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Nepomuceno M, Monllor P, Cardells MJ, Ftara A, Magallon M, Dasí F, Badia MC, Viña J, Lloret A. Redox-associated changes in healthy individuals at risk of Alzheimer's disease. A ten-year follow-up study. Free Radic Biol Med 2024; 215:56-63. [PMID: 38417685 DOI: 10.1016/j.freeradbiomed.2024.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/01/2024]
Abstract
Carrying an allele 4 of the apolipoprotein E (ApoE) is the best-established genetic risk factor to develop Alzheimer's disease (AD). Fifty percent of ApoE4/4 individuals develop the disease at 70 years of age. ApoE3/4 carriers have a lower risk of developing the disease, still 50% of them suffer AD at around 80 years. In a previous study we showed that healthy young individuals, who had a parent with AD and were carriers of at least one ApoE4 allele displayed reductive stress. This was evidenced as a decrease in oxidative markers, such as oxidized glutathione, p-p38, and NADP+/NADPH ratio, and an increase of antioxidant enzymes, such as glutathione peroxidase (Gpx1) and both the catalytic and regulatory subunits of glutamyl-cysteinyl (GCLM and GCLC). Moreover, we found an increase in stress-related proteins involved in tau physiopathology. Now, 10 years later, we have conducted a follow-up study measuring the same parameters in the same cohort. Our results show that reductive stress has reversed, as we could now observe an increase in lipid peroxidation and in the oxidation of glutathione along with a decrease in the expression of Gpx1 and SOD1 antioxidant enzymes in ApoE4 carriers. Furthermore, we found an increase in plasma levels of IL1β levels and in PKR (eukaryotic translation initiation factor 2 alpha kinase 2) gene expression in isolated lymphocytes. Altogether, our results suggest that, in the continuum of Alzheimer's disease, people at risk of developing the disease go through different redox phases, from stablished reductive stress to oxidative stress.
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Affiliation(s)
- Mariana Nepomuceno
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain
| | - Paloma Monllor
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain; Internal Medicine Department, University Hospital of La Plana, Vila-Real, Spain
| | - Maria Jose Cardells
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain
| | - Artemis Ftara
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain
| | - Maria Magallon
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain
| | - Francisco Dasí
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain
| | | | - Jose Viña
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain.
| | - Ana Lloret
- Department of Physiology, Faculty of Medicine, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, University of Valencia, Valencia, Spain.
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Deng Y, Li C, Huang L, Xiong P, Li Y, Liu Y, Li S, Chen W, Yin Q, Li Y, Yang Q, Peng H, Wu S, Wang X, Tong Q, Ouyang H, Hu D, Liu X, Li L, You J, Sun Z, Lu X, Xiao Z, Deng Y, Zhao H. Single-cell landscape of the cellular microenvironment in three different colonic polyp subtypes in children. Clin Transl Med 2024; 14:e1535. [PMID: 38264936 PMCID: PMC10807352 DOI: 10.1002/ctm2.1535] [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: 08/29/2023] [Revised: 12/12/2023] [Accepted: 12/26/2023] [Indexed: 01/25/2024] Open
Abstract
BACKGROUND The understanding of the heterogeneous cellular microenvironment of colonic polyps in paediatric patients with solitary juvenile polyps (SJPs), polyposis syndrome (PJS) and Peutz-Jeghers syndrome (PJS) remains limited. METHODS We conducted single-cell RNA sequencing and multiplexed immunohistochemistry (mIHC) analyses on both normal colonic tissue and different types of colonic polyps obtained from paediatric patients. RESULTS We identified both shared and disease-specific cell subsets and expression patterns that played important roles in shaping the unique cellular microenvironments observed in each polyp subtype. As such, increased myeloid, endothelial and epithelial cells were the most prominent features of SJP, JPS and PJS polyps, respectively. Noticeably, memory B cells were increased, and a cluster of epithelial-mesenchymal transition (EMT)-like colonocytes existed across all polyp subtypes. Abundant neutrophil infiltration was observed in SJP polyps, while CX3CR1hi CD8+ T cells and regulatory T cells (Tregs) were predominant in SJP and JPS polyps, while GZMAhi natural killer T cells were predominant in PJS polyps. Compared with normal colonic tissues, myeloid cells exhibited specific induction of genes involved in chemotaxis and interferon-related pathways in SJP polyps, whereas fibroblasts in JPS polyps had upregulation of myofiber-associated genes and epithelial cells in PJS polyps exhibited induction of a series of nutrient absorption-related genes. In addition, the TNF-α response was uniformly upregulated in most cell subsets across all polyp subtypes, while endothelial cells and fibroblasts separately showed upregulated cell adhesion and EMT signalling in SJP and JPS polyps. Cell-cell interaction network analysis showed markedly enhanced intercellular communication, such as TNF, VEGF, CXCL and collagen signalling networks, among most cell subsets in polyps, especially SJP and JPS polyps. CONCLUSION These findings strengthen our understanding of the heterogeneous cellular microenvironment of polyp subtypes and identify potential therapeutic approaches to reduce the recurrence of polyps in children.
