizing the lipid composition of liposomes to improve their sensitivity for pathogen detection, particularly when combined with aptamer-based strategies.
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Affiliation(s)
- Mohamed Aimene Benariba
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China; Bioengineering Laboratory, Ecole Nationale Supérieure de Biotechnologie, Ville Universitaire Ali Mendjeli, BP E66 25100, Constantine, Algeria
| | - Kanza Hannachi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China
| | - Amina Rhouati
- Bioengineering Laboratory, Ecole Nationale Supérieure de Biotechnologie, Ville Universitaire Ali Mendjeli, BP E66 25100, Constantine, Algeria
| | - Waleed Al-Ansi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China
| | - Rongfeng Cai
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Nandi Zhou
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China.
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16
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Lin L, Tang Y, Ning K, Li X, Hu X. Investigating the causal associations between metabolic biomarkers and the risk of kidney cancer. Commun Biol 2024; 7:398. [PMID: 38561482 PMCID: PMC10984917 DOI: 10.1038/s42003-024-06114-8] [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: 01/09/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024] Open
Abstract
Metabolic reprogramming plays an important role in kidney cancer. We aim to investigate the causal effect of 249 metabolic biomarkers on kidney cancer from population-based data. This study extracts data from previous genome wide association studies with large sample size. The primary endpoint is random-effect inverse variance weighted (IVW). After completing 249 times of two-sample Mendelian randomization analysis, those significant metabolites are included for further sensitivity analysis. According to a strict Bonferrion-corrected level (P < 2e-04), we only find two metabolites that are causally associated with renal cancer. They are lactate (OR:3.25, 95% CI: 1.84-5.76, P = 5.08e-05) and phospholipids to total lipids ratio in large LDL (low density lipoprotein) (OR: 0.63, 95% CI: 0.50-0.80, P = 1.39e-04). The results are stable through all the sensitivity analysis. The results emphasize the central role of lactate in kidney tumorigenesis and provide novel insights into possible mechanism how phospholipids could affect kidney tumorigenesis.
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Affiliation(s)
- Lede Lin
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yaxiong Tang
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kang Ning
- Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
| | - Xiang Li
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
| | - Xu Hu
- Department of Urology and Institute of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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17
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Ong HX, Traini D, Young PM. Liposomes for Inhalation. J Aerosol Med Pulm Drug Deliv 2024; 37:100-110. [PMID: 38640446 DOI: 10.1089/jamp.2024.29112.hxo] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2024] Open
Abstract
Inhalation of liposomes formulated with phospholipids similar to endogenous lung surfactants and lipids offers biocompatibility and versatility within the pulmonary medicine field to treat a range of diseases such as lung cancer, cystic fibrosis and lung infections. Manipulation of the physicochemical properties of liposomes enables innovative design of the carrier to meet specific delivery, release and targeting requirements. This delivery system offers several benefits: improved pharmacokinetics with reduced toxicity, enhanced therapeutic efficacy, increased delivery of poorly soluble drugs, taste masking, biopharmaceutics degradation protection and targeted cellular therapy. This section provides an overview of liposomal formulation and delivery, together with their applications for different disease states in the lung.
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Affiliation(s)
- Hui Xin Ong
- Woolcock Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Daniela Traini
- Woolcock Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Paul M Young
- CEO, Ab Inito Pharma, Macquarie Park, NSW, Australia
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18
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Wong KL, Siu KL. Pulmonary Complications in Premature Infants Using a Beractant or Poractant for Respiratory Distress Syndrome: A Retrospective Cohort Study. Am J Perinatol 2024; 41:641-648. [PMID: 35098502 DOI: 10.1055/a-1754-0943] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
OBJECTIVE Premature infants are at the risk of developing respiratory distress syndrome (RDS). Beractants and poractants are two commonly used natural surfactants. This retrospective cohort study aims to compare the incidence of pulmonary complications between beractant and poractant treatment groups. STUDY DESIGN This study evaluated 29 patients treated with beractant and 49 patients treated with poractant. The primary outcome was the incidence of air leak syndrome (ALS) and pulmonary hemorrhage. Secondary outcomes included mortality and pulmonary outcomes, such as mechanical ventilation duration, oxygen dependence duration, fraction of inspired oxygen, and mean airway pressure (MAP) requirement. Logistic regression analyses were conducted to identify independent risk factors for significant primary outcomes. RESULTS No significant difference was found in the demographics between the two groups. A significantly higher incidence of pulmonary hemorrhage was observed in the poractant group (14.3 vs. 0.0%, p = 0.038). The difference in the incidence of ALS between the groups was insignificant (p = 0.536). Logistic regression for the incidence of pulmonary hemorrhage identified coagulopathy as the only significant independent risk factor (odds ratio 39.855, 95% confidence interval [2.912-545.537]; p = 0.006). Secondary outcomes in both treatment groups were similar, except that patients in the poractant group had a higher MAP before surfactant therapy (9 vs. 8 cmH2O, p < 0.001). CONCLUSION This study showed a significantly higher incidence of pulmonary hemorrhage in the poractant group. Coagulopathy was identified as an independent risk factor for pulmonary hemorrhage. Future long-term prospective studies are essential to establish the temporal and causal relationships between coagulopathy and pulmonary hemorrhage in premature infants receiving surfactant therapy for RDS; hence, there is the need for a screening protocol before surfactant administration. KEY POINTS · A higher incidence of pulmonary hemorrhage was found in the poractant group.. · Coagulopathy was the only significant risk factor that was related to the incidence of pulmonary hemorrhage.. · A screening protocol might be useful to avoid pulmonary hemorrhage in infants receiving surfactant..
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Affiliation(s)
- Kin Lok Wong
- Department of Paediatrics, Queen Elizabeth Hospital, Kowloon, Hong Kong SAR
| | - Kiu Lok Siu
- Department of Paediatrics, Queen Elizabeth Hospital, Kowloon, Hong Kong SAR
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19
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Feng S, Sheng J, Yu J, Lin Y, Shao P. Enhancing acid stability of citral through internal structure modulation in nanostructured lipid carriers with solid lipids and phospholipids. Food Res Int 2024; 182:114148. [PMID: 38519178 DOI: 10.1016/j.foodres.2024.114148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/05/2024] [Accepted: 02/17/2024] [Indexed: 03/24/2024]
Abstract
In this current study, the internal structure of nanostructured lipid carriers was modulated by phospholipids (lecithin PC, hydrogenated soybean phospholipid HPC) and solid lipids to achieve stable encapsulation of citral. The presence of high melting point HPC could construct α-crystalline type with more lattice defects and effectively inhibit β-ization. The HPC group could maintain the particle size at 155.9-186.9 nm, the polydispersity index (PDI) at 0.182-0.321, the Zeta potential at -57.58 mV to -49.35 mV and the retention rate of citral at 91.33-98.49 % in the acidic environments of 2 mM and 20 mM hydrochloric acid solutions. The recrystallization index (RI) of NLC increased with the number of solid lipid ester bonds (from 3.57 % to 16.58 % in the PC group and from 0.82 % to 12.47 % in the HPC group). The results illustrated that the number of solid lipid ester bonds and the melting point of phospholipids affected crystallinity of the lipid matrix and thus the stability of encapsulated citral. Hydrogenated phospholipid with high melting points was more beneficial in stabilizing citral. The present study improved the acidic stability of citral and provided a new thought for the application of citral in acidic beverages.
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Affiliation(s)
- Simin Feng
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China; Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, People's Republic of China
| | - Jialu Sheng
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China
| | - Jiahao Yu
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China; Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, People's Republic of China
| | - Yang Lin
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China; Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, People's Republic of China
| | - Ping Shao
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China; Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, People's Republic of China; Eco-Industrial Innovation Institute ZJUT, Quzhou 324000, Zhejiang, People's Republic of China.
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20
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Wibel R, van Hoogevest P, Drescher S. The role of phospholipids in drug delivery formulations - Recent advances presented at the Researcher's Day 2023 Conference of the Phospholipid Research Center Heidelberg. Eur J Pharm Biopharm 2024; 197:114215. [PMID: 38350530 DOI: 10.1016/j.ejpb.2024.114215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 02/15/2024]
Abstract
This Focus on Meetings contribution summarizes recent advances in the research on phospholipids and their applications for drug delivery and analytical purposes that have been presented at the hybrid Researcher's Day 2023 Conference of the Phospholipid Research Center (PRC), held on July 3-5, 2023, in Bad Dürkheim, Germany. The PRC is a non-profit organization focused on expanding and sharing scientific and technological knowledge of phospholipids in pharmaceutical and other applications. This is accomplished by, e.g., funding doctoral and postdoctoral research projects. The progress made with these projects is presented at the Researcher's Day Conference every two years. Four main topics were presented and discussed in various lectures: (1) formulation of phospholipid-based nanocarriers, (2) therapeutic applications of phospholipids and phospholipid-based nanocarriers, (3) phospholipids as excipients in oral, dermal, and parenteral dosage forms, and (4) interactions of phospholipids and phospholipid-based vesicles in biological environment and their use as analytical platforms.
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Affiliation(s)
- Richard Wibel
- Phospholipid Research Center, Im Neuenheimer Feld 515, 69120 Heidelberg, Germany
| | - Peter van Hoogevest
- Phospholipid Research Center, Im Neuenheimer Feld 515, 69120 Heidelberg, Germany
| | - Simon Drescher
- Phospholipid Research Center, Im Neuenheimer Feld 515, 69120 Heidelberg, Germany.
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21
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Hikage R, Sekiya Y, Sawasato K, Nishiyama KI. CdsA, a CDP-diacylglycerol synthase involved in phospholipid and glycolipid MPIase biosynthesis, possesses multiple initiation codons. Genes Cells 2024; 29:347-355. [PMID: 38351722 DOI: 10.1111/gtc.13104] [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: 01/08/2024] [Revised: 01/25/2024] [Accepted: 02/01/2024] [Indexed: 04/04/2024]
Abstract
CdsA is a CDP-diacylglycerol synthase essential for phospholipid and glycolipid MPIase biosynthesis, and therefore for growth. The initiation codon of CdsA has been assigned as "TTG," while methionine at the 37th codon was reported to be an initiation codon in the original report. Since a vector containing the open reading frame starting with "TTG" under a controllable promoter complemented the cdsA knockout, "TTG" could function as an initiation codon. However, no evidence supporting that this "TTG" is the sole initiation codon has been reported. We determined the initiation codon by examining the ability of mutants around the N-terminal region to complement cdsA mutants. Even if the "TTG" was substituted with a stop codon, the clear complementation was observed. Moreover, the clones with multiple mutations of stop codons complemented the cdsA mutant up to the 37th codon, indicating that cdsA possesses multiple codons that can function as initiation codons. We constructed an experimental system in which the chromosomal expression of cdsA can be analyzed. By means of this system, we found that the cdsA mutant with substitution of "TTG" with a stop codon is fully functional. Thus, we concluded that CdsA contains multiple initiation codons.
