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Wang Y, Shen J, Hu J, Yin H, Chen Z, Fang X, Zhang L. Investigation of the Role of Carcinoembryonic Antigen-Related Cell Adhesion Molecule-1 in Diabetic Retinopathy. Ocul Immunol Inflamm 2024; 32:1024-1035. [PMID: 37023410 DOI: 10.1080/09273948.2023.2192272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 04/08/2023]
Abstract
PURPOSE Diabetic retinopathy (DR) has become a major cause of blindness with increased prevalence of diabetic mellitus. Carcinoembryonic antigen-related cell adhesion molecule-1 (CEACAM1) plays a part in pathological neovascularization. This study aimed to investigate the role of CEACAM1 in the progression of DR. METHODS Aqueous and vitreous samples were collected from proliferative or non-proliferative DR and the control group. Multiplex fluorescent bead-based immunoassays were used to detect the levels of Cytokines. Expression of CEACAM1, VEGF, VEGF receptor 2 (VEGFR2) and hypoxia-induced factor-1α (HIF-1α) were detected in human retinal microvascular endothelial cells (HRECs). RESULTS CEACAM1 and VEGF levels were significantly upregulated in PDR group and positively correlated with PDR progression. Expression CEACAM1 and VEGFR2 were increased in HRECs under hypoxic conditions. The HIF-1α/VEGFA/VEGFR2 pathway was blocked by CEACAM1 siRNA in vitro. CONCLUSIONS CEACAM1 might play a role in the pathology of PDR. CEACAM1 might be a therapeutic target for retinal neovasculariztion.
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Affiliation(s)
- Yuanqi Wang
- Department of Ophthalmology, Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China
- Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang, China
| | - Junhui Shen
- Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang, China
| | - Jianghua Hu
- Department of Ophthalmology, Jiande Branch, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Houfa Yin
- Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang, China
| | - Zhiqing Chen
- Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang, China
| | - Xiaoyun Fang
- Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang, China
| | - Li Zhang
- Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang, China
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Tregub PP, Kulikov VP, Ibrahimli I, Tregub OF, Volodkin AV, Ignatyuk MA, Kostin AA, Atiakshin DA. Molecular Mechanisms of Neuroprotection after the Intermittent Exposures of Hypercapnic Hypoxia. Int J Mol Sci 2024; 25:3665. [PMID: 38612476 PMCID: PMC11011936 DOI: 10.3390/ijms25073665] [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: 02/19/2024] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
The review introduces the stages of formation and experimental confirmation of the hypothesis regarding the mutual potentiation of neuroprotective effects of hypoxia and hypercapnia during their combined influence (hypercapnic hypoxia). The main focus is on the mechanisms and signaling pathways involved in the formation of ischemic tolerance in the brain during intermittent hypercapnic hypoxia. Importantly, the combined effect of hypoxia and hypercapnia exerts a more pronounced neuroprotective effect compared to their separate application. Some signaling systems are associated with the predominance of the hypoxic stimulus (HIF-1α, A1 receptors), while others (NF-κB, antioxidant activity, inhibition of apoptosis, maintenance of selective blood-brain barrier permeability) are mainly modulated by hypercapnia. Most of the molecular and cellular mechanisms involved in the formation of brain tolerance to ischemia are due to the contribution of both excess carbon dioxide and oxygen deficiency (ATP-dependent potassium channels, chaperones, endoplasmic reticulum stress, mitochondrial metabolism reprogramming). Overall, experimental studies indicate the dominance of hypercapnia in the neuroprotective effect of its combined action with hypoxia. Recent clinical studies have demonstrated the effectiveness of hypercapnic-hypoxic training in the treatment of childhood cerebral palsy and diabetic polyneuropathy in children. Combining hypercapnic hypoxia with pharmacological modulators of neuro/cardio/cytoprotection signaling pathways is likely to be promising for translating experimental research into clinical medicine.
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Affiliation(s)
- Pavel P. Tregub
- Department of Pathophysiology, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia;
- Brain Science Institute, Research Center of Neurology, 125367 Moscow, Russia
- Scientific and Educational Resource Center “Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis”, RUDN University, 117198 Moscow, Russia; (A.V.V.); (M.A.I.); (A.A.K.); (D.A.A.)
| | - Vladimir P. Kulikov
- Department of Ultrasound and Functional Diagnostics, Altay State Medical University, 656040 Barnaul, Russia;
| | - Irada Ibrahimli
- Department of Pathophysiology, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia;
| | | | - Artem V. Volodkin
- Scientific and Educational Resource Center “Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis”, RUDN University, 117198 Moscow, Russia; (A.V.V.); (M.A.I.); (A.A.K.); (D.A.A.)
| | - Michael A. Ignatyuk
- Scientific and Educational Resource Center “Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis”, RUDN University, 117198 Moscow, Russia; (A.V.V.); (M.A.I.); (A.A.K.); (D.A.A.)
| | - Andrey A. Kostin
- Scientific and Educational Resource Center “Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis”, RUDN University, 117198 Moscow, Russia; (A.V.V.); (M.A.I.); (A.A.K.); (D.A.A.)
| | - Dmitrii A. Atiakshin
- Scientific and Educational Resource Center “Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis”, RUDN University, 117198 Moscow, Russia; (A.V.V.); (M.A.I.); (A.A.K.); (D.A.A.)
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Dery KJ, Kojima H, Kageyama S, Kadono K, Hirao H, Cheng B, Zhai Y, Farmer DG, Kaldas FM, Yuan X, Eltzschiasg HK, Kupiec-Weglinski JW. Alternative splicing of CEACAM1 by hypoxia-inducible factor-1α enhances tolerance to hepatic ischemia in mice and humans. Sci Transl Med 2023; 15:eadf2059. [PMID: 37531413 PMCID: PMC11164245 DOI: 10.1126/scitranslmed.adf2059] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 07/13/2023] [Indexed: 08/04/2023]
Abstract
Although alternative splicing (AS) drives transcriptional responses and cellular adaptation to environmental stresses, its contributions in organ transplantation have not been appreciated. We have shown that carcinoembryonic antigen-related cell adhesion molecule (Ceacam1; CD66a), a transmembrane biliary glycoprotein expressed in epithelial, endothelial, and immune cells, determines donor liver transplant quality. Here, we studied how AS of Ceacam1 affects ischemia-reperfusion injury (IRI) in mouse and human livers. We found that the short cytoplasmic isoform Ceacam1-S increased during early acute and late resolution phases of warm IRI injury in mice. Transfection of Ceacam1-deficient mouse hepatocytes with adenoviral Ceacam1-S mitigated hypoxia-induced loss of cellular adhesion by repressing the Ask1/p-p38 cell death pathway. Nucleic acid-blocking morpholinos, designed to selectively induce Ceacam1-S, protected hepatocyte cultures against temperature-induced stress in vitro. Luciferase and chromatin immunoprecipitation assays identified direct binding of hypoxia-inducible factor-1α (Hif-1α) to the mouse polypyrimidine tract binding protein 1 (Ptbp1) promoter region. Dimethyloxalylglycine protected mouse livers from warm IR stress and hepatocellular damage by inhibiting prolyl hydroxylase domain-containing protein 1 and promoting AS of Ceacam1-S. Last, analysis of 46 human donor liver grafts revealed that CEACAM1-S positively correlated with pretransplant HIF1A expression. This also correlated with better transplant outcomes, including reduced TIMP1, total bilirubin, proinflammatory MCP1, CXCL10 cytokines, immune activation markers IL17A, and incidence of delayed complications from biliary anastomosis. This translational study identified mouse Hif-1α-controlled AS of Ceacam1, through transcriptional regulation of Ptbp1 promoter region, as a functional underpinning of hepatoprotection against IR stress and tissue damage in liver transplantation.
