99801
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Nakamura A, Grossman S, Song K, Xega K, Zhang Y, Cvet D, Berger A, Shapiro G, Huszar D. The SUMOylation inhibitor subasumstat potentiates rituximab activity by IFN1-dependent macrophage and NK cell stimulation. Blood 2022; 139:2770-2781. [PMID: 35226739 PMCID: PMC11022956 DOI: 10.1182/blood.2021014267] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 02/07/2022] [Indexed: 11/20/2022] Open
Abstract
Small ubiquitin-like modifier (SUMO) is a member of a ubiquitin-like protein superfamily. SUMOylation is a reversible posttranslational modification that has been implicated in the regulation of various cellular processes including inflammatory responses and expression of type 1 interferons (IFN1). In this report, we have explored the activity of the selective small molecule SUMOylation inhibitor subasumstat (TAK-981) in promoting antitumor innate immune responses. We demonstrate that treatment with TAK-981 results in IFN1-dependent macrophage and natural killer (NK) cell activation, promoting macrophage phagocytosis and NK cell cytotoxicity in ex vivo assays. Furthermore, pretreatment with TAK-981 enhanced macrophage phagocytosis or NK cell cytotoxicity against CD20+ target cells in combination with the anti-CD20 antibody rituximab. In vivo studies demonstrated enhanced antitumor activity of TAK-981 and rituximab in CD20+ lymphoma xenograft models. Combination of TAK-981 with anti-CD38 antibody daratumumab also resulted in enhanced antitumor activity. TAK-981 is currently being studied in phase 1 clinical trials (#NCT03648372, #NCT04074330, #NCT04776018, and #NCT04381650; www.clinicaltrials.gov) for the treatment of patients with lymphomas and solid tumors.
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Affiliation(s)
| | | | | | | | | | | | - Allison Berger
- Oncology Therapeutic Area Unit, Takeda Development Center Americas, Inc., Cambridge, MA
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99802
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RNA-binding protein MEX3D promotes cervical carcinoma tumorigenesis by destabilizing TSC22D1 mRNA. Cell Death Dis 2022; 8:250. [PMID: 35513372 PMCID: PMC9072549 DOI: 10.1038/s41420-022-01049-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/11/2022]
Abstract
RNA-binding proteins (RBPs) have been related to cancer development. Their functions in cervical cancer, however, are virtually unknown. One of these proteins, Mex-3 RNA-binding family member D (MEX3D), has been recently found to exhibit oncogenic properties in a variety of cancer types. In this present study, the functional roles and the regulatory mechanisms underlying MEX3D were examined in cervical cancer. The detection of MEX3D mRNA expression levels in cervical tissues was performed using reverse transcription-quantitative PCR. For functional analysis, for detecting apoptosis and cell proliferation in cervical cancer cells, the Cell Counting Kit-8, colony formation, and flow cytometry were utilized (SiHa and CaSki). The potential mechanisms of MEX3D were assessed and elucidated utilizing western blot analysis, RNA pull-down, RNA immunoprecipitation, and mRNA stability assays. For verification of MEX3D role in vivo, mouse xenograft models were established. When compared to normal cervical tissues, MEX3D expression was observed to be higher in cervical cancer tissues. MEX3D expression was increased in human papillomavirus (HPV) 16 positive cervical cancer tissues and positively regulated by HPV16 E7. When MEX3D expression was knocked down in cervical cancer cells, cell proliferation was decreased, colony formation was inhibited, and apoptosis was promoted. Furthermore, in a mouse xenograft model, knocking down MEX3D expression reduced cervical cancer tumor growth. In addition, MEX3D acted as an RBP to reduce TSC22 domain family protein 1 (TSC22D1) mRNA stability by directly binding to TSC22D1 mRNA. The findings revealed that MEX3D is upregulated by HPV16 E7 and has a crucial oncogenic in cervical cancer development via sponging TSC22D1 for destabilizing its mRNA levels. According to the findings of this study, MEX3D may be a potential therapeutic target for treating cervical cancer patients.
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99803
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Brain Endothelial Cells Utilize Glycolysis for the Maintenance of the Transcellular Permeability. Mol Neurobiol 2022; 59:4315-4333. [PMID: 35508867 DOI: 10.1007/s12035-022-02778-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 02/19/2022] [Indexed: 10/18/2022]
Abstract
Among the components of the blood-brain barrier (BBB), endothelial cells (ECs) play an important role in supplying limited materials, especially glucose, to the brain. However, the mechanism by which glucose is metabolized in brain ECs is still elusive. To address this topic, we assessed the metabolic signature of glucose utilization using live-cell metabolic assays and liquid chromatography-tandem mass spectrometry metabolomic analysis. We found that brain ECs are highly dependent on aerobic glycolysis, generating lactate as its final product with minimal consumption of glucose. Glucose treatment decreased the oxygen consumption rate in a dose-dependent manner, indicating the Crabtree effect. Moreover, when glycolysis was inhibited, brain ECs showed impaired permeability to molecules utilizing transcellular pathway. In addition, we found that the blockade of glycolysis in mouse brain with 2-deoxyglucose administration resulted in decreased transcellular permeability of the BBB. In conclusion, utilizing glycolysis in brain ECs has critical roles in the maintenance and permeability of the BBB. Overall, we could conclude that brain ECs are highly glycolytic, and their energy can be used to maintain the transcellular permeability of the BBB.
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99804
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Kawakami R, Sunaga H, Iso T, Kaneko R, Koitabashi N, Obokata M, Harada T, Matsui H, Yokoyama T, Kurabayashi M. Ketone body and FGF21 coordinately regulate fasting-induced oxidative stress response in the heart. Sci Rep 2022; 12:7338. [PMID: 35513524 PMCID: PMC9072431 DOI: 10.1038/s41598-022-10993-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 04/12/2022] [Indexed: 11/09/2022] Open
Abstract
Ketone body β-hydroxybutyrate (βOHB) and fibroblast growth factor-21 (FGF21) have been proposed to mediate systemic metabolic response to fasting. However, it remains elusive about the signaling elicited by ketone and FGF21 in the heart. Stimulation of neonatal rat cardiomyocytes with βOHB and FGF21 induced peroxisome proliferator-activated receptor α (PPARα) and PGC1α expression along with the phosphorylation of LKB1 and AMPK. βOHB and FGF21 induced transcription of peroxisome proliferator-activated receptor response element (PPRE)-containing genes through an activation of PPARα. Additionally, βOHB and FGF21 induced the expression of Nrf2, a master regulator for oxidative stress response, and catalase and Ucp2 genes. We evaluated the oxidative stress response gene expression after 24 h fast in global Fgf21-null (Fgf21-/-) mice, cardiomyocyte-specific FGF21-null (cmFgf21-/-) mice, wild-type (WT), and Fgf21fl/fl littermates. Fgf21-/- mice but not cmFgf21-/- mice had unexpectedly higher serum βOHB levels, and higher expression levels of PPARα and oxidative stress response genes than WT mice or Fgf21fl/fl littermates. Notably, expression levels of oxidative stress response genes were significantly correlated with serum βOHB and PGC1α levels in both WT and Fgf21-/- mice. These findings suggest that fasting-induced βOHB and circulating FGF21 coordinately regulate oxidative stress response gene expression in the heart.
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Affiliation(s)
- Ryo Kawakami
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan.,Center for Liberal Arts and Sciences, Ashikaga University, 268-1 Omae-machi, Ashikaga, Tochigi, 326-8558, Japan
| | - Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Ryosuke Kaneko
- Bioresource Center, Gunma University, Graduate School of Medicine, Maebashi, Gunma, Japan.,Osaka University, Graduate School of Frontier Biosciences, 1-3 Yamadaoka, Suita, Osaka, Japan
| | - Norimichi Koitabashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Masaru Obokata
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Tomonari Harada
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Gunma, Japan
| | - Tomoyuki Yokoyama
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Gunma, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
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99805
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Srivastava GK, Rodriguez-Crespo D, Fernandez-Bueno I, Pastor JC. Factors influencing mesenchymal stromal cells in in vitro cellular models to study retinal pigment epithelial cell rescue. Hum Cell 2022; 35:1005-1015. [PMID: 35511404 DOI: 10.1007/s13577-022-00705-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/17/2022] [Indexed: 11/29/2022]
Abstract
Mesenchymal stromal cells (MSC) stop or slow retinal pigment epithelium (RPE) and neuroretina (NR) degeneration by paracrine activity in oxidative stress-induced retinal degenerative diseases. However, it is mandatory to develop adequate in vitro models that allow testing new treatment strategies against oxidative stress before performing in vivo studies. The viable double- and triple-layered setups are composed of separate layers of NR, MSC, and RPE (NR-MSC-RPE, NR-RPE, MSC-RPE) partially mimic in vivo retinal conditions. In this study, the paracrine neuroprotective effect of each setup's microenvironment on hydrogen peroxide (H2O2)-stressed was compared with unstressed RPE cells. RPE cell proliferation viability was assessed on day 1, 3, and 6 using Alamar Blue® (10%), MTT (10%) and a cell viability/cytotoxicity assay kit followed by data analysis. The results showed that RPE cells, highly viable (> 90%) in mixed medium of DMEM and neurobasal A (1:1), lost 50% viability on exposure to 400 µM of H2O2 (P < 0.05). The unexposed groups differed significantly from exposed groups for RPE cell growth (RPE and [Formula: see text]RPE (P < 0.0001), NR-MSC-RPE, and NR-MSC-[Formula: see text]RPE (P < 0.05), NR-RPE and NR-[Formula: see text]RPE (P < 0.01), and MSC-RPE and MSC-[Formula: see text]RPE (P < 0.01). NR-[Formula: see text]RPE and NR-RPE supported RPE cell proliferation viability better than other setups (P < 0.01) and RPE cells proliferated 0.49-fold more in NR-MSC-[Formula: see text]RPE than NR-MSC-RPE. Thus, NR and MSC presence improved significantly each setup's microenvironment for cell rescue, nevertheless, each setup also showed limitations for its use as an in vitro study tool. Health of microenvironment of such setups depends on many factors including cell-secreted trophic factors.
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Affiliation(s)
- Girish K Srivastava
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Campus Miguel Delibes, Paseo de Belén, 17, 47011, Valladolid, Spain. .,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla Y León, Valladolid, Spain.
| | - David Rodriguez-Crespo
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Campus Miguel Delibes, Paseo de Belén, 17, 47011, Valladolid, Spain
| | - Ivan Fernandez-Bueno
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Campus Miguel Delibes, Paseo de Belén, 17, 47011, Valladolid, Spain
| | - José Carlos Pastor
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Campus Miguel Delibes, Paseo de Belén, 17, 47011, Valladolid, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla Y León, Valladolid, Spain
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99806
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Graça AL, Gómez-Florit M, Osório H, Rodrigues MT, Domingues RMA, Reis RL, Gomes ME. Controlling the fate of regenerative cells with engineered platelet-derived extracellular vesicles. NANOSCALE 2022; 14:6543-6556. [PMID: 35420605 DOI: 10.1039/d1nr08108j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Extracellular vesicles (EVs) have emerged as cell-free nanotherapeutic agents for the potential treatment of multiple diseases and for tissue engineering and regenerative medicine strategies. Nevertheless, the field has typically relied on EVs derived from stem cells, the production of which in high quantities and high reproducibility is still under debate. Platelet-derived EVs were produced by a freeze-thaw method of platelet concentrates, a highly available clinical waste material. The aim of this study was to produce and thoroughly characterize platelet-derived EVs and understand their effects in adipose-tissue derived stem cells (hASCs), endothelial cells (HUVECs) and macrophages. Two different EV populations were obtained after differential centrifugation, namely small EVs (sEVs) and medium EVs (mEVs), which showed different size distributions and unique proteomic signatures. EV interaction with hASCs resulted in the modulation of the gene expression of markers related to their commitment toward different lineages. Moreover, mEVs showed higher angiogenic potential than sEVs, in a tube formation assay with HUVECs. Also, the EVs were able to modulate macrophage polarization. Altogether, these results suggest that platelet-derived EVs are promising candidates to be used as biochemical signals or therapeutic tools in tissue engineering and regenerative medicine approaches.
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Affiliation(s)
- Ana L Graça
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Manuel Gómez-Florit
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Hugo Osório
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal
| | - Márcia T Rodrigues
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Rui M A Domingues
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Manuela E Gomes
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
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99807
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Gericke B, Wienböker I, Brandes G, Löscher W. Is P-Glycoprotein Functionally Expressed in the Limiting Membrane of Endolysosomes? A Biochemical and Ultrastructural Study in the Rat Liver. Cells 2022; 11:cells11091556. [PMID: 35563868 PMCID: PMC9102269 DOI: 10.3390/cells11091556] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 02/01/2023] Open
Abstract
The drug efflux transporter P-glycoprotein (Pgp; ABCB1) plays an important role in drug absorption, disposition, and elimination. There is an ongoing debate whether, in addition to its localization at the plasma membrane, Pgp may also be expressed at the limiting membrane of endolysosomes (ELs), mediating active EL drug sequestration. If true, this would be an important mechanism to prevent drugs from reaching their intracellular targets. However, direct evidence demonstrating the functional expression of Pgp at the limiting membrane of ELs is lacking. This prompted us to perform a biochemical and ultrastructural study on the intracellular localization of Pgp in native rat liver. For this purpose, we established an improved subcellular fractionation procedure for the enrichment of ELs and employed different biochemical and ultrastructural methods to characterize the Pgp localization and function in the enriched EL fractions. Whereas the biochemical methods seemed to indicate that Pgp is functionally expressed at EL limiting membranes, transmission electron microscopy (TEM) indicated that this only occurs rarely, if at all. Instead, Pgp was found in the limiting membrane of early endosomes and intraluminal vesicles. In additional TEM experiments, using a Pgp-overexpressing brain microvessel endothelial cell line (hCMEC/D3-MDR1-EGFP), we examined whether Pgp is expressed at the limiting membrane of ELs when cells are exposed to high levels of the Pgp substrate doxorubicin. Pgp was seen in early endosomes but only rarely in endolysosomes, whereas Pgp immunogold labeling was detected in large autophagosomes. In summary, our data demonstrate the importance of combining biochemical and ultrastructural methods to investigate the relationship between Pgp localization and function.
