1
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Mariën V, Arckens L, Van Houcke J. A Robust and Reproducible Method to Study Neurorepair after Stab Injury in the African Turquoise Killifish Telencephalon. Cold Spring Harb Protoc 2024; 2024:107809. [PMID: 36921997 DOI: 10.1101/pdb.prot107809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
The aging population (people >60 yr old) is steadily increasing worldwide, resulting in an increased prevalence of age-related neurodegenerative diseases. Despite intensive research efforts in the past decades, there are still no therapies available to stop, cure, or prevent these diseases. Induction of successful neuroregeneration (i.e., the production of new neurons that can functionally integrate into the existing neural circuitry) could represent a therapy to replace neurons lost by injury or disease in the aged central nervous system. The African turquoise killifish, with its particularly short life span, has emerged as a useful model to study how aging influences neuroregeneration. Here, we describe a robust and reproducible stab-injury protocol to study regeneration in the telencephalon of the African turquoise killifish. After the injury, newborn cells are traced by conducting a BrdU pulse-chase experiment. To identify newborn neurons, a double immunohistochemical staining for BrdU and HuCD is carried out. Techniques such as bromodeoxyuridine (BrdU) labeling, intracardial perfusion, cryosectioning, and immunofluorescence staining are described as separate sections.
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Affiliation(s)
- Valerie Mariën
- Neuroplasticity and Neuroproteomics Research Group, Animal Physiology and Neurobiology Section, Department of Biology, KU Leuven, 3000, Leuven, Belgium
| | - Lutgarde Arckens
- Neuroplasticity and Neuroproteomics Research Group, Animal Physiology and Neurobiology Section, Department of Biology, KU Leuven, 3000, Leuven, Belgium
| | - Jolien Van Houcke
- Neuroplasticity and Neuroproteomics Research Group, Animal Physiology and Neurobiology Section, Department of Biology, KU Leuven, 3000, Leuven, Belgium
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2
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Endo M, Gotoh M, Nakashima M, Kawamoto Y, Sakai S, Murakami-Murofushi K, Hashimoto K, Miyamoto Y. 2-Carba cyclic phosphatidic acid regulates blood coagulation and fibrinolysis system for repair after brain injury. Brain Res 2023; 1818:148511. [PMID: 37506965 DOI: 10.1016/j.brainres.2023.148511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023]
Abstract
Effective blood coagulation prevents inflammation and neuronal loss after brain injury. 2-Carba-cyclic phosphatidic acid (2ccPA), a biotherapeutic for brain injury, inhibits blood extravasation resulting from blood-brain barrier breakdown. However, the hemostasis mechanism of 2ccPA remains unclear. We determined the effects of 2ccPA-injection on blood coagulation and fibrinolysis using a needle-induced brain injury model. 2ccPA suppressed the expression of platelet degranulation-related genes. Immediately after brain injury, 2ccPA increased CD41+ platelet aggregation around the lesions and promoted fibrin aggregation. Additionally, 2ccPA supported fibrinolysis by upregulating plasminogen activator expression. These results suggest the acute effects of 2ccPA on brain hemostasis.
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Affiliation(s)
- Misaki Endo
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Mari Gotoh
- Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Mari Nakashima
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Yuka Kawamoto
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Shiho Sakai
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | | | - Kei Hashimoto
- Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Academic Production, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan.
| | - Yasunori Miyamoto
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan.
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3
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Nagata W, Gotoh M, Koizumi A, Fukasawa K, Nakagawa K, Satoh Y, Ishizuka T. Two-carba cyclic phosphatidic acid treatment promotes phenotypic switch from M1 to M2 microglia and prevents behavioral abnormalities in a mouse model of neuropsychiatric systemic lupus erythematosus. Hum Cell 2023; 36:2006-2015. [PMID: 37540445 DOI: 10.1007/s13577-023-00964-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/27/2023] [Indexed: 08/05/2023]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease associated with the production of double-stranded DNA (dsDNA) antibodies and other antibodies that predominantly affects women with a wide range of lesions. Although neuropsychiatric lupus erythematosus (NPSLE), characterized by neuropsychiatric symptoms related to cerebrovascular diseases or depression, ranks high in severity, no specific treatment has been defined. Two-carba cyclic phosphatidic acid (2ccPA), a derivative of cyclic phosphatidic acid, was isolated from the true slime mold Physarum polycephalum in 1992. 2ccPA treatment suppresses neuroinflammation and promotes tissue repair in mouse multiple sclerosis and traumatic brain injury models. In this study, we performed behavioral tests on MRL/lpr mice as an NPSLE model. MRL/lpr mice showed increased depression-like behaviors compared with control mice, which were significantly suppressed by 2ccPA treatment. The expression of CD68, an M1 phenotypic marker of microglia, was significantly elevated in the prefrontal cortex and hippocampus of MRL/lpr mice, which was significantly suppressed by 2ccPA treatment. In contrast, the expression of Arginase1, an M2 phenotypic marker of microglia, was significantly increased by 2ccPA treatment. Compared to control mice, MRL/lpr mice showed higher plasma levels of anti-dsDNA antibodies, which are mainly involved in SLE pathogenesis. 2ccPA treatment decreased these levels in the MRL/lpr mice. These results suggest that 2ccPA treatment suppresses behavioral abnormalities by promoting a microglial phenotypic switch from M1 to M2 in MRL/lpr mice.