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Affiliation(s)
- Kenneth J. Dery
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Hidenobu Kojima
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Shoichi Kageyama
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Kentaro Kadono
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Hirofumi Hirao
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Brian Cheng
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Yuan Zhai
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Douglas G. Farmer
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Fady M. Kaldas
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
| | - Xiaoyi Yuan
- Department of Anesthesiology, McGovern Medical School at UTHealth; Houston, TX, 77030 USA
| | - Holger K. Eltzschiasg
- Department of Anesthesiology, McGovern Medical School at UTHealth; Houston, TX, 77030 USA
| | - Jerzy W. Kupiec-Weglinski
- The Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation; David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095 USA
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Permissive hypercapnia and hypercapnic hypoxia inhibit signaling pathways of neuronal apoptosis in ischemic/hypoxic rats. Mol Biol Rep 2023; 50:2317-2333. [PMID: 36575322 DOI: 10.1007/s11033-022-08212-4] [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: 06/26/2022] [Accepted: 12/13/2022] [Indexed: 12/29/2022]
Abstract
INTRODUCTION In the present study, we aimed to test the hypothesis that hypercapnia, independently and/or in combination with hypoxia, can activate signaling pathways related to the inhibition of proapoptotic (caspase-dependent and caspase-independent) factors and the induction of antiapoptotic factors in facilitating adaptation to hypoxia/ischemia. MATERIALS AND METHODS Following exposure to permissive hypercapnia and/or normobaric hypoxia, the degree of apoptosis was evaluated in experimental ischemia models in vivo and in vitro. The percentages of caspase-3, apoptosis-inducing factor (AIF), Bax, and Bcl-2 in astrocytes and neurons derived from male Wistar rats were also calculated. In vitro, cells were subjected to various types of respiratory exposure (hypoxia and/or hypercapnia for 24 or 12 h) as well as further sublethal chemical hypoxia. The percentages of these molecules in nerve cells in the ischemic penumbra of the brain after photothrombotic injury were also calculated. RESULTS The degree of apoptosis was found to decrease in ischemic penumbra, mostly due to the hypercapnic component. It was also discovered that the levels of caspase-3, AIF, and Bax decreased in this region, whereas the Bcl-2 levels increased following exposure to hypercapnia and hypercapnic hypoxia. CONCLUSIONS This integrative assessment of the rate of apoptosis/necrosis in astrocyte and neuron cultures shows that the combination of hypercapnia and hypoxia resulted in the maximum neuroprotective effect. The levels of apoptosis mediators in astrocyte and neuron cultures were calculated after modeling chemical hypoxia in vitro. These results show that the exposure models where permissive hypercapnia and normobaric hypoxia were combined also had the most pronounced inhibitory effects on apoptotic signaling pathways.
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Patel JC, Singh A, Tulswani R, Sharma YK, Khurana P, Ragumani S. Identification of VEGFA-centric temporal hypoxia-responsive dynamic cardiopulmonary network biomarkers. Life Sci 2021; 281:119718. [PMID: 34147483 DOI: 10.1016/j.lfs.2021.119718] [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: 02/23/2021] [Revised: 05/31/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
AIMS Hypoxia, a pathophysiological condition, is profound in several cardiopulmonary diseases (CPD). Every individual's lethality to a hypoxia state differs in terms of hypoxia exposure time, dosage units and dependent on the individual's genetic makeup. Most of the proposed markers for CPD were generally aim to distinguish disease samples from normal samples. Although, as per the 2018 GOLD guidelines, clinically useful biomarkers for several cardio pulmonary disease patients in stable condition have yet to be identified. We attempt to address these key issues through the identification of Dynamic Network Biomarkers (DNB) to detect hypoxia induced early warning signals of CPD before the catastrophic deterioration. MATERIALS AND METHODS The human microvascular endothelial tissues microarray datasets (GSE11341) of lung and cardiac expose to hypoxia (1% O2) for 3, 24 and 48 h were retrieved from the public repository. The time dependent differentially expressed genes were subjected to tissue specificity and promoter analysis to filtrate the noise levels in the networks and to dissect the tissue specific hypoxia induced genes. These filtered out genes were used to construct the dynamic segmentation networks. The hypoxia induced dynamic differentially expressed genes were validated in the lung and heart tissues of male rats. These rats were exposed to hypobaric hypoxia (simulated altitude of 25,000 or PO2 - 282 mm of Hg) progressively for 3, 24 and 48 h. KEY FINDINGS To identify the temporal key genes regulated in hypoxia, we ranked the dominant genes based on their consolidated topological features from tissue specific networks, time dependent networks and dynamic networks. Overall topological ranking described VEGFA as a single node dynamic hub and strongly communicated with tissue specific genes to carry forward their tissue specific information. We named this type of VEGFAcentric dynamic networks as "V-DNBs". As a proof of principle, our methodology helped us to identify the V-DNBs specific for lung and cardiac tissues namely V-DNBL and V-DNBC respectively. SIGNIFICANCE Our experimental studies identified VEGFA, SLC2A3, ADM and ENO2 as the minimum and sufficient candidates of V-DNBL. The dynamic expression patterns could be readily exploited to capture the pre disease state of hypoxia induced pulmonary vascular remodelling. Whereas in V-DNBC the minimum and sufficient candidates are VEGFA, SCL2A3, ADM, NDRG1, ENO2 and BHLHE40. The time dependent single node expansion indicates V-DNBC could also be the pre disease state pathological hallmark for hypoxia-associated cardiovascular remodelling. The network cross-talk and expression pattern between V-DNBL and V-DNBC are completely distinct. On the other hand, the great clinical advantage of V-DNBs for pre disease predictions, a set of samples during the healthy condition should suffice. Future clinical studies might further shed light on the predictive power of V-DNBs as prognostic and diagnostic biomarkers for CPD.
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Affiliation(s)
- Jai Chand Patel
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Ajeet Singh
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Rajkumar Tulswani
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Yogendra Kumar Sharma
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Pankaj Khurana
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India
| | - Sugadev Ragumani
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organization, Lucknow Road, Timarpur, Delhi, India.
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Hypercapnia Modulates the Activity of Adenosine A1 Receptors and mitoK +ATP-Channels in Rat Brain When Exposed to Intermittent Hypoxia. Neuromolecular Med 2021; 24:155-168. [PMID: 34115290 DOI: 10.1007/s12017-021-08672-0] [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: 11/15/2020] [Accepted: 06/05/2021] [Indexed: 10/21/2022]
Abstract
The mechanisms and signaling pathways of the neuroprotective effects of hypercapnia and its combination with hypoxia are not studied sufficiently. The study aims to test the hypothesis of the potentiating effect of hypercapnia on the systems of adaptation to hypoxia, directly associated with A1-adenosine receptors and mitochondrial ATP-dependent K+ -channels (mitoK+ATP-channels). We evaluated the relative number of A1-adenosine receptors and mitoK+ATP-channels in astrocytes obtained from male Wistar rats exposed to various respiratory conditions (15 times of hypoxia and/or hypercapnia). In addition, the relative number of these molecules in astrocytes was evaluated on an in vitro model of chemical hypoxia, as well as in the cerebral cortex after photothrombotic damage. This study indicates an increase in the relative number of A1-adenosine receptors in astrocytes and in cells next to the stroke region of the cerebral cortex in rats exposed to hypoxia and hypercapnic hypoxia, but not hypercapnia alone. Hypercapnia and hypoxia increase the relative number of mitoK+ATP-channels in astrocytes and in cells of the peri-infarct region of the cerebral cortex in rats. In an in vitro study, hypercapnia mitigates the effects of acute chemical hypoxia observed in astrocytes for A1-adenosine receptors and mitoK+ATP-channels. Hypercapnia, unlike hypoxia, does not affect the relative number of A1 receptors to adenosine. At the same time, both hypercapnia and hypoxia increase the relative number of mitoK+ATP-channels, which can potentiate their protective effects with combined exposure.
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Tregub PP, Malinovskaya NA, Morgun AV, Osipova ED, Kulikov VP, Kuzovkov DA, Kovzelev PD. Hypercapnia potentiates HIF-1α activation in the brain of rats exposed to intermittent hypoxia. Respir Physiol Neurobiol 2020; 278:103442. [DOI: 10.1016/j.resp.2020.103442] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/19/2020] [Accepted: 04/06/2020] [Indexed: 12/30/2022]
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Hypercapnic hypoxia as a potential means to extend life expectancy and improve physiological activity in mice. Biogerontology 2019; 20:677-686. [DOI: 10.1007/s10522-019-09821-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/10/2019] [Indexed: 01/09/2023]
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Zhou J, Huang X, Jiang X. Effects of Obstructive Sleep Apnea-Hypopnea Syndrome on Serum Carcinoembryonic Antigen Levels in Patients with Type 2 Diabetes Mellitus. Med Sci Monit 2019; 25:3558-3565. [PMID: 31086125 PMCID: PMC6530438 DOI: 10.12659/msm.913713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background Type 2 diabetes mellitus (T2DM) is related to the serum carcinoembryonic antigen (CEA) level, which is used as a marker of colorectal cancer. Obstructive sleep apnea-hypopnea syndrome (OSAS) has been recently reported to have cancer-promoting effects. The aim of our study was to observe the effect of OSAS on serum levels of CEA in patients with T2DM. Material/Methods We enrolled 401 T2DM patients in this study. There were 244 patients with OSAS and 157 patients without OSAS. Results The CEA level in T2DM patients with OSAS was higher than that in those without OSAS (p<0.05). The participants with AHI scores ≥30 had higher CEA levels than those with 5≤ AHI scores <30 (p<0.05). The AHI score and ODI score were independently associated with increased risk of high CEA level in T2DM patients (odds ratio [OR]=1.052, 95% confidence interval [CI]: 1.011~1.095) and (OR=1.214, 95% CI: 1.070~1.377). Moreover, among male T2DM patients, the AHI score and ODI score had a linear correlation with the CEA level; this association was also observed in T2DM patients who smoked, had an HbA1c level ≥7%, or had a BMI ≥28 kg/m2 (all p<0.05). Conclusions The AHI score and ODI score were positively associated with the CEA level in T2DM patients. The relationship was stronger in male T2DM patients and in those who smoked, were obese, or had poor glycemic control. The mechanism may be related to metabolic disorders, and the potential increased risk of colorectal cancer should be investigated in a prospective study.
