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Antipova V, Heimes D, Seidel K, Schulz J, Schmitt O, Holzmann C, Rolfs A, Bidmon HJ, González de San Román Martín E, Huesgen PF, Amunts K, Keiler J, Hammer N, Witt M, Wree A. Differently increased volumes of multiple brain areas in Npc1 mutant mice following various drug treatments. Front Neuroanat 2024; 18:1430790. [PMID: 39081805 PMCID: PMC11286580 DOI: 10.3389/fnana.2024.1430790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 07/01/2024] [Indexed: 08/02/2024] Open
Abstract
Background Niemann-Pick disease type C1 (NPC1, MIM 257220) is a heritable lysosomal storage disease characterized by a progressive neurological degeneration that causes disability and premature death. A murine model of Npc1-/- displays a rapidly progressing form of Npc1 disease, which is characterized by weight loss, ataxia, and increased cholesterol storage. Npc1-/- mice receiving a combined therapy (COMBI) of miglustat (MIGLU), the neurosteroid allopregnanolone (ALLO) and the cyclic oligosaccharide 2-hydroxypropyl-β-cyclodextrin (HPßCD) showed prevention of Purkinje cell loss, improved motor function and reduced intracellular lipid storage. Although therapy of Npc1-/- mice with COMBI, MIGLU or HPßCD resulted in the prevention of body weight loss, reduced total brain weight was not positively influenced. Methods In order to evaluate alterations of different brain areas caused by pharmacotherapy, fresh volumes (volumes calculated from the volumes determined from paraffin embedded brain slices) of various brain structures in sham- and drug-treated wild type and mutant mice were measured using stereological methods. Results In the wild type mice, the volumes of investigated brain areas were not significantly altered by either therapy. Compared with the respective wild types, fresh volumes of specific brain areas, which were significantly reduced in sham-treated Npc1-/- mice, partly increased after the pharmacotherapies in all treatment strategies; most pronounced differences were found in the CA1 area of the hippocampus and in olfactory structures. Discussion Volumes of brain areas of Npc1-/- mice were not specifically changed in terms of functionality after administering COMBI, MIGLU, or HPßCD. Measurements of fresh volumes of brain areas in Npc1-/- mice could monitor region-specific changes and response to drug treatment that correlated, in part, with behavioral improvements in this mouse model.
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Affiliation(s)
- Veronica Antipova
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
- Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria
| | - Diana Heimes
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Mainz, Germany
| | - Katharina Seidel
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
- Klinik für Frauenheilkunde und Geburtshilfe, Dietrich-Bonhoeffer-Klinikum, Neubrandenburg, Germany
| | - Jennifer Schulz
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
| | - Oliver Schmitt
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
- Department of Anatomy, Medical School Hamburg, University of Applied Sciences and Medical University, Hamburg, Germany
| | - Carsten Holzmann
- Institute of Medical Genetics, Rostock University Medical Center, Rostock, Germany
- Centre of Transdisciplinary Neuroscience Rostock, Rostock, Germany
| | - Arndt Rolfs
- Medical Faculty, University of Rostock, Rostock, Germany
| | - Hans-Jürgen Bidmon
- Institute of Neurosciences and Medicine, Structural and Functional Organisation of the Brain (INM-1), Forschungszentrum Jülich, Jülich, Germany
- Central Institute of Engineering, Electronics and Analytics, ZEA-3, Forschungszentrum Jülich, Jülich, Germany
| | | | - Pitter F. Huesgen
- Central Institute of Engineering, Electronics and Analytics, ZEA-3, Forschungszentrum Jülich, Jülich, Germany
- Institut für Biologie II, AG Funktional Proteomics, Freiburg, Germany
| | - Katrin Amunts
- Institute of Neurosciences and Medicine, Structural and Functional Organisation of the Brain (INM-1), Forschungszentrum Jülich, Jülich, Germany
- C. and O. Vogt Institute for Brain Research, University Hospital Düsseldorf, University Düsseldorf, Düsseldorf, Germany
| | - Jonas Keiler
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
| | - Niels Hammer
- Division of Macroscopic and Clinical Anatomy, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria
- Department of Orthopedic and Trauma Surgery, University of Leipzig, Leipzig, Germany
