1
|
Žužul S, Kelam N, Racetin A, Kovačević P, Konjevoda S, Filipović N, Pavlović N, Vukojević K. Immunoexpression Patterns of Megalin, Cubilin, Caveolin-1, Gipc1 and Dab2IP in the Embryonic and Postnatal Development of the Kidneys in Yotari ( Dab1-/-) Mice. Biomedicines 2024; 12:1542. [PMID: 39062115 PMCID: PMC11274389 DOI: 10.3390/biomedicines12071542] [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: 06/15/2024] [Revised: 07/04/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Our study examines the immunoexpression patterns of Megalin, Cubilin, Caveolin-1, Gipc1 and Dab2IP in the embryonic development (E) and postnatal (P) mouse kidney, with a focus on differentiating patterns between wild-type (wt) and yotari, Dab1-/- (yot) mice. Immunofluorescence revealed raised immunoexpression of receptors Megalin and Cubilin at the ampulla/collecting ducts and convoluted tubules across all developmental stages, with the most prominent immunoexpression observed in the convoluted tubules and the parietal epithelium of the Bowman's capsule. Quantitative analysis showed a higher percentage of Megalin and Cubilin in wt compared to yot mice at E13.5. Co-expression of Megalin and Cubilin was observed at the apical membrane of convoluted tubules and the parietal layer of the Bowman's capsule. The staining intensity of Megalin varied across developmental stages, with the strongest reactivity observed at the ampulla and collecting ducts at embryonic day (E) 13.5 in wt mice. In contrast, Caveolin-1 exhibited high immunoexpression in the metanephric mesenchyme, blood vessels, and the border area between the metanephric mesenchyme and renal vesicle, with a decrease in immunoexpression as development progressed. Gipc1 showed diffuse cytoplasmic staining in metanephric mesenchyme, convoluted tubules and collecting ducts, with significant differences in immunoexpression between wild-type and yot mice at both investigated embryonic time points. Dab2IP immunofluorescent staining was most prominent in renal vesicle/glomeruli and ampulla/collecting ducts at E13.5, with mild staining intensity observed in the distal convoluted tubules postnatally. Our findings elucidate distinct immunoexpression of patterns and potential parts of these proteins in the development and function of the kidney, highlighting the importance of further investigation into their regulatory mechanisms.
Collapse
Affiliation(s)
- Sani Žužul
- Clinic for Surgery, Clinical Hospital Firule, 21 000 Split, Croatia;
| | - Nela Kelam
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, 21 000 Split, Croatia; (N.K.); (A.R.); (N.F.); (N.P.)
- Center for Translational Research in Biomedicine, School of Medicine, University of Split, 21 000 Split, Croatia
| | - Anita Racetin
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, 21 000 Split, Croatia; (N.K.); (A.R.); (N.F.); (N.P.)
- Center for Translational Research in Biomedicine, School of Medicine, University of Split, 21 000 Split, Croatia
| | - Petra Kovačević
- Department of Ophthalmology, University Hospital Center of Zagreb, 10 000 Zagreb, Croatia;
| | - Suzana Konjevoda
- Department of Health Studies, University of Zadar, 23 000 Zadar, Croatia;
- Department of Ophthalmology, General Hospital Zadar, 23 000 Zadar, Croatia
| | - Natalija Filipović
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, 21 000 Split, Croatia; (N.K.); (A.R.); (N.F.); (N.P.)
| | - Nikola Pavlović
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, 21 000 Split, Croatia; (N.K.); (A.R.); (N.F.); (N.P.)
| | - Katarina Vukojević
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, 21 000 Split, Croatia; (N.K.); (A.R.); (N.F.); (N.P.)
- Center for Translational Research in Biomedicine, School of Medicine, University of Split, 21 000 Split, Croatia
- Department of Anatomy, School of Medicine, University of Mostar, 88 000 Mostar, Bosnia and Herzegovina
| |
Collapse
|
2
|
Kataoka T, Ito H, Mori T, Hotta Y, Sanagawa A, Maeda Y, Furukawa-Hibi Y, Kimura K. Testosterone improved erectile function by upregulating transcriptional expression of growth factors in late androgen replacement therapy model rats. Int J Impot Res 2024; 36:437-442. [PMID: 36310186 DOI: 10.1038/s41443-022-00627-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 09/27/2022] [Indexed: 11/09/2022]
Abstract
We previously showed that castration of rats reduced erectile function over time; when testosterone replacement therapy was started 4 weeks after castration, erectile function improved. In this study, we examined the mechanism of improvement in erectile function following testosterone replacement therapy in rats. Thirty 12-week-old rats were divided into castrated (Cast), castrated with subcutaneous administration of testosterone (Cast + T), and sham (Sham) groups. Erectile function and mRNA and protein expression were evaluated in the rats by using standard methods. To assess erectile function, we measured the intracavernosal pressure, mean arterial pressure, mRNA expression of endothelial growth factors, and protein expression of endothelial nitric oxide synthase (eNOS). The intracavernosal pressure/mean arterial pressure ratio was significantly lower in the Cast group, and testosterone administration significantly improved (P = 0.017). Compared to the Cast group, the Cast+T group exhibited significantly increased mRNA expressions of vascular endothelial growth factor A (VEGF-A), intercellular adhesion molecule 1 (ICAM-1), transforming growth factor-β (TGF-β), nerve growth factor (NGF), α-smooth muscle actin (α-SMA), caveolae associated protein 1 (Cavin-1), Cavin-2, Cavin-3, sirtuin 1 (Sirt-1), sphingosine-1-phosphate 1 (S1P1), S1P2, and S1P3 and eNOS protein expression. Testosterone replacement therapy improved erectile function in castrated rats by increasing growth factors and eNOS protein.
Collapse
Affiliation(s)
- Tomoya Kataoka
- Department of Clinical Pharmaceutics, Graduate School of Medical Sciences, Nagoya City University, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
- Department of Pharmacology, Kataoka's lab, Graduate School of Pharmaceutical Sciences, Chiba Institute of Science, 15-8 Shiomi-cho, Choshi, Chiba, 288-0025, Japan.
| | - Hiroto Ito
- Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Taiki Mori
- Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Yuji Hotta
- Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Akimasa Sanagawa
- Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Yasuhiro Maeda
- Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Yoko Furukawa-Hibi
- Department of Clinical Pharmaceutics, Graduate School of Medical Sciences, Nagoya City University, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
- Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Kazunori Kimura
- Department of Clinical Pharmaceutics, Graduate School of Medical Sciences, Nagoya City University, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
- Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| |
Collapse
|
3
|
Glatz JFC, Heather LC, Luiken JJFP. CD36 as a gatekeeper of myocardial lipid metabolism and therapeutic target for metabolic disease. Physiol Rev 2024; 104:727-764. [PMID: 37882731 DOI: 10.1152/physrev.00011.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 10/02/2023] [Accepted: 10/22/2023] [Indexed: 10/27/2023] Open
Abstract
The multifunctional membrane glycoprotein CD36 is expressed in different types of cells and plays a key regulatory role in cellular lipid metabolism, especially in cardiac muscle. CD36 facilitates the cellular uptake of long-chain fatty acids, mediates lipid signaling, and regulates storage and oxidation of lipids in various tissues with active lipid metabolism. CD36 deficiency leads to marked impairments in peripheral lipid metabolism, which consequently impact on the cellular utilization of multiple different fuels because of the integrated nature of metabolism. The functional presence of CD36 at the plasma membrane is regulated by its reversible subcellular recycling from and to endosomes and is under the control of mechanical, hormonal, and nutritional factors. Aberrations in this dynamic role of CD36 are causally associated with various metabolic diseases, in particular insulin resistance, diabetic cardiomyopathy, and cardiac hypertrophy. Recent research in cardiac muscle has disclosed the endosomal proton pump vacuolar-type H+-ATPase (v-ATPase) as a key enzyme regulating subcellular CD36 recycling and being the site of interaction between various substrates to determine cellular substrate preference. In addition, evidence is accumulating that interventions targeting CD36 directly or modulating its subcellular recycling are effective for the treatment of metabolic diseases. In conclusion, subcellular CD36 localization is the major adaptive regulator of cellular uptake and metabolism of long-chain fatty acids and appears a suitable target for metabolic modulation therapy to mend failing hearts.
Collapse
Affiliation(s)
- Jan F C Glatz
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Lisa C Heather
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, United Kingdom
| | - Joost J F P Luiken
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| |
Collapse
|
4
|
Amiri Khosroshahi R, Mirzababaei A, Setayesh L, Bagheri R, Heidari Seyedmahalleh M, Wong A, Suzuki K, Mirzaei K. Dietary Insulin Index (DII) and Dietary Insulin load (DIL) and Caveolin gene variant interaction on cardiometabolic risk factors among overweight and obese women: a cross-sectional study. Eur J Med Res 2024; 29:74. [PMID: 38268038 PMCID: PMC10807169 DOI: 10.1186/s40001-024-01638-5] [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: 03/25/2023] [Accepted: 01/03/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND AND OBJECTIVE Studies have shown that Caveolin gene polymorphisms (CAV-1) are involved in chronic diseases, such as metabolic syndrome. Moreover, the dietary insulin index (DII) and dietary insulin load (DIL) have been shown to potentially elicit favorable effects on cardiovascular disease (CVD) risk. Therefore, this study sought to investigate the effect of DII DIL and CAV-1 interaction on CVD risk factors. METHODS This cross-sectional study consisted of 333 overweight and obese women aged 18-48 years. Dietary intakes, DII, and DIL were evaluated using the 147-item food frequency questionnaire (FFQ). Serum profiles were measured by standard protocols. The CAV-1 rs 3,807,992 and anthropometric data were measured by the PCR-RFLP method and bioelectrical impedance analysis (BIA), respectively. Participants were also divided into three groups based on DII, DIL score, and rs3807992 genotype. RESULTS This comparative cross-sectional study was conducted on 333 women classified as overweight or obese. Participants with A allele for the caveolin genotype and higher DII score showed significant interactions with high-density lipoprotein (HDL) (P for AA = 0.006 and P for AG = 0.019) and CRI-I (P for AA < 0.001 and P for AG = 0.024). In participants with AA genotype and greater DII score, interactions were observed in weight, systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol, CRI-II, fat-free mass (FFM), and skeletal muscle mass (SMM) (P < 0.079). Those with higher DIL scores and AA genotype had higher weight (P = 0.033), FFM (P = 0.022), and SMM (P = 0.024). In addition, DIL interactions for waist/hip ratio (WHR), waist circumference (WC), triglyceride (TG), CRI-I, and body fat mass (BFM) among individuals with AA genotype, while an HDL interaction was observed in individuals with AG and AA (P < 0.066). CONCLUSION The findings of the present study indicate that people who carry the caveolin rs3807992 (A) allele and have greater DII and DIL scores are at higher risk for several cardiovascular disease and metabolic syndrome biomarkers. These results highlight that diet, gene variants, and their interaction, should be considered in the risk evaluation of developing CVD.
Collapse
Affiliation(s)
- Reza Amiri Khosroshahi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Atieh Mirzababaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Leila Setayesh
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Bagheri
- Department of Exercise Physiology, University of Isfahan, Isfahan, Iran
| | - Mohammad Heidari Seyedmahalleh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Alexei Wong
- Department of Health and Human Performance, Marymount University, Arlington, USA
| | - Katsuhiko Suzuki
- Faculty of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, 359-1192, Japan.
| | - Khadijeh Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
| |
Collapse
|
5
|
Deng L, Kersten S, Stienstra R. Triacylglycerol uptake and handling by macrophages: From fatty acids to lipoproteins. Prog Lipid Res 2023; 92:101250. [PMID: 37619883 DOI: 10.1016/j.plipres.2023.101250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
Macrophages are essential innate immune cells and form our first line of immune defense. Also known as professional phagocytes, macrophages interact and take up various particles, including lipids. Defective lipid handling can drive excessive lipid accumulation leading to foam cell formation, a key feature of various cardiometabolic conditions such as atherosclerosis, non-alcoholic fatty liver disease, and obesity. At the same time, intracellular lipid storage and foam cell formation can also be viewed as a protective and anti-lipotoxic mechanism against a lipid-rich environment and associated elevated lipid uptake. Traditionally, foam cell formation has primarily been linked to cholesterol uptake via native and modified low-density lipoproteins. However, other lipids, including non-esterified fatty acids and triacylglycerol (TAG)-rich lipoproteins (very low-density lipoproteins and chylomicrons), can also interact with macrophages. Recent studies have identified multiple pathways mediating TAG uptake and processing by macrophages, including endocytosis and receptor/transporter-mediated internalization and transport. This review will present the current knowledge of how macrophages take up different lipids and lipoprotein particles and address how TAG-rich lipoproteins are processed intracellularly. Understanding how macrophages take up and process different lipid species such as TAG is necessary to design future therapeutic interventions to correct excessive lipid accumulation and associated co-morbidities.
