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Guo Y, Qin J, Sun R, Hao P, Jiang Z, Wang Y, Gao Z, Zhang H, Xie K, Zhang W. Molecular hydrogen promotes retinal vascular regeneration and attenuates neovascularization and neuroglial dysfunction in oxygen-induced retinopathy mice. Biol Res 2024; 57:43. [PMID: 38915069 PMCID: PMC11194953 DOI: 10.1186/s40659-024-00515-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/13/2024] [Indexed: 06/26/2024] Open
Abstract
BACKGROUND Retinopathy of Prematurity (ROP) is a proliferative retinal vascular disease occurring in the retina of premature infants and is the main cause of childhood blindness. Nowadays anti-VEGF and retinal photocoagulation are mainstream treatments for ROP, but they develop a variety of complications. Hydrogen (H2) is widely considered as a useful neuroprotective and antioxidative therapeutic method for hypoxic-ischemic disease without toxic effects. However, whether H2 provides physiological angiogenesis promotion, neovascularization suppression and glial protection in the progression of ROP is largely unknown.This study aims to investigate the effects of H2 on retinal angiogenesis, neovascularization and neuroglial dysfunction in the retinas of oxygen-induced retinopathy (OIR) mice. METHODS In this study, mice that were seven days old and either wild-type (WT) or Nrf2-deficient (Nrf2-/-) were exposed to 75% oxygen for 5 days and then returned to normal air conditions. Different stages of hydrogen gas (H2) inhalation were administered. Vascular obliteration, neovascularization, and blood vessel leakage were analyzed and compared. To count the number of neovascularization endothelial nuclei, routine HE staining of retinal sections was conducted. Immunohistochemistry was performed using DyLight 594 labeled GSL I-isolectin B4 (IB4), as well as primary antibodies against proliferating cell nuclear antigen (PCNA), glial fibrillary acidic protein (GFAP), and Iba-1. Western blots were used to measure the expression of NF-E2-related factor 2 (Nrf2), vascular endothelial growth factor (VEGF), Notch1, Dll4, and HIF-1α. Additionally, the expression of target genes such as NQO1, HO-1, Notch1, Hey1, Hey2, and Dll4 was measured. Human umbilical vein endothelial cells (HUVECs) treated with H2 under hypoxia were used as an in vitro model. RT-PCR was used to evaluate the mRNA expression of Nrf2, Notch/Dll4, and the target genes. The expression of reactive oxygen species (ROS) was observed using immunofluorescence staining. RESULTS Our results indicate that 3-4% H2 does not disturb retinal physiological angiogenesis, but ameliorates vaso-obliteration and neovascularization in OIR mice. Moreover, H2 prevents the decreased density and reverses the morphologic and functional changes in retinal astrocytes caused by oxygen-induced injury. In addition, H2 inhalation reduces microglial activation, especially in the area of neovascularization in OIR mice. H2 plays a protective role in vascular regeneration by promoting Nrf2 activation and suppressing the Dll4-induced Notch signaling pathway in vivo. Also, H2 promotes the proliferation of HUVECs under hypoxia by negatively regulating the Dll4/Notch pathway and reducing ROS levels through Nrf2 pathway aligning with our findings in vivo.Moreover, the retinal oxygen-sensing mechanisms (HIF-1α/VEGF) are also involved in hydrogen-mediated retinal revascularization and neovascularization suppression. CONCLUSIONS Collectively, our results indicate that H2 could be a promising therapeutic agent for POR treatment and that its beneficial effect in human ROP might involve the activation of the Nrf2-Notch axis as well as HIF-1α/VEGF pathways.
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Affiliation(s)
- Yatu Guo
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin, China.
- Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China.
- Nankai University Affiliated Eye Hospital, Tianjin, China.
| | - Jiahui Qin
- Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
- Fenyang College of Shanxi Medical University, Shanxi, China
| | - Ruiqiang Sun
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin, China
- Nankai University Affiliated Eye Hospital, Tianjin, China
| | - Peng Hao
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin, China
- Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
| | - Zhixin Jiang
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin, China
- Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
| | - Yuchuan Wang
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin, China
- Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
| | - Zhiqi Gao
- Fenyang College of Shanxi Medical University, Shanxi, China
| | - Huan Zhang
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin, China
- Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
| | - Keliang Xie
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin Research Institute of Anesthesiology, Tianjin, China
- Department of Critical Care Medicine, General Hospital of Tianjin Medical University, Tianjin, China
| | - Wei Zhang
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin, China.
- Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China.
- Nankai University Affiliated Eye Hospital, Tianjin, China.
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Duan LJ, Jiang Y, Fong GH. Endothelial HIF2α suppresses retinal angiogenesis in neonatal mice by upregulating NOTCH signaling. Development 2024; 151:dev202802. [PMID: 38770916 PMCID: PMC11190433 DOI: 10.1242/dev.202802] [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] [Accepted: 05/01/2024] [Indexed: 05/22/2024]
Abstract
Prolyl hydroxylase domain (PHD) proteins are oxygen sensors that use intracellular oxygen as a substrate to hydroxylate hypoxia-inducible factor (HIF) α proteins, routing them for polyubiquitylation and proteasomal degradation. Typically, HIFα accumulation in hypoxic or PHD-deficient tissues leads to upregulated angiogenesis. Here, we report unexpected retinal phenotypes associated with endothelial cell (EC)-specific gene targeting of Phd2 (Egln1) and Hif2alpha (Epas1). EC-specific Phd2 disruption suppressed retinal angiogenesis, despite HIFα accumulation and VEGFA upregulation. Suppressed retinal angiogenesis was observed both in development and in the oxygen-induced retinopathy (OIR) model. On the other hand, EC-specific deletion of Hif1alpha (Hif1a), Hif2alpha, or both did not affect retinal vascular morphogenesis. Strikingly, retinal angiogenesis appeared normal in mice double-deficient for endothelial PHD2 and HIF2α. In PHD2-deficient retinal vasculature, delta-like 4 (DLL4, a NOTCH ligand) and HEY2 (a NOTCH target) were upregulated by HIF2α-dependent mechanisms. Inhibition of NOTCH signaling by a chemical inhibitor or DLL4 antibody partially rescued retinal angiogenesis. Taken together, our data demonstrate that HIF2α accumulation in retinal ECs inhibits rather than stimulates retinal angiogenesis, in part by upregulating DLL4 expression and NOTCH signaling.
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Affiliation(s)
- Li-Juan Duan
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Yida Jiang
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Guo-Hua Fong
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
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3
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Hu Y, Zhang F, Ikonomovic M, Yang T. The Role of NRF2 in Cerebrovascular Protection: Implications for Vascular Cognitive Impairment and Dementia (VCID). Int J Mol Sci 2024; 25:3833. [PMID: 38612642 PMCID: PMC11012233 DOI: 10.3390/ijms25073833] [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: 02/03/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Vascular cognitive impairment and dementia (VCID) represents a broad spectrum of cognitive decline secondary to cerebral vascular aging and injury. It is the second most common type of dementia, and the prevalence continues to increase. Nuclear factor erythroid 2-related factor 2 (NRF2) is enriched in the cerebral vasculature and has diverse roles in metabolic balance, mitochondrial stabilization, redox balance, and anti-inflammation. In this review, we first briefly introduce cerebrovascular aging in VCID and the NRF2 pathway. We then extensively discuss the effects of NRF2 activation in cerebrovascular components such as endothelial cells, vascular smooth muscle cells, pericytes, and perivascular macrophages. Finally, we summarize the clinical potential of NRF2 activators in VCID.
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Affiliation(s)
- Yizhou Hu
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15216, USA; (Y.H.); (F.Z.); (M.I.)
- Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh, Pittsburgh, PA 15216, USA
- Department of Internal Medicine, University of Pittsburgh Medical Center (UPMC) McKeesport, McKeesport, PA 15132, USA
| | - Feng Zhang
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15216, USA; (Y.H.); (F.Z.); (M.I.)
- Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh, Pittsburgh, PA 15216, USA
| | - Milos Ikonomovic
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15216, USA; (Y.H.); (F.Z.); (M.I.)
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15216, USA
- Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA
| | - Tuo Yang
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15216, USA; (Y.H.); (F.Z.); (M.I.)
- Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh, Pittsburgh, PA 15216, USA
- Department of Internal Medicine, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA 15216, USA
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4
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Bae T, Hallis SP, Kwak MK. Hypoxia, oxidative stress, and the interplay of HIFs and NRF2 signaling in cancer. Exp Mol Med 2024; 56:501-514. [PMID: 38424190 PMCID: PMC10985007 DOI: 10.1038/s12276-024-01180-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 03/02/2024] Open
Abstract
Oxygen is crucial for life and acts as the final electron acceptor in mitochondrial energy production. Cells adapt to varying oxygen levels through intricate response systems. Hypoxia-inducible factors (HIFs), including HIF-1α and HIF-2α, orchestrate the cellular hypoxic response, activating genes to increase the oxygen supply and reduce expenditure. Under conditions of excess oxygen and resulting oxidative stress, nuclear factor erythroid 2-related factor 2 (NRF2) activates hundreds of genes for oxidant removal and adaptive cell survival. Hypoxia and oxidative stress are core hallmarks of solid tumors and activated HIFs and NRF2 play pivotal roles in tumor growth and progression. The complex interplay between hypoxia and oxidative stress within the tumor microenvironment adds another layer of intricacy to the HIF and NRF2 signaling systems. This review aimed to elucidate the dynamic changes and functions of the HIF and NRF2 signaling pathways in response to conditions of hypoxia and oxidative stress, emphasizing their implications within the tumor milieu. Additionally, this review explored the elaborate interplay between HIFs and NRF2, providing insights into the significance of these interactions for the development of novel cancer treatment strategies.
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Affiliation(s)
- Taegeun Bae
- Integrated Research Institute for Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, Gyeonggi‑do, 14662, Republic of Korea
| | - Steffanus Pranoto Hallis
- Department of Pharmacy, Graduate School of The Catholic University of Korea, Bucheon, Gyeonggi‑do, 14662, Republic of Korea
| | - Mi-Kyoung Kwak
- Integrated Research Institute for Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, Gyeonggi‑do, 14662, Republic of Korea.
- Department of Pharmacy, Graduate School of The Catholic University of Korea, Bucheon, Gyeonggi‑do, 14662, Republic of Korea.
- College of Pharmacy, The Catholic University of Korea, Bucheon, Gyeonggi‑do, 14662, Republic of Korea.
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Guo Y, Zhang S, Wang D, Heng BC, Deng X. Role of cell rearrangement and related signaling pathways in the dynamic process of tip cell selection. Cell Commun Signal 2024; 22:24. [PMID: 38195565 PMCID: PMC10777628 DOI: 10.1186/s12964-023-01364-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/25/2023] [Indexed: 01/11/2024] Open
Abstract
Angiogenesis is a complex, highly-coordinated and multi-step process of new blood vessel formation from pre-existing blood vessels. When initiated, the sprouting process is spearheaded by the specialized endothelial cells (ECs) known as tip cells, which guide the organization of accompanying stalk cells and determine the function and morphology of the finally-formed blood vessels. Recent studies indicate that the orchestration and coordination of angiogenesis involve dynamic tip cell selection, which is the competitive selection of cells to lead the angiogenic sprouts. Therefore, this review attempt to summarize the underlying mechanisms involved in tip cell specification in a dynamic manner to enable readers to gain a systemic and overall understanding of tip cell formation, involving cooperative interaction of cell rearrangement with Notch and YAP/TAZ signaling. Various mechanical and chemical signaling cues are integrated to ensure the right number of cells at the right place during angiogenesis, thereby precisely orchestrating morphogenic functions that ensure correct patterning of blood vessels. Video Abstract.
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Affiliation(s)
- Yaru Guo
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| | - Shihan Zhang
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| | - Dandan Wang
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Boon Chin Heng
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
- NMPA Key Laboratory for Dental Materials, Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
| | - Xuliang Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China.
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China.
- Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
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6
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Tzani A, Haemmig S, Cheng HS, Perez-Cremades D, Augusto Heuschkel M, Jamaiyar A, Singh S, Aikawa M, Yu P, Wang T, Ye S, Feinberg MW, Plutzky J. FAM222A, Part of the BET-Regulated Basal Endothelial Transcriptome, Is a Novel Determinant of Endothelial Biology and Angiogenesis-Brief Report. Arterioscler Thromb Vasc Biol 2024; 44:143-155. [PMID: 37942611 PMCID: PMC10840377 DOI: 10.1161/atvbaha.123.319909] [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: 07/22/2023] [Accepted: 10/17/2023] [Indexed: 11/10/2023]
Abstract
BACKGROUND BETs (bromodomain and extraterminal domain-containing epigenetic reader proteins), including BRD4 (bromodomain-containing protein 4), orchestrate transcriptional programs induced by pathogenic stimuli, as intensively studied in cardiovascular disease and elsewhere. In endothelial cells (ECs), BRD4 directs induced proinflammatory, proatherosclerotic transcriptional responses; BET inhibitors, like JQ1, repress these effects and decrease atherosclerosis. While BET effects in pathogenic conditions have prompted therapeutic BET inhibitor development, BET action under basal conditions, including ECs, has remained understudied. To understand BET action in basal endothelial transcriptional programs, we first analyzed EC RNA-Seq data in the absence versus presence of JQ1 before using BET regulation to identify novel determinants of EC biology and function. METHODS RNA-Seq datasets of human umbilical vein ECs without and with JQ1 treatment were analyzed. After identifying C12orf34, also known as FAM222A (family with sequence similarity 222 member A), as a previously unreported, basally expressed, potently JQ1-induced EC gene, FAM222A was studied in endothelial and angiogenic responses in vitro using small-interference RNA silencing and lentiviral overexpression, in vitro, ex vivo and in vivo, including aortic sprouting, matrigel plug assays, and murine neonatal oxygen-induced retinopathy. RESULTS Resting EC RNA-Seq data indicate BETs direct transcriptional programs underlying core endothelial properties including migration, proliferation, and angiogenesis. BET inhibition in resting ECs also significantly induced a subset of mRNAs, including FAM222A-a unique BRD4-regulated gene with no reported EC role. Silencing endothelial FAM222A significantly decreased cellular proliferation, migration, network formation, aorta sprouting, and Matrigel plug vascularization through coordinated modulation of VEGF (vascular endothelial growth factor) and NOTCH mediator expression in vitro, ex vivo, in vivo; lentiviral FAM222A overexpression had opposite effects. In vivo, siFAM222A significantly repressed retinal revascularization in neonatal murine oxygen-induced retinopathy through similar angiogenic signaling modulation. CONCLUSIONS BET control over the basal endothelial transcriptome includes FAM222A, a novel, BRD4-regulated, key determinant of endothelial biology and angiogenesis.
