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Jiang Y, Li X, Liu Q, Lei G, Wu C, Chen L, Zhao Y, Hu Y, Xian H, Mao R. Apolipoprotein A-I Binding Protein Inhibits the Formation of Infantile Hemangioma through Cholesterol-Regulated Hypoxia-Inducible Factor 1α Activation. J Invest Dermatol 2024; 144:645-658.e7. [PMID: 37832842 DOI: 10.1016/j.jid.2023.07.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 10/15/2023]
Abstract
Infantile hemangioma (IH) is the most frequent vascular tumor of infancy with unclear pathogenesis; disordered angiogenesis is considered to be involved in its formation. Apolipoprotein A-I binding protein (AIBP)-also known as NAXE (NAD [P]HX epimerase)-a regulator of cholesterol metabolism, plays a critical role in the pathological angiogenesis of mammals. In this study, we found that AIBP had much lower expression levels in both tissues from patients with IH and hemangioma endothelial cells (HemECs) than in adjacent normal tissues and human dermal vascular endothelial cells, respectively. Knockout of NAXE by CRISPR-Cas9 in HemECs enhanced tube formation and migration, and NAXE overexpression impaired tube formation and migration of HemECs. Interestingly, AIBP suppressed the proliferation of HemECs in hypoxia. We then found that reduced expression of AIBP correlated with increased hypoxia-inducible factor 1α levels in tissues from patients with IH and HemECs. Further mechanistic investigation demonstrated that AIBP disrupted hypoxia-inducible factor 1α signaling through cholesterol metabolism under hypoxia. Notably, AIBP significantly inhibited the development of IH in immunodeficient mice. Furthermore, using the validated mouse endothelial cell (ie, EOMA cells) and Naxe-/- mouse models, we demonstrated that both endogenous AIBP from tumors and AIBP in the tumor microenvironment limit the formation of hemangioma. These findings suggested that AIBP was a player in the pathogenesis of IH and could be a potential pharmacological target for treating IH.
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Affiliation(s)
- Yongying Jiang
- Department of Pathophysiology, School of Medicine, Nantong University, Jiangsu, China
| | - Xingjuan Li
- Department of Pathophysiology, School of Medicine, Nantong University, Jiangsu, China
| | - Qin Liu
- Department of Pathophysiology, School of Medicine, Nantong University, Jiangsu, China
| | - Gongyun Lei
- Department of Pathophysiology, School of Medicine, Nantong University, Jiangsu, China
| | - Changyue Wu
- Department of Dermatology, Affiliated Hospital of Nantong University, Nantong University, Jiangsu, China
| | - Long Chen
- Department of Pediatric Surgery, Affiliated Hospital of Nantong University, Nantong University, Jiangsu, China
| | - Yinshuang Zhao
- Department of Pediatric Surgery, Affiliated Hospital of Nantong University, Nantong University, Jiangsu, China
| | - Yae Hu
- Department of Pathophysiology, School of Medicine, Nantong University, Jiangsu, China
| | - Hua Xian
- Department of Pediatric Surgery, Affiliated Hospital of Nantong University, Nantong University, Jiangsu, China
| | - Renfang Mao
- Department of Pathophysiology, School of Medicine, Nantong University, Jiangsu, China.
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Choi S, Choi SH, Bastola T, Park Y, Oh J, Kim KY, Hwang S, Miller YI, Ju WK. AIBP: A New Safeguard against Glaucomatous Neuroinflammation. Cells 2024; 13:198. [PMID: 38275823 PMCID: PMC10814024 DOI: 10.3390/cells13020198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 01/27/2024] Open
Abstract
Glaucoma is a group of ocular diseases that cause irreversible blindness. It is characterized by multifactorial degeneration of the optic nerve axons and retinal ganglion cells (RGCs), resulting in the loss of vision. Major components of glaucoma pathogenesis include glia-driven neuroinflammation and impairment of mitochondrial dynamics and bioenergetics, leading to retinal neurodegeneration. In this review article, we summarize current evidence for the emerging role of apolipoprotein A-I binding protein (AIBP) as an important anti-inflammatory and neuroprotective factor in the retina. Due to its association with toll-like receptor 4 (TLR4), extracellular AIBP selectively removes excess cholesterol from the plasma membrane of inflammatory and activated cells. This results in the reduced expression of TLR4-associated, cholesterol-rich lipid rafts and the inhibition of downstream inflammatory signaling. Intracellular AIBP is localized to mitochondria and modulates mitophagy through the ubiquitination of mitofusins 1 and 2. Importantly, elevated intraocular pressure induces AIBP deficiency in mouse models and in human glaucomatous retina. AIBP deficiency leads to the activation of TLR4 in Müller glia, triggering mitochondrial dysfunction in both RGCs and Müller glia, and compromising visual function in a mouse model. Conversely, restoring AIBP expression in the retina reduces neuroinflammation, prevents RGCs death, and protects visual function. These results provide new insight into the mechanism of AIBP function in the retina and suggest a therapeutic potential for restoring retinal AIBP expression in the treatment of glaucoma.
