1
|
Buizza C, Enström A, Carlsson R, Paul G. The Transcriptional Landscape of Pericytes in Acute Ischemic Stroke. Transl Stroke Res 2024; 15:714-728. [PMID: 37378751 PMCID: PMC11226519 DOI: 10.1007/s12975-023-01169-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/07/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023]
Abstract
The current treatment options for ischemic stroke aim to achieve reperfusion but are time critical. Novel therapeutic approaches that can be given beyond the limited time window of 3-4.5 h are still an unmet need to be addressed to improve stroke outcomes. The lack of oxygen and glucose in the area of ischemic injury initiates a pathological cascade leading to blood-brain barrier (BBB) breakdown, inflammation, and neuronal cell death, a process that may be intercepted to limit stroke progression. Pericytes located at the blood/brain interface are one of the first responders to hypoxia in stroke and therefore a potential target cell for early stroke interventions. Using single-cell RNA sequencing in a mouse model of permanent middle cerebral artery occlusion, we investigated the temporal differences in transcriptomic signatures in pericytes at 1, 12, and 24 h after stroke. Our results reveal a stroke-specific subcluster of pericytes that is present at 12 and 24 h and characterized by the upregulation of genes mainly related to cytokine signaling and immune response. This study identifies temporal transcriptional changes in the acute phase of ischemic stroke that reflect the early response of pericytes to the ischemic insult and its secondary consequences and may constitute potential future therapeutic targets.
Collapse
Affiliation(s)
- Carolina Buizza
- Translational Neurology Group, Department of Clinical Science, Lund University, 22184, Lund, Sweden
| | - Andreas Enström
- Translational Neurology Group, Department of Clinical Science, Lund University, 22184, Lund, Sweden
| | - Robert Carlsson
- Translational Neurology Group, Department of Clinical Science, Lund University, 22184, Lund, Sweden
| | - Gesine Paul
- Translational Neurology Group, Department of Clinical Science, Lund University, 22184, Lund, Sweden.
- Department of Neurology, Scania University Hospital, 22185, Lund, Sweden.
- Wallenberg Centre for Molecular Medicine, Lund University, 22184, Lund, Sweden.
| |
Collapse
|
2
|
Dai Y, Ying Y, Zhu G, Xu Y, Ji K. STAT3 drives the expression of HIF1alpha in cancer cells through a novel super-enhancer. Biochem Biophys Res Commun 2024; 735:150483. [PMID: 39098275 DOI: 10.1016/j.bbrc.2024.150483] [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: 06/04/2024] [Revised: 07/25/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
Aerobic glycolysis is one of the major hallmarks of malignant tumors. This metabolic reprogramming benefits the rapid proliferation of cancer cells, facilitates the formation of tumor microenvironment to support their growth and survival, and impairs the efficacy of various tumor therapies. Therefore, the elucidation of the mechanisms driving aerobic glycolysis in tumors represents a pivotal breakthrough in developing therapeutic strategies for solid tumors. HIF1α serves as a central regulator of aerobic glycolysis with elevated mRNA and protein expression across multiple tumor types. However, the mechanisms contributing to this upregulation remain elusive. This study reports the identification of a novel HIF1α super enhancer (HSE) in multiple cancer cells using bioinformatics analysis, chromosome conformation capture (3C), chromatin immunoprecipitation (ChIP), and CRISPR/Cas9 genome editing techniques. Deletion of HSE in cancer cells significantly reduces the expression of HIF1α, glycolysis, cell proliferation, colony and tumor formation ability, confirming the role of HSE as the enhancer of HIF1α in cancer cells. Particularly, we demonstrated that STAT3 promotes the expression of HIF1α by binding to HSE. The discovery of HSE will help elucidate the pathways driving tumor aerobic glycolysis, offering new therapeutic targets and potentially resolving the bottleneck in solid tumor treatment.
Collapse
Affiliation(s)
- Yonghui Dai
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Yue Ying
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Gaoyang Zhu
- Guangzhou Key Laboratory of Maternal-Fetal Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, China
| | - Yang Xu
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China; Division of Biological Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0322, USA.
| | - Kaiyuan Ji
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China; Guangzhou Key Laboratory of Maternal-Fetal Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623, China; Medical Research Center, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China.