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Affiliation(s)
- Aspasia Tzani
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Stefan Haemmig
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Henry S. Cheng
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Daniel Perez-Cremades
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Marina Augusto Heuschkel
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Anurag Jamaiyar
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Sasha Singh
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Masanori Aikawa
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Paul Yu
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Tianxi Wang
- Department of Ophthalmology, Boston Children’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Sun Ye
- Department of Ophthalmology, Boston Children’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Mark W. Feinberg
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
| | - Jorge Plutzky
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA 02115
- Harvard Medical School, Boston, MA 02115
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7
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Wei Z, Lei M, Wang Y, Xie Y, Xie X, Lan D, Jia Y, Liu J, Ma Y, Cheng B, Gerecht S, Xu F. Hydrogels with tunable mechanical plasticity regulate endothelial cell outgrowth in vasculogenesis and angiogenesis. Nat Commun 2023; 14:8307. [PMID: 38097553 PMCID: PMC10721650 DOI: 10.1038/s41467-023-43768-0] [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: 05/16/2023] [Accepted: 11/17/2023] [Indexed: 12/17/2023] Open
Abstract
The endothelial cell (EC) outgrowth in both vasculogenesis and angiogenesis starts with remodeling surrounding matrix and proceeds with the crosstalk between cells for the multicellular vasculature formation. The mechanical plasticity of matrix, defined as the ability to permanently deform by external traction, is pivotal in modulating cell behaviors. Nevertheless, the implications of matrix plasticity on cell-to-cell interactions during EC outgrowth, along with the molecular pathways involved, remain elusive. Here we develop a collagen-hyaluronic acid based hydrogel platform with tunable plasticity by using compositing strategy of dynamic and covalent networks. We show that although the increasing plasticity of the hydrogel facilitates the matrix remodeling by ECs, the largest tubular lumens and the longest invading distance unexpectedly appear in hydrogels with medium plasticity instead of the highest ones. We unravel that the high plasticity of the hydrogels promotes stable integrin cluster of ECs and recruitment of focal adhesion kinase with an overenhanced contractility which downregulates the vascular endothelial cadherin expression and destabilizes the adherens junctions between individual ECs. Our results, further validated with mathematical simulations and in vivo angiogenic tests, demonstrate that a balance of matrix plasticity facilitates both cell-matrix binding and cell-to-cell adherens, for promoting vascular assembly and invasion.
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Affiliation(s)
- Zhao Wei
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Meng Lei
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Yaohui Wang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Yizhou Xie
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Xueyong Xie
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Dongwei Lan
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Yuanbo Jia
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Jingyi Liu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Yufei Ma
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Bo Cheng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Sharon Gerecht
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA.
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China.
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, 710049, P.R. China.
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8
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Wen W, Yang L, Wang X, Zhang H, Wu F, Xu K, Chen S, Liao Z. Fucoidan promotes angiogenesis and accelerates wound healing through AKT/Nrf2/HIF-1α signalling pathway. Int Wound J 2023; 20:3606-3618. [PMID: 37203309 PMCID: PMC10588368 DOI: 10.1111/iwj.14239] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/20/2023] Open
Abstract
After skin injury, wound repair involves a complex process in which angiogenesis plays a crucial role. Previous research has indicated that fucoidan may aid in wound healing; we therefore hypothesised that fucoidan may speed up the process by promoting angiogenesis. In this study, we investigated the potential molecular mechanism underlying fucoidan's ability to accelerate wound healing by promoting angiogenesis. Using a full-cut wound model, we observed that fucoidan significantly intensified wound closure and promoted granulation formation and collagen deposition. Immunofluorescence staining revealed that fucoidan also promoted wound angiogenesis, specifically by accelerating the migration of new blood vessels to the middle area of the wound. Furthermore, fucoidan demonstrated the ability to enhance the proliferation of human umbilical vein endothelial cells (HUVECs) damaged by hydrogen peroxide (H2 O2 ) and to improve the formation of endothelial tubes. Mechanistic studies revealed that fucoidan upregulated the protein levels of the AKT/Nrf2/HIF-1α signalling pathway, which plays a crucial role in angiogenesis. This was further confirmed using the inhibitor LY294002, which reversed the promotion of endothelial tube formation by fucoidan. Overall, our findings suggest that fucoidan can promote angiogenesis via the AKT/Nrf2/HIF-1α signalling pathway and accelerate wound healing.
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Affiliation(s)
- Wenting Wen
- College of Life and Environmental SciencesWenzhou UniversityZhejiangChina
| | - Liangliang Yang
- School of Pharmaceutical Sciences, Wenzhou Wound Repair and Regeneration Key Laboratory, Cixi Biomedical Research InstituteWenzhou Medical UniversityZhejiangChina
| | - Xin Wang
- Dpartment of Plastic and Reconstructive Surgery, Hand and MicrosurgeryNingbo NO.6 HospitalZhejiangChina
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Wenzhou Wound Repair and Regeneration Key Laboratory, Cixi Biomedical Research InstituteWenzhou Medical UniversityZhejiangChina
| | - Fangfang Wu
- Department of Emergency, The Second Affiliated Hospital and Yuying Children's HospitalWenzhou Medical UniversityWenzhouChina
| | - Ke Xu
- College of Life and Environmental SciencesWenzhou UniversityZhejiangChina
| | - Shaodong Chen
- Department of OrthopaedicsLishui People's HospitalZhejiangChina
| | - Zhiyong Liao
- College of Life and Environmental SciencesWenzhou UniversityZhejiangChina
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9
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Mukherjee AG, Gopalakrishnan AV. The mechanistic insights of the antioxidant Keap1-Nrf2 pathway in oncogenesis: a deadly scenario. Med Oncol 2023; 40:248. [PMID: 37480500 DOI: 10.1007/s12032-023-02124-4] [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: 06/02/2023] [Accepted: 07/06/2023] [Indexed: 07/24/2023]
Abstract
The Nuclear factor erythroid 2-related factor 2 (Nrf2) protein has garnered significant interest due to its crucial function in safeguarding cells and tissues. The Nrf2 protein is crucial in preserving tissue integrity by safeguarding cells against metabolic, xenobiotic and oxidative stress. Due to its various functions, Nrf2 is a potential pharmacological target for reducing the incidence of diseases such as cancer. However, mutations in Keap1-Nrf2 are not consistently favored in all types of cancer. Instead, they seem to interact with specific driver mutations of tumors and their respective tissue origins. The Kelch-like ECH-associated protein 1 (Keap1)-Nrf2 pathway mutations are a powerful cancer adaptation that utilizes inherent cytoprotective pathways, encompassing nutrient metabolism and ROS regulation. The augmentation of Nrf2 activity elicits significant alterations in the characteristics of neoplastic cells, such as resistance to radiotherapy and chemotherapy, safeguarding against apoptosis, heightened invasiveness, hindered senescence, impaired autophagy and increased angiogenesis. The altered activity of Nrf2 can arise from diverse genetic and epigenetic modifications that instantly impact Nrf2 regulation. The present study aims to showcase the correlation between the Keap1-Nrf2 pathway and the progression of cancers, emphasizing genetic mutations, metabolic processes, immune regulation, and potential therapeutic strategies. This article delves into the intricacies of Nrf2 pathway anomalies in cancer, the potential ramifications of uncontrolled Nrf2 activity, and therapeutic interventions to modulate the Keap1-Nrf2 pathway.
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Affiliation(s)
- Anirban Goutam Mukherjee
- Department of Biomedical Sciences, School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Abilash Valsala Gopalakrishnan
- Department of Biomedical Sciences, School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
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10
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Wang Y, Jin X, Li M, Gao J, Zhao X, Ma J, Shi C, He B, Hu L, Shi J, Liu G, Qu G, Zheng Y, Jiang G. PM 2.5 Increases Systemic Inflammatory Cells and Associated Disease Risks by Inducing NRF2-Dependent Myeloid-Biased Hematopoiesis in Adult Male Mice. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:7924-7937. [PMID: 37184982 DOI: 10.1021/acs.est.2c09024] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Although PM2.5 (fine particles with aerodynamic diameter <2.5 μm) exposure shows the potential to impact normal hematopoiesis, the detailed alterations in systemic hematopoiesis and the underlying mechanisms remain unclear. For hematopoiesis under steady-state or stress conditions, nuclear factor erythroid 2-related factor 2 (NRF2) is essential for regulating hematopoietic processes to maintain blood homeostasis. Herein, we characterized changes in the populations of hematopoietic stem progenitor cells and committed hematopoietic progenitors in the lungs and bone marrow (BM) of wild-type and Nrf2-/- C57BL/6J male mice. PM2.5-induced NRF2-dependent biased hematopoiesis toward myeloid lineage in the lungs and BM generates excessive numbers of various inflammatory immune cells, including neutrophils, monocytes, and platelets. The increased population of these immune cells in the lungs, BM, and peripheral blood has been associated with observed pulmonary fibrosis and high disease risks in an NRF2-dependent manner. Therefore, although NRF2 is a protective factor against stressors, upon PM2.5 exposure, NRF2 is involved in stress myelopoiesis and enhanced PM2.5 toxicity in pulmonary injury, even leading to systemic inflammation.
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Affiliation(s)
- Yuanyuan Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoting Jin
- School of Public Health, Qingdao University, Qingdao 266071, China
| | - Min Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Jie Gao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
| | - Xingchen Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Juan Ma
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunzhen Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Bin He
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ligang Hu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Jianbo Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Guoliang Liu
- Department of Pulmonary and Critical Care Medicine, National Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China
- Institute of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Guangbo Qu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Yuxin Zheng
- School of Public Health, Qingdao University, Qingdao 266071, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environmental, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
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11
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Vaglienti MV, Subirada PV, Joray MB, Bonacci G, Sánchez MC. Protective Effect of NO 2-OA on Oxidative Stress, Gliosis, and Pro-Angiogenic Response in Müller Glial Cells. Cells 2023; 12:cells12030494. [PMID: 36766836 PMCID: PMC9914399 DOI: 10.3390/cells12030494] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/03/2023] [Accepted: 01/05/2023] [Indexed: 02/05/2023] Open
Abstract
Inflammation and oxidative and nitrosative stress are involved in the pathogenesis of proliferative retinopathies (PR). In PR, a loss of balance between pro-angiogenic and anti-angiogenic factors favors the secretion of vascular endothelial growth factor (VEGF). This vascular change results in alterations in the blood-retinal barrier, with extravasation of plasma proteins such as α2-macroglobulin (α2M) and gliosis in Müller glial cells (MGCs, such as MIO-M1). It is well known that MGCs play important roles in healthy and sick retinas, including in PR. Nitro-fatty acids are electrophilic lipid mediators with anti-inflammatory and cytoprotective properties. Our aim was to investigate whether nitro-oleic acid (NO2-OA) is beneficial against oxidative stress, gliosis, and the pro-angiogenic response in MGCs. Pure synthetic NO2-OA increased HO-1 expression in a time- and concentration-dependent manner, which was abrogated by the Nrf2 inhibitor trigonelline. In response to phorbol 12-myristate 13-acetate (PMA) and lipopolysaccharide (LPS), NO2-OA prevented the ROS increase and reduced the gliosis induced by α2M. Finally, when hypoxic MGCs were incubated with NO2-OA, the increase in VEGF mRNA expression was not affected, but under hypoxia and inflammation (IL-1β), NO2-OA significantly reduced VEGF mRNA levels. Furthermore, NO2-OA inhibited endothelial cell (BAEC) tubulogenesis. Our results highlight NO2-OA's protective effect on oxidative damage, gliosis; and the exacerbated pro-angiogenic response in MGCs.
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Affiliation(s)
- María V. Vaglienti
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba 5000, Argentina
| | - Paula V. Subirada
- Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba 5000, Argentina
| | - Mariana B. Joray
- Facultad de Ciencias Químicas, Universidad Católica de Córdoba, Córdoba 5000, Argentina
- Instituto de Investigaciones en Recursos Naturales y Sustentabilidad José Sánchez Labrador J. S., Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba 5000, Argentina
| | - Gustavo Bonacci
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba 5000, Argentina
- Correspondence: (G.B.); (M.C.S.)
| | - María C. Sánchez
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5000, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba 5000, Argentina
- Correspondence: (G.B.); (M.C.S.)
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12
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Methods for CRISPR-Cas as Ribonucleoprotein Complex Delivery In Vivo. Mol Biotechnol 2023; 65:181-195. [PMID: 35322386 DOI: 10.1007/s12033-022-00479-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 03/14/2022] [Indexed: 01/18/2023]
Abstract
The efficient delivery of CRISPR-Cas components is still a key and unsolved problem. CRISPR-Cas delivery in the form of a Cas protein+sgRNA (ribonucleoprotein complex, RNP complex), has proven to be extremely effective, since it allows to increase on-target activity, while reducing nonspecific activity. The key point for in vivo genome editing is the direct delivery of artificial nucleases and donor DNA molecules into the somatic cells of an adult organism. At the same time, control of the dose of artificial nucleases is impossible, which affects the efficiency of genome editing in the affected cells. Poor delivery efficiency and low editing efficacy reduce the overall potency of the in vivo genome editing process. Here we review how this problem is currently being solved in scientific works and what types of in vivo delivery methods of Cas9/sgRNA RNPs have been developed.
