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Zhu D, Li Y, Zhang J, Chen Y, Song X, Chen W, Wu S, Hou L. Enhanced neuroprotective activity of ophthalmic delivered nerve growth factor conjugated with cell penetrating peptide against optic nerve injury. J Drug Target 2024; 32:93-99. [PMID: 38105766 DOI: 10.1080/1061186x.2023.2295220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
Aims: Nerve growth factor is a well characterised neurotrophic factor that play a critical role in the survival, growth and differentiation of neurons both in central and peripheral nervous system. However, it is difficult for the conventional exogenous nerve growth factor administration delivery to the central nervous system due to the biological barrier in human bodies.Results: We validated a series of cell penetrating peptides and found that L-PenetraMax significantly enhanced the efficiency of recombinant human nerve growth factor entry into the rat retina. In the optic nerve crush mice model, eye drop administration of recombinant human nerve growth factor alone promoted retinal ganglion cell survival and axon regeneration at high dose, while the combination of recombinant human nerve growth factor with L-PenetraMax significantly enhanced the neuroprotective efficacy at lower dose, thus potentially enhancing the availability of recombinant human nerve growth factor eye drops in patients with optic neuropathy.Conclusions: This study provides the evidence that the noncovalent coadministration of recombinant human nerve growth factor with L-PenetraMax could be a potent strategy for the non-invasive and sustained ocular delivery of therapeutic proteins for improving the optic nerve injury.
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Affiliation(s)
- Danni Zhu
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
| | - Yao Li
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
| | - Jinlong Zhang
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
| | - Yi Chen
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
| | - Xiaohong Song
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
| | - Wei Chen
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
| | - Shipo Wu
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
| | - Lihua Hou
- Institute of Biotechnology, Academy of Military Sciences, Beijing, China
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Li W, Lyu W, Liu S, Ruan F, Zhang X. GLP1R boosts survival, migration and invasion of endometrial cancer cells and protects against ferroptotic cell death. J OBSTET GYNAECOL 2024; 44:2301324. [PMID: 38269495 DOI: 10.1080/01443615.2023.2301324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 12/29/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND Despite the strong evidence concerning carcinogenic roles of glucagon-like peptide 1 receptor (GLP1R), the role of this gene in endometrial cancer (EC) remains elusive. This study investigated the properties of GLP1R on EC in vitro. METHODS The expression of GLP1R in EC was detected by RT-qPCR, immunohistochemistry, and western blotting. Cell viability, cell cycle, apoptosis, migration, invasion and ferroptosis were assessed through CCK-8, flow cytometry, wound healing, transwell, DCFH-DA and western blotting, respectively. RESULTS We found that GLP1R was up-regulated in EC than normal specimens. It had the highest expression in AN3CA cells. Cell viability, migration and invasion were significantly reduced, while cell cycle arrest and apoptosis were induced following GLP1R knockdown. The malignant biological behaviours of AN3CA cells were investigated when treated with exendin-4 (GLP1R agonist). Moreover, GLP1R lowered intracellular ROS level and expression of SLC7A11, and FTH1, but mitigated GPX4 expression in AN3CA cells. CONCLUSION In a word, GLP1R was up-regulated in EC and its up-regulation facilitated the proliferative and metastatic potentials, and protected cells from ferroptosis, thereby accelerating EC progression. These data emphasised the potency of GLP1R as a therapeutic agent against EC.
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Affiliation(s)
- Wu Li
- Department of Gynecology, Women's Hospital School of Medicine Zhejiang University, Hangzhou City, China
| | - Wen Lyu
- Department of Gynecology, Tongde Hospital of Zhejiang Province, Hangzhou City, China
| | - Songjun Liu
- Department of Gynecology, Tongde Hospital of Zhejiang Province, Hangzhou City, China
| | - Fan Ruan
- Department of Gynecology, Tongde Hospital of Zhejiang Province, Hangzhou City, China
| | - Xinmei Zhang
- Department of Gynecology, Women's Hospital School of Medicine Zhejiang University, Hangzhou City, China
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Scaviner J, Bagacean C, Christian B, Renaudineau Y, Mignen O, Abdoul-Azize S. Blocking Orai1 constitutive activity inhibits B-cell cancer migration and synergistically acts with drugs to reduce B-CLL cell survival. Eur J Pharmacol 2024; 971:176515. [PMID: 38547958 DOI: 10.1016/j.ejphar.2024.176515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/10/2024] [Accepted: 03/18/2024] [Indexed: 04/20/2024]
Abstract
Orai1 channel capacity to control store-operated Ca2+ entry (SOCE) and B-cell functions is poorly understood and more specifically in B-cell cancers, including human lymphoma and leukemia. As compared to normal B-cells, Orai1 is overexpressed in B-chronic lymphocytic leukemia (B-CLL) and contributes in resting B-CLL to mediate an elevated basal Ca2+ level through a constitutive Ca2+ entry, and in BCR-activated B-cell to regulate the Ca2+ signaling response. Such observations were confirmed in human B-cell lymphoma and leukemia lines, including RAMOS, JOK-1, MEC-1 and JVM-3 cells. Next, the use of pharmacological Orai1 inhibitors (GSK-7975 A and Synta66) blocks constitutive Ca2+ entry and in turn affects B-cell cancer (primary and cell lines) survival and migration, controls cell cycle, and induces apoptosis through a mitochondrial and caspase-3 independent pathway. Finally, the added value of Orai1 inhibitors in combination with B-CLL drugs (ibrutinib, idelalisib, rituximab, and venetoclax) on B-CLL survival was tested, showing an additive/synergistic effect including in the B-cell cancer lines. To conclude, this study highlights the pathophysiological role of the Ca2+ channel Orai1 in B-cell cancers, and pave the way for the use of ORAI1 modulators as a plausible therapeutic strategy.
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Affiliation(s)
- Julien Scaviner
- INSERM UMR1227, Université de Bretagne Occidentale, F-29200 Brest, France
| | - Cristina Bagacean
- INSERM UMR1227, Université de Bretagne Occidentale, F-29200 Brest, France
| | - Berthou Christian
- INSERM UMR1227, Université de Bretagne Occidentale, F-29200 Brest, France
| | - Yves Renaudineau
- INSERM UMR1227, Université de Bretagne Occidentale, F-29200 Brest, France
| | - Olivier Mignen
- INSERM UMR1227, Université de Bretagne Occidentale, F-29200 Brest, France
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Padrona M, Maroquenne M, El-Hafci H, Rossiaud L, Petite H, Potier E. Glucose depletion decreases cell viability without triggering degenerative changes in a physiological nucleus pulposus explant model. J Orthop Res 2024; 42:1111-1121. [PMID: 37975418 DOI: 10.1002/jor.25742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/30/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023]
Abstract
Although the etiology of intervertebral disc degeneration is still unresolved, the nutrient paucity resulting from its avascular nature is suspected of triggering degenerative processes in its core: the nucleus pulposus (NP). While severe hypoxia has no significant effects on NP cells, the impact of glucose depletion, such as found in degenerated discs (0.2-1 mM), is still uncertain. Using a pertinent ex-vivo model representative of the unique disc microenvironment, the present study aimed, therefore, at determining the effects of "degenerated" (0.3 mM) glucose levels on bovine NP explant homeostasis. The effects of glucose depletion were evaluated on NP cell viability, apoptosis, phenotype, metabolism, senescence, extracellular matrix anabolism and catabolism, and inflammatory mediator production using fluorescent staining, RT-qPCR, (immuno)histology, ELISA, biochemical, and enzymatic assays. Compared to the "healthy" (2 mM) glucose condition, exposure to the degenerated glucose condition led to a rapid and extensive decrease in NP cell viability associated with increased apoptosis. Although the aggrecan and collagen-II gene expression was also downregulated, NP cell phenotype, and senescence, matrix catabolism, and inflammatory mediator production were not, or only slightly, affected by glucose depletion. The present study provided evidence for glucose depletion as an essential player in NP cell viability but also suggested that other microenvironment factor(s) may be involved in triggering the typical shift of NP cell phenotype observed during disc degeneration. The present study contributes new information for better understanding disc degeneration at the cellular-molecular levels and thus helps to develop relevant therapeutical strategies to counteract it.
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Affiliation(s)
| | | | - Hanane El-Hafci
- Université Paris Cité, CNRS, INSERM, ENVA, B3OA, Paris, France
| | | | - Hervé Petite
- Université Paris Cité, CNRS, INSERM, ENVA, B3OA, Paris, France
| | - Esther Potier
- Université Paris Cité, CNRS, INSERM, ENVA, B3OA, Paris, France
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Suthar JK, Vaidya A, Ravindran S. Size, Surface Properties, and Ion Release of Zinc Oxide Nanoparticles: Effects on Cytotoxicity, Dopaminergic Gene Expression, and Acetylcholinesterase Inhibition in Neuronal PC-12 Cells. Biol Trace Elem Res 2024; 202:2254-2271. [PMID: 37713055 DOI: 10.1007/s12011-023-03832-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 08/25/2023] [Indexed: 09/16/2023]
Abstract
The extensive applications of zinc oxide nanoparticles (ZnO NPs) have resulted in a substantial risk of human exposure. However, the knowledge of the toxicity of these NPs in the nervous system is still limited. A comparative analysis of ZnO NPs of various sizes and NPs of the same size, with and without surface coating, and the potential role of released zinc ions is yet to be thoroughly explored. As a result, we have studied the cellular toxicity of two different-sized ZnO NPs, ZnO-22 (22 nm) and ZnO-43 (43 nm), and NPs with similar size but with polyvinylpyrrolidone coating (ZnO-P, 45 nm). The findings from our study suggested a time-, size-, and surface coating-dependent cytotoxicity in PC-12 cells at a concentration ≥ 10 μg/ml. ZnO NP treatment significantly elevated reactive oxygen and reactive nitrogen species, thereby increasing oxidative stress. The exposure of ZnO-22 and ZnO-43 significantly upregulated the expression of monoamine oxidase-A and downregulated the α-synuclein gene expression associated with the dopaminergic system. The interaction of NPs enzymes in the nervous system is also hazardous. Therefore, the inhibition activity of acetylcholinesterase enzyme was also studied for its interaction with these NPs, and the results indicated a dose-dependent inhibition of enzyme activity. Particle size, coating, and cellular interactions modulate ZnO NP's cytotoxicity; smaller sizes enhance cellular uptake and reactivity, while coating reduces cytotoxicity by limiting direct cell contact and potentially mitigating oxidative stress. Furthermore, the study of released zinc ions from the NPs suggested no significant contribution to the observed cytotoxicity compared to the NPs.
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Affiliation(s)
- Jitendra Kumar Suthar
- Symbiosis School of Biological Sciences, Faculty of Medical and Health Sciences, Symbiosis International (Deemed) University, Pune, India
| | - Anuradha Vaidya
- Symbiosis Centre for Stem Cell Research, Symbiosis School of Biological Sciences, Symbiosis International (Deemed) University, Pune, India
| | - Selvan Ravindran
- Symbiosis School of Biological Sciences, Faculty of Medical and Health Sciences, Symbiosis International (Deemed) University, Pune, India.
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Lv Y, Feng Z, Liu X, Zhang J, Yao C. The Enhancement of Tumor Ablation Effect by the Combination of High-Frequency and Low-Voltage Bipolar Electroporation Pulses. IEEE Trans Biomed Eng 2024; 71:1577-1586. [PMID: 38113160 DOI: 10.1109/tbme.2023.3344153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The H-FIRE (high-frequency irreversible electroporation) protocol employs high-frequency bipolar pulses (HFBPs) with a width of ∼1 µs for tumor ablation with slight muscle contraction. However, H-FIRE pulses need a higher electric field to generate a sufficient ablation effect, which may cause undesirable thermal damage. OBJECTIVE Recently, combining short high-voltage IRE monopolar pulses with long low-voltage IRE monopolar pulses was shown to enlarge the ablation region. This finding indicates that combining HFBPs with low-voltage bipolar pulses (LVBPs), which are called composited bipolar pulses (CBPs), may enhance the ablation effect. METHODS This study designed a pulse generator by modifying a full-bridge inverter. The cell suspension and 3D tumor mimic experiments (U251 cells) were performed to examine the enhancement of the ablation effect. RESULTS The generator outputs HFBPs with 0-±2.5 kV and LVBPs with 0-±0.3 kV in one period. The pulse parameters are adjustable by programming on a human-computer interface. The cell suspension experiments showed that CBPs could enhance cytotoxicity, as compared to HFBPs with no cell-killing effect. Even at lower electric energy, the cell viability by CBPs was significantly lower than that of the HFBPs protocol. The ablation experiments on the 3D tumor mimic showed that the CBPs could create a larger connected ablation area. In contrast, the HFBPs protocol with a similar dose generated a nonconnected ablation area. CONCLUSION Results indicate that the CBPs protocol can enhance the ablation effect of HFBPs protocol. SIGNIFICANCE This proposed generator that uses the CBPs principle may be a useful tool for tumor ablation.
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Raboni S, Faggiano S, Bettati S, Mozzarelli A. Methionine gamma lyase: Structure-activity relationships and therapeutic applications. Biochim Biophys Acta Proteins Proteom 2024; 1872:140991. [PMID: 38147934 DOI: 10.1016/j.bbapap.2023.140991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 12/28/2023]
Abstract
Methionine gamma lyase (MGL) is a bacterial and plant enzyme that catalyzes the conversion of methionine in methanthiol, 2-oxobutanoate and ammonia. The enzyme belongs to fold type I of the pyridoxal 5'-dependent family. The catalytic mechanism and the structure of wild type MGL and variants were determined in the presence of the natural substrate as well as of many sulfur-containing derivatives. Structure-function relationship studies were pivotal for MGL exploitation in the treatment of cancer, bacterial infections, and other diseases. MGL administration to cancer cells leads to methionine starvation, thus decreasing cells viability and increasing their vulnerability towards other drugs. In antibiotic therapy, MGL acts by transforming prodrugs in powerful drugs. Numerous strategies have been pursued for the delivering of MGL in vivo to prolong its bioavailability and decrease its immunogenicity. These include conjugation with polyethylene glycol and encapsulation in synthetic or natural vesicles, eventually decorated with tumor targeting molecules, such as the natural phytoestrogens daidzein and genistein. The scientific achievements in studying MGL structure, function and perspective therapeutic applications came from the efforts of many talented scientists, among which late Tatyana Demidkina to whom we dedicate this review.
