1
|
Laudon A, Wang Z, Zou A, Sharma R, Ji J, Kim C, Qian Y, Ye Q, Chen H, Henderson JM, Zhang C, Kolachalama VB, Lu W. Digital pathology assessment of kidney glomerular filtration barrier ultrastructure in an animal model of podocytopathy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.14.599097. [PMID: 38948787 PMCID: PMC11212870 DOI: 10.1101/2024.06.14.599097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Background Transmission electron microscopy (TEM) images can visualize kidney glomerular filtration barrier ultrastructure, including the glomerular basement membrane (GBM) and podocyte foot processes (PFP). Podocytopathy is associated with glomerular filtration barrier morphological changes observed experimentally and clinically by measuring GBM or PFP width. However, these measurements are currently performed manually. This limits research on podocytopathy disease mechanisms and therapeutics due to labor intensiveness and inter-operator variability. Methods We developed a deep learning-based digital pathology computational method to measure GBM and PFP width in TEM images from the kidneys of Integrin-Linked Kinase (ILK) podocyte-specific conditional knockout (cKO) mouse, an animal model of podocytopathy, compared to wild-type (WT) control mouse. We obtained TEM images from WT and ILK cKO littermate mice at 4 weeks old. Our automated method was composed of two stages: a U-Net model for GBM segmentation, followed by an image processing algorithm for GBM and PFP width measurement. We evaluated its performance with a 4-fold cross-validation study on WT and ILK cKO mouse kidney pairs. Results Mean (95% confidence interval) GBM segmentation accuracy, calculated as Jaccard index, was 0.73 (0.70-0.76) for WT and 0.85 (0.83-0.87) for ILK cKO TEM images. Automated and manual GBM width measurements were similar for both WT (p=0.49) and ILK cKO (p=0.06) specimens. While automated and manual PFP width measurements were similar for WT (p=0.89), they differed for ILK cKO (p<0.05) specimens. WT and ILK cKO specimens were morphologically distinguishable by manual GBM (p<0.05) and PFP (p<0.05) width measurements. This phenotypic difference was reflected in the automated GBM (p<0.05) more than PFP (p=0.06) widths. Conclusions These results suggest that certain automated measurements enabled via deep learning-based digital pathology tools could distinguish healthy kidneys from those with podocytopathy. Our proposed method provides high-throughput, objective morphological analysis and could facilitate podocytopathy research and translate into clinical diagnosis. Key points We leveraged U-Net architecture in an algorithm to measure the widths of glomerular basement membrane and podocyte foot processes.Deep learning-based automated measurement of glomerular filtration barrier morphology has promise in podocytopathy research and diagnosis.
Collapse
Affiliation(s)
- Aksel Laudon
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
- Nephrology Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Zhaoze Wang
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Anqi Zou
- Computational Biomedicine Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Richa Sharma
- Nephrology Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Jiayi Ji
- Nephrology Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Connor Kim
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Yingzhe Qian
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Qin Ye
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Hui Chen
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Joel M Henderson
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Chao Zhang
- Computational Biomedicine Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| | - Vijaya B Kolachalama
- Computational Biomedicine Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
- Department of Computer Science and Faculty of Computing & Data Sciences, Boston University, Boston, MA, USA
| | - Weining Lu
- Nephrology Section, Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston Medical Center, Boston, MA, USA
| |
Collapse
|
2
|
Lin YC, Liang YJ, Zhang CH, Liu LJ, Lin FH. Characterization and Therapeutic Potential of Curcumin-Loaded Cerium Oxide Nanoparticles for Interstitial Cystitis Management. Antioxidants (Basel) 2024; 13:826. [PMID: 39061895 DOI: 10.3390/antiox13070826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 06/29/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024] Open
Abstract
Oxidative stress resulting from reactive oxygen species (ROS) is often considered to be the leading cause of interstitial cystitis (IC), which is a chronic inflammatory disease. Antioxidants have been proven to have promising therapeutic effects on IC. In this study, we present an antioxidant intervention for IC by introducing curcumin-loaded cerium oxide nanoparticles (Cur-CONPs). Recognizing oxidative stress as the primary contributor to IC, our research builds on previous work utilizing cerium oxide nanoparticles (CONPs) for their outstanding antioxidant and anti-inflammatory properties. However, given the need to effectively relieve acute inflammation, we engineered Cur-CONPs to harness the short-term radical-scavenging antioxidant prowess of curcumin. Through in vitro studies, we demonstrate that the Cur-CONPs exhibit not only robust antioxidant capabilities but also superior anti-inflammatory properties over CONPs alone. Furthermore, in vivo studies validate the therapeutic effects of Cur-CONPs on IC. Mice with IC subjected to the Cur-CONP treatment exhibited improved micturition behaviors, relief from pelvic pain sensitivity, and reduced expression of inflammatory proteins (IL-6, IL-1β, TNF-α, Cox2). These findings suggest that the synergistic antioxidant properties of the Cur-CONPs that combine the sustained antioxidant properties of CONPs and acute anti-inflammatory capabilities of curcumin hold promise as a novel treatment strategy for IC.
Collapse
Affiliation(s)
- Yang-Chen Lin
- Department of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ya-Jyun Liang
- Department of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chun-Hong Zhang
- Yantai Research Institute, Harbin Engineering University, 145 Nantong Street, Nangang District, Harbin 150009, China
| | - Li-Jia Liu
- Yantai Research Institute, Harbin Engineering University, 145 Nantong Street, Nangang District, Harbin 150009, China
| | - Feng-Huei Lin
- Department of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10617, Taiwan
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan
| |
Collapse
|
3
|
Valente W, da Cruz CKF, Zuanon JAS, de Avelar GF, Godoy L. Ultrastructural evaluation of the oocytes and spermatozoa of the scleractinian coral Mussismilia harttii. Tissue Cell 2024; 90:102469. [PMID: 39032463 DOI: 10.1016/j.tice.2024.102469] [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: 12/18/2023] [Revised: 07/07/2024] [Accepted: 07/08/2024] [Indexed: 07/23/2024]
Abstract
Global coverage of living coral has declined by half since 1950s. Reef-building species have been severely impacted in this climate crisis scenario, compromising the future of coral reefs. Despite their importance, there is a lack of knowledge regarding the reproductive biology of scleractinian corals. In the present study, we evaluated through electron microscopy approaches, the gametes of the endemic Southwestern Atlantic coral Mussismilia harttii. We observed spherical oocytes with microvilli throughout the outer membrane. Fine granular material dispersed in cytoplasm, lipid granules, numerous yolk bodies, and mitochondria were identified in the oocytes. In addition, small Symbiodinium-like cells were observed, suggesting a vertical transmission from parental coral to oocytes. The spherical-head sperm presents a 9.3 ± 2.1 μm flagellum. The nucleus is located centrally in the head, and the centrioles are positioned between the nuclear base and the flagellar insertion, which is connected to the axoneme. This axoneme has a microtubular arrangement (9+2). Vesicles, underlining the inner plasma membrane, presented the same electron-dense pattern as the Golgi complex, and mitochondria positioned surrounding the axoneme. The vesicles present in the sperm may have a role as an acrosome since the oocytes do not develop any cell specialization for fertilization.
Collapse
Affiliation(s)
- Wanderson Valente
- Graduate Program in Animal Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Laboratory of Cell Biology, Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Jener Alexandre Sampaio Zuanon
- Laboratory of Physiology Applied to Fish Farming, Department of Animal Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Gleide Fernandes de Avelar
- Laboratory of Cell Biology, Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Leandro Godoy
- Graduate Program in Animal Biology, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
| |
Collapse
|
4
|
Power K, Leandri R, Fierro A, Zottola T, De Vico G. Mass mortality of Cornu aspersum in Italian snail farms: A histopathological survey. J Invertebr Pathol 2024; 206:108160. [PMID: 38925365 DOI: 10.1016/j.jip.2024.108160] [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: 01/15/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/28/2024]
Abstract
The production demand of edible snails in the Mediterranean area is very high and the attention to snail borne diseases is increasing. Following mass mortality events, we have analyzed 240 samples of Cornu aspersum collected from farms across Italy. Anatomopathological examination showed the presence of alterations of the gastro-intestinal apparatus and of the digestive gland, while histopathological examination revealed the presence of Rickettsia-like organisms (RLOs) in 70% (168/240) of cases and Giemsa positive amoebae in the remaining 30% (72/240) of cases. RLOs were localized mainly at the level of the DG, where regressive changes or nodular inflammation was observed. TEM examination of RLOs samples revealed the presence of many rod-shaped electron dense microorganisms. Amoebal infection occurred in the kidney, intestine, lung, the DG and were associated to regressive events or infiltrative/nodular and encapsulation like inflammation. To date it is still unclear if the pathogens detected could represent a risk for humans and animals, therefore further studies are needed to better elucidate this point.
Collapse
Affiliation(s)
- Karen Power
- Department of Biology, University of Naples Federico II, 80126, Naples, Italy.
| | - Rebecca Leandri
- Department of Biology, University of Naples Federico II, 80126, Naples, Italy
| | - Angelo Fierro
- Department of Biology, University of Naples Federico II, 80126, Naples, Italy
| | - Tiziana Zottola
- Istituto Zooprofilattico Sperimentale Lazio e Toscana M.Aleandri, UOT Lazio Sud, 04100 Latina, Italy
| | - Gionata De Vico
- Department of Biology, University of Naples Federico II, 80126, Naples, Italy
| |
Collapse
|
5
|
Fishbein GA, Bois MC, d'Amati G, Glass C, Masuelli L, Rodriguez ER, Seidman MA. Ultrastructural Cardiac Pathology: The Wide (yet so very small) World of Cardiac Electron Microscopy. Cardiovasc Pathol 2024:107670. [PMID: 38880163 DOI: 10.1016/j.carpath.2024.107670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 06/07/2024] [Accepted: 06/09/2024] [Indexed: 06/18/2024] Open
Abstract
Electron microscopy (EM) was a popular diagnostic tool in the 1970s and early 80s. With the adoption of newer, less expensive techniques, such as immunohistochemistry, the role of EM in diagnostic surgical pathology has dwindled substantially. Nowadays, even in academic centers, EM interpretation is relegated to renal pathologists and the handful of (aging) pathologists with experience using the technique. As such, EM interpretation is truly arcane-understood by few and mysterious to many. Nevertheless, there remain situations in which EM is the best or only ancillary test to ascertain a specific diagnosis. Thus, there remains a critical need for the younger generation of surgical pathologists to learn EM interpretation. Recognizing this need, cardiac EM was made the theme of the Cardiovascular Evening Specialty Conference at the 2023 United States and Canadian Academy of Pathology (USCAP) annual meeting in New Orleans, Louisiana. Each of the speakers contributed their part to this article, the purpose of which is to review EM as it pertains to myocardial tissue and provide illustrative examples of the spectrum of ultrastructural cardiac pathology seen in storage/metabolic diseases, cardiomyopathies, infiltrative disorders, and cardiotoxicities.
Collapse
Affiliation(s)
- Gregory A Fishbein
- University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA.
| | | | | | | | | | | | | |
Collapse
|
6
|
Jin S, Ahn Y, Park J, Park M, Lee SC, Lee WJ, Seo D. Temporal Patterns of Angular Displacement of Endosomes: Insights into Motor Protein Exchange Dynamics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2306849. [PMID: 38828676 DOI: 10.1002/advs.202306849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 03/24/2024] [Indexed: 06/05/2024]
Abstract
The material transport system, facilitated by motor proteins, plays a vital role in maintaining a non-equilibrium cellular state. However, understanding the temporal coordination of motor protein activity requires an advanced imaging technique capable of measuring 3D angular displacement in real-time. In this study, a Fourier transform-based plasmonic dark-field microscope has been developed using anisotropic nanoparticles, enabling the prolonged and simultaneous observation of endosomal lateral and rotational motion. A sequence of discontinuous 3D angular displacements has been observed during the pause and run phases of transport. Notably, a serially correlated temporal pattern in the intermittent rotational events has been demonstrated during the tug-of-war mechanism, indicating Markovian switching between the exploitational and explorational modes of motor protein exchange prior to resuming movement. Alterations in transition frequency and the exploitation-to-exploration ratio upon dynein inhibitor treatment highlight the relationship between disrupted motor coordination and reduced endosomal transport efficiency. Collectively, these results suggest the importance of orchestrated temporal motor protein patterns for efficient cellular transport.
Collapse
Affiliation(s)
- Siwoo Jin
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Yongdeok Ahn
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Jiseong Park
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Minsoo Park
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Sang-Chul Lee
- Division of Nanotechnology, and Department of DGIST, Daegu, 42988, Republic of Korea
| | - Wonhee J Lee
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Daeha Seo
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| |
Collapse
|
7
|
Chen X, Li Y, Xu J, Cui Y, Wu Q, Yin H, Li Y, Gao C, Jiang L, Wang H, Wen Z, Yao Z, Wu Z. Styxl2 regulates de novo sarcomere assembly by binding to non-muscle myosin IIs and promoting their degradation. eLife 2024; 12:RP87434. [PMID: 38829202 PMCID: PMC11147509 DOI: 10.7554/elife.87434] [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] [Indexed: 06/05/2024] Open
Abstract
Styxl2, a poorly characterized pseudophosphatase, was identified as a transcriptional target of the Jak1-Stat1 pathway during myoblast differentiation in culture. Styxl2 is specifically expressed in vertebrate striated muscles. By gene knockdown in zebrafish or genetic knockout in mice, we found that Styxl2 plays an essential role in maintaining sarcomere integrity in developing muscles. To further reveal the functions of Styxl2 in adult muscles, we generated two inducible knockout mouse models: one with Styxl2 being deleted in mature myofibers to assess its role in sarcomere maintenance, and the other in adult muscle satellite cells (MuSCs) to assess its role in de novo sarcomere assembly. We find that Styxl2 is not required for sarcomere maintenance but functions in de novo sarcomere assembly during injury-induced muscle regeneration. Mechanistically, Styxl2 interacts with non-muscle myosin IIs, enhances their ubiquitination, and targets them for autophagy-dependent degradation. Without Styxl2, the degradation of non-muscle myosin IIs is delayed, which leads to defective sarcomere assembly and force generation. Thus, Styxl2 promotes de novo sarcomere assembly by interacting with non-muscle myosin IIs and facilitating their autophagic degradation.