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13
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SENP6-Mediated deSUMOylation of VEGFR2 Enhances Its Cell Membrane Transport in Angiogenesis. Int J Mol Sci 2023; 24:ijms24032544. [PMID: 36768878 PMCID: PMC9916989 DOI: 10.3390/ijms24032544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/10/2023] [Accepted: 01/17/2023] [Indexed: 01/31/2023] Open
Abstract
Angiogenesis is a significant pathogenic characteristic of diabetic microangiopathy. Advanced glycation end products (AGEs) are considerably elevated in diabetic tissues and can affect vascular endothelial cell shape and function. Regulation of the vascular endothelial growth factor (VEGF)-VEGF receptor 2 (VEGFR2) signaling pathway is a critical mechanism in the regulation of angiogenesis, and VEGFR2 activity can be modified by post-translational changes. However, little research has been conducted on the control of small ubiquitin-related modifier (SUMO)-mediated VEGFR2 alterations. The current study investigated this using human umbilical vein endothelial cells (HUVECs) in conjunction with immunoblotting and immunofluorescence. AGEs increased Nrf2 translocation to the nucleus and promoted VEGFR2 expression. They also increased the expression of sentrin/SUMO-specific protease 6 (SENP6), which de-SUMOylated VEGFR2, and immunofluorescence indicated a reduction in VEGFR2 accumulation in the Golgi and increased VEGFR2 transport from the Golgi to the cell membrane surface via the coatomer protein complex subunit beta 2. VEGFR2 on the cell membrane was linked to VEGF generated by pericytes, triggering the VEGF signaling cascade. In conclusion, this study demonstrates that SENP6 regulates VEGFR2 trafficking from the Golgi to the endothelial cell surface. The SENP6-VEGFR2 pathway plays a critical role in pathological angiogenesis.
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Wu W, Hendrix A, Nair S, Cui T. Nrf2-Mediated Dichotomy in the Vascular System: Mechanistic and Therapeutic Perspective. Cells 2022; 11:cells11193042. [PMID: 36231004 PMCID: PMC9563590 DOI: 10.3390/cells11193042] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 12/14/2022] Open
Abstract
Nuclear factor-erythroid 2-related factor 2 (Nrf2), a transcription factor, controls the expression of more than 1000 genes that can be clustered into different categories with distinct functions ranging from redox balance and metabolism to protein quality control in the cell. The biological consequence of Nrf2 activation can be either protective or detrimental in a context-dependent manner. In the cardiovascular system, most studies have focused on the protective properties of Nrf2, mainly as a key transcription factor of antioxidant defense. However, emerging evidence revealed an unexpected role of Nrf2 in mediating cardiovascular maladaptive remodeling and dysfunction in certain disease settings. Herein we review the role of Nrf2 in cardiovascular diseases with a focus on vascular disease. We discuss the negative effect of Nrf2 on the vasculature as well as the potential underlying mechanisms. We also discuss the clinical relevance of targeting Nrf2 pathways for the treatment of cardiovascular and other diseases.
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Affiliation(s)
- Weiwei Wu
- School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao 266071, China
| | - Andrew Hendrix
- Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia, SC 29209, USA
| | - Sharad Nair
- Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia, SC 29209, USA
- Columbia VA Health System, Wm. Jennings Bryan Dorn VA Medical Center, Columbia, SC 29209, USA
| | - Taixing Cui
- Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia, SC 29209, USA
- Columbia VA Health System, Wm. Jennings Bryan Dorn VA Medical Center, Columbia, SC 29209, USA
- Correspondence: ; Tel.: +1-803-216-3804
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15
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Guo Y, Mei F, Huang Y, Ma S, Wei Y, Zhang X, Xu M, He Y, Heng BC, Chen L, Deng X. Matrix stiffness modulates tip cell formation through the p-PXN-Rac1-YAP signaling axis. Bioact Mater 2021; 7:364-376. [PMID: 34466738 PMCID: PMC8379356 DOI: 10.1016/j.bioactmat.2021.05.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/05/2021] [Accepted: 05/19/2021] [Indexed: 01/01/2023] Open
Abstract
Endothelial tip cell outgrowth of blood-vessel sprouts marks the initiation of angiogenesis which is critical in physiological and pathophysiological procedures. However, how mechanical characteristics of extracellular matrix (ECM) modulates tip cell formation has been largely neglected. In this study, we found enhanced CD31 expression in the stiffening outer layer of hepatocellular carcinoma than in surrounding soft tissues. Stiffened matrix promoted sprouting from endothelial cell (EC) spheroids and upregulated expressions of tip cell-enriched genes in vitro. Moreover, tip cells showed increased cellular stiffness, more actin cytoskeleton organization and enhanced YAP nuclear transfer than stalk and phalanx ECs. We further uncovered that substrate stiffness regulates FAK and Paxillin phosphorylation in focal adhesion of ECs promoting Rac1 transition from inactive to active state. YAP is subsequently activated and translocated into nucleus, leading to increased tip cell specification. p-Paxillin can also loosen the intercellular connection which also facilitates tip cell specification. Collectively our present study shows that matrix stiffness modulates tip cell formation through p-PXN-Rac1-YAP signaling axis, shedding light on the role of mechanotransduction in tip cell formation. This is of special significance in biomaterial design and treatment of some pathological situations. Mechanotransduction is implicated in angiogenesis and tip cell formation. Tip cells showed different mechanical properties from stalk and phalanx ECs. Paxillin, Rac1 and YAP might be novel treatment targets for some diseases. Material stiffness affects tip cell specification.
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Affiliation(s)
- Yaru Guo
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Feng Mei
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Ying Huang
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Siqin Ma
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Yan Wei
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Xuehui Zhang
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, PR China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, 100081, PR China
- Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, PR China
| | - Mingming Xu
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Ying He
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Boon Chin Heng
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, 100081, PR China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
- Corresponding author. Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Xuliang Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, PR China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, 100081, PR China
- Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, PR China
- Corresponding author. Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
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Zeng A, Wang SR, He YX, Yan Y, Zhang Y. Progress in understanding of the stalk and tip cells formation involvement in angiogenesis mechanisms. Tissue Cell 2021; 73:101626. [PMID: 34479073 DOI: 10.1016/j.tice.2021.101626] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 12/28/2022]
Abstract
Vascular sprouting is a key process of angiogenesis and mainly related to the formation of stalk and tip cells. Many studies have found that angiogenesis has a great clinical significance in promoting the functional repair of impaired tissues and anti-angiogenesis is a key to treatment of many tumors. Therefore, how the pathways regulate angiogenesis by regulating the formation of stalk and tip cells is an urgent problem for researchers. This review mainly summarizes the research progress of pathways affecting the formation of stalk and tip cells during angiogenesis in recent years, including the main signaling pathways (such as VEGF-VEGFR-Dll4-Notch signaling pathway, ALK-Smad signaling pathway,CCN1-YAP/YAZ signaling pathway and other signaling pathways) and cellular actions (such as cellular metabolisms, intercellular tension and other actions), aiming to further give the readers an insight into the mechanism of regulating the formation of stalk and tip cells during angiogenesis and provide more targets for anti-angiogenic drugs.
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Affiliation(s)
- Ao Zeng
- Department of Ophthalmology, the Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China
| | - Shu-Rong Wang
- Department of Ophthalmology, the Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China
| | - Yu-Xi He
- Department of Ophthalmology, the Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China
| | - Yu Yan
- Department of Ophthalmology, the Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China
| | - Yan Zhang
- Department of Ophthalmology, the Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China.
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17
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Chen P, Zhang G, Jiang S, Ning Y, Deng B, Pan X, Liu S, He Y, Zhang L, Wan R, Wu Z, He Q, Yin J, Wang H, Li J. Mechanosensitive Piezo1 in endothelial cells promotes angiogenesis to support bone fracture repair. Cell Calcium 2021; 97:102431. [PMID: 34153657 DOI: 10.1016/j.ceca.2021.102431] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/22/2022]
Abstract
Piezo1, a calcium-permeable non-selective cationic channel that senses mechanical stimulation in multicellular organisms, mediates various biological processes, including angiogenesis. The supply of nutrients and oxygen through newly formed blood vessels at the fractured lesion is critical for bone fracture repair. The elucidation of the underlying mechanisms involved in angiogenesis and bone repair can aid in improving fracture healing. Here, mice with endothelial cell-specific deletion of Piezo1 channels were used to examine the role of Piezo1 in the initiation of fracture healing. The expression and distribution of Piezo1 was explored in the vasculature of the bone. The deletion of endothelial Piezo1 resulted in impaired bone fracture repair, downregulation of calcium-activated proteolytic calpain activity during vascularization, inhibition of osteoblast maturation and ossification, downregulation of phosphorylated PI3K-AKT, and impaired Notch signaling during bone fracture union. These findings indicated that Piezo1 protein is a potential target for enhancing bone regeneration and treating delayed or nonunion bone fractures.
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Affiliation(s)
- Peng Chen
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Gangyu Zhang
- The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Shan Jiang
- The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yile Ning
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Bo Deng
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xianmei Pan
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Silin Liu
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yu He
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Lei Zhang
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Rentao Wan
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Zhiming Wu
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Qi He
- Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; The First School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Jiang Yin
- The affiliated Cancer Hospital, Guangzhou Medical University, Guangzhou 510095, China
| | - Haibin Wang
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
| | - Jing Li
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, LS2 9JT, UK.
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18
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Wang J, Wang X, Gao Y, Lin Z, Chen J, Gigantelli J, Shapiro JI, Xie Z, Pierre SV. Stress Signal Regulation by Na/K-ATPase As a New Approach to Promote Physiological Revascularization in a Mouse Model of Ischemic Retinopathy. Invest Ophthalmol Vis Sci 2021; 61:9. [PMID: 33275652 PMCID: PMC7718810 DOI: 10.1167/iovs.61.14.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Purpose The identification of target pathways to block excessive angiogenesis while simultaneously restoring physiological vasculature is an unmet goal in the therapeutic management of ischemic retinopathies. pNaKtide, a cell-permeable peptide that we have designed by mapping the site of α1 Na/K-ATPase (NKA)/Src binding, blocks the formation of α1 NKA/Src/reactive oxygen species (ROS) amplification loops and restores physiological ROS signaling in a number of oxidative disease models. The aim of this study was to evaluate the importance of the NKA/Src/ROS amplification loop and the effect of pNaKtide in experimental ischemic retinopathy. Methods Human retinal microvascular endothelial cells (HRMECs) and retinal pigment epithelium (ARPE-19) cells were used to evaluate the effect of pNaKtide on viability, proliferation, and angiogenesis. Retinal toxicity and distribution were assessed in those cells and in the mouse. Subsequently, the role and molecular mechanism of NKA/Src in ROS stress signaling were evaluated biochemically in the retinas of mice exposed to the well-established protocol of oxygen-induced retinopathy (OIR). Finally, pNaKtide efficacy was assessed in this model. Results The results suggest a key role of α1 NKA in the regulation of ROS stress and the Nrf2 pathway in mouse OIR retinas. Inhibition of α1 NKA/Src by pNaKtide reduced pathologic ROS signaling and restored normal expression of hypoxia-inducible factor 1-α/vascular endothelial growth factor (VEGF). Unlike anti-VEGF agents, pNaKtide did promote retinal revascularization while inhibiting neovascularization and inflammation. Conclusions Targeting α1 NKA represents a novel strategy to develop therapeutics that not only inhibit neovascularization but also promote physiological revascularization in ischemic eye diseases.
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Affiliation(s)
- Jiayan Wang
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia, United States.,Departments of Medicine, Ophthalmology, Pharmacology, and Surgery, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, United States
| | - Xiaoliang Wang
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia, United States.,Departments of Medicine, Ophthalmology, Pharmacology, and Surgery, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, United States
| | - Yingnyu Gao
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia, United States
| | - Zhucheng Lin
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia, United States
| | - Jing Chen
- Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - James Gigantelli
- Departments of Medicine, Ophthalmology, Pharmacology, and Surgery, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, United States
| | - Joseph I Shapiro
- Departments of Medicine, Ophthalmology, Pharmacology, and Surgery, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, United States
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia, United States
| | - Sandrine V Pierre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia, United States
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19
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Linna-Kuosmanen S, Tomas Bosch V, Moreau PR, Bouvy-Liivrand M, Niskanen H, Kansanen E, Kivelä A, Hartikainen J, Hippeläinen M, Kokki H, Tavi P, Levonen AL, Kaikkonen MU. NRF2 is a key regulator of endothelial microRNA expression under proatherogenic stimuli. Cardiovasc Res 2021; 117:1339-1357. [PMID: 32683448 PMCID: PMC8064437 DOI: 10.1093/cvr/cvaa219] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 07/13/2020] [Indexed: 12/22/2022] Open
Abstract
AIMS Oxidized phospholipids and microRNAs (miRNAs) are increasingly recognized to play a role in endothelial dysfunction driving atherosclerosis. NRF2 transcription factor is one of the key mediators of the effects of oxidized phospholipids, but the gene regulatory mechanisms underlying the process remain obscure. Here, we investigated the genome-wide effects of oxidized phospholipids on transcriptional gene regulation in human umbilical vein endothelial cells and aortic endothelial cells with a special focus on miRNAs. METHODS AND RESULTS We integrated data from HiC, ChIP-seq, ATAC-seq, GRO-seq, miRNA-seq, and RNA-seq to provide deeper understanding of the transcriptional mechanisms driven by NRF2 in response to oxidized phospholipids. We demonstrate that presence of NRF2 motif and its binding is more prominent in the vicinity of up-regulated transcripts and transcriptional initiation represents the most likely mechanism of action. We further identified NRF2 as a novel regulator of over 100 endothelial pri-miRNAs. Among these, we characterize two hub miRNAs miR-21-5p and miR-100-5p and demonstrate their opposing roles on mTOR, VEGFA, HIF1A, and MYC expressions. Finally, we provide evidence that the levels of miR-21-5p and miR-100-5p in exosomes are increased upon senescence and exhibit a trend to correlate with the severity of coronary artery disease. CONCLUSION Altogether, our analysis provides an integrative view into the regulation of transcription and miRNA function that could mediate the proatherogenic effects of oxidized phospholipids in endothelial cells.