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Affiliation(s)
- Samanta Raboni
- Department of Food and Drug, University of Parma, Parma, Italy; Institute of Biophysics, National Research Council, Pisa, Italy.
| | - Serena Faggiano
- Department of Food and Drug, University of Parma, Parma, Italy; Institute of Biophysics, National Research Council, Pisa, Italy
| | - Stefano Bettati
- Institute of Biophysics, National Research Council, Pisa, Italy; National Institute of Biostructures and Biosystems (INBB), Rome, Italy; Department of Medicine, University of Parma, Parma, Italy
| | - Andrea Mozzarelli
- Department of Food and Drug, University of Parma, Parma, Italy; Institute of Biophysics, National Research Council, Pisa, Italy
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Martellucci S, Flütsch A, Carter M, Norimoto M, Pizzo D, Mantuano E, Sadri M, Wang Z, Chillin-Fuentes D, Rosenthal SB, Azmoon P, Gonias SL, Campana WM. Axon-derived PACSIN1 binds to the Schwann cell survival receptor, LRP1, and transactivates TrkC to promote gliatrophic activities. Glia 2024; 72:916-937. [PMID: 38372375 DOI: 10.1002/glia.24510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 01/12/2024] [Accepted: 01/19/2024] [Indexed: 02/20/2024]
Abstract
Schwann cells (SCs) undergo phenotypic transformation and then orchestrate nerve repair following PNS injury. The ligands and receptors that activate and sustain SC transformation remain incompletely understood. Proteins released by injured axons represent important candidates for activating the SC Repair Program. The low-density lipoprotein receptor-related protein-1 (LRP1) is acutely up-regulated in SCs in response to injury, activating c-Jun, and promoting SC survival. To identify novel LRP1 ligands released in PNS injury, we applied a discovery-based approach in which extracellular proteins in the injured nerve were captured using Fc-fusion proteins containing the ligand-binding motifs of LRP1 (CCR2 and CCR4). An intracellular neuron-specific protein, Protein Kinase C and Casein Kinase Substrate in Neurons (PACSIN1) was identified and validated as an LRP1 ligand. Recombinant PACSIN1 activated c-Jun and ERK1/2 in cultured SCs. Silencing Lrp1 or inhibiting the LRP1 cell-signaling co-receptor, the NMDA-R, blocked the effects of PACSIN1 on c-Jun and ERK1/2 phosphorylation. Intraneural injection of PACSIN1 into crush-injured sciatic nerves activated c-Jun in wild-type mice, but not in mice in which Lrp1 is conditionally deleted in SCs. Transcriptome profiling of SCs revealed that PACSIN1 mediates gene expression events consistent with transformation to the repair phenotype. PACSIN1 promoted SC migration and viability following the TNFα challenge. When Src family kinases were pharmacologically inhibited or the receptor tyrosine kinase, TrkC, was genetically silenced or pharmacologically inhibited, PACSIN1 failed to induce cell signaling and prevent SC death. Collectively, these studies demonstrate that PACSIN1 is a novel axon-derived LRP1 ligand that activates SC repair signaling by transactivating TrkC.
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Affiliation(s)
- Stefano Martellucci
- Department of Anesthesiology, University of California San Diego, La Jolla, California, USA
| | - Andreas Flütsch
- Department of Anesthesiology, University of California San Diego, La Jolla, California, USA
| | - Mark Carter
- Department of Anesthesiology, University of California San Diego, La Jolla, California, USA
| | - Masaki Norimoto
- Department of Anesthesiology, University of California San Diego, La Jolla, California, USA
| | - Donald Pizzo
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Elisabetta Mantuano
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Mahrou Sadri
- Department of Anesthesiology, University of California San Diego, La Jolla, California, USA
| | - Zixuan Wang
- Department of Anesthesiology, University of California San Diego, La Jolla, California, USA
| | - Daisy Chillin-Fuentes
- Center for Computational Biology & Bioinformatics, Altman Clinical & Translational Research Institute, University of California San Diego, La Jolla, California, USA
| | - Sara Brin Rosenthal
- Center for Computational Biology & Bioinformatics, Altman Clinical & Translational Research Institute, University of California San Diego, La Jolla, California, USA
| | - Pardis Azmoon
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Steven L Gonias
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Wendy M Campana
- Department of Anesthesiology, University of California San Diego, La Jolla, California, USA
- Program in Neurosciences, University of California San Diego, La Jolla, California, USA
- Division of Research, San Diego VA Health Care System, San Diego, California, USA
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Kigin M, Schmidt G, Revis B, Vigmostad S, Sales CS. Using a Cone-Shaped Glass Funnel Adapter Reduces Endothelial Cell Loss Caused by Preloading Descemet Membrane Endothelial Keratoplasty Tissue. Cornea 2024; 43:603-608. [PMID: 37713668 DOI: 10.1097/ico.0000000000003392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/11/2023] [Indexed: 09/17/2023]
Abstract
PURPOSE The aims of this study were (1) to compare "front" and "rear" methods for loading Descemet membrane endothelial keratoplasty (DMEK) tissue into both micro-Jones and standard-Jones tubes and (2) to evaluate the efficacy of a cone-shaped glass funnel adapter designed to make loading DMEK tissue safer for corneal endothelial cells. METHODS The corneal endothelium was stained with 0.06% trypan blue to confirm equivalence between mate corneas. The tissues were then processed using the Iowa Lions Eye Bank standard DMEK protocol. In comparison 1, one mate was loaded into the rear of a micro-Jones or standard-Jones tube and the other was loaded into the front of the same tube. In comparison 2, one mate was loaded into the front of the micro-Jones tube and the other was loaded through the cone-shaped funnel adapter into the rear. All tissues were ejected through the front of the modified Jones tubes and assessed for endothelial cell loss (ECL) with calcein AM staining, FIJI, and Trainable Weka Segmentation; scroll widths were measured digitally. RESULTS There were no statistically significant differences in ECL between front and rear loading [micro (N = 6 pairs): front 15.74% vs. rear 17.95%; standard (N = 6 pairs): front 19.58% vs. rear 19.17%; all P > 0.05]. DMEK scrolls loaded with the funnel adapter exhibited lower ECL compared with scrolls loaded through the front [micro (N = 8 pairs): front 13.53% vs. loading funnel 2.40%; P < 0.001]. Loading with the adapter was not faster (front 6.66 seconds vs. loading funnel 5.52 seconds; P = 0.24). CONCLUSIONS Using a cone-shaped DMEK loading funnel may reduce ECL sustained during preloading.
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Affiliation(s)
- Matthew Kigin
- Iowa Lions Eye Bank, Coralville, IA
- Iowa Eye Device Lab, Iowa City, IA
- Carver College of Medicine, University of Iowa, Iowa City, IA
| | | | - Benjamin Revis
- Iowa Eye Device Lab, Iowa City, IA
- Department of Chemistry, University of Iowa, Iowa City, IA
| | - Sarah Vigmostad
- College of Engineering, University of Iowa, Iowa City, IA
- Iowa Institute of Hydraulic Research, Iowa City, IA; and
| | - Christopher S Sales
- Iowa Lions Eye Bank, Coralville, IA
- Iowa Eye Device Lab, Iowa City, IA
- Carver College of Medicine, University of Iowa, Iowa City, IA
- Department of Ophthalmology and Visual Science, University of Iowa, Iowa City, IA
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Cao P, Li Q, Zou D, Wang L, Wang Z. Identification of crucial ubiquitin-associated genes for predicting the effects of immunotherapy and therapeutic agents in colorectal cancer. Gene 2024; 904:148215. [PMID: 38307218 DOI: 10.1016/j.gene.2024.148215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/04/2024]
Abstract
BACKGROUND A growing body of research indicates that colorectal cancer (CRC) is significantly influenced by the ubiquitin-proteasome system. Nevertheless, reliable immune landscapes and ubiquitin-associated prognostic markers are still scarce. METHODS We systematically analyzed the RNA-seq data of 2,830 ubiquitin-related genes from Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA). A CRC prognostic risk model was developed based on ubiquitin-associated gene signatures. In-depth multi-dimensional analyses were performed on ubiquitin-related subgroups with high and low risk. Drug response sensitivity for high-risk CRC patients was also predicted. RESULTS A total of 131 ubiquitin-related differentially expressed genes were retrieved, of which 9 prognostic genes for CRC were ultimately identified and further validated by our clinical CRC tumor and adjacent normal samples. The expression pattern of these 9 ubiquitin-associated genes was found to be strongly related to overall survival, immune cell fractions, and immune-related genes of CRC patients. CRC patients stratified by the ubiquitin prognostic model exhibited distinct clinicopathological characteristics and immune landscapes. A comprehensive framework for personalized medicine prediction identified regorafenib and sorafenib as the most promising therapeutic agents for high ubiquitin-related risk CRC patients, which was confirmed in cell viability assays. CONCLUSIONS Ubiquitin characteristics can reflect CRC prognosis and help develop innovative biomarkers for precision treatment.
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Affiliation(s)
- Peng Cao
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430022, China; Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Qilin Li
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430022, China; Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Danyi Zou
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430022, China; Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin Wang
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430022, China; Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China; Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong, University of Science & Technology, Wuhan 430022, China.
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Hirasawa H, Aoba K, Miwa N. Acid-Sensitive Outwardly Rectifying Cl - Current in OV2944 Mouse Ovarian Cancer Cells. Cell Physiol Biochem 2024; 58:172-181. [PMID: 38643508 DOI: 10.33594/000000692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2024] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND/AIMS Extracellular acidic conditions impair cellular activities; however, some cancer cells drive cellular signaling to adapt to the acidic environment. It remains unclear how ovarian cancer cells sense changes in extracellular pH. This study was aimed at characterizing acid-inducible currents in an ovarian cancer cell line and evaluating the involvement of these currents in cell viability. METHODS The biophysical and pharmacological properties of membrane currents in OV2944, a mouse ovarian cancer cell line, were studied using the whole-cell configuration of the patch-clamp technique. Viability of this cell type in acidic medium was evaluated using the MTT assay. RESULTS OV2944 had significant acid-sensitive outwardly rectifying (ASOR) Cl- currents at a pH50 of 5.3. The ASOR current was blocked by pregnenolone sulfate (PS), a steroid ion channel modulator that blocks the ASOR channel as one of its targets. The viability of the cells was reduced after exposure to an acidic medium (pH 5.3) but was slightly restored upon PS administration. CONCLUSION These results offer first evidence for the presence of ASOR Cl- channel in ovarian cancer cells and indicate its involvement in cell viability under acidic environment.
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Affiliation(s)
- Hajime Hirasawa
- Department of Physiology, Saitama Medical University, Moro-hongo 38, Moroyama-machi, Iruma-gun, Saitama, Japan,
| | - Kayo Aoba
- Department of Physiology, Saitama Medical University, Moro-hongo 38, Moroyama-machi, Iruma-gun, Saitama, Japan
| | - Naofumi Miwa
- Department of Physiology, Saitama Medical University, Moro-hongo 38, Moroyama-machi, Iruma-gun, Saitama, Japan,
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12
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Buckley C, Wang H, O'Dell R, Del Rosario M, Parimala Chelvi Ratnamani M, Rome M, Wang H. Creation of Porous, Perfusable Microtubular Networks for Improved Cell Viability in Volumetric Hydrogels. ACS Appl Mater Interfaces 2024; 16:18522-18533. [PMID: 38564436 DOI: 10.1021/acsami.4c00716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The creation of large, volumetric tissue-engineered constructs has long been hindered due to the lack of effective vascularization strategies. Recently, 3D printing has emerged as a viable approach to creating vascular structures; however, its application is limited. Here, we present a simple and controllable technique to produce porous, free-standing, perfusable tubular networks from sacrificial templates of polyelectrolyte complex and coatings of salt-containing citrate-based elastomer poly(1,8-octanediol-co-citrate) (POC). As demonstrated, fully perfusable and interconnected POC tubular networks with channel diameters ranging from 100 to 400 μm were created. Incorporating NaCl particulates into the POC coating enabled the formation of micropores (∼19 μm in diameter) in the tubular wall upon particulate leaching to increase the cross-wall fluid transport. Casting and cross-linking gelatin methacrylate (GelMA) suspended with human osteoblasts over the free-standing porous POC tubular networks led to the fabrication of 3D cell-encapsulated constructs. Compared to the constructs without POC tubular networks, those with either solid or porous wall tubular networks exhibited a significant increase in cell viability and proliferation along with healthy cell morphology, particularly those with porous networks. Taken together, the sacrificial template-assisted approach is effective to fabricate tubular networks with controllable channel diameter and patency, which can be easily incorporated into cell-encapsulated hydrogels or used as tissue-engineering scaffolds to improve cell viability.
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Affiliation(s)
- Christian Buckley
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
- Semcer Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Haoyu Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
- Semcer Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Robert O'Dell
- Department of Chemical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Matthew Del Rosario
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Matangi Parimala Chelvi Ratnamani
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
- Semcer Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Mark Rome
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Hongjun Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
- Semcer Center for Healthcare Innovation, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
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13
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Tuttle AM, Miller LN, Royer LJ, Wen H, Kelly JJ, Calistri NL, Heiser LM, Nechiporuk AV. Single-Cell Analysis of Rohon-Beard Neurons Implicates Fgf Signaling in Axon Maintenance and Cell Survival. J Neurosci 2024; 44:e1600232024. [PMID: 38423763 PMCID: PMC11026351 DOI: 10.1523/jneurosci.1600-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 01/18/2024] [Accepted: 02/18/2024] [Indexed: 03/02/2024] Open
Abstract
Peripheral sensory neurons are a critical part of the nervous system that transmit a multitude of sensory stimuli to the central nervous system. During larval and juvenile stages in zebrafish, this function is mediated by Rohon-Beard somatosensory neurons (RBs). RBs are optically accessible and amenable to experimental manipulation, making them a powerful system for mechanistic investigation of sensory neurons. Previous studies provided evidence that RBs fall into multiple subclasses; however, the number and molecular makeup of these potential RB subtypes have not been well defined. Using a single-cell RNA sequencing (scRNA-seq) approach, we demonstrate that larval RBs in zebrafish fall into three, largely nonoverlapping classes of neurons. We also show that RBs are molecularly distinct from trigeminal neurons in zebrafish. Cross-species transcriptional analysis indicates that one RB subclass is similar to a mammalian group of A-fiber sensory neurons. Another RB subclass is predicted to sense multiple modalities, including mechanical stimulation and chemical irritants. We leveraged our scRNA-seq data to determine that the fibroblast growth factor (Fgf) pathway is active in RBs. Pharmacological and genetic inhibition of this pathway led to defects in axon maintenance and RB cell death. Moreover, this can be phenocopied by treatment with dovitinib, an FDA-approved Fgf inhibitor with a common side effect of peripheral neuropathy. Importantly, dovitinib-mediated axon loss can be suppressed by loss of Sarm1, a positive regulator of neuronal cell death and axonal injury. This offers a molecular target for future clinical intervention to fight neurotoxic effects of this drug.
