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Recuero SDC, Viana NI, Reis ST, Mendes KT, Talib LL, Gattaz WF, Guimarães VR, Silva IA, Pimenta RCP, Camargo JA, Nahas WC, Srougi M, Leite KRM. Phospholipase A2 expression in prostate cancer as a biomarker of good prognosis: A comprehensive study in patients with long follow-up. Urologia 2024:3915603241257362. [PMID: 39051490 DOI: 10.1177/03915603241257362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
BACKGROUND Phospholipase A2 (PLA2) is a large family of enzymes involved in the inflammatory process that catalyzes the hydrolysis of membrane phospholipids, leading to the production of free fatty acids and lysophospholipids, starting the arachidonic acid cascade. Their expression has been related to the behavior of several cancers. Our objective is to search for PLA2 expression in prostate cancer (PCa) tissue that correlates with prognosis and survival. METHODS Using qRT-PCR, we analyzed the expression levels of PLA2G1B, PLA2G2A, PLA2G2D, PLA2G4A, PLA2G4B, PLA2G4C, PLA2G4D, PLA2G4E, PLA2G4F, PLA2G6, PLA2G7, PLA2G16, PNPLA1, and PNPLA2 in PCa tissue from 108 patients submitted to radical prostatectomy, followed by a mean time of 163 months. RESULTS All PLA2 was overexpressed in PCa compared to normal tissue. Interestingly, higher expression of some PLA2 was related to favorable prognostic factors: lower levels of PSA (PLA2G2A, PLA2G4D), lower rates of lymph node metastasis (PLA2G16 and PLA2G1B), and organ-confined disease (PLA2G4A). Most importantly, PLAG4B was independently related to longer disease-free survival. CONCLUSION This is the first study exploring comprehensively the expression levels of PLA2 in PCa, showing that the higher expression of some PLA2 should be used as biomarkers of good prognosis and longer disease-free survival.
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Affiliation(s)
| | - Nayara I Viana
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Sabrina T Reis
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | | | - Leda L Talib
- Department of Psychiatry, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Wagner F Gattaz
- Department of Psychiatry, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Vanessa R Guimarães
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Iran A Silva
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Ruan C P Pimenta
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Juliana A Camargo
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Willian C Nahas
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Miguel Srougi
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
| | - Katia R M Leite
- Department of Urology, Faculdade de Medicina da Universidade de Sao Paulo, Brazil
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Zhai Z, Mu T, Zhao L, Zhu D, Zhong X, Li Y, Liang C, Li W, Zhou Q. Stachydrine represses the proliferation and enhances cell cycle arrest and apoptosis of breast cancer cells via PLA2G2A/DCN axis. Chem Biol Drug Des 2024; 103:e14429. [PMID: 38230769 DOI: 10.1111/cbdd.14429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/03/2023] [Accepted: 12/11/2023] [Indexed: 01/18/2024]
Abstract
Considering the therapeutic efficacy of Stachydrine on breast cancer (BC), this study aims to decipher the relevant mechanism. The effects of Stachydrine on BC cell viability, proliferation and apoptosis were firstly investigated. Then, Bioinformatics was applied to sort out the candidate interacting with Stachydrine as well as its expression and downstream target in BC. Relative expressions of genes of interest as well as proliferation- and apoptosis-related factors in BC cells were quantified through quantitative reverse-transcription PCR and western blot as appropriate. As a result, Stachydrine inhibited the proliferation, down-regulated the expressions of proliferating cell nuclear antigen and CyclinD1, enhanced cell cycle arrest and apoptosis, and up-regulated the levels of Cleaved caspase-3 and Cleaved caspase-9 in BC cells. Phospholipase A2 Group IIA (PLA2G2A) was predicted as the candidate interacting with Stachydrine and to be lowly expressed in BC. PLA2G2A silencing reversed while PLA2G2A overexpression reinforced the effects of Stachydrine. Decorin (DCN) was the downstream target of PLA2G2A and also lowly expressed in BC. PLA2G2A silencing counteracted yet overexpressed PLA2G2A strengthened the promoting effects of Stachydrine on DCN level. Collectively, Stachydrine inhibits the growth of BC cells to promote cell cycle arrest and apoptosis via PLA2G2A/DCN axis.