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Affiliation(s)
- Yafei Deng
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
- The School of PediatricsHengyang Medical SchoolUniversity of South ChinaChangshaChina
| | - Canlin Li
- Department of Digestive NutritionHunan Children's HospitalChangshaChina
| | - Lanlan Huang
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
- The School of PediatricsHengyang Medical SchoolUniversity of South ChinaChangshaChina
| | - Peiwen Xiong
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Yana Li
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Yongjie Liu
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Songyang Li
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Weijian Chen
- Department of PathologyHunan Children's HospitalChangshaChina
| | - Qiang Yin
- Department of Pediatric SurgeryHunan Children's HospitalChangshaChina
| | - Yong Li
- Department of Pediatric SurgeryHunan Children's HospitalChangshaChina
| | - Qinglan Yang
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Hongyan Peng
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Shuting Wu
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Xiangyu Wang
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Qin Tong
- The School of PediatricsHengyang Medical SchoolUniversity of South ChinaChangshaChina
- Department of Digestive NutritionHunan Children's HospitalChangshaChina
| | - Hongjuan Ouyang
- Department of Digestive NutritionHunan Children's HospitalChangshaChina
| | - Die Hu
- Department of Clinical HematologyCollege of Pharmacy and Laboratory Medicine ScienceArmy Medical UniversityChongqingChina
| | - Xinjia Liu
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
- The School of PediatricsHengyang Medical SchoolUniversity of South ChinaChangshaChina
| | - Liping Li
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Jieyu You
- Department of Digestive NutritionHunan Children's HospitalChangshaChina
| | - Zhiyi Sun
- Department of BiostatisticsSchool of Public HealthUniversity of MichiganAnn ArborMichiganUSA
| | - Xiulan Lu
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Zhenghui Xiao
- Pediatrics Research Institute of Hunan Province and Hunan Provincial Key Laboratory of Children's Emergency MedicineHunan Children's HospitalChangshaChina
| | - Youcai Deng
- Department of Clinical HematologyCollege of Pharmacy and Laboratory Medicine ScienceArmy Medical UniversityChongqingChina
| | - Hongmei Zhao
- Department of Digestive NutritionHunan Children's HospitalChangshaChina
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Vo HD, Forero-Quintero LS, Aguilera LU, Munsky B. Analysis and design of single-cell experiments to harvest fluctuation information while rejecting measurement noise. Front Cell Dev Biol 2023; 11:1133994. [PMID: 37305680 PMCID: PMC10250612 DOI: 10.3389/fcell.2023.1133994] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 05/10/2023] [Indexed: 06/13/2023] Open
Abstract
Introduction: Despite continued technological improvements, measurement errors always reduce or distort the information that any real experiment can provide to quantify cellular dynamics. This problem is particularly serious for cell signaling studies to quantify heterogeneity in single-cell gene regulation, where important RNA and protein copy numbers are themselves subject to the inherently random fluctuations of biochemical reactions. Until now, it has not been clear how measurement noise should be managed in addition to other experiment design variables (e.g., sampling size, measurement times, or perturbation levels) to ensure that collected data will provide useful insights on signaling or gene expression mechanisms of interest. Methods: We propose a computational framework that takes explicit consideration of measurement errors to analyze single-cell observations, and we derive Fisher Information Matrix (FIM)-based criteria to quantify the information value of distorted experiments. Results and Discussion: We apply this framework to analyze multiple models in the context of simulated and experimental single-cell data for a reporter gene controlled by an HIV promoter. We show that the proposed approach quantitatively predicts how different types of measurement distortions affect the accuracy and precision of model identification, and we demonstrate that the effects of these distortions can be mitigated through explicit consideration during model inference. We conclude that this reformulation of the FIM could be used effectively to design single-cell experiments to optimally harvest fluctuation information while mitigating the effects of image distortion.