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Affiliation(s)
- Runa Hikage
- Department of Applied Biological Chemistry, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Yusei Sekiya
- Department of Applied Biological Chemistry, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Katsuhiro Sawasato
- Department of Applied Biological Chemistry, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Ken-Ichi Nishiyama
- Department of Applied Biological Chemistry, Faculty of Agriculture, Iwate University, Morioka, Japan
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22
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Shin J, Park J, Jeong J, Lam JH, Qiu X, Wu D, Kim K, Lee JY, Robinson CV, Hyun J, Katritch V, Kim KP, Cho Y. Constitutive activation mechanism of a class C GPCR. Nat Struct Mol Biol 2024; 31:678-687. [PMID: 38332368 DOI: 10.1038/s41594-024-01224-7] [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: 02/22/2023] [Accepted: 01/09/2024] [Indexed: 02/10/2024]
Abstract
Class C G-protein-coupled receptors (GPCRs) are activated through binding of agonists to the large extracellular domain (ECD) followed by rearrangement of the transmembrane domains (TMDs). GPR156, a class C orphan GPCR, is unique because it lacks an ECD and exhibits constitutive activity. Impaired GPR156-Gi signaling contributes to loss of hearing. Here we present the cryo-electron microscopy structures of human GPR156 in the Go-free and Go-coupled states. We found that an endogenous phospholipid molecule is located within each TMD of the GPR156 dimer. Asymmetric binding of Gα to the phospholipid-bound GPR156 dimer restructures the first and second intracellular loops and the carboxy-terminal part of the elongated transmembrane 7 (TM7) without altering dimer conformation. Our findings reveal that GPR156 is a transducer for phospholipid signaling. Constant binding of abundant phospholipid molecules and the G-protein-induced reshaping of the cytoplasmic face provide a basis for the constitutive activation of GPR156.
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Affiliation(s)
- Jinwoo Shin
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Junhyeon Park
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - Jieun Jeong
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin, Republic of Korea
| | - Jordy Homing Lam
- Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, USA
- Bridge Institute and Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA, USA
| | - Xingyu Qiu
- Department of Chemistry, University of Oxford, Oxford, UK
- Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford, UK
| | - Di Wu
- Department of Chemistry, University of Oxford, Oxford, UK
- Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford, UK
| | - Kuglae Kim
- Department of Pharmacy, Yonsei University, Incheon, Republic of Korea
| | - Joo-Youn Lee
- Therapeutics and Biotechnology Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Carol V Robinson
- Department of Chemistry, University of Oxford, Oxford, UK
- Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford, UK
| | - Jaekyung Hyun
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Vsevolod Katritch
- Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, USA
- Bridge Institute and Michelson Center for Convergent Biosciences, University of Southern California, Los Angeles, CA, USA
- Center for New Technologies in Drug Discovery and Development, University of Southern California, Los Angeles, CA, USA
- Department of Chemistry, University of Southern California, Los Angeles, CA, USA
| | - Kwang Pyo Kim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin, Republic of Korea.
- Department of Biomedical Science and Technology, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.
| | - Yunje Cho
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea.
- Department of Medical Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea.
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23
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Tian Y, Jellinek MJ, Mehta K, Seok SM, Kuo SH, Lu W, Shi R, Lee R, Lau GW, Kemper JK, Zhang K, Ford DA, Wang B. Membrane phospholipid remodeling modulates nonalcoholic steatohepatitis progression by regulating mitochondrial homeostasis. Hepatology 2024; 79:882-897. [PMID: 36999536 PMCID: PMC10544743 DOI: 10.1097/hep.0000000000000375] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 03/01/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND AND AIMS NASH, characterized by inflammation and fibrosis, is emerging as a leading etiology of HCC. Lipidomics analyses in the liver have shown that the levels of polyunsaturated phosphatidylcholine (PC) are decreased in patients with NASH, but the roles of membrane PC composition in the pathogenesis of NASH have not been investigated. Lysophosphatidylcholine acyltransferase 3 (LPCAT3), a phospholipid (PL) remodeling enzyme that produces polyunsaturated PLs, is a major determinant of membrane PC content in the liver. APPROACH AND RESULTS The expression of LPCAT3 and the correlation between its expression and NASH severity were analyzed in human patient samples. We examined the effect of Lpcat3 deficiency on NASH progression using Lpcat3 liver-specific knockout (LKO) mice. RNA sequencing, lipidomics, and metabolomics were performed in liver samples. Primary hepatocytes and hepatic cell lines were used for in vitro analyses. We showed that LPCAT3 was dramatically suppressed in human NASH livers, and its expression was inversely correlated with NAFLD activity score and fibrosis stage. Loss of Lpcat3 in mouse liver promotes both spontaneous and diet-induced NASH/HCC. Mechanistically, Lpcat3 deficiency enhances reactive oxygen species production due to impaired mitochondrial homeostasis. Loss of Lpcat3 increases inner mitochondrial membrane PL saturation and elevates stress-induced autophagy, resulting in reduced mitochondrial content and increased fragmentation. Furthermore, overexpression of Lpcat3 in the liver ameliorates inflammation and fibrosis of NASH. CONCLUSIONS These results demonstrate that membrane PL composition modulates the progression of NASH and that manipulating LPCAT3 expression could be an effective therapeutic for NASH.
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Affiliation(s)
- Ye Tian
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Matthew J. Jellinek
- Department of Biochemistry and Molecular Biology, and Center for Cardiovascular Research, Saint Louis University, St. Louis, MO, USA
| | - Kritika Mehta
- Department of Biochemistry, School of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Sun Mi Seok
- Department of Molecular and Integrative Physiology, School of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Shanny Hsuan Kuo
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Wei Lu
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Ruicheng Shi
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | | | - Gee W. Lau
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Jongsook Kim Kemper
- Department of Molecular and Integrative Physiology, School of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Kai Zhang
- Department of Biochemistry, School of Molecular and Cellular Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - David A. Ford
- Department of Biochemistry and Molecular Biology, and Center for Cardiovascular Research, Saint Louis University, St. Louis, MO, USA
| | - Bo Wang
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Division of Nutritional Sciences, College of Agricultural, Consumer and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, USA
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24
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Lale AS, Sirvi A, Debaje S, Patil S, Sangamwar AT. Supersaturable diacyl phospholipid dispersion for improving oral bioavailability of brick dust molecule: A case study of Aprepitant. Eur J Pharm Biopharm 2024; 197:114241. [PMID: 38432600 DOI: 10.1016/j.ejpb.2024.114241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/28/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
This study aims to investigate the potential use of polymer inclusion in the phospholipid-based solid dispersion approach for augmenting the biopharmaceutical performance of Aprepitant (APT). Initially, different polymers were screened using the microarray plate method to assess their ability to inhibit drug precipitation in the supersaturated solution and HPMCAS outperformed the others. Later, the binary (BD) and ternary (TD) phospholipid dispersions were prepared using the co-solvent evaporation method. Solid-state characterization was performed using SEM and PXRD to examine the physical properties, while molecular interactions were probed through FTIR and NMR analysis. In vitro dissolution studies were performed in both fasted and fed state biorelevant media. The results demonstrated a substantial increase in drug release from BD and TD, approximately 4.8 and 9.9 times higher compared to crystalline APT in FaSSIF. Notably, TD also showed a lowered dissolution difference between fed and fasted states in comparison to crystalline APT, indicating a reduction in the positive food effect of APT. Moreover, we assessed the impact of polymer inclusion on permeation under in vitro biomimetic conditions. In comparison with the crystalline APT suspension, both BD and TD demonstrated approximately 3.3 times and 14 times higher steady-state flux (Jss values), respectively. This can be ascribed to the supersaturation and presence of drug-rich submicron particles (nanodroplets) along with the multiple aggregates of drug with phospholipids and polymer in the donor compartment, consequently resulting in a more substantial driving force for passive diffusion. Lastly, in vivo pharmacokinetic evaluation demonstrated the enhanced absorption of both TD and BD over the free drug suspension in the fasted state. This enhancement was evident through a 2.1-fold and 1.3-fold increase in Cmax and a 2.3-fold and 1.4-fold increase in AUC0-t, respectively. Overall, these findings emphasize the potential of polymer-based phospholipid dispersion in enhancing the overall biopharmaceutical performance of APT.
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Affiliation(s)
- Ajay Sanjay Lale
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, India
| | - Arvind Sirvi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, India
| | - Shubham Debaje
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, India
| | - Sadhana Patil
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, India
| | - Abhay T Sangamwar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, India.
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25
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Dumontel B, Rosso G, Cauda V. Natural and artificial phospholipid bilayer coatings on solid-state nanoparticles, current and future perspectives. Nanomedicine (Lond) 2024; 19:653-655. [PMID: 38406890 DOI: 10.2217/nnm-2023-0358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Affiliation(s)
- Bianca Dumontel
- Department of Applied Science & Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin, 10129, Italy
| | - Giada Rosso
- Department of Applied Science & Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin, 10129, Italy
| | - Valentina Cauda
- Department of Applied Science & Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin, 10129, Italy
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26
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Ma C, Xie Y, Huang X, Zhang L, Julian McClements D, Zou L, Liu W. Encapsulation of (-)-epigallocatechin gallate (EGCG) within phospholipid-based nanovesicles using W/O emulsion-transfer methods: Masking bitterness and delaying release of EGCG. Food Chem 2024; 437:137913. [PMID: 37939421 DOI: 10.1016/j.foodchem.2023.137913] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/12/2023] [Accepted: 10/29/2023] [Indexed: 11/10/2023]
Abstract
A novel phospholipid-based nanovesicle (PBN) was developed to encapsulate (-)-epigallocatechin gallate (EGCG), a major polyphenol in green tea, to mask its bitter taste and expand its application in food products. The PBN was formed using W/O emulsion-transfer methods and showed a multilayer membrane nanovesicle structure (around 200 nm) observed with TEM. The PBN possessed a high encapsulation efficiency (92.1%) for EGCG. The bitterness of EGCG was significantly reduced to 1/12 after encapsulation. Fourier transform infrared spectroscopy (FTIR) indicated the EGCG mainly interacted with the upper chain/glycerol/head group region of the lipid bilayerin PBN. Quartz crystal microbalance with dissipation (QCM-D) showed the addition of γ-cyclodextrin in PBN enhanced EGCG's adsorption with phospholipids and allowed for its good sustained release. Encapsulating EGCG in PBN inhibited its complexation with mucin, reducing bitterness and astringency. This provides a new method to improve EGCG's flavor, potentially expanding its application in the food industry.