| |
Collapse
|
3
|
Hwang I, Kim BS, Lee HY, Cho SW, Lee SE, Ahn JY. PA2G4/EBP1 ubiquitination by PRKN/PARKIN promotes mitophagy protecting neuron death in cerebral ischemia. Autophagy 2024; 20:365-379. [PMID: 37712850 PMCID: PMC10813645 DOI: 10.1080/15548627.2023.2259215] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023] Open
Abstract
Cerebral ischemia induces massive mitochondrial damage, leading to neuronal death. The elimination of damaged mitochondria via mitophagy is critical for neuroprotection. Here we show that the level of PA2G4/EBP1 (proliferation-associated 2G4) was notably increased early during transient middle cerebral artery occlusion and prevented neuronal death by eliciting cerebral ischemia-reperfusion (IR)-induced mitophagy. Neuron-specific knockout of Pa2g4 increased infarct volume and aggravated neuron loss with impaired mitophagy and was rescued by introduction of adeno-associated virus serotype 2 expressing PA2G4/EBP1. We determined that PA2G4/EBP1 is ubiquitinated on lysine 376 by PRKN/PARKIN on the damaged mitochondria and interacts with receptor protein SQSTM1/p62 for mitophagy induction. Thus, our study suggests that PA2G4/EBP1 ubiquitination following cerebral IR-injury promotes mitophagy induction, which may be implicated in neuroprotection.Abbreviations: AAV: adeno-associated virus; ACTB: actin beta; BNIP3L/NIX: BCL2 interacting protein 3 like; CA1: Cornu Ammonis 1; CASP3: caspase 3; CCCP: carbonyl cyanide m-chlorophenyl hydrazone; DMSO: dimethyl sulfoxide; PA2G4/EBP1: proliferation-associated 2G4; FUNDC1: FUN14 domain containing 1; IB: immunoblotting; ICC: immunocytochemistry; IHC: immunohistochemistry; IP: immunoprecipitation; MCAO: middle cerebral artery occlusion; MEF: mouse embryonic fibroblast; OGD: oxygen-glucose deprivation; PRKN/PARKIN: parkin RBR E3 ubiquitin protein ligase; PINK1: PTEN induced kinase 1; RBFOX3/NeuN: RNA binding fox-1 homolog 3; SQSTM1/p62: sequestosome 1; TIMM23: translocase of inner mitochondrial membrane 23; TOMM20: translocase of outer mitochondrial membrane 20; TUBB: tubulin beta class I; WT: wild-type.
Collapse
Affiliation(s)
- Inwoo Hwang
- Department of Molecular Cell Biology, Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon, Korea
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - Byeong-Seong Kim
- Department of Molecular Cell Biology, Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon, Korea
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - Ho Yun Lee
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Sung-Woo Cho
- Department of Biochemistry and Molecular Biology, University of Ulsan, College of Medicine, Seoul, Korea
| | - Seung Eun Lee
- Research Animal Resources Center, Korea Institute of Science and Technology, Seongbuk-gu, Republic of Korea
| | - Jee-Yin Ahn
- Department of Molecular Cell Biology, Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon, Korea
- Single Cell Network Research Center, Sungkyunkwan University School of Medicine, Suwon, Korea
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| |
Collapse
|
4
|
Dinarello A, Betto RM, Diamante L, Tesoriere A, Ghirardo R, Cioccarelli C, Meneghetti G, Peron M, Laquatra C, Tiso N, Martello G, Argenton F. STAT3 and HIF1α cooperatively mediate the transcriptional and physiological responses to hypoxia. Cell Death Discov 2023; 9:226. [PMID: 37407568 DOI: 10.1038/s41420-023-01507-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/04/2023] [Accepted: 06/20/2023] [Indexed: 07/07/2023] Open
Abstract
STAT3 and HIF1α are two fundamental transcription factors involved in many merging processes, like angiogenesis, metabolism, and cell differentiation. Notably, under pathological conditions, the two factors have been shown to interact genetically, but both the molecular mechanisms underlying such interactions and their relevance under physiological conditions remain unclear. In mouse embryonic stem cells (ESCs) we manage to determine the specific subset of hypoxia-induced genes that need STAT3 to be properly transcribed and, among them, fundamental genes like Vegfa, Hk1, Hk2, Pfkp and Hilpda are worth mentioning. Unexpectedly, we also demonstrated that the absence of STAT3 does not affect the expression of Hif1α mRNA nor the stabilization of HIF1α protein, but the STAT3-driven regulation of the hypoxia-dependent subset of gene could rely on the physical interaction between STAT3 and HIF1α. To further elucidate the physiological roles of this STAT3 non-canonical nuclear activity, we used a CRISPR/Cas9 zebrafish stat3 knock-out line. Notably, hypoxia-related fluorescence of the hypoxia zebrafish reporter line (HRE:mCherry) cannot be induced when Stat3 is not active and, while Stat3 Y705 phosphorylation seems to have a pivotal role in this process, S727 does not affect the Stat3-dependent hypoxia response. Hypoxia is fundamental for vascularization, angiogenesis and immune cells mobilization; all processes that, surprisingly, cannot be induced by low oxygen levels when Stat3 is genetically ablated. All in all, here we report the specific STAT3/HIF1α-dependent subset of genes in vitro and, for the first time with an in vivo model, we determined some of the physiological roles of STAT3-hypoxia crosstalk.