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Affiliation(s)
- Birthe Gericke
- Department of Pharmacology, Toxicology, and Pharmacy, University of Veterinary Medicine, 30559 Hannover, Germany; (B.G.); (I.W.)
- Center for Systems Neuroscience, 30559 Hannover, Germany
| | - Inka Wienböker
- Department of Pharmacology, Toxicology, and Pharmacy, University of Veterinary Medicine, 30559 Hannover, Germany; (B.G.); (I.W.)
- Center for Systems Neuroscience, 30559 Hannover, Germany
| | - Gudrun Brandes
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, 30625 Hannover, Germany;
| | - Wolfgang Löscher
- Department of Pharmacology, Toxicology, and Pharmacy, University of Veterinary Medicine, 30559 Hannover, Germany; (B.G.); (I.W.)
- Center for Systems Neuroscience, 30559 Hannover, Germany
- Correspondence:
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99808
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Razin SV, Ulianov SV. Genome-Directed Cell Nucleus Assembly. BIOLOGY 2022; 11:biology11050708. [PMID: 35625436 PMCID: PMC9138775 DOI: 10.3390/biology11050708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/02/2022] [Accepted: 05/02/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Speckles and other nuclear bodies, the nucleolus and perinucleolar zone, transcription/replication factories and the lamina-associated compartment, serve as a structural basis for various genomic functions. In turn, genome activity and specific chromatin 3D organization directly impact the integrity of intranuclear assemblies, initiating/facilitating their formation and dictating their composition. Thus, the large-scale nucleus structure and genome activity mutually influence each other. The cell nucleus is frequently considered a compartment in which the genome is placed to protect it from external forces. Here, we discuss the evidence demonstrating that the cell nucleus should be considered, rather, as structure built around the folded genome. Decondensing chromosomes provide a scaffold for the assembly of the nuclear envelope after mitosis, whereas genome activity directs the assembly of various nuclear compartments, including nucleolus, speckles and transcription factories. Abstract The cell nucleus is frequently considered a cage in which the genome is placed to protect it from various external factors. Inside the nucleus, many functional compartments have been identified that are directly or indirectly involved in implementing genomic DNA’s genetic functions. For many years, it was assumed that these compartments are assembled on a proteinaceous scaffold (nuclear matrix), which provides a structural milieu for nuclear compartmentalization and genome folding while simultaneously offering some rigidity to the cell nucleus. The results of research in recent years have made it possible to consider the cell nucleus from a different angle. From the “box” in which the genome is placed, the nucleus has become a kind of mobile exoskeleton, which is formed around the packaged genome, under the influence of transcription and other processes directly related to the genome activity. In this review, we summarize the main arguments in favor of this point of view by analyzing the mechanisms that mediate cell nucleus assembly and support its resistance to mechanical stresses.
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Affiliation(s)
- Sergey V. Razin
- Institute of Gene Biology, Russian Academy of Sciences, 119334 Moscow, Russia;
- Faculty of Biology, M.V. Lomonosov Moscow State University, 119234 Moscow, Russia
- Correspondence: or
| | - Sergey V. Ulianov
- Institute of Gene Biology, Russian Academy of Sciences, 119334 Moscow, Russia;
- Faculty of Biology, M.V. Lomonosov Moscow State University, 119234 Moscow, Russia
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99809
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Wang ZY, Pergande MR, Ragsdale CW, Cologna SM. Steroid hormones of the octopus self-destruct system. Curr Biol 2022; 32:2572-2579.e4. [PMID: 35561680 DOI: 10.1016/j.cub.2022.04.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/15/2022] [Accepted: 04/14/2022] [Indexed: 02/08/2023]
Abstract
Among all invertebrates, soft-bodied cephalopods have the largest central nervous systems and the greatest brain-to-body mass ratios, yet unlike other big-brained animals, cephalopods are unusually short lived.1-5 Primates and corvids survive for many decades, but shallow-water octopuses, such as the California two-spot octopus (Octopus bimaculoides), typically live for only 1 year.6,7 Lifespan and reproduction are controlled by the principal neuroendocrine center of the octopus: the optic glands, which are functional analogs to the vertebrate pituitary gland.8-10 After mating, females steadfastly brood their eggs, begin fasting, and undergo rapid physiological decline, featuring repeated self-injury and leading to death.11 Removal of the optic glands completely reverses this life history trajectory,10 but the signaling factors underlying this major life transition are unknown. Here, we characterize the major secretions and steroidogenic pathways of the female optic gland using mass spectrometry techniques. We find that at least three pathways are mobilized to increase synthesis of select sterol hormones after reproduction. One pathway generates pregnane steroids, known in other animals to support reproduction.12-16 Two other pathways produce 7-dehydrocholesterol and bile acid intermediates, neither of which were previously known to be involved in semelparity. Our results provide insight into invertebrate cholesterol pathways and confirm a remarkable unity of steroid hormone biology in life history processes across Bilateria.
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Affiliation(s)
- Z Yan Wang
- Department of Neurobiology, University of Chicago, Chicago, IL 60637, USA; Department of Psychology, University of Washington, Seattle, WA 98195, USA; Department of Biology, University of Washington, Seattle, WA 98195, USA.
| | - Melissa R Pergande
- Department of Chemistry, University of Illinois Chicago, Chicago, IL 60607, USA
| | - Clifton W Ragsdale
- Department of Neurobiology, University of Chicago, Chicago, IL 60637, USA
| | - Stephanie M Cologna
- Department of Chemistry, University of Illinois Chicago, Chicago, IL 60607, USA
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99810
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Diabetic oxidative stress-induced telomere damage aggravates periodontal bone loss in periodontitis. Biochem Biophys Res Commun 2022; 614:22-28. [PMID: 35567940 DOI: 10.1016/j.bbrc.2022.04.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 04/08/2022] [Indexed: 12/19/2022]
Abstract
Periodontitis, one of the most common oral complications of diabetes mellitus (DM), causes a reduction in alveolar bone height and loss of alveolar bone mass. It has been shown that DM aggravates the progression of periodontitis, but the mechanism remains inconclusive. The hyperglycemic environment of DM has been proven to generate reactive oxygen species (ROS). Since telomeres, guanine-rich repeats, are highly susceptible to oxidative attack, we speculate that the excessive accumulation of ROS in DM could induce telomere damage resulting in dysfunction of periodontal ligament cells, especially periodontal ligament stem cells (PDLSCs), which reduces the ability of tissue repair and reconstruction in diabetic periodontitis. In this study, our current data revealed that oxidative telomere damage occurred in the periodontal ligaments of diabetic mice. And Micro-CT scans showed reduced alveolar bone height and impaired alveolar bone mass in a diabetic periodontitis model. Next, cultured mouse PDLSCs (mPDLSCs) were treated with the oxidant tert-butyl hydroperoxide (t-BHP) in vitro, as we expected telomere damage was observed and resulted in cellular senescence and dysfunction. Taken together, oxidative stress in DM causes telomere dysfunction and PDLSCs senescence, which influences periodontal bone tissue regeneration and reconstruction and ultimately exacerbates bone loss in periodontitis.
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99811
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Jeon D, Ryu K, Jo S, Kim I, Namkung W. VI-116, A Novel Potent Inhibitor of VRAC with Minimal Effect on ANO1. Int J Mol Sci 2022; 23:ijms23095168. [PMID: 35563558 PMCID: PMC9103758 DOI: 10.3390/ijms23095168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/03/2022] [Accepted: 05/04/2022] [Indexed: 02/01/2023] Open
Abstract
Volume-regulated anion channel (VRAC) is ubiquitously expressed and plays a pivotal role in vertebrate cell volume regulation. A heterologous complex of leucine-rich repeat containing 8A (LRRC8A) and LRRC8B-E constitutes the VRAC, which is involved in various processes such as cell proliferation, migration, differentiation, intercellular communication, and apoptosis. However, the lack of a potent and selective inhibitor of VRAC limits VRAC-related physiological and pathophysiological studies, and most previous VRAC inhibitors strongly blocked the calcium-activated chloride channel, anoctamin 1 (ANO1). In the present study, we performed a cell-based screening for the identification of potent and selective VRAC inhibitors. Screening of 55,000 drug-like small-molecules and subsequent chemical modification revealed 3,3′-((2-hydroxy-3-methoxyphenyl)methylene)bis(4-hydroxy-2H-chromen-2-one) (VI-116), a novel potent inhibitor of VRAC. VI-116 fully inhibited VRAC-mediated I− quenching with an IC50 of 1.27 ± 0.18 μM in LN215 cells and potently blocked endogenous VRAC activity in PC3, HT29 and HeLa cells in a dose-dependent manner. Notably, VI-116 had no effect on intracellular calcium signaling up to 10 μM, which completely inhibited VRAC, and showed high selectivity for VRAC compared to ANO1 and ANO2. However, DCPIB, a VRAC inhibitor, significantly affected ATP-induced increases in intracellular calcium levels and Eact-induced ANO1 activation. In addition, VI-116 showed minimal effect on hERG K+ channel activity up to 10 μM. These results indicate that VI-116 is a potent and selective VRAC inhibitor and a useful research tool for pharmacological dissection of VRAC.
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99812
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Liedmann S, Liu X, Guy CS, Crawford JC, Rodriguez DA, Kuzuoğlu-Öztürk D, Guo A, Verbist KC, Temirov J, Chen MJ, Ruggero D, Zhang H, Thomas PG, Green DR. Localization of a TORC1-eIF4F translation complex during CD8 + T cell activation drives divergent cell fate. Mol Cell 2022; 82:2401-2414.e9. [PMID: 35597236 DOI: 10.1016/j.molcel.2022.04.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 02/22/2022] [Accepted: 04/12/2022] [Indexed: 11/30/2022]
Abstract
Activated CD8+ T lymphocytes differentiate into heterogeneous subsets. Using super-resolution imaging, we found that prior to the first division, dynein-dependent vesicular transport polarized active TORC1 toward the microtubule-organizing center (MTOC) at the proximal pole. This active TORC1 was physically associated with active eIF4F, required for the translation of c-myc mRNA. As a consequence, c-myc-translating polysomes polarized toward the cellular pole proximal to the immune synapse, resulting in localized c-myc translation. Upon division, the TORC1-eIF4A complex preferentially sorted to the proximal daughter cell, facilitating asymmetric c-Myc synthesis. Transient disruption of eIF4A activity at first division skewed long-term cell fate trajectories to memory-like function. Using a genetic barcoding approach, we found that first-division sister cells often displayed differences in transcriptional profiles that largely correlated with c-Myc and TORC1 target genes. Our findings provide mechanistic insights as to how distinct T cell fate trajectories can be established during the first division.
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Affiliation(s)
- Swantje Liedmann
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
| | - Xueyan Liu
- Department of Mathematics, University of New Orleans, New Orleans, LA 70148, USA
| | - Clifford S Guy
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jeremy Chase Crawford
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Diego A Rodriguez
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Duygu Kuzuoğlu-Öztürk
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Ao Guo
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Katherine C Verbist
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jamshid Temirov
- Department of Cell & Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Mark J Chen
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Davide Ruggero
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Hui Zhang
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Paul G Thomas
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Douglas R Green
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
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99813
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Acosta-Rodríguez V, Rijo-Ferreira F, Izumo M, Xu P, Wight-Carter M, Green CB, Takahashi JS. Circadian alignment of early onset caloric restriction promotes longevity in male C57BL/6J mice. Science 2022; 376:1192-1202. [PMID: 35511946 PMCID: PMC9262309 DOI: 10.1126/science.abk0297] [Citation(s) in RCA: 139] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Caloric restriction (CR) prolongs lifespan, yet the mechanisms by which it does so remain poorly understood. Under CR, mice self-impose chronic cycles of 2-hour-feeding and 22-hour-fasting, raising the question whether calories, fasting, or time of day are causal. We show that 30%-CR is sufficient to extend lifespan 10%; however, a daily fasting interval and circadian-alignment of feeding act together to extend lifespan 35% in male C57BL/6J mice. These effects are independent of body weight. Aging induces widespread increases in gene expression associated with inflammation and decreases in expression of genes encoding components of metabolic pathways in liver from ad lib fed mice. CR at night ameliorates these aging-related changes. Thus, circadian interventions promote longevity and provide a perspective to further explore mechanisms of aging. Timed caloric restriction at night enhances longevity.