- Division of Biomechatronics, Fraunhofer Institute for Machine Tools and Forming Technology, Dresden, Germany
| | - Martin Witt
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
- Department of Anatomy, Technische Universität Dresden, Dresden, Germany
- Department of Anatomy, Institute of Biostructural Basics of Medical Sciences, Poznan Medical University, Poznan, Poland
| | - Andreas Wree
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany
- Centre of Transdisciplinary Neuroscience Rostock, Rostock, Germany
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Organ Weights in NPC1 Mutant Mice Partly Normalized by Various Pharmacological Treatment Approaches. Int J Mol Sci 2022; 24:ijms24010573. [PMID: 36614015 PMCID: PMC9820376 DOI: 10.3390/ijms24010573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/14/2022] [Accepted: 12/22/2022] [Indexed: 12/31/2022] Open
Abstract
Niemann-Pick Type C1 (NPC1, MIM 257220) is a rare, progressive, lethal, inherited autosomal-recessive endolysosomal storage disease caused by mutations in the NPC1 leading to intracellular lipid storage. We analyzed mostly not jet known alterations of the weights of 14 different organs in the BALB/cNctr-Npc1m1N/-J Jackson Npc1 mice in female and male Npc1+/+ and Npc1-/- mice under various treatment strategies. Mice were treated with (i) no therapy, (ii) vehicle injection, (iii) a combination of miglustat, allopregnanolone, and 2-hydroxypropyl-ß-cyclodextrin (HPßCD), (iv) miglustat, and (v) HPßCD alone starting at P7 and repeated weekly throughout life. The 12 respective male and female wild-type mice groups were evaluated in parallel. In total, 351 mice (176 Npc1+/+, 175 Npc1-/-) were dissected at P65. In both sexes, the body weights of None and Sham Npc1-/- mice were lower than those of respective Npc1+/+ mice. The influence of the Npc1 mutation and/or sex on the weights of various organs, however, differed considerably. In males, Npc1+/+ and Npc1-/- mice had comparable absolute weights of lungs, spleen, and adrenal glands. In Npc1-/- mice, smaller weights of hearts, livers, kidneys, testes, vesicular, and scent glands were found. In female Npc1-/- mice, ovaries, and uteri were significantly smaller. In Npc1-/- mice, relative organ weights, i.e., normalized with body weights, were sex-specifically altered to different extents by the different therapies. The combination of miglustat, allopregnanolone, and the sterol chelator HPßCD partly normalized the weights of more organs than miglustat or HPßCD mono-therapies.
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Zhang J, Li X, Yu H, Larre I, Dube PR, Kennedy DJ, Tang WHW, Westfall K, Pierre SV, Xie Z, Chen Y. Regulation of Na/K-ATPase expression by cholesterol: isoform specificity and the molecular mechanism. Am J Physiol Cell Physiol 2020; 319:C1107-C1119. [PMID: 32997514 DOI: 10.1152/ajpcell.00083.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have reported that the reduction in plasma membrane cholesterol could decrease cellular Na/K-ATPase α1-expression through a Src-dependent pathway. However, it is unclear whether cholesterol could regulate other Na/K-ATPase α-isoforms and the molecular mechanisms of this regulation are not fully understood. Here we used cells expressing different Na/K-ATPase α isoforms and found that membrane cholesterol reduction by U18666A decreased expression of the α1-isoform but not the α2- or α3-isoform. Imaging analyses showed the cellular redistribution of α1 and α3 but not α2. Moreover, U18666A led to redistribution of α1 to late endosomes/lysosomes, while the proteasome inhibitor blocked α1-reduction by U18666A. These results suggest that the regulation of the Na/K-ATPase α-subunit by cholesterol is isoform specific and α1 is unique in this regulation through the endocytosis-proteasome pathway. Mechanistically, loss-of-Src binding mutation of A425P in α1 lost its capacity for regulation by cholesterol. Meanwhile, gain-of-Src binding mutations in α2 partially restored the regulation. Furthermore, through studies in caveolin-1 knockdown cells, as well as subcellular distribution studies in cell lines with different α-isoforms, we found that Na/K-ATPase, Src, and caveolin-1 worked together for the cholesterol regulation. Taken together, these new findings reveal that the putative Src-binding domain and the intact Na/K-ATPase/Src/caveolin-1 complex are indispensable for the isoform-specific regulation of Na/K-ATPase by cholesterol.