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Affiliation(s)
- Chenlu Ma
- State Key Laboratory of Food Science and Resources, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047 Jiangxi, China
| | - Youfa Xie
- Jiangzhong Pharmaceutical Co. LTD, Nanchang, 330041 Jiangxi, China
| | - Xin Huang
- Food Inspection and Testing Research Institute of Jiangxi General Institute of Testing and Certification, Nanchang 330046 Jiangxi, China
| | - Lu Zhang
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - David Julian McClements
- Biopolymers & Colloids Research Laboratory, Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA
| | - Liqiang Zou
- State Key Laboratory of Food Science and Resources, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047 Jiangxi, China; International Institute of Food Innovation Co., Ltd., Nanchang University, Luozhu Road, Xiaolan Economic and Technological Development Zone, Nanchang, 330200, Jiangxi, China.
| | - Wei Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047 Jiangxi, China; International Institute of Food Innovation Co., Ltd., Nanchang University, Luozhu Road, Xiaolan Economic and Technological Development Zone, Nanchang, 330200, Jiangxi, China; National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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27
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Pastuszak K, Jurak M, Kowalczyk B, Tarasiuk J, Wiącek AE, Palusińska-Szysz M. Susceptibility of Legionella gormanii Membrane-Derived Phospholipids to the Peptide Action of Antimicrobial LL-37-Langmuir Monolayer Studies. Molecules 2024; 29:1522. [PMID: 38611802 PMCID: PMC11013288 DOI: 10.3390/molecules29071522] [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: 02/16/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
LL-37 is the only member of the cathelicidin-type host defense peptide family in humans. It exhibits broad-spectrum bactericidal activity, which represents a distinctive advantage for future therapeutic targets. The presence of choline in the growth medium for bacteria changes the composition and physicochemical properties of their membranes, which affects LL-37's activity as an antimicrobial agent. In this study, the effect of the LL-37 peptide on the phospholipid monolayers at the liquid-air interface imitating the membranes of Legionella gormanii bacteria was determined. The Langmuir monolayer technique was employed to prepare model membranes composed of individual classes of phospholipids-phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylglycerol (PG), cardiolipin (CL)-isolated from L. gormanii bacteria supplemented or non-supplemented with exogenous choline. Compression isotherms were obtained for the monolayers with or without the addition of the peptide to the subphase. Then, penetration tests were carried out for the phospholipid monolayers compressed to a surface pressure of 30 mN/m, followed by the insertion of the peptide into the subphase. Changes in the mean molecular area were observed over time. Our findings demonstrate the diversified effect of LL-37 on the phospholipid monolayers, depending on the bacteria growth conditions. The substantial changes in membrane properties due to its interactions with LL-37 enable us to propose a feasible mechanism of peptide action at a molecular level. This can be associated with the stable incorporation of the peptide inside the monolayer or with the disruption of the membrane leading to the removal (desorption) of molecules into the subphase. Understanding the role of antimicrobial peptides is crucial for the design and development of new strategies and routes for combating resistance to conventional antibiotics.
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Affiliation(s)
- Katarzyna Pastuszak
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland; (K.P.); (A.E.W.)
| | - Małgorzata Jurak
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland; (K.P.); (A.E.W.)
| | - Bożena Kowalczyk
- Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland; (B.K.); (J.T.); (M.P.-S.)
| | - Jacek Tarasiuk
- Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland; (B.K.); (J.T.); (M.P.-S.)
| | - Agnieszka Ewa Wiącek
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland; (K.P.); (A.E.W.)
| | - Marta Palusińska-Szysz
- Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland; (B.K.); (J.T.); (M.P.-S.)
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28
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Choudhary V, Choudhary M, Bollag WB. Exploring Skin Wound Healing Models and the Impact of Natural Lipids on the Healing Process. Int J Mol Sci 2024; 25:3790. [PMID: 38612601 PMCID: PMC11011291 DOI: 10.3390/ijms25073790] [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: 02/08/2024] [Revised: 03/21/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
Cutaneous wound healing is a complex biological process involving a series of well-coordinated events aimed at restoring skin integrity and function. Various experimental models have been developed to study the mechanisms underlying skin wound repair and to evaluate potential therapeutic interventions. This review explores the diverse array of skin wound healing models utilized in research, ranging from rodent excisional wounds to advanced tissue engineering constructs and microfluidic platforms. More importantly, the influence of lipids on the wound healing process is examined, emphasizing their role in enhancing barrier function restoration, modulating inflammation, promoting cell proliferation, and promoting remodeling. Lipids, such as phospholipids, sphingolipids, and ceramides, play crucial roles in membrane structure, cell signaling, and tissue repair. Understanding the interplay between lipids and the wound microenvironment provides valuable insights into the development of novel therapeutic strategies for promoting efficient wound healing and tissue regeneration. This review highlights the significance of investigating skin wound healing models and elucidating the intricate involvement of lipids in the healing process, offering potential avenues for improving clinical outcomes in wound management.
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Affiliation(s)
- Vivek Choudhary
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (V.C.)
- Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
| | - Mrunal Choudhary
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (V.C.)
| | - Wendy B. Bollag
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (V.C.)
- Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
- Department of Dermatology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
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Starodumova IP, Dorofeeva LV, Prisyazhnaya NV, Tarlachkov SV, Vasilenko OV, Avtukh AN, Ospennikov YV, Subbotin SA, Evtushenko LI. Rathayibacter tanaceti sp. nov., a Novel Actinobacterium from Tanacetum vulgare Infested by Foliar Nematode Aphelenchoides sp. Curr Microbiol 2024; 81:123. [PMID: 38538917 DOI: 10.1007/s00284-024-03643-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 02/17/2024] [Indexed: 04/23/2024]
Abstract
Two novel yellow-pigmented, rod-shaped and non-motile coryneform actinobacteria, strains VKM Ac-2596T and VKM Ac-2761, were isolated from a plant Tanacetum vulgare (Asteraceae) infested by foliar nematode Aphelenchoides sp. The strains exhibited the highest 16S rRNA gene sequence similarities to Rathayibacter agropyri CA4T (99.71%), Rathayibacter rathayi DSM 7485T (99.65%) and Rathayibacter iranicus VKM Ac-1602T (99.65%). The pairwise average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between VKM Ac-2596T and VKM Ac-2671 towards the type strains of Rathayibacter species did not exceed 85.24% and 29.40%, respectively, that are well below the thresholds for species delineation. The target strains had key chemotaxonomic properties typical of the genus Rathayibacter, namely, the DAB-based peptidoglycan, rhamnose and mannose as the predominant sugars and a rhamnomannan in the cell, the major menaquinone MK-10 and fatty acids of iso-anteiso type, with a large proportion of anteiso-15:0. The strains showed clear differences from the recognized Rathayibacter species in several phenotypic characteristics, including the difference in the composition of cell wall glycopolymers. Based on the results obtained in this study and the data published previously, we provide a description of a new species, Rathayibacter tanaceti sp. nov., with DL-642T (= VKM Ac-2596T = LMG 33114T) as the type strain.
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Affiliation(s)
- Irina P Starodumova
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290.
| | - Lubov V Dorofeeva
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290
| | - Natalia V Prisyazhnaya
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290
| | - Sergey V Tarlachkov
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290
| | - Oleg V Vasilenko
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290
| | - Alexander N Avtukh
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290
| | - Yury V Ospennikov
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290
| | - Sergei A Subbotin
- Center of Parasitology, A.N. Severtsov Institute of Ecology and Evolution, Moscow, Russia, 119071
- California Department of Food and Agriculture, Sacramento, CA, 95832, USA
| | - Lyudmila I Evtushenko
- All-Russian Collection of Microorganisms (VKM), G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Scientific Center for Biological Research, Russian Academy of Sciences, Pushchino, Russia, 142290
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Moitra P, Skrodzki D, Molinaro M, Gunaseelan N, Sar D, Aditya T, Dahal D, Ray P, Pan D. Context-Responsive Nanoparticle Derived from Synthetic Zwitterionic Ionizable Phospholipids in Targeted CRISPR/Cas9 Therapy for Basal-like Breast Cancer. ACS Nano 2024; 18:9199-9220. [PMID: 38466962 DOI: 10.1021/acsnano.4c01400] [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] [Indexed: 03/13/2024]
Abstract
The majority of triple negative breast cancers (TNBCs) are basal-like breast cancers (BLBCs), which tend to be more aggressive, proliferate rapidly, and have poor clinical outcomes. A key prognostic biomarker and regulator of BLBC is the Forkhead box C1 (FOXC1) transcription factor. However, because of its functional placement inside the cell nucleus and its structural similarity with other related proteins, targeting FOXC1 for therapeutic benefit, particularly for BLBC, continues to be difficult. We envision targeted nonviral delivery of CRISPR/Cas9 plasmid toward the efficacious knockdown of FOXC1. Keeping in mind the challenges associated with the use of CRISPR/Cas9 in vivo, including off-targeting modifications, and effective release of the cargo, a nanoparticle with context responsive properties can be designed for efficient targeted delivery of CRISPR/Cas9 plasmid. Consequently, we have designed, synthesized, and characterized a zwitterionic amino phospholipid-derived transfecting nanoparticle for delivery of CRISPR/Cas9. The construct becomes positively charged only at low pH, which encourages membrane instability and makes it easier for nanoparticles to exit endosomes. This has enabled effective in vitro and in vivo downregulation of protein expression and genome editing. Following this, we have used EpCAM aptamer to make the system targeted toward BLBC cell lines and to reduce its off-target toxicity. The in vivo efficacy, biodistribution, preliminary pharmacokinetics, and biosafety of the optimized targeted CRISPR nanoplatform is then validated in a rodent xenograft model. Overall, we have attempted to knockout the proto-oncogenic FOXC1 expression in BLBC cases by efficient delivery of CRISPR effectors via a context-responsive nanoparticle delivery system derived from a designer lipid derivative. We believe that the nonviral approach for in vitro and in vivo delivery of CRISPR/Cas9 targeted toward FOXC1, studied herein, will greatly emphasize the therapeutic regimen for BLBC.