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Affiliation(s)
- Jiayan Zhou
- Department of Endocrinology, First People's Hospital of Changzhou, Changzhou, Jiangsu, China (mainland)
| | - Xiaolin Huang
- Department of Endocrinology, First People's Hospital of Changzhou, Changzhou, Jiangsu, China (mainland)
| | - Xiaohong Jiang
- Department of Endocrinology, First People's Hospital of Changzhou, Changzhou, Jiangsu, China (mainland)
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Xie Q, Chen X, Xu Y, Liang J, Wang F, Liu J. CEACAM1 resists hypoxia-induced inhibition of tube formation of human dermal lymphatic endothelial cells. Cell Signal 2018; 45:145-152. [PMID: 29427637 DOI: 10.1016/j.cellsig.2018.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 02/04/2018] [Accepted: 02/06/2018] [Indexed: 11/30/2022]
Abstract
Tube formation is one of the fundamental events required by angiogenesis and lymphangiogenesis. To date, there is little knowledge on the effects of hypoxia on tube formation of human dermal lymphatic endothelial cells (HDLECs). In this study, we found that tube formation of HDLECs was inhibited under hypoxic condition with decreased expressions of VEGF-D, CEACAM1 and Prox1 genes. However, hypoxia-induced inhibition of tube formation of HDLECs was reversed by conditional media from hypoxic tumor cells. After knockdown of CEACAM1 by siRNA transfection, tube formation of HDLECs was increased with elevated Prox1 expression, suggesting that CEACAM1 downregulates Prox1 and plays an inhibitory role in tube formation of HDLECs. Since the expressions of CEACAM1 and Prox1 were both decreased by hypoxia, there are additional mechanisms downregulating Prox1 expressions during hypoxia-inhibited tube formation of HDLECs.
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Affiliation(s)
- Qi Xie
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Xiaocui Chen
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Yinghua Xu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Jing Liang
- Department of Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Fufang Wang
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, PR China; Key laboratory of Cardiovascular Proteomics of Shandong Province, Jinan, Shandong 250012, PR China
| | - Ju Liu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China.
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Dong B, Zhang Z, Xie K, Yang Y, Shi Y, Wang C, Yu Y. Hemopexin promotes angiogenesis via up-regulating HO-1 in rats after cerebral ischemia-reperfusion injury. BMC Anesthesiol 2018; 18:2. [PMID: 29298658 PMCID: PMC5751849 DOI: 10.1186/s12871-017-0466-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 12/21/2017] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Ischemia-reperfusion (I/R) is a critical pathophysiological change of ischemic stroke. Heme-oxygenase-1 (HO-1) is a rate-limiting enzyme of eliminating excessive free heme by combining with hemopexin (HPX), a plasma protein contributing to alleviating infarct size due to ischemia stroke. This study was to investigate whether HPX could improve angiogenesis after cerebral ischemia-reperfusion via up-regulating HO-1. METHODS Rats were randomly divided into five groups: sham, MCAO, MCAO + Vehicle, MCAO + HPX and MCAO + HPX + protoporphyrin IX (ZnPPIX, an HO-1 inhibitor). Cerebral I/R was induced by MCAO. Saline, vehicle, HPX and HPX + ZnPPIX were respectively given to MCAO group, MCAO + Vehicle group, MCAO + HPX group and MCAO + HPX + ZnPPIX group at the moment after reperfusion by intracerebroventricular injection. Neurological behavioral scores(NBS) was assessed at 24 h and 7d after I/R. Real-time polymerase chain reaction (RT-PCR) was used to analyze the mRNA level of HO-1. Angiogenesis in penumbra area was assessed by immunofluorescence detection at 7d after I/R. Serum endothelial nitric oxide synthase (eNOS) was assessed by enzyme linked immunosorbent assay (ELISA) at 24 h and 7d after I/R. RESULTS Compared with sham group, the NBS and the mRNA levels of HO-1 at 24 h and 7d after I/R in MCAO group decreased notably (P < 0.05), the new vessel density in ischemia penumbra increased notably at 7d after I/R (P < 0.05), the serum eNOS level increased at 24 h and 7d after I/R (P < 0.05). MCAO group and MCAO + Vehicle group showed no significant differences (P > 0.05). In the MCAO + HPX group, compared with MCAO + Vehicle group, the NBS and the mRNA levels of HO-1 increased drastically at 24 h and 7d after I/R (P < 0.05), the new vessel density in ischemia penumbra increased significantly at 7d after I/R (P < 0.05), the serum eNOS level at 24 h and 7d after I/R ascended notably (P < 0.05). Compared with MCAO + HPX group, the NBS assessment, new vessel density and serum eNOS level decreased at corresponding time points after I/R in MCAO + HPX+ ZnPPIX group (P < 0.05). CONCLUSION HPX can promote angiogenesis after cerebral ischemia-reperfusion injury in rats via up-regulating HO-1.
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Affiliation(s)
- Beibei Dong
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, General Hospital of Tianjin Medical University, No. 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China
| | - Zhishen Zhang
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, General Hospital of Tianjin Medical University, No. 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China
| | - Keliang Xie
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, General Hospital of Tianjin Medical University, No. 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China.
| | - Yongyan Yang
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, General Hospital of Tianjin Medical University, No. 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China
| | - Yuan Shi
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, General Hospital of Tianjin Medical University, No. 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China
| | - Chenxu Wang
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, General Hospital of Tianjin Medical University, No. 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China
| | - Yonghao Yu
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, General Hospital of Tianjin Medical University, No. 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China.
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12
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de Preux Charles AS, Bise T, Baier F, Sallin P, Jaźwińska A. Preconditioning boosts regenerative programmes in the adult zebrafish heart. Open Biol 2017; 6:rsob.160101. [PMID: 27440423 PMCID: PMC4967829 DOI: 10.1098/rsob.160101] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 06/20/2016] [Indexed: 12/22/2022] Open
Abstract
During preconditioning, exposure to a non-lethal harmful stimulus triggers a body-wide increase of survival and pro-regenerative programmes that enable the organism to better withstand the deleterious effects of subsequent injuries. This phenomenon has first been described in the mammalian heart, where it leads to a reduction of infarct size and limits the dysfunction of the injured organ. Despite its important clinical outcome, the actual mechanisms underlying preconditioning-induced cardioprotection remain unclear. Here, we describe two independent models of cardiac preconditioning in the adult zebrafish. As noxious stimuli, we used either a thoracotomy procedure or an induction of sterile inflammation by intraperitoneal injection of immunogenic particles. Similar to mammalian preconditioning, the zebrafish heart displayed increased expression of cardioprotective genes in response to these stimuli. As zebrafish cardiomyocytes have an endogenous proliferative capacity, preconditioning further elevated the re-entry into the cell cycle in the intact heart. This enhanced cycling activity led to a long-term modification of the myocardium architecture. Importantly, the protected phenotype brought beneficial effects for heart regeneration within one week after cryoinjury, such as a more effective cell-cycle reentry, enhanced reactivation of embryonic gene expression at the injury border, and improved cell survival shortly after injury. This study reveals that exposure to antecedent stimuli induces adaptive responses that render the fish more efficient in the activation of the regenerative programmes following heart damage. Our results open a new field of research by providing the adult zebrafish as a model system to study remote cardiac preconditioning.