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Affiliation(s)
- Wataru Nagata
- Department of Pharmacology, National Defense Medical College, 3-2, Namiki, Tokorozawa, Saitama, 359-0042, Japan
| | - Mari Gotoh
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Itabashi, Tokyo, Japan
- Institute for Human Life Science, Ochanomizu University, Ohtsuka, Tokyo, Japan
| | - Akiho Koizumi
- Department of Pharmacology, National Defense Medical College, 3-2, Namiki, Tokorozawa, Saitama, 359-0042, Japan
| | - Keiko Fukasawa
- Ochadai Academic Production, Ochanomizu University, Ohtsuka, Tokyo, Japan
- Juntendo Advanced Research Institute for Health Science, Juntendo University, Hongo, Tokyo, Japan
| | - Keiichi Nakagawa
- Department of Pharmacology, National Defense Medical College, 3-2, Namiki, Tokorozawa, Saitama, 359-0042, Japan
| | - Yasushi Satoh
- Department of Biochemistry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Toshiaki Ishizuka
- Department of Pharmacology, National Defense Medical College, 3-2, Namiki, Tokorozawa, Saitama, 359-0042, Japan.
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4
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Takei R, Nakashima M, Gotoh M, Endo M, Hashimoto K, Miyamoto Y, Murakami-Murofushi K. 2-carba-cyclic phosphatidic acid modulates astrocyte-to-microglia communication and influences microglial polarization towards an anti-inflammatory phenotype. Neurosci Lett 2023; 797:137063. [PMID: 36634888 DOI: 10.1016/j.neulet.2023.137063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 01/08/2023] [Indexed: 01/11/2023]
Abstract
2-carba-cyclic phosphatidic acid (2ccPA) suppresses microglial and astrocyte inflammation for neuronal survival following traumatic brain injury. However, it remains unknown how 2ccPA regulates microglial activation. In this study, to elucidate the 2ccPA behavior in glial communication, we collected the astrocyte conditioned media (ACM) from primary astrocyte cultures that were treated by lipopolysaccharide (LPS) and 2ccPA and analyzed the alteration of microglial inflammation caused by the ACM treatment. The addition of the ACM derived from LPS- and 2ccPA-double treated astrocytes to microglia decreased the CD86+ pro-inflammatory M1 microglia, which were upregulated with the ACM collected from astrocytes treated by LPS without 2ccPA, while the direct addition of LPS and 2ccPA to microglia failed to decrease the CD86+ microglia to the basal level. We confirmed that the ACM from LPS- and 2ccPA-treated astrocytes increased the ratio of CD206+ anti-inflammatory M2 microglia to total microglia, whereas direct treatment of microglia with LPS and 2ccPA had no effect on the CD206+ microglia ratio, demonstrating the importance of astrocyte intervention in microglial polarization. In addition, we examined whether astrocytes modulate the 2ccPA-regulated proinflammatory cytokine production derived from microglia. The addition of the ACM from LPS- and 2ccPA-treated astrocytes to microglia remarkably canceled the LPS-induced upregulation of IL-1β, IL-6, and TNF-α secreted from microglia, while the direct addition of LPS and 2ccPA to microglia showed no affect. Therefore, our results indicate that astrocytes mediate the 2ccPA function to shift microglia towards the M2 phenotype by interfering with the polarization of M1 microglia and to suppress cytokine production.
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Affiliation(s)
- Rino Takei
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Mari Nakashima
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Mari Gotoh
- Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Department of Clinical Laboratory Medicine, Faculty of Medical Technology, Teikyo University, Kage, Itabashi-ku, Tokyo, Japan
| | - Misaki Endo
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Kei Hashimoto
- Academic Production, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan
| | - Yasunori Miyamoto
- Graduate School of Humanities and Sciences, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Institute for Human Life Science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan; Research division of human welfare science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan.
| | - Kimiko Murakami-Murofushi
- Research division of human welfare science, Ochanomizu University, Ohtsuka, Bunkyo-ku, Tokyo, Japan.
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5
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Gotoh M, Miyamoto Y, Ikeshima-Kataoka H. Astrocytic Neuroimmunological Roles Interacting with Microglial Cells in Neurodegenerative Diseases. Int J Mol Sci 2023; 24:ijms24021599. [PMID: 36675113 PMCID: PMC9865248 DOI: 10.3390/ijms24021599] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Both astrocytic and microglial functions have been extensively investigated in healthy subjects and neurodegenerative diseases. For astrocytes, not only various sub-types were identified but phagocytic activity was also clarified recently and is making dramatic progress. In this review paper, we mostly focus on the functional role of astrocytes in the extracellular matrix and on interactions between reactive astrocytes and reactive microglia in normal states and in neurodegenerative diseases, because the authors feel it is necessary to elucidate the mechanisms among activated glial cells in the pathology of neurological diseases in order to pave the way for drug discovery. Finally, we will review cyclic phosphatidic acid (cPA), a naturally occurring phospholipid mediator that induces a variety of biological activities in the brain both in vivo and in vitro. We propose that cPA may serve as a novel therapeutic molecule for the treatment of brain injury and neuroinflammation.