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Affiliation(s)
- Parikshit Moitra
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Pediatrics, Centre of Blood Oxygen Transport & Hemostasis, University of Maryland-Baltimore School of Medicine, Baltimore, Maryland 21201, United States
- Center for Infectious Disease Dynamics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - David Skrodzki
- Department of Pediatrics, Centre of Blood Oxygen Transport & Hemostasis, University of Maryland-Baltimore School of Medicine, Baltimore, Maryland 21201, United States
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Matthew Molinaro
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Nivetha Gunaseelan
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Dinabandhu Sar
- Department of Bioengineering, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Teresa Aditya
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for Infectious Disease Dynamics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Dipendra Dahal
- Department of Pediatrics, Centre of Blood Oxygen Transport & Hemostasis, University of Maryland-Baltimore School of Medicine, Baltimore, Maryland 21201, United States
| | - Priyanka Ray
- Department of Chemical & Biochemical Engineering, University of Maryland-Baltimore County, Baltimore County, Maryland 21250, United States
| | - Dipanjan Pan
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Pediatrics, Centre of Blood Oxygen Transport & Hemostasis, University of Maryland-Baltimore School of Medicine, Baltimore, Maryland 21201, United States
- Center for Infectious Disease Dynamics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Bioengineering, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemical & Biochemical Engineering, University of Maryland-Baltimore County, Baltimore County, Maryland 21250, United States
- Huck Institutes of the Life Sciences, 101 Huck Life Sciences Building, University Park, Pennsylvania 16802, United States
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Wang C, Dippold MA, Kuzyakov Y, Dorodnikov M. Microbial strategies for phosphorus acquisition in rice paddies under contrasting water regimes: Multiple source tracing by 32P and 33P. Sci Total Environ 2024; 918:170738. [PMID: 38325444 DOI: 10.1016/j.scitotenv.2024.170738] [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: 10/07/2023] [Revised: 01/31/2024] [Accepted: 02/04/2024] [Indexed: 02/09/2024]
Abstract
Microbial acquisition and utilization of organic and mineral phosphorus (P) sources in paddy soils are strongly dependent on redox environment and remain the key to understand P turnover and allocation for cell compound synthesis. Using double 32/33P labeling, we traced the P from three sources in a P-limited paddy soil: ferric iron-bound phosphate (Fe-P), wheat straw P (Straw-P), and soil P (Soil-P) in microbial biomass P (MBP) and phospholipids (Phospholipid-P) of individual microbial groups depending on water regimes: (i) continuous flooding or (ii) alternate wetting and drying. 32/33P labeling combined with phospholipid fatty acid analysis allowed to trace P utilization by functional microbial groups. Microbial P nutrition was mainly covered by Soil-P, whereas microorganisms preferred to take up P from mineralized Straw-P than from Fe-P dissolution. The main Straw-P mobilizing agents were Actinobacteria under alternating wetting and drying and other Gram-positive bacteria under continuous flooding. Actinobacteria and arbuscular mycorrhiza increased P incorporation into cell membranes by 1.4-5.8 times under alternate wetting and drying compared to continuous flooding. The Fe-P contribution to MBP was 4-5 times larger in bulk than in rooted soil because (i) rice roots outcompeted microorganisms for P uptake from Fe-P and (ii) rhizodeposits stimulated microbial activity, e.g. phosphomonoesterase production and Straw-P mineralization. Higher phosphomonoesterase activities during slow soil drying compensated for the decreased reductive dissolution of Fe-P. Concluding, microbial P acquisition strategies depend on (i) Soil-P, especially organic P, availability, (ii) the activity of phosphomonoesterases produced by microorganisms and roots, and (iii) P sources - all of which depend on the redox conditions. Maximizing legacy P utilization in the soil as a function of the water regime is one potential way to reduce competition between roots and microbes for P in rice cultivation.
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Affiliation(s)
- Chaoqun Wang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, 710061 Xi'an, China; Biogeochemistry of Agroecosystems, University of Goettingen, 37077 Goettingen, Germany.
| | - Michaela A Dippold
- Biogeochemistry of Agroecosystems, University of Goettingen, 37077 Goettingen, Germany; Geo-Biosphere Interactions, University of Tuebingen, 72076 Tuebingen, Germany
| | - Yakov Kuzyakov
- Soil Science of Temperate Ecosystems, University of Goettingen, 37077 Goettingen, Germany
| | - Maxim Dorodnikov
- Soil Science of Temperate Ecosystems, University of Goettingen, 37077 Goettingen, Germany; Institute of Landscape Ecology, University of Muenster, 48149 Muenster, Germany
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Steiner K, Josef Schmolz J, Hoang F, Wolf H, Seiser S, Elbe-Bürger A, Klang V. Surfactants for stabilization of dermal emulsions and their skin compatibility under UVA irradiation: Diacyl phospholipids and polysorbate 80 result in high viability rates of primary human skin cells. Int J Pharm 2024; 653:123903. [PMID: 38350500 DOI: 10.1016/j.ijpharm.2024.123903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/25/2024] [Accepted: 02/09/2024] [Indexed: 02/15/2024]
Abstract
Phospholipids are versatile formulation compounds with high biocompatibility. However, no data on their effect on skin in combination with UVA radiation exist. Thus, it was the aim of this work to (i) develop o/w nanoemulsions (NEs) differing in surfactant type and to investigate their physicochemical stability at different storage temperatures, (ii) establish a standardized protocol for in vitro phototoxicity testing using primary human skin cells and (iii) investigate the phototoxicity of amphoteric phospholipids (S45, S75, E80, S100, LPC80), sodium lauryl ether sulfate (SLES) and polysorbate 80 (PS80). Satisfying systems were developed with all surfactants except S100 due to low zeta potential (-21.4 mV ± 4.69). SLES and PS80-type NEs showed the highest stability after eight weeks; temperature-dependent variations in storage stability were most noticeable for phospholipid surfactants. For phospholipid-based NEs, higher phosphatidylcholine content led to unstable formulations. Phototoxicity assays with primary skin fibroblasts confirmed the lack of UVA-related phototoxicity but revealed cytotoxic effects of LPC80 and SLES, resulting in cell viability as low as 2.7 % ±0.78 and 1.9 % ±1.57 compared to the control. Our findings suggest that surfactants S45, S75 and PS80 are the most promising candidates for skin-friendly emulsifiers in sensitive applications involving exposure to UV light.
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Affiliation(s)
- Katja Steiner
- University of Vienna, Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology and Biopharmaceutics, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
| | - Jakob Josef Schmolz
- University of Vienna, Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology and Biopharmaceutics, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
| | - Felisa Hoang
- University of Vienna, Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology and Biopharmaceutics, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
| | - Hanna Wolf
- University of Vienna, Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology and Biopharmaceutics, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
| | - Saskia Seiser
- Medical University of Vienna, Department of Dermatology, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Adelheid Elbe-Bürger
- Medical University of Vienna, Department of Dermatology, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Victoria Klang
- University of Vienna, Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology and Biopharmaceutics, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
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Müller-Calleja N, Grunz K, Nguyen TS, Posma J, Pedrosa D, Meineck M, Hollerbach A, Braun J, Muth S, Schild H, Saar K, Hübner N, Krishnaswamy S, Royce J, Teyton L, Lemmermann N, Weinmann-Menke J, Lackner KJ, Ruf W. Targeting the tissue factor coagulation initiation complex prevents antiphospholipid antibody development. Blood 2024; 143:1167-1180. [PMID: 38142429 DOI: 10.1182/blood.2023022276] [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: 08/22/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/26/2023] Open
Abstract
ABSTRACT Antiphospholipid antibodies (aPL) in primary or secondary antiphospholipid syndrome (APS) are a major cause for acquired thrombophilia, but specific interventions preventing autoimmune aPL development are an unmet clinical need. Although autoimmune aPL cross react with various coagulation regulatory proteins, lipid-reactive aPL, including those derived from patients with COVID-19, recognize the endolysosomal phospholipid lysobisphosphatidic acid presented by the cell surface-expressed endothelial protein C receptor. This specific recognition leads to complement-mediated activation of tissue factor (TF)-dependent proinflammatory signaling and thrombosis. Here, we show that specific inhibition of the TF coagulation initiation complex with nematode anticoagulant protein c2 (NAPc2) prevents the prothrombotic effects of aPL derived from patients with COVID-19 in mice and the aPL-induced proinflammatory and prothrombotic activation of monocytes. The induction of experimental APS is dependent on the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex, and NAPc2 suppresses monocyte endosomal reactive oxygen species production requiring the TF cytoplasmic domain and interferon-α secretion from dendritic cells. Latent infection with murine cytomegalovirus causes TF cytoplasmic domain-dependent development of persistent aPL and circulating phospholipid-reactive B1 cells, which is prevented by short-term intervention with NAPc2 during acute viral infection. In addition, treatment of lupus prone MRL-lpr mice with NAPc2, but not with heparin, suppresses dendritic-cell activation in the spleen, aPL production and circulating phospholipid-reactive B1 cells, and attenuates lupus pathology. These data demonstrate a convergent TF-dependent mechanism of aPL development in latent viral infection and autoimmune disease and provide initial evidence that specific targeting of the TF initiation complex has therapeutic benefits beyond currently used clinical anticoagulant strategies.
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Affiliation(s)
- Nadine Müller-Calleja
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
- Institute of Clinical Chemistry and Laboratory Medicine, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Kristin Grunz
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - T Son Nguyen
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Jens Posma
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Denise Pedrosa
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Myriam Meineck
- Department of Medicine I, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Anne Hollerbach
- Institute of Clinical Chemistry and Laboratory Medicine, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Johannes Braun
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Sabine Muth
- Institute for Immunology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Hansjörg Schild
- Institute for Immunology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Kathrin Saar
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Charite-Universitätsmedizin Berlin, Berlin, Germany
- German Center for Cardiovascular Research (DZHK), Partner site Berlin, Berlin, Germany
| | - Norbert Hübner
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Charite-Universitätsmedizin Berlin, Berlin, Germany
- German Center for Cardiovascular Research (DZHK), Partner site Berlin, Berlin, Germany
| | - Sriram Krishnaswamy
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA
| | - Jennifer Royce
- Department of Immunology and Microbiology, Scripps Research, La Jolla, CA
| | - Luc Teyton
- Department of Immunology and Microbiology, Scripps Research, La Jolla, CA
| | - Niels Lemmermann
- Institute for Virology, Johannes Gutenberg University Medical Center, Mainz, Germany
- Institute of Virology, University Hospital Bonn, Bonn, Germany
| | - Julia Weinmann-Menke
- Department of Medicine I, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Karl J Lackner
- Institute of Clinical Chemistry and Laboratory Medicine, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Wolfram Ruf
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
- Department of Immunology and Microbiology, Scripps Research, La Jolla, CA
- German Center for Cardiovascular Research (DZHK), Partner site Rhein-Main, Mainz, Germany
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Giri RP, Chowdhury S, Mukhopadhyay MK, Chakrabarti A, Sanyal MK. Ganglioside GM1 Drives Hemin and Protoporphyrin Adsorption in Phospholipid Membranes: A Structural Study. J Phys Chem B 2024; 128:2745-2754. [PMID: 38447189 DOI: 10.1021/acs.jpcb.3c08239] [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] [Indexed: 03/08/2024]
Abstract
Monosialoganglioside (GM1), a ubiquitous component of lipid rafts, and hemin, an integral part of heme proteins such as hemoglobin, are essential to the cell membranes of brain neurons and erythrocyte red blood cells for regulating cellular communication and oxygen transport. Protoporphyrin IX (PPIX) and its derivative hemin, on the contrary, show significant cytotoxic effects when in excess causing hematological diseases, such as thalassemia, anemia, malaria, and neurodegeneration. However, the in-depth molecular etiology of their interactions with the cell membrane has so far been poorly understood. Herein, the structure of the polymer cushion-supported lipid bilayer (SLB) of the binary mixture of phospholipid and GM1 in the presence of PPIX and its derivative hemin has been investigated to predict the molecular interactions in model phospholipid membranes. A high-resolution synchrotron-based X-ray scattering technique has been employed to explore the out-of-plane structure of the assembly at different compositions and concentrations. The structural changes have been complemented with the isobaric changes in the mean molecular area obtained from the Langmuir monolayer isotherm to predict the additive-induced membrane condensation and fluidization. PPIX-induced fluidization of phospholipid SLB without GM1 was witnessed, which was reversed to condensation with 2-fold higher structural changes in the presence of GM1. A hemin concentration-dependent linear condensing effect was observed in the pristine SLB. The effect was significantly reduced, and the linearity was observed to be lost in the mixed SLB containing GM1. Our study shows that GM1 alters the interaction of hemin and PPIX with the membrane, which could be explained with the aid of hydrophobic and electrostatic interactions. Our study indicates favorable and unfavorable interactions of GM1 with PPIX and hemin, respectively, in the membrane. The observed structural changes in both SLB and the underlying polymer cushion layer lead to the proposal of a molecule-specific interaction model that can benefit the pharmaceutical industries specialized for drug designing. Our study potentially enriches our fundamental biophysical understanding of neurodegenerative diseases and drug-membrane interactions.