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Affiliation(s)
- Huy D. Vo
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, United States
| | - Linda S. Forero-Quintero
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, United States
| | - Luis U. Aguilera
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, United States
| | - Brian Munsky
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, United States
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO, United States
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Huang H, Wei S, Wu X, Zhang M, Zhou B, Huang D, Dong W. Dihydrokaempferol attenuates CCl 4-induced hepatic fibrosis by inhibiting PARP-1 to affect multiple downstream pathways and cytokines. Toxicol Appl Pharmacol 2023; 464:116438. [PMID: 36841340 DOI: 10.1016/j.taap.2023.116438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 02/27/2023]
Abstract
The pathophysiological mechanism of hepatic fibrosis (HF) is related to the excessive activation of the DNA repair enzyme poly ADP-ribose polymerase-1 (PARP-1). The drugs, targeting PARP-1, are scarce. Therefore, the lead compound, moderately inhibiting PARP-1, with anti-HF properties should be identified. This study screened dihydrokaempferol (DHK) from herbs based on preliminary studies to intervene in a CCl4-induced liver injury and HF model in mice. In vitro, the expression levels of PARP-1-regulated related proteins and phosphorylation were examined. The binding pattern of DHK and PARP-1 was analyzed using molecular docking and molecular dynamics platforms. The results showed that DHK could significantly attenuate CCl4-induced liver injury and HF in mice. Moreover, it could also attenuate the toxic effects of CCl4 on HepG2 and inhibit α-SMA and Collagen 1/3 synthesis of LX-2 cells in-vitro. Molecular docking revealed that DHK could competitively bind to the Glu-988 and His-862 residues of the upstream DNA repair enzyme PARP-1, moderately inhibiting its overactivation. This led to maintaining NAD+ levels and energy metabolism in hepatocytes and inhibiting the activation of PARP-1-regulated downstream signaling pathways (TGF-β1, etc.), related proteins (p-Smd2/3, etc.), and inflammatory mediators while acting indirectly. Thus, DHK could attenuate CCl4-induced liver injury and HF in mice in a different mechanism from those of the existing reported flavonoids. It was associated with inhibiting the expression of downstream pathways and related cytokines by competitively binding to PARP-1. This study might provide a basis and direction for the design and exploration of anti-HF lead compounds.
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Affiliation(s)
- Hancheng Huang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei, China
| | - Shuchun Wei
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei, China
| | - Xiaohan Wu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China; Key Laboratory of Hubei Province for Digestive System Disease, Wuhan, Hubei, China
| | - Mengke Zhang
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Benhong Zhou
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Debin Huang
- Department of Pharmacy, Hubei Minzu University, Enshi, Hubei, China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.