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Affiliation(s)
- Seunghwan Choi
- Hamilton Glaucoma Center and Shiley Eye Institute, Viterbi Family Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA; (S.C.); (T.B.); (Y.P.)
| | - Soo-Ho Choi
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Tonking Bastola
- Hamilton Glaucoma Center and Shiley Eye Institute, Viterbi Family Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA; (S.C.); (T.B.); (Y.P.)
| | - Younggun Park
- Hamilton Glaucoma Center and Shiley Eye Institute, Viterbi Family Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA; (S.C.); (T.B.); (Y.P.)
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jonghyun Oh
- Hamilton Glaucoma Center and Shiley Eye Institute, Viterbi Family Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA; (S.C.); (T.B.); (Y.P.)
- Department of Ophthalmology, Dongguk University Ilsan Hospital, Goyang 10326, Republic of Korea
| | - Keun-Young Kim
- National Center for Microscopy and Imaging Research, Department of Neurosciences, University of California San Diego, La Jolla, CA 92093, USA
| | - Sinwoo Hwang
- Hamilton Glaucoma Center and Shiley Eye Institute, Viterbi Family Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA; (S.C.); (T.B.); (Y.P.)
| | - Yury I. Miller
- Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Won-Kyu Ju
- Hamilton Glaucoma Center and Shiley Eye Institute, Viterbi Family Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA; (S.C.); (T.B.); (Y.P.)
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Bezsonov E, Borisov E, Vinokurov A, Tvorogova A, Geletkanich A, Grigorovskaya A, Sinyov V, Kosyreva A, Orekhov A. Effects of native and modified low-density lipoproteins on mitophagy. Atherosclerosis 2023; 375:98-100. [PMID: 37211519 DOI: 10.1016/j.atherosclerosis.2023.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 05/09/2023] [Indexed: 05/23/2023]
Affiliation(s)
- Evgeny Bezsonov
- A. P. Avtsyn Research Institute of Human Morphology, Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", 3 Tsyurupa Street, 117418, Moscow, Russia; Laboratory of Angiopathology, The Institute of General Pathology and Pathophysiology, 8 Baltiyskaya Street, 125315, Moscow, Russia; Department of Biology and General Genetics, I. M. Sechenov First Moscow State Medical University (Sechenov University), 8 Izmailovsky Boulevard, 105043, Moscow, Russia; Cell Physiology & Pathology Laboratory of R&D Center of Biomedical Photonics, Orel State University, 95 Komsomolskaya Street, 302026, Orel, Russia.
| | - Evgeny Borisov
- A. P. Avtsyn Research Institute of Human Morphology, Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", 3 Tsyurupa Street, 117418, Moscow, Russia
| | - Andrey Vinokurov
- Cell Physiology & Pathology Laboratory of R&D Center of Biomedical Photonics, Orel State University, 95 Komsomolskaya Street, 302026, Orel, Russia
| | - Anna Tvorogova
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Institute of Gene Biology, Russian Academy of Sciences, 34/5 Vavilova Street, 119334, Moscow, Russia
| | - Artemiy Geletkanich
- A. P. Avtsyn Research Institute of Human Morphology, Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", 3 Tsyurupa Street, 117418, Moscow, Russia; Federal State Budgetary Educational Institution of Higher Education Dmitry Mendeleev University of Chemical Technology of Russia, Moscow, Russia
| | - Anna Grigorovskaya
- A. P. Avtsyn Research Institute of Human Morphology, Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", 3 Tsyurupa Street, 117418, Moscow, Russia; I. M. Sechenov First Moscow State Medical University (Sechenov University), 8 Izmailovsky Boulevard, 105043, Moscow, Russia
| | - Vasily Sinyov
- Laboratory of Angiopathology, The Institute of General Pathology and Pathophysiology, 8 Baltiyskaya Street, 125315, Moscow, Russia
| | - Anna Kosyreva
- A. P. Avtsyn Research Institute of Human Morphology, Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", 3 Tsyurupa Street, 117418, Moscow, Russia
| | - Alexander Orekhov
- Institute for Atherosclerosis Research, Osennyaya Street 4-1-207, 121609, Moscow, Russia.
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Ding L, Huang TT, Ying GH, Wang SY, Xu HF, Qian H, Rahman F, Lu XP, Guo H, Zheng G, Zhang G. De novo mutation of NAXE ( APOAIBP) -related early-onset progressive encephalopathy with brain edema and/or leukoencephalopathy-1: A case report. World J Clin Cases 2023; 11:3340-3350. [PMID: 37274027 PMCID: PMC10237136 DOI: 10.12998/wjcc.v11.i14.3340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/26/2023] [Accepted: 04/12/2023] [Indexed: 05/16/2023] Open
Abstract
BACKGROUND Early-onset progressive encephalopathy with brain edema and/or leukoencephalopathy-1 (PEBEL1) is a rare autosomal recessive severe neurometabolic disease. The aim of this study was to investigate the clinical characteristics and genetic pathogenicity of PEBEL1 caused by rare NAXE (or APOA1BP)-related defects.