Collapse
Affiliation(s)
- Lei Deng
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, the Netherlands
| | - Sander Kersten
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, the Netherlands
| | - Rinke Stienstra
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, the Netherlands; Department of Internal Medicine, Radboud University Medical Center, Nijmegen, the Netherlands.
| |
Collapse
|
6
|
Gandek TB, van der Koog L, Nagelkerke A. A Comparison of Cellular Uptake Mechanisms, Delivery Efficacy, and Intracellular Fate between Liposomes and Extracellular Vesicles. Adv Healthc Mater 2023; 12:e2300319. [PMID: 37384827 DOI: 10.1002/adhm.202300319] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 07/01/2023]
Abstract
A key aspect for successful drug delivery via lipid-based nanoparticles is their internalization in target cells. Two prominent examples of such drug delivery systems are artificial phospholipid-based carriers, such as liposomes, and their biological counterparts, the extracellular vesicles (EVs). Despite a wealth of literature, it remains unclear which mechanisms precisely orchestrate nanoparticle-mediated cargo delivery to recipient cells and the subsequent intracellular fate of therapeutic cargo. In this review, internalization mechanisms involved in the uptake of liposomes and EVs by recipient cells are evaluated, also exploring their intracellular fate after intracellular trafficking. Opportunities are highlighted to tweak these internalization mechanisms and intracellular fates to enhance the therapeutic efficacy of these drug delivery systems. Overall, literature to date shows that both liposomes and EVs are predominantly internalized through classical endocytosis mechanisms, sharing a common fate: accumulation inside lysosomes. Studies tackling the differences between liposomes and EVs, with respect to cellular uptake, intracellular delivery and therapy efficacy, remain scarce, despite its importance for the selection of an appropriate drug delivery system. In addition, further exploration of functionalization strategies of both liposomes and EVs represents an important avenue to pursue in order to control internalization and fate, thereby improving therapeutic efficacy.
Collapse
Affiliation(s)
- Timea B Gandek
- Pharmaceutical Analysis, Groningen Research Institute of Pharmacy, University of Groningen, P.O. Box 196, XB20, Groningen, 9700 AD, The Netherlands
| | - Luke van der Koog
- Molecular Pharmacology, Groningen Research Institute of Pharmacy, University of Groningen, P.O. Box 196, XB10, Groningen, 9700 AD, The Netherlands
| | - Anika Nagelkerke
- Pharmaceutical Analysis, Groningen Research Institute of Pharmacy, University of Groningen, P.O. Box 196, XB20, Groningen, 9700 AD, The Netherlands
| |
Collapse
|
7
|
Al Madhoun A, Kochumon S, Haddad D, Thomas R, Nizam R, Miranda L, Sindhu S, Bitar MS, Ahmad R, Al-Mulla F. Adipose Tissue Caveolin-1 Upregulation in Obesity Involves TNF-α/NF-κB Mediated Signaling. Cells 2023; 12:cells12071019. [PMID: 37048092 PMCID: PMC10093236 DOI: 10.3390/cells12071019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 03/19/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
Obesity is characterized by chronic low-grade inflammation. Obese people have higher levels of caveolin-1 (CAV1), a structural and functional protein present in adipose tissues (ATs). We aimed to define the inflammatory mediators that influence CAV1 gene regulation and the associated mechanisms in obesity. Using subcutaneous AT from 27 (7 lean and 20 obese) normoglycemic individuals, in vitro human adipocyte models, and in vivo mice models, we found elevated CAV1 expression in obese AT and a positive correlation between the gene expression of CAV1, tumor necrosis factor-alpha (TNF-α), and the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). CAV1 gene expression was associated with proinflammatory cytokines and chemokines and their cognate receptors (r ≥ 0.447, p ≤ 0.030), but not with anti-inflammatory markers. CAV1 expression was correlated with CD163, indicating a prospective role for CAV1 in the adipose inflammatory microenvironment. Unlike wild-type animals, mice lacking TNF-α exhibited reduced levels of CAV1 mRNA/proteins, which were elevated by administering exogenous TNF-α. Mechanistically, TNF-α induces CAV1 gene transcription by mediating NF-κB binding to its two regulatory elements located in the CAV1 proximal regulatory region. The interplay between CAV1 and the TNF-α signaling pathway is intriguing and has potential as a target for therapeutic interventions in obesity and metabolic syndromes.
Collapse
Affiliation(s)
- Ashraf Al Madhoun
- Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (D.H.); (R.N.); (M.S.B.)
- Animal and Imaging Core Facilities, Dasman Diabetes Institute, Dasman 15462, Kuwait; (L.M.); (S.S.)
- Correspondence: (A.A.M.); (R.A.); (F.A.-M.); Tel.: +965-2224-2999 (ext. 2211) (F.A.-M.)
| | - Shihab Kochumon
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (R.T.)
| | - Dania Haddad
- Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (D.H.); (R.N.); (M.S.B.)
| | - Reeby Thomas
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (R.T.)
| | - Rasheeba Nizam
- Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (D.H.); (R.N.); (M.S.B.)
| | - Lavina Miranda
- Animal and Imaging Core Facilities, Dasman Diabetes Institute, Dasman 15462, Kuwait; (L.M.); (S.S.)
| | - Sardar Sindhu
- Animal and Imaging Core Facilities, Dasman Diabetes Institute, Dasman 15462, Kuwait; (L.M.); (S.S.)
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (R.T.)
| | - Milad S. Bitar
- Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (D.H.); (R.N.); (M.S.B.)
- Department of Pharmacology, Faculty of Medicine, Kuwait University, Jabriya 046300, Kuwait
| | - Rasheed Ahmad
- Immunology & Microbiology Department, Dasman Diabetes Institute, Dasman 15462, Kuwait; (S.K.); (R.T.)
- Correspondence: (A.A.M.); (R.A.); (F.A.-M.); Tel.: +965-2224-2999 (ext. 2211) (F.A.-M.)
| | - Fahd Al-Mulla
- Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15462, Kuwait; (D.H.); (R.N.); (M.S.B.)
- Correspondence: (A.A.M.); (R.A.); (F.A.-M.); Tel.: +965-2224-2999 (ext. 2211) (F.A.-M.)
| |
Collapse
|
8
|
Caveolin-1 rs1997623 Single Nucleotide Polymorphism Creates a New Binding Site for the Early B-Cell Factor 1 That Instigates Adipose Tissue CAV1 Protein Overexpression. Cells 2022; 11:cells11233937. [PMID: 36497195 PMCID: PMC9738758 DOI: 10.3390/cells11233937] [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: 09/01/2022] [Revised: 11/22/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
Caveolin-1 (CAV1) is implicated in the pathophysiology of diabetes and obesity. Previously, we demonstrated an association between the CAV1 rs1997623 C > A variant and metabolic syndrome (MetS). Here, we decipher the functional role of rs1997623 in CAV1 gene regulation. A cohort of 38 patients participated in this study. The quantitative MetS scores (siMS) of the participants were computed. CAV1 transcript and protein expression were tested in subcutaneous adipose tissue using RT-PCR and immunohistochemistry. Chromatin immunoprecipitation assays were performed using primary preadipocytes isolated from individuals with different CAV1 rs1997623 genotypes (AA, AC, and CC). The regulatory region flanking the variant was cloned into a luciferase reporter plasmid and expressed in human preadipocytes. Additional knockdown and overexpression assays were carried out. We show a significant correlation between siMS and CAV1 transcript levels and protein levels in human adipose tissue collected from an Arab cohort. We found that the CAV1 rs1997623 A allele generates a transcriptionally active locus and a new transcription factor binding site for early B-cell factor 1 (EBF1), which enhanced CAV1 expression. Our in vivo and in vitro combined study implicates, for the first time, EBF1 in regulating CAV1 expression in individuals harboring the rs1997623 C > A variant.
Collapse
|
9
|
Improving endothelial cell junction integrity by diphenylmethanone derivatives at oxidative stress: A dual-action directly targeting caveolar caveolin-1. Toxicol Appl Pharmacol 2022; 455:116264. [DOI: 10.1016/j.taap.2022.116264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 09/03/2022] [Accepted: 09/30/2022] [Indexed: 11/23/2022]
|
10
|
Kotlyarov S. Immune Function of Endothelial Cells: Evolutionary Aspects, Molecular Biology and Role in Atherogenesis. Int J Mol Sci 2022; 23:ijms23179770. [PMID: 36077168 PMCID: PMC9456046 DOI: 10.3390/ijms23179770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
Atherosclerosis is one of the key problems of modern medicine, which is due to the high prevalence of atherosclerotic cardiovascular diseases and their significant share in the structure of morbidity and mortality in many countries. Atherogenesis is a complex chain of events that proceeds over many years in the vascular wall with the participation of various cells. Endothelial cells are key participants in vascular function. They demonstrate involvement in the regulation of vascular hemodynamics, metabolism, and innate immunity, which act as leading links in the pathogenesis of atherosclerosis. These endothelial functions have close connections and deep evolutionary roots, a better understanding of which will improve the prospects of early diagnosis and effective treatment.
Collapse
Affiliation(s)
- Stanislav Kotlyarov
- Department of Nursing, Ryazan State Medical University, 390026 Ryazan, Russia
| |
Collapse
|
11
|
Yemanyi F, Bora K, Blomfield AK, Wang Z, Chen J. Wnt Signaling in Inner Blood-Retinal Barrier Maintenance. Int J Mol Sci 2021; 22:11877. [PMID: 34769308 PMCID: PMC8584977 DOI: 10.3390/ijms222111877] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 12/14/2022] Open
Abstract
The retina is a light-sensing ocular tissue that sends information to the brain to enable vision. The blood-retinal barrier (BRB) contributes to maintaining homeostasis in the retinal microenvironment by selectively regulating flux of molecules between systemic circulation and the retina. Maintaining such physiological balance is fundamental to visual function by facilitating the delivery of nutrients and oxygen and for protection from blood-borne toxins. The inner BRB (iBRB), composed mostly of inner retinal vasculature, controls substance exchange mainly via transportation processes between (paracellular) and through (transcellular) the retinal microvascular endothelium. Disruption of iBRB, characterized by retinal edema, is observed in many eye diseases and disturbs the physiological quiescence in the retina's extracellular space, resulting in vision loss. Consequently, understanding the mechanisms of iBRB formation, maintenance, and breakdown is pivotal to discovering potential targets to restore function to compromised physiological barriers. These unraveled targets can also inform potential drug delivery strategies across the BRB and the blood-brain barrier into retinas and brain tissues, respectively. This review summarizes mechanistic insights into the development and maintenance of iBRB in health and disease, with a specific focus on the Wnt signaling pathway and its regulatory role in both paracellular and transcellular transport across the retinal vascular endothelium.