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Affiliation(s)
- Rajendra P Giri
- Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, Kolkata, West Bengal 700064, India
- Department of Physics, Indian Institute of Technology (ISM), Dhanbad, Jharkhand 826004, India
| | - Subhadip Chowdhury
- Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, Kolkata, West Bengal 700064, India
| | - Mrinmay K Mukhopadhyay
- Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, Kolkata, West Bengal 700064, India
| | - Abhijit Chakrabarti
- Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, Kolkata, West Bengal 700064, India
- School of Biological Sciences, Ramakrishna Mission Vivekananda Educational & Research Institute, Narendrapur, Kolkata 700103, India
| | - Milan K Sanyal
- Saha Institute of Nuclear Physics, A CI of Homi Bhabha National Institute, Kolkata, West Bengal 700064, India
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Liu Y, Kan G, Wang Y, Chen Y, Niu Y, He J, Ju Y, Jiang Y, Jiang J, Zhang H. Nicotiana alkaloids-intervened phospholipid ozonolysis at the air-water interface. Sci Total Environ 2024; 917:170456. [PMID: 38296096 DOI: 10.1016/j.scitotenv.2024.170456] [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: 11/08/2023] [Revised: 01/13/2024] [Accepted: 01/24/2024] [Indexed: 02/03/2024]
Abstract
Cigarette nicotiana alkaloids associated with lung and cardiovascular diseases attack enormous attention. However, the mechanism at the molecular level between nicotiana alkaloids and phospholipid ozonolysis remains elusive. Herein, we investigated the interfacial ozonolysis of a hung droplet containing 1-palmitoyl-2-oleoyl-sn-phosphatidylglycerol (POPG) intervened by nicotiana alkaloids (4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, NNK; rac-N'-nitrosonornicotine, NNN; nicotine; and (R,S)-N-nitrosoanasabine, NAT) and followed by on-line mass spectrometry analysis. NNK and NNN showed an acceleration on the interfacial ozonolysis, while nicotine and NAT inhibited this chemistry. Such acceleration/inhibition on POPG ozonolysis was positively correlated with nicotiana alkaloid concentrations. The reaction rate constants suggested that the ozonolysis of lung phospholipids exposed to cigarette smoke at the air-water interface occurred rapidly. A possible mechanism of the hydrophilic/oleophilic nature of nicotiana alkaloids mediating the packing density of POPG was proposed. NNK and NNN with a hydrophilic nature inserted into the POPG monolayer loosed the packing, but nicotine and NAT with an oleophilic nature let the POPG closely pack and shield the CC double bonds exposed to ozone (O3). These results gain the knowledge of nicotiana alkaloids mediated phospholipid ozonolysis at the molecule level and provide a method for online interfacial reaction studies associated with elevated indoor pollutants on public health.
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Affiliation(s)
- Yaqi Liu
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Guangfeng Kan
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Yanjie Wang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Yijing Chen
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China
| | - Yuqing Niu
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Jing He
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Yun Ju
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Yanxiao Jiang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Jie Jiang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Hong Zhang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai, Shandong 264209, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China.
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Bartoš L, Vácha R. Peptide translocation across asymmetric phospholipid membranes. Biophys J 2024; 123:693-702. [PMID: 38356262 PMCID: PMC10995401 DOI: 10.1016/j.bpj.2024.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/26/2024] [Accepted: 02/09/2024] [Indexed: 02/16/2024] Open
Abstract
The transport of molecules across cell membranes is vital for proper cell function and effective drug delivery. While most cell membranes naturally possess an asymmetric lipid composition, research on membrane transport predominantly uses symmetric lipid membranes. The permeation through the asymmetric membrane is then calculated as a sum of the inverse permeabilities of leaflets from symmetric bilayers. In this study, we examined how two types of amphiphilic molecules translocate across both asymmetric and symmetric membranes. Using computer simulations with both coarse-grained and atomistic force fields, we calculated the free energy profiles for the passage of model amphiphilic peptides and a lipid across various membranes. Our results consistently demonstrate that while the free energy profiles for asymmetric membranes with a small differential stress concur with symmetric ones in the region of lipid headgroups, the profiles differ around the center of the membrane. In this region, the free energy for the asymmetric membrane transitions between the profiles for two symmetric membranes. In addition, we show that peptide permeability through an asymmetric membrane cannot always be predicted from the permeabilities of the symmetric membranes. This indicates that using symmetric membranes falls short in providing an accurate depiction of peptide translocation across asymmetric membranes.
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Affiliation(s)
- Ladislav Bartoš
- CEITEC - Central European Institute of Technology, Brno, Czech Republic; National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Robert Vácha
- CEITEC - Central European Institute of Technology, Brno, Czech Republic; National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic; Department of Condensed Matter Physics, Faculty of Science, Masaryk University, Brno, Czech Republic.
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Jadhav K, Sirvi A, Janjal A, Kashyap MC, Sangamwar AT. Utilization of Lipophilic Salt and Phospholipid Complex in Lipid-Based Formulations to Modulate Drug Loading and Oral Bioavailability of Pazopanib. AAPS PharmSciTech 2024; 25:59. [PMID: 38472682 DOI: 10.1208/s12249-024-02780-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
Pazopanib hydrochloride (PAZ) displays strong intermolecular interaction in its crystal lattice structure, limiting its solubility and dissolution. The development of lipid-based formulations (LbFs) resulted in reduced PAZ loading due to solid-state mediated low liposolubility. This study aims to enhance our understanding of PAZ crystallinity by synthesizing a lipophilic salt and phospholipid complex and investigating its impact on the drug loading in LbFs. The synthesized pazopanib lipophilic salt and phospholipid complex were extensively characterized. The solid form of pazopanib docusate (PAZ-DOC) and pazopanib phospholipid complex (PAZ-PLC) indicates a reduction in characteristic diffraction peaks of crystalline PAZ. The lipid formulations were prepared using synthesized PAZ-DOC and PAZ-PLC, where PAZ-DOC demonstrated six fold higher drug solubility than the commercial salt form and twice that of the PAZ-PLC due to differences in the crystallinity. Further, the impact of salt and complex formation was assessed on the aqueous drug solubilization using lipolysis and multimedia dissolution experiments. Moreover, the LbFs showed notably faster dissolution compared to the crystalline PAZ and marketed tablet. In terms of in vivo pharmacokinetics, the PAZ-DOC LbF exhibited a remarkable 11-fold increase in AUC value compared to the crystalline PAZ and a 2.5-fold increase compared to Votrient®. Similarly, PAZ-PLC LbF showed an approximately nine fold increase in drug exposure compared to the crystalline PAZ, and a 2.2-fold increase compared to Votrient®. These findings suggest that disrupting the crystallinity of drugs and incorporating them into LbF could be advantageous for enhancing drug loading and overcoming limitations related to drug absorption.
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Affiliation(s)
- Karan Jadhav
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Arvind Sirvi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Akash Janjal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Mahesh C Kashyap
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Abhay T Sangamwar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India.
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Bikulčienė I, Baleišis J, Mazgelytė E, Rudys R, Vosyliūtė R, Šimkūnaitė-Rizgelienė R, Kaminskas A, Karčiauskaitė D. Impact of chronic psychological stress on platelet membrane fatty acid composition in a rat model of type 1 diabetes Mellitus. Lipids Health Dis 2024; 23:69. [PMID: 38459494 PMCID: PMC10921692 DOI: 10.1186/s12944-024-02067-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/28/2024] [Indexed: 03/10/2024] Open
Abstract
BACKGROUND Chronic stress and diabetes mellitus are highly associated with oxidative stress and inflammation, resulting in cell membrane disruption and platelet activity. This study aims to evaluate the impact of chronic psychological stress on the composition of the platelet phospholipid membrane and platelet activation in type 1 diabetes mellitus (T1DM). METHODS We enrolled 35 mature healthy female Wistar rats and randomly divided them into 4 groups, namely the control group (n = 9), stress group (n = 10), T1DM group (n = 8), and T1DM + Stress group (n = 8). The Wistar rats were treated in different experimental conditions for 28 days while being provided free access to feed and water. The concentration of corticosterone in blood serum and hair samples was measured using a competitive enzyme-linked immunosorbent assay. Gas chromatography-mass spectrometry was conducted to identify the methyl esters of fatty acids (FAs) in the platelet phospholipid membrane. A quantitative determination of 11-dehydro-thromboxane B2 in the blood serum was also performed using a competitive enzyme-linked immunosorbent assay. RESULTS After 28 days, the concentration of corticosterone in blood serum (ng/mL) was observed to be higher in the stress group as compared to the T1DM and T1DM + Stress groups (P = 0.031 and P = 0.008, respectively). The percentage of C 16:0 FA in the platelet membrane was greater in the T1DM + Stress group, but its levels of C 20:1 omega (ω) 9 FA, including C 18:3ω3 FA, C 20:5ω3 FA, and the total sum of ω3 FAs, were lower as compared to the control group (P = 0.016; P = 0.016; P = 0.031; P = 0.016, P = 0.031). The concentration of 11-dehydro-thromboxane B2 in blood serum (pg/mL) was observed to be higher in the stress group than in rats with T1DM (P = 0.063). CONCLUSION Chronic psychological stress is related to higher levels of corticosterone, saturated FAs acids in the platelet membrane, and greater platelet activation. This study proves how a low percentage of unsaturated fatty acids in the DM and stress groups indicates the disturbing impact of the oxidative/inflammatory environment to lipid metabolism and neuroendocrine response.