CASE SUMMARY The patient was a girl aged 2 years and 10 mo. She was hospitalized due to walking disorder for > 40 d. The clinical manifestations were ataxia, motor function regression, hypotonia, and eyelid ptosis. Within 1 mo of hospitalization, she developed sigh breathing, respiratory failure, cerebellar edema and brain hernia, and finally she died. Changes were found in cranial imaging, including cerebellar edema accompanied by symmetrical myelopathy. Through whole exome sequencing, we detected NAXE compound heterozygous variation (NM 144772.3) c.733A>C (p. Lys245Gln, dbSNP: rs770023429) and novel variation c.370G>T (p.Gly124Cys) in the germline gene. The clinical features and core phenotypes of this case were consistent with 18 previously reported cases of PEBEL1.
CONCLUSION This is the first case of NAXE-related PEBEL1 with severe clinical phenotype in Mainland China. The p.Gly124Cys mutation discovered in this case has enriched the pathogenic variation spectrum of NAXE.
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Affiliation(s)
- Le Ding
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Ting-Ting Huang
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Guo-Huan Ying
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Shang-Yu Wang
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Hai-Feng Xu
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Hao Qian
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Faiza Rahman
- Rehman Medical Institute Peshawar, Peshawar 39250, Pakistan
| | - Xiao-Peng Lu
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Hu Guo
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Guo Zheng
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
| | - Gang Zhang
- Department of Neurology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China
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Becker PH, Thérond P, Gaignard P. Targeting mitochondrial function in macrophages: A novel treatment strategy for atherosclerotic cardiovascular disease? Pharmacol Ther 2023; 247:108441. [PMID: 37201736 DOI: 10.1016/j.pharmthera.2023.108441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
Atherosclerotic cardiovascular disease is a major cause of morbidity and mortality due to chronic arterial injury caused by hyperlipidemia, hypertension, inflammation and oxidative stress. Recent studies have shown that the progression of this disease is associated with mitochondrial dysfunction and with the accumulation of mitochondrial alterations within macrophages of atherosclerotic plaques. These alterations contribute to processes of inflammation and oxidative stress. Among the many players involved, macrophages play a pivotal role in atherogenesis as they can exert both beneficial and deleterious effects due to their anti- and pro-inflammatory properties. Their atheroprotective functions, such as cholesterol efflux and efferocytosis, as well as the maintenance of their polarization towards an anti-inflammatory state, are particularly dependent on mitochondrial metabolism. Moreover, in vitro studies have demonstrated deleterious effects of oxidized LDL on macrophage mitochondrial function, resulting in a switch to a pro-inflammatory state and to a potential loss of atheroprotective capacity. Therefore, preservation of mitochondrial function is now considered a legitimate therapeutic strategy. This review focuses on the potential therapeutic strategies that could improve the mitochondrial function of macrophages, enabling them to maintain their atheroprotective capacity. These emerging therapies could play a valuable role in counteracting the progression of atherosclerotic lesions and possibly inducing their regression.
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Affiliation(s)
- Pierre-Hadrien Becker
- Université Paris-Saclay, EA 7357, Lipides: Systèmes Analytiques et Biologiques, Châtenay-Malabry 92296, France; Hôpital Bicêtre, AP-HP, Laboratoire de Biochimie, Le Kremlin Bicêtre 94270, France.
| | - Patrice Thérond
- Université Paris-Saclay, EA 7357, Lipides: Systèmes Analytiques et Biologiques, Châtenay-Malabry 92296, France; Hôpital Bicêtre, AP-HP, Laboratoire de Biochimie, Le Kremlin Bicêtre 94270, France
| | - Pauline Gaignard
- Université Paris-Saclay, EA 7357, Lipides: Systèmes Analytiques et Biologiques, Châtenay-Malabry 92296, France; Hôpital Bicêtre, AP-HP, Laboratoire de Biochimie, Le Kremlin Bicêtre 94270, France
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Zhang Y, Weng J, Huan L, Sheng S, Xu F. Mitophagy in atherosclerosis: from mechanism to therapy. Front Immunol 2023; 14:1165507. [PMID: 37261351 PMCID: PMC10228545 DOI: 10.3389/fimmu.2023.1165507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/12/2023] [Indexed: 06/02/2023] Open
Abstract
Mitophagy is a type of autophagy that can selectively eliminate damaged and depolarized mitochondria to maintain mitochondrial activity and cellular homeostasis. Several pathways have been found to participate in different steps of mitophagy. Mitophagy plays a significant role in the homeostasis and physiological function of vascular endothelial cells, vascular smooth muscle cells, and macrophages, and is involved in the development of atherosclerosis (AS). At present, many medications and natural chemicals have been shown to alter mitophagy and slow the progression of AS. This review serves as an introduction to the field of mitophagy for researchers interested in targeting this pathway as part of a potential AS management strategy.