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Affiliation(s)
- Adam M Tuttle
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, Oregon 97239
| | - Lauren N Miller
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, Oregon 97239
| | - Lindsey J Royer
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, Oregon 97239
| | - Hua Wen
- Vollum Institute, Oregon Health & Science University, Portland, Oregon 97239
| | - Jimmy J Kelly
- Vollum Institute, Oregon Health & Science University, Portland, Oregon 97239
| | - Nicholas L Calistri
- Biomedical Engineering, Oregon Health & Science University, Portland, Oregon 97239
| | - Laura M Heiser
- Biomedical Engineering, Oregon Health & Science University, Portland, Oregon 97239
| | - Alex V Nechiporuk
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, Oregon 97239
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14
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Macečková D, Vaňková L, Holubová M, Jindra P, Klieber R, Jandová E, Pitule P. Current knowledge about FLT3 gene mutations, exploring the isoforms, and protein importance in AML. Mol Biol Rep 2024; 51:521. [PMID: 38625438 DOI: 10.1007/s11033-024-09452-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/15/2024] [Indexed: 04/17/2024]
Abstract
Acute myeloid leukaemia (AML) is a complex haematological malignancy characterised by diverse genetic alterations leading to abnormal proliferation of myeloid precursor cells. One of the most significant genetic alterations in AML involves mutations in the FLT3 gene, which plays a critical role in haematopoiesis and haematopoietic homeostasis. This review explores the current understanding of FLT3 gene mutations and isoforms and the importance of the FLT3 protein in AML. FLT3 mutations, including internal tandem duplications (FLT3-ITD) and point mutations in the tyrosine kinase domain (FLT3-TKD), occur in 25-30% in AML and are associated with poor prognosis. FLT3-ITD mutations lead to constitutive activation of the FLT3 signalling pathway, promoting cell survival and proliferation. FLT3-TKD mutations affect the tyrosine kinase domain and affect AML prognosis in various ways. Furthermore, FLT3 isoforms, including shorter variants, contribute to the complexity of FLT3 biology. Additionally, nonpathological polymorphisms in FLT3 are being explored for their potential impact on AML prognosis and treatment response. This review also discusses the development of molecular treatments targeting FLT3, including first-generation and next-generation tyrosine kinase inhibitors, highlighting the challenges of resistance that often arise during therapy. The final chapter describes FLT3 protein domain rearrangements and their relevance to AML pathogenesis.
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Affiliation(s)
- Diana Macečková
- Laboratory of Tumor Biology and Immunotherapy Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, Pilsen, 32300, Czechia.
| | - Lenka Vaňková
- Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia
| | - Monika Holubová
- Laboratory of Tumor Biology and Immunotherapy Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, Pilsen, 32300, Czechia
- Department of Haematology and Oncology, University Hospital Pilsen, Pilsen, Czechia
| | - Pavel Jindra
- Department of Haematology and Oncology, University Hospital Pilsen, Pilsen, Czechia
| | - Robin Klieber
- Laboratory of Tumor Biology and Immunotherapy Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, Pilsen, 32300, Czechia
- Department of Haematology and Oncology, University Hospital Pilsen, Pilsen, Czechia
| | - Eliška Jandová
- Laboratory of Tumor Biology and Immunotherapy Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, Pilsen, 32300, Czechia
| | - Pavel Pitule
- Laboratory of Tumor Biology and Immunotherapy Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, Pilsen, 32300, Czechia
- Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia
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15
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Enlund S, Sinha I, Neofytou C, Amor AR, Papadakis K, Nilsson A, Jiang Q, Hermanson O, Holm F. The CNS microenvironment promotes leukemia cell survival by disrupting tumor suppression and cell cycle regulation in pediatric T-cell acute lymphoblastic leukemia. Exp Cell Res 2024; 437:114015. [PMID: 38561062 DOI: 10.1016/j.yexcr.2024.114015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 03/21/2024] [Accepted: 03/23/2024] [Indexed: 04/04/2024]
Abstract
A major obstacle in improving survival in pediatric T-cell acute lymphoblastic leukemia is understanding how to predict and treat leukemia relapse in the CNS. Leukemia cells are capable of infiltrating and residing within the CNS, primarily the leptomeninges, where they interact with the microenvironment and remain sheltered from systemic treatment. These cells can survive in the CNS, by hijacking the microenvironment and disrupting normal functions, thus promoting malignant transformation. While the protective effects of the bone marrow niche have been widely studied, the mechanisms behind leukemia infiltration into the CNS and the role of the CNS niche in leukemia cell survival remain unknown. We identified a dysregulated gene expression profile in CNS infiltrated T-ALL and CNS relapse, promoting cell survival, chemoresistance, and disease progression. Furthermore, we discovered that interactions between leukemia cells and human meningeal cells induced epigenetic alterations, such as changes in histone modifications, including H3K36me3 levels. These findings are a step towards understanding the molecular mechanisms promoting leukemia cell survival in the CNS microenvironment. Our results highlight genetic and epigenetic alterations induced by interactions between leukemia cells and the CNS niche, which could potentially be utilized as biomarkers to predict CNS infiltration and CNS relapse.
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Affiliation(s)
- Sabina Enlund
- Deparment of Women's and Children's Health, Division of Pediatric Oncology and Surgery, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Indranil Sinha
- Deparment of Women's and Children's Health, Division of Pediatric Oncology and Surgery, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Christina Neofytou
- Department of Neuroscience, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Amanda Ramilo Amor
- Deparment of Women's and Children's Health, Division of Pediatric Oncology and Surgery, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Konstantinos Papadakis
- Deparment of Women's and Children's Health, Division of Pediatric Oncology and Surgery, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Anna Nilsson
- Deparment of Women's and Children's Health, Division of Pediatric Oncology and Surgery, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Qingfei Jiang
- Division of Regenerative Medicine, Department of Medicine, Moores Cancer Center, University of California, San Diego, La Jolla, CA, USA
| | - Ola Hermanson
- Department of Neuroscience, Karolinska Institutet, 171 77, Stockholm, Sweden
| | - Frida Holm
- Deparment of Women's and Children's Health, Division of Pediatric Oncology and Surgery, Karolinska Institutet, 171 77, Stockholm, Sweden.
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16
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Barbato A, Piscopo F, Salati M, Pollastro C, Evangelista L, Ferrante L, Limongello D, Brillante S, Iuliano A, Reggiani-Bonetti L, Salatiello M, Iaccarino A, Pisapia P, Malapelle U, Troncone G, Indrieri A, Dominici M, Franco B, Carotenuto P. A MiR181/Sirtuin1 regulatory circuit modulates drug response in biliary cancers. Clin Exp Med 2024; 24:74. [PMID: 38598008 PMCID: PMC11006774 DOI: 10.1007/s10238-024-01332-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024]
Abstract
Despite recent advances, biliary tract cancer (BTC) remains one of the most lethal tumor worldwide due to late diagnosis, limited therapeutic strategies and resistance to conventional therapies. In recent years, high-throughput technologies have enabled extensive genome, and transcriptome sequencing unveiling, among others, the regulatory potential of microRNAs (miRNAs). Compelling evidence shown that miRNA are attractive therapeutic targets and promising candidates as biomarkers for various therapy-resistant tumors. The analysis of miRNA profile successfully identified miR-181c and -181d as significantly downregulated in BTC patients. Low miR-181c and -181d expression levels were correlated with worse prognosis and poor treatment efficacy. In fact, progression-free survival analysis indicated poor survival rates in miR-181c and -181d low expressing patients. The expression profile of miR-181c and -181d in BTC cell lines revealed that both miRNAs were dysregulated. Functional in vitro experiments in BTC cell lines showed that overexpression of miR-181c and -181d affected cell viability and increased sensitivity to chemotherapy compared to controls. In addition, by using bioinformatic tools we showed that the miR-181c/d functional role is determined by binding to their target SIRT1 (Sirtuin 1). Moreover, BTC patients expressing high levels of miR-181 and low SIRT1 shown an improved survival and treatment response. An integrative network analysis demonstrated that, miR-181/SIRT1 circuit had a regulatory effect on several important metabolic tumor-related processes. Our study demonstrated that miR-181c and -181d act as tumor suppressor miRNA in BTC, suggesting the potential use as therapeutic strategy in resistant cancers and as predictive biomarker in the precision medicine of BTC.
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Affiliation(s)
- Anna Barbato
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
- Department of Translational Medical Science, Medical Genetics, University of Naples "Federico II", 80131, Naples, Italy
| | - Fabiola Piscopo
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
- Department of Translational Medical Science, Medical Genetics, University of Naples "Federico II", 80131, Naples, Italy
| | - Massimiliano Salati
- Division of Oncology, Department of Oncology and Hematology, University Hospital of Modena, 41125, Modena, Italy
| | - Carla Pollastro
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
- Department of Translational Medical Science, Medical Genetics, University of Naples "Federico II", 80131, Naples, Italy
| | - Lorenzo Evangelista
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
| | - Luigi Ferrante
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
| | - Davide Limongello
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
| | - Simona Brillante
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
- IRGB, Institute for Genetic and Biomedical Research, National Research Council (CNR), Milan, Italy
| | - Antonella Iuliano
- Department of Mathematics, Computer Science and Economics (DIMIE), University of Basilicata, 85100, Potenza, Italy
| | - Luca Reggiani-Bonetti
- Department of Medical and Surgical Sciences for Children and Adults, University Hospital of Modena, 41125, Modena, Italy
| | - Maria Salatiello
- Department of Public Health, Universita' degli Studi di Napoli-AOU Federico II, 80131, Naples, Italy
| | - Antonino Iaccarino
- Department of Public Health, Universita' degli Studi di Napoli-AOU Federico II, 80131, Naples, Italy
| | - Pasquale Pisapia
- Department of Public Health, Universita' degli Studi di Napoli-AOU Federico II, 80131, Naples, Italy
| | - Umberto Malapelle
- Department of Public Health, Universita' degli Studi di Napoli-AOU Federico II, 80131, Naples, Italy
| | - Giancarlo Troncone
- Department of Public Health, Universita' degli Studi di Napoli-AOU Federico II, 80131, Naples, Italy
| | - Alessia Indrieri
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
- IRGB, Institute for Genetic and Biomedical Research, National Research Council (CNR), Milan, Italy
| | - Massimo Dominici
- Division of Oncology, Department of Oncology and Hematology, University Hospital of Modena, 41125, Modena, Italy
| | - Brunella Franco
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
- Department of Translational Medical Science, Medical Genetics, University of Naples "Federico II", 80131, Naples, Italy
- Scuola Superiore Meridionale (SSM, School of Advanced Studies), Genomics and Experimental Medicine Program, 80078, Naples, Italy
| | - Pietro Carotenuto
- TIGEM, Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy.
- Department of Translational Medical Science, Medical Genetics, University of Naples "Federico II", 80131, Naples, Italy.
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17
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Nie L, Wang C, Huang M, Liu X, Feng X, Tang M, Li S, Hang Q, Teng H, Shen X, Ma L, Gan B, Chen J. DePARylation is critical for S phase progression and cell survival. eLife 2024; 12:RP89303. [PMID: 38578205 PMCID: PMC10997334 DOI: 10.7554/elife.89303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024] Open
Abstract
Poly(ADP-ribose)ylation or PARylation by PAR polymerase 1 (PARP1) and dePARylation by poly(ADP-ribose) glycohydrolase (PARG) are equally important for the dynamic regulation of DNA damage response. PARG, the most active dePARylation enzyme, is recruited to sites of DNA damage via pADPr-dependent and PCNA-dependent mechanisms. Targeting dePARylation is considered an alternative strategy to overcome PARP inhibitor resistance. However, precisely how dePARylation functions in normal unperturbed cells remains elusive. To address this challenge, we conducted multiple CRISPR screens and revealed that dePARylation of S phase pADPr by PARG is essential for cell viability. Loss of dePARylation activity initially induced S-phase-specific pADPr signaling, which resulted from unligated Okazaki fragments and eventually led to uncontrolled pADPr accumulation and PARP1/2-dependent cytotoxicity. Moreover, we demonstrated that proteins involved in Okazaki fragment ligation and/or base excision repair regulate pADPr signaling and cell death induced by PARG inhibition. In addition, we determined that PARG expression is critical for cellular sensitivity to PARG inhibition. Additionally, we revealed that PARG is essential for cell survival by suppressing pADPr. Collectively, our data not only identify an essential role for PARG in normal proliferating cells but also provide a potential biomarker for the further development of PARG inhibitors in cancer therapy.
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Affiliation(s)
- Litong Nie
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Chao Wang
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Min Huang
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Xiaoguang Liu
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Xu Feng
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Mengfan Tang
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Siting Li
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Qinglei Hang
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Hongqi Teng
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Xi Shen
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
- Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Li Ma
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Boyi Gan
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Junjie Chen
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer CenterHoustonUnited States
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18
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Jeang WJ, Bochenek MA, Bose S, Zhao Y, Wong BM, Yang J, Jiang AL, Langer R, Anderson DG. Silicone cryogel skeletons enhance the survival and mechanical integrity of hydrogel-encapsulated cell therapies. Sci Adv 2024; 10:eadk5949. [PMID: 38578991 PMCID: PMC10997197 DOI: 10.1126/sciadv.adk5949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 03/01/2024] [Indexed: 04/07/2024]
Abstract
The transplantation of engineered cells that secrete therapeutic proteins presents a promising method for addressing a range of chronic diseases. However, hydrogels used to encase and protect non-autologous cells from immune rejection often suffer from poor mechanical properties, insufficient oxygenation, and fibrotic encapsulation. Here, we introduce a composite encapsulation system comprising an oxygen-permeable silicone cryogel skeleton, a hydrogel matrix, and a fibrosis-resistant polymer coating. Cryogel skeletons enhance the fracture toughness of conventional alginate hydrogels by 23-fold and oxygen diffusion by 2.8-fold, effectively mitigating both implant fracture and hypoxia of encapsulated cells. Composite implants containing xenogeneic cells engineered to secrete erythropoietin significantly outperform unsupported alginate implants in therapeutic delivery over 8 weeks in immunocompetent mice. By improving mechanical resiliency and sustaining denser cell populations, silicone cryogel skeletons enable more durable and miniaturized therapeutic implants.
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Affiliation(s)
- William J. Jeang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Matthew A. Bochenek
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Suman Bose
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Yichao Zhao
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Bryan M. Wong
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jiawei Yang
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Mechanical and Materials Engineering, Worcester Polytechnic Institute, Worcester, MA 01609, USA
| | - Alexis L. Jiang
- Department of Computer Science, Wellesley College, Wellesley, MA 02481, USA
| | - Robert Langer
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Daniel G. Anderson
- David H Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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19
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Shen YX, Lee PS, Teng MC, Huang JH, Wang CC, Fan HF. Influence of Cigarette Aerosol in Alpha-Synuclein Oligomerization and Cell Viability in SH-SY5Y: Implications for Parkinson's Disease. ACS Chem Neurosci 2024; 15:1484-1500. [PMID: 38483468 PMCID: PMC10995954 DOI: 10.1021/acschemneuro.3c00771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/17/2024] Open
Abstract
Although cigarette aerosol exposure is associated with various adverse health issues, its impact on Parkinson's disease (PD) remains elusive. Here, we investigated the effect of cigarette aerosol extract (CAE) on SH-SY5Y cells for the first time, both with and without α-synuclein (α-Syn) overexpression. We found that α-Syn aggravates CAE-induced cell death, oxidative stress, and mitochondrial dysfunction. Fluorescence cross-correlation spectroscopy (FCCS) revealed a dual distribution of α-Syn within the cells, with homogeneous regions indicative of monomeric α-Syn and punctated regions, suggesting the formation of oligomers. Moreover, we observed colocalization of α-Syn oligomers with lysosomes along with a reduction in autophagy activity. These findings suggest that α-Syn overexpression exacerbates CAE-induced intracellular cytotoxicity, mitochondrial dysfunction, and autophagy dysregulation, leading to elevated cell mortality. Our findings provide new insights into the pathogenic mechanisms linking exposure to cigarette aerosols with neurodegenerative diseases.