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Affiliation(s)
- Victoria Acosta-Rodríguez
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Filipa Rijo-Ferreira
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Mariko Izumo
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Pin Xu
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Mary Wight-Carter
- Animal Resources Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Carla B Green
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Joseph S Takahashi
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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99814
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Zhang T, Li SM, Li YN, Cao JL, Xue H, Wang C, Jin CH. Atractylodin Induces Apoptosis and Inhibits the Migration of A549 Lung Cancer Cells by Regulating ROS-Mediated Signaling Pathways. Molecules 2022; 27:molecules27092946. [PMID: 35566297 PMCID: PMC9103034 DOI: 10.3390/molecules27092946] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/21/2022] [Accepted: 05/03/2022] [Indexed: 12/18/2022] Open
Abstract
Atractylodin (ATR) has anticancer effects on some tumor cells by inducing apoptosis, but its mechanism in lung cancer remains unclear. This study investigates the inhibitory effect of ATR on A549 lung cancer cells. Cell viability was detected by the Cell Counting Kit-8 assay, and results showed that ATR could significantly inhibit the proliferation of A549 cells. Apoptosis was detected by Annexin V-FITC/PI staining, and apoptosis rate and mitochondrial membrane potential were detected by flow cytometry. Results showed that the effect of ATR on the apoptosis of A549 cells was negatively correlated with the change in mitochondrial membrane potential. Western blot analysis showed that ATR regulated apoptosis induced by mitogen-activated protein kinase, signal transducer and activator of transcription 3, and nuclear factor kappa B signaling pathways. Analyses of reactive oxygen species (ROS), cell cycle, and cell migration showed that ATR induced intracellular ROS accumulation as an initiation signal to induce cell cycle arrest regulated by the AKT signaling pathway and cell migration inhibition regulated by the Wnt signaling pathway. Results showed that ATR can inhibit cell proliferation, induce cell apoptosis, induce cell cycle arrest, and inhibit the migration of A549 cells (p < 0.05 was considered statistically significant, * p < 0.05, ** p < 0.01 and *** p < 0.001).
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Affiliation(s)
- Tong Zhang
- College of Life Science & Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (T.Z.); (Y.-N.L.); (J.-L.C.); (H.X.)
| | - Shu-Mei Li
- Hemodialysis Center, Daqing Oilfield General Hospital, Daqing 163001, China;
| | - Yan-Nan Li
- College of Life Science & Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (T.Z.); (Y.-N.L.); (J.-L.C.); (H.X.)
| | - Jing-Long Cao
- College of Life Science & Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (T.Z.); (Y.-N.L.); (J.-L.C.); (H.X.)
| | - Hui Xue
- College of Life Science & Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (T.Z.); (Y.-N.L.); (J.-L.C.); (H.X.)
| | - Chang Wang
- College of Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Correspondence: (C.W.); (C.-H.J.)
| | - Cheng-Hao Jin
- College of Life Science & Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (T.Z.); (Y.-N.L.); (J.-L.C.); (H.X.)
- National Coarse Cereals Engineering Research Center, Daqing 163319, China
- College of Food Science & Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China
- Correspondence: (C.W.); (C.-H.J.)
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99815
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Xie A, Wang P, Chen D, Zhang H. Aberrant ARMCX1 Expression Is an Independent Predictor of Poor Prognosis in Gastric Cancer. JOURNAL OF ONCOLOGY 2022; 2022:9348917. [PMID: 35571487 PMCID: PMC9098325 DOI: 10.1155/2022/9348917] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/18/2022] [Indexed: 02/05/2023]
Abstract
ARMCX1 (Armadillo repeat containing X-linked 1) is identified to be the novel tumor suppressor gene related to multiple tumor types. Nonetheless, its effect on gastric cancer (GC) is still poorly understood. The present work determined ARMCX1 level within GC and the relation with clinicopathological characteristics. This work also collected relevant information in The Cancer Genome Atlas (TCGA) database for investigating associations of ARMCX1 with clinicopathologic variables and then validated in our GC cohort. Receiver operating characteristic (ROC) curves were plotted for assessing whether ARMCX1 expression was significant in diagnosing GC. Kaplan-Meier (KM) and Cox regression analyses were conducted for assessing clinicopathological characteristics associated with overall survival (OS) of GC cases. The data from the Human Protein Atlas (HPA) and Gene Expression Omnibus (GEO) databases was also analyzed for further validation, and biological processes (BPs) were identified by gene set enrichment analysis (GSEA). GC tissues showed markedly decreased ARMCX1 level relative to healthy counterparts (P < 0.001). Interestingly, ARMCX1 upregulation predicted low differentiation, poor OS, increased invasion, and late tumor stage. In addition, the area under ROC curve (AUC) and P value were 0.747 and <0.001, separately. Cases showing ARMCX1 upregulation showed significantly poor prognostic outcome compared with patients showing downregulation (P = 0.007). Furthermore, multivariate analysis showed that ARMCX1 upregulation independently predicted the risk of OS (P = 0.0017, hazard ratio, 1.089). GSEA analysis identified that several cancer-related pathways, such as focal adhesion, ECM receptor interaction, JAK/STAT, melanoma, WNT, and cancer, were enriched in GCs. We conclude that ARMCX1 serves as the possibly independent biomarker to diagnose and predict GC prognostic outcome.
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Affiliation(s)
- Aosi Xie
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515043, China
| | - Puyu Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Shantou University Medical College, Shantou 515043, China
| | - Diqun Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515043, China
| | - Hongxia Zhang
- Health Care Center, The First Affiliated Hospital of Shantou University Medical College, Shantou 515043, China
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99816
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Golden NL, Foley MK, Kim Guisbert KS, Guisbert E. Divergent regulatory roles of NuRD chromatin remodeling complex subunits GATAD2 and CHD4 in Caenorhabditis elegans. Genetics 2022; 221:iyac046. [PMID: 35323946 PMCID: PMC9071545 DOI: 10.1093/genetics/iyac046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 03/11/2022] [Indexed: 11/12/2022] Open
Abstract
During proteotoxic stress, a pathway known as the heat shock response is induced to maintain protein-folding homeostasis or proteostasis. Previously, we identified the Caenorhabditis elegans GATAD2 ortholog, dcp-66, as a novel regulator of the heat shock response. Here, we extend these findings to show that dcp-66 positively regulates the heat shock response at the cellular, molecular, and organismal levels. As GATAD2 is a subunit of the nucleosome remodeling and deacetylase chromatin remodeling complex, we examined other nucleosome remodeling and deacetylase subunits and found that the let-418 (CHD4) nucleosome repositioning core also regulates the heat shock response. However, let-418 acts as a negative regulator of the heat shock response, in contrast to positive regulation by dcp-66. The divergent effects of these two nucleosome remodeling and deacetylase subunits extend to the regulation of other stress responses including oxidative, genotoxic, and endoplasmic reticulum stress. Furthermore, a transcriptomic approach reveals additional divergently regulated pathways, including innate immunity and embryogenesis. Taken together, this work establishes new insights into the role of nucleosome remodeling and deacetylase subunits in organismal physiology. We incorporate these findings into a molecular model whereby different mechanisms of recruitment to promoters can result in the divergent effects of nucleosome remodeling and deacetylase subunits.
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Affiliation(s)
- Nicole L Golden
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USA
| | - Michaela K Foley
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USA
| | - Karen S Kim Guisbert
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USA
| | - Eric Guisbert
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USA
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99817
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Rodriguez-Crespo D, Nanchen M, Rajopadhye S, Wicky C. The zinc-finger transcription factor LSL-1 is a major regulator of the germline transcriptional program in Caenorhabditis elegans. Genetics 2022; 221:iyac039. [PMID: 35262739 PMCID: PMC9071529 DOI: 10.1093/genetics/iyac039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/03/2022] [Indexed: 11/13/2022] Open
Abstract
Specific gene transcriptional programs are required to ensure the proper proliferation and differentiation processes underlying the production of specialized cells during development. Gene activity is mainly regulated by the concerted action of transcription factors and chromatin proteins. In the nematode Caenorhabditis elegans, mechanisms that silence improper transcriptional programs in germline and somatic cells have been well studied, however, how are tissue-specific sets of genes turned on is less known. LSL-1 is herein defined as a novel crucial transcriptional regulator of germline genes in C. elegans. LSL-1 is first detected in the P4 blastomere and remains present at all stages of germline development, from primordial germ cell proliferation to the end of meiotic prophase. lsl-1 loss-of-function mutants exhibit many defects including meiotic prophase progression delay, a high level of germline apoptosis, and production of almost no functional gametes. Transcriptomic analysis and ChIP-seq data show that LSL-1 binds to promoters and acts as a transcriptional activator of germline genes involved in various processes, including homologous chromosome pairing, recombination, and genome stability. Furthermore, we show that LSL-1 functions by antagonizing the action of the heterochromatin proteins HPL-2/HP1 and LET-418/Mi2 known to be involved in the repression of germline genes in somatic cells. Based on our results, we propose LSL-1 to be a major regulator of the germline transcriptional program during development.
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Affiliation(s)
| | - Magali Nanchen
- Department of Biology, University of Fribourg, Fribourg 1700, Switzerland
| | - Shweta Rajopadhye
- Department of Biology, University of Fribourg, Fribourg 1700, Switzerland
| | - Chantal Wicky
- Department of Biology, University of Fribourg, Fribourg 1700, Switzerland
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99818
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Sun Z, Shi S, Guan P, Liu B. Construction of heteroaryl-bridged NIR AIEgens for specific imaging of lipid droplets and its application in photodynamic therapy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120946. [PMID: 35149481 DOI: 10.1016/j.saa.2022.120946] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/30/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
As a kind of subcellular organelle, lipid droplets (LDs) play a critical role in the body's normal metabolism. LDs have gained increasing attention as a fluorescent photodynamic target site. Near-infrared (NIR) organic light-emitting luminescent materials, with aggregation-induced emission (AIE)-active feature, preeminent LD-imaging ability, and effective reactive oxygen species (ROS) production property, have been widely used for photodynamic therapy (PDT) in diagnostic therapeutics, but its application remains challenging. In the present work, three novel NIR organic compounds with AIE-active feature, namely, TPET-Is, TPET-Fu, and TPEF-Is, were developed and synthesized. These heteroaryl-bridged molecules possess a donor-donor-π-acceptor structure and strong intramolecular charge transfer character. These AIEgens are capable of high-fidelity LD imaging in living cells (Pearson's coefficient values: 0.94, 0.96, 0.97) due to their biocompatibility, good photostability, and strong lipophilicity (LogP values: 9.39, 7.89, 8.03), respectively. Moreover, they can be also applied in bright imaging the LDs of oil-rich plant tissues, such as those of sunflower seeds. The respective AIEgens TPET-Fu of these compounds can also produce ROS in the condition of white light to effectively kill live Hela cells. The present study thus provides a potential strategy through heteroaryl-bridged molecular engineering for LD-targeted imaging and PDT application.
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Affiliation(s)
- Zhanguo Sun
- Key Laboratory of Chemical Biology and Molecular Engineering, Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China; Institute of Carbon Materials Science, Shanxi DaTong University, DaTong, Shanxi Province 037009, China
| | - Shuman Shi
- Key Laboratory of Chemical Biology and Molecular Engineering, Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Pengli Guan
- Key Laboratory of Chemical Biology and Molecular Engineering, Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Bin Liu
- Key Laboratory of Chemical Biology and Molecular Engineering, Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
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99819
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Li Y, Chen C, Diao M, Wei Y, Zhu Y, Hu W. Gene model-related m6A expression levels predict the risk of preeclampsia. BMC Med Genomics 2022; 15:103. [PMID: 35513840 PMCID: PMC9069853 DOI: 10.1186/s12920-022-01254-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/27/2022] [Indexed: 11/30/2022] Open
Abstract
Background This is the first study to explore the potential functions and expression patterns of RNA N6-methyladenosine (m6A) and potential related genes in preeclampsia. Methods We identified two m6A modification patterns through unsupervised cluster analysis and validated them by principal component analysis. We quantified the relative abundance of specific infiltrating immunocytes using single-sample gene set enrichment analysis (ssGSEA) and the Wilcoxon test. To screen hub genes related to m6A regulators, we performed weighted gene coexpression network analysis. Functional enrichment analysis was conducted for differential signalling pathways and cellular processes. Preeclampsia patients were grouped by consensus clustering based on differentially expressed hub genes and the relationship between different gene-mediated classifications and clinical features. Results Two m6A clusters in preeclampsia, cluster A and cluster B, were determined based on the expression of 17 m6A modification regulators; ssGSEA revealed seven significantly different immune cell subtypes between the two clusters. A total of 1393 DEGs and nine potential m6A-modified hub genes were screened. We divided the patients into two groups based on the expression of these nine genes. We found that almost all the patients in m6A cluster A were classified into hub gene cluster 1 and that a lower gestational age may be associated with more m6A-associated events. Conclusions This study revealed that hub gene-mediated classification is consistent with m6A modification clusters for predicting the clinical characteristics of patients with preeclampsia. Our results provide new insights into the molecular mechanisms of preeclampsia. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-022-01254-4.
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Affiliation(s)
- Yiwei Li
- Department of Critical Care Medicine, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, 216 Huansha Road, Hangzhou, 310006, Zhejiang, China
| | - Can Chen
- Department of Hematology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, 216 Huansha Road, Hangzhou, 310006, Zhejiang, China
| | - Mengyuan Diao
- Department of Critical Care Medicine, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, 216 Huansha Road, Hangzhou, 310006, Zhejiang, China
| | - Yanli Wei
- Department of Critical Care Medicine, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, 216 Huansha Road, Hangzhou, 310006, Zhejiang, China
| | - Ying Zhu
- Department of Critical Care Medicine, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, 216 Huansha Road, Hangzhou, 310006, Zhejiang, China.
| | - Wei Hu
- Department of Critical Care Medicine, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, 216 Huansha Road, Hangzhou, 310006, Zhejiang, China.