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Affiliation(s)
- Yanhong Zhang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jiajun Weng
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Traditional Chinese Medicine Clinical Medical School (Xiyuan), Peking University, Beijing, China
- Department of Integrated Traditional and Western Medicine, Peking University Health Science Center, Beijing, China
| | - Luyao Huan
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School of Beijing University of Chinese Medicine, Beijing, China
| | - Song Sheng
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fengqin Xu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Traditional Chinese Medicine Clinical Medical School (Xiyuan), Peking University, Beijing, China
- Department of Integrated Traditional and Western Medicine, Peking University Health Science Center, Beijing, China
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Li Y, Yang S, Jin X, Li D, Lu J, Wang X, Wu M. Mitochondria as novel mediators linking gut microbiota to atherosclerosis that is ameliorated by herbal medicine: A review. Front Pharmacol 2023; 14:1082817. [PMID: 36733506 PMCID: PMC9886688 DOI: 10.3389/fphar.2023.1082817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/06/2023] [Indexed: 01/18/2023] Open
Abstract
Atherosclerosis (AS) is the main cause of cardiovascular disease (CVD) and is characterized by endothelial damage, lipid deposition, and chronic inflammation. Gut microbiota plays an important role in the occurrence and development of AS by regulating host metabolism and immunity. As human mitochondria evolved from primordial bacteria have homologous characteristics, they are attacked by microbial pathogens as target organelles, thus contributing to energy metabolism disorders, oxidative stress, and apoptosis. Therefore, mitochondria may be a key mediator of intestinal microbiota disorders and AS aggravation. Microbial metabolites, such as short-chain fatty acids, trimethylamine, hydrogen sulfide, and bile acids, also affect mitochondrial function, including mtDNA mutation, oxidative stress, and mitophagy, promoting low-grade inflammation. This further damages cellular homeostasis and the balance of innate immunity, aggravating AS. Herbal medicines and their monomers can effectively ameliorate the intestinal flora and their metabolites, improve mitochondrial function, and inhibit atherosclerotic plaques. This review focuses on the interaction between gut microbiota and mitochondria in AS and explores a therapeutic strategy for restoring mitochondrial function and intestinal microbiota disorders using herbal medicines, aiming to provide new insights for the prevention and treatment of AS.
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Affiliation(s)
- Yujuan Li
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shengjie Yang
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiao Jin
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Dan Li
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jing Lu
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Beijing University of Chinese Medicine, Beijing, China
| | - Xinyue Wang
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Min Wu
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China,*Correspondence: Min Wu,
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Li X, Zhu X, Wei Y. Autophagy in Atherosclerotic Plaque Cells: Targeting NLRP3 Inflammasome for Self-Rescue. Biomolecules 2022; 13:15. [PMID: 36671400 PMCID: PMC9855815 DOI: 10.3390/biom13010015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Atherosclerosis (AS) is a lipid-driven disorder of the artery intima characterized by the equilibrium between inflammatory and regressive processes. A protein complex called NLRP3 inflammasome is involved in the release of mature interleukin-1β (IL-1β), which is connected to the initiation and progression of atherosclerosis. Autophagy, which includes macroautophagy, chaperone-mediated autophagy (CMA), and microautophagy, is generally recognized as the process by which cells transfer their constituents to lysosomes for digestion. Recent studies have suggested a connection between vascular inflammation and autophagy. This review summarizes the most recent studies and the underlying mechanisms associated with different autophagic pathways and NLRP3 inflammasomes in vascular inflammation, aiming to provide additional evidence for atherosclerosis research.
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Affiliation(s)
- Xuelian Li
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xianjie Zhu
- Department of Orthopaedic Surgery, Qingdao Municipal Hospital, Qingdao 266011, China
| | - Yumiao Wei
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Kim JD, Zhou T, Zhang A, Li S, Gupte AA, Hamilton DJ, Fang L. AIBP Regulates Metabolism of Ketone and Lipids but Not Mitochondrial Respiration. Cells 2022; 11:cells11223643. [PMID: 36429071 PMCID: PMC9688289 DOI: 10.3390/cells11223643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022] Open
Abstract
Accumulating evidence indicates that the APOA1 binding protein (AIBP)-a secreted protein-plays a profound role in lipid metabolism. Interestingly, AIBP also functions as an NAD(P)H-hydrate epimerase to catalyze the interconversion of NAD(P)H hydrate [NAD(P)HX] epimers and is renamed as NAXE. Thus, we call it NAXE hereafter. We investigated its role in NAD(P)H-involved metabolism in murine cardiomyocytes, focusing on the metabolism of hexose, lipids, and amino acids as well as mitochondrial redox function. Unbiased metabolite profiling of cardiac tissue shows that NAXE knockout markedly upregulates the ketone body 3-hydroxybutyric acid (3-HB) and increases or trends increasing lipid-associated metabolites cholesterol, α-linolenic acid and deoxycholic acid. Paralleling greater ketone levels, ChemRICH analysis of the NAXE-regulated metabolites shows reduced abundance of hexose despite similar glucose levels in control and NAXE-deficient blood. NAXE knockout reduces cardiac lactic acid but has no effect on the content of other NAD(P)H-regulated metabolites, including those associated with glucose metabolism, the pentose phosphate pathway, or Krebs cycle flux. Although NAXE is present in mitochondria, it has no apparent effect on mitochondrial oxidative phosphorylation. Instead, we detected more metabolites that can potentially improve cardiac function (3-HB, adenosine, and α-linolenic acid) in the Naxe-/- heart; these mice also perform better in aerobic exercise. Our data reveal a new role of NAXE in cardiac ketone and lipid metabolism.