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Affiliation(s)
- Yu-Xin Shen
- Institute
of Medical Science and Technology, National
Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Aerosol
Science Research Center, National Sun Yat-sen
University, Kaohsiung 804, Taiwan
| | - Pe-Shuen Lee
- Institute
of Medical Science and Technology, National
Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Aerosol
Science Research Center, National Sun Yat-sen
University, Kaohsiung 804, Taiwan
| | - Ming-Chu Teng
- Institute
of Medical Science and Technology, National
Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Aerosol
Science Research Center, National Sun Yat-sen
University, Kaohsiung 804, Taiwan
| | - Jhih-Hong Huang
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Aerosol
Science Research Center, National Sun Yat-sen
University, Kaohsiung 804, Taiwan
| | - Chia C. Wang
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Aerosol
Science Research Center, National Sun Yat-sen
University, Kaohsiung 804, Taiwan
| | - Hsiu-Fang Fan
- Institute
of Medical Science and Technology, National
Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Aerosol
Science Research Center, National Sun Yat-sen
University, Kaohsiung 804, Taiwan
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20
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Chen X, Rahman A, Akumwami S, Morishita A, Kitada K, Ikeda Y, Funamoto M, Nishiyama A. Effects of D-allose on ATP production and cell viability in neonatal rat cardiomyocytes. J Pharmacol Sci 2024; 154:274-278. [PMID: 38485345 DOI: 10.1016/j.jphs.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/26/2024] [Accepted: 02/14/2024] [Indexed: 03/19/2024] Open
Abstract
2-Deoxy-d-glucose (2DG) induces anticancer effects through glycolytic inhibition but it may raise the risk of arrhythmia. The rare monosaccharide d-allose also has anticancer properties, but its cardiac effects are unknown. We examined the effects of d-allose on adenosine triphosphate (ATP) production in neonatal rat cardiomyocytes. We showed that 25 mM d-allose selectively reduced glycolytic ATP, but had minimal impact on mitochondrial ATP, while 1 mM 2DG strongly inhibited both. Furthermore, d-allose had less impact on cell viability and was less cytotoxic than 2DG; neither compound caused apoptosis. Thus, d-allose selectively diminished glycolytic ATP production with no apparent effects on cardiomyocytes.
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Affiliation(s)
- Xi Chen
- Department of Pharmacology, Kagawa University, Kagawa, Japan
| | - Asadur Rahman
- Department of Pharmacology, Kagawa University, Kagawa, Japan.
| | - Steeve Akumwami
- Department of Pharmacology, Kagawa University, Kagawa, Japan; Department of Anesthesiology, Kagawa University, Kagawa, Japan
| | - Asahiro Morishita
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Kento Kitada
- Department of Pharmacology, Kagawa University, Kagawa, Japan
| | - Yasumasa Ikeda
- Department of Pharmacology, Graduate School of Biomedical Science, Tokushima University, Tokushima, Japan
| | - Masafumi Funamoto
- Department of Pharmacology, Graduate School of Biomedical Science, Tokushima University, Tokushima, Japan
| | - Akira Nishiyama
- Department of Pharmacology, Kagawa University, Kagawa, Japan
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21
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Zhang X, Bao M, Zhang J, Zhu L, Wang D, Liu X, Xu L, Luan L, Liu Y, Liu Y. Neuroprotective mechanism of ribisin A on H 2O 2-induced PC12 cell injury model. Tissue Cell 2024; 87:102322. [PMID: 38367324 DOI: 10.1016/j.tice.2024.102322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/31/2024] [Accepted: 01/31/2024] [Indexed: 02/19/2024]
Abstract
Ribisin A has been shown to have neurotrophic activity. The aim of this study was to evaluate the neuroprotective effect of ribisin A on injured PC12 cells and elucidate its mechanism. In this project, PC12 cells were induced by H2O2 to establish an injury model. After treatment with ribisin A, the neuroprotective mechanism of ribisin A was investigated by methyl tetrazolium (MTT) assay, Enzyme-linked immunosorbent assay (ELISA), flow cytometric analysis, fluorescent probe analysis, and western blot. We found that ribisin A decreased the rate of lactate dehydrogenase (LDH) release, increased cellular superoxide dismutase (SOD) level, decreased the levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), Ca2+ expression and reactive oxygen species (ROS). Moreover, ribisin A significantly increased mitochondrial membrane potential (MMP) and inhibited apoptosis of PC12 cells. Meanwhile, ribisin A activated the phosphorylation of ERK1/2 and its downstream molecule CREB by upregulating the expression of Trk A and Trk B, the upstream molecules of the ERK signaling pathway.
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Affiliation(s)
- Xin Zhang
- School of Pharmaceutical Sciences, Key Laboratory of Medicinal Fungi and Resource Development in Shandong Province, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Mengyu Bao
- School of Pharmaceutical Sciences, Key Laboratory of Medicinal Fungi and Resource Development in Shandong Province, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Jingyi Zhang
- School of Pharmaceutical Sciences, Key Laboratory of Medicinal Fungi and Resource Development in Shandong Province, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lihao Zhu
- Sishui Siheyuan Culture and Tourism Development Company, Ltd, Sishui 273200, China
| | - Di Wang
- School of Pharmaceutical Sciences, Key Laboratory of Medicinal Fungi and Resource Development in Shandong Province, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Xin Liu
- School of Pharmaceutical Sciences, Key Laboratory of Medicinal Fungi and Resource Development in Shandong Province, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lingchuan Xu
- School of Pharmaceutical Sciences, Key Laboratory of Medicinal Fungi and Resource Development in Shandong Province, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lijuan Luan
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China.
| | - Yuguo Liu
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China.
| | - Yuhong Liu
- School of Pharmaceutical Sciences, Key Laboratory of Medicinal Fungi and Resource Development in Shandong Province, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
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22
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Shang KM, Kato H, Gonzalez N, Kandeel F, Tai YC, Komatsu H. A novel approach to determine the critical survival threshold of cellular oxygen within spheroids via integrating live/dead cell imaging with oxygen modeling. Am J Physiol Cell Physiol 2024; 326:C1262-C1271. [PMID: 38497111 DOI: 10.1152/ajpcell.00024.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 03/19/2024]
Abstract
Defining the oxygen level that induces cell death within 3-D tissues is vital for understanding tissue hypoxia; however, obtaining accurate measurements has been technically challenging. In this study, we introduce a noninvasive, high-throughput methodology to quantify critical survival partial oxygen pressure (pO2) with high spatial resolution within spheroids by using a combination of controlled hypoxic conditions, semiautomated live/dead cell imaging, and computational oxygen modeling. The oxygen-permeable, micropyramid patterned culture plates created a precisely controlled oxygen condition around the individual spheroid. Live/dead cell imaging provided the geometric information of the live/dead boundary within spheroids. Finally, computational oxygen modeling calculated the pO2 at the live/dead boundary within spheroids. As proof of concept, we determined the critical survival pO2 in two types of spheroids: isolated primary pancreatic islets and tumor-derived pseudoislets (2.43 ± 0.08 vs. 0.84 ± 0.04 mmHg), indicating higher hypoxia tolerance in pseudoislets due to their tumorigenic origin. We also applied this method for evaluating graft survival in cell transplantations for diabetes therapy, where hypoxia is a critical barrier to successful transplantation outcomes; thus, designing oxygenation strategies is required. Based on the elucidated critical survival pO2, 100% viability could be maintained in a typically sized primary islet under the tissue pO2 above 14.5 mmHg. This work presents a valuable tool that is potentially instrumental for fundamental hypoxia research. It offers insights into physiological responses to hypoxia among different cell types and may refine translational research in cell therapies.NEW & NOTEWORTHY Our study introduces an innovative combinatory approach for noninvasively determining the critical survival oxygen level of cells within small cell spheroids, which replicates a 3-D tissue environment, by seamlessly integrating three pivotal techniques: cell death induction under controlled oxygen conditions, semiautomated imaging that precisely identifies live/dead cells, and computational modeling of oxygen distribution. Notably, our method ensures high-throughput analysis applicable to various cell types, offering a versatile solution for researchers in diverse fields.
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Affiliation(s)
- Kuang-Ming Shang
- Department of Medical Engineering, California Institute of Technology, Pasadena, California, United States
| | - Hiroyuki Kato
- Department of Translational Research & Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute of City of Hope, Duarte, California, United States
| | - Nelson Gonzalez
- Department of Translational Research & Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute of City of Hope, Duarte, California, United States
| | - Fouad Kandeel
- Department of Translational Research & Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute of City of Hope, Duarte, California, United States
| | - Yu-Chong Tai
- Department of Medical Engineering, California Institute of Technology, Pasadena, California, United States
| | - Hirotake Komatsu
- Department of Translational Research & Cellular Therapeutics, Arthur Riggs Diabetes & Metabolism Research Institute of City of Hope, Duarte, California, United States
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23
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Yıldırım S, Kocabaş F, Mermer A. Development, synthesis and validation of improved c-Myc/Max inhibitors. J Cell Mol Med 2024; 28:e18272. [PMID: 38568057 PMCID: PMC10989597 DOI: 10.1111/jcmm.18272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 12/20/2023] [Indexed: 04/05/2024] Open
Abstract
The pathophysiological foundations of various diseases are often subject to alteration through the utilization of small compounds, rendering them invaluable tools for the exploration and advancement of novel therapeutic strategies. Within the scope of this study, we meticulously curated a diverse library of novel small compounds meticulously designed to specifically target the c-Myc/Max complex. We conducted in vitro examinations of novel c-Myc inhibitors across a spectrum of cancer cell lines, including PANC1 (pancreatic adenocarcinoma), MCF7 (breast carcinoma), DU-145 (prostate carcinoma), and A549 (lung cancer). The initial analysis involved a 25 μM dose, which enabled the identification of potent anticancer compounds effective against a variety of tumour types. We identified c-Myc inhibitors with remarkable potency, featuring IC50 values as low as 1.6 μM and up to 40 times more effective than the reference molecule in diminishing cancer cell viability. Notably, c-Myc-i7 exhibited exceptional selectivity, displaying 37-fold and 59-fold preference for targeting prostate and breast cancers, respectively, over healthy cells. Additionally, we constructed drug-likeness models. This study underscores the potential for in vitro investigations of various tumour types using novel c-Myc inhibitors to yield ground-breaking and efficacious anticancer compounds.
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Affiliation(s)
- Sümbül Yıldırım
- Department of Genetics and Bioengineering, Faculty of EngineeringYeditepe UniversityIstanbulTurkey
- Graduate School of Natural and Applied SciencesYeditepe UniversityIstanbulTurkey
- Institute for Diabetes and CancerHelmholtz Diabetes Center, Helmholtz CenterNeuherbergGermany
| | - Fatih Kocabaş
- Department of Genetics and Bioengineering, Faculty of EngineeringYeditepe UniversityIstanbulTurkey
- Graduate School of Natural and Applied SciencesYeditepe UniversityIstanbulTurkey
| | - Arif Mermer
- Department of BiotechnologyUniversity of Health SciencesIstanbulTurkey
- Experimental Medicine Application and Research CenterUniversity of Health SciencesIstanbulTurkey
- UR22722, LABCİS, Faculty of Science and TechnologyUniversity of LimogesLimogesFrance
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24
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Grimm F, Asuaje A, Jain A, Silva Dos Santos M, Kleinjung J, Nunes PM, Gehrig S, Fets L, Darici S, MacRae JI, Anastasiou D. Metabolic priming by multiple enzyme systems supports glycolysis, HIF1α stabilisation, and human cancer cell survival in early hypoxia. EMBO J 2024; 43:1545-1569. [PMID: 38485816 PMCID: PMC11021510 DOI: 10.1038/s44318-024-00065-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 04/18/2024] Open
Abstract
Adaptation to chronic hypoxia occurs through changes in protein expression, which are controlled by hypoxia-inducible factor 1α (HIF1α) and are necessary for cancer cell survival. However, the mechanisms that enable cancer cells to adapt in early hypoxia, before the HIF1α-mediated transcription programme is fully established, remain poorly understood. Here we show in human breast cancer cells, that within 3 h of hypoxia exposure, glycolytic flux increases in a HIF1α-independent manner but is limited by NAD+ availability. Glycolytic ATP maintenance and cell survival in early hypoxia rely on reserve lactate dehydrogenase A capacity as well as the activity of glutamate-oxoglutarate transaminase 1 (GOT1), an enzyme that fuels malate dehydrogenase 1 (MDH1)-derived NAD+. In addition, GOT1 maintains low α-ketoglutarate levels, thereby limiting prolyl hydroxylase activity to promote HIF1α stabilisation in early hypoxia and enable robust HIF1α target gene expression in later hypoxia. Our findings reveal that, in normoxia, multiple enzyme systems maintain cells in a primed state ready to support increased glycolysis and HIF1α stabilisation upon oxygen limitation, until other adaptive processes that require more time are fully established.
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Affiliation(s)
- Fiona Grimm
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Agustín Asuaje
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Aakriti Jain
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Mariana Silva Dos Santos
- Metabolomics Science Technology Platform, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Jens Kleinjung
- Computational Biology Science Technology Platform, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Patrícia M Nunes
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Stefanie Gehrig
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Louise Fets
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Salihanur Darici
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - James I MacRae
- Metabolomics Science Technology Platform, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
| | - Dimitrios Anastasiou
- Cancer Metabolism Laboratory, The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK.
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25
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Guette-Marquet S, Saunier V, Pilloux L, Roques C, Bergel A. Electrochemical assay of mammalian cell viability. Bioelectrochemistry 2024; 156:108625. [PMID: 38086275 DOI: 10.1016/j.bioelechem.2023.108625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/22/2023] [Accepted: 12/05/2023] [Indexed: 01/14/2024]
Abstract
We present the first use of amperometric detection to assess the viability of mammalian cells in continuous mode, directly in the cell culture medium. Vero or HeLa cells were injected into electrochemical sensors equipped with a 3-electrode system and containing DCIP 50 µM used as the redox mediator. DCIP was reduced by the viable cells and the reduced form was detected amperometrically at 300 mV vs silver pseudo-reference. The continuous regeneration of the oxidized form of the mediator ensured a stable redox state of the cell environment, allowing the cells to survive during the measurement time. The electrochemical response was related to cell metabolism (no response with dead cells or lysed cells) and depended on both mediator concentration and cell density. The protocol was applied to both cells in suspension and adhered cells. It was also adapted to detect trans-plasma membrane electron transfer (tPMET) by replacing DCIP by ferricyanide 500 µM and using linear scan voltammetry (2 mV/s). The pioneering results described here pave the way to the development of routine electrochemical assays for cell viability and for designing a cell-based analytical platform.