Collapse
Affiliation(s)
| | | | - Linda Diamante
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | | | | | | | | | | | - Claudio Laquatra
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Natascia Tiso
- Department of Biology, University of Padova, Padova, Italy
| | | | | |
Collapse
|
5
|
Huang T, Fakurazi S, Cheah PS, Ling KH. REST Targets JAK-STAT and HIF-1 Signaling Pathways in Human Down Syndrome Brain and Neural Cells. Int J Mol Sci 2023; 24:9980. [PMID: 37373133 DOI: 10.3390/ijms24129980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Down syndrome (DS) is the most frequently diagnosed chromosomal disorder of chromosome 21 (HSA21) aneuploidy, characterized by intellectual disability and reduced lifespan. The transcription repressor, Repressor Element-1 Silencing Transcription factor (REST), which acts as an epigenetic regulator, is a crucial regulator of neuronal and glial gene expression. In this study, we identified and investigated the role of REST-target genes in human brain tissues, cerebral organoids, and neural cells in Down syndrome. Gene expression datasets generated from healthy controls and DS samples of human brain tissues, cerebral organoids, NPC, neurons, and astrocytes were retrieved from the Gene Ontology (GEO) and Sequence Read Archive (SRA) databases. Differential expression analysis was performed on all datasets to produce differential expression genes (DEGs) between DS and control groups. REST-targeted DEGs were subjected to functional ontologies, pathways, and network analyses. We found that REST-targeted DEGs in DS were enriched for the JAK-STAT and HIF-1 signaling pathways across multiple distinct brain regions, ages, and neural cell types. We also identified REST-targeted DEGs involved in nervous system development, cell differentiation, fatty acid metabolism and inflammation in the DS brain. Based on the findings, we propose REST as the critical regulator and a promising therapeutic target to modulate homeostatic gene expression in the DS brain.
Collapse
Affiliation(s)
- Tan Huang
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Sharida Fakurazi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Pike-See Cheah
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - King-Hwa Ling
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Malaysian Research Institute on Ageing (MyAgeingTM), Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| |
Collapse
|
6
|
Carlsson R, Enström A, Paul G. Molecular Regulation of the Response of Brain Pericytes to Hypoxia. Int J Mol Sci 2023; 24:ijms24065671. [PMID: 36982744 PMCID: PMC10053233 DOI: 10.3390/ijms24065671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
The brain needs sufficient oxygen in order to function normally. This is achieved by a large vascular capillary network ensuring that oxygen supply meets the changing demand of the brain tissue, especially in situations of hypoxia. Brain capillaries are formed by endothelial cells and perivascular pericytes, whereby pericytes in the brain have a particularly high 1:1 ratio to endothelial cells. Pericytes not only have a key location at the blood/brain interface, they also have multiple functions, for example, they maintain blood–brain barrier integrity, play an important role in angiogenesis and have large secretory abilities. This review is specifically focused on both the cellular and the molecular responses of brain pericytes to hypoxia. We discuss the immediate early molecular responses in pericytes, highlighting four transcription factors involved in regulating the majority of transcripts that change between hypoxic and normoxic pericytes and their potential functions. Whilst many hypoxic responses are controlled by hypoxia-inducible factors (HIF), we specifically focus on the role and functional implications of the regulator of G-protein signaling 5 (RGS5) in pericytes, a hypoxia-sensing protein that is regulated independently of HIF. Finally, we describe potential molecular targets of RGS5 in pericytes. These molecular events together contribute to the pericyte response to hypoxia, regulating survival, metabolism, inflammation and induction of angiogenesis.