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Affiliation(s)
- Jun-dae Kim
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6550 Fannin St., Houston, TX 77030, USA
| | - Teng Zhou
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6550 Fannin St., Houston, TX 77030, USA
| | - Aijun Zhang
- Center for Bioenergetics, Houston Methodist Research Institute, 6550 Fannin St., Houston, TX 77030, USA
- Department of Medicine, Houston Methodist, Weill Cornell Medicine Affiliate, 6550 Fannin St., Houston, TX 77030, USA
| | - Shumin Li
- Center for Bioenergetics, Houston Methodist Research Institute, 6550 Fannin St., Houston, TX 77030, USA
| | - Anisha A. Gupte
- Center for Bioenergetics, Houston Methodist Research Institute, 6550 Fannin St., Houston, TX 77030, USA
- Department of Medicine, Houston Methodist, Weill Cornell Medicine Affiliate, 6550 Fannin St., Houston, TX 77030, USA
| | - Dale J. Hamilton
- Center for Bioenergetics, Houston Methodist Research Institute, 6550 Fannin St., Houston, TX 77030, USA
- Department of Medicine, Houston Methodist, Weill Cornell Medicine Affiliate, 6550 Fannin St., Houston, TX 77030, USA
- Weill Cornell Medical College, Cornell University, 407 E 61st St., New York, NY 10065, USA
| | - Longhou Fang
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, 6550 Fannin St., Houston, TX 77030, USA
- Department of Medicine, Houston Methodist, Weill Cornell Medicine Affiliate, 6550 Fannin St., Houston, TX 77030, USA
- Weill Cornell Medical College, Cornell University, 407 E 61st St., New York, NY 10065, USA
- Correspondence: ; Tel.: +713-363-9012; Fax: +713-363-9782
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Yao M, Liu Y, Sun M, Qin S, Xin W, Guan X, Zhang B, He T, Huang Y. The molecular mechanisms and intervention strategies of mitophagy in cardiorenal syndrome. Front Physiol 2022; 13:1008517. [PMID: 36353377 PMCID: PMC9638141 DOI: 10.3389/fphys.2022.1008517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 10/13/2022] [Indexed: 11/15/2022] Open
Abstract
Cardiorenal syndrome (CRS) is defined as a disorder of the heart and kidney, in which acute or chronic injury of one organ may lead to acute or chronic dysfunction of the other. It is characterized by high morbidity and mortality, resulting in high economic costs and social burdens. However, there is currently no effective drug-based treatment. Emerging evidence implicates the involvement of mitophagy in the progression of CRS, including cardiovascular disease (CVD) and chronic kidney disease (CKD). In this review, we summarized the crucial roles and molecular mechanisms of mitophagy in the pathophysiology of CRS. It has been reported that mitophagy impairment contributes to a vicious loop between CKD and CVD, which ultimately accelerates the progression of CRS. Further, recent studies revealed that targeting mitophagy may serve as a promising therapeutic approach for CRS, including clinical drugs, stem cells and small molecule agents. Therefore, studies focusing on mitophagy may benefit for expanding innovative basic research, clinical trials, and therapeutic strategies for CRS.
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Affiliation(s)
- Mengying Yao
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yong Liu
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Mengjia Sun
- Department of Cardiology, Institute of Cardiovascular Diseases of PLA, The Second Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Shaozong Qin
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Wang Xin
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xu Guan
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Bo Zhang
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Ting He
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Yinghui Huang, ; Ting He,
| | - Yinghui Huang
- Department of Nephrology, The key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Yinghui Huang, ; Ting He,
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11
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Manor J, Calame D, Gijavanekar C, Fisher K, Hunter J, Mizerik E, Bacino C, Scaglia F, Elsea SH. NAXE deficiency: A neurometabolic disorder of NAD(P)HX repair amenable for metabolic correction. Mol Genet Metab 2022; 136:101-110. [PMID: 35637064 PMCID: PMC9893913 DOI: 10.1016/j.ymgme.2022.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/12/2022] [Accepted: 04/12/2022] [Indexed: 02/04/2023]
Abstract
The NAD(P)HX repair system is a metabolite damage repair mechanism responsible for restoration of NADH and NADPH after their inactivation by hydration. Deficiency in either of its two enzymes, NAD(P)HX dehydratase (NAXD) or NAD(P)HX epimerase (NAXE), causes a fatal neurometabolic disorder characterized by decompensations precipitated by inflammatory stress. Clinical findings include rapidly progressive muscle weakness, ataxia, ophthalmoplegia, and motor and cognitive regression, while neuroimaging abnormalities are subtle or nonspecific, making a clinical diagnosis challenging. During stress, nonenzymatic conversion of NAD(P)H to NAD(P)HX increases, and in the absence of repair, NAD(P)H is depleted, and NAD(P)HX accumulates, leading to decompensation; however, the contribution of each to the metabolic derangement is not established. Herein, we summarize the clinical knowledge of NAXE deficiency from 30 cases and lessons learned about disease pathogenesis from cell cultures and model organisms and describe a metabolomics signature obtained by untargeted metabolomics analysis in one case at the time of crisis and after initiation of treatment. Overall, biochemical findings support a model of acute depletion of NAD+, signs of mitochondrial dysfunction, and altered lipidomics. These findings are further substantiated by untargeted metabolomics six months post-crisis showing that niacin supplementation reverses primary metabolomic abnormalities concurrent with improved clinical status.