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Affiliation(s)
- Mari Gotoh
- Department of Clinical Laboratory Medicine, Faculty of Medical Technology, Teikyo University, 2-11-1, Itabashi-ku, Tokyo 173-8605, Japan
- Institute for Human Life Science, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Yasunori Miyamoto
- Institute for Human Life Science, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Hiroko Ikeshima-Kataoka
- Department of Biology, Keio University, 4-1-1, Hiyoshi, Kohoku-ku, Yokohama 223-8521, Japan
- Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
- Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Correspondence:
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6
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Labombarda F, Bellini M. Brain and spinal cord trauma: what we know about the therapeutic potential of insulin growth factor 1 gene therapy. Neural Regen Res 2023; 18:253-257. [PMID: 35900399 PMCID: PMC9396494 DOI: 10.4103/1673-5374.343902] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Although little attention has been paid to cognitive and emotional dysfunctions observed in patients after spinal cord injury, several reports have described impairments in cognitive abilities. Our group also has contributed significantly to the study of cognitive impairments in a rat model of spinal cord injury. These findings are very significant because they demonstrate that cognitive and mood deficits are not induced by lifestyle changes, drugs of abuse, and combined medication. They are related to changes in brain structures involved in cognition and emotion, such as the hippocampus. Chronic spinal cord injury decreases neurogenesis, enhances glial reactivity leading to hippocampal neuroinflammation, and triggers cognitive deficits. These brain distal abnormalities are recently called tertiary damage. Given that there is no treatment for Tertiary Damage, insulin growth factor 1 gene therapy emerges as a good candidate. Insulin growth factor 1 gene therapy recovers neurogenesis and induces the polarization from pro-inflammatory towards anti-inflammatory microglial phenotypes, which represents a potential strategy to treat the neuroinflammation that supports tertiary damage. Insulin growth factor 1 gene therapy can be extended to other central nervous system pathologies such as traumatic brain injury where the neuroinflammatory component is crucial. Insulin growth factor 1 gene therapy could emerge as a new therapeutic strategy for treating traumatic brain injury and spinal cord injury.
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7
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Cao LX, Lin SJ, Zhao SS, Wang SQ, Zeng H, Chen WA, Lin ZW, Chen JX, Zhu MM, Zhang YM. Effects of acupuncture on microglial polarization and the TLR4/TRIF/MyD88 pathway in a rat model of traumatic brain injury. Acupunct Med 2022:9645284221108214. [PMID: 36046956 DOI: 10.1177/09645284221108214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Neuroinflammation caused by traumatic brain injury (TBI) can lead to neurological deficits. Acupuncture can inhibit neuroinflammation and promote nerve repair; however, the specific mechanism is still unclear. The purpose of this study was to explore whether acupuncture could modulate the M1 and M2 phenotypic polarization of microglia in a rat model of TBI via the toll-like receptor 4 (TLR4)/intracellular toll-interleukin-1 receptor (TIR) domain-containing adaptor inducing interferon-β (TRIF)/myeloid differentiation factor 88 (MyD88) pathway. METHODS A total of 90 adult male Sprague-Dawley (SD) rats, SPF grade, were randomly divided into a normal group, model group and acupuncture group. Each group was further divided into three subgroups (first, third, and fifth day groups) according to the treatment time (n = 10 rats/subgroup). We used the modified neurological severity score (mNSS) method to quantify neurological deficits before and after modeling. We used Nissl staining to observe the pathological changes in brain tissue, flow cytometry to detect the proportion of M1 and M2 polarized microglia in the injured area on the first, third and fifth day, and co-immunoprecipitation (Co-IP) to examine TLR4/TRIF/MyD88 expression in microglia on the first, third and fifth day, as well as expression of the amount of binding of TLR4 with TRIF and MyD88. RESULTS Compared to the model group, mNSS in the acupuncture group gradually decreased and pathological morphology improved. The proportion of CD11b/CD86 positive cells was decreased, while that of CD11b/CD206 was increased in the acupuncture group. Expression of IP TLR4, IP TRIF and IP MyD88 also decreased in the acupuncture group. CONCLUSION The results of this study demonstrate that one of the mechanisms through which acupuncture mitigates neuroinflammation and promotes nerve repair in TBI rats may be inhibition of M1 phenotypic polarization and promotion of M2 phenotypic polarization through inhibition of the TLR4/TRIF/MyD88 signaling pathway.