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Affiliation(s)
- Suvi Linna-Kuosmanen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Vanesa Tomas Bosch
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Pierre R Moreau
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | | | - Henri Niskanen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Emilia Kansanen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Annukka Kivelä
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Juha Hartikainen
- School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
- Heart Center, Kuopio University Hospital, 70211 Kuopio, Finland
| | | | - Hannu Kokki
- School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
- Anesthesia and Operative Services, Kuopio University Hospital, 70211 Kuopio, Finland
| | - Pasi Tavi
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Anna-Liisa Levonen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Minna U Kaikkonen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
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20
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Chen D, Gao ZQ, Wang YY, Wan BB, Liu G, Chen JL, Wu YX, Zhou Q, Jiang SY, Yu RQ, Pang QF. Sodium Propionate Enhances Nrf2-Mediated Protective Defense Against Oxidative Stress and Inflammation in Lipopolysaccharide-Induced Neonatal Mice. J Inflamm Res 2021; 14:803-816. [PMID: 33732006 PMCID: PMC7957230 DOI: 10.2147/jir.s303105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/23/2021] [Indexed: 12/27/2022] Open
Abstract
Background Alveolar arrest and the impaired angiogenesis caused by chronic inflammation and oxidative stress are two main factors in bronchopulmonary dysplasia (BPD). Short-chain fatty acids (SCFAs), especially propionate, possess anti-oxidant and anti-inflammatory effects. The present study was designed to examine the roles of sodium propionate (SP) on lipopolysaccharide (LPS)-challenged BPD and its potential mechanisms. Methods WT, Nrf2-/- mice and pulmonary microvascular endothelial cells (HPMECs) were used in this study. LPS was performed to mimic BPD model both in vivo and vitro. Lung histopathology, inflammation and oxidative stress-related mRNA expressions in lungs involved in BPD pathogenesis were investigated. In addition, cell viability and angiogenesis were also tested. Results The increased nuclear factor erythroid 2-related factor (Nrf2) and decreased Kelch-like ECH-associated protein-1 (Keap-1) expressions were observed after SP treatment in the LPS-induced neonatal mouse model of BPD. In LPS-induced wild-type but not Nrf2-/- neonatal mice, SP reduced pulmonary inflammation and oxidative stress and exhibited obvious pathological alterations of the alveoli. Moreover, in LPS-evoked HPMECs, SP accelerated Nrf2 nuclear translocation presented and exhibited cytoprotective and pro-angiogenesis effects. In addition, SP diminished the LPS-induced inflammatory response by blocking the activation of nuclear factor-kappa B pathway. Moreover, pretreatment with ML385, an Nrf2 specific inhibitor, offsets the beneficial effects of SP on inflammation, oxidative stress and angiogenesis in LPS-evoked HPMECs. Conclusion SP protects against LPS-induced lung alveolar simplification and abnormal angiogenesis in neonatal mice and HPMECs in an Nrf2-dependent manner.
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Affiliation(s)
- Dan Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Zhi-Qi Gao
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ying-Ying Wang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Bin-Bin Wan
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Gang Liu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Jun-Liang Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ya-Xian Wu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Qin Zhou
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Shan-Yu Jiang
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Ren-Qiang Yu
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Qing-Feng Pang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
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21
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Welch CL, Austin ED, Chung WK. Genes that drive the pathobiology of pediatric pulmonary arterial hypertension. Pediatr Pulmonol 2021; 56:614-620. [PMID: 31917901 PMCID: PMC7343584 DOI: 10.1002/ppul.24637] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/27/2019] [Indexed: 12/15/2022]
Abstract
Emerging data from studies of pediatric-onset pulmonary arterial hypertension (PAH) indicate that the genomics of pediatric PAH is different than that of adults. There is a greater genetic burden in children, with rare genetic factors contributing to at least 35% of pediatric-onset idiopathic PAH (IPAH) compared with ~11% of adult-onset IPAH. De novo variants are the most frequent genetic cause of PAH in children, likely contributing to ~15% of all cases. Rare deleterious variants in bone morphogenetic protein receptor 2 (BMPR2) contribute to pediatric-onset familial PAH and IPAH with similar frequency as adult-onset. While likely gene-disrupting (LGD) variants in BMPR2 contribute across the lifespan, damaging missense variants are more frequent in early-onset PAH. Rare deleterious variants in T-box 4-containing protein (TBX4) are more common in pediatric-compared with adult-onset PAH, explaining ~8% of pediatric IPAH. PAH associated with congenital heart disease (APAH-CHD) and other developmental disorders account for a large proportion of pediatric PAH. SRY-related HMG box transcription factor (SOX17) was recently identified as an APAH-CHD risk gene, contributing less frequently to IPAH, with a greater prevalence of rare deleterious variants in children compared with adults. The differences in genetic burden and genes underlying pediatric- vs adult-onset PAH indicate that genetic information relevant to pediatric PAH cannot be extrapolated from adult studies. Large cohorts of pediatric-onset PAH are necessary to identify the unique etiological differences of PAH in children, as well as the natural history and response to therapy.
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Affiliation(s)
- Carrie L Welch
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York
| | - Eric D Austin
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Wendy K Chung
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York.,Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York.,Department of Medicine, Columbia University Medical Center, New York, New York
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22
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Zhong X, Yu Y, Wang C, Zhu Q, Wu J, Ke W, Ji D, Niu C, Yang X, Wei Y. Hippocampal proteomic analysis reveals the disturbance of synaptogenesis and neurotransmission induced by developmental exposure to organophosphate flame retardant triphenyl phosphate. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124111. [PMID: 33189059 DOI: 10.1016/j.jhazmat.2020.124111] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/14/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
With the spread of organophosphorus flame retardants (OPFRs), the environmental and health risks they induce are attracting attention. Triphenyl phosphate (TPHP) is a popular alternative to brominated flame retardant and halogenated OPFRs. Neurodevelopmental toxicity is TPHP's primary adverse effect, whereas the biomarkers and the modes of action have yet to be elucidated. In the present study, 0.5, 5, and 50 mg/kg of TPHP were orally administered to mice from postnatal day 10 (P10) to P70. The behavioral tests showed a compromised learning and memory capability. Proteomic analysis of the hippocampus exposed to 0.5 or 50 mg/kg of TPHP identified 531 differentially expressed proteins that were mainly involved in axon guidance, synaptic function, neurotransmitter transport, exocytosis, and energy metabolism. Immunoblot and immunofluorescence analysis showed that exposure to TPHP reduced the protein levels of TUBB3 and SYP in the synapses of hippocampal neurons. TPHP exposure also downregulated the gene expression of neurotransmitter receptors including Grins, Htr1α, and Adra1α in a dose-dependent fashion. Moreover, the calcium-dependent synaptic exocytosis governed by synaptic vesicle proteins STX1A and SYT1 was inhibited in the TPHP-treated hippocampus. Our results reveal that TPHP exposure causes abnormal learning and memory behaviors by disturbing synaptogenesis and neurotransmission.
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Affiliation(s)
- Xiali Zhong
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yuejin Yu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Can Wang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Qicheng Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Jingwei Wu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Weijian Ke
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Di Ji
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Congying Niu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Xifei Yang
- Key Laboratory of Modern Toxicology of Shenzhen, Shenzhen Medical Key Subject of Health Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen 518172, China
| | - Yanhong Wei
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
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23
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Huang Y, Pan L, Wu T. Improvement of cerebral ischemia-reperfusion injury by L-3-n-butylphthalide through promoting angiogenesis. Exp Brain Res 2020; 239:341-350. [PMID: 33180154 DOI: 10.1007/s00221-020-05978-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 11/02/2020] [Indexed: 12/11/2022]
Abstract
Cerebral ischemia/reperfusion (I/R) injury may lead to a poor prognosis for ischemic stroke patients after reperfusion therapy, and currently, lacks effective therapeutic intervention. This study aimed to investigate the effects of L-3-n-butylphthalide (L-NBP) on cerebral I/R injury in rats. Rat models of cerebral I/R injury were established using the middle cerebral artery occlusion/refusion (MACO/R) surgery and were administrated intragastrically with L-NBP or vehicle. We found that L-NBP attenuated the histological damages and reduced the brain hematoma in MACO/R rats. L-NBP also significantly improved the neurological function, alleviated the brain edema, and reduced the permeability of blood-brain barrier of MACO/R rats. Moreover, we detected that L-NBP considerably facilitated microvessel formation in the lesion area of brain in MACO/R rats. Finally, we found that L-NBP significantly increased the protein and mRNA expression levels of Nrf2, HIF-1α, and VEGF in the brain of MACO/R rats. In conclusion, our results demonstrated that L-NBP exerted significant beneficial effects on cerebral I/R injury in rats through promoting angiogenesis, which may be associated with the activation of Nrf2/HIF-1α/VEGF signaling pathway. Our results suggested that L-NBP could be a potential therapeutic drug for cerebral I/R injury.
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Affiliation(s)
- Ying Huang
- Department of Pharmacy, The People's Hospital of Yichun City, Yichun, 336000, People's Republic of China
| | - Lishou Pan
- Department of Neurology, The People's Hospital of Yichun City, Yichun, 336000, People's Republic of China
| | - Ting Wu
- Department of Pharmacy, The People's Hospital of Yichun City, Yichun, 336000, People's Republic of China.
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24
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Welch CL, Chung WK. Genetics and Genomics of Pediatric Pulmonary Arterial Hypertension. Genes (Basel) 2020; 11:E1213. [PMID: 33081265 PMCID: PMC7603012 DOI: 10.3390/genes11101213] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/02/2020] [Accepted: 10/13/2020] [Indexed: 12/14/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a rare disease with high mortality despite recent therapeutic advances. The disease is caused by both genetic and environmental factors and likely gene-environment interactions. While PAH can manifest across the lifespan, pediatric-onset disease is particularly challenging because it is frequently associated with a more severe clinical course and comorbidities including lung/heart developmental anomalies. In light of these differences, it is perhaps not surprising that emerging data from genetic studies of pediatric-onset PAH indicate that the genetic basis is different than that of adults. There is a greater genetic burden in children, with rare genetic factors contributing to ~42% of pediatric-onset PAH compared to ~12.5% of adult-onset PAH. De novo variants are frequently associated with PAH in children and contribute to at least 15% of all pediatric cases. The standard of medical care for pediatric PAH patients is based on extrapolations from adult data. However, increased etiologic heterogeneity, poorer prognosis, and increased genetic burden for pediatric-onset PAH calls for a dedicated pediatric research agenda to improve molecular diagnosis and clinical management. A genomics-first approach will improve the understanding of pediatric PAH and how it is related to other rare pediatric genetic disorders.
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Affiliation(s)
- Carrie L Welch
- Department of Pediatrics, Irving Medical Center, Columbia University, 1150 St. Nicholas Avenue, New York, NY 10032, USA
| | - Wendy K Chung
- Department of Pediatrics, Irving Medical Center, Columbia University, 1150 St. Nicholas Avenue, New York, NY 10032, USA
- Department of Medicine, Irving Medical Center, Columbia University, 622 W 168th St, New York, NY 10032, USA
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25
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Feng J, Wang H, Jing Z, Wang Y, Cheng Y, Wang W, Sun W. Role of Magnesium in Type 2 Diabetes Mellitus. Biol Trace Elem Res 2020; 196:74-85. [PMID: 31713111 DOI: 10.1007/s12011-019-01922-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 09/26/2019] [Indexed: 12/11/2022]
Abstract
Magnesium (in its ionized and biologically active form, Mg2+) is an essential trace element that participates in numerous physiologic processes. Abnormal Mg2+ homeostasis can lead to many metabolic disorders, including diabetes mellitus (DM) and its complications. Mg2+ participates in energy generation and is required for DNA and RNA synthesis, reproduction, and protein synthesis. Additionally, Mg2+ acts as a calcium antagonist and protects vascular endothelial cells from oxidative stress. Imbalances in Mg2+ status, more frequently hypomagnesemia, inhibit glucose transporter type 4 translocation, increase insulin resistance, affect lipid metabolism, induce oxidative stress, and impair the antioxidant system of endothelial cells, In these ways, hypomagnesemia contributes to the initiation and progression of DM and its macrovascular and microvascular complications. In this review, we summarize recent advances in knowledge of the mechanisms whereby Mg2+ regulates insulin secretion and sensitivity. In addition, we discuss the future prospects for research regarding the mechanisms whereby Mg2+ status impacts DM and its complications.
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Affiliation(s)
- Jianan Feng
- Department of Nephrology, The First Hospital of Jilin University, 71 Xinmin Street, Jilin Province, Changchun, 130021, China
| | - Heyuan Wang
- Department of Endocrinology, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Zhe Jing
- Department of Nephrology, The First Hospital of Jilin University, 71 Xinmin Street, Jilin Province, Changchun, 130021, China
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Yue Wang
- Department of Nephrology, The First Hospital of Jilin University, 71 Xinmin Street, Jilin Province, Changchun, 130021, China
| | - Yanli Cheng
- Department of Nephrology, The First Hospital of Jilin University, 71 Xinmin Street, Jilin Province, Changchun, 130021, China
| | - Wanning Wang
- Department of Nephrology, The First Hospital of Jilin University, 71 Xinmin Street, Jilin Province, Changchun, 130021, China
| | - Weixia Sun
- Department of Nephrology, The First Hospital of Jilin University, 71 Xinmin Street, Jilin Province, Changchun, 130021, China.