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99820
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Torii S, Rakic P. Tracking the Activation of Heat Shock Signaling in Cellular Protection and Damage. Cells 2022; 11:1561. [PMID: 35563865 PMCID: PMC9104565 DOI: 10.3390/cells11091561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/02/2022] [Accepted: 05/02/2022] [Indexed: 01/27/2023] Open
Abstract
Heat Shock (HS) signaling is activated in response to various types of cellular stress. This activation serves to protect cells from immediate threats in the surrounding environment. However, activation of HS signaling occurs in a heterogeneous manner within each cell population and can alter the epigenetic state of the cell, ultimately leading to long-term abnormalities in body function. Here, we summarize recent research findings obtained using molecular and genetic tools to track cells where HS signaling is activated. We then discuss the potential further applications of these tools, their limitations, and the necessary caveats in interpreting data obtained with these tools.
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Affiliation(s)
| | - Pasko Rakic
- Department of Neuroscience, School of Medicine, Yale University, New Haven, CT 06510, USA;
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99821
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Gradual Stress-Relaxation of Hydrogel Regulates Cell Spreading. Int J Mol Sci 2022; 23:ijms23095170. [PMID: 35563561 PMCID: PMC9100461 DOI: 10.3390/ijms23095170] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 01/27/2023] Open
Abstract
There is growing evidence that the mechanical properties of extracellular matrices (ECMs), including elasticity and stress-relaxation, greatly influence the function and form of the residing cells. However, the effects of elasticity and stress-relaxation are often correlated, making the study of the effect of stress-relaxation on cellular behaviors difficult. Here, we designed a hybrid network hydrogel with a controllable stress-relaxation gradient and a constant elasticity. The hydrogel is crosslinked by covalent bonds and dynamic peptide-metal ion coordination interactions. The stress-relaxation gradient is controlled by spatially controlling the coordination and covalent crosslinker ratios. The different parts of the hydrogel exhibit distinct stress-relaxation amplitudes but the have same stress-relaxation timescale. Based on this hydrogel, we investigate the influence of hydrogel stress-relaxation on cell spreading. Our results show that the spreading of cells is suppressed at an increasing stress-relaxation amplitude with a fixed elasticity and stress-relaxation timescale. Our study provides a universal route to tune the stress-relaxation of hydrogels without changing their components and elasticity, which may be valuable for systematic investigations of the stress-relaxation gradient in cell cultures and organoid constructions.
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99822
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Zhou J, Hu Y, Zhu W, Nie C, Zhao W, Faje AT, Labelle KE, Swearingen B, Lee H, Hedley-Whyte ET, Zhang X, Jones PS, Miller KK, Klibanski A, Zhou Y, Soberman RJ. Sprouting Angiogenesis in Human Pituitary Adenomas. Front Oncol 2022; 12:875219. [PMID: 35600354 PMCID: PMC9117625 DOI: 10.3389/fonc.2022.875219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/05/2022] [Indexed: 11/26/2022] Open
Abstract
Introduction Angiogenesis in pituitary tumors is not fully understood, and a better understanding could help inform new pharmacologic therapies, particularly for aggressive pituitary tumors. Materials and Methods 219 human pituitary tumors and 12 normal pituitary glands were studied. Angiogenic genes were quantified by an angiogenesis qPCR array and a TaqMan probe-based absolute qPCR. Angiogenesis inhibition in pituitary tumors was evaluated in vitro with the endothelial tube formation assay and in vivo in RbΔ19 mice. Results 71 angiogenic genes, 40 of which are known to be involved in sprouting angiogenesis, were differentially expressed in pituitary tumors. Expression of endothelial markers CD31, CD34, and ENG was significantly higher in pituitary tumors, by 5.6, 22.3, and 8.2-fold, respectively, compared to in normal pituitary tissue. There was no significant difference in levels of the lymphatic endothelial marker LYVE1 in pituitary tumors compared with normal pituitary gland tissue. Pituitary tumors also expressed significantly higher levels of angiogenesis growth factors, including VEGFA (4.2-fold), VEGFB (2.2), VEGFC (19.3), PGF (13.4), ANGPT2 (9.2), PDGFA (2.7), PDGFB (10.5) and TGFB1 (3.8) compared to normal pituitary tissue. Expression of VEGFC and PGF was highly correlated with the expression of endothelial markers in tumor samples, including CD31, CD34, and ENG (endoglin, a co-receptor for TGFβ). Furthermore, VEGFR inhibitors inhibited angiogenesis induced by human pituitary tumors and prolonged survival of RbΔ19 mice. Conclusion Human pituitary tumors are characterized by more active angiogenesis than normal pituitary gland tissue in a manner consistent with sprouting angiogenesis. Angiogenesis in pituitary tumors is regulated mainly by PGF and VEGFC, not VEGFA and VEGFB. Angiogenesis inhibitors, such as the VEGFR2 inhibitor cabozantinib, may merit further investigation as therapies for aggressive human pituitary tumors.
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Affiliation(s)
- Jie Zhou
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Yaomin Hu
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Wende Zhu
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Chuansheng Nie
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Wenxiu Zhao
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Alexander T. Faje
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Kay E. Labelle
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Brooke Swearingen
- Neurosurgery Department, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Hang Lee
- Biostatistics Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - E. Tessa Hedley-Whyte
- Department of Pathology (Neuropathology), Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Xun Zhang
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Pamela S. Jones
- Neurosurgery Department, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Karen K. Miller
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Anne Klibanski
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Yunli Zhou
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
- *Correspondence: Yunli Zhou,
| | - Roy J. Soberman
- Nephrology Division, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
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99823
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Geurs S, Clarisse D, Baele F, Franceus J, Desmet T, De Bosscher K, D'hooghe M. Identification of mercaptoacetamide-based HDAC6 inhibitors via a lean inhibitor strategy: screening, synthesis, and biological evaluation. Chem Commun (Camb) 2022; 58:6239-6242. [PMID: 35510683 DOI: 10.1039/d2cc01550a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Non-selective inhibition of different histone deacetylase enzymes by hydroxamic acid-based drugs causes severe side effects when used as a (long-term) cancer treatment. In this work, we searched for a potent zinc-binding group able to replace the contested hydroxamic acid by employing a lean inhibitor strategy. This instructed the synthesis of a set of HDAC6-selective inhibitors containing the more desirable mercaptoacetamide moiety. Biological evaluation of these new compounds showed an IC50 in the nanomolar range, dose-dependent HDAC6 inhibition in MM1.S cells and improved genotoxicity results, rendering these new inhibitors valuable hits for applications even beyond oncology.
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Affiliation(s)
- Silke Geurs
- SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium. .,Translational Nuclear Receptor Research, VIB-UGent Center for Medical Biotechnology, Technologiepark-Zwijnaarde 75, FSVMII, Zwijnaarde, Belgium
| | - Dorien Clarisse
- Translational Nuclear Receptor Research, VIB-UGent Center for Medical Biotechnology, Technologiepark-Zwijnaarde 75, FSVMII, Zwijnaarde, Belgium.,Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, FSVMII, Zwijnaarde, Belgium
| | - Freya Baele
- SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
| | - Jorick Franceus
- Center for Synthetic Biology (CSB), Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Tom Desmet
- Center for Synthetic Biology (CSB), Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Karolien De Bosscher
- Translational Nuclear Receptor Research, VIB-UGent Center for Medical Biotechnology, Technologiepark-Zwijnaarde 75, FSVMII, Zwijnaarde, Belgium.,Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, FSVMII, Zwijnaarde, Belgium
| | - Matthias D'hooghe
- SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
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99824
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Jia H, Sun Y, Yao W, Chen Z, Yang S, Wang C, Lu S. A novel deletion mutation accompanied by a point mutation in Lamin A/C gene: Screened from a dilated cardiomyopathy family. Perfusion 2022; 38:826-836. [PMID: 35514053 DOI: 10.1177/02676591221090587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND There are 30%-40% of patients with dilated cardiomyopathy (DCM) having genetic causes, among which Lamin A and C gene (LMNA) mutation is the second most frequent DCM-related mutation, and Lamin A/C may be involved in the pathogenesis of DCM through the regulation of gene transcription or the direct effect of cell structure. Methods: Echocardiography and electrocardiogram were used to diagnose DCM and arrhythmia in a DCM family. Then, linked mutations on LMNA were screened out by high-throughput sequencing and verified by Sanger sequencing in all research individuals. Meanwhile, Human Genome Variation Society (HGVS) and Integrative Genomics Viewer (IGV) were used to analyse the characteristics of the mutated Lamin A/C protein. Finally, mutated-type and wild-type LMNA plasmid was transfected into AC-16 cardiomyocytes with the form of a lentivirus vector, and its effect on nucleus and actin was studied by immunofluorescence detection. RESULTS In this study, we found a new frame-shifted mutation of LMNA (p.Ser414Alafs*66) linked with another point mutation from a DCM family by using High-throughput sequencing, and this deletion mutation led to a truncation of Lamin A/C. By analysing the clinical characteristics of this DCM family, we found that all DCM patients with arrhythmia were carriers of this co-segregation mutation. In the cytological experiment, we found that the mutated-type transfections showed weaker fluorescent intensities on both actin and cell nucleus. CONCLUSIONS A co-segregation mutation of LMNA (Point mutation chr1 156107548 c.1712 G>A and truncated frame-shifted mutation chr1 156106086 c.1240delA) was found from a DCM family, and this type of mutation could participate in the pathogenesis of DCM by affecting the expression of actin.
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Affiliation(s)
- Hao Jia
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yongxin Sun
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wangchao Yao
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhenhang Chen
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shouguo Yang
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chunsheng Wang
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shuyang Lu
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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99825
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Zhu D, Han F, Sun L, Agnihotri SK, Hu Y, Büeler H. Loss of PTEN-Induced Kinase 1 Regulates Oncogenic Ras-Driven Tumor Growth By Inhibiting Mitochondrial Fission. Front Oncol 2022; 12:893396. [PMID: 35600352 PMCID: PMC9117651 DOI: 10.3389/fonc.2022.893396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/08/2022] [Indexed: 01/11/2023] Open
Abstract
Mitochondrial metabolism and dynamics (fission and fusion) critically regulate cell survival and proliferation, and abnormalities in these pathways are implicated in both neurodegenerative disorders and cancer. Mitochondrial fission is necessary for the growth of mutant Ras-dependent tumors. Here, we investigated whether loss of PTEN-induced kinase 1 (PINK1) - a mitochondrial kinase linked to recessive familial Parkinsonism - affects the growth of oncogenic Ras-induced tumor growth in vitro and in vivo. We show that RasG12D-transformed embryonic fibroblasts (MEFs) from PINK1-deficient mice display reduced growth in soft agar and in nude mice, as well as increased necrosis and decreased cell cycle progression, compared to RasG12D-transformed MEFs derived from wildtype mice. PINK1 re-expression (overexpression) at least partially rescues these phenotypes. Neither PINK1 deletion nor PINK1 overexpression altered Ras expression levels. Intriguingly, PINK1-deficient Ras-transformed MEFs exhibited elongated mitochondria and altered DRP1 phosphorylation, a key event in regulating mitochondrial fission. Inhibition of DRP1 diminished PINK1-regulated mitochondria morphological changes and tumor growth suggesting that PINK1 deficiency primarily inhibits Ras-driven tumor growth through disturbances in mitochondrial fission and associated cell necrosis and cell cycle defects. Moreover, we substantiate the requirement of PINK1 for optimal growth of Ras-transformed cells by showing that human HCT116 colon carcinoma cells (carrying an endogenous RasG13D mutation) with CRISPR/Cas9-introduced PINK1 gene deletions also show reduced mitochondrial fission and decreased growth. Our results support the importance of mitochondrial function and dynamics in regulating the growth of Ras-dependent tumor cells and provide insight into possible mechanisms underlying the lower incidence of cancers in Parkinson’s disease and other neurodegenerative disorders.
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Affiliation(s)
| | | | | | | | - Ying Hu
- *Correspondence: Hansruedi Büeler, ; Ying Hu,
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99826
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Zhao J, Luo Z. Discovery of Raf Family Is a Milestone in Deciphering the Ras-Mediated Intracellular Signaling Pathway. Int J Mol Sci 2022; 23:ijms23095158. [PMID: 35563547 PMCID: PMC9101324 DOI: 10.3390/ijms23095158] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 01/27/2023] Open
Abstract
The Ras-Raf-MEK-ERK signaling pathway, the first well-established MAPK pathway, plays essential roles in cell proliferation, survival, differentiation and development. It is activated in over 40% of human cancers owing to mutations of Ras, membrane receptor tyrosine kinases and other oncogenes. The Raf family consists of three isoforms, A-Raf, B-Raf and C-Raf. Since the first discovery of a truncated mutant of C-Raf as a transforming oncogene carried by a murine retrovirus, forty years of extensive studies have provided a wealth of information on the mechanisms underlying the activation, regulation and biological functions of the Raf family. However, the mechanisms by which activation of A-Raf and C-Raf is accomplished are still not completely understood. In contrast, B-Raf can be easily activated by binding of Ras-GTP, followed by cis-autophosphorylation of the activation loop, which accounts for the fact that this isoform is frequently mutated in many cancers, especially melanoma. The identification of oncogenic B-Raf mutations has led to accelerated drug development that targets Raf signaling in cancer. However, the effort has not proved as effective as anticipated, inasmuch as the mechanism of Raf activation involves multiple steps, factors and phosphorylation of different sites, as well as complex interactions between Raf isoforms. In this review, we will focus on the physiological complexity of the regulation of Raf kinases and their connection to the ERK phosphorylation cascade and then discuss the role of Raf in tumorigenesis and the clinical application of Raf inhibitors in the treatment of cancer.