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Affiliation(s)
- Lu-Xi Cao
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China.,Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Shu-Jun Lin
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China.,Clinical Medical College of Acupuncture, Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Si-Si Zhao
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Shi-Qi Wang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Hai Zeng
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Wen-An Chen
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Zhuo-Wen Lin
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Jia-Xu Chen
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China.,Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Ming-Min Zhu
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
| | - Yi-Min Zhang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, China
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8
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Liu Q, Zhou S, Wang X, Gu C, Guo Q, Li X, Zhang C, Zhang N, Zhang L, Huang F. Apelin alleviated neuroinflammation and promoted endogenous neural stem cell proliferation and differentiation after spinal cord injury in rats. J Neuroinflammation 2022; 19:160. [PMID: 35725619 PMCID: PMC9208139 DOI: 10.1186/s12974-022-02518-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 06/05/2022] [Indexed: 12/14/2022] Open
Abstract
Background Spinal cord injury (SCI) causes devastating neurological damage, including secondary injuries dominated by neuroinflammation. The role of Apelin, an endogenous ligand that binds the G protein-coupled receptor angiotensin-like receptor 1, in SCI remains unclear. Thus, our aim was to investigate the effects of Apelin in inflammatory responses and activation of endogenous neural stem cells (NSCs) after SCI. Methods Apelin expression was detected in normal and injured rats, and roles of Apelin in primary NSCs were examined. In addition, we used induced pluripotent stem cells (iPSCs) as a carrier to prolong the effective duration of Apelin and evaluate its effects in a rat model of SCI. Results Co-immunofluorescence staining suggested that Apelin was expressed in both astrocytes, neurons and microglia. Following SCI, Apelin expression decreased from 1 to 14 d and re-upregulated at 28 d. In vitro, Apelin promoted NSCs proliferation and differentiation into neurons. In vivo, lentiviral-transfected iPSCs were used as a carrier to prolong the effective duration of Apelin. Transplantation of transfected iPSCs in situ immediately after SCI reduced polarization of M1 microglia and A1 astrocytes, facilitated recovery of motor function, and promoted the proliferation and differentiation of endogenous NSCs in rats. Conclusion Apelin alleviated neuroinflammation and promoted the proliferation and differentiation of endogenous NSCs after SCI, suggesting that it might be a promising target for treatment of SCI.
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Affiliation(s)
- Qing Liu
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Shuai Zhou
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Xiao Wang
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Chengxu Gu
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Qixuan Guo
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Xikai Li
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Chunlei Zhang
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Naili Zhang
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China
| | - Luping Zhang
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China.
| | - Fei Huang
- Institute of Neurobiology, Binzhou Medical University, 346 Guanhai Road, Laishan, 264003, Shandong, China. .,School of Health and Life Sciences, University of Health and Rehabilitation Sciences, 17 Shandong Road, Qingdao, 266071, China.
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9
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Li W, Cao F, Takase H, Arai K, Lo EH, Lok J. Blood-Brain Barrier Mechanisms in Stroke and Trauma. Handb Exp Pharmacol 2022; 273:267-293. [PMID: 33580391 DOI: 10.1007/164_2020_426] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The brain microenvironment is tightly regulated. The blood-brain barrier (BBB), which is composed of cerebral endothelial cells, astrocytes, and pericytes, plays an important role in maintaining the brain homeostasis by regulating the transport of both beneficial and detrimental substances between circulating blood and brain parenchyma. After brain injury and disease, BBB tightness becomes dysregulated, thus leading to inflammation and secondary brain damage. In this chapter, we overview the fundamental mechanisms of BBB damage and repair after stroke and traumatic brain injury (TBI). Understanding these mechanisms may lead to therapeutic opportunities for brain injury.
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Affiliation(s)
- Wenlu Li
- Neuroprotection Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Fang Cao
- Neuroprotection Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Hajime Takase
- Neuroprotection Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Ken Arai
- Neuroprotection Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Eng H Lo
- Neuroprotection Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Josephine Lok
- Neuroprotection Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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10
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The neuroprotective function of 2-carba-cyclic phosphatidic acid: Implications for tenascin-C via astrocytes in traumatic brain injury. J Neuroimmunol 2021; 361:577749. [PMID: 34688067 DOI: 10.1016/j.jneuroim.2021.577749] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 09/30/2021] [Accepted: 10/07/2021] [Indexed: 02/06/2023]
Abstract
We examined the mechanism how 2-carba-cyclic phosphatidic acid (2ccPA), a lipid mediator, regulates neuronal apoptosis in traumatic brain injury (TBI). First, we found 2ccPA suppressed neuronal apoptosis after the injury, and increased the immunoreactivity of tenascin-C (TN-C), an extracellular matrix protein by 2ccPA in the vicinity of the wound region. 2ccPA increased the mRNA expression levels of Tnc in primary cultured astrocytes, and the conditioned medium of 2ccPA-treated astrocytes suppressed the apoptosis of cortical neurons. The neuroprotective effect of TN-C was abolished by knockdown of TN-C. These results indicate that 2ccPA contributes to neuroprotection via TN-C from astrocytes in TBI.
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11
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Hu Y, Tao W. Microenvironmental Variations After Blood-Brain Barrier Breakdown in Traumatic Brain Injury. Front Mol Neurosci 2021; 14:750810. [PMID: 34899180 PMCID: PMC8662751 DOI: 10.3389/fnmol.2021.750810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/18/2021] [Indexed: 12/12/2022] Open
Abstract
Traumatic brain injury (TBI) is linked to several pathologies. The blood-brain barrier (BBB) breakdown is considered to be one of the initial changes. Further, the microenvironmental alteration following TBI-induced BBB breakdown can be multi-scaled, constant, and dramatic. The microenvironmental variations after disruption of BBB includes several pathological changes, such as cerebral blood flow (CBF) alteration, brain edema, cerebral metabolism imbalances, and accumulation of inflammatory molecules. The modulation of the microenvironment presents attractive targets for TBI recovery, such as reducing toxic substances, inhibiting inflammation, and promoting neurogenesis. Herein, we briefly review the pathological alterations of the microenvironmental changes following BBB breakdown and outline potential interventions for TBI recovery based on microenvironmental modulation.