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Affiliation(s)
- Simon Guette-Marquet
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Faculté des Sciences Pharmaceutiques, Toulouse, France
| | - Valentin Saunier
- INSERM, UMR 1048, Institut des Maladies Métaboliques et Cardiovasculaires I2MC, Equipe 1, Toulouse, France
| | - Ludovic Pilloux
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Faculté des Sciences Pharmaceutiques, Toulouse, France
| | - Christine Roques
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Faculté des Sciences Pharmaceutiques, Toulouse, France
| | - Alain Bergel
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France.
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26
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Wu CY, Yu JY, Chen YS, Chang HP, Hsieh BY, Lin YH, Ma CY, Tsai SF, Hsieh M. Effects of down-regulated carbonic anhydrase 8 on cell survival and glucose metabolism in human colorectal cancer cell lines. Cell Biochem Funct 2024; 42:e4001. [PMID: 38571370 DOI: 10.1002/cbf.4001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 03/17/2024] [Accepted: 03/22/2024] [Indexed: 04/05/2024]
Abstract
Carbonic anhydrase 8 (CA8) is a member of the α-carbonic anhydrase family but does not catalyze the reversible hydration of carbon dioxide. In the present study, we examined the effects of CA8 on two human colon cancer cell lines, SW480 and SW620, by suppressing CA8 expression through shRNA knockdown. Our results showed that knockdown of CA8 decreased cell growth and cell mobility in SW620 cells, but not in SW480 cells. In addition, downregulated CA8 resulted in a significant decrease of glucose uptake in both SW480 and SW620 cells. Interestingly, stable downregulation of CA8 decreased phosphofructokinase-1 expression but increased glucose transporter 3 (GLUT3) levels in SW620 cells. However, transient downregulation of CA8 fails to up-regulate GLUT3 expression, indicating that the increased GLUT3 observed in SW620-shCA8 cells is a compensatory effect. In addition, the interaction between CA8 and GLUT3 was evidenced by pull-down and IP assays. On the other hand, we showed that metformin, a first-line drug for type II diabetes patients, significantly inhibited cell migration of SW620 cells, depending on the expressions of CA8 and focal adhesion kinase. Taken together, our data demonstrate that when compared to primary colon cancer SW480 cells, metastatic colon cancer SW620 cells respond differently to downregulated CA8, indicating that CA8 in more aggressive cancer cells may play a more important role in controlling cell survival and metformin response. CA8 may affect glucose metabolism- and cell invasion-related molecules in colon cancer, suggesting that CA8 may be a potential target in future cancer therapy.
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Affiliation(s)
- Cheng-Yen Wu
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
| | - Jia-Yo Yu
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
| | - Yi-Shan Chen
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
| | - Hui-Ping Chang
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
| | - Benjamin Y Hsieh
- Department of Medicine, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Yu-Hsin Lin
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
| | - Chung-Yung Ma
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
| | - Shang-Feng Tsai
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
- Department of Internal Medicine, Division of Nephrology, Taichung Veterans General Hospital, Taichung, Taiwan, Republic of China
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan, Republic of China
| | - Mingli Hsieh
- Department of Life Science, Tunghai University, Taichung, Taiwan, Republic of China
- Life Science Research Center, Tunghai University, Taichung, Taiwan, Republic of China
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27
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Khalef L, Lydia R, Filicia K, Moussa B. Cell viability and cytotoxicity assays: Biochemical elements and cellular compartments. Cell Biochem Funct 2024; 42:e4007. [PMID: 38593323 DOI: 10.1002/cbf.4007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/01/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
Cell viability and cytotoxicity assays play a crucial role in drug screening and evaluating the cytotoxic effects of various chemicals. The quantification of cell viability and proliferation serves as the cornerstone for numerous in vitro assays that assess cellular responses to external factors. In the last decade, several studies have developed guidelines for defining and interpreting cell viability and cytotoxicity based on morphological, biochemical, and functional perspectives. As this domain continues to experience ongoing growth, revealing new mechanisms orchestrating diverse cell cytotoxicity pathways, we suggest a revised classification for multiple assays employed in evaluating cell viability and cell death. This classification is rooted in the cellular compartment and/or biochemical element involved, with a specific focus on mechanistic and essential aspects of the process. The assays are founded on diverse cell functions, encompassing metabolic activity, enzyme activity, cell membrane permeability and integrity, adenosine 5'-triphosphate content, cell adherence, reduction equivalents, dye inclusion or exclusion, constitutive protease activity, colony formation, DNA fragmentation and nuclear splitting. These assays present straightforward, reliable, sensitive, reproducible, cost-effective, and high-throughput approaches for appraising the effects of newly formulated chemotherapeutic biomolecules on the cell survival during the drug development process.
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Affiliation(s)
- Lefsih Khalef
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
| | - Radja Lydia
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
| | - Khettar Filicia
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
| | - Berkoud Moussa
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
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28
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Friedman CA, Saha A, Hackman GL, Lu X, Lodi A, Tiziani S, DiGiovanni J. Novel two-tiered screening approach identifies synergistic combinations of natural compounds for prostate cancer prevention and treatment. Mol Carcinog 2024; 63:589-600. [PMID: 38197430 PMCID: PMC10939931 DOI: 10.1002/mc.23674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 12/13/2023] [Indexed: 01/11/2024]
Abstract
Prostate cancer (PCa) is the second most common cancer type among American men and it is estimated that in 2023, 34,700 men will die from PCa. Since it can take a considerable amount of time for the disease to progress to clinically evident cancer, there is ample opportunity for effective chemopreventive strategies to be applied for the successful management of PCa progression. In the current study, we have developed a two-tiered metabolomics-based screen to identify synergistic combinations of phytochemicals for PCa chemoprevention. This involves an initial screen for ATP depletion in PCa cells followed by a targeted screen for blocking glutamine uptake in the same cells. One of the phytochemical combinations (enoxolone [ENO] + silibinin [SIL]), identified via this screen, was examined for effects on PCa cell survival, oncogenic signaling and tumor growth in vivo. This combination was found to synergistically reduce cell survival, colony formation and cell cycle progression of PCa cell lines to a greater extent than either agent alone. The combination of ENO and SIL also synergistically reduced tumor growth when administered ad libitum through the diet in a HMVP2 allograft PCa tumor model. Treatment with the combination also significantly reduced STAT3 and mTORC1 signaling pathways in mouse and human PCa cells while significantly reducing levels of critical cell cycle regulatory proteins, contributing to the synergistic inhibition of tumor growth observed. Collectively, the current results demonstrate a novel approach to identifying synergistic combinations of phytochemicals for chemoprevention of PCa and possibly other cancers.
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Affiliation(s)
- Chelsea A. Friedman
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712
| | - Achinto Saha
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712
| | - G. Lavender Hackman
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Xiyuan Lu
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Alessia Lodi
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX 78712, USA
- Dell Pediatric Research Institute, Dell Medical School, The University of Texas at Austin, Austin, TX, 78723, USA
| | - Stefano Tiziani
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX 78712, USA
- Dell Pediatric Research Institute, Dell Medical School, The University of Texas at Austin, Austin, TX, 78723, USA
- Department of Oncology, Dell Medical School, Livestrong Cancer Institutes, The University of Texas at Austin, Austin, TX, 78723, USA
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX, 78723, USA
| | - John DiGiovanni
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712
- Dell Pediatric Research Institute, Dell Medical School, The University of Texas at Austin, Austin, TX, 78723, USA
- Department of Oncology, Dell Medical School, Livestrong Cancer Institutes, The University of Texas at Austin, Austin, TX, 78723, USA
- Department of Pediatrics, Dell Medical School, The University of Texas at Austin, Austin, TX, 78723, USA
- Center for Molecular Carcinogenesis and Toxicology, The University of Texas at Austin, Austin, TX 78712
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29
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Kurpanik R, Gajek M, Gryń K, Jeleń P, Ścisłowska-Czarnecka A, Stodolak-Zych E. Multiscale characterization of electrospun non-wovens for corneal regeneration: Impact of microstructure on mechanical, optical and biological properties. J Mech Behav Biomed Mater 2024; 152:106437. [PMID: 38354568 DOI: 10.1016/j.jmbbm.2024.106437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/21/2024] [Accepted: 01/26/2024] [Indexed: 02/16/2024]
Abstract
The multiscale approach in designing substrates for regenerative medicine endows them with beneficial properties determining their performance in the body. Substrates for corneal regeneration should reveal the proper transparency, mechanical properties and microstructure to maintain the functionality of the regenerated tissue. In our study, series of non-wovens with different fibres orientation (random (R), aligned (A)), topography (shish-kebab (KK), core-shell (CS)) and thickness were fabricated via electrospinning. The samples were assessed for mechanical (static tensile test) and optical properties (spectroscopy UV-Vis). The research evaluated the impact of different microstructures on the viability and morphology of three cell lines (Hs 680, HaCaT and RAW 264.7). The results showed how the fibres arrangement influenced mechanical behaviour of the non-wovens. The randomly oriented fibres were more elongated (up to 50 mm) and had a lower maximum tensile force (up to 0.46 N). In turn, the aligned fibres were characterized by lower elongation (up to 19 mm) and higher force (up to 1.45 N). The conducted transparency tests showed the relation between thickness (of the non-woven and fibres) and morphology of the substrate and light transmission. To simulate the in vivo conditions, prior to the light transmission studies, samples were immersed in water. All the samples exhibited high transparency after immersion in water (>80%). The impact of various morphologies was observed in the in vitro studies. All the samples proved high cells viability. Moreover, the substrate morphology had a significant impact on the orientation and arrangement of the fibroblast cytoskeleton. The aligned fibres were oriented in exactly the same direction. The conducted research proved that, by altering the non-wovens microstructure, the properties can be adjusted so as to induce the desirable cellular reaction. This indicates the high potential of electrospun fibres in terms of modulating the corneal cell behaviour in response to the implanted substrate.
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Affiliation(s)
- Roksana Kurpanik
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Krakow, 30-059 Krakow, Poland.
| | - Marcin Gajek
- Department of Ceramics and Refractories, Faculty of Materials Science and Ceramics, AGH University of Krakow, 30-059 Krakow, Poland
| | - Karol Gryń
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Krakow, 30-059 Krakow, Poland
| | - Piotr Jeleń
- Department of Silicate Chemistry and Macromolecular Compounds, Faculty of Materials Science and Ceramics, AGH University of Krakow, 30-059 Krakow, Poland
| | | | - Ewa Stodolak-Zych
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Krakow, 30-059 Krakow, Poland
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Borbényi-Galambos K, Czikora Á, Erdélyi K, Nagy P. Versatile roles of cysteine persulfides in tumor biology. Curr Opin Chem Biol 2024; 79:102440. [PMID: 38422870 DOI: 10.1016/j.cbpa.2024.102440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 03/02/2024]
Abstract
Rewiring the transsulfuration pathway is recognized as a rapid adaptive metabolic response to environmental conditions in cancer cells to support their increased cysteine demand and to produce Reactive Sulfur Species (RSS) including hydrogen sulfide (H2S) and cysteine persulfide. This can directly (via RSS) or indirectly (by supplying Cys) trigger chemical or enzyme catalyzed persulfidation on critical protein cysteine residues to protect them from oxidative damage and to orchestrate protein functions, and thereby contribute to cancer cell plasticity. In this review key aspects of persulfide-mediated biological processes are highlighted and critically discussed in relation to cancer cell survival, bioenergetics, proliferation as well as in tumor angiogenesis, adaptation to hypoxia and oxidative stress, and regulation of epithelial to mesenchymal transition.
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Affiliation(s)
- Klaudia Borbényi-Galambos
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, Budapest, 1122, Hungary; Kálmán Laki Doctoral School, University of Debrecen, Debrecen, Hajdú-Bihar County, 4032, Hungary
| | - Ágnes Czikora
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, Budapest, 1122, Hungary
| | - Katalin Erdélyi
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, Budapest, 1122, Hungary
| | - Péter Nagy
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, Budapest, 1122, Hungary; Department of Anatomy and Histology, HUN-REN-UVMB Laboratory of Redox Biology Research Group, University of Veterinary Medicine, Budapest, 1078, Hungary; Chemistry Institute, University of Debrecen, Debrecen, Hajdú-Bihar County, 4012, Hungary.
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Mohammadpour-Asl S, Roshan-Milani S, Fard AA, Golchin A. Hormetic effects of a cannabinoid system component, 2-arachidonoyl glycerol, on cell viability and expression profile of growth factors in cultured mouse Sertoli cells: Friend or foe of male fertility? Reprod Toxicol 2024; 125:108575. [PMID: 38462211 DOI: 10.1016/j.reprotox.2024.108575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 03/12/2024]
Abstract
The generally undesired effects of exocannabinoids on male reproduction include alterations in testicular cell proliferation and function, as well as apoptosis induction. However, this paradigm has been challenged by the ability of endocannabinoids to regulate reproductive function. The present study addresses these paradoxical facts by investigating the effects of the endocannabinoid 2-arachidonoyl glycerol (2-AG) on mouse Sertoli cells' survival and apoptosis, with a mechanistic insight into Sertoli cell-based growth factors' production. The Mus musculus Sertoli cell line (TM4) was exposed to different concentrations of 2-AG, and cell viability was evaluated using MTT assay. Growth factors' gene and protein expressions were analyzed through RT-PCR and western blotting. 2-AG concentration dependently increased TM4 viability, with a slight increase starting at 0.0001 µM, a peak of 190% of the control level at 1 µM, and a decrease at 3 µM. Moreover, 2-AG paradoxically altered mRNA expression of caspase-3 and growth factors. Caspase-3 mRNA expression was down-regulated, and growth factors mRNA and protein expression were up-regulated when using a low concentration of 2-AG (1 μM). Opposite effects were observed by a higher concentration of 2-AG (3 μM). These paradoxical effects of 2-AG can be explained through the concept of hormesis. The results indicate the pivotal role of 2-AG in mediating Sertoli cell viability and apoptosis, at least in part, through altering growth factors secretion. Furthermore, they suggest the involvement of endocannabinoids in Sertoli cell-based physiological and pathological conditions and reflect the ability of abnormally elevated 2-AG to mimic the actions of exocannabinoids in reproductive dysfunction.
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Affiliation(s)
- Shadi Mohammadpour-Asl
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran; Department of Physiology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Shiva Roshan-Milani
- Neurophysiology Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran.
| | - Amin Abdollahzade Fard
- Nephrology and Kidney Transplant Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Ali Golchin
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran; Department of Clinical Biochemistry and Applied Cell Sciences, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
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Keckstein S, Tilgener C, Jeschke U, Hofmann S, Vilsmaier T, Keilmann L, Heidegger H, Kaltofen T, Batz F, Mahner S, Schröder L. Effects of matcha tea extract on cell viability and estrogen receptor-β expression on MCF-7 breast cancer cells. Arch Gynecol Obstet 2024; 309:1509-1514. [PMID: 37737883 PMCID: PMC10894130 DOI: 10.1007/s00404-023-07209-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/28/2023] [Indexed: 09/23/2023]
Abstract
PURPOSE In the following work, we investigated the effect of matcha green tea extract (MTE) on MCF-7 breast cancer cell viability and estrogen receptor-beta expression (ERβ). METHODS MCF-7 cells were stimulated with MTE at concentrations of 5 and 10 µg/ml. Cell viability was assessed using a water-soluble tetrazolium assay (WST-1 assay) after an incubation time of 72 h. ERβ was quantified at gene level by real-time polymerase chain reaction (PCR). A western blot (WB) was carried out for the qualitative assessment of the expression behavior of on a protein level. RESULTS The WST-1 test showed a significant inhibition of viability in MFC-7 cells after 72 h at 10 µg/ml. The WB demonstrated a significant quantitative decrease of ERβ at protein level with MTE concentrations of 10 µg/ml. In contrast, the PCR did not result in significant downregulation of ERβ. CONCLUSION MTE decreases the cell viability of MCF-7 cells and furthermore leads to a decrease of ERβ at protein level.