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Affiliation(s)
- Jingtong Zhao
- Queen Mary School, Nanchang University, Nanchang 330031, China;
| | - Zhijun Luo
- Queen Mary School, Nanchang University, Nanchang 330031, China;
- Provincial Key Laboratory of Tumor Pathogens and Molecular Pathology, Nanchang University, Nanchang 330031, China
- NCU-QMUL Joint Research Institute of Precision Medical Science, Nanchang 330031, China
- Correspondence:
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99827
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Shao Y, Fu J. Engineering multiscale structural orders for high-fidelity embryoids and organoids. Cell Stem Cell 2022; 29:722-743. [PMID: 35523138 PMCID: PMC9097334 DOI: 10.1016/j.stem.2022.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Embryoids and organoids hold great promise for human biology and medicine. Herein, we discuss conceptual and technological frameworks useful for developing high-fidelity embryoids and organoids that display tissue- and organ-level phenotypes and functions, which are critically needed for decoding developmental programs and improving translational applications. Through dissecting the layers of inputs controlling mammalian embryogenesis, we review recent progress in reconstructing multiscale structural orders in embryoids and organoids. Bioengineering tools useful for multiscale, multimodal structural engineering of tissue- and organ-level cellular organization and microenvironment are also discussed to present integrative, bioengineering-directed approaches to achieve next-generation, high-fidelity embryoids and organoids.
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Affiliation(s)
- Yue Shao
- Institute of Biomechanics and Medical Engineering, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China; State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan 650500, China.
| | - Jianping Fu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Department of Cell & Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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99828
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Wang Q, Daiß JL, Xu Y, Engel C. Snapshots of RNA polymerase III in action - A mini review. Gene 2022; 821:146282. [PMID: 35149153 DOI: 10.1016/j.gene.2022.146282] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 01/20/2022] [Accepted: 02/03/2022] [Indexed: 11/04/2022]
Abstract
RNA polymerase (Pol) III is responsible for the transcription of tRNAs, 5S rRNA, U6 snRNA, and other non-coding RNAs. Transcription factors such as TFIIIA, -B, -C, SNAPc, and Maf1 are required for promoter recognition, promoter opening, and Pol III activity regulation. Recent developments in cryo-electron microscopy and advanced purification approaches for endogenous multi-subunit complexes accelerated structural studies resulting in detailed structural insights which allowed an in-depth understanding of the molecular mechanisms underlying Pol III transcription. Here, we summarize structural data on Pol III and its regulating factors providing a three-dimensional framework to guide further analysis of RNA polymerase III.
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Affiliation(s)
- Qianmin Wang
- State Key Laboratory of Oncogenes and Related Genes, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Institute of Precision Medicine, Shanghai, China; Present address: Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Julia L Daiß
- Regensburg Center for Biochemistry, University of Regensburg, 93053, Regensburg, Germany
| | - Youwei Xu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
| | - Christoph Engel
- Regensburg Center for Biochemistry, University of Regensburg, 93053, Regensburg, Germany.
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99829
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LINC00922 promotes deterioration of gastric cancer. PLoS One 2022; 17:e0267798. [PMID: 35511773 PMCID: PMC9070913 DOI: 10.1371/journal.pone.0267798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 04/12/2022] [Indexed: 12/24/2022] Open
Abstract
Several studies have demonstrated the association of lncRNAs with a variety of cancers. Here, we explored the role of LINC00922 in gastric cancer (GC) using bioinformatics approaches and in vitro experiments. We examined the expression of LINC00922 and the prognosis of GC patients based on data from The Cancer Genome Atlas (TCGA) and Gene Expression Profiling Interactive Analysis (GEPIA). LINC00922-related genes were identified by the Multi Experiment Matrix (MEM) database and The Atlas of Noncoding RNAs in Cancer (TANRIC), followed by Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and protein-protein interaction analysis. The significance of LINC00922 in cell proliferation, apoptosis, invasion and migration was assessed by MTT assay, flow cytometry, Transwell assay and wound-healing assay. The expression of LINC00922 was increased in GC tissues compared with adjacent non-tumor tissues, and increased LINC00922 expression was correlated with poor overall survival and disease-free survival. In addition, 336 overlapping genes were identified by the MEM database and TANRIC and found to be involved in GC-related biological processes, such as cell adhesion and migration, as well as TGF-β signaling. In the protein-protein interaction network, hub genes, such as FSTL3 and LAMC1, were identified. LINC00922 overexpression significantly promoted cell proliferation and invasion in vitro, whereas LINC00922 knockdown exerted opposite effects. In summary, our findings indicate that LINC00922 is overexpressed in GC tissues, suggesting that it might play a role in the development and progression of GC, and thus, it might serve as a prognostic indicator of GC.
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99830
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Cino EA, Tieleman DP. Curvature-based sorting of eight lipid types in asymmetric buckled plasma membrane models. Biophys J 2022; 121:2060-2068. [PMID: 35524412 DOI: 10.1016/j.bpj.2022.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/13/2022] [Accepted: 05/02/2022] [Indexed: 11/02/2022] Open
Abstract
Curvature is a fundamental property of biological membranes and has essential roles in cellular function. Bending of membranes can be induced by their lipid and protein compositions, as well as peripheral proteins, such as those that make up the cytoskeleton. An important aspect of membrane function is the grouping of lipid species into microdomains, or rafts, which serve as platforms for specific biochemical processes. The fluid mosaic model of membranes has evolved to recognize the importance of curvature and leaflet asymmetry, and there are efforts towards evaluating their functional roles. This work investigates the effect of curvature on the sorting of lipids in buckled asymmetric bilayers containing eight lipid types, approximating an average mammalian plasma membrane, through coarse-grained (CG) molecular dynamics (MD) simulations with the Martini force field. The simulations reveal that i) leaflet compositional asymmetry can induce curvature asymmetry, ii) lipids are sorted by curvature to different extents, and iii) curvature-based partitioning trends show moderate to strong correlations with lipid molecular volumes and head to tail bead ratios, respectively. The findings provide unique insights into the role of curvature in membrane organization, and the curvature-based sorting trends should be useful references for later investigations, and potentially interpreting the functional roles of specific lipids.
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Affiliation(s)
- Elio A Cino
- Centre for Molecular Simulation and Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - D Peter Tieleman
- Centre for Molecular Simulation and Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.
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99831
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KLF16 enhances stress tolerance of colorectal carcinomas by modulating nucleolar homeostasis and translational reprogramming. Mol Ther 2022; 30:2828-2843. [PMID: 35524408 PMCID: PMC9372374 DOI: 10.1016/j.ymthe.2022.04.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 04/25/2022] [Accepted: 04/29/2022] [Indexed: 12/22/2022] Open
Abstract
Translational reprogramming is part of the unfolded protein response (UPR) during endoplasmic reticulum (ER) stress, which acts to the advantage of cancer growth and development in different stress conditions. But the mechanism of ER stress-related translational reprogramming in colorectal carcinoma (CRC) progression remains unclear. Here, we identified that Krüppel-Like Factor 16 (KLF16) can promote CRC progression and stress tolerance through translational reprogramming. The expression of KLF16 was upregulated in CRC tissues and associated with poor prognosis for CRC patients. We found that ER stress inducers can recruit KLF16 to the nucleolus and increase its interaction with two essential proteins for nucleolar homeostasis, nucleophosmin1 (NPM1) and fibrillarin (FBL). Moreover, knockdown of KLF16 can dysregulate nucleolar homeostasis in CRC cells. Translation-reporter system and polysome profiling assays further showed that KLF16 can effectively promote cap-independent translation of ATF4, which can enhance ER-phagy and proliferation of CRC cells. Overall, our study unveils a previously unrecognized role for KLF16 as an ER stress regulator through mediating translational reprogramming to enhance stress tolerance of CRC cells and provides a potential therapeutic vulnerability.
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99832
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Hong S, Yoon J, Cha J, Ahn J, Mandakhbayar N, Park JH, Im J, Jin G, Kim M, Knowles JC, Lee H, Lee J, Kim H. Hyperelastic, shape‐memorable, and ultra‐cell‐adhesive degradable polycaprolactone‐polyurethane copolymer for tissue regeneration. Bioeng Transl Med 2022; 7:e10332. [PMID: 36176615 PMCID: PMC9472029 DOI: 10.1002/btm2.10332] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/04/2022] [Accepted: 04/13/2022] [Indexed: 12/05/2022] Open
Abstract
Novel polycaprolactone‐based polyurethane (PCL‐PU) copolymers with hyperelasticity, shape‐memory, and ultra‐cell‐adhesion properties are reported as clinically applicable tissue‐regenerative biomaterials. New isosorbide derivatives (propoxylated or ethoxylated ones) were developed to improve mechanical properties by enhanced reactivity in copolymer synthesis compared to the original isosorbide. Optimized PCL‐PU with propoxylated isosorbide exhibited notable mechanical performance (50 MPa tensile strength and 1150% elongation with hyperelasticity under cyclic load). The shape‐memory effect was also revealed in different forms (film, thread, and 3D scaffold) with 40%–80% recovery in tension or compression mode after plastic deformation. The ultra‐cell‐adhesive property was proven in various cell types which were reasoned to involve the heat shock protein‐mediated integrin (α5 and αV) activation, as analyzed by RNA sequencing and inhibition tests. After the tissue regenerative potential (muscle and bone) was confirmed by the myogenic and osteogenic responses in vitro, biodegradability, compatible in vivo tissue response, and healing capacity were investigated with in vivo shape‐memorable behavior. The currently exploited PCL‐PU, with its multifunctional (hyperelastic, shape‐memorable, ultra‐cell‐adhesive, and degradable) nature and biocompatibility, is considered a potential tissue‐regenerative biomaterial, especially for minimally invasive surgery that requires small incisions to approach large defects with excellent regeneration capacity.
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99833
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Wang Z, Zhang Z, Zhang K, Zhou Q, Chen S, Zheng H, Wang G, Cai S, Wang F, Li S. Multi-Omics Characterization of a Glycerolipid Metabolism-Related Gene Enrichment Score in Colon Cancer. Front Oncol 2022; 12:881953. [PMID: 35600382 PMCID: PMC9117699 DOI: 10.3389/fonc.2022.881953] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
Background Glycerolipid metabolism is involved in the genesis and progression of colon cancer. The current study aims at exploring the prognostic value and potential molecular mechanism of glycerolipid metabolism-related genes in colon cancer from the perspective of multi-omics. Methods Clinical information and mRNA expression data of patients with colon cancer were obtained from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases. Single-sample gene set enrichment analysis (ssGSEA) was applied to calculate the glycerolipid metabolism-related gene enrichment score (GLMS). Univariable and multivariable Cox regression analyses were used to study the prognostic value of GLMS in TCGA-COAD and GSE39582 cohorts. The molecular mechanism of the prognostic factor was investigated via immune cell infiltration estimation and correlation analysis of cancer hallmark pathways. Single-cell transcriptomic dataset GSE146771 was used to identify the cell populations which glycerolipid metabolism targeted on. Results The GLMS was found to be associated with tumor location and consensus molecular types (CMSs) of colon cancer in TCGA-COAD cohort (P < 0.05). Patients in the low-GLMS group exhibited poorer overall survival (OS) in TCGA cohort (P = 0.03; HR, 0.63; 95% CI, 0.42-0.94), which was further validated in the GSE39582 dataset (P < 0.001; HR, 0.57; 95% CI, 0.43-0.76). The association between the GLMS and OS remained significant in the multivariable analysis (TCGA cohort: P = 0.04; HR, 0.64; 95% CI, 0.42-0.98; GSE39582 cohort: P < 0.001; HR, 0.60; 95% CI, 0.45-0.80). The GLMS was positively correlated with cancer hallmark pathways including bile acid metabolism, xenobiotic metabolism, and peroxisome and negatively correlated with pathways such as interferon gamma response, allograft rejection, apoptosis, and inflammatory response (P < 0.05). Increased immune infiltration and upregulated expression of immune checkpoints were observed in patients with lower GLMS (P < 0.05). Single-cell datasets verified the different distribution of GLMS in cell subsets, with significant enrichment of GLMS in malignant cells and Tprolif cells. Conclusion We demonstrated that GLMS was a potential independent prognostic factor for colon cancer. The GLMS was also correlated with several cancer hallmark pathways, as well as immune microenvironment.
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Affiliation(s)
- Zhiyu Wang
- Department of Medical Oncology, Hebei Key Laboratory of Cancer Radiotherapy and Chemotherapy, Affiliated Hospital of Hebei University, Baoding, China
| | - Zhuoqi Zhang
- Department of Gastrointestinal Surgery, Affiliated Hospital of Hebei University, Baoding, China
| | - Ke Zhang
- General Surgery Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qiaoxia Zhou
- Medical Department, Burning Rock Biotech, Guangzhou, China
| | - Sidong Chen
- Medical Department, Burning Rock Biotech, Guangzhou, China
| | - Hao Zheng
- General Surgery Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Guoqiang Wang
- Medical Department, Burning Rock Biotech, Guangzhou, China
| | - Shangli Cai
- Medical Department, Burning Rock Biotech, Guangzhou, China
| | - Fujing Wang
- General Surgery Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shenglong Li
- General Surgery Department, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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99834
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Pizzi M, Binotto G, Rigoni Savioli G, Dei Tos AP, Orazi A. Of drills and bones: Giovanni Ghedini and the origin of bone marrow biopsy. Br J Haematol 2022; 198:943-952. [PMID: 35510703 DOI: 10.1111/bjh.18206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 11/28/2022]
Abstract
Bone marrow (BM) studies are pivotal for the diagnosis of haematological disorders. Their introduction into clinical haematology dates back to the work of Giovanni Ghedini (1877-1959), an Italian physician who first conceived BM sampling in 1908. Ghedini's proposal stemmed from his clinical experience and from the scientific developments that characterised his epoch. By presenting selected passages of Ghedini's publications, this report considers the theoretical and historical bases of his work and analyses its practical implications for modern haematology.