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Affiliation(s)
- Yue Hu
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Weiwei Tao
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
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12
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Van houcke J, Mariën V, Zandecki C, Vanhunsel S, Moons L, Ayana R, Seuntjens E, Arckens L. Aging impairs the essential contributions of non-glial progenitors to neurorepair in the dorsal telencephalon of the Killifish Nothobranchius furzeri. Aging Cell 2021; 20:e13464. [PMID: 34428340 PMCID: PMC8441397 DOI: 10.1111/acel.13464] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/30/2021] [Accepted: 08/07/2021] [Indexed: 12/13/2022] Open
Abstract
The aging central nervous system (CNS) of mammals displays progressive limited regenerative abilities. Recovery after loss of neurons is extremely restricted in the aged brain. Many research models fall short in recapitulating mammalian aging hallmarks or have an impractically long lifespan. We established a traumatic brain injury model in the African turquoise killifish (Nothobranchius furzeri), a regeneration‐competent vertebrate that evolved to naturally age extremely fast. Stab‐wound injury of the aged killifish dorsal telencephalon unveils an impaired and incomplete regeneration response when compared to young individuals. In the young adult killifish, brain regeneration is mainly supported by atypical non‐glial progenitors, yet their proliferation capacity clearly declines with age. We identified a high inflammatory response and glial scarring to also underlie the hampered generation of new neurons in aged fish. These primary results will pave the way to unravel the factor age in relation to neurorepair, and to improve therapeutic strategies to restore the injured and/or diseased aged mammalian CNS.
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Affiliation(s)
- Jolien Van houcke
- Department of Biology Laboratory of Neuroplasticity and Neuroproteomics KU Leuven Leuven Belgium
| | - Valerie Mariën
- Department of Biology Laboratory of Neuroplasticity and Neuroproteomics KU Leuven Leuven Belgium
| | - Caroline Zandecki
- Department of Biology Laboratory of Neuroplasticity and Neuroproteomics KU Leuven Leuven Belgium
- Department of Biology Laboratory of Developmental Neurobiology KU Leuven Leuven Belgium
| | - Sophie Vanhunsel
- Department of Biology Laboratory of Neural Circuit Development and Regeneration KU Leuven Leuven Belgium
| | - Lieve Moons
- Department of Biology Laboratory of Neural Circuit Development and Regeneration KU Leuven Leuven Belgium
- KU Leuven Brain Institute Leuven Belgium
| | - Rajagopal Ayana
- Department of Biology Laboratory of Neuroplasticity and Neuroproteomics KU Leuven Leuven Belgium
- Department of Biology Laboratory of Developmental Neurobiology KU Leuven Leuven Belgium
| | - Eve Seuntjens
- Department of Biology Laboratory of Developmental Neurobiology KU Leuven Leuven Belgium
- KU Leuven Brain Institute Leuven Belgium
| | - Lutgarde Arckens
- Department of Biology Laboratory of Neuroplasticity and Neuroproteomics KU Leuven Leuven Belgium
- KU Leuven Brain Institute Leuven Belgium
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13
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Tsukahara T, Sahara Y, Ribeiro N, Tsukahara R, Gotoh M, Sakamoto S, Handa H, Murakami-Murofushi K. Adenine nucleotide translocase 2, a putative target protein for 2-carba cyclic phosphatidic acid in microglial cells. Cell Signal 2021; 82:109951. [PMID: 33592249 DOI: 10.1016/j.cellsig.2021.109951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/12/2021] [Accepted: 01/30/2021] [Indexed: 11/28/2022]
Abstract
Lipid-protein interactions play essential roles in many biological phenomena. Lysophospholipid mediators, such as cyclic phosphatidic acid (cPA), have been recognized as secondary messengers, yet few cellular targets for cPA have been identified to date. Furthermore, the molecular mechanism that activates these downstream signaling events remains unknown. In this study, using metabolically stabilized cPA carba-derivative (2ccPA)-immobilized magnetic beads, we identified adenine nucleotide translocase 2 (ANT2) as a 2ccPA-interacting protein in microglial cells. 2ccPA was tested for its ability to inhibit apoptosis caused by phenylarsine oxide in microglial cells. This damage was significantly improved upon 2ccPA treatment, along with cell proliferation, apoptosis, reactive oxygen species production, and intracellular ATP levels. This is the first report to suggest the direct binding of 2ccPA to ANT2 in microglial cells and provides evidence for a new benefit of 2ccPA in protecting microglial cells from apoptotic death induced by the ANT2-mediated signaling pathway.