Collapse
Affiliation(s)
- Xianwei Chen
- Division of Life Science, Hong Kong University of Science & TechnologyHong KongChina
| | - Yanfeng Li
- Division of Life Science, Hong Kong University of Science & TechnologyHong KongChina
| | - Jin Xu
- Division of Life Science, Hong Kong University of Science & TechnologyHong KongChina
| | - Yong Cui
- School of Life Sciences, Chinese University of Hong KongHong KongChina
| | - Qian Wu
- Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic UniversityHong KongChina
| | - Haidi Yin
- Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic UniversityHong KongChina
| | - Yuying Li
- Department of Orthopaedics and Traumatology, Li Ka Shing Institute of Health Sciences, Chinese University of Hong KongHong KongChina
| | - Chuan Gao
- Division of Life Science, Hong Kong University of Science & TechnologyHong KongChina
| | - Liwen Jiang
- School of Life Sciences, Chinese University of Hong KongHong KongChina
| | - Huating Wang
- Department of Orthopaedics and Traumatology, Li Ka Shing Institute of Health Sciences, Chinese University of Hong KongHong KongChina
| | - Zilong Wen
- Division of Life Science, Hong Kong University of Science & TechnologyHong KongChina
| | - Zhongping Yao
- Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic UniversityHong KongChina
| | - Zhenguo Wu
- Division of Life Science, Hong Kong University of Science & TechnologyHong KongChina
| |
Collapse
|
8
|
Sa P, Singh P, Panda S, Swain RK, Dash R, Sahoo SK. Reversal of cisplatin resistance in oral squamous cell carcinoma by piperlongumine loaded smart nanoparticles through inhibition of Hippo-YAP signaling pathway. Transl Res 2024; 268:63-78. [PMID: 38499286 DOI: 10.1016/j.trsl.2024.03.004] [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: 10/16/2023] [Revised: 02/13/2024] [Accepted: 03/07/2024] [Indexed: 03/20/2024]
Abstract
Cisplatin alone or in combination with 5FU and docetaxel is the preferred chemotherapy regimen for advanced-stage OSCC patients. However, its use has been linked to recurrence and metastasis due to the development of drug resistance. Therefore, sensitization of cancer cells to conventional chemotherapeutics can be an effective strategy to overcome drug resistance. Piperlongumine (PL), an alkaloid, have shown anticancer properties and sensitizes numerous neoplasms, but its effect on OSCC has not been explored. However, low aqueous solubility and poor pharmacokinetics limit its clinical application. Therefore, to improve its therapeutic efficacy, we developed piperlongumine-loaded PLGA-based smart nanoparticles (smart PL-NPs) that can rapidly release PL in an acidic environment of cancer cells and provide optimum drug concentrations to overcome chemoresistance. Our results revealed that smart PL-NPs has high cellular uptake in acidic environment, facilitating the intracellular delivery of PL and sensitizing cancer cells to cisplatin, resulting in synergistic anticancer activity in vitro by increasing DNA damage, apoptosis, and inhibiting drug efflux. Further, we have mechanistically explored the Hippo-YAP signaling pathway, which is the critical mediator of chemoresistance, and investigated the chemosensitizing effect of PL in OSCC. We observed that PL alone and in combination with cisplatin significantly inhibits the activation of YAP and its downstream target genes and proteins. In addition, the combination of cisplatin with smart PL-NPs significantly inhibited tumor growth in two preclinical models (patient-derived cell based nude mice and zebrafish xenograft). Taken together, our findings suggest that smart PL-NPs with cisplatin will be a novel formulation to reverse cisplatin resistance in patients with advanced OSCC.
Collapse
Affiliation(s)
- Pratikshya Sa
- Institute of Life Sciences, Nalco square, Chandrasekharpur, Bhubaneswar, Odisha 751 023, India; Regional Centre for Biotechnology, Faridabad-Gurgaon Expressway, Faridabad, Haryana 121 001, India
| | - Priya Singh
- Institute of Life Sciences, Nalco square, Chandrasekharpur, Bhubaneswar, Odisha 751 023, India; Regional Centre for Biotechnology, Faridabad-Gurgaon Expressway, Faridabad, Haryana 121 001, India
| | - Sudhakar Panda
- Institute of Life Sciences, Nalco square, Chandrasekharpur, Bhubaneswar, Odisha 751 023, India
| | - Rajeeb K Swain
- Institute of Life Sciences, Nalco square, Chandrasekharpur, Bhubaneswar, Odisha 751 023, India
| | - Rupesh Dash
- Institute of Life Sciences, Nalco square, Chandrasekharpur, Bhubaneswar, Odisha 751 023, India
| | - Sanjeeb Kumar Sahoo
- Institute of Life Sciences, Nalco square, Chandrasekharpur, Bhubaneswar, Odisha 751 023, India.
| |
Collapse
|
9
|
Abou-Hany HO, El-Sherbiny M, Elshaer S, Said E, Moustafa T. Neuro-modulatory impact of felodipine against experimentally-induced Parkinson's disease: Possible contribution of PINK1-Parkin mitophagy pathway. Neuropharmacology 2024; 250:109909. [PMID: 38494124 DOI: 10.1016/j.neuropharm.2024.109909] [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: 09/14/2023] [Revised: 02/28/2024] [Accepted: 03/11/2024] [Indexed: 03/19/2024]
Abstract
Parkinson's disease (PD) is a prevalent neurodegenerative disorder, characterized by motor and psychological dysfunction. Palliative treatment and dopamine replenishment therapy are the only available therapeutic options. Calcium channel blockers (CCBs) have been reported to protect against several neurodegenerative disorders. The current study was designed to evaluate the neuroprotective impact of Felodipine (10 mg/kg, orally) as a CCB on motor and biochemical dysfunction associated with experimentally induced PD using rotenone (2.5 mg/kg, IP) and to investigate the underlying mechanisms. Rotenone induced deleterious neuromotor outcomes, typical of those associated with PD. The striatum revealed increased oxidative burden and NO levels with decreased antioxidant capacity. Nrf2 content significantly decreased with the accumulation of α-synuclein and tau proteins in both the substantia nigra and striatum. These observations significantly improved with felodipine treatment. Of note, felodipine increased dopamine levels in the substantia nigra and striatum as confirmed by the suppression of inflammation and the significant reduction in striatal NF-κB and TNF-α contents. Moreover, felodipine enhanced mitophagy, as confirmed by a significant increase in mitochondrial Parkin and suppression of LC3a/b and SQSTM1/p62. In conclusion, felodipine restored dopamine synthesis, attenuated oxidative stress, inflammation, and mitochondrial dysfunction, and improved the mitophagy process resulting in improved PD-associated motor impairment.
Collapse
Affiliation(s)
- Hadeer O Abou-Hany
- Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for Sciences and Technology, Gamasa, 7730103, Egypt.
| | - Mohamed El-Sherbiny
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, P.O. Box 71666, Riyadh, 11597, Saudi Arabia; Department of Anatomy, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Sally Elshaer
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt; St. Jude Children's Research Hospital, Oncology Department, Memphis, TN, USA, 38105
| | - Eman Said
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, New Mansoura University, New Manoura, Egypt
| | - Tarek Moustafa
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| |
Collapse
|
10
|
Galaz-Montoya JG. The advent of preventive high-resolution structural histopathology by artificial-intelligence-powered cryogenic electron tomography. Front Mol Biosci 2024; 11:1390858. [PMID: 38868297 PMCID: PMC11167099 DOI: 10.3389/fmolb.2024.1390858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 05/08/2024] [Indexed: 06/14/2024] Open
Abstract
Advances in cryogenic electron microscopy (cryoEM) single particle analysis have revolutionized structural biology by facilitating the in vitro determination of atomic- and near-atomic-resolution structures for fully hydrated macromolecular complexes exhibiting compositional and conformational heterogeneity across a wide range of sizes. Cryogenic electron tomography (cryoET) and subtomogram averaging are rapidly progressing toward delivering similar insights for macromolecular complexes in situ, without requiring tags or harsh biochemical purification. Furthermore, cryoET enables the visualization of cellular and tissue phenotypes directly at molecular, nanometric resolution without chemical fixation or staining artifacts. This forward-looking review covers recent developments in cryoEM/ET and related technologies such as cryogenic focused ion beam milling scanning electron microscopy and correlative light microscopy, increasingly enhanced and supported by artificial intelligence algorithms. Their potential application to emerging concepts is discussed, primarily the prospect of complementing medical histopathology analysis. Machine learning solutions are poised to address current challenges posed by "big data" in cryoET of tissues, cells, and macromolecules, offering the promise of enabling novel, quantitative insights into disease processes, which may translate into the clinic and lead to improved diagnostics and targeted therapeutics.
Collapse
Affiliation(s)
- Jesús G. Galaz-Montoya
- Department of Bioengineering, James H. Clark Center, Stanford University, Stanford, CA, United States
| |
Collapse
|
11
|
Torge D, Bernardi S, Ciciarelli G, Macchiarelli G, Bianchi S. Dedicated Protocol for Ultrastructural Analysis of Farmed Rainbow Trout ( Oncorhynchus mykiss) Tissues with Red Mark Syndrome: The Skin-Part One. Methods Protoc 2024; 7:37. [PMID: 38804331 PMCID: PMC11130968 DOI: 10.3390/mps7030037] [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: 03/19/2024] [Revised: 04/11/2024] [Accepted: 04/19/2024] [Indexed: 05/29/2024] Open
Abstract
The present study aims to provide a specific protocol for transmission electron microscopy of a sample of skin of rainbow trout affected by red mark syndrome (RMS). The red mark syndrome is a skin disease that affects the rainbow trout (Oncorhynchus mykiss). The disease, probably due to the Midichloria-like organism infection, is not lethal, but morbidity can reach up to 60%, leading to significant economic impact associated with the downgrading of the commercial product, increased labor, and susceptibility to secondary infections. The ultrastructure analyses allowed an earlier study to identify the presence of scattered microorganisms characterized by an oval shape, mainly in the cytoplasm of the cells. The protocol developed in this study will be instrumental in visualizing the ultrastructure of the microorganism, which is probably responsible for red mark syndrome infection.
Collapse
Affiliation(s)
- Diana Torge
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (G.M.); (S.B.)
| | - Sara Bernardi
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (G.C.); (G.M.); (S.B.)
| | | | | | | |
Collapse
|
12
|
Hafez SMNA, Abdelhafez ESMN. The possible protective effect of l-cysteine in a rat model of sciatic nerve ischemia-reperfusion: A possible role for NRF1 and Caspase 3; Biochemical, Histological, and Immunohistochemical study. J Chem Neuroanat 2024; 137:102412. [PMID: 38460773 DOI: 10.1016/j.jchemneu.2024.102412] [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: 01/05/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/11/2024]
Abstract
Organ damage brought on by ischemia is exacerbated by the reperfusion process. L-cysteine is a semi-essential amino acid that acts as a substrate for cystathionine-β-synthase in the central nervous system. The aim of this study was to investigate the possible protective effects of L- cysteine against the structural and biochemical changes that occur in the rat sciatic nerve after ischemia reperfusion (I/R) and to address some of the underlying mechanisms of these effects. Rats were divided into 4 groups: sham, l-cysteine, I/R, and l-cysteine- I/R groups. Specimens of sciatic nerve were processed for biochemical, histological, and immunohistochemical assessment. The results showed in I/R group, a significant increase in malondialdehyde with a significant decrease in both Nuclear respiratory factor-1 (NRF1) and superoxide dismutase levels. Moreover, with histological alteration. There was a significant increase in the mean surface area fraction of anti-caspase immunopositive cells as well as a significantdecrease in mean surface area fraction of anti-CD 34 immunopositive cells. In contrast, the l-cysteine- I/R group showed amelioration of these biochemical, structural, and immunohistochemical changes. To the best of our knowledge, this is the first study showed the protective effects of l-cysteine in sciatic nerve I/R via NRF1and caspase 3 modulation as well as telocyte activation.
Collapse
Affiliation(s)
| | - El-Shimaa M N Abdelhafez
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Faculty of Medicine, Minia 61111, Egypt.
| |
Collapse
|
13
|
Cheng X, Huang J, Li H, Zhao D, Liu Z, Zhu L, Zhang Z, Peng W. Quercetin: A promising therapy for diabetic encephalopathy through inhibition of hippocampal ferroptosis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 126:154887. [PMID: 38377720 DOI: 10.1016/j.phymed.2023.154887] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 04/28/2023] [Accepted: 05/16/2023] [Indexed: 02/22/2024]
Abstract
BACKGROUND The pathophysiology of diabetic encephalopathy (DE), a significant diabetes-related pathological complication of the central nervous system, is poorly understood. Ferroptosis is an iron-dependent regulated necrotic cell death process that mediates the development of neurodegenerative and diabetes-related lesions. Quercetin (QE) exerts anti-ferroptotic effects in various diseases. However, the roles of ferroptosis in DE and the potential anti-ferroptotic mechanisms of QE are unclear. PURPOSE This study aimed to investigate if quercetin can ameliorate DE by inhibiting ferroptosis and to elucidate the potential anti-ferroptotic mechanisms of QE, thus providing a new perspective on the pathogenesis and prevention of DE. METHODS The spontaneously type 2 diabetic Goto-Kakizak rats and high glucose (HG)-induced PC12 cells were used as animal and in vitro models, respectively. The Morris water maze test was performed to evaluate the cognition of rats. Pathological damage was examined using hematoxylin and eosin staining. Mitochondrial damage was assessed using transmission electron microscopy. Lipid peroxidation was evaluated by examining the levels of malondialdehyde, superoxide dismutase, and glutathione. Additionally, the contents of iron ions were quantified. Immunofluorescence and western blotting were carried out to poke the protein levels. Network pharmacology analysis was conducted to construct a protein-protein interaction network for the therapeutic targets of QE in DE. Additionally, molecular docking and cellular thermal shift assay was performed to examine the target of QE. RESULTS QE alleviated cognitive impairment, decreased lipid peroxidation and iron deposition in the hippocampus, and upregulated the Nrf2/HO-1 signaling pathway. HG-induced ferroptosis in PC12 cells resulted in decreased cell viability accompanied by lipid peroxidation and iron deposition. QE mitigated HG-induced ferroptosis by upregulating the Nrf2/HO-1 pathway, which was partially suppressed upon Nrf2 inhibition. Network pharmacology analysis further indicated that the Nrf2/HO-1 signaling pathway is a key target of QE. Molecular docking experiments revealed that QE binds to KEAP1 through four hydrogen bonds. Moreover, QE altered the thermostability of KEAP1. CONCLUSION These results indicated that QE inhibits ferroptosis in the hippocampal neurons by binding to KEAP1 and subsequently upregulating the Nrf2/HO-1 signaling pathway.