Collapse
Affiliation(s)
| | | | | | | | - Jing Chen
- Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (F.Y.); (K.B.); (A.K.B.); (Z.W.)
| |
Collapse
|
12
|
Mirzababaei A, Shiraseb F, Abaj F, Khosroshahi RA, Tavakoli A, Koohdani F, Clark CCT, Mirzaei K. The effect of dietary total antioxidant capacity (DTAC) and Caveolin-1 gene variant interaction on cardiovascular risk factors among overweight and obese women: A cross-sectional investigation. Clin Nutr 2021; 40:4893-4903. [PMID: 34358834 DOI: 10.1016/j.clnu.2021.07.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/26/2021] [Accepted: 07/06/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Previous studies have shown that the Caveolin-1 (CAV-1) gene variant may be associated with Cardiovascular disease (CVD) risk. Moreover, dietary total antioxidant capacity (DTAC) has been shown to potentially elicit favorable effects on CVD risk. Therefore, this study sought to investigate the effect of DTAC and CAV-1 interaction on CVD risk factors. METHODS This cross-sectional study consisted of 352 women, with overweight and/or obesity, aged 18-48years from Iran. A food frequency questionnaire (FFQ), with 147 items, was used to assess dietary intake. The CAV-1 rs 3807992 and anthropometric data were measured by the PCR-RFLP method and bioelectrical impedance analysis (BIA), respectively. Serum profiles were measured by standard protocols. Participants were also divided into two groups based on DTAC score and rs3807992 genotype. RESULTS The mean age of the participants was 37.34 ± 9.11 and 36.01 ± 9.12 years for homozygous (GG) and minor allele carriers (AG + AA) respectively.The mean ± SD of insulin, total cholesterol (TC),high-density lipoprotein (HDL), low-density lipoprotein (LDL) and TG of participants were 1.21 ± 0.23, 185.3 ± 35.77, 46.58 ± 10.86, 95.3 ± 24.12 and 118.1 ± 58.88, respectively. There was a significant difference between genotypes for physical activity (P = 0.05), HDL (P < 0.001), insulin (P = 0.04), CRI-I (TC/HDL-C) (P = 0.01), and CRI-II (LDL-C/HDL-C) (P = 0.04). Our findings also showed, after controlling for confounding factors, significant interactions between DTAC score and the A allele carrier group on TC (Pinteraction = 0.001), LDL (Pinteraction = 0.001), insulin (Pinteraction = 0.08), HOMA-IR (Pinteraction = 0.03), AC ((TC - HDL - C)/HDL - C) (Pinteraction = 0.001), and CHOLINDEX (LDL-C-HDL-C) (Pinteraction = 0.02). CONCLUSION The results of the present study indicate that high DTAC intake may modify the odds of risk factors for CVD in AA and AG genotypes of rs 3807992. These results highlight that diet, gene variants, and their interaction, should be considered in CVD risk assessment.
Collapse
Affiliation(s)
- Atieh Mirzababaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Farideh Shiraseb
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Faezeh Abaj
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Reza Amiri Khosroshahi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Atefeh Tavakoli
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Fariba Koohdani
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Cain C T Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, UK
| | - Khadijeh Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
| |
Collapse
|
13
|
Mustapha S, Mohammed M, Azemi AK, Yunusa I, Shehu A, Mustapha L, Wada Y, Ahmad MH, Ahmad WANW, Rasool AHG, Mokhtar SS. Potential Roles of Endoplasmic Reticulum Stress and Cellular Proteins Implicated in Diabesity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8830880. [PMID: 33995826 PMCID: PMC8099518 DOI: 10.1155/2021/8830880] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 03/28/2021] [Accepted: 04/05/2021] [Indexed: 12/12/2022]
Abstract
The role of the endoplasmic reticulum (ER) has evolved from protein synthesis, processing, and other secretory pathways to forming a foundation for lipid biosynthesis and other metabolic functions. Maintaining ER homeostasis is essential for normal cellular function and survival. An imbalance in the ER implied stressful conditions such as metabolic distress, which activates a protective process called unfolded protein response (UPR). This response is activated through some canonical branches of ER stress, i.e., the protein kinase RNA-like endoplasmic reticulum kinase (PERK), inositol-requiring enzyme 1α (IRE1α), and activating transcription factor 6 (ATF6). Therefore, chronic hyperglycemia, hyperinsulinemia, increased proinflammatory cytokines, and free fatty acids (FFAs) found in diabesity (a pathophysiological link between obesity and diabetes) could lead to ER stress. However, limited data exist regarding ER stress and its association with diabesity, particularly the implicated proteins and molecular mechanisms. Thus, this review highlights the role of ER stress in relation to some proteins involved in diabesity pathogenesis and provides insight into possible pathways that could serve as novel targets for therapeutic intervention.
Collapse
Affiliation(s)
- Sagir Mustapha
- Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
- Department of Pharmacology and Therapeutics, Ahmadu Bello University Zaria, Kaduna, Nigeria
| | - Mustapha Mohammed
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Pulau Pinang, Malaysia
- Department of Clinical Pharmacy and Pharmacy Practice, Ahmadu Bello University Zaria, Kaduna, Nigeria
| | - Ahmad Khusairi Azemi
- Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
| | - Ismaeel Yunusa
- Department of Clinical Pharmacy and Outcomes Sciences, University of South Carolina, College of Pharmacy, Columbia, SC, USA
| | - Aishatu Shehu
- Department of Pharmacology and Therapeutics, Ahmadu Bello University Zaria, Kaduna, Nigeria
| | - Lukman Mustapha
- Department of Pharmaceutical and Medicinal Chemistry, Kaduna State University, Kaduna, Nigeria
| | - Yusuf Wada
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
- Department of Zoology, Ahmadu Bello University Zaria, Kaduna, Nigeria
| | - Mubarak Hussaini Ahmad
- Department of Pharmacology and Therapeutics, Ahmadu Bello University Zaria, Kaduna, Nigeria
- School of Pharmacy Technician, Aminu Dabo College of Health Sciences and Technology, Kano, Nigeria
| | - Wan Amir Nizam Wan Ahmad
- Biomedicine Programme, School of Health Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
| | - Aida Hanum Ghulam Rasool
- Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
- Hospital Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
| | - Siti Safiah Mokhtar
- Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
| |
Collapse
|
14
|
García JG, Ansorena E, Milagro FI, Zalba G, de Miguel C. Endothelial Nox5 Expression Modulates Glucose Uptake and Lipid Accumulation in Mice Fed a High-Fat Diet and 3T3-L1 Adipocytes Treated with Glucose and Palmitic Acid. Int J Mol Sci 2021; 22:ijms22052729. [PMID: 33800461 PMCID: PMC7962974 DOI: 10.3390/ijms22052729] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/22/2021] [Accepted: 03/05/2021] [Indexed: 12/14/2022] Open
Abstract
Obesity is a global health issue associated with insulin resistance and altered lipid homeostasis. It has been described that reactive oxygen species (ROS) derived from nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) activity are involved in the development of these pathologies. The present study describes the role of endothelial NOX5 expression over adipose tissue by using two experimental systems: NOX5 conditional knock-in mice fed with a high-fat diet and 3T3-L1 adipocytes cultured with conditioned media of NOX5-expressing endothelial cells previously treated with glucose and palmitic acid. Animals expressing NOX5 presented lower body weight gain and less mesenteric and epididymal adipose mass compared to control mice fed with the same diet. NOX5-expressing mice also showed significantly lower glycaemia and improved insulin-induced glucose uptake. In addition, Glut4 and Caveolin 1 (Cav1) expression were significantly increased in the adipose tissue of these animals. Likewise, 3T3-L1 adipocytes treated with conditioned media from NOX5-expressing endothelial cells, incubated with high glucose and palmitic acid, presented a reduction in lipid accumulation and an increase in glucose uptake. Moreover, a significant increase in the expression of Glut4 and Cav1 was also detected in these cells. Taken together, all these data support that, in response to a highly caloric diet, NOX5 endothelial activity may regulate glucose sensitivity and lipid homeostasis in the adipose tissue.
Collapse
Affiliation(s)
- Jorge G. García
- Department of Biochemistry and Genetics, University of Navarra, 31008 Pamplona, Spain; (J.G.G.); (E.A.); (G.Z.)
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain;
| | - Eduardo Ansorena
- Department of Biochemistry and Genetics, University of Navarra, 31008 Pamplona, Spain; (J.G.G.); (E.A.); (G.Z.)
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain;
| | - Fermín I. Milagro
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain;
- Center for Nutrition Research, Department of Nutrition, Food Science, and Physiology, University of Navarra, 31008 Pamplona, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobm), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Guillermo Zalba
- Department of Biochemistry and Genetics, University of Navarra, 31008 Pamplona, Spain; (J.G.G.); (E.A.); (G.Z.)
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain;
| | - Carlos de Miguel
- Department of Biochemistry and Genetics, University of Navarra, 31008 Pamplona, Spain; (J.G.G.); (E.A.); (G.Z.)
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain;
- Correspondence: ; Tel.: +34-948-425600 (ext. 806462)
| |
Collapse
|
15
|
Luchetti F, Crinelli R, Nasoni MG, Benedetti S, Palma F, Fraternale A, Iuliano L. LDL receptors, caveolae and cholesterol in endothelial dysfunction: oxLDLs accomplices or victims? Br J Pharmacol 2020; 178:3104-3114. [PMID: 32986849 DOI: 10.1111/bph.15272] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/29/2020] [Accepted: 09/11/2020] [Indexed: 12/14/2022] Open
Abstract
Oxidized LDLs (oxLDLs) and oxysterols play a key role in endothelial dysfunction and the development of atherosclerosis. The loss of vascular endothelium function negatively impacts vasomotion, cell growth, adhesiveness and barrier functions. While for some of these disturbances, a reasonable explanation can be provided from a mechanistic standpoint, for many others, the molecular mediators that are involved are unknown. Caveolae, specific plasma membrane domains, have recently emerged as targets and mediators of oxLDL-induced endothelial dysfunction. Caveolae and their associated protein caveolin-1 (Cav-1) are involved in oxLDLs/LDLs transcytosis, mainly through the scavenger receptor class B type 1 (SR-B1 or SCARB1). In contrast, oxLDLs endocytosis is mediated by the lectin-like oxidized LDL receptor 1 (LOX-1), whose activity depends on an intact caveolae system. In addition, LOX-1 regulates the expression of Cav-1 and vice versa. On the other hand, oxLDLs may affect cholesterol plasma membrane content/distribution thus influencing caveolae architecture, Cav-1 localization and the associated signalling. Overall, the evidence indicate that caveolae have both active and passive roles in oxLDL-induced endothelial cell dysfunction. First, as mediators of lipid uptake and transfer in the subendothelial space and, later, as targets of changes in composition/dynamics of plasma membrane lipids resulting from increased levels of circulating oxLDLs. Gaining a better understanding of how oxLDLs interact with endothelial cells and modulate caveolae-mediated signalling pathways, leading to endothelial dysfunction, is crucial to find new targets for intervention to tackle atherosclerosis and the related clinical entities. LINKED ARTICLES: This article is part of a themed issue on Oxysterols, Lifelong Health and Therapeutics. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.16/issuetoc.
Collapse
Affiliation(s)
- Francesca Luchetti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Rita Crinelli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Maria Gemma Nasoni
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Serena Benedetti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Francesco Palma
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | | | - Luigi Iuliano
- Department of Medico-Surgical Sciences and Biotechnologies Vascular Biology, Atherothrombosis & Mass Spectrometry, Sapienza University of Rome, Latina, Italy
| |
Collapse
|
16
|
Filippini A, D’Alessio A. Caveolae and Lipid Rafts in Endothelium: Valuable Organelles for Multiple Functions. Biomolecules 2020; 10:biom10091218. [PMID: 32825713 PMCID: PMC7563503 DOI: 10.3390/biom10091218] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 12/22/2022] Open
Abstract
Caveolae are flask-shaped invaginations of the plasma membrane found in numerous cell types and are particularly abundant in endothelial cells and adipocytes. The lipid composition of caveolae largely matches that of lipid rafts microdomains that are particularly enriched in cholesterol, sphingomyelin, glycosphingolipids, and saturated fatty acids. Unlike lipid rafts, whose existence remains quite elusive in living cells, caveolae can be clearly distinguished by electron microscope. Despite their similar composition and the sharing of some functions, lipid rafts appear more heterogeneous in terms of size and are more dynamic than caveolae. Following the discovery of caveolin-1, the first molecular marker as well as the unique scaffolding protein of caveolae, we have witnessed a remarkable increase in studies aimed at investigating the role of these organelles in cell functions and human disease. The goal of this review is to discuss the most recent studies related to the role of caveolae and caveolins in endothelial cells. We first recapitulate the major embryological processes leading to the formation of the vascular tree. We next discuss the contribution of caveolins and cavins to membrane biogenesis and cell response to extracellular stimuli. We also address how caveolae and caveolins control endothelial cell metabolism, a central mechanism involved in migration proliferation and angiogenesis. Finally, as regards the emergency caused by COVID-19, we propose to study the caveolar platform as a potential target to block virus entry into endothelial cells.