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Affiliation(s)
- Simon Keckstein
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Constantin Tilgener
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Department of Urology and Transplant Surgery, Klinikum Stuttgart, Stuttgart, Germany
| | - Udo Jeschke
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Department of Obstetrics and Gynecology, University Hospital Augsburg, Augsburg, Germany
| | - Simone Hofmann
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Theresa Vilsmaier
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lucia Keilmann
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Helene Heidegger
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Till Kaltofen
- Department of Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Falk Batz
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sven Mahner
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lennard Schröder
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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Calabrese EJ, Hayes AW, Pressman P, Dhawan G, Kapoor R, Agathokleous E, Calabrese V. Flavonoids commonly induce hormetic responses. Arch Toxicol 2024; 98:1237-1240. [PMID: 38367038 DOI: 10.1007/s00204-024-03684-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 01/17/2024] [Indexed: 02/19/2024]
Abstract
The present paper provides a new perspective of previously published findings by Siwak (Food Chem 141:1227-1241, 2013) which showed that 15 structurally diverse flavonoids reduced toxicity (i.e., enhanced cell viability) from hypochlorite using the MTT assay within a pre-conditioning experimental protocol, with each agent showing a similar biphasic concentration response relationship. We use this Commentary to point out that each of the concentration response relationships are consistent with the hormetic dose response. The paper of Siwak (Food Chem 141:1227-1241, 2013) is unique in that it provides a comparison of a relatively large number of agents using the identical experimental protocol.
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Affiliation(s)
- Edward J Calabrese
- School of Public Health and Health Sciences, Department of Environmental Health, Morrill I-N344, University of Massachusetts, Amherst, MA, 01003, USA.
| | - A Wallace Hayes
- Center for Environmental Occupational Risk Analysis and Management, College of Public Health, University of South Florida, Tampa, FL, USA
| | - Peter Pressman
- University of Maine, 5728 Fernald Hall, Room 201, Orono, ME, 04469, USA
| | - Gaurav Dhawan
- Sri Guru Ram Das (SGRD), University of Health Sciences, Amritsar, India
| | - Rachna Kapoor
- Saint Francis Hospital and Medical Center, Hartford, CT, USA
| | - Evgenios Agathokleous
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Via Santa Sofia 97, 95123, Catania, Italy
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Alavi MS, Asadpour E, Boroushaki MT, Fakharzadeh Moghadam O, Sadeghnia HR. Zirconium dioxide nanoparticles induced cytotoxicity in rat cerebral cortical neurons and apoptosis in neuron-like N2a and PC12 cell lines. Toxicol Ind Health 2024; 40:145-155. [PMID: 38265950 DOI: 10.1177/07482337241228622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
During recent decades, the application of zirconium dioxide nanoparticles (ZrO2-NP) has been expanded in various fields ranging from medicine to industry. It has been shown that ZrO2-NP has the potential to cross the blood-brain barrier (BBB) and induce neurotoxicity. In the current study, we investigated the in vivo neurotoxicity, as well as, the cellular mechanism of ZrO2-NP toxicity on two neuronal-like cell lines, PC12 and N2a. PC12 and N2a cells were exposed to increasing concentrations of ZrO2-NP (0-2000 µg/ml) for 48 h. The apoptotic effect of ZrO2-NP was determined using annexin V/propidium iodide double staining (by flow cytometry), and western blot analysis of relative apoptotic proteins, including caspase-3, caspase-9, bax, and bcl2. Based on our results, ZrO2-NP at concentrations of 250-2000 μg/mL increased both early and late-stage apoptosis in a concentration-dependent manner. Moreover, the expressions of cleaved-caspase-3 and -9 proteins and the bax/bcl2 ratio were significantly increased. In addition, oral administration of ZrO2-NP (50 mg/kg) to male Wistar rats for 28 days led to the loss of neuronal cells in the cerebral cortex. Taken together, our findings highlighted the role of apoptosis on cytotoxicity induced by ZrO2-NP.
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Affiliation(s)
- Mohaddeseh Sadat Alavi
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elham Asadpour
- Anesthesiology and Critical Care Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Taher Boroushaki
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmacology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Omid Fakharzadeh Moghadam
- Department of Pharmacology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid R Sadeghnia
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmacology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Li Z, Zhu T, Yao F, Shen X, Xu M, Fu L, Wu Y, Ding J, Zhang J, Zhao J, Dong L, Wang X, Yu G. LINC00665 promotes glycolysis in lung adenocarcinoma cells via the let-7c-5p/HMMR axis. J Bioenerg Biomembr 2024; 56:181-191. [PMID: 38411863 DOI: 10.1007/s10863-024-10004-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/29/2024] [Indexed: 02/28/2024]
Abstract
Lung adenocarcinoma (LUAD) is one of the most lethal and common malignancies. The energy metabolism of LUAD is a critical factor affecting its malignant progression, and research on this topic can aid in the development of novel cancer treatment targets. Bioinformatics analysis of the expression of long non-coding RNA (lncRNA) LINC00665 in LUAD was performed. Downstream regulatory molecules of LINC00665 were predicted using the StarBase database. We used quantitative reverse transcription polymerase chain reaction and western blot to measure the expression at mRNA and protein levels, respectively. The effects of the LINC00665/let-7c-5p/HMMR axis on cell viability in vitro were tested by CCK-8 assay. The regulatory effects on glycolysis were analyzed by extracellular acidification rate, oxygen consumption rate, glucose uptake, adenosine triphosphate production, and lactate production. The predicted competitive endogenous RNA mechanism between LINC00665 and let-7c-5p/HMMR was verified by a dual-luciferase reporter gene assay. LINC00665 was upregulated in LUAD. Silencing LINC00665 inhibited tumor proliferation and reduced the glycolytic activity of tumor cells. Additionally, the expression of LINC00665 had a negative correlation with that of let-7c-5p, while the expression of HMMR was remarkably inhibited by let-7c-5p. HMMR could affect the development of LUAD by influencing glycolytic capacity. Mechanistically, LINC00665 acted as a molecular sponge to absorb let-7c-5p and targeted HMMR. Transfection of let-7c-5p inhibitor or overexpression of HMMR plasmid could reverse the inhibition in proliferation and glycolysis of LUAD cells induced by silencing of LINC00665. In summary, this study demonstrated that the LINC00665/let-7c-5p/HMMR regulatory axis promoted the tumorigenesis of LUAD by enhancing aerobic glycolysis, suggesting that this regulatory axis was an effective target for inhibiting LUAD progression and providing theoretical support for the development of new drugs for LUAD.
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Affiliation(s)
- Zhupeng Li
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Ting Zhu
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Fuqiang Yao
- Shaoxing University School of Medicine, Shaoxing, 312000, China
| | - Xiao Shen
- Shaoxing University School of Medicine, Shaoxing, 312000, China
| | - Minghao Xu
- Shaoxing University School of Medicine, Shaoxing, 312000, China
| | - Linhai Fu
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Yuanlin Wu
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Jianyi Ding
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Jiandong Zhang
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Junjun Zhao
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Lingjun Dong
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Xiang Wang
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China
| | - Guangmao Yu
- Department of Thoracic Surgery, Shaoxing People's Hospital, No. 568 Zhongxing North Road, Yuecheng District, Shaoxing, 312000, China.
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Yin Q, Luo Y, Yu X, Chen K, Li W, Huang H, Zhang L, Zhou Y, Zhu B, Ma Z, Zhang W. Acoustic Cell Patterning for Structured Cell-Laden Hydrogel Fibers/Tubules. Adv Sci (Weinh) 2024; 11:e2308396. [PMID: 38308105 PMCID: PMC11005686 DOI: 10.1002/advs.202308396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/09/2024] [Indexed: 02/04/2024]
Abstract
Cell-laden hydrogel fibers/tubules are one of the fundamentals of tissue engineering. They have been proven as a promising method for constructing biomimetic tissues, such as muscle fibers, nerve conduits, tendon and vessels, etc. However, current hydrogel fiber/tubule production methods have limitations in ordered cell arrangements, thus impeding the biomimetic configurations. Acoustic cell patterning is a cell manipulation method that has good biocompatibility, wide tunability, and is contact-free. However, there are few studies on acoustic cell patterning for fiber production, especially on the radial figure cell arrangements, which mimic many native tissue-like cell arrangements. Here, an acoustic cell patterning system that can be used to produce hydrogel fibers/tubules with tunable cell patterns is shown. Cells can be pre-patterned in the liquid hydrogel before being extruded as cross-linked hydrogel fibers/tubules. The radial patterns can be tuned with different complexities based on the acoustic resonances. Cell viability assays after 72 h confirm good cell viability and proliferation. Considering the biocompatibility and reliability, the present method can be further used for a variety of biomimetic fabrications.
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Affiliation(s)
- Qiu Yin
- State Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityShanghai200240China
- Institute of Medical Robotics, School of Biomedical EngineeringShanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai200240China
| | - Yucheng Luo
- Institute of Medical Robotics, School of Biomedical EngineeringShanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai200240China
| | - Xianglin Yu
- SJTU Paris Elite Institute of TechnologyShanghai Jiao Tong UniversityShanghai200240China
| | - Keke Chen
- Institute of Medical Robotics, School of Biomedical EngineeringShanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai200240China
| | - Wanlu Li
- School of Biomedical Engineering and Med‐X Research Institute and Shanghai Jiao Tong UniversityShanghai200030P. R. China
| | - Hu Huang
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace EngineeringJilin UniversityChangchunJilin130022China
| | - Lin Zhang
- School of Mechatronic EngineeringChangchun University of TechnologyChangchun130012China
| | - Yinning Zhou
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials EngineeringUniversity of Macau, Avenida da UniversidadeTaipa, Macau999078China
| | - Benpeng Zhu
- School of Integrated Circuit, Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan430074China
| | - Zhichao Ma
- Institute of Medical Robotics, School of Biomedical EngineeringShanghai Jiao Tong UniversityNo.800 Dongchuan RoadShanghai200240China
| | - Wenming Zhang
- State Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityShanghai200240China
- SJTU Paris Elite Institute of TechnologyShanghai Jiao Tong UniversityShanghai200240China
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Jiao Y, Zhao H, Lu L, Zhao X, Wang Y, Zheng B. Transcriptome-wide analysis of the differences between MCF7 cells cultured in DMEM or αMEM. PLoS One 2024; 19:e0298262. [PMID: 38547234 PMCID: PMC10977736 DOI: 10.1371/journal.pone.0298262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/22/2024] [Indexed: 04/02/2024] Open
Abstract
MCF7 cells have been used as an experimental model for breast cancer for decades. Typically, a culture medium is designed to supply cells with the nutrients essential for their continuous proliferation. Each medium has a specific nutritional composition. Therefore, cells cultured in different media may exhibit differences in their metabolism. However, only a few studies have investigated the effects of media on cells. In this study, we compared the effects of Dulbecco's modified Eagle medium (DMEM) and minimum essential medium alpha modification (αMEM) on MCF7 cells. The two media differentially affected the morphology, cell cycle, and proliferation of MCF7 cells, but had no effect on cell death. Replacement of DMEM with αMEM led to a decrease in ATP production and an increase in reactive oxygen species production, but did not affect the cell viability. RNA-sequencing and bioinformatic analyses revealed 721 significantly upregulated and 1247 downregulated genes in cells cultured in αMEM for 48 h compared with that in cells cultured in DMEM. The enriched gene ontology terms were related to mitosis and cell proliferation. Kyoto encyclopedia of genes and genomes analysis revealed cell cycle and DNA replication as the top two significant pathways. MCF7 cells were hypoxic when cultured in αMEM. These results show that the culture medium considerably affects cultured cells. Thus, the stability of the culture system in a study is very important to obtain reliable results.
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Affiliation(s)
- Yang Jiao
- NHC Key Laboratory of Periconception Health Birth in Western China, Kunming, 650500, Yunnan, China
- Biomedical Engineering Research Institute, Kunming Medical University, Kunming, Yunnan, China
| | - Hongbo Zhao
- Department of Laboratory Animal Science, Kunming Medical University, Kunming, Yunnan, China
| | - Lin Lu
- Biomedical Engineering Research Institute, Kunming Medical University, Kunming, Yunnan, China
| | - Xiangyu Zhao
- Wuhuajianmei Dental Clinic, Kunming, Yunnan, China
| | - Yanchun Wang
- Biomedical Engineering Research Institute, Kunming Medical University, Kunming, Yunnan, China
| | - Bingrong Zheng
- School of Medicine, Yunnan University, Kunming, Yunnan, China
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Priyanka HP, Pratap UP, Nair RS, Vasantharekha R, ThyagaRajan S. Estrogen-receptor status determines differential regulation of α1- and α2-adrenoceptor-mediated cell survival, angiogenesis, and intracellular signaling responses in breast cancer cell lines. Med Oncol 2024; 41:92. [PMID: 38526769 DOI: 10.1007/s12032-024-02322-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/01/2024] [Indexed: 03/27/2024]
Abstract
Psychosocial stress promotes cancer pathogenesis involving angiogenesis through alterations in neuroendocrine-immune functions that may involve adrenoceptor (AR)-dependent signaling mechanisms in the brain, lymphoid organs, and cancerous cells. Various concentrations of α1- and α2- AR-specific agonists and antagonists were incubated in vitro with estrogen receptor-positive (ER +) MCF-7, and ER (-) MDA MB-231 cells to examine the secretions of VEGF-A, VEGF-C, and nitric oxide (NO), and expression of signaling molecules- p-ERK, p-CREB, and p-Akt on the proliferation of breast cancer cell lines. Cellular proliferation, VEGF-A and NO secretion, expression of p-ERK, p-CREB, and p-Akt were enhanced in MCF-7 cells treated with α1-AR agonist while VEGF-C secretion alone was enhanced in MDA MB-231 cells. Treatment of MCF-7 and MDA MB-231 cells with α2- AR agonist similarly enhanced proliferation and decreased NO production and p-CREB expression while VEGF-C secretion was decreased in MCF-7 cells and p-Akt expression was decreased in MDA MB-231 cells. α1-AR inhibition reversed cellular proliferation and VEGF-A secretion by MCF-7 cells while α2-AR inhibition reversed the proliferation of MCF-7 and MDA MB-231 cells and VEGF-C secretion by MCF-7 cells. Taken together, breast cancer pathogenesis may be influenced by distinct α-AR-mediated signaling mechanisms on angiogenesis and lymphangiogenesis that are dependent on estrogen receptor status.