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Affiliation(s)
| | - Thomas Bise
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland
| | - Felix Baier
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland
| | - Pauline Sallin
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland
| | - Anna Jaźwińska
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700 Fribourg, Switzerland
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13
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Markel G, Imazio M, Koren-Morag N, Galore-Haskel G, Schachter J, Besser M, Cumetti D, Maestroni S, Altman A, Shoenfeld Y, Brucato A, Adler Y. CEACAM1 and MICA as novel serum biomarkers in patients with acute and recurrent pericarditis. Oncotarget 2017; 7:17885-95. [PMID: 26909604 PMCID: PMC4951257 DOI: 10.18632/oncotarget.7530] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 01/23/2016] [Indexed: 11/25/2022] Open
Abstract
Background The immune response plays a significant role in pericarditis, but the mechanisms of disease are poorly defined. Further, efficient monitoring and predictive clinical tools are unavailable. Carcinoembryonic antigen cell adhesion molecule 1 (CEACAM1) is an immune-inhibitory protein, while MHC class I chain related protein A (MICA) and B (MICB) have an immune-stimulating function. Methods and results Serum CEACAM1, MICA and MICB concentrations were measured by ELISA in ∼50 subjects of each group: acute pericarditis (AP), recurrent pericarditis (RP) and lupus (SLE) patients, metastatic melanoma patients as well as healthy donors. Serum CEACAM1 was dramatically elevated in AP and RP patients, but not in SLE patients, and displayed a highly accurate profile in ROC curve analyses. MICA and MICB were elevated in some pericarditis patients. All markers were enhanced in metastatic melanoma patients irrespective of neoplastic pericardial involvement. Etiology-guided analysis of RP patients showed that very low MICA levels were associated with idiopathic RP, while high MICA was associated with autoimmune and post-operative RP. Importantly, MICA was significantly associated with recurrences, independently of other potentially confounding parameters such as age, time of follow up or treatment modality. Conclusions Here we report for the first time on CEACAM1 as a potentially novel biomarker for pericarditis, as well as on MICA as an innovative prognostic marker in these patients. Determination of the roles of these immune factors, as well as their diagnostic and prognostic values should be determined in future prospective studies.
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Affiliation(s)
- Gal Markel
- Ella Lemelbaum Institute of Melanoma, Sheba Medical Center, Tel Hashomer, Israel.,Talpiot Medical Leadership Program, Sheba Medical Center, Tel Hashomer, Israel.,Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Massimo Imazio
- Cardiology Department, Maria Vittoria Hospital, Torino, Italy
| | - Nira Koren-Morag
- Department of Epidemiology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gilli Galore-Haskel
- Ella Lemelbaum Institute of Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Jacob Schachter
- Ella Lemelbaum Institute of Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Michal Besser
- Ella Lemelbaum Institute of Melanoma, Sheba Medical Center, Tel Hashomer, Israel.,Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | | | - Arie Altman
- Internal Medicine B, Sheba Medical Center, Tel Hashomer, Israel
| | - Yehuda Shoenfeld
- Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel Hashomer, Israel
| | | | - Yehuda Adler
- Talpiot Medical Leadership Program, Sheba Medical Center, Tel Hashomer, Israel.,Cardiac Rehabilitation Institute, Sheba Medical Center, Tel Hashomer, Israel.,Department of Internal Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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14
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Rueckschloss U, Kuerten S, Ergün S. The role of CEA-related cell adhesion molecule-1 (CEACAM1) in vascular homeostasis. Histochem Cell Biol 2016; 146:657-671. [PMID: 27695943 DOI: 10.1007/s00418-016-1505-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2016] [Indexed: 12/11/2022]
Abstract
Carcinoembryonic antigen (CEA)-related cell adhesion molecules belong to the immunoglobulin superfamily, are expressed in a broad spectrum of tissues and cell types and exert context-dependent activating as well as inhibitory effects. Among these molecules, the CEA-related cell adhesion molecule-1 (CEACAM1) is a transmembrane molecule with an extracellular, a transmembrane and a cytoplasmic domain. The latter contains immunoreceptor tyrosine-based inhibitory motifs and functions as a signaling molecule. CEACAM1 can form homo- and heterodimers which is relevant for its signaling activities. CEACAM1 acts as co-receptor that modulates the activity of different receptor types including VEGFR-2, and B and T cell receptors. CEACAM1 is expressed in endothelial cells, in pericytes of developing and newly formed immature blood vessels and in angiogenically activated adult vessels, e.g., tumor blood vessels. However, it is either undetectable or only weakly expressed in quiescent blood vessels. Recent studies indicated that CEACAM1 is involved in the regulation of the endothelial barrier function. In CEACAM1 -/- mice, increased vascular permeability and development of small atherosclerotic lesions was observed in the aortae. CEACAM1 is also detectable in activated lymphatic endothelial cells and plays a role in tumor lymphangiogenesis. This review summarizes the vascular effects of CEACAM1 and focuses on its role in vascular morphogenesis and endothelial barrier regulation.
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Affiliation(s)
- Uwe Rueckschloss
- Institute of Anatomy and Cell Biology, University of Würzburg, Köllikerstrasse 6, 97070, Würzburg, Germany
| | - Stefanie Kuerten
- Institute of Anatomy and Cell Biology, University of Würzburg, Köllikerstrasse 6, 97070, Würzburg, Germany
| | - Süleyman Ergün
- Institute of Anatomy and Cell Biology, University of Würzburg, Köllikerstrasse 6, 97070, Würzburg, Germany.
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15
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Crnkovic S, Schmidt A, Egemnazarov B, Wilhelm J, Marsh LM, Ghanim B, Klepetko W, Olschewski A, Olschewski H, Kwapiszewska G. Functional and molecular factors associated with TAPSE in hypoxic pulmonary hypertension. Am J Physiol Lung Cell Mol Physiol 2016; 311:L59-73. [PMID: 27106290 DOI: 10.1152/ajplung.00381.2015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 04/17/2016] [Indexed: 01/11/2023] Open
Abstract
Adaptation of the right ventricle (RV) to increased afterload is crucial for survival in pulmonary hypertension (PH), but it is challenging to assess RV function and identify associated molecular mechanisms. The aim of the current study was to analyze the relationship between invasive and noninvasive parameters of RV morphology and function and associated molecular changes. The response of mice to normobaric hypoxia was assessed by hechocardiography, invasive hemodynamics, and histological and molecular analyses. Plasma levels of possibly novel markers of RV remodeling were measured by ELISA in patients with idiopathic pulmonary arterial hypertension (IPAH) and matched healthy controls. Chronic hypoxia-induced PH was accompanied by significantly decreased tricuspid annular plane systolic excursion (TAPSE) and unchanged RV contractility index and tau. RV hypertrophy was present without an increase in fibrosis. There was no change in α- and β-major histocompatibility class or natriuretic peptides expression. Comparative microarray analysis identified two soluble factors, fibroblast growth factor-5 (FGF5) and interleukin-22 receptor alpha-2 (IL22RA2), as being possibly associated with RV remodeling. We observed significantly higher plasma levels of IL22RA2, but not FGF5, in patients with IPAH. Hypoxic pulmonary hypertension in a stage of RV remodeling with preserved systolic function is associated with decreased pulmonary vascular compliance, mild diastolic RV dysfunction, and significant decrease in TAPSE. Subtle gene expression changes in the RV vs. the left ventricle upon chronic hypoxia suggest that the majority of changes are due to hypoxia and not due to changes in afterload. Increased IL22RA2 levels might represent a novel RV adaptive mechanism.