Collapse
Affiliation(s)
- Xin Cheng
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan 410011, PR China; National Clinical Research Center for Mental Disorder, The Second Xiangya Hospital, Central South University, Changsha 410011, PR China
| | - Jianhua Huang
- Hunan Academy of Chinese Medicine, Changsha 410013, PR China
| | - Hongli Li
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan 410011, PR China; National Clinical Research Center for Mental Disorder, The Second Xiangya Hospital, Central South University, Changsha 410011, PR China
| | - Di Zhao
- Hunan Academy of Chinese Medicine, Changsha 410013, PR China
| | - Zhao Liu
- Hunan Academy of Chinese Medicine, Changsha 410013, PR China
| | - Lemei Zhu
- Academician Workstation, Changsha Medical University, Changsha 410219, PR China
| | - Zhen Zhang
- YangSheng College of Traditional Chinese Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou 550025, PR China
| | - Weijun Peng
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan 410011, PR China; National Clinical Research Center for Mental Disorder, The Second Xiangya Hospital, Central South University, Changsha 410011, PR China.
| |
Collapse
|
14
|
Nikouee A, Yap JQ, Rademacher DJ, Kim M, Zang QS. An Optimized Langendorff-free Method for Isolation and Characterization of Primary Adult Cardiomyocytes. RESEARCH SQUARE 2024:rs.3.rs-4131724. [PMID: 38585995 PMCID: PMC10996804 DOI: 10.21203/rs.3.rs-4131724/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Isolation of adult mouse cardiomyocytes is an essential technique for advancing our understanding of cardiac physiology and pathology, and for developing therapeutic strategies to improve cardiac health. Traditionally, cardiomyocytes are isolated from adult mouse hearts using the Langendorff perfusion method in which the heart is excised, cannulated, and retrogradely perfused through the aorta. While this method is highly effective for isolating cardiomyocytes, it requires specialized equipment and technical expertise. To address the challenges of the Langendorff perfusion method, researchers have developed a Langendorff-free technique for isolating cardiomyocytes. This Langendorff-free technique involves anterograde perfusion through the coronary vasculature by clamping the aorta and intraventricular injection. This method simplifies the experimental setup by eliminating the need for specialized equipment and cannulation of the heart. Here, we introduce an updated Langendorff-free method for isolating adult mice cardiomyocytes that builds on the Langendorff-free protocols developed previously. In this method, the aorta is clamped in situ, and the heart is perfused using a peristaltic pump, water bath, and an injection needle. This simplicity makes cardiomyocyte isolation more accessible for researchers who are new to cardiomyocyte isolation or are working with limited resources. In this report, we provide a step-by-step description of our optimized protocol. In addition, we present example studies of analyzing mitochondrial structural and functional characteristics in isolated cardiomyocytes treated with and without the acute inflammatory stimuli lipopolysaccharide (LPS).
Collapse
|
15
|
Rakshak R, Bhatt S, Sharma S, Agharkar R, Bodakhe S, Srivastava R. Characterizing morphological alterations in blood related disorders through Atomic Force Microscopy. Nanotheranostics 2024; 8:330-343. [PMID: 38577323 PMCID: PMC10988212 DOI: 10.7150/ntno.93206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/25/2024] [Indexed: 04/06/2024] Open
Abstract
Atomic Force Microscopy (AFM) is a very flexible method that can create topographical images from a range of materials and image surfaces. Significantly, AFM has emerged as an invaluable tool for dissecting the morphology and biochemical aspects of body cells and tissues. The high-resolution imaging capabilities of AFM enable researchers to discern alterations in cell morphology and understand the underlying mechanisms of diseases. It contributes to understanding disease etiology and progression. In the context of this review, our focus will be directed towards elucidating the pivotal role of AFM in analysis of blood related disorders. Through detailed comparisons with normal cells, we delve into the alterations in size, shape, and surface characteristics induced by conditions such as cancer, diabetes, anaemia, and infections caused by pathogens. In essence, various work described in this article highlights to bridge the gap between traditional microscopy and in-depth analysis of blood-related pathologies, which in turn offers valuable perspectives for both research and clinical applications in the field.
Collapse
Affiliation(s)
| | | | | | | | | | - Rohit Srivastava
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Bombay, India
| |
Collapse
|
16
|
Boruah D, Kashif AW, Chakrabarty BK, Harikrishnan S, Sen A. Correlation of light and electron microscopic morphometric parameters of glomerular capillaries with serum creatinine and proteinuria. J Histotechnol 2024:1-12. [PMID: 38465441 DOI: 10.1080/01478885.2024.2326274] [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: 10/12/2023] [Accepted: 02/27/2024] [Indexed: 03/12/2024]
Abstract
Waste products in the bloodstream are filtered by the glomerular capillaries in the kidneys and excreted into the urine. When making a differential diagnosis of kidney diseases, structural assessment of glomeruli using histological, ultrastructural, and immunological studies is crucial. This study assessed the microscopic and ultrastructural morphometric parameters of glomerular capillaries and examined their correlation with serum creatinine and proteinuria. A total of 60 kidney biopsy cases received by the transmission electron microscope (TEM) laboratory for diagnosis were included in the study. Toluidine blue stained 300 nm thick sections of TEM tissue blocks were scanned for glomerular morphometry by a whole slide imaging system, and the estimation of Bowman's capsule (BC) area, glomerular capillary lumen diameter (GCLD), glomerular capillary density (GCD), glomerular capillary surface area density (GCSA), and percentage of glomerular capillary lumen space (%GCLS) was performed with QuPath software. TEM images of 70 nm thick sections were used for the evaluation of endothelial fenestration diameter (EFD), glomerular basement membrane (GBM) thickness, and podocyte foot process (PFP) effacement. Proteinuria and serum creatinine showed positive correlations with GBM thickness and PFP effacement. Negative correlations of serum creatinine were observed with EFD, %GCLS, and GCSA. Hence, glomerular filtration is greatly affected by the total area of the glomerular capillary surface and structural changes of GBM. Reduction of glomerulus filtration due to foot process effacement and thickening of GBM results in damage to the filtration barrier leading to the leakage of plasma protein into urine.
Collapse
Affiliation(s)
| | - A W Kashif
- Department of Pathology, Armed Forces Medical College, Pune, India
| | | | | | - Arijit Sen
- Department of Pathology, Armed Forces Medical College, Pune, India
| |
Collapse
|
17
|
Seok J, Park HS, Cetin E, Ghasroldasht MM, Liakath FB, Al-Hendy A. The potent paracrine effect of umbilical cord mesenchymal stem cells mediates mitochondrial quality control to restore chemotherapy-induced damage in ovarian granulosa cells. Biomed Pharmacother 2024; 172:116263. [PMID: 38350369 DOI: 10.1016/j.biopha.2024.116263] [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: 12/08/2023] [Revised: 01/24/2024] [Accepted: 02/06/2024] [Indexed: 02/15/2024] Open
Abstract
The basic principle of chemotherapy is to attack cells with fast growth, and cancer cells are targeted by anticancer drugs because they have a faster growth rate than normal cells. High doses of anticancer drugs may cause an irreversible decline in reproductive capacity, and novel approaches for fertility preservation and/or restoration after anticancer treatment are urgently needed. Here, we provide important insights into the recovery of human reproductive cells damaged by chemotherapy. We performed a detailed screening of the cytokines of various human mesenchymal stem cells (hMSCs) to select superior MSCs. Also, we analyzed the Ovarian granulosa cell (OGC)-)-specific functions for restoring function, apoptosis, and mitochondrial functions to confirm the recovery mechanism in damaged OGCs. As a result, we demonstrated that conditioned media (CM) of Umbilical cord mesenchymal stem cells (UC-MSCs) could restore the functions of damaged OGCs primarily through antiapoptotic and antioxidant effects. Furthermore, CM changed the phenotype of damaged OGCs to an energetic status by restoring mitochondrial function and enhanced the mitochondrial metabolic activity decreased by chemotherapy. Finally, we demonstrated that the restoration of mitochondrial function in damaged OGCs was mediated through mitochondrial autophagy (mitophagy). Our findings offer new insights into the potential of stem cell-based therapy for fertility preservation and/or restoration in female cancer patients.
Collapse
Affiliation(s)
- Jin Seok
- Department of Obstetrics and Gynecology, University of Chicago, 5841 A. Maryland Ave, Chicago, IL 60637, USA
| | - Hang-Soo Park
- Department of Obstetrics and Gynecology, University of Chicago, 5841 A. Maryland Ave, Chicago, IL 60637, USA
| | - Esra Cetin
- Department of Obstetrics and Gynecology, Hurley Medical Center, Michigan State University, 1 Hurley Plaza, Flint, MI 48503, USA
| | | | - Farzana Begum Liakath
- Department of Obstetrics and Gynecology, University of Chicago, 5841 A. Maryland Ave, Chicago, IL 60637, USA
| | - Ayman Al-Hendy
- Department of Obstetrics and Gynecology, University of Chicago, 5841 A. Maryland Ave, Chicago, IL 60637, USA.
| |
Collapse
|
18
|
Elmallawany MA, Abdel-Aal AA, Abu Eleinen KG, Nadar AH, El-Adawy AI, El-Dardiry MA, Abddel-Hafez YN, Kotb AA, Saif ATS, Shaheen HAA, Sayed A, Samir O, Alatyar AA, Sheble MA, Elnakib M, Badr MS, Nahnoush RK. Metagenomic analysis of the ocular toxoplasmosis in children uveitis from Fayoum governorate, Egypt. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 118:105551. [PMID: 38216107 DOI: 10.1016/j.meegid.2024.105551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 01/14/2024]
Abstract
Granulomatous anterior uveitis with single or numerous gelatinous nodules was found in children living in rural Egypt. All ocular diseases were originally thought to be water-born and related to digenic flukes. The current study sought to learn more about the causes of anterior granulomatous uveitis in Egyptian youngsters who used to swim in rural water canals. 50 children with eye lesions that had not responded to medical treatment were recruited. Four samples were surgically extracted and examined using real-time PCR, transmission electron microscopy (TEM), and shotgun metagenomic sequencing (SMS). Toxoplasma gondii was detected free within the syncytium's distal section, while the proximal part exhibited active synthesis of a presumably extra-polymeric material, possibly released by the microbial population. Toxoplasma gondii was found in 30 samples. Serologically, distinct anti-Toxoplasma antibodies were not found in 91.6% of patients. SMS showed that the T. gondii ME 49 strain had the greatest percentage (29-25%) in all samples within an Acinetobacter-containing microbial community. These findings suggested that these bacteria entered the body via the exterior route rather than the circulatory route. The lack of genetic evidence for subsequent parasite stages invalidates the prior findings about the assumed trematode stage.
Collapse
Affiliation(s)
- Marwa A Elmallawany
- Medical Parasitology Department, Faculty of Medicine Kasr Al-Ainy, Cairo University, 11796 Giza, Egypt
| | - Amany A Abdel-Aal
- Medical Parasitology Department, Faculty of Medicine Kasr Al-Ainy, Cairo University, 11796 Giza, Egypt; Postgraduate Department, Armed Forces College of Medicine (AFCM), 11774 Cairo, Egypt
| | - Khaled G Abu Eleinen
- Ophthalmology Department, Faculty of Medicine Kasr Al-Ainy, Cairo University, 11796 Giza, Egypt
| | | | - Azza I El-Adawy
- Medical Parasitology Department, Faculty of Medicine Kasr Al-Ainy, Cairo University, 11796 Giza, Egypt; Medical Parasitology Department, Armed Forces College of Medicine (AFCM), 11774 Cairo, Egypt
| | - Marwa A El-Dardiry
- Medical Parasitology Department, Faculty of Medicine, Fayoum University, 63511 Fayoum, Egypt.
| | - Yosra N Abddel-Hafez
- Medical Parasitology Department, Faculty of Medicine, Fayoum University, 63511 Fayoum, Egypt
| | - Ahmed A Kotb
- Ophthalmology Department, Faculty of Medicine, Fayoum University, 63511 Fayoum, Egypt
| | - Ahmed T S Saif
- Ophthalmology Department, Faculty of Medicine, Fayoum University, 63511 Fayoum, Egypt
| | - Hoda A A Shaheen
- Medical Parasitology Department, Faculty of Medicine, Girl's Campus, Al-Azhar University, 11682 Cairo, Egypt
| | - Ahmed Sayed
- Basic Research Unit, Genomics/Epigenomics Program, Children's Cancer Hospital 57357, 11562 Cairo, Egypt
| | - Omar Samir
- Basic Research Unit, Genomics/Epigenomics Program, Children's Cancer Hospital 57357, 11562 Cairo, Egypt
| | | | | | - Mostafa Elnakib
- Medical Microbiology and Immunology Department, Military Medical Academy, Cairo 11711, Egypt
| | - Mohamed S Badr
- Department of Molecular Biology and Bioinformatics, Medical Research Center, Faculty of Medicine, Ain Shams University, 11566 Cairo, Egypt
| | - Reham K Nahnoush
- Medical Parasitology Department, Faculty of Medicine Kasr Al-Ainy, Cairo University, 11796 Giza, Egypt; Medical Parasitology Department, Armed Forces College of Medicine (AFCM), 11774 Cairo, Egypt
| |
Collapse
|
19
|
Nalezinková M, Loskot J, Myslivcová Fučíková A. The use of scanning electron microscopy and fixation methods to evaluate the interaction of blood with the surfaces of medical devices. Sci Rep 2024; 14:4622. [PMID: 38409219 PMCID: PMC10897226 DOI: 10.1038/s41598-024-55136-z] [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: 12/17/2023] [Accepted: 02/20/2024] [Indexed: 02/28/2024] Open
Abstract
Testing the hemocompatibility of medical devices after their interaction with blood entails the need to evaluate the activation of blood elements and the degree of their coagulation and adhesion to the device surface. One possible way to achieve this is to use scanning electron microscopy (SEM). The aim was to develop a novel SEM-based method to assess the thrombogenic potential of medical devices and their adhesiveness to blood cells. As a part of this task, also find a convenient procedure of efficient and non-destructive sample fixation for SEM while reducing the use of highly toxic substances and shortening the fixation time. A polymeric surgical mesh was exposed to blood so that blood elements adhered to its surface. Such prepared samples were then chemically fixed for a subsequent SEM measurement; a number of fixation procedures were tested to find the optimal one. The fixation results were evaluated from SEM images, and the degree of blood elements' adhesion was determined from the images using ImageJ software. The best fixation was achieved with the May-Grünwald solution, which is less toxic than chemicals traditionally used. Moreover, manipulation with highly toxic osmium tetroxide can be avoided in the proposed procedure. A convenient methodology for SEM image analysis has been developed too, enabling to quantitatively evaluate the interaction of blood with the surfaces of various medical devices. Our method replaces the subjective assessment of surface coverage with a better-defined procedure, thus offering more precise and reliable results.