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Affiliation(s)
- Jue Zhang
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia.,Blood Research Institute, Versiti, Milwaukee, Wisconsin
| | - Xin Li
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hui Yu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Isabel Larre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Prabhatchandra R Dube
- Department of Medicine, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - David J Kennedy
- Department of Medicine, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - W H Wilson Tang
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio
| | - Kristen Westfall
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio
| | - Sandrine V Pierre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Yiliang Chen
- Blood Research Institute, Versiti, Milwaukee, Wisconsin.,Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
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Cav-1 deficiency promotes liver fibrosis in carbon tetrachloride (CCl 4)-induced mice by regulation of oxidative stress and inflammation responses. Biomed Pharmacother 2018; 102:26-33. [PMID: 29549726 DOI: 10.1016/j.biopha.2018.03.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 02/28/2018] [Accepted: 03/05/2018] [Indexed: 12/30/2022] Open
Abstract
Caveolin-1 (Cav-1), as a membrane protein involved in the formation of caveolae, binds steroid receptors and endothelial nitric oxide synthase, limiting its translocation and activation. In the present study, we investigated the role of Cav-1 in the progression of hepatic fibrosis induced by carbon tetrachloride (CCl4) in murine animals. Therefore, the wild type (WT) and Cav-1-knockout (Cav-1-/-) mice were used in our study and subjected to CCl4. The results indicated that CCl4 induced the decrease of Cav-1 expression in liver tissue samples. And Cav-1-/- intensified CCl4-triggered hepatic injury, evidenced by the stronger hepatic histological alterations, serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels and liver terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)-positive cells. CCl4 led to oxidative stress, supported by the reduced superoxide dismutase (SOD) activity and glutathione (GSH) levels, as well as enhanced malondialdehyde (MDA) and O2- levels in liver samples. And the process was intensified by Cav-1-/-. Additionally, CCl4-caused hepatic inflammation was aggregated by Cav-1-/- via further increasing the secretion of pro-inflammatory cytokines. Moreover, CCl4-caused fibrosis was strengthened by Cav-1-/-, which was evidenced by the up-regulation of α-smooth muscle actin (α-SMA), collagen alpha 1 type 1 (Col1A1), lysyl oxidase (Lox) and transforming growth factor-β1 (TGF-β1) in liver tissues. Similar results were observed in TGF-β1-stimulated hepatic stellate cells (HSCs) and LX-2 cells without Cav-1 expressions that in vitro, suppressing Cav-1 further accelerated TGF-β1-induced oxidative stress, inflammation and fibrosis development. In conclusion, our results indicated that Cav-1 played an important role in CCl4-induced hepatic injury, which may be used as potential therapeutic target for hepatic fibrosis treatment.
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Chen YH, Lin WW, Liu CS, Hsu LS, Lin YM, Su SL. Caveolin-1 Expression Ameliorates Nephrotic Damage in a Rabbit Model of Cholesterol-Induced Hypercholesterolemia. PLoS One 2016; 11:e0154210. [PMID: 27124120 PMCID: PMC4849769 DOI: 10.1371/journal.pone.0154210] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 04/10/2016] [Indexed: 01/14/2023] Open
Abstract
Caveolin-1 (CAV-1) participates in regulating vesicular transport, signal transduction, tumor progression, and cholesterol homeostasis. In the present study, we tested the hypothesis that CAV-1 improves dyslipidemia, inhibits cyclophilin A (CypA)- mediated ROS production, prevents mitochondrial compensatory action and attenuates oxidative stress responses in cholesterol-induced hypercholesterolemia. To determine the role of CAV-1 in mediating oxidative and antioxidative as well as cholesterol homeostasis, hypercholesterolemic rabbits were intravenously administered antenapedia-CAV-1 (AP-CAV-1) peptide for 2 wk. AP-CAV-1 enhanced CAV-1 expression by ˃15%, inhibited CypA expression by ˃50% (P < 0.05) and significantly improved dyslipidemia, thus reducing neutral lipid peroxidation. Moreover, CAV-1 attenuated hypercholesterolemia-induced changes in mitochondrial morphology and biogenesis and preserved mitochondrial respiratory function. In addition, CAV-1 protected against hypercholesterol-induced oxidative stress responses by reducing the degree of oxidative damage and enhancing the expression of antioxidant enzymes. CAV-1 treatment significantly suppressed apoptotic cell death, as evidenced by the reduction in the number of terminal deoxynucleotidyl transferase dUTP nick end-labeling-positive cells. We concluded that CAV-1 plays a critical role in inhibiting CypA-mediated ROS production, improving dyslipidemia, maintaining mitochondrial function, and suppressing oxidative stress responses that are vital for cell survival in hypercholesterol-affected renal organs.