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26
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Deng S, Li X, Liu S, Chen J, Li M, Chew SY, Leong KW, Cheng D. Codelivery of CRISPR-Cas9 and chlorin e6 for spatially controlled tumor-specific gene editing with synergistic drug effects. SCIENCE ADVANCES 2020; 6:eabb4005. [PMID: 32832641 PMCID: PMC7439618 DOI: 10.1126/sciadv.abb4005] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 06/01/2020] [Indexed: 05/15/2023]
Abstract
Controlled release of CRISPR-Cas9 ribonucleoprotein (RNP) and codelivery with other drugs remain a challenge. We demonstrate controlled release of CRISPR-Cas9 RNP and codelivery with antitumor photosensitizer chlorin e6 (Ce6) using near-infrared (NIR)- and reducing agent-responsive nanoparticles in a mouse tumor model. Nitrilotriacetic acid-decorated micelles can bind His-tagged Cas9 RNP. Lysosomal escape of nanoparticles was triggered by NIR-induced reactive oxygen species (ROS) generation by Ce6 in tumor cells. Cytoplasmic release of Cas9/single-guide RNA (sgRNA) was achieved by reduction of disulfide bond. Cas9/sgRNA targeted the antioxidant regulator Nrf2, enhancing tumor cell sensitivity to ROS. Without NIR irradiation, Cas9 was degraded in lysosomes and gene editing failed in normal tissues. The synergistic effects of Ce6 photodynamic therapy and Nrf2 gene editing were confirmed in vivo. Controlled release of CRISPR-Cas9 RNP and codelivery with Ce6 using stimuli-responsive nanoparticles represent a versatile strategy for gene editing with potentially synergistic drug effects.
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Affiliation(s)
- Shaohui Deng
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Xiaoxia Li
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Shuang Liu
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Jifeng Chen
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Mingqiang Li
- Laboratory of Biomaterials and Translational Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, P.R. China
| | - Sing Yian Chew
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Kam W. Leong
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Du Cheng
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, P.R. China
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27
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Guo Z, Mo Z. Keap1‐Nrf2 signaling pathway in angiogenesis and vascular diseases. J Tissue Eng Regen Med 2020; 14:869-883. [PMID: 32336035 DOI: 10.1002/term.3053] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 04/14/2020] [Accepted: 04/22/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Zi Guo
- Department of EndocrinologyThe Third Xiangya Hospital, Central South University Changsha China
| | - Zhaohui Mo
- Department of EndocrinologyThe Third Xiangya Hospital, Central South University Changsha China
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28
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Wang F, Li R, Tu P, Chen J, Zeng K, Jiang Y. Total Glycosides of Cistanche deserticola Promote Neurological Function Recovery by Inducing Neurovascular Regeneration via Nrf-2/Keap-1 Pathway in MCAO/R Rats. Front Pharmacol 2020; 11:236. [PMID: 32256351 PMCID: PMC7089931 DOI: 10.3389/fphar.2020.00236] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 02/20/2020] [Indexed: 12/21/2022] Open
Abstract
Background The traditional Chinese medicine Cistanche deserticola has been reported to be valid for cardiovascular and cerebrovascular diseases. However, its active components for the protection of ischemic stroke are not clear. We aimed to explore the active components of C. deserticola against ischemic stroke as well as its potential mechanisms. Methods We investigated the brain protective effects of extracts from C. deserticola, total glycosides (TGs), polysaccharides (PSs), and oligosaccharides (OSs) in a rat model of middle cerebral artery occlusion-reperfusion (MCAO/R). 2, 3, 5-Triphenyltetrazolium chloride (TTC) staining was used to assess the cerebral infarction volume, and Evans blue assay was adopted to assess the blood-brain barrier (BBB) permeability. Then, the expressions CD31, α-SMA, PDGFRβ, SYN, PSD95, MAP-2, ZO-1, claudin-5, occludin, Keap-1, and Nrf-2 were analyzed using western blotting or immunofluorescence, and the activities MDA, SOD, CAT, and GSH-Px were analyzed using kits. Results TGs treatment remarkably decreased neurological deficit scores and infarction volumes, promoted angiogenesis and neural remodeling, and effectively maintained blood-brain-barrier integrity compared with the model group. Furthermore, TGs significantly decreased MDA levels and increased antioxidant activities (SOD, CAT, and GSH-Px) in brains. Meanwhile, TGs remarkably downregulated Keap-1 expression and facilitated Nrf-2 nuclear translocation. On the contrary, no protective effects were observed for PSs and OSs groups. Conclusion TGs are the main active components of C. deserticola against MCAO/R-induced cerebral injury, and protection is mainly via the Nrf-2/Keap-1 pathway.
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Affiliation(s)
- Fujiang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Ruiyan Li
- Department of Pharmacology, Changzhi Medical College, Shanxi, China
| | - Pengfei Tu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Jianping Chen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, Hong Kong
| | - Kewu Zeng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Yong Jiang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
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29
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Genetics and Other Omics in Pediatric Pulmonary Arterial Hypertension. Chest 2020; 157:1287-1295. [PMID: 32006592 DOI: 10.1016/j.chest.2020.01.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/09/2019] [Accepted: 01/07/2020] [Indexed: 12/15/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a rare disease with high mortality despite therapeutic advances. Clinical management of children with PAH is particularly challenging because of increased complexity of disease etiology and clinical presentation, and the lack of data from pediatric-specific clinical trials. In children, PAH often develops in association with congenital heart disease and other developmental disorders. Emerging data from genetic studies of pediatric-onset PAH indicate that the genetic basis is different than that of adults. There is a greater genetic burden in children, with rare genetic factors contributing to at least 35% of pediatric-onset idiopathic PAH (IPAH) compared with approximately 11% of adult-onset IPAH. De novo variants are the most frequent monogenetic cause of PAH in children, likely contributing to approximately 15% of all cases. Rare deleterious variants in BMPR2 contribute to pediatric-onset IPAH and familial PAH with similar frequency as adult-onset disease but rarely explain cases of PAH associated with other diseases. Rare deleterious variants in developmental genes-including TBX4, SOX17, and other genes requiring confirmation in larger cohorts-are emerging as important contributors to pediatric-onset disease. Because each causal gene contributes to only a small number of cases, large cohorts of pediatric-onset PAH are needed to further identify the unique etiologic differences of PAH in children. We propose a genetics-first approach followed by focused phenotyping of pediatric patients grouped by genetic diagnosis to define endophenotypes that can be used to improve risk stratification and treatment.
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Xian Z, Choi YH, Zheng M, Jiang J, Zhao Y, Wang C, Li J, Li Y, Li L, Piao H, Yan G. Imperatorin alleviates ROS-mediated airway remodeling by targeting the Nrf2/HO-1 signaling pathway. Biosci Biotechnol Biochem 2020; 84:898-910. [PMID: 31900049 DOI: 10.1080/09168451.2019.1710107] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this study, we investigated the role and mechanism of imperatorin (IMP) in chronic inflammation and airway remodeling. The levels of TNF-α, IL-1β, IL-6, IL-8, VEGF, α-SMA, and ROS were detected by ELISA, immunohistochemistry (IHC), immunofluorescence, and Western blot. In addition, we evaluated the effect of IMP on MAPK, PI3K/Akt, NF-κB, and Nrf2/HO-1 signaling pathways. IMP treatment obviously attenuated the production of inflammatory cytokines and inflammatory cells in bronchoalveolar lavage fluid of OVA-induced airway remodeling model. Meanwhile, it significantly inhibited inflammatory cell infiltration, goblet cell hyperplasia, collagen deposition, VEGF production, α-SMA, and ROS expression. Our study has shown that IMP could regulate the signaling pathways including MAPK, PI3K/Akt, NF-κB, and Nrf2/HO-1 to release the inflammatory responses. IMP might attenuate airway remodeling by the down-regulation of Nrf2/HO-1/ROS/PI3K/Akt, Nrf2/HO-1/ROS/MAPK, and Nrf2/HO-1/ROS/NF-κB signaling pathways.
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Affiliation(s)
- Zhemin Xian
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, P.R. China
| | - Yun Ho Choi
- Department of Anatomy, Medical School, Institute for Medical Sciences, Chonbuk National University, Jeonju, Republic of Korea
| | - Mingyu Zheng
- College of Pharmacy, Yanbian University, Yanji, P.R. China
| | - Jingzhi Jiang
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, P.R. China
| | - Yuzhe Zhao
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, P.R. China
| | - Chongyang Wang
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, P.R. China
| | - Junfeng Li
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, P.R. China
| | - Yan Li
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, P.R. China
| | - Liangchang Li
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, P.R. China
| | - Hongmei Piao
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, P.R. China
| | - Guanghai Yan
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, P.R. China
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Shah FA, Li T, Kury LTA, Zeb A, Khatoon S, Liu G, Yang X, Liu F, Yao H, Khan AU, Koh PO, Jiang Y, Li S. Pathological Comparisons of the Hippocampal Changes in the Transient and Permanent Middle Cerebral Artery Occlusion Rat Models. Front Neurol 2019; 10:1178. [PMID: 31798514 PMCID: PMC6868119 DOI: 10.3389/fneur.2019.01178] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 10/22/2019] [Indexed: 01/04/2023] Open
Abstract
Ischemic strokes are categorized by permanent or transient obstruction of blood flow, which impedes delivery of oxygen and essential nutrients to brain. In the last decade, the therapeutic window for tPA has increased from 3 to 5-6 h, and a new technique, involving the mechanical removal of the clot (endovascular thrombectomy) to allow reperfusion of the injured area, is being used more often. This last therapeutic approach can be done until 24 h after stroke onset. Due to this fact, more acute ischemic stroke patients are now being recanalized, and so tMCAO is probably the "best" model to address these patients that have a potential good outcome in terms of survival and functional recovery. However, permanent occlusion patients are also important, not only to increase survival rate but also to improve functional outcomes, although these are more difficult to achieve. So, both models are important, and which target different stroke patients in the clinical scenario. Hippocampus has a vital role in memory and cognition, is prone to ischemic induced neurodegeneration. This study was designed to delineate the molecular, pathological, and neurological changes in rat models of t-MCAO, permanent MCAO (pMCAO), and pMCAO with diabetic conditions in hippocampal tissue. Our results showed that these three models showed distinct discrepancies at numerous pathological process, including key signaling molecules involved in neuronal apoptosis, glutamate induced excitotoxicity, neuroinflammation, oxidative stress, and neurotrophic changes. Our result suggests that the two commonly used MCAO models exhibited tremendous differences in terms of neuronal cell loss, glutamate excitotoxic related signaling, synaptic transmission markers, neuron inflammatory and oxidative stress molecules. These differences may reflect the variations in different models, which may provide valuable information for mechanistic and therapeutic inconsistences as experienced in both preclinical models and clinical trials.
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Affiliation(s)
- Fawad Ali Shah
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China.,Department of Pharmacology, Riphah Institute of Pharmaceutical Sciences, International University, Islamabad, Pakistan
| | - Tao Li
- Department of Forensic Medicine, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Lina Tariq Al Kury
- College of Natural and Health Sciences, Zayed University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Alam Zeb
- Department of Pharmacology, Riphah Institute of Pharmaceutical Sciences, International University, Islamabad, Pakistan
| | - Shehla Khatoon
- Department of Anatomy, Khyber Medical College, Khyber Medical University, Peshawar, Pakistan
| | - Gongping Liu
- Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Xifei Yang
- Key Laboratory of Modern Toxicology of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Fang Liu
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health, Campbell Research Institute, Toronto, ON, Canada
| | - Huo Yao
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Arif-Ullah Khan
- Department of Pharmacology, Riphah Institute of Pharmaceutical Sciences, International University, Islamabad, Pakistan
| | - Phil Ok Koh
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju-si, South Korea
| | - Yuhua Jiang
- Cancer Centre, The Second Hospital of Shandong University, Jinan, China
| | - Shupeng Li
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health, Campbell Research Institute, Toronto, ON, Canada
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Abstract
Ageing is the main risk factor for the development of cardiovascular diseases. A central mechanism by which ageing promotes vascular pathologies is compromising endothelial health. The age-related attenuation of endothelium-dependent dilator responses (endothelial dysfunction) associated with impairment of angiogenic processes and the subsequent pathological remodelling of the microcirculation contribute to compromised tissue perfusion and exacerbate functional decline in older individuals. This Review focuses on cellular, molecular, and functional changes that occur in the endothelium during ageing. We explore the links between oxidative and nitrative stress and the conserved molecular pathways affecting endothelial dysfunction and impaired angiogenesis during ageing. We also speculate on how these pathological processes could be therapeutically targeted. An improved understanding of endothelial biology in older patients is crucial for all cardiologists because maintenance of a competently functioning endothelium is critical for adequate tissue perfusion and long-term cardiac health.
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Yasuda D, Kobayashi D, Akahoshi N, Ohto-Nakanishi T, Yoshioka K, Takuwa Y, Mizuno S, Takahashi S, Ishii S. Lysophosphatidic acid-induced YAP/TAZ activation promotes developmental angiogenesis by repressing Notch ligand Dll4. J Clin Invest 2019; 129:4332-4349. [PMID: 31335323 DOI: 10.1172/jci121955] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Lysophosphatidic acid (LPA) is a potent lipid mediator with various biological functions mediated through six G protein-coupled receptors (GPCRs), LPA1-6. Previous studies have demonstrated that LPA-Gα12/Gα13 signaling plays an important role in embryonic vascular development. However, the responsible LPA receptors and underlying mechanisms are poorly understood. Here, we show a critical role of LPA4 and LPA6 in developmental angiogenesis. In mice, Lpa4;Lpa6 double knockout (DKO) embryos were lethal due to global vascular deficiencies, and endothelial cell (EC)-specific Lpa4;Lpa6 DKO retinas had impaired sprouting angiogenesis. Mechanistically, LPA activated the transcriptional regulators YAP and TAZ through LPA4/LPA6-mediated Gα12/Gα13-Rho-ROCK signaling in ECs. YAP/TAZ knockdown increased β-catenin- and Notch intracellular domain (NICD)-mediated endothelial expression of the Notch ligand delta-like 4 (DLL4). Fibrin gel sprouting assay revealed that LPA4/LPA6, Gα12/Gα13, or YAP/TAZ knockdown consistently blocked EC sprouting, which was rescued by a Notch inhibitor. Of note, the inhibition of Notch signaling also ameliorated impaired retinal angiogenesis in EC-specific Lpa4;Lpa6 DKO mice. Overall, these results suggest that the Gα12/Gα13-coupled receptors LPA4 and LPA6 synergistically regulate endothelial Dll4 expression through YAP/TAZ activation. This could in part account for the mechanism of YAP/TAZ-mediated developmental angiogenesis. Our findings provide a novel insight into the biology of GPCR-activated YAP/TAZ.