Collapse
Affiliation(s)
- Robert Carlsson
- Translational Neurology Group, Department of Clinical Science, Wallenberg Neuroscience Centre and Wallenberg Centre for Molecular Medicine, Lund University, 22184 Lund, Sweden
| | - Andreas Enström
- Translational Neurology Group, Department of Clinical Science, Wallenberg Neuroscience Centre and Wallenberg Centre for Molecular Medicine, Lund University, 22184 Lund, Sweden
| | - Gesine Paul
- Translational Neurology Group, Department of Clinical Science, Wallenberg Neuroscience Centre and Wallenberg Centre for Molecular Medicine, Lund University, 22184 Lund, Sweden
- Department of Neurology, Scania University Hospital, 22185 Lund, Sweden
- Correspondence:
| |
Collapse
|
7
|
Saber S, El-Fattah EEA, Abdelhamid AM, Mourad AAE, Hamouda MAM, Elrabat A, Zakaria S, Haleem AA, Mohamed SZ, Elgharabawy RM, Morsy NE, El Adle Khalaf N, Mohammed OA, El-Bahouty WB, Mostafa SA, Abdelhady R, Galal O, ElSaid ZH, Yahya G, Shata A, Youssef ME. Innovative challenge for the inhibition of hepatocellular carcinoma progression by combined targeting of HSP90 and STAT3/HIF-1α signaling. Biomed Pharmacother 2023; 158:114196. [PMID: 36916405 DOI: 10.1016/j.biopha.2022.114196] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/18/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the third foremost cause of cancer-related deaths. HCC has a very bad prognosis because it is asymptomatic in the early stages, resulting in a late diagnosis, and it is highly resistant to conventional chemotherapy. Such chemotherapies have been proven disappointing because they provide extremely low survival benefits. This study discloses that the STAT3/HIF-1α is an auspicious therapeutic attack site for conceivable repression of HCC development. A site that can be targeted by simultaneous administration of a STAT3 inhibitor in the context of HSP90 inhibition. 17-DMAG binds to HSP90 and constrains its function, resulting in the degradation of HSP90 client proteins HIF-1α and STAT3. Hypoxia recruits STAT3/HIF-1α complex within the VEGF promoter. Additionally, it was acknowledged that STAT3 is an essential mediator of VEGF transcription by direct binding to its promoter. Furthermore, it induces HIF-1α stability and enhances its transcriptional activity. Herein, we revealed that the combination therapy using 17-DMAG and nifuroxazide, a STAT3 inhibitor, repressed the diethylnitrosamine-induced alterations in the structure of the liver. This effect was mediated via decreasing the levels of the HSP90 client proteins HIF-1α and pSTAT3 resulting in the suppression of the STAT3/HIF-1α complex transcriptional activity. To conclude, 17-DMAG/NFXZD combination therapy-induced disruption in the STAT3/HIF-1α loop led to a potential antiangiogenic activity and showed apoptotic potential by inhibiting autophagy and inducing ROS/apoptosis signaling. Additionally, this combination therapy exhibited promising survival prolongation in mice with HCC. Consequently, the use of 17-DMAG/NFXZD renders an inspirational perspective in managing HCC. However, further investigations are compulsory.
Collapse
Affiliation(s)
- Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt.
| | - Eslam E Abd El-Fattah
- Department of Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt.
| | - Amir Mohamed Abdelhamid
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt.
| | - Ahmed A E Mourad
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Port-Said University, Port-Said 42511, Egypt.
| | | | - Amr Elrabat
- Gastroenterology and Hepatology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Sahar Zakaria
- Department of Tropical Medicine, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Amira A Haleem
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Sherin Z Mohamed
- Department of Internal Medicine, Faculty of Medicine, Horus University, New Damietta 34518, Egypt.
| | | | - Nesreen Elsayed Morsy
- Pulmonary Medicine Department, Mansoura University Sleep Center, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Noura El Adle Khalaf
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Osama A Mohammed
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt.
| | | | - Sally Abdallah Mostafa
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Rasha Abdelhady
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Fayoum University, Fayoum, Egypt.
| | - Omneya Galal
- Department of Pharmacology, Faculty of Pharmacy, Ahram Canadian University, Giza 12451, Egypt.
| | - Zeinab H ElSaid
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Galal Yahya
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Al Sharqia 44519, Egypt.
| | - Ahmed Shata
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt; Department of Clinical Pharmacy, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt.
| | - Mahmoud E Youssef
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt.