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Affiliation(s)
- Slaven Crnkovic
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria; Department of Experimental Anaesthesiology, Medical University of Graz, Graz, Austria
| | - Albrecht Schmidt
- Division of Cardiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | | | - Jochen Wilhelm
- Department of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Leigh M Marsh
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Bahil Ghanim
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria; Department of Thoracic Surgery, Medical University of Vienna/Vienna General Hospital, Vienna, Austria
| | - Walter Klepetko
- Department of Thoracic Surgery, Medical University of Vienna/Vienna General Hospital, Vienna, Austria
| | - Andrea Olschewski
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria; Department of Experimental Anaesthesiology, Medical University of Graz, Graz, Austria
| | - Horst Olschewski
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria; and
| | - Grazyna Kwapiszewska
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria; Department of Experimental Anaesthesiology, Medical University of Graz, Graz, Austria
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16
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Wang Y, Chen Y, Yan Y, Li X, Chen G, He N, Shen S, Chen G, Zhang C, Liao W, Liao Y, Bin J. Loss of CEACAM1, a Tumor-Associated Factor, Attenuates Post-infarction Cardiac Remodeling by Inhibiting Apoptosis. Sci Rep 2016; 6:21972. [PMID: 26911181 PMCID: PMC4766464 DOI: 10.1038/srep21972] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 01/29/2016] [Indexed: 12/30/2022] Open
Abstract
Carcinoembryonic antigen-related cell adhesion molecule1 (CEACAM1) is a tumor-associated factor that is known to be involved in apoptosis, but the role of CEACAM1 in cardiovascular disease is unclear. We aims to investigate whether CEACAM1 influences cardiac remodeling in mice with myocardial infarction (MI) and hypoxia-induced cardiomyocyte injury. Both serum in patients and myocardial CEACAM1 levels in mice were significantly increased in response to MI, while levels were elevated in neonatal rat cardiomyocytes (NRCs) exposed to hypoxia. Eight weeks after MI, a lower mortality rate, improved cardiac function, and less cardiac remodeling in CEACAM1 knock-out (KO) mice than in their wild-type (WT) littermates were observed. Moreover, myocardial expression of mitochondrial Bax, cytosolic cytochrome C, and cleaved caspase-3 was significantly lower in CEACAM1 KO mice than in WT mice. In cultured NRCs exposed to hypoxia, recombinant human CEACAM1 (rhCEACAM1) reduced mitochondrial membrane potential, upregulated mitochondrial Bax, increased cytosolic cytochrome C and cleaved caspase-3, and consequently increased apoptosis. RhCEACAM1 also increased the levels of GRP78 and CHOP in NRCs with hypoxia. All of these effects were abolished by silencing CEACAM1. Our study indicates that CEACAM1 exacerbates hypoxic cardiomyocyte injury and post-infarction cardiac remodeling by enhancing cardiomyocyte mitochondrial dysfunction and endoplasmic reticulum stress-induced apoptosis.
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Affiliation(s)
- Yan Wang
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yanmei Chen
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yi Yan
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Xinzhong Li
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Guojun Chen
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Nvqin He
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Shuxin Shen
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.,Department of Cardiology, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, 450003, China
| | - Gangbin Chen
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Chuanxi Zhang
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Wangjun Liao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yulin Liao
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jianping Bin
- State Key Laboratory of Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
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Merkt W, Urlaub D, Meinke S, Kammerer R, Watzl C. Inhibition of NKp30- and 2B4-mediated NK cell activation by evolutionary different human and bovine CEACAM1 receptors. Eur J Immunol 2015; 45:2134-42. [PMID: 25824372 DOI: 10.1002/eji.201445151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 03/04/2015] [Accepted: 03/26/2015] [Indexed: 11/07/2022]
Abstract
Carcinoembryonicantigen-related cell adhesion molecule 1 (CEACAM1) is a receptor involved in the regulation of NK-cell function. In most species, the CEACAM1 cytoplasmic tail possesses a membrane-proximal ITIM paired with a membrane-distal immunoreceptor tyrosine-based switch motif (ITSM) signaling motif. Human CEACAM1 has phylogenetically relatively recently acquired a second ITIM instead of the ITSM and was shown to inhibit NKG2D-mediated NK-cell activation. Here, we compare the function of bovine and human CEACAM1. We show that in addition to NKG2D, human CEACAM1 can inhibit NK-cell activation via NKp30 or 2B4. Bovine CEACAM1, possessing an ITIM and an ITSM signaling motif, is also inhibitory. However, bovine CEACAM1 inhibition of NKp30-mediated lysis is less pronounced compared with its human counterpart. Bovine CEACAM1 inhibition is dependent on the membrane-proximal ITIM and our data suggest that also the membrane distal ITSM motif contributes to inhibitory signaling. Biochemically, human and bovine CEACAM1 can recruit the phosphatases SHP-1 and SHP-2 after receptor phosphorylation to a similar extend. Bovine CEACAM1 can additionally recruit the adapter molecule Ewing's sarcoma virus-activated transcript-2 (EAT-2), but not SLAM-associated protein (SAP). Taken together, we show that although human and bovine CEACAM1 are differentially equipped with ITIM and ITSM motifs, both receptors can inhibit NKp30 and 2B4 activation of NK cells.
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Affiliation(s)
- Wolfgang Merkt
- Institute for Immunology, University Heidelberg, Heidelberg, Germany.,Division of Rheumatology, Department of Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
| | - Doris Urlaub
- Leibniz Research Center for Working Environment and Human Factors, Dortmund, Germany
| | - Stephan Meinke
- Institute for Immunology, University Heidelberg, Heidelberg, Germany.,Center for Hematology and Regenerative Medicine (HERM), Karolinska Institutet, Stockholm, Sweden
| | - Robert Kammerer
- Institute of Immunology, Friedrich-Loeffler Institute, Greifswald-Insel Riems, Germany
| | - Carsten Watzl
- Institute for Immunology, University Heidelberg, Heidelberg, Germany.,Leibniz Research Center for Working Environment and Human Factors, Dortmund, Germany
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18
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Tregub P, Kulikov V, Motin Y, Bespalov A, Osipov I. Combined exposure to hypercapnia and hypoxia provides its maximum neuroprotective effect during focal ischemic injury in the brain. J Stroke Cerebrovasc Dis 2014; 24:381-7. [PMID: 25498739 DOI: 10.1016/j.jstrokecerebrovasdis.2014.09.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 08/22/2014] [Accepted: 09/05/2014] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND In the present research, we compared the neuroprotective efficiency of combined and isolated exposure to hypoxia and hypercapnia preceding focal cerebral ischemic injury in rats. The study was conducted to verify the hypothesis of a possible increase in normobaric hypoxia (NbH; 90 mm Hg) efficiency when combined with permissive hypercapnia (PH; 50 mm Hg). METHODS The rats from the test groups were subjected to a 15-fold exposure to NbH (90 mm Hg) and/or PH (50 mm Hg). After the 15th exposure, cerebral ischemic injury was induced by photochemical thrombosis. Seventy-two hours later, neurologic deficit was determined on the Neurological Severity Score scale and by the rotarod test, and the volume of cerebral infarction was measured after focal photochemical thrombosis. RESULTS The neurologic deficit decreased most efficiently in rats that underwent PH and hypercapnic hypoxia (HH) exposure, whereas NbH had no impact on the neurologic status of the animals. On the contrary, motor coordination disturbances were minimal during exposure to hypoxia and HH. All respiratory interventions reduced the cerebral ischemic infarction volume in rats. The smallest infarction volumes were registered in the area of photochemical thrombosis in rats from the hypercapnic-hypoxic impact group, whereas exposure to NbH or PH did not show any cross difference. CONCLUSIONS The impact of PH has greater neuroprotective potential compared with NbH. Thus, we can assume that hypercapnia is a predominant factor in providing neuroprotection in combination with hypoxia.
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Affiliation(s)
- Pavel Tregub
- Department of Pathophysiology, Federal Agency for Health and Social Development, Altai State Medical University, Barnaul, Altai Region, Russia.
| | - Vladimir Kulikov
- Department of Pathophysiology, Federal Agency for Health and Social Development, Altai State Medical University, Barnaul, Altai Region, Russia
| | - Yuri Motin
- Department of Histology, Federal Agency for Health and Social Development, Altai State Medical University, Barnaul, Altai Region, Russia
| | - Andrey Bespalov
- Department of Pathophysiology, Federal Agency for Health and Social Development, Altai State Medical University, Barnaul, Altai Region, Russia
| | - Ilya Osipov
- Department of Pathophysiology, Federal Agency for Health and Social Development, Altai State Medical University, Barnaul, Altai Region, Russia
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19
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Poggi A, Musso A, Dapino I, Zocchi MR. Mechanisms of tumor escape from immune system: role of mesenchymal stromal cells. Immunol Lett 2014; 159:55-72. [PMID: 24657523 DOI: 10.1016/j.imlet.2014.03.001] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 03/01/2014] [Accepted: 03/05/2014] [Indexed: 12/12/2022]
Abstract
Tumor microenvironment represents the site where the tumor tries to survive and escape from immune system-mediated recognition. Indeed, to proliferate tumor cells can divert the immune response inducing the generation of myeloid derived suppressor cells and regulatory T cells which can limit the efficiency of effector antitumor lymphocytes in eliminating neoplastic cells. Many components of the tumor microenvironment can serve as a double sword for the tumor and the host. Several types of fibroblast-like cells, which herein we define mesenchymal stromal cells (MSC), secrete extracellular matrix components and surrounding the tumor mass can limit the expansion of the tumor. On the other hand, MSC can interfere with the immune recognition of tumor cells producing immunoregulatory cytokines as transforming growth factor (TGF)ß, releasing soluble ligands of the activating receptors expressed on cytolytic effector cells as decoy molecules, affecting the correct interaction among lymphocytes and tumor cells. MSC can also serve as target for the same anti-tumor effector lymphocytes or simply impede the interaction between these lymphocytes and neoplastic cells. Thus, several evidences point out the role of MSC, both in epithelial solid tumors and hematological malignancies, in regulating tumor cell growth and immune response. Herein, we review these evidences and suggest that MSC can be a suitable target for a more efficient anti-tumor therapy.