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Affiliation(s)
- Daisuke Yasuda
- Department of Immunology, Akita University Graduate School of Medicine, Akita, Japan
| | - Daiki Kobayashi
- Department of Immunology, Akita University Graduate School of Medicine, Akita, Japan
| | - Noriyuki Akahoshi
- Department of Immunology, Akita University Graduate School of Medicine, Akita, Japan
| | - Takayo Ohto-Nakanishi
- Department of Immunology, Akita University Graduate School of Medicine, Akita, Japan
| | - Kazuaki Yoshioka
- Department of Vascular Molecular Physiology, Kanazawa University Graduate School of Medicine, Ishikawa, Japan
| | - Yoh Takuwa
- Department of Vascular Molecular Physiology, Kanazawa University Graduate School of Medicine, Ishikawa, Japan
| | - Seiya Mizuno
- Laboratory Animal Resource Center, University of Tsukuba, Ibaraki, Japan
| | - Satoru Takahashi
- Laboratory Animal Resource Center, University of Tsukuba, Ibaraki, Japan
| | - Satoshi Ishii
- Department of Immunology, Akita University Graduate School of Medicine, Akita, Japan
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Magnesium lithospermate B protects the endothelium from inflammation-induced dysfunction through activation of Nrf2 pathway. Acta Pharmacol Sin 2019; 40:867-878. [PMID: 30617294 DOI: 10.1038/s41401-018-0189-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 10/18/2018] [Indexed: 12/22/2022] Open
Abstract
Magnesium lithospermate B (MLB) is an active component of Salvia miltiorrhiza Radix, a traditional Chinese herb used in treating cardiovascular diseases. In this study, we investigated the protective effects of MLB against inflammation-induced endothelial dysfunction in vitro and in vivo, and the underlying mechanisms. Endothelial dysfunction was induced in human dermal microvascular endothelial cells (HMEC-1) in vitro by lipopolysaccharide (LPS, 1 μg/mL). We showed that pretreatment with MLB (10-100 μM) dose-dependently inhibited LPS-induced upregulation of inflammatory cytokines ICAM1, VCAM1, and TNFα, which contributed to reduced leukocytes adhesion and attenuation of endothelial hyperpermeability in HMEC-1 cells. SD rats were injected with LPS (10 mg/kg, ip) to induce endothelial dysfunction in vivo. We showed that pretreatment with MLB (25-100 mg/kg, ip) dose-dependently restored LPS-impaired endothelial-dependent vasodilation in superior mesenteric artery (SMA), attenuated leukocyte adhesion in mesenteric venules and decreased vascular leakage in the lungs. We further elucidated the mechanisms underlying the protective effects of MLB, and revealed that MLB pretreatment inhibited NF-κB activation through inhibition of IκBα degradation and subsequent phosphorylation of NF-κB p65 in vitro and in vivo. In HMEC-1 cells, MLB pretreatment activated the nuclear factor erythroid-2-related factor 2 (Nrf2) pathway. Knockdown of Nrf2 with siRNA abolished the inhibitory effects of MLB on IκBα degradation and ICAM1 up-regulation, which were mimicked by PKC inhibition (Gö6983) or PI3K/Akt inhibition (LY294002). In summary, our results demonstrate that MLB inhibits NF-κB activation through PKC- and PI3K/Akt-mediated Nrf2 activation in HMEC-1 cells and protects against LPS-induced endothelial dysfunction in murine model of acute inflammation.
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Kloska D, Kopacz A, Cysewski D, Aepfelbacher M, Dulak J, Jozkowicz A, Grochot-Przeczek A. Nrf2 Sequesters Keap1 Preventing Podosome Disassembly: A Quintessential Duet Moonlights in Endothelium. Antioxid Redox Signal 2019; 30:1709-1730. [PMID: 30198307 DOI: 10.1089/ars.2018.7505] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AIMS Nrf2 (nuclear factor erythroid 2-like 2) is a transcription factor known to modulate blood vessel formation. Various experimental settings, however, attribute to Nrf2 either stimulatory or repressive influence on angiogenesis. Our findings unveil the mechanism of Nrf2-dependent vessel formation, which reaches beyond transactivation of gene expression and reconciles previous discrepancies. RESULTS We provide evidence that growth differentiation factor 15 (GDF-15)- and stromal cell-derived factor 1 (SDF-1)-induced angiogenesis strongly depends on the presence of Nrf2 protein but does not rely on its transcriptional activity. Instead, Nrf2 serves as a protein restraining Keap1 (Kelch-like ECH-associated protein 1), its known transcriptional repressor. Angiogenic response is abrogated in Nrf2-deficient endothelial cells but not in cells expressing dominant negative form or Keap1-binding fragment of Nrf2. Deficiency of Nrf2 protein available for Keap1 leads to the overabundance of RhoGAP1 (Rho GTPase-activating protein 1), the protein regulating cell division cycle 42 (Cdc42) activity. This impairs podosome assembly and disrupts actin rearrangements, thereby preventing angiogenesis. Effects of Nrf2 deficiency can be rescued by concomitant knockdown of RhoGAP1 or Keap1. Importantly, in the established murine model of Nrf2 deficiency, the N-terminal fragment of Nrf2 containing Keap1 binding domain is preserved. Thus, this model can be used to characterize Nrf2 as a transcription factor, but not as a Keap1-sequestering protein. Innovation and Conclusion: To date, the significance of Nrf2 in cell function has been ascribed solely to the regulation of transcription. We demonstrate that Nrf2 serves as a protein tethering Keap1 to allow podosome assembly and angiogenesis. Moreover, we emphasize that the new Nrf2 function of a Keap1 scavenger implies revisiting the interpretation of some of the previous data on the Nrf2-Keap1 system.
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Affiliation(s)
- Damian Kloska
- 1 Department of Medical Biotechnology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University , Krakow, Poland
| | - Aleksandra Kopacz
- 1 Department of Medical Biotechnology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University , Krakow, Poland
| | - Dominik Cysewski
- 2 Mass Spectrometry Laboratory, Institute of Biochemistry and Biophysics , Polish Academy of Science, Warsaw, Poland
| | - Martin Aepfelbacher
- 3 Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf , Hamburg, Germany
| | - Jozef Dulak
- 1 Department of Medical Biotechnology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University , Krakow, Poland
| | - Alicja Jozkowicz
- 1 Department of Medical Biotechnology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University , Krakow, Poland
| | - Anna Grochot-Przeczek
- 1 Department of Medical Biotechnology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University , Krakow, Poland
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Hu M, Zhang Y, Guo X, Jia W, Liu G, Zhang J, Li J, Cui P, Sferruzzi-Perri AN, Han Y, Wu X, Ma H, Brännström M, Shao LR, Billig H. Hyperandrogenism and insulin resistance induce gravid uterine defects in association with mitochondrial dysfunction and aberrant reactive oxygen species production. Am J Physiol Endocrinol Metab 2019; 316:E794-E809. [PMID: 30860876 DOI: 10.1152/ajpendo.00359.2018] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Women with polycystic ovary syndrome (PCOS) are at increased risk of miscarriage, which often accompanies the hyperandrogenism and insulin resistance seen in these patients. However, neither the combinatorial interaction between these two PCOS-related etiological factors nor the mechanisms of their actions in the uterus during pregnancy are well understood. We hypothesized that hyperandrogensim and insulin resistance exert a causative role in miscarriage by inducing defects in uterine function that are accompanied by mitochondrial-mediated oxidative stress, inflammation, and perturbed gene expression. Here, we tested this hypothesis by studying the metabolic, endocrine, and uterine abnormalities in pregnant rats after exposure to daily injection of 5α-dihydrotestosterone (DHT; 1.66 mg·kg body wt-1·day-1) and/or insulin (6.0 IU/day) from gestational day 7.5 to 13.5. We showed that whereas DHT-exposed and insulin-exposed pregnant rats presented impaired insulin sensitivity, DHT + insulin-exposed pregnant rats exhibited hyperandrogenism and peripheral insulin resistance, which mirrors pregnant PCOS patients. Compared with controls, hyperandrogenism and insulin resistance in the dam were associated with alterations in uterine morphology and aberrant expression of genes responsible for decidualization (Prl8a2, Fxyd2, and Mt1g), placentation (Fcgr3 and Tpbpa), angiogenesis (Flt1, Angpt1, Angpt2, Ho1, Ccl2, Ccl5, Cxcl9, and Cxcl10) and insulin signaling (Akt, Gsk3, and Gluts). Moreover, we observed changes in uterine mitochondrial function and homeostasis (i.e., mitochondrial DNA copy number and the expression of genes responsible for mitochondrial fusion, fission, biogenesis, and mitophagy) and suppression of both oxidative and antioxidative defenses (i.e., reactive oxygen species, Nrf2 signaling, and interactive networks of antioxidative stress responses) in response to the hyperandrogenism and insulin resistance. These findings demonstrate that hyperandrogenism and insulin resistance induce mitochondria-mediated damage and a resulting imbalance between oxidative and antioxidative stress responses in the gravid uterus.
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Affiliation(s)
- Min Hu
- Department of Traditional Chinese Medicine, First Affiliated Hospital of Guangzhou Medical University , Guangzhou , China
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Yuehui Zhang
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
- Department of Obstetrics and Gynecology, Key Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine , Harbin , China
| | - Xiaozhu Guo
- Department of Obstetrics and Gynecology, Key Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine , Harbin , China
| | - Wenyan Jia
- Department of Obstetrics and Gynecology, Key Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine , Harbin , China
| | - Guoqi Liu
- Department of Obstetrics and Gynecology, Key Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine , Harbin , China
| | - Jiao Zhang
- Department of Acupuncture and Moxibustion, Second Affiliated Hospital, Heilongjiang University of Chinese Medicine , Harbin , China
| | - Juan Li
- Department of Traditional Chinese Medicine, First Affiliated Hospital of Guangzhou Medical University , Guangzhou , China
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Peng Cui
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Amanda Nancy Sferruzzi-Perri
- Centre for Trophoblast Research, Department of Physiology, Development, and Neuroscience, University of Cambridge , Cambridge , United Kingdom
| | - Yanhua Han
- Department of Obstetrics and Gynecology, Key Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine , Harbin , China
| | - Xiaoke Wu
- Department of Obstetrics and Gynecology, Key Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine , Harbin , China
| | - Hongxia Ma
- Department of Traditional Chinese Medicine, First Affiliated Hospital of Guangzhou Medical University , Guangzhou , China
| | - Mats Brännström
- Department of Obstetrics and Gynecology, Sahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Linus R Shao
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
| | - Håkan Billig
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden
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Zhong X, Qiu J, Kang J, Xing X, Shi X, Wei Y. Exposure to tris(1,3-dichloro-2-propyl) phosphate (TDCPP) induces vascular toxicity through Nrf2-VEGF pathway in zebrafish and human umbilical vein endothelial cells. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 247:293-301. [PMID: 30685670 DOI: 10.1016/j.envpol.2018.12.066] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/20/2018] [Accepted: 12/20/2018] [Indexed: 06/09/2023]
Abstract
The growing production and extensive use of organophosphate flame retardants (OPFRs) have led to an increase in their environmental distribution and human exposure. Developmental toxicity is a major concern of OPFRs' adverse health effects. However, the impact of OPFRs exposure on vascular development and the toxicity pathway for developmental defects are poorly understood. In this study, we investigated the effects of exposure to tris(1,3-dichloro-2-propyl) phosphate (TDCPP), a frequently detected OPFR, on early vascular development, and the possible role of nuclear factor erythroid 2-related factor (Nrf2)-dependent angiogenic pathway in TDCPP's vascular toxicity. TDCPP exposure at 300 and 500 μg/L impeded the growth of intersegmental vessels (ISV), a type of microvessels, as early as 30 hpf. Consistently, a similar pattern of decreased extension and remodeling of common cardinal vein (CCV), a typical macrovessel, was observed in zebrafish at 48 hpf and 72 hpf. Developing vasculature in zebrafish was more sensitive than general developmental parameters to TDCPP exposure. The expression of genes related to VEGF signaling pathway dose-dependently decreased in TDCPP-treated larvae. In in vitro experiments using human umbilical vein endothelial cells (HUVECs), the increased cell proliferation induced by VEGF was suppressed by TDCPP exposure in a dose-dependent fashion. In addition, we found a repression of Nrf2 expression and activity in TDCPP-treated larvae and HUVECs. Strikingly, the application of CDDO-Im, a potent Nrf2 activator, enhanced VEGF and protected against defective vascular development in zebrafish. Our results reveal that vascular impairment is a sensitive index for early exposure to TDCPP, which could be considered in the environmental risk assessment of OPFRs. The identification of Nrf2-mediating VEGF pathway provides new insight into the adverse outcome pathway (AOP) of OPFRs.
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Affiliation(s)
- Xiali Zhong
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Jiahuang Qiu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Jianmeng Kang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xiumei Xing
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xiongjie Shi
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, the Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China
| | - Yanhong Wei
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
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Tang X, Wu S, Shen L, Wei Y, Cao X, Wang Y, Long C, Zhou Y, Li D, Huang F, Liu B, Wei G. Di-(2-ethylhexyl) phthalate (DEHP)-induced testicular toxicity through Nrf2-mediated Notch1 signaling pathway in Sprague-Dawley rats. ENVIRONMENTAL TOXICOLOGY 2018; 33:720-728. [PMID: 29663635 DOI: 10.1002/tox.22559] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 03/14/2018] [Accepted: 03/25/2018] [Indexed: 06/08/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) is an environmental endocrine disruptor widely used in China that is harmful to the male reproductive system. Many studies have shown that DEHP causes testicular toxicity through oxidative stress, but the specific mechanism is unknown. Because the Notch pathway is a key mechanism for regulating cell growth and proliferation, we investigated whether Notch is involved in DEHP-induced testicular toxicity and whether vitamins E and C could rescue testicular impairment in Sprague-Dawley (SD) rats. Compared with the control group, we found that DEHP exposure induced testicular toxicity through oxidative stress injury, and it decreased the testosterone level (P < .01) and upregulated nuclear factor-erythroid 2 related factor (Nrf2) expression (P < .01). Therefore, because oxidative stress might be the initiating factor of DEHP-induced testicular toxicity, treatment with the antioxidant vitamins E and C activated the Notch1 signaling pathway in the testis and in Leydig cells. Treatment with vitamins E and C normalized the oxidative stress state after DEHP exposure and restored testicular development to be similar to the control group. In summary, antioxidant vitamins E and C may be used to treat DEHP-induced testicular toxicity.