| |
Collapse
|
8
|
Panagaki T, Randi EB, Szabo C, Hölscher C. Incretin Mimetics Restore the ER-Mitochondrial Axis and Switch Cell Fate Towards Survival in LUHMES Dopaminergic-Like Neurons: Implications for Novel Therapeutic Strategies in Parkinson's Disease. JOURNAL OF PARKINSON'S DISEASE 2023; 13:1149-1174. [PMID: 37718851 PMCID: PMC10657688 DOI: 10.3233/jpd-230030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 09/19/2023]
Abstract
BACKGROUND Parkinson's disease (PD) is a progressive neurodegenerative movement disorder that afflicts more than 10 million people worldwide. Available therapeutic interventions do not stop disease progression. The etiopathogenesis of PD includes unbalanced calcium dynamics and chronic dysfunction of the axis of the endoplasmic reticulum (ER) and mitochondria that all can gradually favor protein aggregation and dopaminergic degeneration. OBJECTIVE In Lund Human Mesencephalic (LUHMES) dopaminergic-like neurons, we tested novel incretin mimetics under conditions of persistent, calcium-dependent ER stress. METHODS We assessed the pharmacological effects of Liraglutide-a glucagon-like peptide-1 (GLP-1) analog-and the dual incretin GLP-1/GIP agonist DA3-CH in the unfolded protein response (UPR), cell bioenergetics, mitochondrial biogenesis, macroautophagy, and intracellular signaling for cell fate in terminally differentiated LUHMES cells. Cells were co-stressed with the sarcoplasmic reticulum calcium ATPase (SERCA) inhibitor, thapsigargin. RESULTS We report that Liraglutide and DA3-CH analogs rescue the arrested oxidative phosphorylation and glycolysis. They mitigate the suppressed mitochondrial biogenesis and hyper-polarization of the mitochondrial membrane, all to re-establish normalcy of mitochondrial function under conditions of chronic ER stress. These effects correlate with a resolution of the UPR and the deficiency of components for autophagosome formation to ultimately halt the excessive synaptic and neuronal death. Notably, the dual incretin displayed a superior anti-apoptotic effect, when compared to Liraglutide. CONCLUSIONS The results confirm the protective effects of incretin signaling in ER and mitochondrial stress for neuronal degeneration management and further explain the incretin-derived effects observed in PD patients.
Collapse
Affiliation(s)
- Theodora Panagaki
- Faculty of Science & Medicine, University of Fribourg, Fribourg, Switzerland
| | - Elisa B. Randi
- Faculty of Science & Medicine, University of Fribourg, Fribourg, Switzerland
| | - Csaba Szabo
- Faculty of Science & Medicine, University of Fribourg, Fribourg, Switzerland
| | - Christian Hölscher
- Research & Experimental Center, Henan University of Chinese Medicine, Zhengzhou, China
| |
Collapse
|
9
|
Xiao W, Ahluwalia P, Wang L, Howard J, Kolhe R, Rojiani AM, Rojiani MV. TIMP-1 Dependent Modulation of Metabolic Profiles Impacts Chemoresistance in NSCLC. Cells 2022; 11:cells11193036. [PMID: 36230997 PMCID: PMC9562647 DOI: 10.3390/cells11193036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/28/2022] Open
Abstract
The development of chemoresistance remains a significant barrier to treating NSCLC. Alteration of cancer cell metabolism is an important mechanism for chemoresistance. This study explored the role of aberrant metabolism in TIMP-1-mediated chemoresistance. Bioinformatics analysis identified an association of high TIMP-1 with altered energy metabolism. We have defined the role of depolarized mitochondria through a reduction in lactate secretion, higher ROS levels in TIMP-1 KD cells and reduced GSH levels. TIMP-1 modulates the metabolic profile via acetylation of mitochondrial STAT3 and its interaction with CD44. Intriguingly, monomers of acetylated STAT3 were critical for altered metabolism, whereas STAT3 dimers abrogated this function. Further, the mitochondrial metabolic profile was also altered in a cisplatin-resistant clone of A549 cells. We also correlated the immunoexpression of CD44, STAT3 and TIMP-1 in patient samples. This study provided evidence that TIMP-1 alters the metabolic profile by modulating mitochondrial metabolism via the CD44-STAT3 axis through its effects on STAT3 acetylation. It also lent further support to the critical role of TIMP-1 in chemoresistance. Interrogation of the TCGA-LUAD dataset revealed perturbations in the critical modulator that can alter metabolic states in cancer cells. Higher expression of a five-gene signature, including TIMP-1, correlated with immunosuppressive cells and was found to be associated with overall survival. This study identified several metabolic mechanisms that could influence therapeutic options and prognosis in NSCLC patients.