Collapse
Affiliation(s)
- Antonio Filippini
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Unit of Histology and Medical Embryology, Sapienza University of Rome, 00161 Roma, Italy;
| | - Alessio D’Alessio
- Dipartimento di Scienze della Vita e Sanità Pubblica, Sezione di Istologia ed Embriologia, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario “Agostino Gemelli”, IRCCS, 00168 Roma, Italia
- Correspondence:
| |
Collapse
|
17
|
Diem K, Fauler M, Fois G, Hellmann A, Winokurow N, Schumacher S, Kranz C, Frick M. Mechanical stretch activates piezo1 in caveolae of alveolar type I cells to trigger ATP release and paracrine stimulation of surfactant secretion from alveolar type II cells. FASEB J 2020; 34:12785-12804. [PMID: 32744386 DOI: 10.1096/fj.202000613rrr] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/14/2020] [Accepted: 07/16/2020] [Indexed: 12/12/2022]
Abstract
Secretion of pulmonary surfactant in the alveoli of the lungs is essential to maintain lung function. Stretching of alveoli during lung inflation is the main trigger for surfactant secretion. Yet, the molecular mechanisms how mechanical distension of alveoli results in surfactant secretion are still elusive. The alveolar epithelium consists of alveolar epithelial type I (ATI) and surfactant secreting type II (ATII) cells. ATI, but not ATII cells, express caveolae, small plasma membrane invaginations that can respond to plasma membrane stresses and serve mechanotransductive roles. Within this study, we investigated the role of caveolae as mechanosensors in the alveolus. We generated a human caveolin-1 knockout ATI cell (hAELVicav-/- ) using CRISPR/Cas9. Wildtype (hAELViwt ) and hAELVicav-/- cells grown on flexible membranes responded to increasing stretch amplitudes with rises in intracellular Ca2+ . The response was less frequent and started at higher stretch amplitudes in hAELVicav-/- cells. Stretch-induced Ca2+ -signals depended on Ca2+ -entry via piezo1 channels, localized within caveolae in hAELViwt and primary ATI cells. Ca2+ -entry via piezo1 activated pannexin-1 hemichannels resulting in ATP release from ATI cells. ATP release was reduced in hAELVicav-/- cells. In co-cultures resembling the alveolar epithelium, released ATP stimulated Ca2+ signals and surfactant secretion from neighboring ATII cells when co-cultured with hAELViwt but not hAELVicav-/- cells. In summary, we propose that caveolae in ATI cells are mechanosensors within alveoli regulating stretch-induced surfactant secretion from ATII cells.
Collapse
Affiliation(s)
- Kathrin Diem
- Institute of General Physiology, Ulm University, Ulm, Germany
| | - Michael Fauler
- Institute of General Physiology, Ulm University, Ulm, Germany
| | - Giorgio Fois
- Institute of General Physiology, Ulm University, Ulm, Germany
| | - Andreas Hellmann
- Institute of Analytical and Bioanalytical Chemistry, Ulm University, Ulm, Germany
| | - Natalie Winokurow
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm, Germany
| | - Stefan Schumacher
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm, Germany
| | - Christine Kranz
- Institute of Analytical and Bioanalytical Chemistry, Ulm University, Ulm, Germany
| | - Manfred Frick
- Institute of General Physiology, Ulm University, Ulm, Germany
| |
Collapse
|
18
|
Teo JL, Gomez GA, Weeratunga S, Davies EM, Noordstra I, Budnar S, Katsuno-Kambe H, McGrath MJ, Verma S, Tomatis V, Acharya BR, Balasubramaniam L, Templin RM, McMahon KA, Lee YS, Ju RJ, Stebhens SJ, Ladoux B, Mitchell CA, Collins BM, Parton RG, Yap AS. Caveolae Control Contractile Tension for Epithelia to Eliminate Tumor Cells. Dev Cell 2020; 54:75-91.e7. [PMID: 32485139 DOI: 10.1016/j.devcel.2020.05.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 03/17/2020] [Accepted: 05/01/2020] [Indexed: 01/24/2023]
Abstract
Epithelia are active materials where mechanical tension governs morphogenesis and homeostasis. But how that tension is regulated remains incompletely understood. We now report that caveolae control epithelial tension and show that this is necessary for oncogene-transfected cells to be eliminated by apical extrusion. Depletion of caveolin-1 (CAV1) increased steady-state tensile stresses in epithelial monolayers. As a result, loss of CAV1 in the epithelial cells surrounding oncogene-expressing cells prevented their apical extrusion. Epithelial tension in CAV1-depleted monolayers was increased by cortical contractility at adherens junctions. This reflected a signaling pathway, where elevated levels of phosphoinositide-4,5-bisphosphate (PtdIns(4,5)P2) recruited the formin, FMNL2, to promote F-actin bundling. Steady-state monolayer tension and oncogenic extrusion were restored to CAV1-depleted monolayers when tension was corrected by depleting FMNL2, blocking PtdIns(4,5)P2, or disabling the interaction between FMNL2 and PtdIns(4,5)P2. Thus, caveolae can regulate active mechanical tension for epithelial homeostasis by controlling lipid signaling to the actin cytoskeleton.
Collapse
Affiliation(s)
- Jessica L Teo
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Guillermo A Gomez
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia; Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA 5000, Australia
| | - Saroja Weeratunga
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Elizabeth M Davies
- Cancer Program, Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Ivar Noordstra
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Srikanth Budnar
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Hiroko Katsuno-Kambe
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Meagan J McGrath
- Cancer Program, Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Suzie Verma
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Vanesa Tomatis
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Bipul R Acharya
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | | | - Rachel M Templin
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Kerrie-Ann McMahon
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Yoke Seng Lee
- Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Brisbane, QLD 4102, Australia
| | - Robert J Ju
- The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba, Brisbane, QLD 4102, Australia
| | - Samantha J Stebhens
- The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba, Brisbane, QLD 4102, Australia
| | - Benoit Ladoux
- Institut Jacques Monod, Université de Paris, CNRS UMR 7592, 75013 Paris, France
| | - Christina A Mitchell
- Cancer Program, Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | - Brett M Collins
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Robert G Parton
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia; Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.
| | - Alpha S Yap
- Division of Cell and Developmental Biology, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.
| |
Collapse
|
19
|
Ohta K, Matsumoto Y, Nishio M. Inhibition of Cavin3 Degradation by the Human Parainfluenza Virus Type 2 V Protein Is Important for Efficient Viral Growth. Front Microbiol 2020; 11:803. [PMID: 32425917 PMCID: PMC7203785 DOI: 10.3389/fmicb.2020.00803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 04/03/2020] [Indexed: 01/01/2023] Open
Abstract
Cavin proteins have important roles in the formation of caveolae in lipid raft microdomains. Pulse-chase experiments of cells infected with human parainfluenza virus type 2 (hPIV-2) showed decreased proteasomal degradation of Cavin3. Overexpression of hPIV-2 V protein alone was sufficient to inhibit Cavin3 degradation. Immunoprecipitation analysis revealed that V protein bound to Cavin3. Trp residues within C-terminal region of V protein, as well as the N-terminal region of Cavin3, are important for V–Cavin3 interaction. Cavin3 knockdown suppressed hPIV-2 growth without affecting its entry, replication, transcription, or translation. Higher amounts of Cavin3 were observed in V protein-overexpressing cells than in control cells in lipid raft microdomains. Our data collectively suggest that hPIV-2 V protein binds to and stabilizes Cavin3, which in turn facilitates assembly and budding of hPIV-2 in lipid raft microdomains.
Collapse
Affiliation(s)
- Keisuke Ohta
- Department of Microbiology, School of Medicine, Wakayama Medical University, Wakayama, Japan
| | - Yusuke Matsumoto
- Department of Microbiology, School of Medicine, Wakayama Medical University, Wakayama, Japan
| | - Machiko Nishio
- Department of Microbiology, School of Medicine, Wakayama Medical University, Wakayama, Japan
| |
Collapse
|
20
|
Hoa Chung L, Qi Y. Lipodystrophy - A Rare Condition with Serious Metabolic Abnormalities. Rare Dis 2020. [DOI: 10.5772/intechopen.88667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
|
21
|
Fernandes IPG, Oliveira-Brett AM. Caveolin proteins electrochemical oxidation and interaction with cholesterol. Bioelectrochemistry 2020; 133:107451. [PMID: 32109845 DOI: 10.1016/j.bioelechem.2019.107451] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/19/2019] [Accepted: 12/19/2019] [Indexed: 12/17/2022]
Abstract
Caveolae consist in lipid raft domains composed of caveolin proteins, cholesterol, glycosphingolipids, and GPI-anchored proteins. Caveolin proteins present three different types, caveolin 1 (CAV-1), caveolin 2 (CAV-2) and caveolin 3 (CAV-3), with a very similar structure and amino acid composition. The native caveolin proteins oxidation mechanism was investigated for the first time, at a glassy carbon electrode, using cyclic, square wave and differential pulse voltammetry. The three native caveolin proteins oxidation mechanism presented only one tyrosine and tryptophan amino acid residues oxidation peak. Denatured caveolin proteins presented also the tyrosine, tryptophan and cysteine amino acid residues oxidation peaks. The reverse cholesterol transport is related to caveolae and caveolin proteins, and CAV-1 is directly connected to cholesterol transport. The influence of cholesterol on the three caveolin proteins electrochemical behaviour was evaluated. In the absence and in the presence of cholesterol, significant differences in the CAV-1 oxidation peak current were observed.
Collapse
Affiliation(s)
- Isabel P G Fernandes
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Ana Maria Oliveira-Brett
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal.
| |
Collapse
|
22
|
The role of membrane-shaping BAR domain proteins in caveolar invagination: from mechanistic insights to pathophysiological consequences. Biochem Soc Trans 2020; 48:137-146. [DOI: 10.1042/bst20190377] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/28/2020] [Accepted: 02/04/2020] [Indexed: 01/25/2023]
Abstract
The formation of caveolae, bulb-shaped plasma membrane invaginations, requires the coordinated action of distinct lipid-interacting and -shaping proteins. The interdependence of caveolar structure and function has evoked substantial scientific interest given the association of human diseases with caveolar dysfunction. Model systems deficient of core components of caveolae, caveolins or cavins, did not allow for an explicit attribution of observed functional defects to the requirement of caveolar invagination as they lack both invaginated caveolae and caveolin proteins. Knockdown studies in cultured cells and recent knockout studies in mice identified an additional family of membrane-shaping proteins crucial for caveolar formation, syndapins (PACSINs) — BAR domain superfamily proteins characterized by crescent-shaped membrane binding interfaces recognizing and inducing distinct curved membrane topologies. Importantly, syndapin loss-of-function resulted exclusively in impairment of caveolar invagination without a reduction in caveolin or cavin at the plasma membrane, thereby allowing the specific role of the caveolar invagination to be unveiled. Muscle cells of syndapin III KO mice showed severe reductions of caveolae reminiscent of human caveolinopathies and were more vulnerable to membrane damage upon changes in membrane tensions. Consistent with the lack of syndapin III-dependent invaginated caveolae providing mechanoprotection by releasing membrane reservoirs through caveolar flattening, physical exercise of syndapin III KO mice resulted in pathological defects reminiscent of the clinical symptoms of human myopathies associated with caveolin 3 mutation suggesting that the ability of muscular caveolae to respond to mechanical forces is a key physiological process.
Collapse
|
23
|
Wang X, Lu B, Dai C, Fu Y, Hao K, Zhao B, Chen Z, Fu L. Caveolin-1 Promotes Chemoresistance of Gastric Cancer Cells to Cisplatin by Activating WNT/β-Catenin Pathway. Front Oncol 2020; 10:46. [PMID: 32117718 PMCID: PMC7008851 DOI: 10.3389/fonc.2020.00046] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/10/2020] [Indexed: 12/13/2022] Open
Abstract
Drug resistance is a major challenge for chemotherapy in treating human gastric cancer (GC), as the underlying molecular mechanism of chemoresistance in GC remains unknown. Caveolin-1 (Cav-1) is a scaffold protein of plasma membrane caveolae that acts as a tumor modulator by interacting with several cell signals. In this research, we showed that the survival rate of GC cells to cisplatin (CDDP) increased in the presence of Cav-1. Moreover, Cav-1 overexpression inhibited cisplatin-induced apoptosis and improved the survival rate of GC cells. Cav-1 overexpression and knock-down experiments indicated that Cav-1 expression stimulated wingless-type MMTV integration site (WNTs) pathway through the phosphorylation of LRP6 and dephosphorylation of β-catenin. Cav-1 was positively associated with the increase of WNT downstream target gene Met, which led to the activation of HER2 signaling. Moreover, our results demonstrated that the expression of Cav-1 and Met were positively associated with the resistance of GC cells to cisplatin. Collectively, Cav-1 enhances the cisplatin-resistance of GC cells by activating the WNT signaling pathway and Met-HER2 crosstalk. Understanding the role of Cav-1 in the chemoresistance of GC would help to develop novel therapies for a better treatment outcome of GC patients.