Collapse
Affiliation(s)
- Martina Nalezinková
- Department of Biology, Faculty of Science, University of Hradec Králové, Rokitanského 62, Hradec Králové, 500 03, Czech Republic.
| | - Jan Loskot
- Department of Physics, Faculty of Science, University of Hradec Králové, Rokitanského 62, Hradec Králové, 500 03, Czech Republic
| | - Alena Myslivcová Fučíková
- Department of Biology, Faculty of Science, University of Hradec Králové, Rokitanského 62, Hradec Králové, 500 03, Czech Republic
| |
Collapse
|
20
|
Bardakov SN, Titova AA, Nikitin SS, Nikitins V, Sokolova MO, Tsargush VA, Yuhno EA, Vetrovoj OV, Carlier PG, Sofronova YV, Isaev АА, Deev RV. Miyoshi myopathy associated with spine rigidity and multiple contractures: a case report. BMC Musculoskelet Disord 2024; 25:146. [PMID: 38365661 PMCID: PMC10870593 DOI: 10.1186/s12891-024-07270-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 02/08/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Dysferlinopathy is a phenotypically heterogeneous group of hereditary diseases caused by mutations in the DYSF gene. Early contractures are considered rare, and rigid spine syndrome in dysferlinopathy has been previously reported only once. CASE PRESENTATION We describe a 23-year-old patient with Miyoshi myopathy with a rigid spine and multiple contractures, a rare phenotypic variant. The disease first manifested when the patient was 13 years old, with fatigue of the gastrocnemius muscles and the development of pronounced contractures of the Achilles tendons, flexors of the fingers, and extensors of the toes, followed by the involvement of large joints and the spine. Magnetic resonance imaging revealed signs of connective tissue and fatty replacement of the posterior muscles of the thighs and lower legs. Edema was noted in the anterior and medial muscle groups of the thighs, lower legs, and the multifidus muscle of the back. Whole genome sequencing revealed previously described mutations in the DYSF gene in exon 39 (c.4282 C > T) and intron 51 (c.5785-824 C > T). An immunohistochemical analysis and Western blot showed the complete absence of dysferlin protein expression in the muscle fibers. CONCLUSIONS This case expands the range of clinical and phenotypic correlations of dysferlinopathy and complements the diagnostic search for spine rigidity.
Collapse
Affiliation(s)
- Sergey N Bardakov
- Department of Neurology, S.M. Kirov Military Medical Academy, 6 Lebedeva str., St. Petersburg, 194044, Russia.
| | - Angelina A Titova
- Kazan (Volga Region) Federal University, 18 Kremlyevskaya str., Kazan, 420008, Russia
| | - Sergey S Nikitin
- Research Centre for Medical Genetics, 1 Moskvorechye str., Moscow, 115522, Russia
| | - Valentin Nikitins
- North-Western State Medical University named after I.I. Mechnikov, 47 Piskarevskij prospect, St. Petersburg, 191015, Russia
| | - Margarita O Sokolova
- Department of Neurology, S.M. Kirov Military Medical Academy, 6 Lebedeva str., St. Petersburg, 194044, Russia
| | - Vadim A Tsargush
- Department of Neurology, S.M. Kirov Military Medical Academy, 6 Lebedeva str., St. Petersburg, 194044, Russia
| | - Elena A Yuhno
- FSBI All-Russian Center for Emergency and Radiation Medicine named after A.M. Nikiforov EMERCOM of Russia, 4/2 Lebedev str., St. Petersburg, 194044, Russia
| | - Oleg V Vetrovoj
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova emb, St. Petersburg, 199034, Russia
| | - Pierre G Carlier
- Neuromuscular Disease Reference Center, University of Liege, and Department of Neurology, St Luc University Hospital, Avenue Hippocrate 10, Brussels, 1200, Belgium
| | | | - Аrtur А Isaev
- Artgen Biotech PJSC, 3 Gubkina str., Moscow, 119333, Russia
| | - Roman V Deev
- Avtsyn Research Institute of Human Morphology of Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", 3 Tsyurupy str., Moscow, 117418, Russia
- Artgen Biotech PJSC, 3 Gubkina str., Moscow, 119333, Russia
| |
Collapse
|
21
|
Hassan G, Kamar SA, Rady HY, Abdelrahim DS, Abdel Hay Ibrahim NH, Lasheen NN. A study of roflumilast treatment on functional and structural changes in hippocampus in depressed Adult male Wistar rats. PLoS One 2024; 19:e0296187. [PMID: 38315652 PMCID: PMC10843119 DOI: 10.1371/journal.pone.0296187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 12/04/2023] [Indexed: 02/07/2024] Open
Abstract
Depression is a common stress disability disorder that affects higher mental functions including emotion, cognition, and behavior. It may be mediated by inflammatory cytokines that interfere with neuroendocrine function, and synaptic plasticity. Therefore, reductions in inflammation might contribute to treatment response. The current study aims to evaluate the role of Protein Kinase (PKA)- cAMP response element-binding protein (CREB)- brain derived neurotropic factor (BDNF) signaling pathway in depression and the effects of roflumilast (PDE4 inhibitor) as potential antidepressant on the activity of the PKA-CREB-BDNF signaling pathway, histology, and pro-inflammatory cytokine production. Forty Adult male Wistar rats were divided into 4 groups: Control group, Positive Control group: similar to the controls but received Roflumilast (3 mg / kg / day) by oral gavage for the last 4 weeks of the experiment, Depressed group which were exposed to chronic stress for 6 weeks, and Roflumilast-treated group which were exposed to chronic stress for 6 weeks and treated by Roflumilast (3 mg / kg / day) by oral gavage for the last 4 weeks of the experiment. The depressed group showed significant increase in immobility time with significant decrease in swimming and struggling times, significant decrease in hippocampal PKA, CERB, BDNF, Dopamine, Cortisone, and Superoxide dismutase while hippocampal Phosphodiesterase-E4, Interleukin-6, and Malondialdhyde levels were significantly elevated. These findings were significantly reversed upon Roflumilast treatment. Therefore, it could be concluded that depression is a neurodegenerative inflammatory disease and oxidative stress plays a key role in depression. Roflumilast treatment attenuated the depression behavior in rats denoting its neuroprotective, and anti-inflammatory effects.
Collapse
Affiliation(s)
- Ghida Hassan
- Medical Physiology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Sherif A. Kamar
- Anatomy Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
- Faculty of Dentistry, Al-Ahliyya Amman University, Amman, Jordan
| | - Hagar Yousry Rady
- Anatomy Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
- Anatomy Department, Armed Forces College of Medicine, Cairo, Egypt
| | - Dina Sayed Abdelrahim
- Clinical Pharmacology department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
- Pharmacology Department, Faculty of Medicine, Modern University for Technology and Information, Cairo, Egypt
| | | | - Noha N. Lasheen
- Medical Physiology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
- Associate Professor of Physiology, Faculty of Medicine, Galala University, Suez, Egypt
| |
Collapse
|
22
|
Sarabhai T, Kahl S, Gancheva S, Mastrototaro L, Dewidar B, Pesta D, Ratter-Rieck JM, Bobrov P, Jeruschke K, Esposito I, Schlensak M, Roden M. Loss of mitochondrial adaptation associates with deterioration of mitochondrial turnover and structure in metabolic dysfunction-associated steatotic liver disease. Metabolism 2024; 151:155762. [PMID: 38122893 DOI: 10.1016/j.metabol.2023.155762] [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: 08/16/2023] [Revised: 11/29/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Obesity and type 2 diabetes frequently have metabolic dysfunction-associated steatotic liver disease (MASLD) including steatohepatitis (MASH). In obesity, the liver may adapt its oxidative capacity, but the role of mitochondrial turnover in MASLD remains uncertain. METHODS This cross-sectional study compared individuals with class III obesity (n = 8/group) without (control, OBE CON; NAFLD activity score: 0.4 ± 0.1) or with steatosis (OBE MASL, 2.3 ± 0.4), or MASH (OBE MASH, 5.3 ± 0.3, p < 0.05 vs. other groups). Hepatic mitochondrial ultrastructure was assessed by transmission electron microscopy, mitochondrial respiration by high-resolution respirometry, biomarkers of mitochondrial quality control and endoplasmic reticulum (ER) stress by Western Blot. RESULTS Mitochondrial oxidative capacity was 31 % higher in OBE MASL, but 25 % lower in OBE MASH (p < 0.05 vs. OBE CON). OBE MASH showed ~1.5fold lower mitochondrial number, but ~1.2-1.5fold higher diameter and area (p < 0.001 vs. other groups). Biomarkers of autophagy (p62), mitophagy (PINK1, PARKIN), fission (DRP-1, FIS1) and fusion (MFN1/2, OPA1) were reduced in OBE MASH (p < 0.05 vs. OBE CON). OBE MASL showed lower p62, p-PARKIN/PARKIN, and p-DRP-1 (p < 0.05 vs. OBE CON). OBE MASL and MASH showed higher ER stress markers (PERK, ATF4, p-eIF2α-S51/eIF2α; p < 0.05 vs. OBE CON). Mitochondrial diameter associated inversely with fusion/fission biomarkers and with oxidative capacity, but positively with H2O2. CONCLUSION Humans with hepatic steatosis already exhibit impaired mitochondrial turnover, despite upregulated oxidative capacity, and evidence for ER stress. In MASH, oxidative stress likely mediates progressive decline of mitochondrial turnover, ultrastructure and respiration indicating that mitochondrial quality control is key for energy metabolism and may have potential for targeting MASH. ClinGovTrial:NCT01477957.
Collapse
Affiliation(s)
- Theresia Sarabhai
- Department of Endocrinology and Diabetology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany; Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany
| | - Sabine Kahl
- Department of Endocrinology and Diabetology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany; Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany
| | - Sofiya Gancheva
- Department of Endocrinology and Diabetology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany; Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany
| | - Lucia Mastrototaro
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany
| | - Bedair Dewidar
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany
| | - Dominik Pesta
- Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany; Centre for Endocrinology, Diabetes and Preventive Medicine, University Hospital Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, Cologne, Germany
| | - Jacqueline M Ratter-Rieck
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany
| | - Pavel Bobrov
- German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany; Institute for Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany
| | - Kay Jeruschke
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany
| | - Irene Esposito
- Institute of Pathology, University Hospital and Heinrich-Heine-University, Düsseldorf, Germany
| | - Matthias Schlensak
- Department of Obesity and Reflux Center, Neuwerk Hospital Mönchengladbach, Germany
| | - Michael Roden
- Department of Endocrinology and Diabetology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany; Institute for Clinical Diabetology, German Diabetes Center, Leibniz Institute for Diabetes Research at Heinrich-Heine-University, Düsseldorf, Germany; German Center for Diabetes Research, Partner Düsseldorf, Neuherberg, Germany.
| |
Collapse
|
23
|
Muhammed Y, Lazenby RA. Scanning ion conductance microscopy revealed cisplatin-induced morphological changes related to apoptosis in single adenocarcinoma cells. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:503-514. [PMID: 38167666 DOI: 10.1039/d3ay01827j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
The studies of drug-induced apoptosis play a vital role in the identification of potential drugs that could treat diseases such as cancer. Alterations in the native morphology of cancer cells following treatment with anticancer drugs serve as one of the indicators that reveal drug efficacy. Various techniques such as optical microscopy, electron microscopy (EM), and atomic force microscopy (AFM) have been used to map the three dimensional (3D) morphological changes in cells induced with drugs. However, caution should be exercised when interpreting morphological data from techniques that might alter the native morphology of cells, caused by phototoxicity, electron beam invasiveness, intrusive sample preparation, and cell membrane deformation. Herein, we have used scanning ion conductance microscopy (SICM) to study the 3D morphology and roughness of A549 adenocarcinoma cells under physiological conditions before and after cisplatin induced apoptosis, where we observed an increase in height, overall shrinkage of the cells, and irregular features form on the cell membrane. Tracking the morphology of the same single A549 cells exposed to cisplatin unveiled heterogeneity in response to the drug, formation of membrane blebs, and an increase in membrane roughness. We have also demonstrated the use of SICM for studying the effect of cisplatin on the dynamic changes in the volume of A549 cells over days. SICM is demonstrated as a technique for studying the effect of drug induced apoptosis in the same cells over time, and for multiple different single cells.
Collapse
Affiliation(s)
- Yusuf Muhammed
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
| | - Robert A Lazenby
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
| |
Collapse
|
24
|
Zheng R, Wang C, Liu R, Cai R, Sun C. Physiological and metabolic insights into the first cultured anaerobic representative of deep-sea Planctomycetes bacteria. eLife 2024; 12:RP89874. [PMID: 38265071 PMCID: PMC10945688 DOI: 10.7554/elife.89874] [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] [Indexed: 01/25/2024] Open
Abstract
Planctomycetes bacteria are ubiquitously distributed across various biospheres and play key roles in global element cycles. However, few deep-sea Planctomycetes members have been cultivated, limiting our understanding of Planctomycetes in the deep biosphere. Here, we have successfully cultured a novel strain of Planctomycetes (strain ZRK32) from a deep-sea cold seep sediment. Our genomic, physiological, and phylogenetic analyses indicate that strain ZRK32 is a novel species, which we propose be named: Poriferisphaera heterotrophicis. We show that strain ZRK32 replicates using a budding mode of division. Based on the combined results from growth assays and transcriptomic analyses, we found that rich nutrients, or supplementation with NO3- or NH4+ promoted the growth of strain ZRK32 by facilitating energy production through the tricarboxylic acid cycle and the Embden-Meyerhof-Parnas glycolysis pathway. Moreover, supplementation with NO3- or NH4+ induced strain ZRK32 to release a bacteriophage in a chronic manner, without host cell lysis. This bacteriophage then enabled strain ZRK32, and another marine bacterium that we studied, to metabolize nitrogen through the function of auxiliary metabolic genes. Overall, these findings expand our understanding of deep-sea Planctomycetes bacteria, while highlighting their ability to metabolize nitrogen when reprogrammed by chronic viruses.
Collapse
Affiliation(s)
- Rikuan Zheng
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega-Science, Chinese Academy of SciencesQingdaoChina
| | - Chong Wang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega-Science, Chinese Academy of SciencesQingdaoChina
| | - Rui Liu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega-Science, Chinese Academy of SciencesQingdaoChina
| | - Ruining Cai
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega-Science, Chinese Academy of SciencesQingdaoChina
- College of Earth Science, University of Chinese Academy of SciencesBeijingChina
| | - Chaomin Sun
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of SciencesQingdaoChina
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
- Center of Ocean Mega-Science, Chinese Academy of SciencesQingdaoChina
- College of Earth Science, University of Chinese Academy of SciencesBeijingChina
| |
Collapse
|
25
|
Luan Y, Yang Y, Luan Y, Liu H, Xing H, Pei J, Liu H, Qin B, Ren K. Targeting ferroptosis and ferritinophagy: new targets for cardiovascular diseases. J Zhejiang Univ Sci B 2024; 25:1-22. [PMID: 38163663 PMCID: PMC10758208 DOI: 10.1631/jzus.b2300097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/21/2023] [Indexed: 01/03/2024]
Abstract
Cardiovascular diseases (CVDs) are a leading factor driving mortality worldwide. Iron, an essential trace mineral, is important in numerous biological processes, and its role in CVDs has raised broad discussion for decades. Iron-mediated cell death, namely ferroptosis, has attracted much attention due to its critical role in cardiomyocyte damage and CVDs. Furthermore, ferritinophagy is the upstream mechanism that induces ferroptosis, and is closely related to CVDs. This review aims to delineate the processes and mechanisms of ferroptosis and ferritinophagy, and the regulatory pathways and molecular targets involved in ferritinophagy, and to determine their roles in CVDs. Furthermore, we discuss the possibility of targeting ferritinophagy-induced ferroptosis modulators for treating CVDs. Collectively, this review offers some new insights into the pathology of CVDs and identifies possible therapeutic targets.