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Grants
- BT/PR9199/Med/30/12/2007 Department of Bio-Technology, Government of India, New Delhi.
- BT/PR9199/Med/30/12/2007 Department of Bio-Technology, Government of India, New Delhi.
- BT/PR9199/Med/30/12/2007 Department of Bio-Technology, Government of India, New Delhi.
- BT/PR9199/Med/30/12/2007 Department of Bio-Technology, Government of India, New Delhi.
- BT/PR9199/Med/30/12/2007 Department of Bio-Technology, Government of India, New Delhi.
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Affiliation(s)
- Hannah P Priyanka
- Institute of Advanced Research in Health Sciences, Tamil Nadu Government Multi Super Speciality Hospital, Omandurar Government Estate, Chennai, Tamil Nadu, India
- Integrative Medicine Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - Uday P Pratap
- Integrative Medicine Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - Rahul S Nair
- Institute of Advanced Research in Health Sciences, Tamil Nadu Government Multi Super Speciality Hospital, Omandurar Government Estate, Chennai, Tamil Nadu, India
| | - Ramasamy Vasantharekha
- Integrative Medicine Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
| | - Srinivasan ThyagaRajan
- Institute of Advanced Research in Health Sciences, Tamil Nadu Government Multi Super Speciality Hospital, Omandurar Government Estate, Chennai, Tamil Nadu, India
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Rashidi N, Slater A, Peregrino G, Santin M. A novel, microfluidic high-throughput single-cell encapsulation of human bone marrow mesenchymal stromal cells. J Mater Sci Mater Med 2024; 35:19. [PMID: 38526655 DOI: 10.1007/s10856-024-06785-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 02/17/2024] [Indexed: 03/27/2024]
Abstract
The efficacy of stem-cell therapy depends on the ability of the transplanted cells to escape early immunological reactions and to be retained at the site of transplantation. The use of tissue engineering scaffolds or injectable biomaterials as carriers has been proposed, but they still present limitations linked to a reliable manufacturing process, surgical practice and clinical outcomes. Alginate microbeads are potential candidates for the encapsulation of mesenchymal stromal cells with the aim of providing a delivery carrier suitable for minimally-invasive and scaffold-free transplantation, tissue-adhesive properties and protection from the immune response. However, the formation of stable microbeads relies on the cross-linking of alginate with divalent calcium ions at concentrations that are toxic for the cells, making control over the beads' size and a single-cell encapsulation unreliable. The present work demonstrates the efficiency of an innovative, high throughput, and reproducible microfluidic system to produce single-cell, calcium-free alginate coatings of human mesenchymal stromal cells. Among the various conditions tested, visible light and confocal microscopy following staining of the cell nuclei by DAPI showed that the microfluidic system yielded an optimal single-cell encapsulation of 2000 cells/min in 2% w/v alginate microcapsules of reproducible morphology and an average size of 28.2 ± 3.7 µm. The adhesive properties of the alginate microcapsules, the viability of the encapsulated cells and their ability to escape the alginate microcapsule were demonstrated by the relatively rapid adherence of the beads onto tissue culture plastic and the cells' ability to gradually disrupt the microcapsule shell after 24 h and proliferate. To mimic the early inflammatory response upon transplantation, the encapsulated cells were exposed to proliferating macrophages at different cell seeding densities for up to 2 days and the protection effect of the microcapsule on the cells assessed by time-lapse microscopy showing a shielding effect for up to 48 h. This work underscores the potential of microfluidic systems to precisely encapsulate cells by good manufacturing practice standards while favouring cell retention on substrates, viability and proliferation upon transplantation.
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Affiliation(s)
- Narjes Rashidi
- Centre for Regenerative Medicine and Devices, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK
- School of Applied Sciences, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK
| | - Alex Slater
- Centre for Regenerative Medicine and Devices, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK
- School of Applied Sciences, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK
| | - Giordana Peregrino
- Centre for Regenerative Medicine and Devices, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK
- School of Applied Sciences, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK
| | - Matteo Santin
- Centre for Regenerative Medicine and Devices, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK.
- School of Applied Sciences, University of Brighton, Huxley Building Lewes Road, Brighton, BN2 4GJ, UK.
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Kodali MC, Antone J, Alsop E, Jayakumar R, Parikh K, Chiot A, Sanchez-Molina P, Ajami B, Arnold SE, Jensen K, Das S, Weinberg MS. Cryopreservation of cerebrospinal fluid cells preserves the transcriptional landscape for single-cell analysis. J Neuroinflammation 2024; 21:71. [PMID: 38521932 PMCID: PMC10960996 DOI: 10.1186/s12974-024-03047-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 02/14/2024] [Indexed: 03/25/2024] Open
Abstract
Cerebrospinal fluid (CSF) matrix biomarkers have become increasingly valuable surrogate markers of neuropsychiatric diseases in research and clinical practice. In contrast, CSF cells have been rarely investigated due to their relative scarcity and fragility, and lack of common collection and cryopreservation protocols, with limited exceptions for neurooncology and primary immune-based diseases like multiple sclerosis. the advent of a microfluidics-based multi-omics approach to studying individual cells has allowed for the study of cellular phenotyping, intracellular dynamics, and intercellular relationships that provide multidimensionality unable to be obtained through acellular fluid-phase analyses. challenges to cell-based research include site-to-site differences in handling, storage, and thawing methods, which can lead to inaccuracy and inter-assay variability. In the present study, we performed single-cell RNA sequencing (10x Genomics) on fresh or previously cryopreserved human CSF samples from three alternative cryopreservation methods: Fetal Bovine Serum with Dimethyl sulfoxide (FBS/DMSO), FBS/DMSO after a DNase step (a step often included in epigenetic studies), and cryopreservation using commercially available Recovery© media. In comparing relative differences between fresh and cryopreserved samples, we found little effect of the cryopreservation method on being able to resolve donor-linked cell type proportions, markers of cellular stress, and overall gene expression at the single-cell level, whereas donor-specific differences were readily discernable. We further demonstrate the compatibility of fresh and cryopreserved CSF immune cell sequencing using biologically relevant sexually dimorphic gene expression differences by donor. Our findings support the utility and interchangeability of FBS/DMSO and Recovery cryopreservation with fresh sample analysis, providing a methodological grounding that will enable researchers to further expand our understanding of the CSF immune cell contributions to neurological and psychiatric disease.
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Affiliation(s)
- Mahesh Chandra Kodali
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
| | - Jerry Antone
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Eric Alsop
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, USA
| | | | - Khushi Parikh
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Aude Chiot
- Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, OR, USA
- Department of Behavioral and Systems Neuroscience, Oregon Health and Science University, Portland, OR, USA
| | - Paula Sanchez-Molina
- Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, OR, USA
- Department of Behavioral and Systems Neuroscience, Oregon Health and Science University, Portland, OR, USA
| | - Bahareh Ajami
- Department of Molecular Microbiology and Immunology, Oregon Health and Science University, Portland, OR, USA
- Department of Behavioral and Systems Neuroscience, Oregon Health and Science University, Portland, OR, USA
| | - Steven E Arnold
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Kendall Jensen
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Sudeshna Das
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Marc S Weinberg
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA.
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Komatsu K, Tauchi H. Mechanistic insights into the survival curve of HeLa cells with a short shoulder and their S phase-specific sensitivity†. J Radiat Res 2024; 65:256-258. [PMID: 38151954 PMCID: PMC10959425 DOI: 10.1093/jrr/rrad097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/10/2023] [Indexed: 12/29/2023]
Abstract
HeLa cells are a cell line with two unique cellular features: a short-shouldered survival curve and two peaks of radioresistance during the cell cycle phase, while their underlying mechanisms remain unclear. We herein proposed that these radiobiological features are due to a common mechanism by which radiation suppresses homologous recombination repair (HRR) in a dose-dependent manner. This radio-suppression of HRR is mediated by an intra-S checkpoint and reduces survivals of cells in S phase, especially early S phase, resulting in both short shoulder and radioresistance with two peaks in the cell cycle. This new explanation may not be limited to HeLa cells since a similar close association of these features is also observed in other type of cells.
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Affiliation(s)
- Kenshi Komatsu
- Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida-konoecho, Sakyo, Kyoto-shi, Kyoto 606-8501, Japan
| | - Hiroshi Tauchi
- Department of Biological Sciences, Faculty of Science, Ibaraki University, Bunkyo 2-1-1, Mito, Ibaraki 310-8512, Japan
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Martinez Castillo YG, Evans CS. A SIFI odyssey: Silencing the stress response amid mitochondrial import blockade to safeguard cell survival. Mol Cell 2024; 84:1000-1002. [PMID: 38518747 DOI: 10.1016/j.molcel.2024.02.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 03/24/2024]
Abstract
In a recent study in Nature, Haakonsen et al.1 identify the SIFI complex as a stress response silencer via its E3 ligase activity to target unimported mitochondrial proteins and stress response components for degradation via the proteasome.
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Affiliation(s)
| | - Chantell S Evans
- Department of Cell Biology, Duke University School of Medicine, Durham, NC 27701, USA.
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Neri I, MacCallum J, Di Lorenzo R, Russo G, Lynen F, Grumetto L. Into the toxicity potential of an array of parabens by biomimetic liquid chromatography, cell viability assessments and in silico predictions. Sci Total Environ 2024; 917:170461. [PMID: 38286290 DOI: 10.1016/j.scitotenv.2024.170461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/24/2024] [Accepted: 01/24/2024] [Indexed: 01/31/2024]
Abstract
Five parabens (PBs) i.e., Methylparaben (MP), Ethylparaben (EP), Isopropylparaben (iPrP), Isobutylparaben (iBuP), Benzylparaben (BzP), and their parent compound i.e., para-hydroxy Benzoic Acid (pHBA), were studied both in vitro and in silico. Specifically, we determined their retention on several both protein- (Human Serum Albumin and α1-acidic glycoprotein) and (phospho) lipid- (immobilized artificial membrane (IAM)) based biomimetic stationary phases to evaluate their penetration potential through the biomembranes and their possible distribution in the body. The IAM phases were based either on phosphatidylcholine (PC) analogues i.e., PC.MG and PC.DD2 or on sphingomyelin (SPH). We also assessed their viability effect on breast cancer cells (MCF-7) via MTT assay subjecting the cells to five different PB concentrations i.e., 100 μM, 10 μM, 1 μM, 0.1 μM and 0.01 μM. Finally, their pharmacokinetics and toxicity were assessed by the ADMET Predictor™ software. Isopropylparaben was found to be more active than 17β estradiol (E2) employed as positive control, on the screened cell line inducing cell proliferation up to 150 % more of untreated cells. Other analogues showed only a slight/moderate cell proliferation activity, with parabens having longer/branched side chain showing, on average, a higher proliferation rate. Significant linear direct relationships (for PC.DD2 r2 = 0.89, q2 = 0.86, for SPH r2 = 0.89, q2 = 0.85, for both P value < 0.05) were observed between the difference in proliferative effect between the readout and the control at 0.01 μM concentration and the retention on the IAM phases measured at pH 5.0 for all compounds but pHBA, which is the only analyte of the dataset supporting a carboxylic acid moiety. IAM affinity data measured at pH 7.0 were found to be related to the effective human jejunal permeability as predicted by the software ADMET® Predictor, which is relevant when PBs are added to pharmaceutical and food commodities.
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Affiliation(s)
- Ilaria Neri
- Centre of Biomedicine and Global Health, School of Applied Sciences, Sighthill Campus, Edinburgh Napier University, 9 Sighthill Ct, EH11 4BN Edinburgh, United Kingdom; Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano, 49, I-80131 Naples, Italy; Consorzio Interuniversitario INBB, Viale Medaglie d'Oro, 305, I-00136 Rome, Italy
| | - Janis MacCallum
- Centre of Biomedicine and Global Health, School of Applied Sciences, Sighthill Campus, Edinburgh Napier University, 9 Sighthill Ct, EH11 4BN Edinburgh, United Kingdom
| | - Ritamaria Di Lorenzo
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano, 49, I-80131 Naples, Italy
| | - Giacomo Russo
- Centre of Biomedicine and Global Health, School of Applied Sciences, Sighthill Campus, Edinburgh Napier University, 9 Sighthill Ct, EH11 4BN Edinburgh, United Kingdom.
| | - Frédéric Lynen
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4bis, B-9000 Ghent, Belgium
| | - Lucia Grumetto
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano, 49, I-80131 Naples, Italy
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Jiang L, Huang M, Ge J, Zhang X, Liu Y, Liu H, Liu X, Jiang L. Circular RNA hsa_circ_0005519 contributes to acute kidney injury via sponging microRNA-98-5p. BMC Nephrol 2024; 25:107. [PMID: 38504194 PMCID: PMC10949765 DOI: 10.1186/s12882-024-03544-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 03/13/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND This study intends to explore the role and molecular mechanism of hsa_circ_0005519 in acute kidney injury (AKI). METHODS We conducted reverse transcription-qPCR for human serum to determine levels of hsa_circ_0005519 in AKI patients and healthy controls. Hsa_circ_0005519 was inhibited for expression in HK-2 cells using specific siRNAs. A number of techniques, MTT and ELISA assays, were used to analyze the potential role of hsa_circ_0005519 in cell viability, oxidative stress, and inflammation of LPS-induced HK-2 cells. RESULTS The serum of patients with AKI exhibited a significant increase in hsa_circ_0005519 expression, compared with healthy controls. Hsa_circ_0005519 was knockdown by siRNA, and its knockdown led to cell viability increase in LPS-induced HK-2 cells. Inhibition of hsa_circ_0005519 can reverse the TNF-α, IL-6 and IL-1β increase in LPS-induced HK-2 cells. Inhibiting hsa_circ_0005519 led to downregulation of MPO and MDA levels. MiR-98-5p was a downstream miRNA for hsa_circ_0005519. MiR-98-5p can offset the effects of hsa_circ_0005519 on LPS-induced HK-2 cells. IFG1R was a target gene for miR-98-5p. CONCLUSIONS These findings indicate that the highly expressed hsa_circ_0005519 plays a promoting role in AKI.
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Affiliation(s)
- Linsen Jiang
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, Suzhou, 215000, China
| | - Manxin Huang
- School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Jun Ge
- Department of Nephrology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717, Jinbu Street, Muping District, Yantai, 264100, China
| | - Xuefeng Zhang
- Department of Pharmacy, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264100, China
| | - Ye Liu
- Department of Nephrology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717, Jinbu Street, Muping District, Yantai, 264100, China
| | - Hang Liu
- Department of Nephrology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717, Jinbu Street, Muping District, Yantai, 264100, China
| | - Xiaoming Liu
- Department of Nephrology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717, Jinbu Street, Muping District, Yantai, 264100, China.
| | - Lili Jiang
- Department of Nephrology, Youyang Tujia and Miao Autonomous County People's Hospital, No.102, Middle Road, Taohuayuan Avenue, Taohuayuan Street, Youyang County, Chongqing, 409800, China.