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Affiliation(s)
- Alessandro Poggi
- Molecular Oncology and Angiogenesis Unit, IRCCS AOU San Martino IST, 16132 Genoa, Italy.
| | - Alessandra Musso
- Molecular Oncology and Angiogenesis Unit, IRCCS AOU San Martino IST, 16132 Genoa, Italy
| | - Irene Dapino
- Molecular Oncology and Angiogenesis Unit, IRCCS AOU San Martino IST, 16132 Genoa, Italy
| | - Maria Raffaella Zocchi
- Division of Immunology, Transplants and Infectious Diseases, Istituto Scientifico San Raffaele Milan, 20132 Milan, Italy
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20
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Tregub P, Kulikov V, Bespalov A. Tolerance to acute hypoxia maximally increases in case of joint effect of normobaric hypoxia and permissive hypercapnia in rats. ACTA ACUST UNITED AC 2013; 20:165-70. [PMID: 24083870 DOI: 10.1016/j.pathophys.2013.09.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 03/26/2013] [Accepted: 09/07/2013] [Indexed: 11/27/2022]
Abstract
INTRODUCTION We studied the comparative efficacy of independent and combined effects of normobaric hypoxia (90mmHg) and permissive hypercapnia (50mmHg) in increasing the tolerance of rats to acute hypobaric hypoxia. METHODS We determined the time to loss of pose and life duration as a measure to assess the degree of tolerance of animals to hypobaric hypoxia by exposing them to an altitude of 11,500m (barometric=180mmHg). RESULTS Exposure to hypercapnic hypoxia increased the tolerance to acute hypobaric hypoxia compared to exposure to normobaric hypoxia or permissive hypercapnia alone. DISCUSSION The positive effects of hypercapnia and hypercapnic hypoxia occurred after one exposure, and increasing the number of exposures proportionally increased the tolerance to acute hypobaric hypoxia. The effect of permissive hypercapnia on increasing the tolerance to acute hypobaric hypoxia was found to be significantly greater than that of exposure to normobaric hypoxia. Therefore, we propose that hypercapnia is the dominant factor in increasing tolerance to acute hypobaric hypoxia. CONCLUSION Tolerance to acute hypoxia maximally increases in case of joint effect of normobaric hypoxia and permissive hypercapnia.
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Affiliation(s)
- Pavel Tregub
- Department of Pathophysiology, Altai State Medical University, Barnaul, Russia.
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21
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Zhang J, Tao W. WITHDRAWN: Varying levels and function of several biological macromolecules in myocardium. Int J Biol Macromol 2013:S0141-8130(13)00347-4. [PMID: 23811164 DOI: 10.1016/j.ijbiomac.2013.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 06/12/2013] [Accepted: 06/20/2013] [Indexed: 10/26/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- JiaYi Zhang
- The first affiliated hospital of Liaoning Medical College, Jingzhou, 121001, China
| | - Wei Tao
- The first affiliated hospital of Liaoning Medical College, Jingzhou, 121001, China.
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22
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Ludewig P, Sedlacik J, Gelderblom M, Bernreuther C, Korkusuz Y, Wagener C, Gerloff C, Fiehler J, Magnus T, Horst AK. Carcinoembryonic antigen-related cell adhesion molecule 1 inhibits MMP-9-mediated blood-brain-barrier breakdown in a mouse model for ischemic stroke. Circ Res 2013; 113:1013-22. [PMID: 23780386 DOI: 10.1161/circresaha.113.301207] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
RATIONALE Blood-brain-barrier (BBB) breakdown and cerebral edema result from postischemic inflammation and contribute to mortality and morbidity after ischemic stroke. A functional role for the carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) in the regulation of reperfusion injury has not yet been demonstrated. OBJECTIVE We sought to identify and characterize the relevance of CEACAM1-expressing inflammatory cells in BBB breakdown and outcome after ischemic stroke in Ceacam1(-/-) and wild-type mice. METHODS AND RESULTS Focal ischemia was induced by temporary occlusion of the middle cerebral artery with a microfilament. Using MRI and Evans blue permeability assays, we observed increased stroke volumes, BBB breakdown and edema formation, reduction of cerebral perfusion, and brain atrophy in Ceacam1(-/-) mice. This translated into poor performance in neurological scoring and high poststroke-associated mortality. Elevated neutrophil influx, hyperproduction, and release of neutrophil-related matrix metalloproteinase-9 in Ceacam1(-/-) mice were confirmed by immune fluorescence, flow cytometry, zymography, and stimulation of neutrophils. Importantly, neutralization of matrix metalloproteinase-9 activity in Ceacam1(-/-) mice was sufficient to alleviate stroke sizes and improve survival to the level of CEACAM1-competent animals. Immune histochemistry of murine and human poststroke autoptic brains congruently identified abundance of CEACAM1(+)matrix metalloproteinase-9(+) neutrophils in the ischemic hemispheres. CONCLUSIONS CEACAM1 controls matrix metalloproteinase-9 secretion by neutrophils in postischemic inflammation at the BBB after stroke. We propose CEACAM1 as an important inhibitory regulator of neutrophil-mediated tissue damage and BBB breakdown in focal cerebral ischemia.
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Affiliation(s)
- Peter Ludewig
- From the Institute of Clinical Chemistry, Department of Neurology, Department of Neuropathology, and Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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López-Aguilera F, Plateo-Pignatari M, Biaggio V, Ayala C, Seltzer A. Hypoxic preconditioning induces an AT2-R/VEGFR-2(Flk-1) interaction in the neonatal brain microvasculature for neuroprotection. Neuroscience 2012; 216:1-9. [DOI: 10.1016/j.neuroscience.2012.04.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 04/13/2012] [Accepted: 04/27/2012] [Indexed: 10/28/2022]
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Cheviron ZA, Brumfield RT. Genomic insights into adaptation to high-altitude environments. Heredity (Edinb) 2012; 108:354-61. [PMID: 21934702 PMCID: PMC3313048 DOI: 10.1038/hdy.2011.85] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Revised: 06/03/2011] [Accepted: 06/14/2011] [Indexed: 12/25/2022] Open
Abstract
Elucidating the molecular genetic basis of adaptive traits is a central goal of evolutionary genetics. The cold, hypoxic conditions of high-altitude habitats impose severe metabolic demands on endothermic vertebrates, and understanding how high-altitude endotherms cope with the combined effects of hypoxia and cold can provide important insights into the process of adaptive evolution. The physiological responses to high-altitude stress have been the subject of over a century of research, and recent advances in genomic technologies have opened up exciting opportunities to explore the molecular genetic basis of adaptive physiological traits. Here, we review recent literature on the use of genomic approaches to study adaptation to high-altitude hypoxia in terrestrial vertebrates, and explore opportunities provided by newly developed technologies to address unanswered questions in high-altitude adaptation at a genomic scale.
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Affiliation(s)
- Z A Cheviron
- School of Biological Sciences, University of Nebraska, Lincoln, NE 68588, USA.
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Goswami SK, Das DK. Oxygen Sensing, Cardiac Ischemia, HIF-1α and Some Emerging Concepts. Curr Cardiol Rev 2011; 6:265-73. [PMID: 22043202 PMCID: PMC3083807 DOI: 10.2174/157340310793566136] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 09/03/2010] [Accepted: 09/15/2010] [Indexed: 11/22/2022] Open
Abstract
Oxygen plays a critical role in the perpetuation and propagation of almost all forms of life. The primary site of cellular oxygen consumption is the mitochondrial electron transport chain and in addition, oxygen is also used as a substrate for various enzymes involved in cellular homeostasis. Although our knowledge of the biochemistry and physiology of oxygen transport is century old, recent development of sophisticated tools of biophysical chemistry revealed that tissue oxygenation and oxygen sensing is a highly evolved process, especially in mammals. Perturbation of normal oxygen supply is associated with diseases like tumorigenesis, myocardial infarction and stroke. Available information suggests that when tissue oxygen supply is limited, mitochondria emanate signals involving reactive oxygen species generation which in turn stabilizes oxygen sensing transcription factor HIF-1. Upon stabilization, HIF-1 elicits necessary genetic response to cope with the diminished oxygen level. In view of such critical role of HIF-1 in cellular oxygen sensing, recently there has been a heightened interest in understanding the biology of HIF-1 in the context of cardiovascular system. The following review describes some of the recent advances in this regard.