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Affiliation(s)
- Inga Bikulčienė
- Department of Physiology, Biochemistry, Microbiology and Laboratory Medicine, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, 21 M. K. Čiurlionio St, Vilnius, LT-03101, Lithuania.
- Department of preclinical research, Centre for Innovative Medicine, 5 Santariškių St, Vilnius, LT-08406, Lithuania.
| | - Justinas Baleišis
- Department of preclinical research, Centre for Innovative Medicine, 5 Santariškių St, Vilnius, LT-08406, Lithuania
| | - Eglė Mazgelytė
- Department of Physiology, Biochemistry, Microbiology and Laboratory Medicine, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, 21 M. K. Čiurlionio St, Vilnius, LT-03101, Lithuania
| | - Romualdas Rudys
- Department of preclinical research, Centre for Innovative Medicine, 5 Santariškių St, Vilnius, LT-08406, Lithuania
| | - Rūta Vosyliūtė
- Department of Anatomy, Histology and Anthropology, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, 21 M. K. Čiurlionio St, Vilnius, LT-03101, Lithuania
| | - Renata Šimkūnaitė-Rizgelienė
- Department of Anatomy, Histology and Anthropology, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, 21 M. K. Čiurlionio St, Vilnius, LT-03101, Lithuania
| | - Arvydas Kaminskas
- Department of Physiology, Biochemistry, Microbiology and Laboratory Medicine, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, 21 M. K. Čiurlionio St, Vilnius, LT-03101, Lithuania
| | - Dovilė Karčiauskaitė
- Department of Physiology, Biochemistry, Microbiology and Laboratory Medicine, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, 21 M. K. Čiurlionio St, Vilnius, LT-03101, Lithuania
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Ragaller F, Sjule E, Urem YB, Schlegel J, El R, Urbancic D, Urbancic I, Blom H, Sezgin E. Quantifying Fluorescence Lifetime Responsiveness of Environment-Sensitive Probes for Membrane Fluidity Measurements. J Phys Chem B 2024; 128:2154-2167. [PMID: 38415644 PMCID: PMC10926104 DOI: 10.1021/acs.jpcb.3c07006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/29/2024]
Abstract
The structural diversity of different lipid species within the membrane defines its biophysical properties such as membrane fluidity, phase transition, curvature, charge distribution, and tension. Environment-sensitive probes, which change their spectral properties in response to their surrounding milieu, have greatly contributed to our understanding of such biophysical properties. To realize the full potential of these probes and avoid misinterpretation of their spectral responses, a detailed investigation of their fluorescence characteristics in different environments is necessary. Here, we examined the fluorescence lifetime of two newly developed membrane order probes, NR12S and NR12A, in response to alterations in their environments such as the degree of lipid saturation, cholesterol content, double bond position and configuration, and phospholipid headgroup. As a comparison, we investigated the lifetime sensitivity of the membrane tension probe Flipper in these environments. Applying fluorescence lifetime imaging microscopy (FLIM) in both model membranes and biological membranes, all probes distinguished membrane phases by lifetime but exhibited different lifetime sensitivities to varying membrane biophysical properties (e.g., cholesterol). While the lifetime of Flipper is particularly sensitive to the membrane cholesterol content, the NR12S and NR12A lifetimes are moderately sensitive to both the cholesterol content and lipid acyl chains. Moreover, all of the probes exhibit longer lifetimes at longer emission wavelengths in membranes of any complexity. This emission wavelength dependency results in varying lifetime resolutions at different spectral regions, which are highly relevant for FLIM data acquisition. Our data provide valuable insights on how to perform FLIM with these probes and highlight both their potential and limitations.
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Affiliation(s)
- Franziska Ragaller
- Department
of Women’s and Children’s Health, Science for Life Laboratory, Karolinska Institutet, 17165 Solna, Sweden
| | - Ellen Sjule
- Department
of Women’s and Children’s Health, Science for Life Laboratory, Karolinska Institutet, 17165 Solna, Sweden
| | - Yagmur Balim Urem
- Department
of Women’s and Children’s Health, Science for Life Laboratory, Karolinska Institutet, 17165 Solna, Sweden
| | - Jan Schlegel
- Department
of Women’s and Children’s Health, Science for Life Laboratory, Karolinska Institutet, 17165 Solna, Sweden
| | - Rojbin El
- Weatherall
Institute of Molecular Medicine, University
of Oxford, OX39DS Oxford, United
Kingdom
| | - Dunja Urbancic
- Weatherall
Institute of Molecular Medicine, University
of Oxford, OX39DS Oxford, United
Kingdom
- Faculty
of Pharmacy, University
of Ljubljana, 1000 Ljubljana, Slovenia
| | - Iztok Urbancic
- Laboratory
of Biophysics, Condensed Matter Physics Department, Jožef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Hans Blom
- Science
for Life Laboratory, Department of Applied Physics, Royal Institute of Technology, 17165 Solna, Sweden
| | - Erdinc Sezgin
- Department
of Women’s and Children’s Health, Science for Life Laboratory, Karolinska Institutet, 17165 Solna, Sweden
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Dobrzyńska M, Moniuszko-Malinowska A, Radziwon P, Pancewicz S, Gęgotek A, Skrzydlewska E. Tick-borne encephalitis virus transmitted singly and in duo with Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum bacteria by ticks as pathogens modifying lipid metabolism in human blood. J Biomed Sci 2024; 31:28. [PMID: 38438941 PMCID: PMC10910801 DOI: 10.1186/s12929-024-01016-7] [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: 01/08/2024] [Accepted: 02/23/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND Ticks are vectors of various pathogens, including tick-borne encephalitis virus causing TBE and bacteria such as Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum causing e.g. viral-bacterial co-infections (TBE + LB/HGA), which pose diagnostic and therapeutic problems. Since these infections are usually accompanied by inflammation and oxidative stress causing metabolic modifications, including phospholipids, the aim of the study was to assess the level of polyunsaturated fatty acids and their metabolism (ROS- and enzyme-dependent) products in the blood plasma of patients with TBE and TBE + LB/HGA before and after pharmacotherapy. METHODS The total antioxidant status was determined using 2,20-azino-bis-3-ethylbenzothiazolin-6-sulfonic acid. The phospholipid and free fatty acids were analysed by gas chromatography. Lipid peroxidation was estimated by measuring small molecular weight reactive aldehyde, malondialdehyde and neuroprostanes. The reactive aldehyde was determined using gas chromatography coupled with mass spectrometry. The activity of enzymes was examined spectrophotometrically. An analysis of endocannabinoids and eicosanoids was performed using a Shimadzu UPLC system coupled with an electrospray ionization source to a Shimadzu 8060 Triple Quadrupole system. Receptor expression was measured using an enzyme-linked immunosorbent assay (ELISA). RESULTS The reduced antioxidant status as a result of infection was accompanied by a decrease in the level of phospholipid arachidonic acid (AA) and docosahexaenoic acid (DHA) in TBE, an increase in DHA in co-infection and in free DHA in TBE with an increase in the level of lipid peroxidation products. The enhanced activity of enzymes metabolizing phospholipids and free PUFAs increased the level of endocannabinoids and eicosanoids, while decreased 15-PGJ2 and PGE2 was accompanied by activation of granulocyte receptors before pharmacotherapy and only tending to normalize after treatment. CONCLUSION Since classical pharmacotherapy does not prevent disorders of phospholipid metabolism, the need to support treatment with antioxidants may be suggested.
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Affiliation(s)
- Marta Dobrzyńska
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222, Bialystok, Poland
| | - Anna Moniuszko-Malinowska
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Zurawia 14, 15-540, Bialystok, Poland.
| | - Piotr Radziwon
- Regional Centre for Transfusion Medicine, M. Sklodowskiej-Curie 23, 15-950, Bialystok, Poland
| | - Sławomir Pancewicz
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Zurawia 14, 15-540, Bialystok, Poland
| | - Agnieszka Gęgotek
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222, Bialystok, Poland
| | - Elżbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2D, 15-222, Bialystok, Poland
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Liu F, Smith AD, Wang TTY, Pham Q, Hou P, Cheung L, Yang H, Li RW. Phospholipid-rich krill oil promotes intestinal health by strengthening beneficial gut microbial interactions in an infectious colitis model. Food Funct 2024; 15:2604-2615. [PMID: 38356343 DOI: 10.1039/d3fo04980a] [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] [Indexed: 02/16/2024]
Abstract
Krill oil (KO) is rich in bioactive ingredients including phospholipids, omega-3 fatty acids, and astaxanthin. While health benefits and roles of KO in modulating lipid metabolism are well documented, its ability to alleviate symptoms related to infectious colitis and modulate gut microbial interactions is still largely unknown. Here we used a multi-omics approach, including transcriptome, microbiome, and metabolome analyses, to understand how KO mediates gut microbial interactions and promotes epithelial healing in an infectious colitis model. KO reversed the infection-induced intestinal hyperplasia to baseline. KO dampened intestinal inflammation via multiple targets, mediating several proinflammatory pathways, including IL17 signaling, and reducing luminal histamine levels. KO supplementation enriched butyrate-producing bacteria, including Roseburia and Clostridium, and strengthened beneficial microbial interactions in the gut microbial community. Supplementation with phospholipid-rich KO also increased microbial phylogenetic diversity. KO enhanced mucosal barrier function by increasing the production of Muc6 and the antimicrobial peptide, Leap2. KO played an active role during epithelial healing by inhibiting the expression of granzyme K while increasing the expression of a colitis protective factor, Dclk1. Together, our findings demonstrate that KO rich in omega-3 phospholipids can play a protective role in infectious colitis and should be considered a dietary option for promoting gut health.