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Pulfer A, Pizzagalli DU, Gagliardi PA, Hinderling L, Lopez P, Zayats R, Carrillo-Barberà P, Antonello P, Palomino-Segura M, Grädel B, Nicolai M, Giusti A, Thelen M, Gambardella LM, Murooka TT, Pertz O, Krause R, Gonzalez SF. Transformer-based spatial-temporal detection of apoptotic cell death in live-cell imaging. eLife 2024; 12:RP90502. [PMID: 38497754 PMCID: PMC10948145 DOI: 10.7554/elife.90502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024] Open
Abstract
Intravital microscopy has revolutionized live-cell imaging by allowing the study of spatial-temporal cell dynamics in living animals. However, the complexity of the data generated by this technology has limited the development of effective computational tools to identify and quantify cell processes. Amongst them, apoptosis is a crucial form of regulated cell death involved in tissue homeostasis and host defense. Live-cell imaging enabled the study of apoptosis at the cellular level, enhancing our understanding of its spatial-temporal regulation. However, at present, no computational method can deliver robust detection of apoptosis in microscopy timelapses. To overcome this limitation, we developed ADeS, a deep learning-based apoptosis detection system that employs the principle of activity recognition. We trained ADeS on extensive datasets containing more than 10,000 apoptotic instances collected both in vitro and in vivo, achieving a classification accuracy above 98% and outperforming state-of-the-art solutions. ADeS is the first method capable of detecting the location and duration of multiple apoptotic events in full microscopy timelapses, surpassing human performance in the same task. We demonstrated the effectiveness and robustness of ADeS across various imaging modalities, cell types, and staining techniques. Finally, we employed ADeS to quantify cell survival in vitro and tissue damage in mice, demonstrating its potential application in toxicity assays, treatment evaluation, and inflammatory dynamics. Our findings suggest that ADeS is a valuable tool for the accurate detection and quantification of apoptosis in live-cell imaging and, in particular, intravital microscopy data, providing insights into the complex spatial-temporal regulation of this process.
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Affiliation(s)
- Alain Pulfer
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Department of Information Technology and Electrical Engineering, ETH ZurichZürichSwitzerland
| | - Diego Ulisse Pizzagalli
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Euler Institute, USILuganoSwitzerland
| | | | | | | | | | - Pau Carrillo-Barberà
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Instituto de Biotecnología y Biomedicina (BioTecMed), Universitat de ValènciaValenciaSpain
| | - Paola Antonello
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
- Institute of Cell Biology, University of BernBernSwitzerland
| | | | - Benjamin Grädel
- Institute of Cell Biology, University of BernBernSwitzerland
| | | | - Alessandro Giusti
- Dalle Molle Institute for Artificial Intelligence, IDSIALuganoSwitzerland
| | - Marcus Thelen
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, USILuganoSwitzerland
| | | | | | - Olivier Pertz
- Institute of Cell Biology, University of BernBernSwitzerland
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Ham SD, Abraham MN, Deutschman CS, Taylor MD. Single-cell RNA sequencing reveals Immune Education promotes T cell survival in mice subjected to the cecal ligation and puncture sepsis model. Front Immunol 2024; 15:1366955. [PMID: 38562928 PMCID: PMC10982361 DOI: 10.3389/fimmu.2024.1366955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 03/06/2024] [Indexed: 04/04/2024] Open
Abstract
Background Individual T cell responses vary significantly based on the microenvironment present at the time of immune response and on prior induced T cell memory. While the cecal ligation and puncture (CLP) model is the most commonly used murine sepsis model, the contribution of diverse T cell responses has not been explored. We defined T cell subset responses to CLP using single-cell RNA sequencing and examined the effects of prior induced T cell memory (Immune Education) on these responses. We hypothesized that Immune Education prior to CLP would alter T cell responses at the single cell level at a single, early post-CLP time point. Methods Splenic T cells were isolated from C57BL/6 mice. Four cohorts were studied: Control, Immune-Educated, CLP, and Immune-Educated CLP. At age 8 weeks, Immune-Educated and Immune-Educated CLP mice received anti-CD3ϵ antibody; Control and CLP mice were administered an isotype control. CLP (two punctures with a 22-gauge needle) was performed at 12-13 weeks of life. Mice were sacrificed at baseline or 24-hours post-CLP. Unsupervised clustering of the transcriptome library identified six distinct T cell subsets: quiescent naïve CD4+, primed naïve CD4+, memory CD4+, naïve CD8+, activated CD8+, and CD8+ cytotoxic T cell subsets. T cell subset specific gene set enrichment analysis and Hurdle analysis for differentially expressed genes (DEGs) were performed. Results T cell responses to CLP were not uniform - subsets of activated and suppressed T cells were identified. Immune Education augmented specific T cell subsets and led to genomic signatures favoring T cell survival in unoperated and CLP mice. Additionally, the combination of Immune Education and CLP effected the expression of genes related to T cell activity in ways that differed from CLP alone. Validating our finding that IL7R pathway markers were upregulated in Immune-Educated CLP mice, we found that Immune Education increased T cell surface IL7R expression in post-CLP mice. Conclusion Immune Education enhanced the expression of genes associated with T cell survival in unoperated and CLP mice. Induction of memory T cell compartments via Immune Education combined with CLP may increase the model's concordance to human sepsis.
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Affiliation(s)
- Steven D. Ham
- The Division of Critical Care Medicine, Department of Pediatrics, Cohen Children’s Medical Center/Northwell Health, New Hyde Park, NY, United States
- Sepsis Research Laboratory, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Mabel N. Abraham
- The Division of Critical Care Medicine, Department of Pediatrics, Cohen Children’s Medical Center/Northwell Health, New Hyde Park, NY, United States
- Sepsis Research Laboratory, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Clifford S. Deutschman
- The Division of Critical Care Medicine, Department of Pediatrics, Cohen Children’s Medical Center/Northwell Health, New Hyde Park, NY, United States
- Sepsis Research Laboratory, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Matthew D. Taylor
- The Division of Critical Care Medicine, Department of Pediatrics, Cohen Children’s Medical Center/Northwell Health, New Hyde Park, NY, United States
- Sepsis Research Laboratory, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
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Jiang W, Jin WL, Xu AM. Cholesterol metabolism in tumor microenvironment: cancer hallmarks and therapeutic opportunities. Int J Biol Sci 2024; 20:2044-2071. [PMID: 38617549 PMCID: PMC11008265 DOI: 10.7150/ijbs.92274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/27/2024] [Indexed: 04/16/2024] Open
Abstract
Cholesterol is crucial for cell survival and growth, and dysregulation of cholesterol homeostasis has been linked to the development of cancer. The tumor microenvironment (TME) facilitates tumor cell survival and growth, and crosstalk between cholesterol metabolism and the TME contributes to tumorigenesis and tumor progression. Targeting cholesterol metabolism has demonstrated significant antitumor effects in preclinical and clinical studies. In this review, we discuss the regulatory mechanisms of cholesterol homeostasis and the impact of its dysregulation on the hallmarks of cancer. We also describe how cholesterol metabolism reprograms the TME across seven specialized microenvironments. Furthermore, we discuss the potential of targeting cholesterol metabolism as a therapeutic strategy for tumors. This approach not only exerts antitumor effects in monotherapy and combination therapy but also mitigates the adverse effects associated with conventional tumor therapy. Finally, we outline the unresolved questions and suggest potential avenues for future investigations on cholesterol metabolism in relation to cancer.
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Affiliation(s)
- Wen Jiang
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, P. R. China
| | - Wei-Lin Jin
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou 730000, P. R. China
| | - A-Man Xu
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, P. R. China
- Anhui Public Health Clinical Center, Hefei 230022, P. R. China
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48
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Chen L, Wang L, Han Z, Qin P, Niu G, Du J. SKI-349, a Sphingosine Kinases 1/2 Inhibitor, Suppresses Cell Viability, Invasion, and AKT/mTOR Signaling Pathway, and Shows Synergistic Cytotoxic Effects with Sorafenib in Hepatocellular Carcinoma. TOHOKU J EXP MED 2024; 262:173-180. [PMID: 38123304 DOI: 10.1620/tjem.2023.j100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
SKI-349 is a novel sphingosine kinases (SPHK) inhibitor with anti-tumor effects. This study aimed to assess the effect of SKI-349 on cell biological behaviors, downstream pathways, and its synergistic effect with sorafenib in hepatocellular carcinoma (HCC). HCC cell lines (Huh7 and Hep3B) were treated with SKI-349 at concentrations of 1, 2, 4, or 8 μM. Then, SPHK1/2 activity, cell viability, proliferation, apoptosis, invasion, and protein expressions of phosphorylated-protein kinase B (p-AKT), AKT, phosphorylated-mammalian target of rapamycin (p-mTOR) and mTOR were detected. Combination index values of SKI-349 (0, 1, 2, 4, or 8 μM) and sorafenib (0, 2.5, 5, 10, or 20 μM) were calculated. SKI-349 decreased the relative SPHK1 and SPHK2 activity compared with blank control in a dose-dependent manner in the Huh7 and Hep3B cell lines. Meanwhile, SKI-349 reduced cell viability, 5-ethynyl-2'-deoxyuridine (EdU) positive cells, and invasive cells, while it increased apoptotic cells compared to blank control in a dose-dependent manner in Huh7 and Hep3B cell lines. Based on the western blot assay, SKI-349 decreased the ratio of p-AKT to AKT and that of p-mTOR to mTOR compared with blank control in a dose-dependent manner in the Huh7 and Hep3B cell lines. Additionally, SKI-349 combined with sorafenib declined cell viability with concentration gradient effects compared to SKI-349 sole treatment, and they had synergistic cytotoxic effects in Huh7 and Hep3B cell lines. SKI-349 suppresses SPHK1 and SPHK2 activity, cell viability, invasion, and AKT/mTOR signaling pathway, as well as exhibits a synergistic cytotoxic effect with sorafenib in HCC.
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Affiliation(s)
- Liqiao Chen
- Department of Basic Medical, Xingtai Medical College
| | | | - Zongqi Han
- Department of Basic Medical, Xingtai Medical College
| | - Peng Qin
- Department of Vascular Intervention, The Second Affiliated Hospital of Xingtai Medical College
| | - Guangxu Niu
- Department of Pathology, Handan Central Hospital
| | - Jingxia Du
- Department of Basic Medical, Xingtai Medical College
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49
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Ramatchandirin B, Iijima M, Ikeda A, Pearah A, Radovick S, Wondisford FE, Sesaki H, He L. Protocol for measuring mitochondrial size in mouse and human liver tissues. STAR Protoc 2024; 5:102842. [PMID: 38244201 PMCID: PMC10831311 DOI: 10.1016/j.xpro.2024.102842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/10/2023] [Accepted: 01/05/2024] [Indexed: 01/22/2024] Open
Abstract
Mitochondrial dynamic process is important for cell viability, metabolic activity, and mitochondria health. Here, we present a protocol for measuring mitochondrial size through immunofluorescence staining, confocal imaging, and analysis in ImageJ. We describe the steps for tissue processing, antigen retrieval, mitochondrial staining using an integrating immunofluorescence assay, and computerized image analysis to measure each mitochondrial size in mouse and human liver tissues. This protocol reduces tissue sample volume and processing time for the preparation of primary cells. For complete details on the use and execution of this protocol, please refer to Pearah et al.1.
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Affiliation(s)
| | - Miho Iijima
- Departments of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Arisa Ikeda
- Departments of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Alexia Pearah
- Departments of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Sally Radovick
- Institute of Clinical Translational Sciences, University of Arizona, Tucson, AZ 85721, USA
| | - Fredric E Wondisford
- Departments of Internal Medicine, University of Arizona College of Medicine-Phoenix, Phoenix, AZ 85004, USA
| | - Hiromi Sesaki
- Departments of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Ling He
- Departments of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Departments of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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50
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Gonçalves JM, Gonçalves JND, Sousa LF, Rodrigues LR, Correia-de-Sá P, Coutinho PJG, Castanheira EMS, Oliveira R, Dias AM. 2,4,5-Triaminopyrimidines as blue fluorescent probes for cell viability monitoring: synthesis, photophysical properties, and microscopy applications. Org Biomol Chem 2024; 22:2252-2263. [PMID: 38390694 DOI: 10.1039/d4ob00092g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Monitoring cell viability is critical in cell biology, pathology, and drug discovery. Most cell viability assays are cell-destructive, time-consuming, expensive, and/or hazardous. Herein, we present a series of newly synthesized 2,4,5-triaminopyrimidine derivatives able to discriminate between live and dead cells. To our knowledge, these compounds are the first fluorescent nucleobase analogues (FNAs) with cell viability monitoring potential. These new fluorescent molecules are synthesized using highly efficient and cost-effective methods and feature unprecedented photophysical properties (longer absorption and emission wavelengths, environment-sensitive emission, and unprecedented brightness within FNAs). Using a live-dead Saccharomyces cerevisiae cell and theoretical assays, the fluorescent 2,4,5-triaminopyrimidine derivatives were found to specifically accumulate inside dead cells by interacting with dsDNA grooves, thus paving the way for the emergence of novel and safe fluorescent cell viability markers emitting in the blue region. As the majority of commercially available viability dyes emit in the green to red region of the visible spectrum, these novel markers might be useful to meet the needs of blue markers for co-staining combinations.
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Affiliation(s)
- Jorge M Gonçalves
- CQ-UM - Centre of Chemistry of University of Minho, Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
- CF-UM-UP - Physics Centre of Minho and Porto Universities and LaPMET (Laboratory of Physics for Materials and Emergent Technologies), Campus de Gualtar, 4710-057, Braga, Portugal
| | - João N D Gonçalves
- CQ-UM - Centre of Chemistry of University of Minho, Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
- CBMA - Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Luís F Sousa
- CQ-UM - Centre of Chemistry of University of Minho, Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
- CF-UM-UP - Physics Centre of Minho and Porto Universities and LaPMET (Laboratory of Physics for Materials and Emergent Technologies), Campus de Gualtar, 4710-057, Braga, Portugal
| | - Lígia R Rodrigues
- CEB - Centre of Biological Engineering, Department of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
- LABBELS - Associate Laboratory, Guimarães, Braga, Portugal
| | - Paulo Correia-de-Sá
- Laboratório de Farmacologia e Neurobiologia, Center for Drug Discovery and Innovative Medicines (MedInUP), Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Paulo J G Coutinho
- CF-UM-UP - Physics Centre of Minho and Porto Universities and LaPMET (Laboratory of Physics for Materials and Emergent Technologies), Campus de Gualtar, 4710-057, Braga, Portugal
| | - Elisabete M S Castanheira
- CF-UM-UP - Physics Centre of Minho and Porto Universities and LaPMET (Laboratory of Physics for Materials and Emergent Technologies), Campus de Gualtar, 4710-057, Braga, Portugal
| | - Rui Oliveira
- CBMA - Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Alice M Dias
- CQ-UM - Centre of Chemistry of University of Minho, Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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