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Affiliation(s)
- Shyamal K Goswami
- Cardiovascular Research Center, University of Connecticut School of Medicine, Farmington, Connecticut, CT 06030- 1110, USA
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Expression profiling of the ovarian surface kinome reveals candidate genes for early neoplastic changes. Transl Oncol 2011; 2:341-9. [PMID: 19956396 DOI: 10.1593/tlo.09199] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 08/24/2009] [Accepted: 08/28/2009] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES We tested the hypothesis that co-coordinated up-regulation or down-regulation of several ovarian cell surface kinases may provide clues for better understanding of the disease and help in rational design of therapeutic targets. STUDY DESIGN We compared the expression signature of 69 surface kinases in normal ovarian surface epithelial cells (OSE), with OSE from patients at high risk and with ovarian cancer. RESULTS Seven surface kinases, ALK, EPHA5, EPHB1, ERBB4, INSRR, PTK, and TGFbetaR1 displayed a distinctive linear trend in expression from normal, highrisk, and malignant epithelium. We confirmed these results using semiquantitative reverse transcription-polymerase chain reaction and tissue array of 202 ovarian cancer samples. A strong correlate was shown between disease-free survival and the expression of ERBB4. DNA sequencing revealed two novel mutations in ERBB4 in two cancer samples. CONCLUSIONS A distinct subset of the ovarian surface kinome is altered in the transition from high risk to invasive cancer and genetic mutation is not a dominant mechanism for these modifications. These results have significant implications for early detection and targeted therapeutic approaches for women at high risk of developing ovarian cancer.
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Zhu L, Wang Q, Zhang L, Fang Z, Zhao F, Lv Z, Gu Z, Zhang J, Wang J, Zen K, Xiang Y, Wang D, Zhang CY. Hypoxia induces PGC-1α expression and mitochondrial biogenesis in the myocardium of TOF patients. Cell Res 2010; 20:676-87. [PMID: 20368732 DOI: 10.1038/cr.2010.46] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
PGC-1alpha, a potent transcriptional coactivator, is the major regulator of mitochondrial biogenesis and activity in the cardiac muscle. The dysregulation of PGC-1alpha and its target genes has been reported to be associated with congenital and acquired heart diseases. By examining myocardium samples from patients with Tetralogy of Fallot, we show here that PGC-1alpha expression levels are markedly increased in patients compared with healthy controls and positively correlated with the severity of cyanosis. Furthermore, hypoxia significantly induced the expression of PGC-1alpha and mitochondrial biogenesis in cultured cardiac myocytes. Mechanistic studies suggest that hypoxia-induced PGC-1alpha expression is regulated through the AMPK signaling pathway. Together, our data indicate that hypoxia can stimulate the expression of PGC-1alpha and mitochondrial biogenesis in the cardiac myocytes, and this process might provide a potential adaptive mechanism for cardiac myocytes to increase ATP output and minimize hypoxic damage to the heart.
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Affiliation(s)
- Lingyun Zhu
- Jiangsu Diabetes Center, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
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Abstract
AbstractLocal inflammation during cutaneous leishmaniasis is accompanied by accumulation of CD11b+ cells at the site of the infection. A functional role for these monocytic cells in local angiogenesis in leishmaniasis has not been described so far. Here, we show that CD11b+ cells express high levels of the myeloid differentiation antigen carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1). In experimental cutaneous leishmaniasis in C57BL/6 wild-type (B6.WT) and B6.Ceacam1−/− mice, we found that only B6.Ceacam1−/− mice develop edemas and exhibit impairment of both hemangiogenesis and lymphangiogenesis. Because CEACAM1 expression correlates with functional angiogenesis, we further analyzed the role of the CD11b+ population. In B6.Ceacam1−/− mice, we found systemic reduction of Ly-6Chigh/CD11bhigh monocyte precursors. To investigate whether CEACAM1+ myeloid cells are causally related to efficient angiogenesis, we used reverse bone marrow transplants (BMTs) to restore CEACAM1+ or CEACAM1− bone marrow in B6.Ceacam1−/− or B6.WT recipients, respectively. We found that angiogenesis was restored by CEACAM1+ BMT only. In addition, we observed reduced morphogenic potential of inflammatory cells in Matrigel implants in CEACAM1− backgrounds or after systemic depletion of CD11bhigh macrophages. Taken together, we show for the first time that CEACAM1+ myeloid cells are crucial for angiogenesis in inflammation.
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Hypoxia-inducible factor-1alpha induces the coronary collaterals for coronary artery disease. Coron Artery Dis 2008; 19:173-9. [PMID: 18418234 DOI: 10.1097/mca.0b013e3282fa4b2c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Marked variability exists in coronary artery collaterals in patients with ischemic heart disease. Multiple factors are thought to play a role in collateral development; however, the contribution of hypoxia inducible factor-1alpha (HIF-1alpha), which is a transcriptional activator that functions as a master regulator of oxygen homeostasis, is not completely clear. It could play an important role in modulating collateral development. OBJECTIVE The objective of this study is to investigate the changes and significance of expression of HIF-1alpha in patients with coronary artery collaterals. METHODS Collateral vessels were determined in 98 patients with >or=70% narrowing of at least one coronary artery without earlier revascularization, 42 patients with coronary artery collaterals and 56 patients with no coronary artery collaterals. Extent of collaterals was expressed as scores according to the Rentrop scoring system. Another 50 cases with normal coronary arteries were selected as control. The levels of HIF-1alpha protein expression in monocyte and lymphocyte in the participants were tested by immunohistochemistry (IHC) and western blot; mRNA levels were measured using reverse transcriptase PCR technique. RESULTS Compared with the control with normal coronary artery, the patients had higher expression of HIF-1alpha protein tested by IHC and western blot (52.6+/-10.2 vs. 13.7+/-6.2 by IHC, 50.8+/-4.5 vs. 6.5+/-1.8 by western blot); furthermore, significantly higher HIF-1alpha expression was observed in patients with collaterals compared with patients with no collaterals (81.5+/-11.8 vs. 20.7+/-9.4 by IHC; 87.2+/-6.5 vs. 9.5+/-1.4 by western blot). On the transcriptional levels of HIF-1alpha, the result was the same as the protein, there was significant difference of HIF-1alpha between the three groups. The patients with collaterals were the highest (127.3+/-23.9), followed by patients with no collaterals (35.7+/-12.3), and the control were the lowest (23.5+/-9.3). A highly positive correlation was observed between the expression/transcription of HIF-1alpha and collateral score (P<0.01, IHC: r1=0.78, reverse transcriptase PCR: r2=0.69, western blot: r3=0.84). CONCLUSION These data suggest that higher inductions of HIF-1alpha are associated with coronary collaterals, thus implying that HIF-1alpha may promote coronary collateral formation. Detection of HIF-1alpha expression might be helpful to predict prognosis of patients with coronary artery disease.
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Role of hypoxia-inducible factor in cell survival during myocardial ischemia-reperfusion. Cell Death Differ 2008; 15:686-90. [PMID: 18259200 DOI: 10.1038/cdd.2008.13] [Citation(s) in RCA: 180] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Hypoxia-inducible factor (HIF) is the principal transcription factor involved in the regulation of transcriptional responses to hypoxia. During hypoxia, HIF-alpha levels accumulate and trigger an increase in expression of genes involved in glycolysis, glucose metabolism, mitochondrial function, cell survival, apoptosis, and resistance to oxidative stress. In this regard, HIF activation plays an essential role in triggering cellular protection and metabolic alterations from the consequences of oxygen deprivation. This suggests that HIF activation should confer protection against ischemia-reperfusion (I/R) injury, although this protection might require HIF activation before the onset of lethal ischemia. Studies using enhanced expression of HIF-1alpha suggest that its upregulation may be a beneficial therapeutic modality in the treatment or prevention of ischemic injury. HIF-regulated gene expression may mediate the late phase of preconditioning, and constitutive HIF activity may influence the expression of genes that are required for the cell to be able to respond to acute preconditioning. This article reviews the current literature on the role of HIF in balancing protection and cell death in the face of ischemia and I/R injury.
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Crisostomo PR, Wang M, Markel TA, Lahm T, Abarbanell AM, Herrmann JL, Meldrum DR. STEM CELL MECHANISMS AND PARACRINE EFFECTS. Shock 2007; 28:375-83. [PMID: 17577135 DOI: 10.1097/shk.0b013e318058a817] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Heart disease remains the leading cause of death in the industrialized world. Stem cell therapy is a promising treatment modality for injured cardiac tissue. A novel mechanism for this cardioprotection may include paracrine actions. Cardiac surgery represents the unique situation where preischemia and postischemia treatment modalities exist that may use stem cell paracrine protection. This review (1) recalls the history of stem cells in cardiac disease and the unraveling of its mechanistic basis for protection, (2) outlines the pathways for stem cell-mediated paracrine protection, (3) highlights the signaling factors expressed, (4) explores the potential of using stem cells clinically in cardiac surgery, and (5) summarizes all human stem cell studies in cardiac disease to date.