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Affiliation(s)
- Fang Liu
- College of Public Health, Zhengzhou University, Zhengzhou, China.
| | - Allen D Smith
- USDA-ARS, Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, Beltsville, MD, USA
| | - Thomas T Y Wang
- USDA-ARS, Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, Beltsville, MD, USA
| | - Quynhchi Pham
- USDA-ARS, Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, Beltsville, MD, USA
| | - Pengfen Hou
- Affilated Hospital of Qingdao Binhai University, Qingdao, China
| | - Lumei Cheung
- USDA-ARS, Diet, Genomics, and Immunology Laboratory, Beltsville Human Nutrition Research Center, Beltsville, MD, USA
| | - Haiyan Yang
- College of Public Health, Zhengzhou University, Zhengzhou, China.
| | - Robert W Li
- USDA-ARS, Animal Parasitic Diseases Laboratory, Beltsville, MD, USA
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Moreno-Vedia J, Llop D, Rodríguez-Calvo R, Plana N, Amigó N, Rosales R, Esteban Y, Masana L, Ibarretxe D, Girona J. Lipidomics of triglyceride-rich lipoproteins derived from hyperlipidemic patients on inflammation. Eur J Clin Invest 2024; 54:e14132. [PMID: 38010694 DOI: 10.1111/eci.14132] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND AND AIM Triglyceride-rich lipoproteins (TRLs) can have an important role in atherosclerosis development due to their size and ability to penetrate the endothelium. While high plasma triglyceride (TG) levels and chronic inflammation are relevant in metabolic diseases, it remains unclear whether TGs are atherogenic or which TRL-TG-derived metabolites are responsible for inflammation. Here, we aimed to study the lipidome modifications of TRL particles enriched in TG in patients with hyperlipidemia and their associations with a proinflammatory status both in vivo and in vitro. METHODS Using proton nuclear magnetic resonance (1 H-NMR), we analysed the plasma levels of glycoprotein acetyls and the TRL lipidomic profile of 307 patients with dyslipidemia. THP-1-derived macrophages were used as an in vitro model to explore the molecular inflammatory effects mediated by TRL. RESULTS In vivo, higher TRL-TG levels were associated with higher circulating levels of NMR-measured glycoproteins (Glyc-A, Glyc-B and Glyc-F; p < .001). Lipidomic analysis showed that TRL-TG enrichment led to decreased cholesterol and phospholipid content (p < .01), an increase in omega-9, and a decrease in saturated fatty acids (p < .001). THP-1 macrophages exposed to increasing TRL particle concentrations augmented the secretion of IL-1β and TNF-α, which varied based on particle composition. Particles with higher cholesterol and phospholipid contents exerted higher cytokine secretion. The activation of MAPK, Akt/NFκB, and caspase-1 was concurrent with this proinflammatory response. CONCLUSIONS High TRL-TG levels are associated with a higher systemic inflammatory status and increased particle concentrations. In vitro, higher particle numbers increase proinflammatory cytokine secretion, with cholesterol and phospholipid-rich TRL being more proinflammatory.
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Affiliation(s)
- Juan Moreno-Vedia
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
| | - Dídac Llop
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Ricardo Rodríguez-Calvo
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Núria Plana
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Núria Amigó
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Biosfer Teslab SL, Department of Basic Medical Sciences, Universitat Rovira i Virgili (URV), Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
| | - Roser Rosales
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Yaiza Esteban
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Lluís Masana
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Daiana Ibarretxe
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Josefa Girona
- Vascular Medicine and Metabolism Unit, Research Unit on Lipids and Atherosclerosis, Sant Joan University Hospital, Universitat Rovira i Virgili. Institut Investigacio Sanitaria Pere Virgili (IISPV), Reus, Spain
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
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Opęchowska A, Karpiuk K, Zahorodnii A, Harasim-Symbor E, Chabowski A, Konstantynowicz-Nowicka K. Anti-inflammatory effects of cannabidiol in early stages of neuroinflammation induced by high-fat diet in cerebral cortex of rats. Toxicol Appl Pharmacol 2024; 484:116856. [PMID: 38336253 DOI: 10.1016/j.taap.2024.116856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/12/2024]
Abstract
High-fat diet (HFD) contributes to neuroinflammation forming, hence it is crucial to find safe and effective substances that are able to counteract its progress. The anti-inflammatory properties of phytocannabinoids acquired from the Cannabis plant have been widely acknowledged. We evaluated the effects of cannabidiol (CBD) treatment on induced by applying HFD early stages of neuroinflammation in Wistar rat cerebral cortex. In our 7-week experiment, CBD was injected intraperitoneally over the last 14days at a dose of 10 mg/kg of body weight once a day. The level of arachidonic acid, a precursor to pro-inflammatory eicosanoids, decreased in all analysed lipid classes after CBD administration to the HFD group. Moreover, the extent of diminishing the activity of the omega-6 (n-6) fatty acid pathway by CBD was the greatest in diacylglycerols and phospholipids. Surprisingly, CBD was also capable of downregulating the activity of the omega-3 (n-3) pathway. The expression of enzymes involved in the synthesis of the eicosanoids was significantly increased in the HFD group and subsequently lowered by CBD. Significant changes in various cytokines levels were also discovered. Our results strongly suggest the ability of CBD to reduce the formation of lipid inflammation precursors in rat cerebral cortex, as a primary event in the development of neurodegenerative diseases. This can raise hopes for the future use of this cannabinoid for therapeutic purposes since it is a substance lacking lasting and severe side effects.
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Affiliation(s)
- Aleksandra Opęchowska
- Department of Physiology, Medical University of Bialystok, Mickiewicz Str. 2C, Bialystok 15-222, Poland.
| | - Kacper Karpiuk
- Department of Physiology, Medical University of Bialystok, Mickiewicz Str. 2C, Bialystok 15-222, Poland.
| | - Andrii Zahorodnii
- Department of Physiology, Medical University of Bialystok, Mickiewicz Str. 2C, Bialystok 15-222, Poland.
| | - Ewa Harasim-Symbor
- Department of Physiology, Medical University of Bialystok, Mickiewicz Str. 2C, Bialystok 15-222, Poland.
| | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, Mickiewicz Str. 2C, Bialystok 15-222, Poland.
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Adigun OA, Pham TH, Grapov D, Nadeem M, Jewell LE, Galagedara L, Cheema M, Thomas R. Lipid mediated plant immunity in susceptible and tolerant soybean cultivars in response to Phytophthora sojae colonization and infection. BMC Plant Biol 2024; 24:154. [PMID: 38424489 PMCID: PMC10905861 DOI: 10.1186/s12870-024-04808-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 02/08/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Soybean is one of the most cultivated crops globally and a staple food for much of the world's population. The annual global crop losses due to infection by Phytophthora sojae is currently estimated at $20B USD, yet we have limited understanding of the role of lipid mediators in the adaptative strategies used by the host plant to limit infection. Since root is the initial site of this infection, we examined the infection process in soybean root infected with Phytophthora sojae using scanning electron microscopy to observe the changes in root morphology and a multi-modal lipidomics approach to investigate how soybean cultivars remodel their lipid mediators to successfully limit infection by Phytophthora sojae. RESULTS The results reveal the presence of elevated biogenic crystals and more severe damaged cells in the root morphology of the infected susceptible cultivar compared to the infected tolerant cultivars. Furthermore, induced accumulation of stigmasterol was observed in the susceptible cultivar whereas, induced accumulation of phospholipids and glycerolipids occurred in tolerant cultivar. CONCLUSION The altered lipidome reported in this study suggest diacylglycerol and phosphatidic acid mediated lipid signalling impacting phytosterol anabolism appears to be a strategy used by tolerant soybean cultivars to successfully limit infection and colonization by Phytophthora sojae.
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Affiliation(s)
- Oludoyin Adeseun Adigun
- School of Science and the Environment/Boreal Ecosystems and Agricultural Sciences, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada.
| | - Thu Huong Pham
- School of Science and the Environment/Boreal Ecosystems and Agricultural Sciences, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada
| | | | - Muhammad Nadeem
- School of Science and the Environment/Boreal Ecosystems and Agricultural Sciences, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada
| | - Linda Elizabeth Jewell
- St. John's Research and Development Centre, Agriculture and Agri-Food Canada, 204 Brookfield Road, St. John's, Newfoundland and Labrador, A1E 6J5, Canada
| | - Lakshman Galagedara
- School of Science and the Environment/Boreal Ecosystems and Agricultural Sciences, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada
| | - Mumtaz Cheema
- School of Science and the Environment/Boreal Ecosystems and Agricultural Sciences, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada
| | - Raymond Thomas
- Department of Biology/Biotron Climate Change Experimental Research Centre, Western University, London, ON, Canada.
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45
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Wang J, Huang XH, Zhang YY, Nie C, Zhou D, Qin L. Mechanism of salt effect on flavor formation in lightly-salted large yellow croaker by integrated multiple intelligent sensory and untargeted lipidomics analyses. Food Chem 2024; 435:137542. [PMID: 37742462 DOI: 10.1016/j.foodchem.2023.137542] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 09/26/2023]
Abstract
Salt has a great influence on food flavor formation. In this study, electronic tongue and nose, gas chromatography-mass spectrometry, liquid chromatography-mass spectrometry, and lipid oxidation levels were used to investigate the influence of different NaCl concentrations on the flavor formation of lightly salted large yellow croaker. The results showed that salt improves the sensory characteristics of the product. Hexanal, 2,5-octanedione, octanal, 1-octen-3-ol, nonanal, and heptanal were key flavor compounds. Phospholipids containing 18-carbon fatty acids are major flavor precursor substances. The TBARS values in samples increase with the increase of salt levels significantly (p < 0.05). Products marinated in 6% NaCl showed the highest lipase activity. Thus, NaCl promotes the hydrolysis and oxidation of phospholipids by increasing lipase activity to produce key flavor substances. This study provides valuable insights into the effects of NaCl on flavor formation, which may help to regulate the flavor of salt-reduced food.
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Affiliation(s)
- Ji Wang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Xu-Hui Huang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Yu-Ying Zhang
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Chengzhen Nie
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Dayong Zhou
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Lei Qin
- School of Food Science and Technology, State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China.
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46
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Sakuragi T, Kanai R, Otani M, Kikkawa M, Toyoshima C, Nagata S. The role of the C-terminal tail region as a plug to regulate XKR8 lipid scramblase. J Biol Chem 2024; 300:105755. [PMID: 38364890 PMCID: PMC10938166 DOI: 10.1016/j.jbc.2024.105755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/27/2024] [Accepted: 02/10/2024] [Indexed: 02/18/2024] Open
Abstract
XK-related 8 (XKR8), in complex with the transmembrane glycoprotein basigin, functions as a phospholipid scramblase activated by the caspase-mediated cleavage or phosphorylation of its C-terminal tail. It carries a putative phospholipid translocation path of multiple hydrophobic and charged residues in the transmembrane region. It also has a crucial tryptophan at the exoplasmic end of the path that regulates its scrambling activity. We herein investigated the tertiary structure of the human XKR8-basigin complex embedded in lipid nanodiscs at an overall resolution of 3.66 Å. We found that the C-terminal tail engaged in intricate polar and van der Waals interactions with a groove at the cytoplasmic surface of XKR8. These interactions maintained the inactive state of XKR8. Point mutations to disrupt these interactions strongly enhanced the scrambling activity of XKR8, suggesting that the activation of XKR8 is mediated by releasing the C-terminal tail from the cytoplasmic groove. We speculate that the cytoplasmic tail region of XKR8 functions as a plug to prevent the scrambling of phospholipids.