Collapse
Affiliation(s)
- Wei Xiao
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Pankaj Ahluwalia
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Lan Wang
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - John Howard
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Ravindra Kolhe
- Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Amyn M. Rojiani
- Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, USA
- Room T3409, Penn State Cancer Institute, Penn State College of Medicine, Hershey, PA 17033, USA
| | - Mumtaz V. Rojiani
- Department of Pathology, Penn State College of Medicine, Hershey, PA 17033, USA
- Room T3409, Penn State Cancer Institute, Penn State College of Medicine, Hershey, PA 17033, USA
- Department of Pharmacology, Penn State College of Medicine, Hershey, PA 17033, USA
- Correspondence: ; Tel.: +1-717-531-0003 (ext. 322422)
| |
Collapse
|
10
|
El-Kashef DH, Youssef ME, Nasr M, Alrouji M, Alhajlah S, AlOmeir O, El Adle Khalaf N, Ghaffar DMA, Jamil L, Abdel-Nasser ZM, Ibrahim S, Abdeldaiem MSI, Donia SS, Mohammed OA, Morsy NE, Shata A, Saber S. Pimitespib, an HSP90 inhibitor, augments nifuroxazide-induced disruption in the IL-6/STAT3/HIF-1α autocrine loop in rats with bleomycin-challenged lungs: Evolutionary perspective in managing pulmonary fibrosis. Biomed Pharmacother 2022; 153:113487. [DOI: 10.1016/j.biopha.2022.113487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/15/2022] [Accepted: 07/27/2022] [Indexed: 11/02/2022] Open
|
11
|
Qiu YM, Zhang CL, Chen AQ, Wang HL, Zhou YF, Li YN, Hu B. Immune Cells in the BBB Disruption After Acute Ischemic Stroke: Targets for Immune Therapy? Front Immunol 2021; 12:678744. [PMID: 34248961 PMCID: PMC8260997 DOI: 10.3389/fimmu.2021.678744] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/31/2021] [Indexed: 12/15/2022] Open
Abstract
Blood-Brain Barrier (BBB) disruption is an important pathophysiological process of acute ischemic stroke (AIS), resulting in devastating malignant brain edema and hemorrhagic transformation. The rapid activation of immune cells plays a critical role in BBB disruption after ischemic stroke. Infiltrating blood-borne immune cells (neutrophils, monocytes, and T lymphocytes) increase BBB permeability, as they cause microvascular disorder and secrete inflammation-associated molecules. In contrast, they promote BBB repair and angiogenesis in the latter phase of ischemic stroke. The profound immunological effects of cerebral immune cells (microglia, astrocytes, and pericytes) on BBB disruption have been underestimated in ischemic stroke. Post-stroke microglia and astrocytes can adopt both an M1/A1 or M2/A2 phenotype, which influence BBB integrity differently. However, whether pericytes acquire microglia phenotype and exert immunological effects on the BBB remains controversial. Thus, better understanding the inflammatory mechanism underlying BBB disruption can lead to the identification of more promising biological targets to develop treatments that minimize the onset of life-threatening complications and to improve existing treatments in patients. However, early attempts to inhibit the infiltration of circulating immune cells into the brain by blocking adhesion molecules, that were successful in experimental stroke failed in clinical trials. Therefore, new immunoregulatory therapeutic strategies for acute ischemic stroke are desperately warranted. Herein, we highlight the role of circulating and cerebral immune cells in BBB disruption and the crosstalk between them following acute ischemic stroke. Using a robust theoretical background, we discuss potential and effective immunotherapeutic targets to regulate BBB permeability after acute ischemic stroke.
Collapse
Affiliation(s)
| | | | | | | | | | - Ya-nan Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Hu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
12
|
Wang L, Ren C, Li Y, Gao C, Li N, Li H, Wu D, He X, Xia C, Ji X. Remote ischemic conditioning enhances oxygen supply to ischemic brain tissue in a mouse model of stroke: Role of elevated 2,3-biphosphoglycerate in erythrocytes. J Cereb Blood Flow Metab 2021; 41:1277-1290. [PMID: 32933360 PMCID: PMC8142126 DOI: 10.1177/0271678x20952264] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxygen supply for ischemic brain tissue during stroke is critical to neuroprotection. Remote ischemic conditioning (RIC) treatment is effective for stroke. However, it is not known whether RIC can improve brain tissue oxygen supply. In current study, we employed a mouse model of stroke created by middle cerebral artery occlusion (MCAO) to investigate the effect of RIC on oxygen supply to the ischemic brain tissue using a hypoxyprobe system. Erythrocyte oxygen-carrying capacity and tissue oxygen exchange were assessed by measuring oxygenated hemoglobin and oxygen dissociation curve. We found that RIC significantly mitigated hypoxic signals and decreased neural cell death, thereby preserving neurological functions. The tissue oxygen exchange was markedly enhanced, along with the elevated hemoglobin P50 and right-shifted oxygen dissociation curve. Intriguingly, RIC markedly elevated 2,3-biphosphoglycerate (2,3-BPG) levels in erythrocyte, and the erythrocyte 2,3-BPG levels were highly negatively correlated with the hypoxia in the ischemic brain tissue. Further, adoptive transfusion of 2,3-BPG-rich erythrocytes prepared from RIC-treated mice significantly enhanced the oxygen supply to the ischemic tissue in MCAO mouse model. Collectively, RIC protects against ischemic stroke through improving oxygen supply to the ischemic brain tissue where the enhanced tissue oxygen delivery and exchange by RIC-induced 2,3-BPG-rich erythrocytes may play a role.