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Affiliation(s)
- Zhen Zhai
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Tianlong Mu
- Pathology Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Lina Zhao
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Dongsheng Zhu
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Xin Zhong
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Yiliang Li
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Chen Liang
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Wei Li
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
| | - Qingyuan Zhou
- Mammary Department, Dongfang Hospital Beijing University of Chinese Medicine, Beijing, China
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3
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Ghasemitarei M, Ghorbi T, Yusupov M, Zhang Y, Zhao T, Shali P, Bogaerts A. Effects of Nitro-Oxidative Stress on Biomolecules: Part 1-Non-Reactive Molecular Dynamics Simulations. Biomolecules 2023; 13:1371. [PMID: 37759771 PMCID: PMC10527456 DOI: 10.3390/biom13091371] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/04/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Plasma medicine, or the biomedical application of cold atmospheric plasma (CAP), is an expanding field within plasma research. CAP has demonstrated remarkable versatility in diverse biological applications, including cancer treatment, wound healing, microorganism inactivation, and skin disease therapy. However, the precise mechanisms underlying the effects of CAP remain incompletely understood. The therapeutic effects of CAP are largely attributed to the generation of reactive oxygen and nitrogen species (RONS), which play a crucial role in the biological responses induced by CAP. Specifically, RONS produced during CAP treatment have the ability to chemically modify cell membranes and membrane proteins, causing nitro-oxidative stress, thereby leading to changes in membrane permeability and disruption of cellular processes. To gain atomic-level insights into these interactions, non-reactive molecular dynamics (MD) simulations have emerged as a valuable tool. These simulations facilitate the examination of larger-scale system dynamics, including protein-protein and protein-membrane interactions. In this comprehensive review, we focus on the applications of non-reactive MD simulations in studying the effects of CAP on cellular components and interactions at the atomic level, providing a detailed overview of the potential of CAP in medicine. We also review the results of other MD studies that are not related to plasma medicine but explore the effects of nitro-oxidative stress on cellular components and are therefore important for a broader understanding of the underlying processes.
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Affiliation(s)
- Maryam Ghasemitarei
- Department of Physics, Sharif University of Technology, Tehran 14588-89694, Iran
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
| | - Tayebeh Ghorbi
- Department of Physics, Sharif University of Technology, Tehran 14588-89694, Iran
| | - Maksudbek Yusupov
- School of Engineering, New Uzbekistan University, Tashkent 100007, Uzbekistan
- School of Engineering, Central Asian University, Tashkent 111221, Uzbekistan
- Laboratory of Thermal Physics of Multiphase Systems, Arifov Institute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, Tashkent 100125, Uzbekistan
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
| | - Yuantao Zhang
- School of Electrical Engineering, Shandong University, Jinan 250061, China
| | - Tong Zhao
- School of Electrical Engineering, Shandong University, Jinan 250061, China
| | - Parisa Shali
- Research Unit Plasma Technology, Department of Applied Physics, Faculty of Engineering and Agriculture, Ghent University, 9000 Ghent, Belgium
| | - Annemie Bogaerts
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
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4
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Yang P, Cai C, Niu M, Liu X, Wang H, Liang H, Cheng B, Zhang Z, Chen F, Xie J, Qi Z, Yang G, Shi Q, Wang E, Lei C, Chen H, Ru B, Huang Y. Effect of copy number variation of PLA2G2A gene to growth traits in Chinese cattle. Gene 2022; 809:146014. [PMID: 34655722 DOI: 10.1016/j.gene.2021.146014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 08/06/2021] [Accepted: 10/11/2021] [Indexed: 11/19/2022]
Abstract