Collapse
Affiliation(s)
- Yi Luan
- Clinical Systems Biology Research Laboratories, Translational Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yang Yang
- Clinical Systems Biology Research Laboratories, Translational Medicine Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Ying Luan
- State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
| | - Hui Liu
- School of Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China
| | - Han Xing
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou 450052, China
- Henan Engineering Research Center for Application & Translation of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou 450052, China
| | - Jinyan Pei
- Quality Management Department, Henan No. 3 Provincial People's Hospital, Zhengzhou 450052, China
| | - Hengdao Liu
- Department of Cardiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. ,
| | - Bo Qin
- Center for Translational Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. ,
| | - Kaidi Ren
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou 450052, China.
- Henan Engineering Research Center for Application & Translation of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou 450052, China.
| |
Collapse
|
26
|
Arsana KGY, Saladino GM, Brodin B, Toprak MS, Hertz HM. Laboratory Liquid-Jet X-ray Microscopy and X-ray Fluorescence Imaging for Biomedical Applications. Int J Mol Sci 2024; 25:920. [PMID: 38255992 PMCID: PMC10815599 DOI: 10.3390/ijms25020920] [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: 11/24/2023] [Revised: 12/30/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Diffraction-limited resolution and low penetration depth are fundamental constraints in optical microscopy and in vivo imaging. Recently, liquid-jet X-ray technology has enabled the generation of X-rays with high-power intensities in laboratory settings. By allowing the observation of cellular processes in their natural state, liquid-jet soft X-ray microscopy (SXM) can provide morphological information on living cells without staining. Furthermore, X-ray fluorescence imaging (XFI) permits the tracking of contrast agents in vivo with high elemental specificity, going beyond attenuation contrast. In this study, we established a methodology to investigate nanoparticle (NP) interactions in vitro and in vivo, solely based on X-ray imaging. We employed soft (0.5 keV) and hard (24 keV) X-rays for cellular studies and preclinical evaluations, respectively. Our results demonstrated the possibility of localizing NPs in the intracellular environment via SXM and evaluating their biodistribution with in vivo multiplexed XFI. We envisage that laboratory liquid-jet X-ray technology will significantly contribute to advancing our understanding of biological systems in the field of nanomedical research.
Collapse
Affiliation(s)
| | | | | | | | - Hans M. Hertz
- Department of Applied Physics, Biomedical and X-ray Physics, KTH Royal Institute of Technology, 10691 Stockholm, Sweden (G.M.S.)
| |
Collapse
|
27
|
De Castilho T, Rosa GDS, Stievani FC, Apolônio EVP, Pfeifer JPH, Altheman VG, Palialogo V, Santos NJ, Fonseca-Alves CE, Alves ALG. Biocompatibility of hydrogel derived from equine tendon extracellular matrix in horses subcutaneous tissue. Front Bioeng Biotechnol 2024; 11:1296743. [PMID: 38260745 PMCID: PMC10801062 DOI: 10.3389/fbioe.2023.1296743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/04/2023] [Indexed: 01/24/2024] Open
Abstract
Tendinopathies account for a substantial proportion of musculoskeletal injuries. To improve treatment outcomes for partial and total tendon ruptures, new therapies are under investigation. These include the application of mesenchymal stem cells (MSCs) and biocompatible scaffolds derived from the Extracellular Matrix (ECM). Synthetic polymer hydrogels have not demonstrated results as promising as those achieved with ECM hydrogels sourced from the original tissue. This study aimed to evaluate the biocompatibility of a hydrogel formulated from equine tendon ECM. Six horses were administered three subcutaneous doses of the hydrogel, with a saline solution serving as a control. Biopsies were conducted on days 7, 14, and 56 post-application to gauge the hydrogel's impact. Throughout the experiment, the horse's physical condition remained stable. Thermographic analyses revealed a temperature increase in the treated groups compared to the control group within the initial 12 h. The von Frey test, used to measure the mechanical nociceptive threshold, also showed significant differences between the treated group and the control group at 6 h, 21 days, and 28 days. Histopathological analyses identified an inflammatory response on day 7, which was absent on days 14 and 56. Transmission electron microscopy indicated a decrease in inflammatory cellularity, while immunohistochemistry staining suggested an increased presence of inflammatory factors on day 14. In summary, the hydrogel is easily injectable, triggers a temporary local inflammatory response, and integrates into the adjacent tissue from day 14 onwards.
Collapse
Affiliation(s)
- Thiago De Castilho
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Gustavo dos Santos Rosa
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Fernanda de Castro Stievani
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Emanuel Vítor Pereira Apolônio
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - João Pedro Hübbe Pfeifer
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Vittoria Guerra Altheman
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Valéria Palialogo
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Nilton José Dos Santos
- Laboratory of Metabolic Disorders, School of Applied Sciences, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Carlos Eduardo Fonseca-Alves
- Department of Veterinary Surgery and Animal Reproduction, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Ana Liz Garcia Alves
- Department of Veterinary Surgery and Animal Reproduction, Regenerative Medicine Lab, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| |
Collapse
|
28
|
Wang YZ, An XL, Fan XT, Pu Q, Li H, Liu WZ, Chen Z, Su JQ. Visible light-activated photosensitizer inhibits the plasmid-mediated horizontal gene transfer of antibiotic resistance genes. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132564. [PMID: 37734313 DOI: 10.1016/j.jhazmat.2023.132564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/04/2023] [Accepted: 09/13/2023] [Indexed: 09/23/2023]
Abstract
Inhibition of plasmid transfer, including transformation and conjugation, is essential to prevent the spread of plasmid-encoded antimicrobial resistance. Photosensitizers have been successfully used in the treatment of serious infectious diseases, however, the effects of photosensitizers on the plasmid transfer are still elusive. In this study, we determined the transformation and conjugation efficiency of plasmid pUC19 and pRP4, respectively, when exposed to a photosensitizer (Visible Light-activated Rose Bengal, VLRB). The results showed that the activation of VLRB resulted in up to a 580-fold decrease in the transformation frequency of pUC19 and a 10-fold decrease in the conjugation frequency of pRP4 compared with the non-VLRB control. The inhibition of pUC19 transformation by VLRB exhibited a dose-dependent manner and was attributed to the changes in the plasmid conformation. The inhibition of pRP4 conjugation was associated with the generation of extracellular free radicals, induced oxidative stress, suppression of the mating pair formation gene (trbBp) and DNA transfer and replication gene (trfAp), and enhanced expression of the global regulatory genes (korA, korB, and trbA). These findings highlight the potential of visible light-activated photosensitizer for mitigating the dissemination of plasmid-encoded antibiotic resistance genes.
Collapse
Affiliation(s)
- Yan-Zi Wang
- Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen 361021, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Xin-Li An
- Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen 361021, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Xiao-Ting Fan
- Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen 361021, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Qiang Pu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Hu Li
- Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen 361021, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Wen-Zhen Liu
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China; State Key Laboratory of Structural Chemistry, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zhuo Chen
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China; State Key Laboratory of Structural Chemistry, CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Jian-Qiang Su
- Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen 361021, China; University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China.
| |
Collapse
|
29
|
Zdrojkowski Ł, Pawliński B, Skierbiszewska K, Jasiński T, Domino M. Assessment of Connective Tissue in the Equine Uterus and Cervix: Review of Clinical Impact and Staining Options. Animals (Basel) 2024; 14:156. [PMID: 38200887 PMCID: PMC10778531 DOI: 10.3390/ani14010156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/25/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024] Open
Abstract
Uterine diseases stand as the primary cause of infertility in mares; however, the diagnostic process often relies on obtaining endometrial biopsies and their hematoxylin-eosin staining. This review seeks to present the variability of uterine changes and their impact on fertility and underscore the utility of special stains, such as Masson trichrome, picrosirius red, elastica van Gieson, or periodic acid-Schiff, in enhancing diagnostic breadth. Connective tissue evaluation in the cervix is discussed, as it is subjected to cyclic changes and the impact on overall fertility. Vascular changes, particularly prevalent in multiparous mares, play a crucial role in adapting to physiological and pathological alterations, affecting early gestation and impeding placental development. Given that uterine vascular pathologies often involve fibrotic changes, connective tissue stains emerge as a valuable tool in this context. Moreover, equine endometriosis, predominantly associated with endometrial fibrosis, further highlights the relevance of special stains, suggesting their underutilization in the diagnostic process. Recognizing the subjective nature of diagnosing uterine pathologies and the need for additional diagnostic tools, we advocate for using dedicated stains in the histopathological evaluation of uterine samples. In conclusion, we encourage scientists and diagnosticians to embrace additional tools that enhance pathology visualization, enabling more reliable diagnoses concerning expected fertility.
Collapse
Affiliation(s)
- Łukasz Zdrojkowski
- Department of Large Animal Diseases and Clinic, Institute of Veterinary Medicine, Warsaw University of Life Sciences (WULS–SGGW), 02-787 Warsaw, Poland; (B.P.); (K.S.); (T.J.)
| | | | | | | | - Małgorzata Domino
- Department of Large Animal Diseases and Clinic, Institute of Veterinary Medicine, Warsaw University of Life Sciences (WULS–SGGW), 02-787 Warsaw, Poland; (B.P.); (K.S.); (T.J.)
| |
Collapse
|
30
|
Rais N, Ved A, Ahmad R, Parveen A. Research-based Analytical Procedures to Evaluate Diabetic Biomarkers and Related Parameters: In Vitro and In Vivo Methods. Curr Diabetes Rev 2024; 20:e201023222417. [PMID: 37867271 DOI: 10.2174/0115733998252495231011182012] [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: 03/19/2023] [Revised: 08/24/2023] [Accepted: 09/08/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND The degenerative tendency of diabetes leads to micro- and macrovascular complications due to abnormal levels of biochemicals, particularly in patients with poor diabetic control. Diabetes is supposed to be treated by reducing blood glucose levels, scavenging free radicals, and maintaining other relevant parameters close to normal ranges. In preclinical studies, numerous in vivo trials on animals as well as in vitro tests are used to assess the antidiabetic and antioxidant effects of the test substances. Since a substance that performs poorly in vitro won't perform better in vivo, the outcomes of in vitro studies can be utilized as a direct indicator of in vivo activities. OBJECTIVE The objective of the present study is to provide research scholars with a comprehensive overview of laboratory methods and procedures for a few selected diabetic biomarkers and related parameters. METHOD The search was conducted on scientific database portals such as ScienceDirect, PubMed, Google Scholar, BASE, DOAJ, etc. Conclusion: The development of new biomarkers is greatly facilitated by modern technology such as cell culture research, lipidomics study, microRNA biomarkers, machine learning techniques, and improved electron microscopies. These biomarkers do, however, have some usage restrictions. There is a critical need to find more accurate and sensitive biomarkers. With a few modifications, these biomarkers can be used with or even replace conventional markers of diabetes.
Collapse
Affiliation(s)
- Nadeem Rais
- Department of Pharmacy, Bhagwant University, Ajmer, Rajasthan 305004, India
| | - Akash Ved
- Goel Institute of Pharmaceutical Sciences, Lucknow, Uttar Pradesh 226028, India
| | - Rizwan Ahmad
- Department of Pharmacy, Vivek College of Technical Education, Bijnor, Uttar Pradesh 246701, India
| | - Aashna Parveen
- Faculty of Applied Science, Bhagwant Global University, Kotdwar, Uttarakhand 246149, India
| |
Collapse
|
31
|
McLaughlin MR, Weaver SA, Syed F, Evans-Molina C. Advanced Imaging Techniques for the Characterization of Subcellular Organelle Structure in Pancreatic Islet β Cells. Compr Physiol 2023; 14:5243-5267. [PMID: 38158370 DOI: 10.1002/cphy.c230002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Type 2 diabetes (T2D) affects more than 32.3 million individuals in the United States, creating an economic burden of nearly $966 billion in 2021. T2D results from a combination of insulin resistance and inadequate insulin secretion from the pancreatic β cell. However, genetic and physiologic data indicate that defects in β cell function are the chief determinant of whether an individual with insulin resistance will progress to a diagnosis of T2D. The subcellular organelles of the insulin secretory pathway, including the endoplasmic reticulum, Golgi apparatus, and secretory granules, play a critical role in maintaining the heavy biosynthetic burden of insulin production, processing, and secretion. In addition, the mitochondria enable the process of insulin release by integrating the metabolism of nutrients into energy output. Advanced imaging techniques are needed to determine how changes in the structure and composition of these organelles contribute to the loss of insulin secretory capacity in the β cell during T2D. Several microscopy techniques, including electron microscopy, fluorescence microscopy, and soft X-ray tomography, have been utilized to investigate the structure-function relationship within the β cell. In this overview article, we will detail the methodology, strengths, and weaknesses of each approach. © 2024 American Physiological Society. Compr Physiol 14:5243-5267, 2024.
Collapse
Affiliation(s)
- Madeline R McLaughlin
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Staci A Weaver
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA
- The Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Farooq Syed
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA
- The Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Carmella Evans-Molina
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA
- The Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Roudebush VA Medical Center, Indianapolis, Indiana, USA
| |
Collapse
|
32
|
Kim JY, Yang JE, Mitchell JW, English LA, Yang SZ, Tenpas T, Dent EW, Wildonger J, Wright ER. Handling Difficult Cryo-ET Samples: A Study with Primary Neurons from Drosophila melanogaster. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:2127-2148. [PMID: 37966978 PMCID: PMC11168236 DOI: 10.1093/micmic/ozad125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/01/2023] [Accepted: 10/18/2023] [Indexed: 11/17/2023]
Abstract
Cellular neurobiology has benefited from recent advances in the field of cryo-electron tomography (cryo-ET). Numerous structural and ultrastructural insights have been obtained from plunge-frozen primary neurons cultured on electron microscopy grids. With most primary neurons having been derived from rodent sources, we sought to expand the breadth of sample availability by using primary neurons derived from 3rd instar Drosophila melanogaster larval brains. Ultrastructural abnormalities were encountered while establishing this model system for cryo-ET, which were exemplified by excessive membrane blebbing and cellular fragmentation. To optimize neuronal samples, we integrated substrate selection, micropatterning, montage data collection, and chemical fixation. Efforts to address difficulties in establishing Drosophila neurons for future cryo-ET studies in cellular neurobiology also provided insights that future practitioners can use when attempting to establish other cell-based model systems.