Collapse
Affiliation(s)
- Lin Wang
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Changhong Ren
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Municipal Geriatric Medical Research Center, Beijing, China
| | - Yang Li
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Chen Gao
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ning Li
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Haiyan Li
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Di Wu
- Deparment of Neurology, China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiaoduo He
- Deparment of Neurology, China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Changqing Xia
- Department of Hematology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xunming Ji
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Municipal Geriatric Medical Research Center, Beijing, China.,Deparment of Neurology, China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,Center of Stroke, Beijing Institute for Brain Disorder, Beijing, China
| |
Collapse
|
13
|
Perspectives Regarding the Intersections between STAT3 and Oxidative Metabolism in Cancer. Cells 2020; 9:cells9102202. [PMID: 33003453 PMCID: PMC7600636 DOI: 10.3390/cells9102202] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 09/19/2020] [Accepted: 09/25/2020] [Indexed: 12/13/2022] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) functions as a major molecular switch that plays an important role in the communication between cytokines and kinases. In this role, it regulates the transcription of genes involved in various biochemical processes, such as proliferation, migration, and metabolism of cancer cells. STAT3 undergoes diverse post-translational modifications, such as the oxidation of cysteine by oxidative stress, the acetylation of lysine, or the phosphorylation of serine/threonine. In particular, the redox modulation of critical cysteine residues present in the DNA-binding domain of STAT3 inhibits its DNA-binding activity, resulting in the inactivation of STAT3-mediated gene expression. Accumulating evidence supports that STAT3 is a key protein that acts as a mediator of metabolism and mitochondrial activity. In this review, we focus on the post-translational modifications of STAT3 by oxidative stress and how the modification of STAT3 regulates cell metabolism, particularly in the metabolic pathways in cancer cells.
Collapse
|
14
|
Varisli L, Cen O, Vlahopoulos S. Dissecting pharmacological effects of chloroquine in cancer treatment: interference with inflammatory signaling pathways. Immunology 2020; 159:257-278. [PMID: 31782148 PMCID: PMC7011648 DOI: 10.1111/imm.13160] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/20/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022] Open
Abstract
Chloroquines are 4-aminoquinoline-based drugs mainly used to treat malaria. At pharmacological concentrations, they have significant effects on tissue homeostasis, targeting diverse signaling pathways in mammalian cells. A key target pathway is autophagy, which regulates macromolecule turnover in the cell. In addition to affecting cellular metabolism and bioenergetic flow equilibrium, autophagy plays a pivotal role at the interface between inflammation and cancer progression. Chloroquines consequently have critical effects in tissue metabolic activity and importantly, in key functions of the immune system. In this article, we will review the work addressing the role of chloroquines in the homeostasis of mammalian tissue, and the potential strengths and weaknesses concerning their use in cancer therapy.
Collapse
Affiliation(s)
- Lokman Varisli
- Union of Education and Science Workers (EGITIM SEN), Diyarbakir Branch, Diyarbakir, Turkey
- Department of Molecular Biology and Genetics, Science Faculty, Dicle University, Diyarbakir, Turkey
| | - Osman Cen
- Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Natural Sciences, Joliet Jr College, Joliet, IL, USA
| | - Spiros Vlahopoulos
- First Department of Pediatrics, National and Kapodistrian University of Athens, Athens, Greece
| |
Collapse
|
15
|
Energy Metabolism in Cancer: The Roles of STAT3 and STAT5 in the Regulation of Metabolism-Related Genes. Cancers (Basel) 2020; 12:cancers12010124. [PMID: 31947710 PMCID: PMC7016889 DOI: 10.3390/cancers12010124] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/03/2019] [Accepted: 12/12/2019] [Indexed: 12/21/2022] Open
Abstract
A central characteristic of many types of cancer is altered energy metabolism processes such as enhanced glucose uptake and glycolysis and decreased oxidative metabolism. The regulation of energy metabolism is an elaborate process involving regulatory proteins such as HIF (pro-metastatic protein), which reduces oxidative metabolism, and some other proteins such as tumour suppressors that promote oxidative phosphorylation. In recent years, it has been demonstrated that signal transducer and activator of transcription (STAT) proteins play a pivotal role in metabolism regulation. STAT3 and STAT5 are essential regulators of cytokine- or growth factor-induced cell survival and proliferation, as well as the crosstalk between STAT signalling and oxidative metabolism. Several reports suggest that the constitutive activation of STAT proteins promotes glycolysis through the transcriptional activation of hypoxia-inducible factors and therefore, the alteration of mitochondrial activity. It seems that STAT proteins function as an integrative centre for different growth and survival signals for energy and respiratory metabolism. This review summarises the functions of STAT3 and STAT5 in the regulation of some metabolism-related genes and the importance of oxygen in the tumour microenvironment to regulate cell metabolism, particularly in the metabolic pathways that are involved in energy production in cancer cells.