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Affiliation(s)
- Marco Pizzi
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Gianni Binotto
- Haematology and Clinical Immunology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Giulia Rigoni Savioli
- Central Medical Library 'Vincenzo Pinali' - Section of Ancient Books and Special Collections, University of Padua, Padua, Italy
| | - Angelo Paolo Dei Tos
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Attilio Orazi
- Department of Pathology, Texas Tech University Health Sciences Center, El Paso, Texas, USA
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99835
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Dong S, Liu B, Hu S, Guo F, Zhong Y, Cai Q, Zhang S, Qian Y, Wang J, Zhou F. A novel oncolytic virus induces a regional cytokine storm and safely eliminates malignant ascites of colon cancer. Cancer Med 2022; 11:4297-4309. [PMID: 35510373 DOI: 10.1002/cam4.4772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/23/2022] [Accepted: 04/12/2022] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Given malignant ascites with a terrible prognosis and a unique immune microenvironment, our purpose is to evaluate whether oncolytic herpes simplex virus type 2(OH2) is able to safely eliminate ascites of colon cancer and through which specific mechanism it exerts antitumor immunity. METHODS We established an ascites mice model through intraperitoneal injection of CT26 cells and obtained an appropriate dose range for in vivo tests. Efficacy and safety of OH2 were detected by weight of ascites, blood routine analysis, histopathological examination, and the survival time of mice. The specific mechanism underlying antitumor immunity was analyzed by cytometric bead array, flow cytometry, and single-cell RNA sequencing. Furthermore, anti-interleukin (IL)-6R antibody tocilizumab was synchronously or sequentially delivered with OH2 to explore the role of the regional cytokine storm, mainly IL-6 hypersecretion. RESULTS OH2 was able to eliminate ascites and significantly prolong the survival of mice-bearing CT26 tumor cells by intraperitoneal injection, without obvious systemic damage to the main organs even though a regional cytokine storm. Hypersecretion of pro-inflammatory cytokines, mainly IL-6, and increased infiltration of CD4+ and CD8+ T cells were observed in ascites mice treated by OH2, compared with those treated by 5-fluorouracil or nonresponders. Furthermore, the initial-stage blocking of the IL-6 pathway was able to considerably suppress antitumor immune responses driven by OH2. Surprisingly, we discovered upregulations of the immune checkpoint genes such as Cd274 and Pdcd1 by single-cell RNA sequencing. CONCLUSIONS OH2 could safely eliminate malignant ascites of colon cancer and convert the cold immune microenvironment by inducing a remarkably regional cytokine storm in ascites, mainly IL-6, in the early stage of antitumor immune responses beyond directed oncolytic virotherapy.
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Affiliation(s)
- Shuang Dong
- Hubei Key Laboratory of Tumor Biological Behaviors, Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.,Department of Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Binlei Liu
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei Key Laboratory of Industrial Microbiology, Hubei University of Technology, Wuhan, Hubei, China
| | - Sheng Hu
- Department of Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Fang Guo
- Department of Pathology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yi Zhong
- Department of Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qian Cai
- Department of Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Siqi Zhang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, Hubei, China
| | - Yu Qian
- Department of Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jun Wang
- Department of Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Fuxiang Zhou
- Hubei Key Laboratory of Tumor Biological Behaviors, Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
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99836
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Neri T, Celi A, Tinè M, Bernardinello N, Cosio MG, Saetta M, Nieri D, Bazzan E. The Emerging Role of Extracellular Vesicles Detected in Different Biological Fluids in COPD. Int J Mol Sci 2022; 23:ijms23095136. [PMID: 35563528 PMCID: PMC9101666 DOI: 10.3390/ijms23095136] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 01/08/2023] Open
Abstract
The pathogenesis of chronic obstructive pulmonary disease (COPD) is characterized by complex cellular and molecular mechanisms, not fully elucidated so far. It involves inflammatory cells (monocytes/macrophages, neutrophils, lymphocytes), cytokines, chemokines and, probably, new players yet to be clearly identified and described. Chronic local and systemic inflammation, lung aging and cellular senescence are key pathological events in COPD development and progression over time. Extracellular vesicles (EVs), released by virtually all cells both as microvesicles and exosomes into different biological fluids, are involved in intercellular communication and, therefore, represent intriguing players in pathobiological mechanisms (including those characterizing aging and chronic diseases); moreover, the role of EVs as biomarkers in different diseases, including COPD, is rapidly gaining recognition. In this review, after recalling the essential steps of COPD pathogenesis, we summarize the current evidence on the roles of EVs collected in different biological mediums as biomarkers in COPD and as potential players in the specific mechanisms leading to disease development. We will also briefly review the data on EV as potential therapeutic targets and potential therapeutic agents.
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Affiliation(s)
- Tommaso Neri
- Centro Dipartimentale di Biologia Cellulare Cardiorespiratoria, Dipartimento di Patologia Chirurgica, Medica, Molecolare e dell’Area Critica, Università degli Studi di Pisa, 56124 Pisa, Italy; (T.N.); (A.C.); (D.N.)
| | - Alessandro Celi
- Centro Dipartimentale di Biologia Cellulare Cardiorespiratoria, Dipartimento di Patologia Chirurgica, Medica, Molecolare e dell’Area Critica, Università degli Studi di Pisa, 56124 Pisa, Italy; (T.N.); (A.C.); (D.N.)
| | - Mariaenrica Tinè
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, 35128 Padova, Italy; (M.T.); (N.B.); (M.G.C.); (M.S.)
| | - Nicol Bernardinello
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, 35128 Padova, Italy; (M.T.); (N.B.); (M.G.C.); (M.S.)
| | - Manuel G. Cosio
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, 35128 Padova, Italy; (M.T.); (N.B.); (M.G.C.); (M.S.)
- Meakins-Christie Laboratories, Respiratory Division, McGill University, Montreal, QC H3A 0G4, Canada
| | - Marina Saetta
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, 35128 Padova, Italy; (M.T.); (N.B.); (M.G.C.); (M.S.)
| | - Dario Nieri
- Centro Dipartimentale di Biologia Cellulare Cardiorespiratoria, Dipartimento di Patologia Chirurgica, Medica, Molecolare e dell’Area Critica, Università degli Studi di Pisa, 56124 Pisa, Italy; (T.N.); (A.C.); (D.N.)
| | - Erica Bazzan
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, 35128 Padova, Italy; (M.T.); (N.B.); (M.G.C.); (M.S.)
- Correspondence: ; Tel.: +39-049-821-3449
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99837
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Carballo-Perich L, Puigoriol-Illamola D, Bashir S, Terceño M, Silva Y, Gubern-Mérida C, Serena J. Clinical Parameters and Epigenetic Biomarkers of Plaque Vulnerability in Patients with Carotid Stenosis. Int J Mol Sci 2022; 23:ijms23095149. [PMID: 35563540 PMCID: PMC9101730 DOI: 10.3390/ijms23095149] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 12/24/2022] Open
Abstract
Atheromatous disease is the first cause of death and dependency in developed countries and carotid artery atherosclerosis is one of the main causes of severe ischaemic strokes. Current management strategies are mainly based on the degree of stenosis and patient selection has limited accuracy. This information could be complemented by the identification of biomarkers of plaque vulnerability, which would permit patients at greater and lesser risk of stroke to be distinguished, thus enabling a better selection of patients for surgical or intensive medical treatment. Although several circulating protein-based biomarkers with significance for both the diagnosis of carotid artery disease and its prognosis have been identified, at present, none have been clinically implemented. This review focuses especially on the most relevant clinical parameters to take into account in routine clinical practice and summarises the most up-to-date data on epigenetic biomarkers of carotid atherosclerosis and plaque vulnerability.
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Affiliation(s)
- Laia Carballo-Perich
- Cerebrovascular Pathology Research Group, Girona Biomedical Research Institute (IDIBGI), RICORS-ICTUS, Parc Hospitalari Martí I Julià, Edifici M2, 17190 Salt, Spain; (L.C.-P.); (D.P.-I.)
| | - Dolors Puigoriol-Illamola
- Cerebrovascular Pathology Research Group, Girona Biomedical Research Institute (IDIBGI), RICORS-ICTUS, Parc Hospitalari Martí I Julià, Edifici M2, 17190 Salt, Spain; (L.C.-P.); (D.P.-I.)
| | - Saima Bashir
- Cerebrovascular Pathology Research Group, Stroke Unit, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Dr. Josep Trueta University Hospital, RICORS-ICTUS, Av. França s/n (7a Planta), 17007 Girona, Spain; (S.B.); (M.T.); (J.S.)
| | - Mikel Terceño
- Cerebrovascular Pathology Research Group, Stroke Unit, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Dr. Josep Trueta University Hospital, RICORS-ICTUS, Av. França s/n (7a Planta), 17007 Girona, Spain; (S.B.); (M.T.); (J.S.)
| | - Yolanda Silva
- Cerebrovascular Pathology Research Group, Stroke Unit, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Dr. Josep Trueta University Hospital, RICORS-ICTUS, Av. França s/n (7a Planta), 17007 Girona, Spain; (S.B.); (M.T.); (J.S.)
- Correspondence: (Y.S.); (C.G.-M.); Tel.: +34-872-987-087 (C.G.-M.)
| | - Carme Gubern-Mérida
- Cerebrovascular Pathology Research Group, Girona Biomedical Research Institute (IDIBGI), RICORS-ICTUS, Parc Hospitalari Martí I Julià, Edifici M2, 17190 Salt, Spain; (L.C.-P.); (D.P.-I.)
- Correspondence: (Y.S.); (C.G.-M.); Tel.: +34-872-987-087 (C.G.-M.)
| | - Joaquín Serena
- Cerebrovascular Pathology Research Group, Stroke Unit, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Dr. Josep Trueta University Hospital, RICORS-ICTUS, Av. França s/n (7a Planta), 17007 Girona, Spain; (S.B.); (M.T.); (J.S.)
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99838
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Hadjimichael AC, Pergaris A, Kaspiris A, Foukas AF, Kokkali S, Tsourouflis G, Theocharis S. The EPH/Ephrin System in Bone and Soft Tissue Sarcomas' Pathogenesis and Therapy: New Advancements and a Literature Review. Int J Mol Sci 2022; 23:ijms23095171. [PMID: 35563562 PMCID: PMC9100911 DOI: 10.3390/ijms23095171] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/02/2022] [Accepted: 05/04/2022] [Indexed: 12/04/2022] Open
Abstract
Musculoskeletal sarcomas represent rare heterogenous malignancies of mesenchymal origin that can be divided in two distinct subtypes, bone and soft tissue sarcomas. Current treatment options combine the surgical excision of local tumors and multidrug chemotherapy to prevent metastatic widespread disease. Due to the grim prognosis that usually accompanies such tumors, researchers have attempted to shed light on the molecular pathways implicated in their pathogenesis in order to develop novel, innovative, personalized therapeutic strategies. Erythropoietin-producing human hepatocellular receptors (EPHs) are tyrosine-kinase transmembrane receptors that, along with their ligands, ephrins, participate in both tumor-suppressive or tumor-promoting signaling pathways in bone and soft tissue sarcomas. The EPH/ephrin axis orchestrates cancerous processes such as cell–cell and cell–substrate adhesion and enhances the remodeling of the intracellular cytoskeleton to stimulate the motility and invasiveness of sarcoma cells. The purpose of our study was to review published PubMed literature to extract results from in vitro, in vivo and clinical trials indicative of the role of EPH/ephrin signaling in bone and soft tissue sarcomas. Based on these reports, significant interactions between the EPH/ephrin signaling pathway and a plethora of normal and abnormal cascades contribute to molecular mechanisms enhancing malignancy during sarcoma progression. In addition, EPHs and ephrins are prospective candidates for diagnostic, monitoring and therapeutic purposes in the clinical setting against bone and soft tissue sarcomas.
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Affiliation(s)
- Argyris C. Hadjimichael
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (A.C.H.); (A.P.); (S.K.); (G.T.)
- Department of Orthopaedics, St Mary’s Hospital, Imperial College Healthcare NHS Trust, Praed Street, London W2 1NY, UK
| | - Alexandros Pergaris
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (A.C.H.); (A.P.); (S.K.); (G.T.)
| | - Angelos Kaspiris
- Laboratory of Molecular Pharmacology, Department of Pharmacy, School of Health Sciences, University of Patras, 26504 Patras, Greece;
| | - Athanasios F. Foukas
- Third Department of Orthopaedic Surgery, “KAT” General Hospital of Athens, Nikis 2, 14561 Kifissia, Greece;
| | - Stefania Kokkali
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (A.C.H.); (A.P.); (S.K.); (G.T.)
| | - Gerasimos Tsourouflis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (A.C.H.); (A.P.); (S.K.); (G.T.)
| | - Stamatios Theocharis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527 Athens, Greece; (A.C.H.); (A.P.); (S.K.); (G.T.)