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Affiliation(s)
- Tamotsu Tsukahara
- Department of Pharmacology and Therapeutic Innovation, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Yasuka Sahara
- Department of Pharmacology and Therapeutic Innovation, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | | | - Ryoko Tsukahara
- Ochadai Academic Production, Ochanomizu University, Tokyo, Japan
| | - Mari Gotoh
- Institute for Human Life Innovation, Ochanomizu University, Tokyo, Japan
| | - Satoshi Sakamoto
- School of Life Science and Technology, Tokyo Institute of Technology, Kanagawa, Japan
| | - Hiroshi Handa
- Department of Chemical Biology, Tokyo Medical University, Tokyo, Japan
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14
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Wood PL, Muir W, Christmann U, Gibbons P, Hancock CL, Poole CM, Emery AL, Poovey JR, Hagg C, Scarborough JH, Christopher JS, Dixon AT, Craney DJ. Lipidomics of the chicken egg yolk: high-resolution mass spectrometric characterization of nutritional lipid families. Poult Sci 2021; 100:887-899. [PMID: 33518142 PMCID: PMC7858096 DOI: 10.1016/j.psj.2020.11.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 10/26/2020] [Accepted: 11/09/2020] [Indexed: 02/06/2023] Open
Abstract
While previous studies have characterized the fatty acids and global lipid families of the chicken egg yolk, there have been no publications characterizing the individual lipids in these lipid families. Such an in-depth characterization of egg yolk lipids is essential to define the potential benefits of egg yolk consumption for the supply of structural and anti-inflammatory lipids. Historically, the major focus has been on the cholesterol content of eggs and the potential negative health benefits of this lipid, while ignoring the essential roles of cholesterol in membranes and as a precursor to other essential sterols. A detailed analysis of egg yolk lipids, using high-resolution mass spectrometric analyses and tandem mass spectrometry to characterize the fatty acid substituents of complex structural lipids, was used to generate the first in-depth characterization of individual lipids within lipid families. Egg yolks were isolated from commercial eggs (Full Circle Market) and lipids extracted with methyl-t-butylether before analyses via high-resolution mass spectrometry. This analytical platform demonstrates that chicken egg yolks provide a rich nutritional source of complex structural lipids required for lipid homeostasis. These include dominant glycerophosphocholines (GPC) (34:2 and 36:2), plasmalogen GPC (34:1, 36:1), glycerophosphoethanolamines (GPE) 38:4 and 36:2), plasmalogen GPE (36:2 and 34:1), glycerophosphoserines (36:2 and 38:4), glycerophosphoinositols (38:4), glycerophosphoglycerols (36:2), N-acylphosphatidylethanolamines (NAPE) (56:6), plasmalogen NAPE (54:4 and 56:6), sphingomyelins (16:0), ceramides (22:0 and 24:0), cyclic phosphatidic acids (16:0 and 18:0), monoacylglycerols (18:1 and 18:2), diacylglycerols (36:3 and 36:2), and triacylglycerols (52:3). Our data indicate that the egg yolk is a rich source of structural and energy-rich lipids. In addition, the structural lipids possess ω-3 and ω-6 fatty acids that are essential precursors of endogenous anti-inflammatory lipid mediators. These data indicate that eggs are a valuable nutritional addition to the diets of individuals that do not have cholesterol issues.
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Affiliation(s)
- Paul L Wood
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA.
| | - William Muir
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Undine Christmann
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Philippa Gibbons
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Courtney L Hancock
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Cathleen M Poole
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Audrey L Emery
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Jesse R Poovey
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Casey Hagg
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Jon H Scarborough
- DeBusk College of Osteopathic Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Jordon S Christopher
- DeBusk College of Osteopathic Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Alexander T Dixon
- DeBusk College of Osteopathic Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
| | - Dustin J Craney
- DeBusk College of Osteopathic Medicine, Lincoln Memorial University, Harrogate, TN 37752, USA
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15
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Yu L, Su X, Li S, Zhao F, Mu D, Qu Y. Microglia and Their Promising Role in Ischemic Brain Injuries: An Update. Front Cell Neurosci 2020; 14:211. [PMID: 32754016 PMCID: PMC7365911 DOI: 10.3389/fncel.2020.00211] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/16/2020] [Indexed: 12/14/2022] Open
Abstract
Ischemic brain injuries are common diseases with high morbidity, disability, and mortality rates, which have significant impacts on human health and life. Microglia are resident cells of the central nervous system (CNS). The inflammatory responses mediated by microglia play an important role in the occurrence and development of ischemic brain injuries. This article summarizes the activation, polarization, depletion, and repopulation of microglia after ischemic brain injuries, proposing new treatment strategies for such injuries through the modulation of microglial function.