Collapse
Affiliation(s)
- Joseph Y. Kim
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Jie E. Yang
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- Cryo-Electron Microscopy Research Center, University of Wisconsin-Madison, Madison, WI 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Josephine W. Mitchell
- Department of Chemistry and Biochemistry, Kalamazoo College, Kalamazoo, MI 49006, USA
| | - Lauren A. English
- Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Sihui Z. Yang
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Tanner Tenpas
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Erik W. Dent
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Jill Wildonger
- Departments of Pediatrics and Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
| | - Elizabeth R. Wright
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- Cryo-Electron Microscopy Research Center, University of Wisconsin-Madison, Madison, WI 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- Morgridge Institute for Research, University of Wisconsin-Madison, Madison, WI 53715, USA
| |
Collapse
|
33
|
Zhang H, Dong J, Yan Y, Liu S, Ye X, Gao F, Sun C. Development of a Highly Permissive Mandarin Fish ( Siniperca chuatsi) Kidney Cell Line for Mandarin Fish Ranavirus Using a Single-Cell Cloning Method. Cells 2023; 13:18. [PMID: 38201223 PMCID: PMC10778425 DOI: 10.3390/cells13010018] [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: 11/08/2023] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Mandarin fish ranavirus (MRV) infection poses a substantial challenge to the mandarin fish culture industry as no effective preventive or therapeutic measures currently exist. The creation of a highly permissive cell line from a natural host is crucial for developing a vaccine for MRV and understanding its pathogenic mechanisms. In this research, the mandarin fish (Siniperca chuatsi) kidney cell line (SCK) was isolated from mandarin fish kidneys. Subsequently, SCK-a to SCK-g monoclonal cell lines were derived from the SCK cell population, distinguished by morphological variations. Notably, MRV infection induced an advanced cytopathic effect (CPE) in almost all cells of the SCK-f clone. Further tests showed that MRV achieved a peak viral titer of 1010.7 50% tissue culture infectious dose (TCID50)/mL and consistently exceeded 1010 TCID50/mL across nine passages in SCK-f cells. Electron microscopy verified the MRV virion integrity within SCK-f. In vivo experiments revealed that MRV infections led to cumulative mortality rates of 86.9% in mandarin fish and 88.9% in largemouth bass (Micropterus salmoides). Such results suggest that SCK-f is highly permissive to MRV. This study underscores the importance of cellular diversity in developing viral permissive cell lines. The SCK monoclonal cell line pool may offer potential for generating highly permissive cell lines for other mandarin fish viruses.
Collapse
Affiliation(s)
- Hetong Zhang
- Key Laboratory of Tropical and Subtropical Fisheries Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China; (H.Z.); (J.D.); (Y.Y.); (X.Y.)
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China
| | - Junjian Dong
- Key Laboratory of Tropical and Subtropical Fisheries Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China; (H.Z.); (J.D.); (Y.Y.); (X.Y.)
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China
| | - Yunyun Yan
- Key Laboratory of Tropical and Subtropical Fisheries Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China; (H.Z.); (J.D.); (Y.Y.); (X.Y.)
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China
- College of Oceanography, Agriculture University of Hebei, Qinhuangdao 066000, China
| | - Shanshan Liu
- School of Ecology, Sun Yat-sen University, Guangzhou 510275, China;
| | - Xing Ye
- Key Laboratory of Tropical and Subtropical Fisheries Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China; (H.Z.); (J.D.); (Y.Y.); (X.Y.)
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China
- School of Ecology, Sun Yat-sen University, Guangzhou 510275, China;
| | - Fengying Gao
- Key Laboratory of Tropical and Subtropical Fisheries Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China; (H.Z.); (J.D.); (Y.Y.); (X.Y.)
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China
- School of Ecology, Sun Yat-sen University, Guangzhou 510275, China;
| | - Chengfei Sun
- Key Laboratory of Tropical and Subtropical Fisheries Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China; (H.Z.); (J.D.); (Y.Y.); (X.Y.)
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510310, China
- School of Ecology, Sun Yat-sen University, Guangzhou 510275, China;
| |
Collapse
|
34
|
Olofsson Bagge R, Berndtsson J, Urzì O, Lötvall J, Micaroni M, Crescitelli R. Three-dimensional reconstruction of interstitial extracellular vesicles in human liver as determined by electron tomography. J Extracell Vesicles 2023; 12:e12380. [PMID: 38010190 PMCID: PMC10680575 DOI: 10.1002/jev2.12380] [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: 06/26/2023] [Revised: 10/03/2023] [Accepted: 10/25/2023] [Indexed: 11/29/2023] Open
Abstract
Extracellular vesicles (EVs) are lipid bilayer nanoparticles involved in cell-cell communication that are released into the extracellular space by all cell types. The cargo of EVs includes proteins, lipids, nucleic acids, and metabolites reflecting their cell of origin. EVs have recently been isolated directly from solid tissues, and this may provide insights into how EVs mediate communication between cells in vivo. Even though EVs have been isolated from tissues, their point of origin when they are in the interstitial space has been uncertain. In this study, we performed three-dimensional (3D) reconstruction using transmission electron tomography of metastatic and normal liver tissues with a focus on the presence of EVs in the interstitium. After chemical fixation of the samples and subsequent embedding of tissue pieces in resin, ultrathin slices (300 nm) were cut and imaged on a 120 ekV transmission electron microscopy as a tilt series (a series of subsequent images tilted at different angles). These were then computationally illustrated in a 3D manner to reconstruct the imaged tissue volume. We identified the cells delimiting the interstitial space in both types of tissues, and small distinct spherical structures with a diameter of 30-200 nm were identified between the cells. These round structures appeared to be more abundant in metastatic tissue compared to normal tissue. We suggest that the observed spherical structures in the interstitium of the metastatic and non-metastatic liver represent EVs. This work thus provides the first 3D visualization of EVs in human tissue.
Collapse
Affiliation(s)
- Roger Olofsson Bagge
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical SciencesSahlgrenska Academy, University of GothenburgGothenburgSweden
- Department of SurgerySahlgrenska University Hospital, Region Västra GötalandGothenburgSweden
| | - Jens Berndtsson
- Centre for Cellular Imaging Core FacilitySahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Ornella Urzì
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical SciencesSahlgrenska Academy, University of GothenburgGothenburgSweden
- St. Anna Children's Cancer Research Institute (CCRI)ViennaAustria
| | - Jan Lötvall
- Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine at Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Massimo Micaroni
- Centre for Cellular Imaging Core FacilitySahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Rossella Crescitelli
- Sahlgrenska Center for Cancer Research and Wallenberg Centre for Molecular and Translational Medicine, Department of Surgery, Institute of Clinical SciencesSahlgrenska Academy, University of GothenburgGothenburgSweden
| |
Collapse
|
35
|
Qiao L, Dou X, Song X, Chang J, Zeng X, Zhu L, Yi H, Xu C. Replacing dietary sodium selenite with biogenic selenium nanoparticles improves the growth performance and gut health of early-weaned piglets. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2023; 15:99-113. [PMID: 38023380 PMCID: PMC10665811 DOI: 10.1016/j.aninu.2023.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 12/01/2023]
Abstract
Selenium nanoparticles (SeNPs) are proposed as a safer and more effective selenium delivery system than sodium selenite (Na2SeO3). Here, we investigated the effects of replacing dietary Na2SeO3 with SeNPs synthesized by Lactobacillus casei ATCC 393 on the growth performance and gut health of early-weaned piglets. Seventy-two piglets (Duroc × Landrace × Large Yorkshire) weaned at 21 d of age were divided into the control group (basal diet containing 0.3 mg Se/kg from Na2SeO3) and SeNPs group (basal diet containing 0.3 mg Se/kg from SeNPs) during a 14-d feeding period. The results revealed that SeNPs supplementation increased the average daily gain (P = 0.022) and average daily feed intake (P = 0.033), reduced (P = 0.056) the diarrhea incidence, and improved (P = 0.013) the feed conversion ratio compared with Na2SeO3. Additionally, SeNPs increased jejunal microvilli height (P = 0.006) and alleviated the intestinal barrier dysfunction by upregulating (P < 0.05) the expression levels of mucin 2 and tight junction proteins, increasing (P < 0.05) Se availability, and maintaining mitochondrial structure and function, thereby improving antioxidant capacity and immunity. Furthermore, metabolomics showed that SeNPs can regulate lipid metabolism and participate in the synthesis, secretion and action of parathyroid hormone, proximal tubule bicarbonate reclamation and tricarboxylic acid cycle. Moreover, SeNPs increased (P < 0.05) the abundance of Holdemanella and the levels of acetate and propionate. Correlation analysis suggested that Holdemanella was closely associated with the regulatory effects of SeNPs on early-weaned piglets through participating in lipid metabolism. Overall, replacing dietary Na2SeO3 with biogenic SeNPs could be a potential nutritional intervention strategy to prevent early-weaning syndrome in piglets.
Collapse
Affiliation(s)
- Lei Qiao
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Xina Dou
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Xiaofan Song
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Jiajing Chang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Xiaonan Zeng
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Lixu Zhu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Hongbo Yi
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Provincial Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science of Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong 510640, China
| | - Chunlan Xu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| |
Collapse
|
36
|
Feng X, Yu Z, Fang H, Jiang H, Yang G, Chen L, Zhou X, Hu B, Qin C, Hu G, Xing G, Zhao B, Shi Y, Guo J, Liu F, Han B, Zechmann B, He Y, Liu F. Plantorganelle Hunter is an effective deep-learning-based method for plant organelle phenotyping in electron microscopy. NATURE PLANTS 2023; 9:1760-1775. [PMID: 37749240 DOI: 10.1038/s41477-023-01527-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 08/25/2023] [Indexed: 09/27/2023]
Abstract
Accurate delineation of plant cell organelles from electron microscope images is essential for understanding subcellular behaviour and function. Here we develop a deep-learning pipeline, called the organelle segmentation network (OrgSegNet), for pixel-wise segmentation to identify chloroplasts, mitochondria, nuclei and vacuoles. OrgSegNet was evaluated on a large manually annotated dataset collected from 19 plant species and achieved state-of-the-art segmentation performance. We defined three digital traits (shape complexity, electron density and cross-sectional area) to track the quantitative features of individual organelles in 2D images and released an open-source web tool called Plantorganelle Hunter for quantitatively profiling subcellular morphology. In addition, the automatic segmentation method was successfully applied to a serial-sectioning scanning microscope technique to create a 3D cell model that offers unique views of the morphology and distribution of these organelles. The functionalities of Plantorganelle Hunter can be easily operated, which will increase efficiency and productivity for the plant science community, and enhance understanding of subcellular biology.
Collapse
Affiliation(s)
- Xuping Feng
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- The Rural Development Academy & Agricultural Experiment Station, Zhejiang University, Huzhou, China
| | - Zeyu Yu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- The Rural Development Academy & Agricultural Experiment Station, Zhejiang University, Huzhou, China
| | - Hui Fang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Huzhou Institute of Zhejiang University, Hangzhou, China
| | - Hangjin Jiang
- Center for Data Science, Zhejiang University, Hangzhou, China
| | - Guofeng Yang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- The Rural Development Academy & Agricultural Experiment Station, Zhejiang University, Huzhou, China
| | - Liting Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xinran Zhou
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Bing Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Biological Experiment Teaching Center, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Chun Qin
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Biological Experiment Teaching Center, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Gang Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Biological Experiment Teaching Center, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Guipei Xing
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Biological Experiment Teaching Center, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Boxi Zhao
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yongqiang Shi
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Jiansheng Guo
- Center of Cryo-Electron Microscopy, Zhejiang University School of Medicine, Hangzhou, China
| | - Feng Liu
- School of Mathematics and Statistics, University of Melbourne, Parkville, Australia
| | - Bo Han
- Department of Computer Science, Hong Kong Baptist University, Hong Kong, China
| | - Bernd Zechmann
- Center for Microscopy and Imaging, Baylor University, Waco, TX, USA
| | - Yong He
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China.
| | - Feng Liu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China.
| |
Collapse
|
37
|
Pavathuparambil Abdul Manaph N, Ltaief SM, Nour-Eldine W, Ponraj J, Agcaoili J, Mansour S, Al-Shammari AR. An optimized protocol for the preparation of blood immune cells for transmission electron microscopy. Micron 2023; 173:103517. [PMID: 37556900 DOI: 10.1016/j.micron.2023.103517] [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: 04/03/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 08/11/2023]
Abstract
Transmission electron microscopy (TEM) is a powerful technique that enables visualization of structural details inside cells. Prior to TEM imaging, biological samples must undergo several preparation steps that are optimized according to the sample type. Currently, there are limited protocols for the preparation of blood samples for TEM imaging. Here, we provide a detailed step-by-step method for preparing blood samples for TEM imaging. This protocol enables robust visualization of the ultrastructures of blood immune cells. In addition, we describe the typical cellular features that can be used to distinguish between different immune cells in the blood, such as neutrophils, eosinophils, monocytes, and lymphocytes. This protocol is useful for studying ultrastructural changes in blood immune cells under various physiological and disease conditions.
Collapse
Affiliation(s)
| | - Samia M Ltaief
- Neurological Disorders Research Center, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Wared Nour-Eldine
- Neurological Disorders Research Center, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | | | - John Agcaoili
- Core Labs, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Said Mansour
- Core Labs, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar
| | - Abeer R Al-Shammari
- Neurological Disorders Research Center, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
| |
Collapse
|
38
|
An Y, Zhai Z, Wang X, Ding Y, He L, Li L, Mo Q, Mu C, Xie R, Liu T, Zhong W, Wang B, Cao H. Targeting Desulfovibrio vulgaris flagellin-induced NAIP/NLRC4 inflammasome activation in macrophages attenuates ulcerative colitis. J Adv Res 2023; 52:219-232. [PMID: 37586642 PMCID: PMC10555950 DOI: 10.1016/j.jare.2023.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/18/2023] Open
Abstract
INTRODUCTION The perturbations of gut microbiota could interact with excessively activated immune responses and play key roles in the etiopathogenesis of ulcerative colitis (UC). Desulfovibrio, the most predominant sulfate reducing bacteria (SRB) resided in the human gut, was observed to overgrow in patients with UC. The interactions between specific gut microbiota and drugs and their impacts on UC treatment have not been demonstrated well. OBJECTIVES This study aimed to elucidate whether Desulfovibrio vulgaris (D. vulgaris, DSV) and its flagellin could activate nucleotide-binding oligomerization domain-like receptors (NLR) family of apoptosis inhibitory proteins (NAIP) / NLR family caspase activation and recruitment domain-containing protein 4 (NLRC4) inflammasome and promote colitis, and further evaluate the efficacy of eugeniin targeting the interaction interface of D. vulgaris flagellin (DVF) and NAIP to attenuate UC. METHODS The abundance of DSV and the occurrence of macrophage pyroptosis in human UC tissues were investigated. Colitis in mice was established by dextran sulfate sodium (DSS) and gavaged with DSV or its purified flagellin. NAIP/NLRC4 inflammasome activation and macrophage pyroptosis were evaluated in vivo and in vitro. The effects of eugeniin on blocking the interaction of DVF and NAIP/NLRC4 and relieving colitis were also assessed. RESULTS The abundance of DSV increased in the feces of patients with UC and was found to be associated with disease activity. DSV and its flagellin facilitated DSS-induced colitis in mice. Mechanistically, RNA sequencing showed that gene expression associated with inflammasome complex and pyroptosis was upregulated after DVF treatment in macrophages. DVF was further demonstrated to induce significant macrophage pyroptosis in vitro, depending on NAIP/NLRC4 inflammasome activation. Furthermore, eugeniin was screened as an inhibitor of the interface between DVF and NAIP and successfully alleviated the proinflammatory effect of DVF in colitis. CONCLUSION Targeting DVF-induced NAIP/NLRC4 inflammasome activation and macrophage pyroptosis ameliorates UC. This finding is of great significance for exploring the gut microbiota-host interactions in UC development and providing new insights for precise treatment.