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Affiliation(s)
- Paul R Crisostomo
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana, USA.
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Increased vessel diameter of leptomeningeal anastomoses after hypoxic preconditioning. Brain Res 2006; 1115:209-12. [DOI: 10.1016/j.brainres.2006.07.081] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2006] [Revised: 07/19/2006] [Accepted: 07/20/2006] [Indexed: 11/30/2022]
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Carroll PA, Kenerson HL, Yeung RS, Lagunoff M. Latent Kaposi's sarcoma-associated herpesvirus infection of endothelial cells activates hypoxia-induced factors. J Virol 2006; 80:10802-12. [PMID: 16956952 PMCID: PMC1641760 DOI: 10.1128/jvi.00673-06] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Kaposi's sarcoma-associated herpesvirus (KSHV or HHV-8) is the etiological agent of Kaposi's sarcoma, a highly vascularized, endothelial-derived tumor. A direct role for KSHV-mediated induction of angiogenesis has been proposed based upon the nature of the neoplasia and various KSHV gene overexpression and infection model systems. We have found that KSHV infection of endothelial cells induces mRNA of hypoxia-induced factor 1alpha (HIF1alpha) and HIF2alpha, two homologous alpha subunits of the heterodimeric transcription factor HIF. HIF is a master regulator of both developmental and pathological angiogenesis, composed of an oxygen-sensitive alpha subunit and a constitutively expressed beta subunit. HIF is classically activated posttranscriptionally with hypoxia, leading to increased protein stability of HIF1alpha and/or HIF2alpha. However, we demonstrate that both alpha subunits are up-regulated at the transcript level by KSHV infection. The transcriptional activation of HIF leads to a functional increase in HIF activity under normoxic conditions, as demonstrated by both luciferase reporter assay and the increased expression of vascular endothelial growth factor receptor 1 (VEGFR1), an HIF-responsive gene. KSHV infection synergizes with hypoxia mimics and induces higher expression levels of HIF1alpha and HIF2alpha protein, and HIF1alpha is increased in a significant proportion of the latently infected endothelial cells. Src family kinases are required for the activation of HIF and the downstream gene VEGFR1 by KSHV. We also show that KS lesions, in vivo, express elevated levels of HIF1alpha and HIF2alpha proteins. Thus, KSHV stimulates the HIF pathway via transcriptional up-regulation of both HIF alphas, and this activation may play a role in KS formation, localization, and progression.
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MESH Headings
- Basic Helix-Loop-Helix Transcription Factors/genetics
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- Cells, Cultured
- Endothelial Cells/metabolism
- Endothelial Cells/virology
- Gene Expression
- Herpesviridae Infections/genetics
- Herpesviridae Infections/metabolism
- Herpesviridae Infections/virology
- Herpesvirus 8, Human/pathogenicity
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Sarcoma, Kaposi/genetics
- Sarcoma, Kaposi/metabolism
- Sarcoma, Kaposi/virology
- Transcription, Genetic
- Vascular Endothelial Growth Factor Receptor-1/genetics
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Affiliation(s)
- Patrick A Carroll
- Department of Microbiology, University of Washington, 1959 N.E. Pacific Street, Seattle, WA 98195, USA
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Reddy S, Osorio JC, Duque AM, Kaufman BD, Phillips AB, Chen JM, Quaegebeur J, Mosca RS, Mital S. Failure of right ventricular adaptation in children with tetralogy of Fallot. Circulation 2006; 114:I37-42. [PMID: 16820602 DOI: 10.1161/circulationaha.105.001248] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The left ventricle (LV) adapts to chronic hypoxia by expressing protective angiogenic, metabolic, and antioxidant genes to improve O2 delivery and energy production, and to minimize reoxygenation injury. The ability of the right ventricle (RV) to adapt to hypoxia in children with tetralogy of Fallot (TOF) is unknown. METHODS AND RESULTS Gene expression using real-time polymerase chain reaction was measured in RV myocardium obtained during surgical repair of TOF from 23 patients: 13 cyanotic and 10 acyanotic. Results were compared between the 2 groups and correlated with age at surgery, severity of cyanosis, and early postoperative course. The cyanotic patients were younger at surgery compared with acyanotic (5+/-3 versus 9+/-4 months; P=0.01), had higher hematocrit (43+/-4 versus 38+/-3 grams/dL; P=0.004), and lower O2 saturations (84+/-4% versus 98+/-2%; (P<0.001). Cyanotic patients had a significantly lower expression of vascular endothelial growth factor (VEGF), glycolytic enzymes, and glutathione peroxidase (GPX) (P<0.05), and a higher expression of collagen (P<0.01) compared with acyanotic patients. Gene expression correlated inversely with severity of cyanosis ie, preoperative hematocrit (P<0.01) and positively with preoperative saturation (P<0.05). The relationship between gene expression and cyanosis was independent of age at surgery. Ca2+ handling genes did not correlate with the severity of hypoxia. Lower angiogenic, glycolytic, and antioxidant gene expression correlated with increasing postoperative lactate (P<0.05). CONCLUSIONS The RV fails to up regulate adaptive pathways in response to increasing hypoxia in children with TOF. The implications of an early maladaptive response of the RV on long-term RV function require further investigation.
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Affiliation(s)
- Sushma Reddy
- Division of Pediatric Cardiology, Department of Pediatrics, Columbia University, New York, NY, USA
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Kuespert K, Pils S, Hauck CR. CEACAMs: their role in physiology and pathophysiology. Curr Opin Cell Biol 2006; 18:565-71. [PMID: 16919437 PMCID: PMC7127089 DOI: 10.1016/j.ceb.2006.08.008] [Citation(s) in RCA: 261] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2006] [Accepted: 08/03/2006] [Indexed: 12/24/2022]
Abstract
Carcinoembryonic antigen-related cell adhesion molecules (CEACAMs) belong to a group of mammalian immunoglobulin-related glycoproteins. They are involved in cell–cell recognition and modulate cellular processes that range from the shaping of tissue architecture and neovascularization to the regulation of insulin homeostasis and T-cell proliferation. CEACAMs have also been identified as receptors for host-specific viruses and bacteria in mice and humans, respectively, making these proteins an interesting example of pathogen–host co-evolution. Forward and reverse genetics in the mouse now provide powerful novel models to elucidate the action of CEACAM family members in vivo.
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Horst AK, Ito WD, Dabelstein J, Schumacher U, Sander H, Turbide C, Brümmer J, Meinertz T, Beauchemin N, Wagener C. Carcinoembryonic antigen-related cell adhesion molecule 1 modulates vascular remodeling in vitro and in vivo. J Clin Invest 2006; 116:1596-605. [PMID: 16680193 PMCID: PMC1448166 DOI: 10.1172/jci24340] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2004] [Accepted: 03/07/2006] [Indexed: 01/13/2023] Open
Abstract
Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1), a cellular adhesion molecule of the Ig superfamily, is associated with early stages of angiogenesis. In vitro, CEACAM1 regulates proliferation, migration, and differentiation of murine endothelial cells. To prove that CEACAM1 is functionally involved in the regulation of vascular remodeling in vivo, we analyzed 2 different genetic models: in Ceacam1-/- mice, the Ceacam1 gene was deleted systemically, and in CEACAM1(endo+) mice, CEACAM1 was overexpressed under the control of the endothelial cell-specific promoter of the Tie2 receptor tyrosine kinase. In Matrigel plug assays, Ceacam1-/- mice failed to establish new capillaries whereas in CEACAM1(endo+) mice the implants were vascularized extensively. After induction of hind limb ischemia by femoral artery ligation, Ceacam1-/- mice showed significantly reduced growth of arterioles and collateral blood flow compared with their WT littermates. In agreement with a causal role of CEACAM1 in vascular remodeling, CEACAM1(endo+) mice exhibited an increase in revascularization and collateral blood flow after arterial occlusion. Our findings indicate that CEACAM1 expression is important for the establishment of newly formed vessels in vivo. Hence CEACAM1 could be a future target for therapeutic manipulation of angiogenesis in disease.
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Affiliation(s)
- Andrea Kristina Horst
- Department of Clinical Chemistry, Center of Clinical Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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