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Affiliation(s)
- Takaharu Sakuragi
- Laboratory of Biochemistry and Immunology, World Premier International Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Ryuta Kanai
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo, Japan
| | - Mayumi Otani
- Laboratory of Biochemistry and Immunology, World Premier International Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Masahide Kikkawa
- Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Chikashi Toyoshima
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo, Japan
| | - Shigekazu Nagata
- Laboratory of Biochemistry and Immunology, World Premier International Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan.
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47
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Toussaint F, Lepeltier E, Franconi F, Pautu V, Jérôme C, Passirani C, Debuigne A. Diversely substituted poly(N-vinyl amide) derivatives towards non-toxic, stealth and pH-responsive lipid nanocapsules. Colloids Surf B Biointerfaces 2024; 235:113788. [PMID: 38335770 DOI: 10.1016/j.colsurfb.2024.113788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/22/2024] [Accepted: 02/03/2024] [Indexed: 02/12/2024]
Abstract
Surface modification of lipid nanocapsules (LNC) is necessary to impart stealth properties to these drug carriers and enhance their accumulation into the tumor microenvironment. While pegylation is commonly used to prolong the circulation time of LNC, the increased presence of anti-PEG antibodies in the human population and the internalization issues associated to the PEG shell are strong incentives to search alternatives. This work describes the development of amphiphilic poly(N-vinyl amide)-based (co)polymers, including pH-responsive ones, and their use as LNC modifiers towards improved drug delivery systems. RAFT polymerization gave access to a series of LNC modifiers composed of poly(N-methyl-N-vinyl acetamide), poly(N-vinyl pyrrolidone) or pH-responsive vinylimidazole-based sequence bearing a variety of lipophilic end-groups, namely octadecyl, dioctadecyl or phospholipid groups, for anchoring to the LNC. Decoration of the LNC with these families of poly(N-vinyl amide) derivatives was achieved via both post-insertion and per-formulation methods. This offered valuable and non-toxic LNC protection from opsonization by complement activation, emphasized the benefit of dioctadecyl in the per-formulation approach and highlighted the great potential of poly(N-methyl-N-vinyl acetamide) as PEG alternative. Moreover, incorporation of imidazole moieties in the shell of the carrier imparted pH-responsiveness to the LNC likely to increase the cellular uptake in the acidic tumor microenvironment, opening up new possibilities in the field of active targeting.
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Affiliation(s)
- François Toussaint
- Center for Education and Research on Macromolecules (CERM), Complex and Entangled Systems from Atoms to Materials Research Unit (CESAM), University of Liège (ULiege), 4000 Liège, Belgium
| | - Elise Lepeltier
- Micro et Nanomédecines Translationnelles (MINT), University of Angers, INSERM 1066, CNRS 6021, Angers, France; Institut Universitaire de France (IUF), France
| | - Florence Franconi
- Micro et Nanomédecines Translationnelles (MINT), University of Angers, INSERM 1066, CNRS 6021, Angers, France
| | - Vincent Pautu
- Micro et Nanomédecines Translationnelles (MINT), University of Angers, INSERM 1066, CNRS 6021, Angers, France
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM), Complex and Entangled Systems from Atoms to Materials Research Unit (CESAM), University of Liège (ULiege), 4000 Liège, Belgium
| | - Catherine Passirani
- Micro et Nanomédecines Translationnelles (MINT), University of Angers, INSERM 1066, CNRS 6021, Angers, France.
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM), Complex and Entangled Systems from Atoms to Materials Research Unit (CESAM), University of Liège (ULiege), 4000 Liège, Belgium.
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48
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Wang L, Xiao Y, Lai W, Jia R, Deng Q, Wang X, Shi H, Yang Y, Zhang B. Micrococcus lacusdianchii sp. nov., an attached bacterium inhibited by metabolites from its symbiotic algae. J Antibiot (Tokyo) 2024; 77:163-169. [PMID: 38148391 DOI: 10.1038/s41429-023-00690-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/31/2023] [Accepted: 11/09/2023] [Indexed: 12/28/2023]
Abstract
A novel actinobacterial strain, designated as JXJ CY 30 T, was isolated from the phycosphere of Microcystis aeruginosa FACHB-905 (Maf) collected from Lake Dianchi, China. The strain was a Gram-stain-positive, aerobic and coccus-shaped actinobacterium. It had alanine, glutamic acid, aspartic acid, and lysine in the peptidoglycan, and mannose, ribose and arabinose in its cell wall sugars, anteiso-C15:0 and iso-C15:0 as the main cellular fatty acids, MK-7 and MK-8 as the major respiratory quinones, and phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol, glycolipid, and an unidentified phospholipid as the polar lipids. The DNA G + C content was 73.08%. Its 16 S rRNA gene sequence shared 99.14%, and 98.75% similarities with Micrococcus flavus DSM 19079 T and M. porci KD337-16T, respectively, and ≤98.41% similarities with other type strains of the genus Micrococcus. It formed independent clade with M. flavus DSM 19079 T on the phylogenetic trees. The digital DNA-DNA hybridization and average nucleotide identity values between strain JXJ CY 30 T and M. flavus DSM 19079 T and M. porci KD337-16T were 48.0% and 92.1%, 25.5% and 83.2%, respectively. These data above indicated that strain JXJ CY 30 T represented a new species of the genus Micrococcus, and the species epithet is proposed as Micrococcus lacusdianchii sp. nov. (type strain JXJ CY 30 T = KCTC 49378 T = CGMCC 1.17508 T). Strain JXJ CY 30 T can potentially provide Maf with various nutrients such as available phosphorus and nitrogen, plant hormones, various vitamins and carotenoids for growth, while it was inhibited by metabolites from its symbiotic algae Maf.
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Affiliation(s)
- Le Wang
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China
| | - Yao Xiao
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China
| | - Wenxin Lai
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China
| | - Ru Jia
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China
| | - Qinglin Deng
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China
| | - Xin Wang
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China
| | - Hongqiu Shi
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China
| | - Yiwen Yang
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China.
| | - Binghuo Zhang
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, 332005, China.
- Jiujiang Key Laboratory for the Development and Utilization of Traditional Chinese Medicine resources in Northwest Jiangxi, Jiujiang, China.
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49
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Abstract
Prolonged or excessive exposure to oxidized phospholipids (OxPLs) generates chronic inflammation. OxPLs are present in atherosclerotic lesions and can be detected in plasma on apolipoprotein B (apoB)-containing lipoproteins. When initially conceptualized, OxPL-apoB measurement in plasma was expected to reflect the concentration of minimally oxidized LDL, but, surprisingly, it correlated more strongly with plasma lipoprotein(a) (Lp(a)) levels. Indeed, experimental and clinical studies show that Lp(a) particles carry the largest fraction of OxPLs among apoB-containing lipoproteins. Plasma OxPL-apoB levels provide diagnostic information on the presence and extent of atherosclerosis and improve the prognostication of peripheral artery disease and first and recurrent myocardial infarction and stroke. The addition of OxPL-apoB measurements to traditional cardiovascular risk factors improves risk reclassification, particularly in patients in intermediate risk categories, for whom improving decision-making is most impactful. Moreover, plasma OxPL-apoB levels predict cardiovascular events with similar or greater accuracy than plasma Lp(a) levels, probably because this measurement reflects both the genetics of elevated Lp(a) levels and the generalized or localized oxidation that modifies apoB-containing lipoproteins and leads to inflammation. Plasma OxPL-apoB levels are reduced by Lp(a)-lowering therapy with antisense oligonucleotides and by lipoprotein apheresis, niacin therapy and bariatric surgery. In this Review, we discuss the role of role OxPLs in the pathophysiology of atherosclerosis and Lp(a) atherogenicity, and the use of OxPL-apoB measurement for improving prognosis, risk reclassification and therapeutic interventions.
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Affiliation(s)
- Sotirios Tsimikas
- Division of Cardiovascular Medicine, University of California San Diego, La Jolla, CA, USA.
| | - Joseph L Witztum
- Division of Endocrinology and Metabolism, University of California San Diego, La Jolla, CA, USA
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50
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Roseli RB, Huang YH, Henriques ST, Kaas Q, Craik DJ. Molecular dynamics simulations support a preference of cyclotide kalata B1 for phosphatidylethanolamine phospholipids. Biochim Biophys Acta Biomembr 2024; 1866:184268. [PMID: 38191035 DOI: 10.1016/j.bbamem.2023.184268] [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: 09/30/2023] [Revised: 12/21/2023] [Accepted: 12/21/2023] [Indexed: 01/10/2024]
Abstract
Kalata B1 (kB1), a naturally occurring cyclotide has been shown experimentally to bind lipid membranes that contain phosphatidylethanolamine (PE) phospholipids. Here, molecular dynamics simulations were used to explore its interaction with two phospholipids, palmitoyloleoylphosphatidylethanolamine (POPE), palmitoyloleoylphosphatidylcholine (POPC), and a heterogeneous membrane comprising POPC/POPE (90:10), to understand the basis for the selectivity of kB1 towards PE phospholipids. The simulations showed that in the presence of only 10 % POPE lipid, kB1 forms a stable binding complex with membrane bilayers. An ionic interaction between the E7 carboxylate group of kB1 and the ammonium group of PE headgroups consistently initiates binding of kB1 to the membrane. Additionally, stable noncovalent interactions such as hydrogen bonding (E7, T8, V10, G11, T13 and N15), cation-π (W23), and CH-π (W23) interactions between specific residues of kB1 and the lipid membrane play an important role in stabilizing the binding. These findings are consistent with a structure-activity relationship study on kB1 where lysine mutagenesis on the bioactive and hydrophobic faces of the peptide abolished membrane-dependent bioactivities. In summary, our simulations suggest the importance of residue E7 (in the bioactive face) in enabling kB1 to recognize and bind selectively to PE-containing phospholipids bilayers through ionic and hydrogen bonding interactions, and of W23 (in the hydrophobic face) for the association and insertion of kB1 into the lipid bilayer through cation-π and CH-π interactions. Overall, this work enhances our understanding of the molecular basis of the membrane binding and bioactivity of this prototypic cyclotide.
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Affiliation(s)
- Ras Baizureen Roseli
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Yen-Hua Huang
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Sónia Troeira Henriques
- School of Biomedical Sciences, Queensland University of Technology, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Quentin Kaas
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - David J Craik
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, Queensland 4072, Australia.
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