Collapse
Affiliation(s)
- Yaping An
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Zihan Zhai
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Xin Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Yiyun Ding
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Linlin He
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Lingfeng Li
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Qi Mo
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Chenlu Mu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Runxiang Xie
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Tianyu Liu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Weilong Zhong
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, National Key Clinical Specialty, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China.
| |
Collapse
|
39
|
Osman NAHK, Abd-Elazeem OM, Al-Eisa RA, El-Shenawy NS. Anticancer and antimicrobial evaluation of extract from brown algae Hormophysa cuneiformis. J Appl Biomed 2023; 21:121-136. [PMID: 37747312 DOI: 10.32725/jab.2023.016] [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: 01/07/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023] Open
Abstract
AIM We investigated the antimicrobial and anticancer properties of an ethanol crude extract of Red Sea brown alga (Hormophysa cuneiformis) from Egypt. METHODS Extraction was achieved by mixing 100 g of sample powder with absolute ethanol, incubating at 37 °C overnight in a shaking incubator, and then collecting the extract. The extract's antimicrobial activity was tested using a well diffusion assay against the tested pathogens (Escherichia coli, Bacillus subtilis, Staphylococcus aureus, and Candida albicans) in comparison to commercial antibiotics. Anticancer activity was assessed using MTT assay on MCF-7, HepG-2, and HEP-2 cell lines. The anticancer mechanism of action against the HepG-2 cell line was investigated using cell cycle analysis, Annexin V, and antioxidant enzymes, in addition to transmission electron microscopy. RESULTS GC-MS phytoconstituent profile of the extract was dominant with fatty acids. A broad antimicrobial effect against all the pathogenic isolates of E. coli, S. aureus, B. subtitles, and C. albicans was demonstrated, especially at the high concentration in comparison to commercial antibiotics. The extract could inhibit the growth of the tested cell lines. We observed the most significant effect on HepG-2 cells, and the concentration of the extract played a role in the level of inhibition (IC50 of 44.6 ± 0.6 µg/ml). The extract had negligible effects on Vero normal cell lines at the lower concentration, with slight toxicity (90.8% viability) at the highest concentration (500 µg/ml). At this same concentration, the extract caused 80-92% inhibition of the cancer cell lines. The extract appears to have demonstrated promising effects on cancer cells. It induces programmed cell death (apoptosis), arrests the cell cycle, and affects the oxidative/antioxidant balance within the cells, potentially leading to the suppression or elimination of cancer cells. These findings are encouraging and may have implications for cancer treatment or further research in this area. More action of extract was seen against bacteria than fungi, with a wide antibacterial impact against all of the tested isolates, notably at the high concentration in comparison to conventional antibiotics. CONCLUSION According to the findings, H. cuneiformis may be a valuable source of chemicals that are both antimicrobial and anticancer.
Collapse
Affiliation(s)
- Nehal A H K Osman
- Suez Canal University, Faculty of Science, Botany and Microbiology Department, Ismailia 41522, Egypt
| | - Omniya M Abd-Elazeem
- Suez Canal University, Faculty of Science, Department of Zoology, Ismailia 41522, Egypt
| | - Rasha A Al-Eisa
- Taif University, College of Sciences, Department of Biology, Taif 21944, Saudi Arabia
| | - Nahla S El-Shenawy
- Suez Canal University, Faculty of Science, Department of Zoology, Ismailia 41522, Egypt
| |
Collapse
|
40
|
Zheng R, Wang C, Cai R, Shan Y, Sun C. Mechanisms of nucleic acid degradation and high hydrostatic pressure tolerance of a novel deep-sea wall-less bacterium. mBio 2023; 14:e0095823. [PMID: 37551978 PMCID: PMC10470597 DOI: 10.1128/mbio.00958-23] [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: 04/16/2023] [Accepted: 06/26/2023] [Indexed: 08/09/2023] Open
Abstract
Wall-less bacteria are broadly distributed in diverse habitats. They evolved from a common ancestor within the Firmicutes phylum through reductive evolution. Here, we report the cultivation, characterization, and polyphasic taxonomic analysis of the novel free-living wall-less bacterium, Hujiaoplasma nucleasis zrk29. We demonstrated that strain zrk29 had a strong ability to degrade DNA and RNA both under laboratory conditions and in the deep sea. We found that nucleic acids induced strain zrk29 to release chronic bacteriophages which supported strain zrk29 and other marine bacteria to metabolize nucleic acids without lysing host cells. We also showed that strain zrk29 tolerated high hydrostatic pressure via two pathways: (i) by transporting cations into its cells to increase intracellular osmotic pressure and (ii) by adjusting the unsaturated fatty acid chain content in its cell membrane phospholipids to increase cell membrane fluidity. This study extends our understanding of free-living wall-less bacteria and provides a useful model to explore the unique adaptation mechanisms of deep-sea microbes. IMPORTANCE The unique physiology and survival strategies of the Tenericutes bacterium-a typical wall-less bacterium-have fascinated scientists and the public, especially in extreme deep-sea environments where there is high hydrostatic pressure (HHP) and limited availability of nutrients. Here, we have isolated a novel free-living Tenericutes strain from deep-sea sediment and have found that it metabolizes nucleic acids with the support of chronic bacteriophages. This Tenericutes strain tolerates HHP stress by increasing intracellular osmotic pressure and the unsaturated fatty acid chain content of phospholipids in its cell membrane. Our results provide insights into the unique physiology of deep-sea free-living Tenericutes bacteria and highlight the significant role that chronic bacteriophages play in assisting wall-less bacteria to adapt to harsh conditions.
Collapse
Affiliation(s)
- Rikuan Zheng
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, China
| | - Chong Wang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, China
| | - Ruining Cai
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
| | - Yeqi Shan
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
| | - Chaomin Sun
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
- Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
41
|
Lee W, Lee S, Yoon JK, Lee D, Kim Y, Han YB, Kim R, Moon S, Park YJ, Park K, Cha B, Choi J, Kim J, Ha NY, Kim K, Cho S, Cho NH, Desai TJ, Chung JH, Lee JH, Kim JI. A single-cell atlas of in vitro multiculture systems uncovers the in vivo lineage trajectory and cell state in the human lung. Exp Mol Med 2023; 55:1831-1842. [PMID: 37582976 PMCID: PMC10474282 DOI: 10.1038/s12276-023-01076-z] [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: 03/08/2023] [Revised: 04/14/2023] [Accepted: 04/26/2023] [Indexed: 08/17/2023] Open
Abstract
We present an in-depth single-cell atlas of in vitro multiculture systems on human primary airway epithelium derived from normal and diseased lungs of 27 individual donors. Our large-scale single-cell profiling identified new cell states and differentiation trajectories of rare airway epithelial cell types in human distal lungs. By integrating single-cell datasets of human lung tissues, we discovered immune-primed subsets enriched in lungs and organoids derived from patients with chronic respiratory disease. To demonstrate the full potential of our platform, we further illustrate transcriptomic responses to various respiratory virus infections in vitro airway models. Our work constitutes a single-cell roadmap for the cellular and molecular characteristics of human primary lung cells in vitro and their relevance to human tissues in vivo.
Collapse
Affiliation(s)
- Woochan Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Seyoon Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Jung-Ki Yoon
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Dakyung Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Yuri Kim
- Institute of Endemic Diseases, Medical Research Center, Seoul National University, Seoul, Korea
| | - Yeon Bi Han
- Department of Pathology and Translational Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Rokhyun Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Sungji Moon
- Interdisciplinary Program in Cancer Biology, College of Medicine, Seoul National University, Seoul, Korea
| | - Young Jun Park
- Department of Translational Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Kyunghyuk Park
- Genomic Medicine Institute (GMI), Medical Research Center, Seoul National University, Seoul, Korea
| | - Bukyoung Cha
- Genomic Medicine Institute (GMI), Medical Research Center, Seoul National University, Seoul, Korea
| | - Jaeyong Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Juhyun Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Na-Young Ha
- Institute of Endemic Diseases, Medical Research Center, Seoul National University, Seoul, Korea
| | - Kwhanmien Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Sukki Cho
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Nam-Hyuk Cho
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
- Institute of Endemic Diseases, Medical Research Center, Seoul National University, Seoul, Korea
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea
| | - Tushar J Desai
- Division of Pulmonary, Allergy and Critical Care, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Jin-Haeng Chung
- Department of Pathology and Translational Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
| | - Joo-Hyeon Lee
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK.
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK.
| | - Jong-Il Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.
- Interdisciplinary Program in Cancer Biology, College of Medicine, Seoul National University, Seoul, Korea.
- Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, Korea.
- Cancer Research Institute, Seoul National University, Seoul, Korea.
| |
Collapse
|
42
|
Kim JY, Yang JE, Mitchell JW, English LA, Yang SZ, Tenpas T, Dent EW, Wildonger J, Wright ER. Handling difficult cryo-ET samples: A study with primary neurons from Drosophila melanogaster. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.10.548468. [PMID: 37502991 PMCID: PMC10369871 DOI: 10.1101/2023.07.10.548468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Cellular neurobiology has benefited from recent advances in the field of cryo-electron tomography (cryo-ET). Numerous structural and ultrastructural insights have been obtained from plunge-frozen primary neurons cultured on electron microscopy grids. With most primary neurons been derived from rodent sources, we sought to expand the breadth of sample availability by using primary neurons derived from 3rd instar Drosophila melanogaster larval brains. Ultrastructural abnormalities were encountered while establishing this model system for cryo-ET, which were exemplified by excessive membrane blebbing and cellular fragmentation. To optimize neuronal samples, we integrated substrate selection, micropatterning, montage data collection, and chemical fixation. Efforts to address difficulties in establishing Drosophila neurons for future cryo-ET studies in cellular neurobiology also provided insights that future practitioners can use when attempting to establish other cell-based model systems.
Collapse
Affiliation(s)
- Joseph Y. Kim
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Jie E. Yang
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- Cryo-Electron Microscopy Research Center, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Josephine W. Mitchell
- Department of Chemistry and Biochemistry, Kalamazoo College, Kalamazoo, MI, 49006, USA
| | - Lauren A. English
- Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Sihui Z. Yang
- Department of Biology, Stanford University, Stanford, CA, 94305, USA
| | - Tanner Tenpas
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Erik W. Dent
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Jill Wildonger
- Departments of Pediatrics and Biological Sciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Elizabeth R. Wright
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- Cryo-Electron Microscopy Research Center, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Morgridge Institute for Research, University of Wisconsin-Madison, Madison, WI, 53715, USA
| |
Collapse
|
43
|
Udomkarnjananun S, Iampenkhae K. Pathological Approach to Kidney Allograft Infection. Biomedicines 2023; 11:1902. [PMID: 37509541 PMCID: PMC10377023 DOI: 10.3390/biomedicines11071902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/30/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
Infectious agents can pose a significant challenge in kidney transplantation, as they have the potential to cause direct infections in the transplanted kidney. These infections can lead to a decline in kidney function and reduce the longevity of the transplanted kidney. Common post-transplant allograft infections include bacterial pyelonephritis and the BK virus infection, while adenovirus, JC virus, and cytomegalovirus are less frequent but can also lead to significant allograft dysfunctions. The histopathological features of these infections are characterized by the infiltration of inflammatory cells in the kidney interstitial area and the presence of viral nuclear inclusions or cytopathic changes in the renal tubular epithelial cells. The confirmation of causative organisms can be achieved by immunohistochemical staining or the visualization of viral particles using electron microscopic examination. However, these methods typically require a longer turnaround time and are not readily available in developing countries, unlike standard hematoxylin-eosin staining. Notably, the differential diagnosis of interstitial inflammation in kidney allografts almost always includes T cell-mediated rejection, which has a different treatment approach than allograft infections. The aim of this review was to prompt clinicians to identify diverse pathological alterations as observed in kidney allograft biopsies, thereby facilitating further investigations and the management of suspected kidney allograft infections.
Collapse
Affiliation(s)
- Suwasin Udomkarnjananun
- Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn Univeristy and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok 10330, Thailand
- Excellence Center for Organ Transplantation (ECOT), King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok 10330, Thailand
- Renal Immunology and Transplantation Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Translational Research in Inflammation and Immunology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kroonpong Iampenkhae
- Department of Pathology, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok 10330, Thailand
| |
Collapse
|
44
|
Yang TS, LaDouceur EEB, Baumgartner WA, Marr HS, Karounos M, Robertson J, Whitehurst N, Miller LS, Birkenheuer AJ. A practical protocol to prepare paraffin-embedded whole tick histology sections. Ticks Tick Borne Dis 2023; 14:102162. [PMID: 36965259 PMCID: PMC10652274 DOI: 10.1016/j.ttbdis.2023.102162] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 02/05/2023] [Accepted: 02/26/2023] [Indexed: 03/27/2023]
Abstract
Ticks are important ectoparasites that are capable of transmitting multiple classes of pathogens and are currently linked with many emerging tick-borne diseases worldwide. With increasing occurrences of tick-borne diseases in both humans and veterinary species, there is a continuous need to further our understanding of ticks and the pathogens they transmit. Whole tick histology provides a full scope of the tick internal anatomy, allowing researchers to examine multiple organs of interest in a single section. This is in contrast to other techniques that are more commonly utilized in tick-borne disease research, such as electron microscopy and light microscopy of individual organs. There is a lack of literature describing a practical technique to process whole tick histologic sections. Therefore, the current study aims to provide researchers with a workable protocol to prepare high quality paraffin-embedded whole tick histology sections. Amblyomma americanum adults were used as an example species for this study. After a series of pilot experiments using a combination of various fixatives, softening agents and processing techniques, we elected to compare two common fixatives, 10% neutral-buffered formalin (NBF) and Bouin's solution for whole ticks. Equal numbers of A. americanum unfed adults (n = 10/fixative) were processed identically and their whole tick histology coronal sections were individually scored. Higher scores were assigned to whole tick sections that contained more internal organs that are crucial for tick-borne disease research (e.g. salivary glands and midgut), high integrity of tissues and exoskeleton on the section, and good fixation and staining quality of the tissues. The mean total scores for Bouin's-fixed ticks were significantly higher compared to NBF-fixed ticks (p = 0.001). To further assess our preferred technique, we also demonstrated the feasibility of producing high quality whole tick sections for three other common tick species of medical importance (Rhipicephalus sanguineus, Ixodes scapularis, and Dermacentor variabilis) using Bouin's solution. While this technique may require further optimization for other tick species, we described a feasible protocol that uses commonly available tools, reagents and standard histologic equipment. This should allow any investigator to easily make adjustments to this protocol as needed based on their experimental goals.