- Correspondence:
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99839
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Overexpressed lncRNA LINC00893 Suppresses Progression of Colon Cancer by Binding with miR-146b-3p to Upregulate PRSS8. JOURNAL OF ONCOLOGY 2022; 2022:8002318. [PMID: 35571488 PMCID: PMC9098335 DOI: 10.1155/2022/8002318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/11/2022] [Accepted: 04/19/2022] [Indexed: 12/27/2022]
Abstract
Background Long noncoding RNAs (lncRNAs) play a significant role in the progression and metastasis of various cancers. LINC00893 has been reported to exert antitumor effect on various cancers such as gastric cancer and thyroid cancer. Bioinformatics analysis also predicted that LINC00893 was downregulated in colon cancer. However, the clinical significance and regulating mechanism of LINC00893 in colon cancer remain unknown. Methods Expression of LINC00893, miR-146b-3p, and PRSS8 was detected in colon cancer tissues and adjacent nontumor tissues by RT-qPCR, and clinical significance was analyzed by receiver operating characteristic curve. The regulatory mechanism of LINC00893, miR-146b-3p, and PRSS8 was investigated by dual luciferase reporter and RNA pull-down assays. Proliferation, migration, invasion, and apoptosis were measured in HCT116 and SW620 cells by MTT, EdU staining, wound healing, Transwell, TUNEL, and flow-cytometry assays. Moreover, the effect of LINC00893 on colon cancer progression was further evaluated in tumor-bearing mice. Results LINC00893 and PRSS8 were significantly downregulated, while miR-146b-3p was upregulated in colon cancer tissues compared to control group. LINC00893, miR-146b-3p, and PRSS8 had significant diagnostic value with area under curve of 0.9383, 0.7300, and 0.9644, respectively. Overexpressed LINC00893 or silenced miR-146b-3p suppressed the proliferation, migration, and invasion while promoting apoptosis in colon cancer cells (HCT116, SW620). Moreover, miR-146b-3p overexpression reversed the inhibitory effect of LINC00893, while PRSS8 knockdown rescued the suppressive effect of miR-146b-3p inhibitor on malignant cell behaviors in colon cancer. Furthermore, the tumor growth in mice was significantly reduced by LINC00893 overexpression. Conclusion LINC00893 overexpression suppressed the progression of colon cancer by binding with miR-146b-3p to upregulate PRSS8. LINC00893 and its downstream molecules miR-146b-3p and PRSS8 may serve as novel biomarkers and therapeutic targets of colon cancer, providing new treatment options and research approaches towards colon cancer.
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99840
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Matveyenka M, Rizevsky S, Kurouski D. The Degree of Unsaturation of Fatty Acids in Phosphatidylserine Alters the Rate of Insulin Aggregation and the Structure and Toxicity of Amyloid Aggregates. FEBS Lett 2022; 596:1424-1433. [PMID: 35510803 DOI: 10.1002/1873-3468.14369] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 11/10/2022]
Abstract
Phosphatidylserine (PS) in the plasma membrane plays an important role in cell signaling and apoptosis. Cell degeneration is also linked to numerous amyloid diseases, pathologies that are associated with aggregation of misfolded proteins. In this work, we examine the effect of both saturated PS (DMPS) and unsaturated PS (DOPS and POPS) on the aggregation properties of insulin, as well as the structure and toxicity of insulin aggregates formed in the presence of these phospholipids. We found that the degree of unsaturation of fatty acids in PS alters the rate of insulin aggregation. We also found that toxicity of insulin-DMPS aggregates is significantly lower than the toxicity of DOPS- and POPS-insulin fibrils, whereas all these lipid-containing aggregates exert lower cell toxicity than insulin fibrils grown in a lipid-free environment.
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Affiliation(s)
- Mikhail Matveyenka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, 77843, United States
| | - Stanislav Rizevsky
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, 77843, United States.,Department of Biotechnology, Binh Duong University, Thu Dau Mot, 820000, Vietnam
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas, 77843, United States.,Department of Biomedical Engineering, Texas A&M University, College Station, Texas, 77843, United States
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99841
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Mao R, Zong N, Hu Y, Chen Y, Xu Y. Neuronal Death Mechanisms and Therapeutic Strategy in Ischemic Stroke. Neurosci Bull 2022; 38:1229-1247. [PMID: 35513682 PMCID: PMC9554175 DOI: 10.1007/s12264-022-00859-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/18/2022] [Indexed: 12/17/2022] Open
Abstract
Ischemic stroke caused by intracranial vascular occlusion has become increasingly prevalent with considerable mortality and disability, which gravely burdens the global economy. Current relatively effective clinical treatments are limited to intravenous alteplase and thrombectomy. Even so, patients still benefit little due to the short therapeutic window and the risk of ischemia/reperfusion injury. It is therefore urgent to figure out the neuronal death mechanisms following ischemic stroke in order to develop new neuroprotective strategies. Regarding the pathogenesis, multiple pathological events trigger the activation of cell death pathways. Particular attention should be devoted to excitotoxicity, oxidative stress, and inflammatory responses. Thus, in this article, we first review the principal mechanisms underlying neuronal death mediated by these significant events, such as intrinsic and extrinsic apoptosis, ferroptosis, parthanatos, pyroptosis, necroptosis, and autophagic cell death. Then, we further discuss the possibility of interventions targeting these pathological events and summarize the present pharmacological achievements.
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Affiliation(s)
- Rui Mao
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Ningning Zong
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Yujie Hu
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Ying Chen
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Yun Xu
- Department of Neurology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China.
- The State Key Laboratory of Pharmaceutical Biotechnology, Institute of Brain Science, Nanjing University, Nanjing, 210008, China.
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China.
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, 210008, China.
- Nanjing Neurology Clinic Medical Center, Nanjing, 210008, China.
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99842
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Malcolm JR, Leese NK, Lamond-Warner PI, Brackenbury WJ, White RJ. Widespread association of ERα with RMRP and tRNA genes in MCF-7 cells and breast cancers. Gene X 2022; 821:146280. [PMID: 35143945 PMCID: PMC8942118 DOI: 10.1016/j.gene.2022.146280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 01/21/2022] [Accepted: 02/03/2022] [Indexed: 12/04/2022] Open
Abstract
Estrogen receptor (ER) interacts with hundreds of tRNA genes (tDNAs) in MCF-7 cells. Hundreds of tDNAs are also targeted in primary breast tumours and metastases. Canonical estrogen response element is not found near top tDNA targets of ER. ER also targets non-coding breast cancer driver gene RMRP. ER also targets RN7SL1 gene that promotes breast cancer progression.
tRNA gene transcription by RNA polymerase III (Pol III) is a tightly regulated process, but dysregulated Pol III transcription is widely observed in cancers. Approximately 75% of all breast cancers are positive for expression of Estrogen Receptor alpha (ERα), which acts as a key driver of disease. MCF-7 cells rapidly upregulate tRNA gene transcription in response to estrogen and ChIP-PCR demonstrated ERα enrichment at tRNALeu and 5S rRNA genes in this breast cancer cell line. While these data implicate the ERα as a Pol III transcriptional regulator, how widespread this regulation is across the 631 tRNA genes has yet to be revealed. Through analyses of ERα ChIP-seq datasets, we show that ERα interacts with hundreds of tRNA genes, not only in MCF-7 cells, but also in primary human breast tumours and distant metastases. The extent of ERα association with tRNA genes varies between breast cancer cell lines and does not correlate with levels of ERα binding to its canonical target gene GREB1. Amongst other Pol III-transcribed genes, ERα is consistently enriched at the long non-coding RNA gene RMRP, a positive regulator of cell cycle progression that is subject to focal amplification in tumours. Another Pol III template targeted by ERα is the RN7SL1 gene, which is strongly implicated in breast cancer pathology by inducing inflammatory responses in tumours. Our data indicate that Pol III-transcribed non-coding genes should be added to the list of ERα targets in breast cancer.
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Affiliation(s)
- Jodie R Malcolm
- Department of Biology, The University of York, Heslington Road, YO10 5DD, United Kingdom
| | - Natasha K Leese
- Department of Biology, The University of York, Heslington Road, YO10 5DD, United Kingdom
| | | | - William J Brackenbury
- Department of Biology, The University of York, Heslington Road, YO10 5DD, United Kingdom
| | - Robert J White
- Department of Biology, The University of York, Heslington Road, YO10 5DD, United Kingdom.
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99843
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The E6 Oncoprotein of HPV16 AA-c Variant Regulates Cell Migration through the MINCR/miR-28-5p/RAP1B Axis. Viruses 2022; 14:v14050963. [PMID: 35632705 PMCID: PMC9143115 DOI: 10.3390/v14050963] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/30/2022] [Accepted: 05/03/2022] [Indexed: 01/03/2023] Open
Abstract
The E6 oncoprotein of HPV16 variants differentially alters the transcription of the genes involved in migration and non-coding RNAs such as lncRNAs. The role of the lncRNA MINCR in cervical cancer and its relationship with variants of oncogenic HPV remain unknown. Therefore, the objective of this study was to analyze the effect of the E6 oncoprotein of the AA-c variant of HPV16 in cell migration through the MINCR/miR-28-5p/RAP1B axis. To explore the functional role of MINCR in CC, we used an in vitro model of C33-A cells with exogenous expression of the E6 oncoprotein of the AA-c variant of HPV16. Interfering RNAs performed MINCR silencing, and the expression of miR-28-5p and RAP1B mRNA was analyzed by RT-qPCR. We found that C33-A/AA-c cells expressed MINCR 8-fold higher compared to the control cells. There is an inverse correlation between the expression of miR-28-5p and RAP1B in C33-A/AA-c cells. Our results suggest that MINCR might regulate the expression of RAP1B through the inhibition of miR-28-5p in CC cells expressing the E6 oncoprotein of HPV16 AA-c. We report, for the first time, that the MINCR/miR-28-5p/RAP1B axis positively regulates cell migration in CC-derived cells that express the E6 oncoprotein of the AA-c variant of HPV16.
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99844
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Burt P, Cornelis R, Geißler G, Hahne S, Radbruch A, Chang HD, Thurley K. Data-Driven Mathematical Model of Apoptosis Regulation in Memory Plasma Cells. Cells 2022; 11:cells11091547. [PMID: 35563853 PMCID: PMC9102437 DOI: 10.3390/cells11091547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/13/2022] [Accepted: 04/21/2022] [Indexed: 12/04/2022] Open
Abstract
Memory plasma cells constitutively produce copious amounts of antibodies, imposing a critical risk factor for autoimmune disease. We previously found that plasma cell survival requires secreted factors such as APRIL and direct contact to stromal cells, which act in concert to activate NF-κB- and PI3K-dependent signaling pathways to prevent cell death. However, the regulatory properties of the underlying biochemical network are confounded by the complexity of potential interaction and cross-regulation pathways. Here, based on flow-cytometric quantification of key signaling proteins in the presence or absence of the survival signals APRIL and contact to the stromal cell line ST2, we generated a quantitative model of plasma cell survival. Our model emphasizes the non-redundant nature of the two plasma cell survival signals APRIL and stromal cell contact, and highlights a requirement for differential regulation of individual caspases. The modeling approach allowed us to unify distinct data sets and derive a consistent picture of the intertwined signaling and apoptosis pathways regulating plasma cell survival.
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Affiliation(s)
- Philipp Burt
- German Rheumatism Research Center, 10117 Berlin, Germany; (P.B.); (R.C.); (G.G.); (S.H.); (A.R.)
- Institute for Theoretical Biology, Humboldt University, 10115 Berlin, Germany
| | - Rebecca Cornelis
- German Rheumatism Research Center, 10117 Berlin, Germany; (P.B.); (R.C.); (G.G.); (S.H.); (A.R.)
| | - Gustav Geißler
- German Rheumatism Research Center, 10117 Berlin, Germany; (P.B.); (R.C.); (G.G.); (S.H.); (A.R.)
- Institute for Theoretical Biology, Humboldt University, 10115 Berlin, Germany
| | - Stefanie Hahne
- German Rheumatism Research Center, 10117 Berlin, Germany; (P.B.); (R.C.); (G.G.); (S.H.); (A.R.)
| | - Andreas Radbruch
- German Rheumatism Research Center, 10117 Berlin, Germany; (P.B.); (R.C.); (G.G.); (S.H.); (A.R.)
| | - Hyun-Dong Chang
- German Rheumatism Research Center, 10117 Berlin, Germany; (P.B.); (R.C.); (G.G.); (S.H.); (A.R.)
- Institute of Biotechnology, Department of Cytometry, Technische Universität, 10623 Berlin, Germany
- Correspondence: (H.-D.C.); (K.T.)
| | - Kevin Thurley
- German Rheumatism Research Center, 10117 Berlin, Germany; (P.B.); (R.C.); (G.G.); (S.H.); (A.R.)
- Institute for Theoretical Biology, Humboldt University, 10115 Berlin, Germany
- Biomathematics Division, Institute of Experimental Oncology, University Hospital Bonn, 53127 Bonn, Germany
- Correspondence: (H.-D.C.); (K.T.)
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99845
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Disorders of the Calcium Sensing Signaling Pathway: From Familial Hypocalciuric Hypercalcemia (FHH) to Life Threatening Conditions in Infancy. J Clin Med 2022; 11:jcm11092595. [PMID: 35566721 PMCID: PMC9100033 DOI: 10.3390/jcm11092595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 11/23/2022] Open
Abstract
Familial hypocalciuric hypercalcemia (FHH) is a mostly benign condition of elevated calcium and PTH levels based on a hyposensitive calcium sensing receptor (CaSR) in FHH 1 or its downstream regulatory pathway in FHH2 and FHH3. In children, adolescents and young adults with FHH the main challenge is to distinguish the condition from primary hyperparathyroidism and thereby to avoid unnecessary treatments including parathyroidectomy. However, inheritance of FHH may result in neonatal hyperparathyroidism (NHPT) or neonatal severe hyperparathyroidism (NSHPT), conditions with high morbidity, and in the latter even high mortality. This review focuses on the genetic and pathophysiological framework that leads to the severe neonatal form, gives recommendations for counselling and summarizes treatment options.