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Affiliation(s)
- Joshua Manor
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Texas Children's Hospital, Houston, TX, USA; Metabolic Diseases Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Israel.
| | - Daniel Calame
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Texas Children's Hospital, Houston, TX, USA; Division of Neurology and Developmental Neuroscience, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Charul Gijavanekar
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Kristen Fisher
- Texas Children's Hospital, Houston, TX, USA; Division of Neurology and Developmental Neuroscience, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Jill Hunter
- Texas Children's Hospital, Houston, TX, USA; Department of Radiology, Texas Children's Hospital, Houston, TX, USA
| | - Elizabeth Mizerik
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Texas Children's Hospital, Houston, TX, USA
| | - Carlos Bacino
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Texas Children's Hospital, Houston, TX, USA
| | - Fernando Scaglia
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Texas Children's Hospital, Houston, TX, USA; Joint BCM-CUHK Center of Medical Genetics, Prince of Wales Hospital, Sha Tin, Hong Kong
| | - Sarah H Elsea
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
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12
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Duan M, Chen H, Yin L, Zhu X, Novák P, Lv Y, Zhao G, Yin K. Mitochondrial apolipoprotein A-I binding protein alleviates atherosclerosis by regulating mitophagy and macrophage polarization. Cell Commun Signal 2022; 20:60. [PMID: 35525979 PMCID: PMC9077873 DOI: 10.1186/s12964-022-00858-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 03/05/2022] [Indexed: 12/22/2022] Open
Abstract
Apolipoprotein A-I binding protein (AIBP), a secreted protein, has been shown to play a pivotal role in the development of atherosclerosis. The function of intracellular AIBP, however, is not yet well characterized. Here, we found that AIBP is abundantly expressed within human and mouse atherosclerotic lesions and exhibits a distinct localization in the inner membrane of mitochondria in macrophages. Bone marrow-specific AIBP deficiency promotes the progression of atherosclerosis and increases macrophage infiltration and inflammation in low-density lipoprotein receptor-deficient (LDLR-/-) mice. Specifically, the lack of mitochondrial AIBP leads to mitochondrial metabolic disorders, thereby reducing the formation of mitophagy by promoting the cleavage of PTEN-induced putative kinase 1 (PINK1). With the reduction in mitochondrial autophagy, macrophages polarize to the M1 proinflammatory phenotype, which further promotes the development of atherosclerosis. Based on these results, mitochondrial AIBP in macrophages performs an antiatherosclerotic role by regulating of PINK1-dependent mitophagy and M1/M2 polarization. Video Abstract.
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Affiliation(s)
- Meng Duan
- Department of Cardiology, The Second Affiliated Hospital of Guilin Medical University, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin, 541100 Guangxi China
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Hainan Chen
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, China
| | - Linjie Yin
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Xiao Zhu
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
| | - Petr Novák
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
| | - Yuncheng Lv
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
| | - Guojun Zhao
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan City People’s Hospital, Qingyuan, 511518 Guangdong China
| | - Kai Yin
- Department of Cardiology, The Second Affiliated Hospital of Guilin Medical University, Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin, 541100 Guangxi China
- Guangxi Key Laboratory of Diabetic Systems Medicine, Guilin Medical University, Guilin, Guangxi China
- Research Lab of Translational Medicine, Hengyang Medical School, University of South China, Hengyang, China
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13
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Miller M, Pham AK, Gonen A, Navia-Pelaez JM, Xia K, Park S, Osterman AL, Bacon K, Beaton G, Kurten RC, Broide DH, Miller YI. Reduced AIBP expression in bronchial epithelial cells of asthmatic patients: Potential therapeutic target. Clin Exp Allergy 2022; 52:979-984. [PMID: 35460293 PMCID: PMC10241564 DOI: 10.1111/cea.14150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Marina Miller
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Alexa K Pham
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Ayelet Gonen
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Juliana M Navia-Pelaez
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Katherine Xia
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Sungwoo Park
- Raft Pharmaceuticals LLC, San Diego, California, USA
| | - Andrei L Osterman
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Kevin Bacon
- Raft Pharmaceuticals LLC, San Diego, California, USA
| | - Graham Beaton
- Raft Pharmaceuticals LLC, San Diego, California, USA
| | - Richard C Kurten
- Department of Pediatrics, Arkansas Children's Research Institute, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - David H Broide
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Yury I Miller
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, California, USA.,Raft Pharmaceuticals LLC, San Diego, California, USA
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14
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Abstract
Remodeling of mitochondrial dynamics and mitochondrial morphology plays a pivotal role in the maintenance of mitochondrial homeostasis in response to pathogenic attacks or stress stimuli. In addition to their role in metabolism and energy production, mitochondria participate in diverse biological functions, including innate immune responses driven by macrophages in response to infections or inflammatory stimuli. Mitofusin-2 (MFN2), a mitochondria-shaping protein regulating mitochondrial fusion and fission, plays a crucial role in linking mitochondrial function and innate immune responses. In this article, we review the role of MFN2 in the regulation of innate immune responses during viral and bacterial infections. We also summarize the current knowledge on the role of MFN2 in coordinating inflammatory, atherogenic, and fibrotic responses. MFN2-mediated crosstalk between mitochondrial dynamics and innate immune responses may determine the outcomes of pathogenic infections.