SIMPLE SUMMARY As a member of genetic polymorphism, copy number variation has been a commonly used method in the world for investigating effect of genetic polymorphism on gene expression. Effect of genetic polymorphism made on livestock development has been more and more important in beef cattle molecular breeding. The characteristics of Chinese cattle are excellent meat quality, tolerant to rough feeding, good environmental adaptability and so on. But there are some obvious weaknesses still exist in the process of cattle growth and development, such as weak hindquarters and growth slowly. To improve the growth performance and market competitiveness of Chinese cattle, a lot of studies have been made about finding and investigating effective molecular marker. In this study, Q-PCR and data association analysis were used for PLA2G2A gene copy number variation detection and related effect analysis in Chinese cattle. Results showed that PLA2G2A gene has a significant effect on two breeds of Chinese cattle on growth traits, which could be a basic materials and effective information of cattle molecular markers breeding. PLA2G2A, member of secreted phospholipases A2 (sPLA2) in superfamily of phospholipase A2, could catalyze the process of glycerophospholipids hydrolysis from position of sn-2 acyl with the release of free fatty acids and lysophospholipids. Researches about PLA2G2A gene are mostly focus on disease, including tumors and diabetes, the number of study occurred on animal breeding is weak. In this study, blood samples were collected from five breeds of Chinese cattle (Qingchuan cattle, Xianan cattle, Yunling cattle, Pinan cattle and Guyuan cattle) for PLA2G2A gene CNV type detection. SPSS 20.0 software and method of ANOVA were used to analyzed the association between types of CNV and growth traits. Results reveal that the distribution of different copy number types in different cattle breeds is different. In QC, XN and GY cattle, the frequencies of Deletion and Duplication are about 40%; in YL cattle, the frequency of Deletion type exceeds 60%; in PN cattle, the frequency of Duplication is closed to 80%. Association analysis indicate that CNV of PLA2G2A gene showed a positive effect in cattle growth: in QC cattle, Chest depth with Normal type copy number possess a increased trend (P < 0.05); individuals with Deletion type copy number have better performance on Height at sacrum, Heart girth and Body height in GY cattle (P < 0.05). The functional role and molecular mechanism of PLA2G2A gene in animal growth and development are still unclear, and it is necessary for processing a further research. This research aims to provide basic materials for molecular breeding of Chinese cattle.
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Affiliation(s)
- Peng Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Cuicui Cai
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China; Guyuan Branch of Ningxia Academy of Agriculture and Forestry Sciences, Guyuan, Ningxia 756000, People's Republic of China
| | - Mengxiao Niu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Xian Liu
- Henan Provincial Animal Husbandry General Station, Zhengzhou, Henan 450008, People's Republic of China
| | - Hongli Wang
- Jiaxian Animal Husbandry Bureau, Jiaxian, Henan 467100, People's Republic of China
| | - Huifeng Liang
- Jiaxian Animal Husbandry Bureau, Jiaxian, Henan 467100, People's Republic of China
| | - Baowei Cheng
- Jiaxian Animal Husbandry Bureau, Jiaxian, Henan 467100, People's Republic of China
| | - Zijing Zhang
- Institute of Animal Husbandry and Veterinary Science, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002, People's Republic of China
| | - Fuying Chen
- Institute of Animal Husbandry and Veterinary Science, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002, People's Republic of China
| | - Jianliang Xie
- Guyuan Branch of Ningxia Academy of Agriculture and Forestry Sciences, Guyuan, Ningxia 756000, People's Republic of China
| | - Zengfang Qi
- Jiaxian Animal Husbandry Bureau, Jiaxian, Henan 467100, People's Republic of China
| | - Guojie Yang
- Jiaxian Animal Husbandry Bureau, Jiaxian, Henan 467100, People's Republic of China
| | - Qiaoting Shi
- Institute of Animal Husbandry and Veterinary Science, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002, People's Republic of China
| | - Eryao Wang
- Institute of Animal Husbandry and Veterinary Science, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002, People's Republic of China
| | - Chuzhao Lei
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Hong Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Baorui Ru
- Henan Provincial Animal Husbandry General Station, Zhengzhou, Henan 450008, People's Republic of China.