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Affiliation(s)
- Xiangliang Tang
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Shengde Wu
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
- Department of Pediatric Urology Surgery, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Lianju Shen
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yi Wei
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Xining Cao
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yangcai Wang
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Chunlan Long
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yue Zhou
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Dian Li
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Fangyuan Huang
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Bo Liu
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Guanghui Wei
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
- Department of Pediatric Urology Surgery, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
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Li X, Zha X, Wang Y, Jia R, Hu B, Zhao B. Toxic effects and foundation of proton radiation on the early-life stage of zebrafish development. CHEMOSPHERE 2018; 200:302-312. [PMID: 29494911 DOI: 10.1016/j.chemosphere.2018.02.141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 06/08/2023]
Abstract
Proton is a major particle of space radiation environment and a prospective radiotherapy beam. However, its risk needs to be fully evaluated for the understanding and to establish the better protective strategy for astronaut and patient. Zebrafish is an ideal model for the toxicity studies on medicines and environmental genetic toxicants. In the current study, embryos of zebrafish at 24 h post-fertilization (hpf) were exposed to proton beam. Some toxic parameters of embryo-larval development were investigated. Microarray combining with qRT-PCR were used to detect the gene expression situation. Generally, fractions of a variety of abnormal phenotypes of embryos and larvae increased in a dose-dependent manner after irradiation. The copy number of mitochondria, the basal respiration rate and the maximum respiration rate of embryos significantly decreased after irradiation. Microarray data demonstrated that MAPK signaling pathway, cell communication, glycolysis and TGF-β signaling pathway were significantly affected in the irradiated group. The expressions of matrix metallopeptidase 9 (mmp9) and TIMP metallopeptidase inhibitor 2b (timp2b) genes, and enzymatic activity of MMP9 were significantly upregulated in irradiated group. Overall, these results suggest that acute radiation of proton severely affects the development of organism and results in aberration occurrence in the early stage of zebrafish development, which may relates to mitochondrial and glycolytic dysfunction.
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Affiliation(s)
- Xiaoman Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China; CAS Key Laboratory of Heavy Ion Radiation Biology and Medicine & Key Laboratory of Space Radiobiology of Gansu Province, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaodan Zha
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China
| | - Yongan Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China
| | - Rong Jia
- CAS Key Laboratory of Heavy Ion Radiation Biology and Medicine & Key Laboratory of Space Radiobiology of Gansu Province, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Burong Hu
- CAS Key Laboratory of Heavy Ion Radiation Biology and Medicine & Key Laboratory of Space Radiobiology of Gansu Province, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Baoquan Zhao
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China.
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40
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Zhu N, Gonzaga-Jauregui C, Welch C, Ma L, Qi H, King AK, Krishnan U, Rosenzweig EB, Ivy DD, Austin ED, Hamid R, Nichols WC, Pauciulo MW, Lutz KA, Sawle A, Reid JG, Overton JD, Baras A, Dewey F, Shen Y, Chung WK. Exome Sequencing in Children With Pulmonary Arterial Hypertension Demonstrates Differences Compared With Adults. CIRCULATION. GENOMIC AND PRECISION MEDICINE 2018; 11:e001887. [PMID: 29631995 PMCID: PMC5896781 DOI: 10.1161/circgen.117.001887] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 01/31/2018] [Indexed: 12/30/2022]
Abstract
BACKGROUND Pulmonary arterial hypertension (PAH) is a rare disease characterized by pulmonary arteriole remodeling, elevated arterial pressure and resistance, and subsequent heart failure. Compared with adult-onset disease, pediatric-onset PAH is more heterogeneous and often associated with worse prognosis. Although BMPR2 mutations underlie ≈70% of adult familial PAH (FPAH) cases, the genetic basis of PAH in children is less understood. METHODS We performed genetic analysis of 155 pediatric- and 257 adult-onset PAH patients, including both FPAH and sporadic, idiopathic PAH (IPAH). After screening for 2 common PAH risk genes, mutation-negative FPAH and all IPAH cases were evaluated by exome sequencing. RESULTS We observed similar frequencies of rare, deleterious BMPR2 mutations in pediatric- and adult-onset patients: ≈55% in FPAH and 10% in IPAH patients in both age groups. However, there was significant enrichment of TBX4 mutations in pediatric- compared with adult-onset patients (IPAH: 10/130 pediatric versus 0/178 adult-onset), and TBX4 carriers had younger mean age-of-onset compared with BMPR2 carriers. Mutations in other known PAH risk genes were infrequent in both age groups. Notably, among pediatric IPAH patients without mutations in known risk genes, exome sequencing revealed a 2-fold enrichment of de novo likely gene-damaging and predicted deleterious missense variants. CONCLUSIONS Mutations in known PAH risk genes accounted for ≈70% to 80% of FPAH in both age groups, 21% of pediatric-onset IPAH, and 11% of adult-onset IPAH. Rare, predicted deleterious variants in TBX4 are enriched in pediatric patients and de novo variants in novel genes may explain ≈19% of pediatric-onset IPAH cases.
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Affiliation(s)
- Na Zhu
- Department of Pediatrics, Columbia University Medical Center, New York
- Department of Systems Biology, Columbia University, New York, NY
| | | | - Carrie Welch
- Department of Pediatrics, Columbia University Medical Center, New York
| | - Lijiang Ma
- Department of Pediatrics, Columbia University Medical Center, New York
| | - Hongjian Qi
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY
- Department of Systems Biology, Columbia University, New York, NY
| | | | - Usha Krishnan
- Department of Pediatrics, Columbia University Medical Center, New York
| | - Erika B. Rosenzweig
- Department of Pediatrics, Columbia University Medical Center, New York
- Department of Medicine, Columbia University Medical Center, New York
| | - D. Dunbar Ivy
- Children’s Hospital Colorado, Department of Pediatric Cardiology, Denver, CO
| | - Eric D. Austin
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN
| | - Rizwan Hamid
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN
| | - William C. Nichols
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center & Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Michael W. Pauciulo
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center & Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Katie A. Lutz
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center & Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Ashley Sawle
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York
| | - Jeffrey G. Reid
- Regeneron Genetics Center, Regeneron Pharmaceuticals, Tarrytown
| | - John D. Overton
- Regeneron Genetics Center, Regeneron Pharmaceuticals, Tarrytown
| | - Aris Baras
- Regeneron Genetics Center, Regeneron Pharmaceuticals, Tarrytown
| | - Frederick Dewey
- Regeneron Genetics Center, Regeneron Pharmaceuticals, Tarrytown
| | - Yufeng Shen
- Department of Systems Biology, Columbia University, New York, NY
- Department of Biomedical Informatics, Columbia University, New York, NY
| | - Wendy K. Chung
- Department of Pediatrics, Columbia University Medical Center, New York
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York
- Department of Medicine, Columbia University Medical Center, New York
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41
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Kuosmanen SM, Kansanen E, Kaikkonen MU, Sihvola V, Pulkkinen K, Jyrkkänen HK, Tuoresmäki P, Hartikainen J, Hippeläinen M, Kokki H, Tavi P, Heikkinen S, Levonen AL. NRF2 regulates endothelial glycolysis and proliferation with miR-93 and mediates the effects of oxidized phospholipids on endothelial activation. Nucleic Acids Res 2018; 46:1124-1138. [PMID: 29161413 PMCID: PMC5815049 DOI: 10.1093/nar/gkx1155] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/12/2017] [Accepted: 11/01/2017] [Indexed: 01/02/2023] Open
Abstract
Phospholipids, such as 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine (PAPC), are the major components of cell membranes. Their exposure to reactive oxygen species creates oxidized phospholipids, which predispose to the development of chronic inflammatory diseases and metabolic disorders through endothelial activation and dysfunction. Although the effects of oxidized PAPC (oxPAPC) on endothelial cells have been previously studied, the underlying molecular mechanisms evoking biological responses remain largely unknown. Here, we investigated the molecular mechanisms of oxPAPC function with a special emphasis on NRF2-regulated microRNAs (miRNAs) in human umbilical vein endothelial cells (HUVECs) utilizing miRNA profiling, global run-on sequencing (GRO-seq), genome-wide NRF2 binding model, and RNA sequencing (RNA-seq) with miRNA overexpression and silencing. We report that the central regulators of endothelial activity, KLF2 for quiescence, PFKFB3 for glycolysis, and VEGFA, FOXO1 and MYC for growth and proliferation, are regulated by transcription factor NRF2 and the NRF2-regulated miR-106b∼25 cluster member, miR-93, in HUVECs. Mechanistically, oxPAPC was found to induce glycolysis and proliferation NRF2-dependently, and oxPAPC-dependent induction of the miR-106b∼25 cluster was mediated by NRF2. Additionally, several regulatory loops were established between NRF2, miR-93 and the essential regulators of healthy endothelium, collectively implying that NRF2 controls the switch between the quiescent and the proliferative endothelial states together with miR-93.
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Affiliation(s)
- Suvi M Kuosmanen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Emilia Kansanen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Minna U Kaikkonen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Virve Sihvola
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Kati Pulkkinen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Henna-Kaisa Jyrkkänen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Pauli Tuoresmäki
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
| | - Juha Hartikainen
- School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
- Heart Centre, Kuopio University Hospital, 70211 Kuopio, Finland
| | | | - Hannu Kokki
- School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
- Anaesthesia and Operative Services, 70211 Kuopio University Hospital, Kuopio, Finland
| | - Pasi Tavi
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Sami Heikkinen
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
| | - Anna-Liisa Levonen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland
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42
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Huang Y, Mao Y, Li H, Shen G, Nan G. Knockdown of Nrf2 inhibits angiogenesis by downregulating VEGF expression through PI3K/Akt signaling pathway in cerebral microvascular endothelial cells under hypoxic conditions. Biochem Cell Biol 2018; 96:475-482. [PMID: 29373803 DOI: 10.1139/bcb-2017-0291] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Ischemic stroke is a major cerebrovascular disease resulting from a transient or permanent local reduction of cerebral blood flow. Angiogenesis plays an important role in cerebral microvascular repair after ischemic stroke. This study aimed at investigating the effect of NF-E2-related factor 2 (Nrf2) on the angiogenesis of mouse cerebral microvascular endothelial bEnd.3 cells in a hypoxic environment. We found that Nrf2 expression was temporarily increased in hypoxia-induced bEnd.3 cells. Knockdown of Nrf2 inhibited the proliferation, migration, as well as tube formation in hypoxia-induced bEnd.3 cells. Meanwhile, vascular endothelial growth factor and PI3K/Akt signaling pathways were identified to be regulated by Nrf2 in hypoxia-induced bEnd.3 cells. It was found that silencing of Nrf2 downregulated the expression levels of NAD(P)H:quinine oxidoreductase-1, vascular endothelial growth factor, p-Akt, and heme oxygenase-1 in hypoxia-induced bEnd.3 cells. Data suggested that hypoxia induced the transient increase of Nrf2, which plays a key role in the angiogenesis of cerebral microangiogenesis, and that Nrf2 regulates the proliferation, migration, as well as tube formation likely through PI3K/Akt signaling pathway in hypoxia-induced bEnd.3 cells. Our study provides proof of concept for the modulation of Nrf2, so as to tilt the balance toward angiogenesis, representing a therapeutic strategy for hypoxia or ischemia disorders such as stroke.
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Affiliation(s)
- Yujing Huang
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China.,Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
| | - Ying Mao
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China.,Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
| | - Huiying Li
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China.,Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
| | - Guangxun Shen
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China.,Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
| | - Guangxian Nan
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China.,Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China
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43
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Ruiz S, Chandakkar P, Zhao H, Papoin J, Chatterjee PK, Christen E, Metz CN, Blanc L, Campagne F, Marambaud P. Tacrolimus rescues the signaling and gene expression signature of endothelial ALK1 loss-of-function and improves HHT vascular pathology. Hum Mol Genet 2017; 26:4786-4798. [PMID: 28973643 PMCID: PMC5886173 DOI: 10.1093/hmg/ddx358] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/09/2017] [Accepted: 09/11/2017] [Indexed: 01/02/2023] Open
Abstract
Hereditary hemorrhagic telangiectasia (HHT) is a highly debilitating and life-threatening genetic vascular disorder arising from endothelial cell (EC) proliferation and hypervascularization, for which no cure exists. Because HHT is caused by loss-of-function mutations in bone morphogenetic protein 9 (BMP9)-ALK1-Smad1/5/8 signaling, interventions aimed at activating this pathway are of therapeutic value. We interrogated the whole-transcriptome in human umbilical vein ECs (HUVECs) and found that ALK1 signaling inhibition was associated with a specific pro-angiogenic gene expression signature, which included a significant elevation of DLL4 expression. By screening the NIH clinical collections of FDA-approved drugs, we identified tacrolimus (FK-506) as the most potent activator of ALK1 signaling in BMP9-challenged C2C12 reporter cells. In HUVECs, tacrolimus activated Smad1/5/8 and opposed the pro-angiogenic gene expression signature associated with ALK1 loss-of-function, by notably reducing Dll4 expression. In these cells, tacrolimus also inhibited Akt and p38 stimulation by vascular endothelial growth factor, a major driver of angiogenesis. In the BMP9/10-immunodepleted postnatal retina-a mouse model of HHT vascular pathology-tacrolimus activated endothelial Smad1/5/8 and prevented the Dll4 overexpression and hypervascularization associated with this model. Finally, tacrolimus stimulated Smad1/5/8 signaling in C2C12 cells expressing BMP9-unresponsive ALK1 HHT mutants and in HHT patient blood outgrowth ECs. Tacrolimus repurposing has therefore therapeutic potential in HHT.