Collapse
Affiliation(s)
- Xi Wang
- Key Laboratory of Digestive Pathophysiology of Zhejiang Province, The First Affiliated Hospital of Zhejiang Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Bin Lu
- Key Laboratory of Digestive Pathophysiology of Zhejiang Province, The First Affiliated Hospital of Zhejiang Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou, China.,Department of Gastroenterology, First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Chunyan Dai
- Key Laboratory of Digestive Pathophysiology of Zhejiang Province, The First Affiliated Hospital of Zhejiang Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yufei Fu
- Key Laboratory of Digestive Pathophysiology of Zhejiang Province, The First Affiliated Hospital of Zhejiang Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ke Hao
- Research Center of Blood Transfusion Medicine, Ministry of Education Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Bing Zhao
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zhe Chen
- Key Laboratory of Digestive Pathophysiology of Zhejiang Province, The First Affiliated Hospital of Zhejiang Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Li Fu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and Shenzhen University International Cancer Center, Shenzhen University School of Medicine, Shenzhen, China
| |
Collapse
|
24
|
Role of Caveolin-1 in Diabetes and Its Complications. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9761539. [PMID: 32082483 PMCID: PMC7007939 DOI: 10.1155/2020/9761539] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/10/2019] [Accepted: 12/26/2019] [Indexed: 12/25/2022]
Abstract
It is estimated that in 2017 there were 451 million people with diabetes worldwide. These figures are expected to increase to 693 million by 2045; thus, innovative preventative programs and treatments are a necessity to fight this escalating pandemic disorder. Caveolin-1 (CAV1), an integral membrane protein, is the principal component of caveolae in membranes and is involved in multiple cellular functions such as endocytosis, cholesterol homeostasis, signal transduction, and mechanoprotection. Previous studies demonstrated that CAV1 is critical for insulin receptor-mediated signaling, insulin secretion, and potentially the development of insulin resistance. Here, we summarize the recent progress on the role of CAV1 in diabetes and diabetic complications.
Collapse
|
25
|
Abstract
Caveolae are small flask- or cup-shaped invaginations of the plasma membrane found in almost all vertebrate cells. Due to their small size (50-100 nm), transmission electron microscopy (TEM) has been the method of choice to study caveolae formation and ultrastructure and, more recently, to resolve the sub-caveolar localization of its protein components using novel protein labeling methods for TEM. This chapter describes a protocol for the selective visualization of caveolae and caveolar proteins by TEM, 3D tomography, and correlative light and electron microscopy (CLEM) using the peroxidase APEX2.
Collapse
Affiliation(s)
- Alexander Ludwig
- School of Biological Sciences, NTU Institute of Structural Biology, Nanyang Technological University, Singapore, Singapore.
| |
Collapse
|
26
|
Zimnicka AM, Chen Z, Toth PT, Minshall RD. Live-Cell FRET Imaging of Phosphorylation-Dependent Caveolin-1 Switch. Methods Mol Biol 2020; 2169:71-80. [PMID: 32548820 PMCID: PMC9828887 DOI: 10.1007/978-1-0716-0732-9_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The detection of dynamic conformational changes in proteins in live cells is challenging. Live-cell FRET (Förster Resonance Energy Transfer) is an example of a noninvasive technique that can be used to achieve this goal at nanometer resolution. FRET-based assays are dependent on the presence of fluorescent probes, such as CFP- and YFP-conjugated protein pairs. Here, we describe an experimental protocol in which live-cell FRET was used to measure conformational changes in caveolin-1 (Cav-1) oligomers on the surface of plasmalemma vesicles, or caveolae.
Collapse
Affiliation(s)
- Adriana M Zimnicka
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA
| | - Zhenlong Chen
- Department of and Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
| | - Peter T Toth
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA
- Research Resources Center Fluorescence Imaging Core, University of Illinois at Chicago, Chicago, IL, USA
| | - Richard D Minshall
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA.
- Department of and Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA.
| |
Collapse
|
27
|
Francia V, Reker-Smit C, Boel G, Salvati A. Limits and challenges in using transport inhibitors to characterize how nano-sized drug carriers enter cells. Nanomedicine (Lond) 2019; 14:1533-1549. [PMID: 31208280 DOI: 10.2217/nnm-2018-0446] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Aim: In this work we illustrate limits and challenges associated with the use of pharmacological inhibitors to study how nanomedicines enter cells and show how such limits can be overcome. Materials & methods: We selected a panel of six common pharmacological inhibitors and a model nanoparticle-cell system. We tested eventual toxicity by measuring cell viability. We confirmed drug efficacy by measuring the uptake of control markers for the pathways involved by flow cytometry and fluorescence microscopy. Results & conclusion: We show how to optimize the use of pharmacological inhibitors and interpret the results generated. Furthermore, we demonstrate that some inhibitors cannot be used for nanomedicine studies because they lose their efficacy when serum is added, as required for nanoparticle exposure to cells.
Collapse
Affiliation(s)
- Valentina Francia
- Department of Pharmacokinetics, Toxicology & Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713AV Groningen, The Netherlands
| | - Catharina Reker-Smit
- Department of Pharmacokinetics, Toxicology & Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713AV Groningen, The Netherlands
| | - Guido Boel
- Department of Pharmacokinetics, Toxicology & Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713AV Groningen, The Netherlands
| | - Anna Salvati
- Department of Pharmacokinetics, Toxicology & Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713AV Groningen, The Netherlands
| |
Collapse
|
28
|
Membrane Curvature and Tension Control the Formation and Collapse of Caveolar Superstructures. Dev Cell 2019; 48:523-538.e4. [DOI: 10.1016/j.devcel.2018.12.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 07/24/2018] [Accepted: 12/14/2018] [Indexed: 01/13/2023]
|
29
|
van der Wijk AE, Wisniewska-Kruk J, Vogels IMC, van Veen HA, Ip WF, van der Wel NN, van Noorden CJF, Schlingemann RO, Klaassen I. Expression patterns of endothelial permeability pathways in the development of the blood-retinal barrier in mice. FASEB J 2019; 33:5320-5333. [PMID: 30698992 PMCID: PMC6436651 DOI: 10.1096/fj.201801499rrr] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Insight into the molecular and cellular processes in blood-retinal barrier (BRB) development, including the contribution of paracellular and transcellular pathways, is still incomplete but may help to understand the inverse process of BRB loss in pathologic eye conditions. In this comprehensive observational study, we describe in detail the formation of the BRB at the molecular level in physiologic conditions, using mice from postnatal day (P)3 to P25. Our data indicate that immature blood vessels already have tight junctions at P5, before the formation of a functional BRB. Expression of the endothelial cell-specific protein plasmalemma vesicle-associated protein (PLVAP), which is known to be involved in transcellular transport and associated with BRB permeability, decreased during development and was absent when a functional barrier was formed. Moreover, we show that PLVAP deficiency causes a transient delay in retinal vascular development and changes in mRNA expression levels of endothelial permeability pathway proteins.-Van der Wijk, A.-E., Wisniewska-Kruk, J., Vogels, I. M. C., van Veen, H. A., Ip, W. F., van der Wel, N. N., van Noorden, C. J. F., Schlingemann, R. O., Klaassen, I. Expression patterns of endothelial permeability pathways in the development of the blood-retinal barrier in mice.
Collapse
Affiliation(s)
- Anne-Eva van der Wijk
- Departments of Ophthalmology and Medical Biology, Amsterdam UMC, Ocular Angiogenesis Group, Amsterdam Cardiovascular Sciences, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands
| | - Joanna Wisniewska-Kruk
- Departments of Ophthalmology and Medical Biology, Amsterdam UMC, Ocular Angiogenesis Group, Amsterdam Cardiovascular Sciences, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands
| | - Ilse M C Vogels
- Departments of Ophthalmology and Medical Biology, Amsterdam UMC, Ocular Angiogenesis Group, Amsterdam Cardiovascular Sciences, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands
| | - Henk A van Veen
- Department of Medical Biology, Amsterdam UMC, Electron Microscopy Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands
| | - Wing Fung Ip
- Departments of Ophthalmology and Medical Biology, Amsterdam UMC, Ocular Angiogenesis Group, Amsterdam Cardiovascular Sciences, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands
| | - Nicole N van der Wel
- Department of Medical Biology, Amsterdam UMC, Electron Microscopy Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands
| | - Cornelis J F van Noorden
- Departments of Ophthalmology and Medical Biology, Amsterdam UMC, Ocular Angiogenesis Group, Amsterdam Cardiovascular Sciences, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands.,Department of Medical Biology, Amsterdam UMC, Cellular Imaging Core Facility, University of Amsterdam, Amsterdam, The Netherlands.,Department of Genetic Toxicology and Tumor Biology, National Institute of Biology, Ljubljana, Slovenia; and
| | - Reinier O Schlingemann
- Departments of Ophthalmology and Medical Biology, Amsterdam UMC, Ocular Angiogenesis Group, Amsterdam Cardiovascular Sciences, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands.,Department of Ophthalmology, Jules Gonin Eye Hospital, University of Lausanne, Lausanne, Switzerland
| | - Ingeborg Klaassen
- Departments of Ophthalmology and Medical Biology, Amsterdam UMC, Ocular Angiogenesis Group, Amsterdam Cardiovascular Sciences, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
30
|
Chen W, Cheng X, Wang X, Wang J, Wen X, Xie C, Liao C. Clinical implications of hypoxia-inducible factor-1α and caveolin-1 overexpression in isocitrate dehydrogenase-wild type glioblastoma multiforme. Oncol Lett 2019; 17:2867-2873. [PMID: 30854062 PMCID: PMC6365898 DOI: 10.3892/ol.2019.9929] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 12/06/2018] [Indexed: 12/18/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common type of primary brain tumour in adults, and presents a very low survival rate. Isocitrate dehydrogenase (IDH)1/2 mutations have been found in ~12% of glioblastomas and are associated with long-term GBM survival. However, the risk factors that influence the prognosis of IDH-wild type GBM remain unclear. Hypoxia-inducible factor (HIF)-1α, an important oxygen-regulated transcription factor, has been demonstrated to serve a crucial role in tumour development and to be associated with a poor prognosis. In addition, caveolin-1 (CAV1) is a plasma membrane organizing protein, the expression of which can also be regulated by a hypoxic microenvironment. The present study therefore aimed to examine the expression levels of HIF-1α and CAV1, and their association with GBM prognosis. Reverse transcription-quantitative polymerase chain reaction and western blotting were performed to analyse the expression levels of HIF-1α and CAV1 in paired GBM tumour and adjacent non-tumour tissues. Immunohistochemistry was used to analyse the expression of the two proteins in paraffin-embedded tissues obtained from 42 patients with IDH-wild type GBM. Statistical analyses were performed to examine the correlation between HIF-1α and CAV1 expression and patient prognosis. The results revealed hat the expression levels of HIF-1α and CAV1 were upregulated in IDH-wild type GBM tissues compared to their paired non-tumour tissues (P<0.001). The expression of CAV1 was significantly correlated with high HIF-1α expression (P<0.01). In addition, overexpression of HIF-1α and CAV1 was markedly associated with a poor prognosis (P<0.001). In conclusion, HIF-1α and CAV1 may represent potential biomarkers for IDH-wild type GBM prognosis and potential targets for the development of therapies extending GBM survival.
Collapse
Affiliation(s)
- Wenli Chen
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Xing Cheng
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Xiaobo Wang
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Jinshan Wang
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Xiaoling Wen
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Chaofan Xie
- Department of Spine Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Chuangxin Liao
- Department of Neurosurgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| |
Collapse
|
31
|
Mendoza-Topaz C, Yeow I, Riento K, Nichols BJ. BioID identifies proteins involved in the cell biology of caveolae. PLoS One 2018; 13:e0209856. [PMID: 30589899 PMCID: PMC6307745 DOI: 10.1371/journal.pone.0209856] [Citation(s) in RCA: 5] [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: 09/14/2018] [Accepted: 12/12/2018] [Indexed: 01/20/2023] Open
Abstract
The mechanisms controlling the abundance and sub-cellular distribution of caveolae are not well described. A first step towards determining such mechanisms would be identification of relevant proteins that interact with known components of caveolae. Here, we applied proximity biotinylation (BioID) to identify a list of proteins that may interact with the caveolar protein cavin1. Screening of these candidates using siRNA to reduce their expression revealed that one of them, CSDE1, regulates the levels of mRNAs and protein expression for multiple components of caveolae. A second candidate, CD2AP, co-precipitated with cavin1. Caveolar proteins were observed in characteristic and previously un-described linear arrays adjacent to cell-cell junctions in both MDCK cells, and in HeLa cells overexpressing an active form of the small GTPase Rac1. CD2AP was required for the recruitment of caveolar proteins to these linear arrays. We conclude that BioID will be useful in identification of new proteins involved in the cell biology of caveolae, and that interaction between CD2AP and cavin1 may have an important role in regulating the sub-cellular distribution of caveolae.