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Affiliation(s)
- In Soo Kim
- Department of Microbiology, Chungnam National University College of Medicine, Daejeon, Korea.,Infection Control Convergence Research Center, Chungnam National University College of Medicine, Daejeon, Korea
| | - Prashanta Silwal
- Department of Microbiology, Chungnam National University College of Medicine, Daejeon, Korea.,Infection Control Convergence Research Center, Chungnam National University College of Medicine, Daejeon, Korea
| | - Eun-Kyeong Jo
- Department of Microbiology, Chungnam National University College of Medicine, Daejeon, Korea.,Infection Control Convergence Research Center, Chungnam National University College of Medicine, Daejeon, Korea
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15
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Huang SF, Peng XF, Jiang L, Hu CY, Ye WC. LncRNAs as Therapeutic Targets and Potential Biomarkers for Lipid-Related Diseases. Front Pharmacol 2021; 12:729745. [PMID: 34421622 PMCID: PMC8371450 DOI: 10.3389/fphar.2021.729745] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 07/26/2021] [Indexed: 12/30/2022] Open
Abstract
Lipid metabolism is an essential biological process involved in nutrient adjustment, hormone regulation, and lipid homeostasis. An irregular lifestyle and long-term nutrient overload can cause lipid-related diseases, including atherosclerosis, myocardial infarction (MI), obesity, and fatty liver diseases. Thus, novel tools for efficient diagnosis and treatment of dysfunctional lipid metabolism are urgently required. Furthermore, it is known that lncRNAs based regulation like sponging microRNAs (miRNAs) or serving as a reservoir for microRNAs play an essential role in the progression of lipid-related diseases. Accordingly, a better understanding of the regulatory roles of lncRNAs in lipid-related diseases would provide the basis for identifying potential biomarkers and therapeutic targets for lipid-related diseases. This review highlighted the latest advances on the potential biomarkers of lncRNAs in lipid-related diseases and summarised current knowledge on dysregulated lncRNAs and their potential molecular mechanisms. We have also provided novel insights into the underlying mechanisms of lncRNAs which might serve as potential biomarkers and therapeutic targets for lipid-related diseases. The information presented here may be useful for designing future studies and advancing investigations of lncRNAs as biomarkers for diagnosis, prognosis, and therapy of lipid-related diseases.
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Affiliation(s)
- Shi-Feng Huang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, China
| | - Xiao-Fei Peng
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, China
| | - Lianggui Jiang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, China
| | - Ching Yuan Hu
- Department of Human Nutrition, Food and Animal Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa, Honolulu, HI, United States
| | - Wen-Chu Ye
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, China
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16
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Wang X, Luo D, Wu S. Molecular Dysfunctions of Mitochondria-Associated Endoplasmic Reticulum Contacts in Atherosclerosis. Oxid Med Cell Longev 2021; 2021:2424509. [PMID: 34336087 DOI: 10.1155/2021/2424509] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 07/11/2021] [Indexed: 02/05/2023]
Abstract
Atherosclerosis is a chronic lipid-driven inflammatory disease that results in the formation of lipid-rich and immune cell-rich plaques in the arterial wall, which has high morbidity and mortality in the world. The mechanism of atherosclerosis is still unclear now. Potential hypotheses involved in atherosclerosis are chronic inflammation theory, lipid percolation theory, mononuclear-macrophage theory, endothelial cell (EC) injury theory, and smooth muscle cell (SMC) mutation theory. Changes of phospholipids, glucose, critical proteins, etc. on mitochondria-associated endoplasmic reticulum membrane (MAM) can cause the progress of atherosclerosis. This review describes the structural and functional interaction between mitochondria and endoplasmic reticulum (ER) and explains the role of critical molecules in the structure of MAM during atherosclerosis.