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Affiliation(s)
- Santiago Ruiz
- Litwin-Zucker Research Center for the Study of Alzheimer's Disease
| | | | - Haitian Zhao
- Litwin-Zucker Research Center for the Study of Alzheimer's Disease
| | | | - Prodyot K Chatterjee
- Center for Biomedical Science, The Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
| | - Erica Christen
- Litwin-Zucker Research Center for the Study of Alzheimer's Disease
| | - Christine N Metz
- Center for Biomedical Science, The Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
- Hofstra Northwell School of Medicine, Hempstead, NY 11549, USA
| | - Lionel Blanc
- Center for Autoimmune and Musculoskeletal Disorders
- Hofstra Northwell School of Medicine, Hempstead, NY 11549, USA
| | - Fabien Campagne
- The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine
- Department of Physiology and Biophysics, The Weill Cornell Medical College, New York, NY 10021, USA
| | - Philippe Marambaud
- Litwin-Zucker Research Center for the Study of Alzheimer's Disease
- Hofstra Northwell School of Medicine, Hempstead, NY 11549, USA
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44
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Duran CL, Howell DW, Dave JM, Smith RL, Torrie ME, Essner JJ, Bayless KJ. Molecular Regulation of Sprouting Angiogenesis. Compr Physiol 2017; 8:153-235. [PMID: 29357127 DOI: 10.1002/cphy.c160048] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The term angiogenesis arose in the 18th century. Several studies over the next 100 years laid the groundwork for initial studies performed by the Folkman laboratory, which were at first met with some opposition. Once overcome, the angiogenesis field has flourished due to studies on tumor angiogenesis and various developmental models that can be genetically manipulated, including mice and zebrafish. In addition, new discoveries have been aided by the ability to isolate primary endothelial cells, which has allowed dissection of various steps within angiogenesis. This review will summarize the molecular events that control angiogenesis downstream of biochemical factors such as growth factors, cytokines, chemokines, hypoxia-inducible factors (HIFs), and lipids. These and other stimuli have been linked to regulation of junctional molecules and cell surface receptors. In addition, the contribution of cytoskeletal elements and regulatory proteins has revealed an intricate role for mobilization of actin, microtubules, and intermediate filaments in response to cues that activate the endothelium. Activating stimuli also affect various focal adhesion proteins, scaffold proteins, intracellular kinases, and second messengers. Finally, metalloproteinases, which facilitate matrix degradation and the formation of new blood vessels, are discussed, along with our knowledge of crosstalk between the various subclasses of these molecules throughout the text. Compr Physiol 8:153-235, 2018.
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Affiliation(s)
- Camille L Duran
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - David W Howell
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Jui M Dave
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Rebecca L Smith
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Melanie E Torrie
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Jeffrey J Essner
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Kayla J Bayless
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
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45
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Vieceli Dalla Sega F, Aquila G, Fortini F, Vaccarezza M, Secchiero P, Rizzo P, Campo G. Context-dependent function of ROS in the vascular endothelium: The role of the Notch pathway and shear stress. Biofactors 2017; 43:475-485. [PMID: 28419584 DOI: 10.1002/biof.1359] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 03/12/2017] [Indexed: 12/15/2022]
Abstract
Reactive oxygen species (ROS) act as signal molecules in several biological processes whereas excessive, unregulated, ROS production contributes to the development of pathological conditions including endothelial dysfunction and atherosclerosis. The maintenance of a healthy endothelium depends on many factors and on their reciprocal interactions; in this framework, the Notch pathway and shear stress (SS) play two lead roles. Recently, evidence of a crosstalk between ROS, Notch, and SS, is emerging. The aim of this review is to describe the way ROS interact with the Notch pathway and SS protecting from-or promoting-the development of endothelial dysfunction. © 2017 BioFactors, 43(4):475-485, 2017.
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Affiliation(s)
| | - Giorgio Aquila
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Francesca Fortini
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Mauro Vaccarezza
- Faculty of Health Sciences, School of Biomedical Sciences, Curtin University, Perth, Australia
| | - Paola Secchiero
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
- Laboratory for Technologies of Advanced Therapies (LTTA) Center, Ferrara, Italy
| | - Paola Rizzo
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
- Maria Cecilia Hospital, GVM Care & Research, E.S. Health Science Foundation, Cotignola, (RA), Italy
| | - Gianluca Campo
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria S. Anna, Cona, (FE), Italy
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46
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Khalyfa A, Kheirandish-Gozal L, Khalyfa AA, Philby MF, Alonso-Álvarez ML, Mohammadi M, Bhattacharjee R, Terán-Santos J, Huang L, Andrade J, Gozal D. Circulating Plasma Extracellular Microvesicle MicroRNA Cargo and Endothelial Dysfunction in Children with Obstructive Sleep Apnea. Am J Respir Crit Care Med 2017; 194:1116-1126. [PMID: 27163713 DOI: 10.1164/rccm.201602-0323oc] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
RATIONALE Obese children are at increased risk for developing obstructive sleep apnea (OSA), and both of these conditions are associated with an increased risk for endothelial dysfunction (ED) in children, an early risk factor for atherosclerosis and cardiovascular disease. Although weight loss and treatment of OSA by adenotonsillectomy improve endothelial function, not every obese child or child with OSA develops ED. Exosomes are circulating extracellular vesicles containing functional mRNA and microRNA (miRNA) that can be delivered to other cells, such as endothelial cells. OBJECTIVES To investigate whether circulating exosomal miRNAs of children with OSA differentiate based on endothelial functional status. METHODS Obese children (body mass index z score >1.65) and nonobese children were recruited and underwent polysomnographic testing (PSG), and fasting endothelial function measurements and blood draws in the morning after PSG. Plasma exosomes were isolated from all subjects. Isolated exosomes were then incubated with confluent endothelial cell monolayer cultures. Electric cell-substrate impedance sensing systems were used to determine the ability of exosomes to disrupt the intercellular barrier formed by confluent endothelial cells. In addition, immunofluorescent assessments of zonula occludens-1 tight junction protein cellular distribution were conducted to examine endothelial barrier dysfunction. miRNA and mRNA arrays were also applied to exosomes and endothelial cells, and miRNA inhibitors and mimics were transfected for mechanistic assays. MEASUREMENTS AND MAIN RESULTS Plasma exosomes isolated from either obese children or nonobese children with OSA were primarily derived from endothelial cell sources and recapitulated ED, or its absence, in naive human endothelial cells and also in vivo when injected into mice. Microarrays identified a restricted signature of exosomal miRNAs that readily distinguished ED from normal endothelial function. Among the miRNAs, expression of exosomal miRNA-630 was reduced in children with ED and normalized after therapy along with restoration of endothelial function. Conversely, transfection of exosomes from subjects without ED with an miRNA-630 inhibitor induces the ED functional phenotype. Gene target discovery experiments further revealed that miRNA-630 regulates 416 gene targets in endothelial cells that include the Nrf2, AMP kinase, and tight junction pathways. CONCLUSIONS These observations elucidate a novel role of exosomal miRNA-360 as a putative key mediator of vascular function and cardiovascular disease risk in children with underlying OSA and/or obesity, and identify therapeutic targets.
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Affiliation(s)
- Abdelnaby Khalyfa
- 1 Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, and
| | - Leila Kheirandish-Gozal
- 1 Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, and
| | - Ahamed A Khalyfa
- 1 Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, and
| | - Mona F Philby
- 1 Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, and
| | - María Luz Alonso-Álvarez
- 2 Sleep Unit, CIBER of Respiratory Diseases, Instituto Carlos III, CIBERES, Hospital Universitario de Burgos, Burgos, Spain
| | - Meelad Mohammadi
- 1 Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, and
| | - Rakesh Bhattacharjee
- 1 Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, and
| | - Joaquin Terán-Santos
- 2 Sleep Unit, CIBER of Respiratory Diseases, Instituto Carlos III, CIBERES, Hospital Universitario de Burgos, Burgos, Spain
| | - Lei Huang
- 3 Center for Research Informatics, The University of Chicago, Chicago, Illinois; and
| | - Jorge Andrade
- 3 Center for Research Informatics, The University of Chicago, Chicago, Illinois; and
| | - David Gozal
- 1 Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, and
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Díaz-Coránguez M, Ramos C, Antonetti DA. The inner blood-retinal barrier: Cellular basis and development. Vision Res 2017; 139:123-137. [PMID: 28619516 DOI: 10.1016/j.visres.2017.05.009] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/26/2017] [Accepted: 05/30/2017] [Indexed: 01/01/2023]
Abstract
The blood-retinal barrier (BRB) regulates transport across retinal capillaries maintaining proper neural homeostasis and protecting the neural tissue from potential blood borne toxicity. Loss of the BRB contributes to the pathophysiology of a number of blinding retinal diseases including diabetic retinopathy. In this review, we address the basis of the BRB, including the molecular mechanisms that regulate flux across the retinal vascular bed. The routes of transcellular and paracellular flux are described as well as alterations in these pathways in response to permeabilizing agents in diabetes. Finally, we provide information on exciting new studies that help to elucidate the process of BRB development or barriergenesis and how understanding this process may lead to new opportunities for barrier restoration in diabetic retinopathy.
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Affiliation(s)
- Mónica Díaz-Coránguez
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, MI, United States
| | - Carla Ramos
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, MI, United States
| | - David A Antonetti
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, MI, United States.
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Nezu M, Souma T, Yu L, Sekine H, Takahashi N, Wei AZS, Ito S, Fukamizu A, Zsengeller ZK, Nakamura T, Hozawa A, Karumanchi SA, Suzuki N, Yamamoto M. Nrf2 inactivation enhances placental angiogenesis in a preeclampsia mouse model and improves maternal and fetal outcomes. Sci Signal 2017; 10:10/479/eaam5711. [DOI: 10.1126/scisignal.aam5711] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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The Transcription Factor Nrf2 Protects Angiogenic Capacity of Endothelial Colony-Forming Cells in High-Oxygen Radical Stress Conditions. Stem Cells Int 2017; 2017:4680612. [PMID: 28607561 PMCID: PMC5451769 DOI: 10.1155/2017/4680612] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 03/02/2017] [Accepted: 04/16/2017] [Indexed: 02/07/2023] Open
Abstract
Background Endothelial colony forming cells (ECFCs) have shown a promise in tissue engineering of vascular constructs, where they act as endothelial progenitor cells. After implantation, ECFCs are likely to be subjected to elevated reactive oxygen species (ROS). The transcription factor Nrf2 regulates the expression of antioxidant enzymes in response to ROS. Methods Stable knockdown of Nrf2 and Keap1 was achieved by transduction with lentiviral shRNAs; activation of Nrf2 was induced by incubation with sulforaphane (SFN). Expression of Nrf2 target genes was assessed by qPCR, oxidative stress was assessed using CM-DCFDA, and angiogenesis was quantified by scratch-wound and tubule-formation assays Results. Nrf2 knockdown led to a reduction of antioxidant gene expression and increased ROS. Angiogenesis was disturbed after Nrf2 knockdown even in the absence of ROS. Conversely, angiogenesis was preserved in high ROS conditions after knockdown of Keap1. Preincubation of ECFCs with SFN reduced intracellular ROS in the presence of H2O2 and preserved scratch-wound closure and tubule-formation. Results Nrf2 knockdown led to a reduction of antioxidant gene expression and increased ROS. Angiogenesis was disturbed after Nrf2 knockdown even in the absence of ROS. Conversely, angiogenesis was preserved in high ROS conditions after knockdown of Keap1. Preincubation of ECFCs with SFN reduced intracellular ROS in the presence of H2O2 and preserved scratch-wound closure and tubule-formation. Conclusion The results of this study indicate that Nrf2 plays an important role in the angiogenic capacity of ECFCs, particularly under conditions of increased oxidative stress. Pretreatment of ECFCs with SFN prior to implantation may be a protective strategy for tissue-engineered constructs or cell therapies.
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Jakobs P, Serbulea V, Leitinger N, Eckers A, Haendeler J. Nuclear Factor (Erythroid-Derived 2)-Like 2 and Thioredoxin-1 in Atherosclerosis and Ischemia/Reperfusion Injury in the Heart. Antioxid Redox Signal 2017; 26:630-644. [PMID: 27923281 PMCID: PMC5397216 DOI: 10.1089/ars.2016.6795] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 11/08/2016] [Accepted: 12/05/2016] [Indexed: 01/04/2023]
Abstract
SIGNIFICANCE Redox signaling is one of the key elements involved in cardiovascular diseases. Two important molecules are the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) and the oxidoreductase thioredoxin-1 (Trx-1). Recent Advances: During the previous years, a lot of studies investigated Nrf2 and Trx-1 as protective proteins in cardiovascular disorders. Moreover, post-translational modifications of those molecules were identified that play an important role in the cardiovascular system. This review will summarize changes in the vasculature in atherosclerosis and ischemia reperfusion injury of the heart and the newest findings achieved with Nrf2 and Trx-1 therein. Interestingly, Nrf2 and Trx-1 can act together as well as independently of each other in protection against atherosclerosis and ischemia and reperfusion injury. CRITICAL ISSUES In principle, pharmacological activation of a transcription factor-like Nrf2 can be dangerous, since a transcription regulator has multiple targets and the pleiotropic effects of such activation should not be ignored. Moreover, overactivation of Nrf2 as well as long-term treatment with Trx-1 could be deleterious for the cardiovascular system. FUTURE DIRECTIONS Therefore, the length of treatment with Nrf2 activators and/or Trx-1 has first to be studied in more detail in cardiovascular disorders. Moreover, a combination of Nrf2 activators and Trx-1 should be investigated and taken into consideration. Antioxid. Redox Signal. 26, 630-644.
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Affiliation(s)
- Philipp Jakobs
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Vlad Serbulea
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia
| | - Norbert Leitinger
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia
- Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia
| | - Anna Eckers
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Judith Haendeler
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
- Central Institute of Clinical Chemistry and Laboratory Medicine, Medical Faculty, University of Duesseldorf, Duesseldorf, Germany
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