Collapse
Affiliation(s)
- Tzushan S Yang
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
| | - Elise E B LaDouceur
- Joint Pathology Center, Veterinary Pathology Services, Silver Spring, Maryland, USA
| | - Wes A Baumgartner
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana, IL 61802, USA
| | - Henry S Marr
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
| | - Michael Karounos
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
| | - James Robertson
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA; Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
| | - Nathan Whitehurst
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
| | - Laura S Miller
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA
| | - Adam J Birkenheuer
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA.
| |
Collapse
|
45
|
Yadav S, Waldeck-Weiermair M, Spyropoulos F, Bronson R, Pandey AK, Das AA, Sisti AC, Covington TA, Thulabandu V, Caplan S, Chutkow W, Steinhorn B, Michel T. Sensory ataxia and cardiac hypertrophy caused by neurovascular oxidative stress in chemogenetic transgenic mouse lines. Nat Commun 2023; 14:3094. [PMID: 37248315 PMCID: PMC10227029 DOI: 10.1038/s41467-023-38961-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 05/24/2023] [Indexed: 05/31/2023] Open
Abstract
Oxidative stress is associated with cardiovascular and neurodegenerative diseases. Here we report studies of neurovascular oxidative stress in chemogenetic transgenic mouse lines expressing yeast D-amino acid oxidase (DAAO) in neurons and vascular endothelium. When these transgenic mice are fed D-amino acids, DAAO generates hydrogen peroxide in target tissues. DAAO-TGCdh5 transgenic mice express DAAO under control of the putatively endothelial-specific Cdh5 promoter. When we provide these mice with D-alanine, they rapidly develop sensory ataxia caused by oxidative stress and mitochondrial dysfunction in neurons within dorsal root ganglia and nodose ganglia innervating the heart. DAAO-TGCdh5 mice also develop cardiac hypertrophy after chronic chemogenetic oxidative stress. This combination of ataxia, mitochondrial dysfunction, and cardiac hypertrophy is similar to findings in patients with Friedreich's ataxia. Our observations indicate that neurovascular oxidative stress is sufficient to cause sensory ataxia and cardiac hypertrophy. Studies of DAAO-TGCdh5 mice could provide mechanistic insights into Friedreich's ataxia.
Collapse
Affiliation(s)
- Shambhu Yadav
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Markus Waldeck-Weiermair
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Fotios Spyropoulos
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Roderick Bronson
- Department of Immunology, Harvard Medical School, Boston, MA, 02115, USA
| | - Arvind K Pandey
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Apabrita Ayan Das
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Alexander C Sisti
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Taylor A Covington
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Venkata Thulabandu
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Shari Caplan
- Novartis Institutes for Biomedical Research, Cambridge, MA, 02139, USA
| | - William Chutkow
- Novartis Institutes for Biomedical Research, Cambridge, MA, 02139, USA
| | - Benjamin Steinhorn
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Thomas Michel
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA.
| |
Collapse
|
46
|
Abdullah NA, Mahmoud HE, El-Nikhely NA, Hussein AA, El-Khordagui LK. Carbon dots labeled Lactiplantibacillus plantarum: a fluorescent multifunctional biocarrier for anticancer drug delivery. Front Bioeng Biotechnol 2023; 11:1166094. [PMID: 37304143 PMCID: PMC10248154 DOI: 10.3389/fbioe.2023.1166094] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 05/15/2023] [Indexed: 06/13/2023] Open
Abstract
A carbon dots (CDs)-biolabeled heat-inactivated Lactiplantibacillus plantarum (HILP) hybrid was investigated as a multifunctional probiotic drug carrier with bioimaging properties using prodigiosin (PG) as anticancer agent. HILP, CDs and PG were prepared and characterized using standard methods. CDs-labeled HILP (CDs/HILP) and PG loaded CDs/HILP were characterized by transmission electron microscopy (TEM), laser scanning confocal microscopy (LSCM) and for entrapment efficiency (EE%) of CDs and PG, respectively. PG-CDs/HILP was examined for stability and PG release. the anticancer activity of PG-CDs/HILP was assessed using different methods. CDs imparted green fluorescence to HILP cells and induced their aggregation. HILP internalized CDs via membrane proteins, forming a biostructure with retained fluorescence in PBS for 3 months at 4°C. Loading PG into CDs/HILP generated a stable green/red bicolor fluorescent combination permitting tracking of both drug carrier and cargo. Cytotoxicity assay using Caco-2 and A549 cells revealed enhanced PG activity by CDs/HILP. LCSM imaging of PG-CDs/HILP-treated Caco-2 cells demonstrated improved cytoplasmic and nuclear distribution of PG and nuclear delivery of CDs. CDs/HILP promoted PG-induced late apoptosis of Caco-2 cells and reduced their migratory ability as affirmed by flow cytometry and scratch assay, respectively. Molecular docking indicated PG interaction with mitogenic molecules involved in cell proliferation and growth regulation. Thus, CDs/HILP offers great promise as an innovative multifunctional nanobiotechnological biocarrier for anticancer drug delivery. This hybrid delivery vehicle merges the physiological activity, cytocompatibility, biotargetability and sustainability of probiotics and the bioimaging and therapeutic potential of CDs.
Collapse
Affiliation(s)
- Noor A. Abdullah
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Hoda E. Mahmoud
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Nefertiti A. El-Nikhely
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Ahmed A. Hussein
- Department of Biotechnology, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
| | - Labiba K. El-Khordagui
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| |
Collapse
|
47
|
Zare M, Farhadi A, Zare F, Dehbidi GR, Zarghampoor F, Ahmadi MKB, Behbahani AB. Genetically engineered E. coli invade epithelial cells and transfer their genetic cargo into the cells: an approach to a gene delivery system. Biotechnol Lett 2023:10.1007/s10529-023-03387-7. [PMID: 37166604 DOI: 10.1007/s10529-023-03387-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/12/2023]
Abstract
PURPOSE Despite advances in gene therapy, the lack of safe and efficient gene delivery systems limited the clinical effectiveness of gene therapy. Due to the inherent potential of bacteria, they can be considered as a good option for the gene transfer system. This study aimed to create a genetically engineered bacterium capable of entering epithelial cells and transferring its genetic cargo to the cell's cytoplasm, eventually expressing the gene of interest in the cell. METHODS The invasin (inv) gene from Yersinia pseudotuberculosis and the listeriolysin (hlyA) gene from Listeria monocytogenes were isolated by PCR assay and inserted into a pACYCDuet-1 vector. The recombinant plasmid was then transformed into E. coli strain BL21. Subsequently, pEGFP-C1 plasmids containing a CMV promoter were transformed into the engineered bacteria. Finally, the engineered bacteria containing the reporter genes were incubated with the HeLa and LNCaP cell lines. Fluorescence microscopy, flow cytometry, and TEM were used to monitor bacterial entry into the cells and gene expression. We used native E. coli strain BL21 as a control. RESULTS A fluorescence microscope showed that, in contrast to the control group, the manipulated E. coli were able to penetrate the cells and transport the plasmid pEGFP-C1 to the target cells. Flow cytometry also showed fluorescence intensity of 54.7% in HeLa cells and 71% in LNCaP cells, respectively. In addition, electron micrographs revealed the presence of bacteria in the cell endosomes and in the cytoplasm of the cells. CONCLUSION This study shows that genetically engineered E. coli can enter cells, transport cargo into cells, and induce gene expression in the target cell. In addition, flow cytometry shows that the gene transfer efficiency was sufficient for protein expression.
Collapse
Affiliation(s)
- Maryam Zare
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Division of Medical Biotechnology, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Farhadi
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Division of Medical Biotechnology, Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farahnaz Zare
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamreza Rafiei Dehbidi
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farzaneh Zarghampoor
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Karimi Baba Ahmadi
- Department of Advanced Medical Technology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Abbas Behzad Behbahani
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
| |
Collapse
|
48
|
Pant R, Kabeer SW, Sharma S, Kumar V, Patra D, Pal D, Tikoo K. Pharmacological inhibition of DNMT1 restores macrophage autophagy and M2 polarization in western diet-induced Nonalcoholic fatty liver disease. J Biol Chem 2023:104779. [PMID: 37142224 DOI: 10.1016/j.jbc.2023.104779] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 04/16/2023] [Accepted: 04/17/2023] [Indexed: 05/06/2023] Open
Abstract
Non-Alcoholic Fatty Liver Disease (NAFLD) is associated with an increased ratio of classically activated M1 macrophages/Kupffer cells to alternatively activated M2 macrophages, which plays an imperative role in the development & progression of NAFLD. However, little is known about the precise mechanism behind macrophage polarization shift. Here, we provide evidence regarding the relationship between the polarization shift in Kupffer cells and autophagy resulting from lipid exposure. High-fat and High-fructose diet supplementation for 10 weeks significantly increased the abundance of Kupffer cells with an M1-predominant phenotype in mice. Interestingly, at the molecular level, we also observed a concomitant increase in expression of DNA methyltransferases DNMT1 and reduced autophagy in the NAFLD mice. We also observed hypermethylation at the promotor regions of autophagy genes (LC3B, ATG-5, and ATG-7). Furthermore, the pharmacological inhibition of DNMT1 by using DNA hypomethylating agents (Azacitidine and Zebularine) restored Kupffer cell autophagy, M1/M2 polarization and therefore prevented the progression of NAFLD. We report the presence of a link between epigenetic regulation of autophagy gene and macrophage polarization switch. We provide the evidence that epigenetic modulators restore the lipid-induced imbalance in macrophage polarization, therefore, preventing the development & progression of NAFLD.
Collapse
Affiliation(s)
- Rajat Pant
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology National Institute of Pharmaceutical Education and Research, S.A.S Nagar (Mohali), Punjab- 160062, India
| | - Shaheen Wasil Kabeer
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology National Institute of Pharmaceutical Education and Research, S.A.S Nagar (Mohali), Punjab- 160062, India
| | - Shivam Sharma
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology National Institute of Pharmaceutical Education and Research, S.A.S Nagar (Mohali), Punjab- 160062, India
| | - Vinod Kumar
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology National Institute of Pharmaceutical Education and Research, S.A.S Nagar (Mohali), Punjab- 160062, India
| | - Debarun Patra
- Department for Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar -140001, Punjab, India
| | - Durba Pal
- Department for Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar -140001, Punjab, India
| | - Kulbhushan Tikoo
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology National Institute of Pharmaceutical Education and Research, S.A.S Nagar (Mohali), Punjab- 160062, India.
| |
Collapse
|
49
|
Mrazova K, Bacovsky J, Sedrlova Z, Slaninova E, Obruca S, Fritz I, Krzyzanek V. Urany-Less Low Voltage Transmission Electron Microscopy: A Powerful Tool for Ultrastructural Studying of Cyanobacterial Cells. Microorganisms 2023; 11:888. [PMID: 37110311 PMCID: PMC10146862 DOI: 10.3390/microorganisms11040888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
Sample preparation protocols for conventional high voltage transmission electron microscopy (TEM) heavily rely on the usage of staining agents containing various heavy metals, most commonly uranyl acetate and lead citrate. However high toxicity, rising legal regulations, and problematic waste disposal of uranyl acetate have increased calls for the reduction or even complete replacement of this staining agent. One of the strategies for uranyless imaging is the employment of low-voltage transmission electron microscopy. To investigate the influence of different imaging and staining strategies on the final image of cyanobacterial cells, samples stained by uranyl acetate with lead citrate, as well as unstained samples, were observed using TEM and accelerating voltages of 200 kV or 25 kV. Moreover, to examine the possibilities of reducing chromatic aberration, which often causes issues when imaging using electrons of lower energies, samples were also imaged using a scanning transmission electron microscopy at 15 kV accelerating voltages. The results of this study demonstrate that low-voltage electron microscopy offers great potential for uranyless electron microscopy.
Collapse
Affiliation(s)
- Katerina Mrazova
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic;
| | - Jaromir Bacovsky
- Delong Instruments a.s., Palackeho Trida 3019/153 b, 612 00 Brno, Czech Republic;
| | - Zuzana Sedrlova
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (Z.S.); (E.S.); (S.O.)
| | - Eva Slaninova
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (Z.S.); (E.S.); (S.O.)
| | - Stanislav Obruca
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (Z.S.); (E.S.); (S.O.)
| | - Ines Fritz
- Institute of Environmental Biotechnology, Department of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences, Konrad-Lorenz-Strase 20, 3430 Tulln an der Donau, Austria;
| | - Vladislav Krzyzanek
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic;
| |
Collapse
|
50
|
Ibrahim MA, Mohamed SR, Dkhil MA, Thagfan FA, Abdel-Gaber R, Soliman D. The effect of Moringa oleifera leaf extracts against urethane-induced lung cancer in rat model. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:37280-37294. [PMID: 36567388 DOI: 10.1007/s11356-022-24813-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/13/2022] [Indexed: 06/09/2023]
Abstract
Lung cancer is one of the most common malignancies in the world, and chemotherapy can have unfavorable side effects. The aim of the present study is to evaluate the therapeutic anticancer role of Moringa oleifera leaf extracts (MLE) in urethane-induced lung cancer in adult male albino rats as compared to standard chemotherapy. Rats were categorized into four groups (10 rats/group), including negative control rats, urethane lung cancer model rats, MLE-treated lung cancer rats, and cisplatin-treated rats. Estimation of lung index, some biochemical markers of oxidative stress, quantitative real-time polymerase chain reaction (qRT-PCR), and histopathology and transmission electron microscopy were performed. The lung index was significantly increased about one-fold in urethane lung cancer model rats, but it decreased after MLE treatment. Also, MLE was able to improve the induced changes in glutathione, superoxide dismutase, and malondialdehyde concentration to be 3.8 ± 0.4 mg/g, 900.6 ± 58 U/g, and 172 ± 24 nmol/g, respectively. Additionally, after MLE treatment, the expression of EGFR-mRNA increased by about 50%. Our light and electron microscopic examination revealed that urethane group showed abnormally distributed excessive collagen fibers and the development of papillary adenocarcinoma from hyperplastic Clara cells in the lumen of terminal bronchiole with bronchiolar wall thickening, alveolar collapse, and inflammation. MLE group has moderate amount of collagen fiber and absence of tumor mass and provided more or less restoration of normal lung histology. Moreover, MLE was able to ameliorate the induced changes in mucin and PCNA positive cells in the lung by 10.8 ± 2.3%. Collectively, the current study showed that MLE could be used as anticancer agents alleviating changes associated with lung cancer in a urethane-induced lung cancer bearing rats thereby representing alternative options to toxic chemotherapy.
Collapse
Affiliation(s)
- Mona A Ibrahim
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo, Egypt.
| | - Sherif R Mohamed
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Mohamed A Dkhil
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Felwa A Thagfan
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Rewaida Abdel-Gaber
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Doaa Soliman
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo, Egypt
| |
Collapse
|