| | - Yongzhen Huang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
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Moreira V, Leiguez E, Janovits PM, Maia-Marques R, Fernandes CM, Teixeira C. Inflammatory Effects of Bothrops Phospholipases A 2: Mechanisms Involved in Biosynthesis of Lipid Mediators and Lipid Accumulation. Toxins (Basel) 2021; 13:toxins13120868. [PMID: 34941706 PMCID: PMC8709003 DOI: 10.3390/toxins13120868] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/19/2021] [Accepted: 11/30/2021] [Indexed: 02/07/2023] Open
Abstract
Phospholipases A2s (PLA2s) constitute one of the major protein groups present in the venoms of viperid and crotalid snakes. Snake venom PLA2s (svPLA2s) exhibit a remarkable functional diversity, as they have been described to induce a myriad of toxic effects. Local inflammation is an important characteristic of snakebite envenomation inflicted by viperid and crotalid species and diverse svPLA2s have been studied for their proinflammatory properties. Moreover, based on their molecular, structural, and functional properties, the viperid svPLA2s are classified into the group IIA secreted PLA2s, which encompasses mammalian inflammatory sPLA2s. Thus, research on svPLA2s has attained paramount importance for better understanding the role of this class of enzymes in snake envenomation and the participation of GIIA sPLA2s in pathophysiological conditions and for the development of new therapeutic agents. In this review, we highlight studies that have identified the inflammatory activities of svPLA2s, in particular, those from Bothrops genus snakes, which are major medically important snakes in Latin America, and we describe recent advances in our collective understanding of the mechanisms underlying their inflammatory effects. We also discuss studies that dissect the action of these venom enzymes in inflammatory cells focusing on molecular mechanisms and signaling pathways involved in the biosynthesis of lipid mediators and lipid accumulation in immunocompetent cells.
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Affiliation(s)
- Vanessa Moreira
- Departamento de Farmacologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo 04044-020, Brazil;
| | - Elbio Leiguez
- Laboratório de Farmacologia, Instituto Butantan, Sao Paulo 05503-900, Brazil; (E.L.); (P.M.J.); (R.M.-M.); (C.M.F.)
| | - Priscila Motta Janovits
- Laboratório de Farmacologia, Instituto Butantan, Sao Paulo 05503-900, Brazil; (E.L.); (P.M.J.); (R.M.-M.); (C.M.F.)
| | - Rodrigo Maia-Marques
- Laboratório de Farmacologia, Instituto Butantan, Sao Paulo 05503-900, Brazil; (E.L.); (P.M.J.); (R.M.-M.); (C.M.F.)
| | - Cristina Maria Fernandes
- Laboratório de Farmacologia, Instituto Butantan, Sao Paulo 05503-900, Brazil; (E.L.); (P.M.J.); (R.M.-M.); (C.M.F.)
| | - Catarina Teixeira
- Laboratório de Farmacologia, Instituto Butantan, Sao Paulo 05503-900, Brazil; (E.L.); (P.M.J.); (R.M.-M.); (C.M.F.)