Collapse
Affiliation(s)
| | - I. Yeow
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
| | - K. Riento
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
| | - B. J. Nichols
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
- * E-mail:
| |
Collapse
|
32
|
Wei Z, Liu T, Lei J, Wu Y, Wang S, Liao K. Fam198a, a member of secreted kinase, secrets through caveolae biogenesis pathway. Acta Biochim Biophys Sin (Shanghai) 2018; 50:968-975. [PMID: 30188967 DOI: 10.1093/abbs/gmy105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Indexed: 01/21/2023] Open
Abstract
Fam198a is a member of four-jointed protein kinases, a secreted protein kinase family. It was identified as a caveolae-associated protein and colocalized with cavin-1 and caveolin-1 in both tissues and cells. The newly synthesized Fam198a precursor in endoplasmic reticulum (ER) was transported by caveolae biogenesis vesicles to Golgi apparatus in which it was proteolytically cleaved into the secreted mature form. The amino acid mutation analysis identified Arg 120 and 437 as the proteolytic sites in Fam198a precursor during maturation. In mouse embryo fibroblasts (MEFs) obtained from cavin-1-/- or caveolin-1-/- mice, Fam198a precursor was retained in ER and no mature Fam198a could be formed in these cells. Ectopic expression of exogenous cavin-1 in cavin-1-/- MEFs restored the blocked Fam198a post-translational process and secretion. Cavin-1 was also required for Fam198a secretion after its maturation in Golgi apparatus. Ectopic expression of cavin-1 in A549 cells restored the blocked Fam198a secretion. These results suggest that protein secretion is an important function for caveolae biogenesis pathway and the disruption of caveolae system will affect those functions played by the secreted proteins.
Collapse
Affiliation(s)
- Zhuang Wei
- Key Laboratory of Systems Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Tao Liu
- Key Laboratory of Systems Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Jigang Lei
- Key Laboratory of Systems Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Yuan Wu
- Key Laboratory of Systems Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Shilong Wang
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Kan Liao
- Key Laboratory of Systems Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| |
Collapse
|
33
|
Qu C, Sun J, Liu Y, Wang X, Wang L, Han C, Chen Q, Guan T, Li H, Zhang Y, Wang Y, Liu J, Zou W, Liu J. Caveolin-1 facilitated KCNA5 expression, promoting breast cancer viability. Oncol Lett 2018; 16:4829-4838. [PMID: 30250548 PMCID: PMC6144920 DOI: 10.3892/ol.2018.9261] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 04/16/2018] [Indexed: 12/17/2022] Open
Abstract
Potassium voltage-gated channel subfamily A member 5 (KCNA5) is a voltage-gated potassium channel protein encoded by the KCNA5 gene. A large number of studies have shown that KCNA5 is associated with the survival of malignant tumors, including breast cancer, but the detailed mechanism remains inconclusive. Our previous study found that KCNA5 is co-expressed with a scaffolding protein, caveolin-1 in MCF-10A-neoT non-tumorigenic epithelial cell. In the present study, KCNA5 and caveolin-1 were expressed in breast cancer tissues and cell lines. Exposing MCF-10A-neoT to 2 mM of methyl-β-cyclodextrin, an agent to disrupt caveolae and lipid rafts led to a downregulation of caveolin-1 that reduced the expression of KCNA5. Furthermore, following caveolin-1 knockdown, the expression of KCNA5 was decreased in MDA-MB-231 human breast cancer and MCF-10A-neoT non-tumorigenic epithelial cell lines. In subsequent experiments, the MTT assay showed that increased caveolin-1 and KCNA5 expression promoted the survival of MCF-7 human breast cancer cells, but cell survival was not affected following KCNA5 overexpression alone. Using small interfering RNA technology, KCNA5-silenced MCF-10A-neoT cells were established and a decreased level of phosphorylated-AKT serine/threonine kinase (AKT) was observed in the cells compared with the parental cells. Overall, these results suggested that caveolin-1 facilitated KCNA5 expression and may be associated with AKT activation.
Collapse
Affiliation(s)
- Chao Qu
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China.,Centre for Regenerative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116085, P.R. China.,No. 210 Hospital of Chinese People's Liberation Army, Dalian, Liaoning 116021, P.R. China
| | - Jia Sun
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China
| | - Ying Liu
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China.,Institute for Translational Medicine, Qingdao University, Qingdao, Shandong 266021, P.R. China
| | - Xiaobo Wang
- No. 210 Hospital of Chinese People's Liberation Army, Dalian, Liaoning 116021, P.R. China
| | - Lifen Wang
- The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Chao Han
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China.,Centre for Regenerative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116085, P.R. China
| | - Qian Chen
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China
| | - Tianhui Guan
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China
| | - Hongyan Li
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China
| | - Yejun Zhang
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China
| | - Yang Wang
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China.,Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE 68178, USA
| | - Jia Liu
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China
| | - Wei Zou
- College of Life Science, Liaoning Normal University, Dalian, Liaoning 116029, P.R. China
| | - Jing Liu
- Centre for Regenerative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116085, P.R. China
| |
Collapse
|
34
|
Hanyaloglu AC. Advances in Membrane Trafficking and Endosomal Signaling of G Protein-Coupled Receptors. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 339:93-131. [PMID: 29776606 DOI: 10.1016/bs.ircmb.2018.03.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The integration of GPCR signaling with membrane trafficking, as a single orchestrated system, is a theme increasingly evident with the growing reports of GPCR endosomal signaling. Once viewed as a mechanism to regulate cell surface heterotrimeric G protein signaling, the endocytic trafficking system is complex, highly compartmentalized, yet deeply interconnected with cell signaling. The organization of receptors into distinct plasma membrane signalosomes, biochemically distinct endosomal populations, endosomal microdomains, and its communication with distinct subcellular organelles such as the Golgi provides multiple unique signaling platforms that are critical for specifying receptor function physiologically and pathophysiologically. In this chapter I discuss our emerging understanding in the endocytic trafficking systems employed by GPCRs and their novel roles in spatial control of signaling. Given the extensive roles that GPCRs play in vivo, these evolving models are starting to provide mechanistic understanding of distinct diseases and provide novel therapeutic avenues that are proving to be viable targets.
Collapse
Affiliation(s)
- Aylin C Hanyaloglu
- Institute of Reproductive and Developmental Biology, Department of Surgery and Cancer, Imperial College London, London, United Kingdom.
| |
Collapse
|
35
|
Chen Z, D S Oliveira S, Zimnicka AM, Jiang Y, Sharma T, Chen S, Lazarov O, Bonini MG, Haus JM, Minshall RD. Reciprocal regulation of eNOS and caveolin-1 functions in endothelial cells. Mol Biol Cell 2018; 29:1190-1202. [PMID: 29563255 PMCID: PMC5935069 DOI: 10.1091/mbc.e17-01-0049] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We hypothesized that the maintenance of vascular homeostasis is critically dependent on the expression and reciprocal regulation of caveolin-1 (Cav-1) and endothelial nitric oxide synthase (eNOS) in endothelial cells (ECs). Skeletal muscle biopsies from subjects with type 2 diabetes showed 50% less Cav-1 and eNOS than those from lean healthy controls. The Cav-1:eNOS expression ratio was 200:1 in primary culture human ECs. Cav-1 small interfering RNA (siRNA) reduced eNOS protein and gene expression in association with a twofold increase in eNOS phosphorylation and nitrate production per molecule of eNOS, which was reversed in cells overexpressing Adv-Cav-1-GFP. Upon addition of the Ca2+ ionophore A23187 to activate eNOS, we observed eNOS Ser1177 phosphorylation, its translocation to β-catenin-positive cell–cell junctions, and increased colocalization of eNOS and Cav-1 within 5 min. We also observed Cav-1 S-nitrosylation and destabilization of Cav-1 oligomers in cells treated with A23187 as well as insulin or albumin, and this could be blocked by L-NAME, PP2, or eNOS siRNA. Finally, caveola-mediated endocytosis of albumin or insulin was reduced by Cav-1 or eNOS siRNA, and the effect of Cav-1 siRNA was rescued by Adv-Cav-1-GFP. Thus, Cav-1 stabilizes eNOS expression and regulates its activity, whereas eNOS-derived NO promotes caveola-mediated endocytosis.
Collapse
Affiliation(s)
- Zhenlong Chen
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612
| | - Suellen D S Oliveira
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612
| | | | - Ying Jiang
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612
| | - Tiffany Sharma
- Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| | - Stone Chen
- Whitney M. Young Magnet High School, Chicago, IL 60607
| | - Orly Lazarov
- Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL 60612
| | | | - Jacob M Haus
- Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL 60612
| | - Richard D Minshall
- Departments of aAnesthesiology, University of Illinois at Chicago, Chicago, IL 60612.,Pharmacology, University of Illinois at Chicago, Chicago, IL 60612
| |
Collapse
|
36
|
Shuvaev VV, Kiseleva RY, Arguiri E, Villa CH, Muro S, Christofidou-Solomidou M, Stan RV, Muzykantov VR. Targeting superoxide dismutase to endothelial caveolae profoundly alleviates inflammation caused by endotoxin. J Control Release 2017; 272:1-8. [PMID: 29292038 DOI: 10.1016/j.jconrel.2017.12.025] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/16/2017] [Accepted: 12/21/2017] [Indexed: 02/07/2023]
Abstract
Inflammatory mediators binding to Toll-Like receptors (TLR) induce an influx of superoxide anion in the ensuing endosomes. In endothelial cells, endosomal surplus of superoxide causes pro-inflammatory activation and TLR4 agonists act preferentially via caveolae-derived endosomes. To test the hypothesis that SOD delivery to caveolae may specifically inhibit this pathological pathway, we conjugated SOD with antibodies (Ab/SOD, size ~10nm) to plasmalemmal vesicle-associated protein (Plvap) that is specifically localized to endothelial caveolae in vivo and compared its effects to non-caveolar target CD31/PECAM-1. Plvap Ab/SOD bound to endothelial cells in culture with much lower efficacy than CD31 Ab/SOD, yet blocked the effects of LPS signaling with higher efficiency than CD31 Ab/SOD. Disruption of cholesterol-rich membrane domains by filipin inhibits Plvap Ab/SOD endocytosis and LPS signaling, implicating the caveolae-dependent pathway(s) in both processes. Both Ab/SOD conjugates targeted to Plvap and CD31 accumulated in the lungs after IV injection in mice, but the former more profoundly inhibited LPS-induced pulmonary inflammation and elevation of plasma level of interferon-beta and -gamma and interleukin-27. Taken together, these results indicate that targeted delivery of SOD to specific cellular compartments may offer effective, mechanistically precise interception of pro-inflammatory signaling mediated by reactive oxygen species.