Collapse
|
16
|
Heyba M, Al-Abdullah L, Henkel AW, Sayed Z, Malatiali SA, Redzic ZB. Viability and Contractility of Rat Brain Pericytes in Conditions That Mimic Stroke; an in vitro Study. Front Neurosci 2019; 13:1306. [PMID: 31866815 PMCID: PMC6906154 DOI: 10.3389/fnins.2019.01306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 11/21/2019] [Indexed: 12/12/2022] Open
Abstract
Reopening of the cerebral artery after occlusion often results in “no-reflow” that has been attributed to the death and contraction (rigor mortis) of pericytes. Since this hypothesis still needs to be confirmed, we explored the effects of oxygen glucose deprivation (OGD) on viability and cell death of primary rat pericytes, in the presence or absence of neurovascular unit-derived cytokines. Two morphodynamic parameters, single cell membrane mobility (SCMM) and fractal dimension (Df), were used to analyze the cell contractions and membrane complexity before and after OGD. We found a marginal reduction in cell viability after 2–6 h OGD; 24 h OGD caused a large reduction in viability and a large increase in the number of apoptotic and dead cells. Application of erythropoietin (EPO), or a combination of EPO and endothelial growth factor (VEGFA1−165) during OGD significantly reduced cell viability; application of Angiopoietin 1 (Ang1) during OGD caused a marginal, insignificant increase in cell viability. Simultaneous application of EPO, VEGFA1−165, and Ang1 significantly increased cell viability during 24 h OGD. Twenty minutes and one hour OGD both significantly reduced SCMM compared to pre-OGD values, while no significant difference was seen in SCMM before and after 3 h OGD. There was a significant decrease in membrane complexity (Df) at 20 min during the OGD that disappeared thereafter. In conclusion, OGD transiently affected cell mobility and shape, which was followed by apoptosis in cultured pericytes. Ang1 may have a potentiality for preventing from the OGD-induced apoptosis. Further studies could clarify the relationship between cell contraction and apoptosis during OGD.
Collapse
Affiliation(s)
- Mohammed Heyba
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Lulwa Al-Abdullah
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Andreas W Henkel
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Zeinab Sayed
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Slava A Malatiali
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Zoran B Redzic
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| |
Collapse
|
17
|
Geranmayeh MH, Rahbarghazi R, Farhoudi M. Targeting pericytes for neurovascular regeneration. Cell Commun Signal 2019; 17:26. [PMID: 30894190 PMCID: PMC6425710 DOI: 10.1186/s12964-019-0340-8] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 03/13/2019] [Indexed: 02/06/2023] Open
Abstract
Pericytes, as a key cellular part of the blood-brain barrier, play an important role in the maintenance of brain neurovascular unit. These cells participate in brain homeostasis by regulating vascular development and integrity mainly through secreting various factors. Pericytes per se show different restorative properties after blood-brain barrier injury. Upon the occurrence of brain acute and chronic diseases, pericytes provoke immune cells to regulate neuro-inflammatory conditions. Loss of pericytes in distinct neurologic disorders intensifies blood-brain barrier permeability and leads to vascular dementia. The therapeutic potential of pericytes is originated from the unique morphological shape, location, and their ability in providing vast paracrine and juxtacrine interactions. A subset of pericytes possesses multipotentiality and exhibit trans-differentiation capacity in the context of damaged tissue. This review article aimed to highlight the critical role of pericytes in restoration of the blood-brain barrier after injury by focusing on the dynamics of pericytes and cross-talk with other cell types.
Collapse
Affiliation(s)
- Mohammad Hossein Geranmayeh
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center (NSRC), Imam Reza Medical Center, Tabriz University of Medical Sciences, Golgasht St., Azadi Ave, Tabriz, 5166614756, Iran
| | - Reza Rahbarghazi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mehdi Farhoudi
- Neurosciences Research Center (NSRC), Imam Reza Medical Center, Tabriz University of Medical Sciences, Golgasht St., Azadi Ave, Tabriz, 5166614756, Iran.
| |
Collapse
|