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99846
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Schedel A, Friedrich UA, Morcos MNF, Wagener R, Mehtonen J, Watrin T, Saitta C, Brozou T, Michler P, Walter C, Försti A, Baksi A, Menzel M, Horak P, Paramasivam N, Fazio G, Autry RJ, Fröhling S, Suttorp M, Gertzen C, Gohlke H, Bhatia S, Wadt K, Schmiegelow K, Dugas M, Richter D, Glimm H, Heinäniemi M, Jessberger R, Cazzaniga G, Borkhardt A, Hauer J, Auer F. Recurrent Germline Variant in RAD21 Predisposes Children to Lymphoblastic Leukemia or Lymphoma. Int J Mol Sci 2022; 23:ijms23095174. [PMID: 35563565 PMCID: PMC9106003 DOI: 10.3390/ijms23095174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/02/2022] [Indexed: 12/04/2022] Open
Abstract
Somatic loss of function mutations in cohesin genes are frequently associated with various cancer types, while cohesin disruption in the germline causes cohesinopathies such as Cornelia-de-Lange syndrome (CdLS). Here, we present the discovery of a recurrent heterozygous RAD21 germline aberration at amino acid position 298 (p.P298S/A) identified in three children with lymphoblastic leukemia or lymphoma in a total dataset of 482 pediatric cancer patients. While RAD21 p.P298S/A did not disrupt the formation of the cohesin complex, it altered RAD21 gene expression, DNA damage response and primary patient fibroblasts showed increased G2/M arrest after irradiation and Mitomycin-C treatment. Subsequent single-cell RNA-sequencing analysis of healthy human bone marrow confirmed the upregulation of distinct cohesin gene patterns during hematopoiesis, highlighting the importance of RAD21 expression within proliferating B- and T-cells. Our clinical and functional data therefore suggest that RAD21 germline variants can predispose to childhood lymphoblastic leukemia or lymphoma without displaying a CdLS phenotype.
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Affiliation(s)
- Anne Schedel
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Ulrike Anne Friedrich
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Mina N. F. Morcos
- Department of Pediatrics, School of Medicine, Technical University of Munich; 80804 Munich, Germany; (M.N.F.M.); (F.A.)
| | - Rabea Wagener
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Juha Mehtonen
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, Yliopistonranta 1, FI-70211 Kuopio, Finland; (J.M.); (M.H.)
| | - Titus Watrin
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Claudia Saitta
- Tettamanti Research Center, Pediatrics, University of Milan Bicocca, Fondazione MBBM/San Gerardo Hospital, 20900 Monza, Italy; (C.S.); (G.F.); (G.C.)
| | - Triantafyllia Brozou
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Pia Michler
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Carolin Walter
- Institute of Medical Informatics, University of Muenster, 48149 Muenster, Germany; (C.W.); (M.D.)
| | - Asta Försti
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany; (A.F.); (R.J.A.)
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany
| | - Arka Baksi
- Institute of Physiological Chemistry, Medical Faculty Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.B.); (R.J.)
| | - Maria Menzel
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Peter Horak
- Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (P.H.); (S.F.)
| | - Nagarajan Paramasivam
- Computational Oncology, Molecular Diagnostics Program, National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany;
| | - Grazia Fazio
- Tettamanti Research Center, Pediatrics, University of Milan Bicocca, Fondazione MBBM/San Gerardo Hospital, 20900 Monza, Italy; (C.S.); (G.F.); (G.C.)
| | - Robert J Autry
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany; (A.F.); (R.J.A.)
- Hopp Children’s Cancer Center Heidelberg (KiTZ), 69120 Heidelberg, Germany
| | - Stefan Fröhling
- Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; (P.H.); (S.F.)
| | - Meinolf Suttorp
- Pediatric Hematology and Oncology, Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.S.); (U.A.F.); (P.M.); (M.M.); (M.S.)
| | - Christoph Gertzen
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-Universität Duesseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (C.G.); (H.G.)
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-Universität Duesseldorf, Universitätsstraße 1, 40225 Duesseldorf, Germany; (C.G.); (H.G.)
- John von Neumann Institute for Computing (NIC), Jülich Supercomputing Centre (JSC), Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Sanil Bhatia
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Karin Wadt
- Department of Clinical Genetics, University Hospital of Copenhagen, Faculty of health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark;
| | - Kjeld Schmiegelow
- Department of Paediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark;
| | - Martin Dugas
- Institute of Medical Informatics, University of Muenster, 48149 Muenster, Germany; (C.W.); (M.D.)
- Institute of Medical Informatics, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Daniela Richter
- Department of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Dresden, 01307 Dresden, Germany; (D.R.); (H.G.)
- German Cancer Consortium (DKTK), 01307 Dresden, Germany
| | - Hanno Glimm
- Department of Translational Medical Oncology, National Center for Tumor Diseases (NCT) Dresden, 01307 Dresden, Germany; (D.R.); (H.G.)
- German Cancer Consortium (DKTK), 01307 Dresden, Germany
- Translational Functional Cancer Genomics, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Merja Heinäniemi
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, Yliopistonranta 1, FI-70211 Kuopio, Finland; (J.M.); (M.H.)
| | - Rolf Jessberger
- Institute of Physiological Chemistry, Medical Faculty Carl Gustav Carus, TU Dresden, 01307 Dresden, Germany; (A.B.); (R.J.)
| | - Gianni Cazzaniga
- Tettamanti Research Center, Pediatrics, University of Milan Bicocca, Fondazione MBBM/San Gerardo Hospital, 20900 Monza, Italy; (C.S.); (G.F.); (G.C.)
- Medical Genetics, Department of Medicine and Surgery, University of Milan Bicocca, 20900 Monza, Italy
| | - Arndt Borkhardt
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Duesseldorf, Medical Faculty, 40225 Duesseldorf, Germany; (R.W.); (T.W.); (T.B.); (S.B.); (A.B.)
| | - Julia Hauer
- Department of Pediatrics, School of Medicine, Technical University of Munich; 80804 Munich, Germany; (M.N.F.M.); (F.A.)
- German Cancer Consortium (DKTK), 81675 Munich, Germany
- Correspondence: ; Tel.: +49-(89)-3068-3940
| | - Franziska Auer
- Department of Pediatrics, School of Medicine, Technical University of Munich; 80804 Munich, Germany; (M.N.F.M.); (F.A.)
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99847
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Long-Distance Repression by Human Silencers: Chromatin Interactions and Phase Separation in Silencers. Cells 2022; 11:cells11091560. [PMID: 35563864 PMCID: PMC9101175 DOI: 10.3390/cells11091560] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/01/2022] [Accepted: 05/02/2022] [Indexed: 12/12/2022] Open
Abstract
Three-dimensional genome organization represents an additional layer in the epigenetic regulation of gene expression. Active transcription controlled by enhancers or super-enhancers has been extensively studied. Enhancers or super-enhancers can recruit activators or co-activators to activate target gene expression through long-range chromatin interactions. Chromatin interactions and phase separation play important roles in terms of enhancer or super-enhancer functioning. Silencers are another major type of cis-regulatory element that can mediate gene regulation by turning off or reducing gene expression. However, compared to active transcription, silencer studies are still in their infancy. This review covers the current knowledge of human silencers, especially the roles of chromatin interactions and phase separation in silencers. This review also proposes future directions for human silencer studies.
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99848
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Neddylation of Enterovirus 71 VP2 Protein Reduces Its Stability and Restricts Viral Replication. J Virol 2022; 96:e0059822. [PMID: 35510863 DOI: 10.1128/jvi.00598-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Posttranslational modifications (PTMs) of viral proteins play critical roles in virus infection. The role of neddylation in enterovirus 71 (EV71) replication remains poorly defined. Here, we showed that the structural protein VP2 of EV71 can be modified by neural precursor cell-expressed developmentally downregulated protein 8 (NEDD8) in an E3 ligase X-linked inhibitor of apoptosis protein (XIAP)-dependent manner. Mutagenesis and biochemical analyses mapped the neddylation site at lysine 69 (K69) of VP2 and demonstrated that neddylation reduced the stability of VP2. In agreement with the essential role of VP2 in viral replication, studies with EV71 reporter viruses with wild-type VP2 (enhanced green fluorescent protein [EGFP]-EV71) and a K69R mutant VP2 (EGFP-EV71-VP2 K69R) showed that abolishment of VP2 neddylation increased EV71 replication. In support of this finding, overexpression of NEDD8 significantly inhibited the replication of wild-type EV71 and EGFP-EV71, but not EGFP-EV71-VP2 K69R, whereas pharmacologic inhibition of neddylation with the NEDD8-activating enzyme inhibitor MLN4924 promoted the replication of EV71 in biologically relevant cell types. Our results thus support the notion that EV71 replication can be negatively regulated by host cellular and pathobiological cues through neddylation of VP2 protein. IMPORTANCE Neddylation is a ubiquitin-like posttranslational modification by conjugation of neural precursor cell-expressed developmentally downregulated protein 8 (NEDD8) to specific proteins for regulation of their metabolism and biological activities. In this study, we demonstrated for the first time that EV71 VP2 protein is neddylated at K69 residue to promote viral protein degradation and consequentially suppress multiplication of the virus. Our findings advance knowledge related to the roles of VP2 in EV71 virulence and the neddylation pathway in the host restriction of EV71 infection.
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99849
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Tiek D, Cheng SY. DNA damage and metabolic mechanisms of cancer drug resistance. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2022; 5:368-379. [PMID: 35800362 PMCID: PMC9255237 DOI: 10.20517/cdr.2021.148] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/11/2022] [Accepted: 03/11/2022] [Indexed: 11/13/2022]
Abstract
Cancer drug resistance is one of the main barriers to overcome to ensure durable treatment responses. While many pivotal advances have been made in first combination therapies, then targeted therapies, and now broadening out to immunomodulatory drugs or metabolic targeting compounds, drug resistance is still ultimately universally fatal. In this brief review, we will discuss different strategies that have been used to fight drug resistance from synthetic lethality to tumor microenvironment modulation, focusing on the DNA damage response and tumor metabolism both within tumor cells and their surrounding microenvironment. In this way, with a better understanding of both targetable mutations in combination with the metabolism, smarter drugs may be designed to combat cancer drug resistance.
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Affiliation(s)
- Deanna Tiek
- Correspondence to: Deanna Tiek, The Ken & Ruth Davee Department of Neurology, Lou and Jean Malnati Brain Tumor Institute at Northwestern Medicine, Robert H. Lurie Comprehensive Cancer Center, and Simpson Querry Institute for Epigenetics, Northwestern University, Feinberg School of Medicine, 303 E Superior St, Chicago, IL 60611, USA. E-mail: ; Shi-Yuan Cheng, The Ken & Ruth Davee Department of Neurology, Lou and Jean Malnati Brain Tumor Institute at Northwestern Medicine, Robert H. Lurie Comprehensive Cancer Center, and Simpson Querry Institute for Epigenetics, Northwestern University, Feinberg School of Medicine, 303 E Superior St, Chicago, IL 60611, USA. E-mail:
| | - Shi-Yuan Cheng
- Correspondence to: Deanna Tiek, The Ken & Ruth Davee Department of Neurology, Lou and Jean Malnati Brain Tumor Institute at Northwestern Medicine, Robert H. Lurie Comprehensive Cancer Center, and Simpson Querry Institute for Epigenetics, Northwestern University, Feinberg School of Medicine, 303 E Superior St, Chicago, IL 60611, USA. E-mail: ; Shi-Yuan Cheng, The Ken & Ruth Davee Department of Neurology, Lou and Jean Malnati Brain Tumor Institute at Northwestern Medicine, Robert H. Lurie Comprehensive Cancer Center, and Simpson Querry Institute for Epigenetics, Northwestern University, Feinberg School of Medicine, 303 E Superior St, Chicago, IL 60611, USA. E-mail:
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99850
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Hamilton DJ, Hein AE, Holmes ZE, Wuttke DS, Batey RT. The DNA-Binding High-Mobility Group Box Domain of Sox Family Proteins Directly Interacts with RNA In Vitro. Biochemistry 2022; 61:10.1021/acs.biochem.2c00218. [PMID: 35511045 PMCID: PMC9636074 DOI: 10.1021/acs.biochem.2c00218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There is a growing body of evidence that a substantial number of protein domains identified as DNA-binding also interact with RNA to regulate biological processes. Several recent studies have revealed that the Sox2 transcription factor binds RNA through its high-mobility group box (HMGB) domain in vitro and in vivo. A high degree of conservation of this domain among members of the Sox family of transcription factors suggests that RNA-binding activity may be a general feature of these proteins. To address this hypothesis, we examined a subset of HMGB domains from human Sox family of proteins for their ability to bind both DNA and RNA in vitro. We observed selective, high-affinity interactions between Sox family HMGB domains and various model RNA elements, including a four-way junction RNA, a hairpin RNA with an internal bulge, G-quadruplex RNA, and a fragment of long noncoding RNA ES2, which is known to directly interact with Sox2. Importantly, the HMGB domains bind these RNA ligands significantly tighter than nonconsensus dsDNA and in some cases with affinities rivaling those of their consensus dsDNA sequences. These data suggest that RNA binding is a conserved feature of the Sox family of transcription factors with the potential to modulate unappreciated biological functions.
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Affiliation(s)
- Desmond J Hamilton
- Department of Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309-0596, United States
| | - Abigail E Hein
- Department of Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309-0596, United States
| | - Zachariah E Holmes
- Department of Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309-0596, United States
| | - Deborah S Wuttke
- Department of Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309-0596, United States
| | - Robert T Batey
- Department of Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309-0596, United States
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