Collapse
Affiliation(s)
- Vladimir V Shuvaev
- Department of Pharmacology, Center for Translational Targeted Therapeutics, Nanomedicine of the Institute for Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA, United States
| | - Raisa Yu Kiseleva
- Department of Pharmacology, Center for Translational Targeted Therapeutics, Nanomedicine of the Institute for Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA, United States
| | - Evguenia Arguiri
- Department of Medicine, Pulmonary, Allergy and Critical Care Division, University of Pennsylvania, Philadelphia, PA, United States
| | - Carlos H Villa
- Department of Pharmacology, Center for Translational Targeted Therapeutics, Nanomedicine of the Institute for Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA, United States
| | - Silvia Muro
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, United States
| | - Melpo Christofidou-Solomidou
- Department of Medicine, Pulmonary, Allergy and Critical Care Division, University of Pennsylvania, Philadelphia, PA, United States
| | - Radu V Stan
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Vladimir R Muzykantov
- Department of Pharmacology, Center for Translational Targeted Therapeutics, Nanomedicine of the Institute for Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA, United States.
| |
Collapse
|
37
|
Seemann E, Sun M, Krueger S, Tröger J, Hou W, Haag N, Schüler S, Westermann M, Huebner CA, Romeike B, Kessels MM, Qualmann B. Deciphering caveolar functions by syndapin III KO-mediated impairment of caveolar invagination. eLife 2017; 6. [PMID: 29202928 PMCID: PMC5716666 DOI: 10.7554/elife.29854] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 11/14/2017] [Indexed: 12/11/2022] Open
Abstract
Several human diseases are associated with a lack of caveolae. Yet, the functions of caveolae and the molecular mechanisms critical for shaping them still are debated. We show that muscle cells of syndapin III KO mice show severe reductions of caveolae reminiscent of human caveolinopathies. Yet, different from other mouse models, the levels of the plasma membrane-associated caveolar coat proteins caveolin3 and cavin1 were both not reduced upon syndapin III KO. This allowed for dissecting bona fide caveolar functions from those supported by mere caveolin presence and also demonstrated that neither caveolin3 nor caveolin3 and cavin1 are sufficient to form caveolae. The membrane-shaping protein syndapin III is crucial for caveolar invagination and KO rendered the cells sensitive to membrane tensions. Consistent with this physiological role of caveolae in counterpoising membrane tensions, syndapin III KO skeletal muscles showed pathological parameters upon physical exercise that are also found in CAVEOLIN3 mutation-associated muscle diseases.
Collapse
Affiliation(s)
- Eric Seemann
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Minxuan Sun
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Sarah Krueger
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Jessica Tröger
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Wenya Hou
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Natja Haag
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Susann Schüler
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Martin Westermann
- Electron Microscopy Center, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Christian A Huebner
- Institute for Human Genetics, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Bernd Romeike
- Institute of Pathology, Division of Neuropathology, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Michael M Kessels
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| | - Britta Qualmann
- Institute for Biochemistry I, Jena University Hospital - Friedrich Schiller University Jena, Jena, Germany
| |
Collapse
|
38
|
Garcia J, Bagwell J, Njaine B, Norman J, Levic DS, Wopat S, Miller SE, Liu X, Locasale JW, Stainier DYR, Bagnat M. Sheath Cell Invasion and Trans-differentiation Repair Mechanical Damage Caused by Loss of Caveolae in the Zebrafish Notochord. Curr Biol 2017. [PMID: 28648824 DOI: 10.1016/j.cub.2017.05.035] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The notochord, a conserved axial structure required for embryonic axis elongation and spine development, consists of giant vacuolated cells surrounded by an epithelial sheath [1-3]. During morphogenesis, vacuolated cells maintain their structural integrity despite being under constant mechanical stress [4]. We hypothesized that the high density of caveolae present in vacuolated cells [5, 6] could buffer mechanical tension. Caveolae are 50- to 80-nm membrane invaginations lined by cage-like polygonal structures [7, 8] formed by caveolin 1 (Cav1) or Cav3 and one of the cavin proteins [6, 9-11]. Recent in vitro work has shown that plasma membrane caveolae constitute a membrane reservoir that can buffer mechanical stresses such as stretching or osmotic swelling [12]. Moreover, mechanical integrity of vascular and muscle cells is partly dependent on caveolae [13-15]. However, the in vivo mechano-protective roles of caveolae have only begun to be explored. Using zebrafish mutants for cav1, cav3, and cavin1b, we show that caveolae are essential for notochord integrity. Upon loss of caveola function, vacuolated cells collapse at discrete positions under the mechanical strain of locomotion. Then, sheath cells invade the inner notochord and differentiate into vacuolated cells, thereby restoring notochord function and allowing normal spine development. Our data further indicate that nucleotides released by dying vacuolated cells promote sheath cell vacuolization and trans-differentiation. This work reveals a novel structural role for caveolae in vertebrates and provides unique insights into the mechanisms that safeguard notochord and spine development.
Collapse
Affiliation(s)
- Jamie Garcia
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Jennifer Bagwell
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Brian Njaine
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - James Norman
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Daniel S Levic
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Susan Wopat
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Sara E Miller
- Department of Pathology, Duke University, Durham, NC 27710, USA
| | - Xiaojing Liu
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC 27710, USA
| | - Jason W Locasale
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC 27710, USA
| | - Didier Y R Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Michel Bagnat
- Department of Cell Biology, Duke University, Durham, NC 27710, USA.
| |
Collapse
|
39
|
Lee CY, Lai TY, Tsai MK, Chang YC, Ho YH, Yu IS, Yeh TW, Chou CC, Lin YS, Lawrence T, Hsu LC. The ubiquitin ligase ZNRF1 promotes caveolin-1 ubiquitination and degradation to modulate inflammation. Nat Commun 2017; 8:15502. [PMID: 28593998 PMCID: PMC5472178 DOI: 10.1038/ncomms15502] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 04/05/2017] [Indexed: 02/07/2023] Open
Abstract
Caveolin-1 (CAV1), the major constituent of caveolae, plays a pivotal role in various cellular biological functions, including cancer and inflammation. The ubiquitin/proteasomal pathway is known to contribute to the regulation of CAV1 expression, but the ubiquitin ligase responsible for CAV1 protein stability remains unidentified. Here we reveal that E3 ubiquitin ligase ZNRF1 modulates CAV1 protein stability to regulate Toll-like receptor (TLR) 4-triggered immune responses. We demonstrate that ZNRF1 physically interacts with CAV1 in response to lipopolysaccharide and mediates ubiquitination and degradation of CAV1. The ZNRF1-CAV1 axis regulates Akt-GSK3β activity upon TLR4 activation, resulting in enhanced production of pro-inflammatory cytokines and inhibition of anti-inflammatory cytokine IL-10. Mice with deletion of ZNRF1 in their hematopoietic cells display increased resistance to endotoxic and polymicrobial septic shock due to attenuated inflammation. Our study defines ZNRF1 as a regulator of TLR4-induced inflammatory responses and reveals another mechanism for the regulation of TLR4 signalling through CAV1.
Collapse
Affiliation(s)
- Chih-Yuan Lee
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
- Department of Surgery, National Taiwan University Hospital, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - Ting-Yu Lai
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - Meng-Kun Tsai
- Department of Surgery, National Taiwan University Hospital, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - Yung-Chi Chang
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - Yu-Hsin Ho
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - I-Shing Yu
- Laboratory Animal Center, College of Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - Tzu-Wen Yeh
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - Chih-Chang Chou
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - You-Sheng Lin
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| | - Toby Lawrence
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, 13288 Marseille, France
| | - Li-Chung Hsu
- Institute of Molecular Medicine, National Taiwan University, No. 7 Chung San South Road, Taipei 10002, Taiwan
| |
Collapse
|
40
|
Ludwig A, Nguyen TH, Leong D, Ravi LI, Tan BH, Sandin S, Sugrue RJ. Caveolae provide a specialized membrane environment for respiratory syncytial virus assembly. J Cell Sci 2017; 130:1037-1050. [PMID: 28154158 PMCID: PMC5358342 DOI: 10.1242/jcs.198853] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/26/2017] [Indexed: 12/20/2022] Open
Abstract
Respiratory syncytial virus (RSV) is an enveloped virus that assembles into filamentous virus particles on the surface of infected cells. Morphogenesis of RSV is dependent upon cholesterol-rich (lipid raft) membrane microdomains, but the specific role of individual raft molecules in RSV assembly is not well defined. Here, we show that RSV morphogenesis occurs within caveolar membranes and that both caveolin-1 and cavin-1 (also known as PTRF), the two major structural and functional components of caveolae, are actively recruited to and incorporated into the RSV envelope. The recruitment of caveolae occurred just prior to the initiation of RSV filament assembly, and was dependent upon an intact actin network as well as a direct physical interaction between caveolin-1 and the viral G protein. Moreover, cavin-1 protein levels were significantly increased in RSV-infected cells, leading to a virus-induced change in the stoichiometry and biophysical properties of the caveolar coat complex. Our data indicate that RSV exploits caveolae for its assembly, and we propose that the incorporation of caveolae into the virus contributes to defining the biological properties of the RSV envelope.
Collapse
Affiliation(s)
- Alexander Ludwig
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Tra Huong Nguyen
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Daniel Leong
- Detection and Diagnostics Laboratory, DSO National Laboratories, 27 Medical Drive, Singapore 117510
| | - Laxmi Iyer Ravi
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Boon Huan Tan
- Detection and Diagnostics Laboratory, DSO National Laboratories, 27 Medical Drive, Singapore 117510
| | - Sara Sandin
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Richard J Sugrue
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| |
Collapse
|
41
|
Gaibelet G, Tercé F, Allart S, Lebrun C, Collet X, Jamin N, Orlowski S. Fluorescent probes for detecting cholesterol-rich ordered membrane microdomains: entangled relationships between structural analogies in the membrane and functional homologies in the cell. AIMS BIOPHYSICS 2017. [DOI: 10.3934/biophy.2017.1.121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
42
|
Basagiannis D, Zografou S, Murphy C, Fotsis T, Morbidelli L, Ziche M, Bleck C, Mercer J, Christoforidis S. VEGF induces signalling and angiogenesis by directing VEGFR2 internalisation through macropinocytosis. J Cell Sci 2016; 129:4091-4104. [PMID: 27656109 DOI: 10.1242/jcs.188219] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 09/13/2016] [Indexed: 01/15/2023] Open
Abstract
Endocytosis plays a crucial role in receptor signalling. VEGFR2 (also known as KDR) and its ligand VEGFA are fundamental in neovascularisation. However, our understanding of the role of endocytosis in VEGFR2 signalling remains limited. Despite the existence of diverse internalisation routes, the only known endocytic pathway for VEGFR2 is the clathrin-mediated pathway. Here, we show that this pathway is the predominant internalisation route for VEGFR2 only in the absence of ligand. Intriguingly, VEGFA induces a new internalisation itinerary for VEGFR2, the pathway of macropinocytosis, which becomes the prevalent endocytic route for the receptor in the presence of ligand, whereas the contribution of the clathrin-mediated route becomes minor. Macropinocytic internalisation of VEGFR2, which mechanistically is mediated through the small GTPase CDC42, takes place through macropinosomes generated at ruffling areas of the membrane. Interestingly, macropinocytosis plays a crucial role in VEGFA-induced signalling, endothelial cell functions in vitro and angiogenesis in vivo, whereas clathrin-mediated endocytosis is not essential for VEGFA signalling. These findings expand our knowledge on the endocytic pathways of VEGFR2 and suggest that VEGFA-driven internalisation of VEGFR2 through macropinocytosis is essential for endothelial cell signalling and angiogenesis.
Collapse
Affiliation(s)
- Dimitris Basagiannis
- Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, Ioannina 45110, Greece.,Laboratory of Biological Chemistry, Department of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Sofia Zografou
- Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, Ioannina 45110, Greece
| | - Carol Murphy
- Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, Ioannina 45110, Greece.,School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Theodore Fotsis
- Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, Ioannina 45110, Greece.,Laboratory of Biological Chemistry, Department of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Lucia Morbidelli
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, Siena 53100, Italy
| | - Marina Ziche
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, Siena 53100, Italy
| | | | - Jason Mercer
- Institute of Biochemistry, ETH, Zurich 8093, Switzerland.,MRC-Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Savvas Christoforidis
- Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, Ioannina 45110, Greece .,Laboratory of Biological Chemistry, Department of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| |
Collapse
|
43
|
Taniguchi T, Maruyama N, Ogata T, Kasahara T, Nakanishi N, Miyagawa K, Naito D, Hamaoka T, Nishi M, Matoba S, Ueyama T. PTRF/Cavin-1 Deficiency Causes Cardiac Dysfunction Accompanied by Cardiomyocyte Hypertrophy and Cardiac Fibrosis. PLoS One 2016; 11:e0162513. [PMID: 27612189 PMCID: PMC5017623 DOI: 10.1371/journal.pone.0162513] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 08/05/2016] [Indexed: 12/16/2022] Open
Abstract
Mutations in the PTRF/Cavin-1 gene cause congenital generalized lipodystrophy type 4 (CGL4) associated with myopathy. Additionally, long-QT syndrome and fatal cardiac arrhythmia are observed in patients with CGL4 who have homozygous PTRF/Cavin-1 mutations. PTRF/Cavin-1 deficiency shows reductions of caveolae and caveolin-3 (Cav3) protein expression in skeletal muscle, and Cav3 deficiency in the heart causes cardiac hypertrophy with loss of caveolae. However, it remains unknown how loss of PTRF/Cavin-1 affects cardiac morphology and function. Here, we present a characterization of the hearts of PTRF/Cavin-1-null (PTRF−/−) mice. Electron microscopy revealed the reduction of caveolae in cardiomyocytes of PTRF−/− mice. PTRF−/− mice at 16 weeks of age developed a progressive cardiomyopathic phenotype with wall thickening of left ventricles and reduced fractional shortening evaluated by echocardiography. Electrocardiography revealed that PTRF−/− mice at 24 weeks of age had low voltages and wide QRS complexes in limb leads. Histological analysis showed cardiomyocyte hypertrophy accompanied by progressive interstitial/perivascular fibrosis. Hypertrophy-related fetal gene expression was also induced in PTRF−/− hearts. Western blotting analysis and quantitative RT-PCR revealed that Cav3 expression was suppressed in PTRF−/− hearts compared with that in wild-type (WT) ones. ERK1/2 was activated in PTRF−/− hearts compared with that in WT ones. These results suggest that loss of PTRF/Cavin-1 protein expression is sufficient to induce a molecular program leading to cardiomyocyte hypertrophy and cardiomyopathy, which is partly attributable to Cav3 reduction in the heart.