- Correspondence:
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Scott KF, Mann TJ, Fatima S, Sajinovic M, Razdan A, Kim RR, Cooper A, Roohullah A, Bryant KJ, Gamage KK, Harman DG, Vafaee F, Graham GG, Church WB, Russell PJ, Dong Q, de Souza P. Human Group IIA Phospholipase A 2-Three Decades on from Its Discovery. Molecules 2021; 26:molecules26237267. [PMID: 34885848 PMCID: PMC8658914 DOI: 10.3390/molecules26237267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/21/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022] Open
Abstract
Phospholipase A2 (PLA2) enzymes were first recognized as an enzyme activity class in 1961. The secreted (sPLA2) enzymes were the first of the five major classes of human PLA2s to be identified and now number nine catalytically-active structurally homologous proteins. The best-studied of these, group IIA sPLA2, has a clear role in the physiological response to infection and minor injury and acts as an amplifier of pathological inflammation. The enzyme has been a target for anti-inflammatory drug development in multiple disorders where chronic inflammation is a driver of pathology since its cloning in 1989. Despite intensive effort, no clinically approved medicines targeting the enzyme activity have yet been developed. This review catalogues the major discoveries in the human group IIA sPLA2 field, focusing on features of enzyme function that may explain this lack of success and discusses future research that may assist in realizing the potential benefit of targeting this enzyme. Functionally-selective inhibitors together with isoform-selective inhibitors are necessary to limit the apparent toxicity of previous drugs. There is also a need to define the relevance of the catalytic function of hGIIA to human inflammatory pathology relative to its recently-discovered catalysis-independent function.
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Affiliation(s)
- Kieran F. Scott
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (T.J.M.); (S.F.); (A.C.); (A.R.); (P.d.S.)
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
- Correspondence: ; Tel.: +61-2-8738-9026
| | - Timothy J. Mann
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (T.J.M.); (S.F.); (A.C.); (A.R.); (P.d.S.)
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
| | - Shadma Fatima
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (T.J.M.); (S.F.); (A.C.); (A.R.); (P.d.S.)
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
- School of Biotechnology and Biological Sciences, University of New South Wales (UNSW Sydney), Sydney, NSW 2052, Australia;
| | - Mila Sajinovic
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
| | - Anshuli Razdan
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
| | - Ryung Rae Kim
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia; (R.R.K.); (W.B.C.)
| | - Adam Cooper
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (T.J.M.); (S.F.); (A.C.); (A.R.); (P.d.S.)
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
- Liverpool Cancer Therapy Centre, Liverpool Hospital, Liverpool, NSW 2170, Australia
| | - Aflah Roohullah
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (T.J.M.); (S.F.); (A.C.); (A.R.); (P.d.S.)
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
- Liverpool Cancer Therapy Centre, Liverpool Hospital, Liverpool, NSW 2170, Australia
| | - Katherine J. Bryant
- School of Photovoltaic and Renewable Energy Engineering, UNSW Sydney, Sydney, NSW 2052, Australia;
| | - Kasuni K. Gamage
- School of Science, Western Sydney University, Campbelltown, NSW 2560, Australia; (K.K.G.); (D.G.H.)
| | - David G. Harman
- School of Science, Western Sydney University, Campbelltown, NSW 2560, Australia; (K.K.G.); (D.G.H.)
| | - Fatemeh Vafaee
- School of Biotechnology and Biological Sciences, University of New South Wales (UNSW Sydney), Sydney, NSW 2052, Australia;
- UNSW Data Science Hub, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Garry G. Graham
- Department of Clinical Pharmacology, St Vincent’s Hospital Sydney, Darlinghurst, NSW 2010, Australia;
- School of Medical Sciences, UNSW Sydney, Sydney, NSW 2052, Australia
| | - W. Bret Church
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia; (R.R.K.); (W.B.C.)
| | - Pamela J. Russell
- Australian Prostate Cancer Research Centre—QUT, Brisbane, QLD 4102, Australia;
| | - Qihan Dong
- Chinese Medicine Anti-Cancer Evaluation Program, Greg Brown Laboratory, Central Clinical School and Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia;
| | - Paul de Souza
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia; (T.J.M.); (S.F.); (A.C.); (A.R.); (P.d.S.)
- Ingham Institute of Applied Medical Research, Liverpool, NSW 2170, Australia; (M.S.); (A.R.)