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Han M, Yang F, Zhang K, Ni J, Zhao X, Chen X, Zhang Z, Wang H, Lu J, Zhang Y. Antioxidant, Anti-Inflammatory and Anti-Diabetic Activities of Tectona grandis Methanolic Extracts, Fractions, and Isolated Compounds. Antioxidants (Basel) 2023; 12:antiox12030664. [PMID: 36978912 PMCID: PMC10044725 DOI: 10.3390/antiox12030664] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/23/2023] [Accepted: 03/02/2023] [Indexed: 03/11/2023] Open
Abstract
Tectona grandis is a traditional Dai medicine plant belonging to the Lamiaceae family, which can be used to treat malaria, inflammation, diabetes, liver disease, bronchitis, tumors, cholelithiasis, jaundice, skin disease and as an anti-helminthic. To find more novel therapeutic agents contained in this medicinal plant, the antioxidant, anti-inflammatory and anti-diabetic activities of T. grandis methanolic extract, fractions and compounds were evaluated. In this study, 26 compounds were isolated from the leaves and branches of T. grandis. Their structures were identified based on extensive spectral experiments, including NMR, ESI-MS and comparison with published spectral data. Among them, compounds 1–2, 4–6, 9–14 and 16–22 were reported for the first time for this plant. The antioxidant activity screening results showed that compounds 5, 15 and 23 had potent antioxidant capacities, with SC50 values from 0.32 to 9.92 µmol/L, 0.92 to 1.10 mmol Trolox/L and 1.02 to 1.22 mmol Trolox/L for DPPH, ABTS and FRAP, respectively. In addition, their anti-inflammatory effects were investigated by releasing TNF-α, IL-1β and IL-6 through the use of mouse monocytic macrophages (RAW 264.7). Compounds 1, 13, 18 and 23 had the effects of reducing the expression of inflammatory factors. Compounds 13 and 18 were reported for the first time for their anti-inflammatory activities. Furthermore, the methanolic extract (ME), petroleum ether extract (PEE) and EtOAc extract (EAE) of T. grandis showed significant glucose uptake activities; compounds 21 and 23 significantly promoted glucose uptake of 3T3-L1 adipocytes at 40 µM. Meanwhile, compounds 4, 5 and 7 showed significant inhibitory activities against α-glucosidase, with IC50 values of 14.16 ± 0.34 µmol/L, 19.29 ± 0.26 µmol/L and 3.04 ± 0.08 µmol/L, respectively. Compounds 4 and 5 were reported for the first time for their α-glucosidase inhibitory activities. Our investigation explored the possible therapeutic material basis of T. grandis to prevent oxidative stress and related diseases, especially inflammation and diabetes.
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Affiliation(s)
- Mei Han
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Faculty of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fengxian Yang
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
| | - Kun Zhang
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Faculty of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiyan Ni
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Faculty of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xia Zhao
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
| | - Xuelin Chen
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Faculty of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhennan Zhang
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Faculty of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hanlei Wang
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Faculty of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Lu
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Faculty of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yumei Zhang
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
- Correspondence: ; Tel.: +86-871-6511-2766
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Boyle DL, Prideaux EB, Hillman J, Wang W, Firestein GS. Improving Transcriptome Fidelity Following Synovial Tissue Disaggregation. Front Med (Lausanne) 2022; 9:919748. [PMID: 36035425 PMCID: PMC9400013 DOI: 10.3389/fmed.2022.919748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
Objective To improve the fidelity of the cellular transcriptome of disaggregated synovial tissue for applications such as single-cell RNA sequencing (scRNAseq) by modifying the disaggregation technique. Methods Osteoarthritis (OA) and rheumatoid arthritis (RA) synovia were collected at arthroplasty. RNA was extracted from intact or disaggregated replicate pools of tissue fragments. Disaggregation was performed with either a proprietary protease, Liberase TL (Lib) as a reference method, Liberase TL with an RNA polymerase inhibitor flavopyridol (Flavo), or a cold digestion with subtilisin A (SubA). qPCR on selected markers and RNAseq were used to compare disaggregation methods using the original intact tissue as reference. Results Disaggregated cell yield and viability were similar for all three methods with some viability improved (SubA). Candidate gene analysis showed that Lib alone dramatically increased expression of several genes involved in inflammation and immunity compared with intact tissue and was unable to differentiate RA from OA. Both alternative methods reduced the disaggregation induced changes. Unbiased analysis using bulk RNAseq and the 3 protocols confirmed the candidate gene studies and showed that disaggregation-induced changes were largely prevented. The resultant data improved the ability to distinguish RA from OA synovial transcriptomes. Conclusions Disaggregation of connective tissues such as synovia has complex and selective effects on the transcriptome. We found that disaggregation with an RNA polymerase inhibitor or using a cold enzyme tended to limit induction of some relevant transcripts during tissue processing. The resultant data in the disaggregated transcriptome better represented the in situ transcriptome. The specific method chosen can be tailored to the genes of interest and the hypotheses being tested in order to optimize the fidelity of technique for applications based on cell suspensions such as sorted populations or scRNAseq.