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Affiliation(s)
- Ya-Hui Chen
- Vascular and Genomic Center, Changhua Christian Hospital, Changhua, Taiwan
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, Taichung, Taiwan
| | - Wei-Wen Lin
- Department of Internal Medicine, Division of Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chin-San Liu
- Vascular and Genomic Center, Changhua Christian Hospital, Changhua, Taiwan
- Graduate Institute of Integrative Medicine, China Medical University, Taichung, Taiwan
| | - Li-Sung Hsu
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, Taichung, Taiwan
| | - Yueh-Min Lin
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan
- Department of Medical Technology, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Shih-Li Su
- Vascular and Genomic Center, Changhua Christian Hospital, Changhua, Taiwan
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Changhua Christian Hospital, Changhua, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- * E-mail:
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Deutsch G, Muralidhar A, Le E, Borbon IA, Erickson RP. Extensive macrophage accumulation in young and old Niemann-Pick C1 model mice involves the alternative, M2, activation pathway and inhibition of macrophage apoptosis. Gene 2015; 578:242-50. [PMID: 26707209 DOI: 10.1016/j.gene.2015.12.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 12/11/2015] [Accepted: 12/14/2015] [Indexed: 12/18/2022]
Abstract
We have studied the pathophysiology of lung disease which occurs in two mouse models of Niemann-Pick C1 disease. We utilized Npc1(-/-) mice transgenic for normal gene expression in glia or neurons and glia at ages several fold the usual and a mouse model of the juvenile form of NPC1, a point mutation, at one age to confirm some findings. Lung weights, as per cent of body weight, increase much more than liver and spleen weights. Although pulmonary function parameters only vary for hysteresis between young and older Npc1(-/-) mice, they are markedly different than those found in normal control mice. Cholesterol accumulation continued in the older mice but sphingosine-1-phosphate was not increased. Bronchoalveolar lavage (BAL) showed a massive increase (26×) in the number of macrophages. Histologic examination from the older, transgenic Npc1(-/-) mice showed small foci of alveolar proteinosis and evidence of hemorrhage, as well as dense macrophage accumulation. A large subset of macrophages was immunopositive for Fizz1 or arginase-1, markers of the alternative activation pathway, while no Fizz1 or arginase-1 positive macrophages were found in wild-type mice. The percentage of marker positive macrophages was relatively stable at 5-10% at various ages and within the 2 transgenic models. Phosphohistone H3 and Ki67 showed low levels of proliferation of these macrophages. Apoptosis was prominent within lung capillary endothelial cells, but limited within macrophages. Thus, activation of the alternative pathway is involved in Niemann-Pick C1 associated pulmonary macrophage accumulation, with low proliferation of these cells balanced by low levels of apoptosis.
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Affiliation(s)
- Gail Deutsch
- Dept. of Pathology, Seattle Children's Hospital, Seattle, WA 98105-0371, United States
| | - Akshay Muralidhar
- Dept. of Pediatrics, Univ. of AZ Health Sci. Ctr., Tucson, AZ 85724-5073, United States
| | - Ellen Le
- Dept. of Pediatrics, Univ. of AZ Health Sci. Ctr., Tucson, AZ 85724-5073, United States
| | - Ivan A Borbon
- Dept. of Pediatrics, Univ. of AZ Health Sci. Ctr., Tucson, AZ 85724-5073, United States
| | - Robert P Erickson
- Dept. of Pediatrics, Univ. of AZ Health Sci. Ctr., Tucson, AZ 85724-5073, United States; Dept. of Molecular and Cellular Biology, Univ. of AZ, Tucson, AZ 85721, United States.
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