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17
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Navia-Pelaez JM, Choi SH, Dos Santos Aggum Capettini L, Xia Y, Gonen A, Agatisa-Boyle C, Delay L, Gonçalves Dos Santos G, Catroli GF, Kim J, Lu JW, Saylor B, Winkels H, Durant CP, Ghosheh Y, Beaton G, Ley K, Kufareva I, Corr M, Yaksh TL, Miller YI. Normalization of cholesterol metabolism in spinal microglia alleviates neuropathic pain. J Exp Med 2021; 218:212084. [PMID: 33970188 PMCID: PMC8111462 DOI: 10.1084/jem.20202059] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/12/2021] [Accepted: 03/10/2021] [Indexed: 12/14/2022] Open
Abstract
Neuroinflammation is a major component in the transition to and perpetuation of neuropathic pain states. Spinal neuroinflammation involves activation of TLR4, localized to enlarged, cholesterol-enriched lipid rafts, designated here as inflammarafts. Conditional deletion of cholesterol transporters ABCA1 and ABCG1 in microglia, leading to inflammaraft formation, induced tactile allodynia in naive mice. The apoA-I binding protein (AIBP) facilitated cholesterol depletion from inflammarafts and reversed neuropathic pain in a model of chemotherapy-induced peripheral neuropathy (CIPN) in wild-type mice, but AIBP failed to reverse allodynia in mice with ABCA1/ABCG1–deficient microglia, suggesting a cholesterol-dependent mechanism. An AIBP mutant lacking the TLR4-binding domain did not bind microglia or reverse CIPN allodynia. The long-lasting therapeutic effect of a single AIBP dose in CIPN was associated with anti-inflammatory and cholesterol metabolism reprogramming and reduced accumulation of lipid droplets in microglia. These results suggest a cholesterol-driven mechanism of regulation of neuropathic pain by controlling the TLR4 inflammarafts and gene expression program in microglia and blocking the perpetuation of neuroinflammation.
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Affiliation(s)
| | - Soo-Ho Choi
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | - Yining Xia
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Ayelet Gonen
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | - Lauriane Delay
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA
| | | | | | - Jungsu Kim
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Jenny W Lu
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Benjamin Saylor
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | | | | | | | - Klaus Ley
- La Jolla Institute for Immunology, La Jolla, CA
| | - Irina Kufareva
- School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA
| | - Maripat Corr
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Tony L Yaksh
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA
| | - Yury I Miller
- Department of Medicine, University of California, San Diego, La Jolla, CA
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18
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Kim JD, Zhu L, Sun Q, Fang L. Systemic metabolite profiling reveals sexual dimorphism of AIBP control of metabolism in mice. PLoS One 2021; 16:e0248964. [PMID: 33793635 PMCID: PMC8016339 DOI: 10.1371/journal.pone.0248964] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/08/2021] [Indexed: 01/04/2023] Open
Abstract
Emerging studies indicate that APOA-I binding protein (AIBP) is a secreted protein and functions extracellularly to promote cellular cholesterol efflux, thereby disrupting lipid rafts on the plasma membrane. AIBP is also present in the mitochondria and acts as an epimerase, facilitating the repair of dysfunctional hydrated NAD(P)H, known as NAD(P)H(X). Importantly, AIBP deficiency contributes to lethal neurometabolic disorder, reminiscent of the Leigh syndrome in humans. Whereas cyclic NADPHX production is proposed to be the underlying cause, we hypothesize that an unbiased metabolic profiling may: 1) reveal new clues for the lethality, e.g., changes of mitochondrial metabolites., and 2) identify metabolites associated with new AIBP functions. To this end, we performed unbiased and profound metabolic studies of plasma obtained from adult AIBP knockout mice and control littermates of both genders. Our systemic metabolite profiling, encompassing 9 super pathways, identified a total of 640 compounds. Our studies demonstrate a surprising sexual dimorphism of metabolites affected by AIBP deletion, with more statistically significant changes in the AIBP knockout female vs male when compared with the corresponding controls. AIBP knockout trends to reduce cholesterol but increase the bile acid precursor 7-HOCA in female but not male. Complex lipids, phospholipids, sphingomyelin and plasmalogens were reduced, while monoacylglycerol, fatty acids and the lipid soluble vitamins E and carotene diol were elevated in AIBP knockout female but not male. NAD metabolites were not significantly different in AIBP knockout vs control mice but differed for male vs female mice. Metabolites associated with glycolysis and the Krebs cycle were unchanged by AIBP knockout. Importantly, polyamine spermidine, critical for many cellular functions including cerebral cortex synapses, was reduced in male but not female AIBP knockout. This is the first report of a systemic metabolite profile of plasma samples from AIBP knockout mice, and provides a metabolic basis for future studies of AIBP regulation of cellular metabolism and the pathophysiological presentation of AIBP deficiency in patients.
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Affiliation(s)
- Jun-dae Kim
- Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, TX, United States of America
| | - Lingping Zhu
- Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, TX, United States of America
- Department of Geriatric Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Quan Sun
- Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, TX, United States of America
- Department of Geriatric Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Longhou Fang
- Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, TX, United States of America
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, United States of America
- Weill Cornell Medical College, New York, NY, United States of America
- * E-mail:
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