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Affiliation(s)
- David L. Boyle
- Department of Medicine, University of California, San Diego, San Diego, CA, United States
| | - Edward B. Prideaux
- Department of Chemistry and Biochemistry, University of California, San Diego, San Diego, CA, United States
| | - Joshua Hillman
- Department of Medicine, University of California, San Diego, San Diego, CA, United States
| | - Wei Wang
- Department of Chemistry and Biochemistry, University of California, San Diego, San Diego, CA, United States
| | - Gary S. Firestein
- Department of Medicine, University of California, San Diego, San Diego, CA, United States
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Chen Y, Yin Q, Cheng XY, Zhang JR, Jin H, Li K, Mao CJ, Wang F, Bei HZ, Liu CF. G2019S LRRK2 Mutation Enhances MPP +-Induced Inflammation of Human Induced Pluripotent Stem Cells-Differentiated Dopaminergic Neurons. Front Neurosci 2022; 16:947927. [PMID: 35873822 PMCID: PMC9298923 DOI: 10.3389/fnins.2022.947927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 06/20/2022] [Indexed: 11/14/2022] Open
Abstract
Induced pluripotent stem cells (iPSCs) offer an unprecedented opportunity to mimic human diseases of related cell types, but it is unclear whether they can successfully mimic age-related diseases such as Parkinson’s disease (PD). We generated iPSCs lines from three patients with familial PD associated with the G2019S mutation in the LRRK2 gene and one age-matched healthy individual (control). During long-term culture, dopaminergic (DA) neurons differentiated from iPSCs of G2019S LRRK2 PD patients exhibited morphological changes, including a reduced number of neurites and neurite arborization, which were not evident in DA neurons differentiated from control iPSCs. To mimic PD pathology in vitro, we used 1-methyl-4-phenylpyridium (MPP+) to damage DA neurons and found that DA neurons differentiated from patients with G2019S LRRK2 mutation significantly reduced the survival rate and increased apoptosis compared with the controls. We also found that the mRNA level of inflammatory factors [interleukin (IL)-1β, tumor necrosis factor-α, cyclooxygenase-2, IL-6, and inducible NO synthase] with G2019S LRRK2 mutation were higher than control group after exposure to MPP+. Our study provides an in vitro model based on iPSCs that captures the patients’ genetic complexity and investigates the pathogenesis of familial PD cases in a disease-associated cell type.
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Affiliation(s)
- Ying Chen
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Qing Yin
- Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, China.,Department of Neurology, The Third Affiliated Hospital of Inner Mongolia Medical University, Baotou, China
| | - Xiao-Yu Cheng
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jin-Ru Zhang
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Hong Jin
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Kai Li
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Cheng-Jie Mao
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Fen Wang
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Hong-Zhe Bei
- Department of Neurology, The Third Affiliated Hospital of Inner Mongolia Medical University, Baotou, China
| | - Chun-Feng Liu
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
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Key Performance Indicators of Common Carp (Cyprinus carpio L.) Wintering in a Pond and RAS under Different Feeding Schemes. SUSTAINABILITY 2022. [DOI: 10.3390/su14073724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Overwintering impacts common carp performance, yet the nature of changes is not known. The aim of the study was to compare the zootechnical and key performance indicators (KPI) of Cyprinus carpio wintering in a pond with no supplementary feeding (MCF), in a Recirculating Aquaculture System (RAS) fed typical (30% of protein and 8% of fat) carp diet (AFC), and in a RAS fed high protein (42%) and fat (12%) diet (ABF). The analysis showed that ABF fish had the highest final body weight and the Fulton’s condition factor, as well as the lowest food conversion rate compared with AFC and MCF fish. Histomorphological assessment revealed that MCF fish had thinner skin layers, a depleted population of mucous cells in skin, an excessive interlamellar mass in the gills, and no supranuclear vacuoles in the intestine compared to fish from RAS. At the molecular level, higher transcript levels of il-1β and il-6 transcripts were found in the gills of MCF than in fish from RAS. The transcript level of the intestinal muc5b was the highest in ABF fish. Relative expression of il-1β and il-6 in gills were presumably the highest due to lamellar fusions in MCF fish. Described KPIs may assist carp production to ensure sustainability and food security in the European Union.
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