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Affiliation(s)
- Luting Yu
- Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Xiaojuan Su
- Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Shiping Li
- Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Fengyan Zhao
- Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Dezhi Mu
- Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Yi Qu
- Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
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16
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Shimizu Y, Fukasawa K, Yamamoto S, Shibaike Y, Tsukahara R, Ishikawa M, Iwasa K, Yoshikawa K, Gotoh M, Murakami-Murofushi K. Evaluation of the pharmacokinetics of 2-carba-cyclic phosphatidic acid by liquid chromatography-triple quadrupole mass spectrometry. Prostaglandins Other Lipid Mediat 2020; 150:106450. [PMID: 32298781 DOI: 10.1016/j.prostaglandins.2020.106450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 03/04/2020] [Accepted: 03/31/2020] [Indexed: 01/24/2023]
Abstract
Cyclic phosphatidic acid (cPA) is a lysophospholipid mediator that suppresses cancer metastasis and osteoarthritis. It also has neuroprotective roles in diseases such as multiple sclerosis and delayed neuronal death following transient ischemia. In order to take advantage of the properties of cPA for the development of new therapeutic strategies, we have synthesized several cPA derivatives and discovered 2-carba-cPA (2ccPA) as a promising candidate. To develop 2ccPA as a therapeutic agent, we investigated the pharmacokinetic profile of 2ccPA by liquid chromatography-triple quadrupole mass spectrometry in this study. When 2ccPA was administered intraperitoneally to mice at a dose of 1.6 mg/kg, the half-life of 2ccPA in plasma was 16 min. The 2ccPA, dosed intraperitoneally to mice at 16 mg/kg, distributed to each organ including brain at 20 min after dosing. It was found that 2ccPA was stable in neutral or alkaline conditions (e.g., intestine) but unstable in acidic conditions (e.g., stomach). When 2ccPA was orally administrated to rats as a gastro-resistant form using an enterosoluble capsule, plasma 2ccPA levels peaked at 2 h, slowly declined thereafter and persistently detected even at 10 h after administration. Here, we present the findings on the effect of the continuous release of 2ccPA from the capsule to reduce the lysophospholipase D activity and also decrease plasma levels of lysophosphatidic acid in rat. These findings will be useful in further studies for evaluating the application of 2ccPA in several disorders.
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Affiliation(s)
| | - Keiko Fukasawa
- Ochadai Academic Production, Ochanomizu University, Tokyo, Japan
| | - Shinji Yamamoto
- Department of Pharmacology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Yuki Shibaike
- Institute for Human Life Innovation, Ochanomizu University, Tokyo, Japan; Research Organization for the Promotion of Global Women's Leadership, Ochanomizu University, Tokyo, Japan
| | - Ryoko Tsukahara
- Ochadai Academic Production, Ochanomizu University, Tokyo, Japan
| | - Masaki Ishikawa
- Department of Pharmacology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Kensuke Iwasa
- Department of Pharmacology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Keisuke Yoshikawa
- Department of Pharmacology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
| | - Mari Gotoh
- Ochadai Academic Production, Ochanomizu University, Tokyo, Japan; Institute for Human Life Innovation, Ochanomizu University, Tokyo, Japan.
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17
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Shibaike Y, Gotoh M, Ogawa C, Nakajima S, Yoshikawa K, Kobayashi T, Murakami-Murofushi K. 2-Carba cyclic phosphatidic acid inhibits lipopolysaccharide-induced prostaglandin E2 production in a human macrophage cell line. Biochem Biophys Rep 2019; 19:100668. [PMID: 31367683 PMCID: PMC6651843 DOI: 10.1016/j.bbrep.2019.100668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/16/2019] [Accepted: 07/16/2019] [Indexed: 12/25/2022] Open
Abstract
Cyclic phosphatidic acid (cPA) is a naturally occurring phospholipid mediator that contains a unique cyclic phosphate ring at the sn-2 and sn-3 positions of its glycerol backbone. Using mouse models for multiple sclerosis (cuprizone-induced demyelination and experimental autoimmune encephalomyelitis) and traumatic brain injury, we revealed that cPA and its metabolically stabilized cPA derivative, 2-carba-cPA (2ccPA), have potential to protect against neuroinflammation. In this study, we investigated whether 2ccPA has anti-inflammatory effect on peripheral immune function or not using inflammation-induced macrophages-like cell line, THP-1 monocytes differentiated by phorbol 12-myristate 13-acetate (PMA). Lipopolysaccharide (LPS)-stimulated THP-1 cells were found to have higher expression of the mRNAs of several inflammation-related cytokines and of the enzyme cyclooxygenase-2 (Cox-2); however, when THP-1 cells were stimulated by LPS in the presence of 2ccPA, the increase in the expression of pro-inflammatory cytokine and Cox-2 mRNA was attenuated. 2ccPA treatment also decreased the amount of prostaglandin E2 (PGE2) produced by LPS-stimulated THP-1 cells and decreased expression of the mRNA of prostaglandin E receptor 2 (EP2, PTGER2), a PGE2 receptor that mediates inflammation. These results indicate that 2ccPA has anti-inflammatory properties. 2-Carba cyclic phosphatidic acid inhibits prostaglandin E2 production. 2-Carba cyclic phosphatidic acid has anti-inflammatory effect. 2-Carba cyclic phosphatidic acid has effect on peripheral immune function.