- School of Medicine, UNSW Sydney, Sydney, NSW 2052, Australia
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7
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Nasri Z, Memari S, Wenske S, Clemen R, Martens U, Delcea M, Bekeschus S, Weltmann K, von Woedtke T, Wende K. Singlet-Oxygen-Induced Phospholipase A 2 Inhibition: A Major Role for Interfacial Tryptophan Dioxidation. Chemistry 2021; 27:14702-14710. [PMID: 34375468 PMCID: PMC8596696 DOI: 10.1002/chem.202102306] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Indexed: 11/16/2022]
Abstract
Several studies have revealed that various diseases such as cancer have been associated with elevated phospholipase A2 (PLA2 ) activity. Therefore, the regulation of PLA2 catalytic activity is undoubtedly vital. In this study, effective inactivation of PLA2 due to reactive species produced from cold physical plasma as a source to model oxidative stress is reported. We found singlet oxygen to be the most relevant active agent in PLA2 inhibition. A more detailed analysis of the plasma-treated PLA2 identified tryptophan 128 as a hot spot, rich in double oxidation. The significant dioxidation of this interfacial tryptophan resulted in an N-formylkynurenine product via the oxidative opening of the tryptophan indole ring. Molecular dynamics simulation indicated that the efficient interactions between the tryptophan residue and phospholipids are eliminated following tryptophan dioxidation. As interfacial tryptophan residues are predominantly involved in the attaching of membrane enzymes to the bilayers, tryptophan dioxidation and indole ring opening leads to the loss of essential interactions for enzyme binding and, consequently, enzyme inactivation.
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Affiliation(s)
- Zahra Nasri
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Seyedali Memari
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
- Institute of Anatomy and Cell BiologyUniversity Medicine GreifswaldFriedrich-Loeffler-Straße 23cGreifswald17487Germany
| | - Sebastian Wenske
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Ramona Clemen
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Ulrike Martens
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Straße 4Greifswald17489Germany
- Center for Innovation Competence (ZIK) HIKE (Humoral Immune Reactions in Cardiovascular Diseases)University of GreifswaldGreifswaldFleischmannstraße 4217489Germany
| | - Mihaela Delcea
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Straße 4Greifswald17489Germany
- Center for Innovation Competence (ZIK) HIKE (Humoral Immune Reactions in Cardiovascular Diseases)University of GreifswaldGreifswaldFleischmannstraße 4217489Germany
| | - Sander Bekeschus
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Klaus‐Dieter Weltmann
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
| | - Thomas von Woedtke
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
- Institute for Hygiene and Environmental MedicineUniversity Medicine GreifswaldGreifswaldWalther-Rathenau-Straße 49 A17489Germany
| | - Kristian Wende
- Center for Innovation Competence (ZIK) plasmatisLeibniz Institute for Plasma Science and Technology (INP)Felix-Hausdorff-Straße 217489GreifswaldGermany
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8
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Zhang Q, Zhou J, Zhou J, Fang RH, Gao W, Zhang L. Lure-and-kill macrophage nanoparticles alleviate the severity of experimental acute pancreatitis. Nat Commun 2021; 12:4136. [PMID: 34230486 PMCID: PMC8260623 DOI: 10.1038/s41467-021-24447-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 06/17/2021] [Indexed: 02/08/2023] Open
Abstract
Acute pancreatitis is a disease associated with suffering and high lethality. Although the disease mechanism is unclear, phospholipase A2 (PLA2) produced by pancreatic acinar cells is a known pathogenic trigger. Here, we show macrophage membrane-coated nanoparticles with a built-in 'lure and kill' mechanism (denoted 'MΦ-NP(L&K)') for the treatment of acute pancreatitis. MΦ-NP(L&K) are made with polymeric cores wrapped with natural macrophage membrane doped with melittin and MJ-33. The membrane incorporated melittin and MJ-33 function as a PLA2 attractant and a PLA2 inhibitor, respectively. These molecules, together with membrane lipids, work synergistically to lure and kill PLA2 enzymes. These nanoparticles can neutralize PLA2 activity in the sera of mice and human patients with acute pancreatitis in a dose-dependent manner and suppress PLA2-induced inflammatory response accordingly. In mouse models of both mild and severe acute pancreatitis, MΦ-NP(L&K) confer effective protection against disease-associated inflammation, tissue damage and lethality. Overall, this biomimetic nanotherapeutic strategy offers an anti-PLA2 treatment option that might be applicable to a wide range of PLA2-mediated inflammatory disorders.
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Affiliation(s)
- Qiangzhe Zhang
- Department of Nanoengineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Julia Zhou
- Department of Nanoengineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Jiarong Zhou
- Department of Nanoengineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Ronnie H Fang
- Department of Nanoengineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Weiwei Gao
- Department of Nanoengineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Liangfang Zhang
- Department of Nanoengineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA.
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Wei Y, Asbell PA. sPLA 2-IIa participates in ocular surface inflammation in humans with dry eye disease. Exp Eye Res 2020; 201:108209. [PMID: 33011237 DOI: 10.1016/j.exer.2020.108209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 08/21/2020] [Accepted: 08/30/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE To determine the roles of secretory phospholipase A2-IIa (sPLA2-IIa) in the inflammatory responses of the compromised ocular surface. METHODS Conjunctival impression cytology (IC) samples and tears were collected from patients with mild to severe non-Sjogren's dry eye disease (DED) and normal controls. The IC samples were analyzed for transcription of sPLA2-IIa and inflammatory cytokine/chemokine genes using quantitative real-time RT-PCR (qRT2-PCR) and pathway-focus PCR-array. The tear samples were analyzed for 13 inflammatory cytokines and chemokines with Millipore 13-Plex kit. Finally, sPLA2-IIa-treated human conjunctival epithelial cell (HCjE) cultures were analyzed with a pathway-focused PCR array. RESULTS Transcription of sPLA2-IIa was significantly increased in severe DED patients as compared to those of mild DED patients and normal controls. The transcription of inflammatory cytokines (IL-1β, IL-4, IL-6, IL-17, TNF-α, IFN-γ), chemokines (IL-8, CXCL10, CXCL11, CXCL-14, CCR6, LTB) and matrix metalloproteinase 9 (MMP9) were simultaneously increased in the same IC samples of DED. Concentrations of IL-6 and IL-8 in tears were significantly higher in DED patients than those of the controls and positively correlated to DED severity scores. On the other hand, IL-2, IL-4, IL-10, IL-12 and IFN-γ were significantly lower in DED patients than those in the controls and inversely correlated to DEWS scores. Single treatment of sPLA2-IIa, IL-1β or TNF-α of HCjE cells induced minimal to no PGE2 production. When sPLA2-IIa was added to HCjE cells that were pre-treated with pro-inflammatory cytokines (TNF-α or IL-1β), significant stimulation of PGE2 production was observed, concurrent with the extensive transcriptional changes of many inflammatory cytokines/chemokines and their receptors. CONCLUSION sPLA2-IIa activity was elevated and not only associated with inflammatory changes in DED patient samples, but was also found to cooperate with TNF- α and IL-1β to induce inflammatory response in human conjunctival epithelial cells. Understanding the roles of sPLA2-IIa in ocular surface inflammation may lead to better strategies for the treatment of chronic inflammation associated with DED and other ocular inflammatory conditions.
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Affiliation(s)
- Y Wei
- Department Ophthalmology, The Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Department Ophthalmology, Hamilton Eye Institute, College of Medicine, University of Tennessee, Memphis, TN, 38163, USA.
| | - P A Asbell
- Department Ophthalmology, The Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Department Ophthalmology, Hamilton Eye Institute, College of Medicine, University of Tennessee, Memphis, TN, 38163, USA
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