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Affiliation(s)
- Yuki Shibaike
- Endowed Research Division of Beauty and Science, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,Research Organization for the Promotion of Global Women's Leadership, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Mari Gotoh
- Endowed Research Division of Beauty and Science, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,Institute for Human Life Innovation, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Chinatsu Ogawa
- Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Shingo Nakajima
- Endowed Research Division of Beauty and Science, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), 4-1-1, Ogawa-Higashi, Kodaira, Tokyo, Japan
| | - Keisuke Yoshikawa
- Department of Pharmacology, Faculty of Medicine, Saitama Medical University, 38 Moro-hongo, Moroyama-machi, Iruma-gun, Saitama, 350-0495, Japan
| | - Tetsuyuki Kobayashi
- Institute for Human Life Innovation, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Kimiko Murakami-Murofushi
- Endowed Research Division of Beauty and Science, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
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18
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Kong L, Yao Y, Xia Y, Liang X, Ni Y, Yang J. Osthole alleviates inflammation by down-regulating NF-κB signaling pathway in traumatic brain injury. Immunopharmacol Immunotoxicol 2019; 41:349-360. [PMID: 31056982 DOI: 10.1080/08923973.2019.1608560] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Traumatic brain injury (TBI) is a common neurotrosis disorder of the central nervous system (CNS), which has dramatic consequences on the integrity of damaged tissue. In this study, we investigated the neuroprotective effect and anti-inflammatory actions of osthole, a natural coumarin derivative, in both in vivo and in vitro TBI models. We first prepared a mouse model of cortical stab wound brain injury, investigated the capacity for osthole to prevent secondary brain injury and further examined the underlying mechanism. We revealed that osthole significantly improved the neurological function, increased the number of neurons beside injured site. Additionally, osthole treatment reduced the expression of microglia and glial scar, lowered the level of the proinflammatory cytokines interleukin (IL)-6, IL-1β, and tumor necrosis factor-α (TNF-α), and blocked the activation of nuclear factor kappa B (NF-κB). Furthermore, the protective effect of osthole was also examined in SH-SY5Y cells subjected to scratch injury. Treatment of osthole prominently suppressed cell apoptosis and inflammatory factors release by blocking injury-induced IκB-α phosphorylation and NF-κB translocation, and upregulated the IκB-α which functions in the NF-κB signaling pathway of SH-SY5Y cells. However, NF-κB signaling pathway was inhibited by pyrrolidine dithiocarbamate (PDTC), an NF-κB inhibitor, the anti-inflammatory effect of osthole was abolished. In conclusion, our findings demonstrated that osthole attenuated inflammatory response by inhibiting the NF-κB pathway in TBI.
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Affiliation(s)
- Liang Kong
- a School of Pharmacy , Liaoning University of Traditional Chinese Medicine , Dalian , China
| | - Yingjia Yao
- a School of Pharmacy , Liaoning University of Traditional Chinese Medicine , Dalian , China
| | - Yang Xia
- b Department of Engineering , University of Oxford , Oxford , UK
| | - Xicai Liang
- a School of Pharmacy , Liaoning University of Traditional Chinese Medicine , Dalian , China
| | - Yingnan Ni
- a School of Pharmacy , Liaoning University of Traditional Chinese Medicine , Dalian , China
| | - Jingxian Yang
- a School of Pharmacy , Liaoning University of Traditional Chinese Medicine , Dalian , China
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19
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Wood PL, Donohue MN, Cebak JE, Beckmann TG, Treece M, Johnson JW, Miller LMJ. Tear Film Amphiphilic and Anti-Inflammatory Lipids in Bovine Pink Eye. Metabolites 2018; 8:metabo8040081. [PMID: 30469369 PMCID: PMC6316582 DOI: 10.3390/metabo8040081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/08/2018] [Accepted: 11/16/2018] [Indexed: 12/13/2022] Open
Abstract
Background: Tear film fluid serves as a dynamic barrier that both lubricates the eye and protects against allergens and infectious agents. However, a detailed analysis of a bacteria-induced immune response on the tear film lipidome has not been undertaken. Methods: We undertook a high-resolution mass spectrometry lipidomics analysis of endogenous anti-inflammatory and structural tear film lipids in bovine pink eye. Results: Bovine pink eye resulted in dramatic elevations in tear fluid levels of the anti-inflammatory lipids resolvin E2, cyclic phosphatidic acid 16:0, and cyclic phosphatidic acid 18:0. In addition, there were elevated levels of the structural lipids (O-acyl)-ω-hydroxy-fatty acids, cholesterol sulfate, ethanolamine plasmalogens, and sphingomyelins. Lipid peroxidation also was augmented in pink eye as evidenced by the hydroperoxy derivatives of ethanolamine plasmalogens. Conclusions: Ocular infections with Moraxella bovis result in the induction of a number of endogenous anti-inflammatory lipids and augmentation of the levels of structural glycerophospholipids and sphingolipids. Increased levels of hydroperoxy glycerophospholipids also indicate that this bacterial infection results in lipid peroxidation.
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Affiliation(s)
- Paul L Wood
- Metabolomics Unit, College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
| | - Michelle N Donohue
- Metabolomics Unit, College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
| | - John E Cebak
- Metabolomics Unit, College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
- Department of Medicine, DeBusk College of Osteopathic Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
| | - Taylor G Beckmann
- Department of Medicine, DeBusk College of Osteopathic Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
| | - MacKenzie Treece
- Metabolomics Unit, College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
| | - Jason W Johnson
- College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
| | - Lynda M J Miller
- College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy, Harrogate TN 37752, UK.
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