Collapse
Affiliation(s)
- Takuya Taniguchi
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Naoki Maruyama
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Takehiro Ogata
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Takeru Kasahara
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Naohiko Nakanishi
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Kotaro Miyagawa
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Daisuke Naito
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Tetsuro Hamaoka
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Masahiro Nishi
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Satoaki Matoba
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
| | - Tomomi Ueyama
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602–8566, Japan
- * E-mail:
| |
Collapse
|
44
|
Liu M, Feng LX, Sun P, Liu W, Mi T, Lei M, Wu W, Jiang B, Yang M, Hu L, Guo DA, Liu X. Knockdown of Apolipoprotein E Enhanced Sensitivity of Hep3B Cells to Cardiac Steroids via Regulating Na+/K+-ATPase Signalosome. Mol Cancer Ther 2016; 15:2955-2965. [PMID: 27507851 DOI: 10.1158/1535-7163.mct-15-0961] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 06/29/2016] [Accepted: 07/02/2016] [Indexed: 11/16/2022]
Abstract
This study compared the sensitivity of human hepatoma Hep3B, SK-HEP-1, SMMC-7721, and BEL-7402 cells to cardiac steroids, including bufalin (BF), a bufalin derivative (BF211), ouabain (OUA), and digitoxin (DIG). Hep3B cells exhibited relatively low sensitivity to cardiac steroids. Expression levels of subunits of Na+/K+-ATPase were high in Hep3B cells. However, colocalization of Na+/K+-ATPase and caveolin was nearly undetectable in Hep3B cells. By using RNA-Seq technology, we found a total of 36 genes to be differentially expressed between Hep3B cells and SK-HEP-1 cells, which are highly sensitive to cardiac steroids. Our bioinformatics analysis determined that these genes were mostly comprised of extracellular space, protein binding, and extracellular region. Among these 36 genes, apolipoprotein E (APOE) played a critical role, as knockdown APOE expression induced colocalization of Na+/K+-ATPase and caveolin and increased sensitivity of Hep3B cells to both proliferation-inhibiting and cytotoxic effects of BF or BF211. Also, the effects of BF on PI3K/AKT/GSK3β and apoptosis signal cascades were enhanced in APOE knockdown cells. The results of our study confirmed the role of Na+/K+-ATPase signalosome in cytotoxicity of cardiac steroids and suggested that APOE regulated the sensitivity of cells to cardiac steroids by affecting formation and function of Na+/K+-ATPase signalosome. In addition, intercellular interaction with high level of Na+/K+-ATPase β1 subunit may be also a factor in the low sensitivity of Hep3B cells to cardiac steroids. Mol Cancer Ther; 15(12); 2955-65. ©2016 AACR.
Collapse
Affiliation(s)
- Miao Liu
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Li-Xing Feng
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Peng Sun
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Wang Liu
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Tian Mi
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Min Lei
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Wanying Wu
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Baohong Jiang
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Min Yang
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China
| | - Lihong Hu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China.
| | - De-An Guo
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China.
| | - Xuan Liu
- Shanghai Research Center for Modernization of TCM, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, P.R. China. .,Department of Cardiology, Shanghai Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, P.R. China
| |
Collapse
|
45
|
Ludwig A, Nichols BJ, Sandin S. Architecture of the caveolar coat complex. J Cell Sci 2016; 129:3077-83. [PMID: 27369768 PMCID: PMC5004899 DOI: 10.1242/jcs.191262] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 06/27/2016] [Indexed: 12/13/2022] Open
Abstract
Caveolae are specialized membrane domains that are crucial for the correct function of endothelial cells, adipocytes and muscle cells. Caveolins and cavins are both required for caveolae formation, and assemble into a large (80S) caveolar coat complex (80S-CCC). The architecture of the 80S-CCC, however, has not been analyzed. Here, we study the 80S-CCC isolated from mammalian cells using negative stain electron microscopy and 3D cryo-electron tomography. We show that the 80S-CCC is a hollow sphere with a diameter of 50–80 nm, and so has the same size and shape as individual caveolar bulbs. This provides strong evidence that the distinctive membrane shape of caveolae is generated by the shape of the 80S-CCC itself. The particle appears to be made up of two layers, an inner coat composed of polygonal units of caveolins that form a polyhedral cage, and an outer filamentous coat composed of cavins. The data suggest that the peripheral cavin coat is aligned along the edges of the inner polyhedral cage, thereby providing a mechanism for the generation of a morphologically stable caveolar coat. Highlighted Article: This paper reports the first structural analysis of the entire caveolar protein coat isolated intact from mammalian cells, and shows that the coat is composed of two morphologically distinct layers.
Collapse
Affiliation(s)
- Alexander Ludwig
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore
| | | | - Sara Sandin
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore NTU Institute of Structural Biology, Nanyang Technological University, Experimental Medicine Building, 59 Nanyang Drive, 637551 Singapore
| |
Collapse
|
46
|
Basagiannis D, Christoforidis S. Constitutive Endocytosis of VEGFR2 Protects the Receptor against Shedding. J Biol Chem 2016; 291:16892-903. [PMID: 27298320 DOI: 10.1074/jbc.m116.730309] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Indexed: 12/19/2022] Open
Abstract
VEGFR2 plays a fundamental role in blood vessel formation and in life threatening diseases, such as cancer angiogenesis and cardiovascular disorders. Although inactive growth factor receptors are mainly localized at the plasma membrane, VEGFR2 undergoes constitutive endocytosis (in the absence of ligand) and recycling. Intriguingly, the significance of these futile transport cycles of VEGFR2 remains unclear. Here we found that, unexpectedly, the function of constitutive endocytosis of VEGFR2 is to protect the receptor against plasma membrane cleavage (shedding), thereby preserving the functional state of the receptor until the time of activation by VEGF. Inhibition of constitutive endocytosis of VEGFR2, by interference with the function of clathrin, dynamin, or Rab5, increases dramatically the cleavage/shedding of VEGFR2. Shedding of VEGFR2 produces an N-terminal soluble fragment (100 kDa, s100), which is released in the extracellular space, and a residual C-terminal part (130 kDa, p130) that remains integrated at the plasma membrane. The released soluble fragment (s100) co-immunoprecipitates with VEGF, in line with the topology of the VEGF-binding domain at the N terminus of VEGFR2. Increased shedding of VEGFR2 (via inhibition of constitutive endocytosis) results in reduced response to VEGF, consistently with the loss of the VEGF-binding domain from the membrane remnant of VEGFR2. These data suggest that constitutive internalization of VEGFR2 protects the receptor against shedding and provides evidence for an unprecedented mechanism via which endocytosis can regulate the fate and activity of growth factor receptors.
Collapse
Affiliation(s)
- Dimitris Basagiannis
- From the Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, 45110 Ioannina and the Department of Medicine, Laboratory of Biological Chemistry, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Savvas Christoforidis
- From the Institute of Molecular Biology and Biotechnology-Biomedical Research, Foundation for Research and Technology, 45110 Ioannina and the Department of Medicine, Laboratory of Biological Chemistry, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| |
Collapse
|
47
|
Radulovic M, Baqader NO, Stoeber K, Godovac-Zimmermann J. Spatial Cross-Talk between Oxidative Stress and DNA Replication in Human Fibroblasts. J Proteome Res 2016; 15:1907-38. [PMID: 27142241 DOI: 10.1021/acs.jproteome.6b00101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
MS-based proteomics has been applied to a differential network analysis of the nuclear-cytoplasmic subcellular distribution of proteins between cell-cycle arrest: (a) at the origin activation checkpoint for DNA replication, or (b) in response to oxidative stress. Significant changes were identified for 401 proteins. Cellular response combines changes in trafficking and in total abundance to vary the local compartmental abundances that are the basis of cellular response. Appreciable changes for both perturbations were observed for 245 proteins, but cross-talk between oxidative stress and DNA replication is dominated by 49 proteins that show strong changes for both. Many nuclear processes are influenced by a spatial switch involving the proteins {KPNA2, KPNB1, PCNA, PTMA, SET} and heme/iron proteins HMOX1 and FTH1. Dynamic spatial distribution data are presented for proteins involved in caveolae, extracellular matrix remodelling, TGFβ signaling, IGF pathways, emerin complexes, mitochondrial protein import complexes, spliceosomes, proteasomes, and so on. The data indicate that for spatially heterogeneous cells cross-compartmental communication is integral to their system biology, that coordinated spatial redistribution for crucial protein networks underlies many functional changes, and that information on dynamic spatial redistribution of proteins is essential to obtain comprehensive pictures of cellular function. We describe how spatial data of the type presented here can provide priorities for further investigation of crucial features of high-level spatial coordination across cells. We suggest that the present data are related to increasing indications that much of subcellular protein transport is constitutive and that perturbation of these constitutive transport processes may be related to cancer and other diseases. A quantitative, spatially resolved nucleus-cytoplasm interaction network is provided for further investigations.
Collapse
Affiliation(s)
- Marko Radulovic
- Division of Medicine, University College London, Center for Nephrology , Royal Free Campus, Rowland Hill Street, London NW3 2PF, United Kingdom.,Insitute of Oncology and Radiology , Pasterova 14, 11000 Belgrade, Serbia
| | - Noor O Baqader
- Division of Medicine, University College London, Center for Nephrology , Royal Free Campus, Rowland Hill Street, London NW3 2PF, United Kingdom
| | - Kai Stoeber
- Research Department of Pathology and UCL Cancer Institute, Rockefeller Building, University College London , University Street, London WC1E 6JJ, United Kingdom
| | - Jasminka Godovac-Zimmermann
- Division of Medicine, University College London, Center for Nephrology , Royal Free Campus, Rowland Hill Street, London NW3 2PF, United Kingdom
| |
Collapse
|
48
|
Dong X, Song Q, Zhu J, Zhao J, Liu Q, Zhang T, Long Z, Li J, Wu C, Wang Q, Hu X, Damaser M, Li L. Interaction of Caveolin-3 and HCN is involved in the pathogenesis of diabetic cystopathy. Sci Rep 2016; 6:24844. [PMID: 27122250 PMCID: PMC4848475 DOI: 10.1038/srep24844] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 04/05/2016] [Indexed: 12/26/2022] Open
Abstract
A growing body of research suggests that impaired bladder Cajal-like interstitial cells (ICCs) are a important component in the pathogenesis of diabetes-induced bladder dysfunction, although the molecular mechanisms have not been illustrated completely. The purpose of this study was to examine whether the hyperpolarization-activated cyclic nucleotide-gated (HCN) channels in ICCs-DM were responsible for the detrusor weak contractility of Diabetic cystopathy (DCP) and to study the possible mechanism of regulating the expression and function of HCN channels. HCN channels expression were decreased at the mRNA and protein levels. Forskolin (FSK), which can elevate intracellular cAMP levels, increased the density of the hyperpolarization-activated current and intracellular calcium concentration in both normal control (NC) rats and DCP rats, but the sensitivity of FSK on HCN channels was clearly down-regulated in DCP rats. The loss of caveolae and caveolin was in accordance with the decrease in HCN channels. Caveolin-3 co-localizes with and affects the expression and function of HCN. Taken together, these results indicate that the loss of caveolae and HCN channels in ICCs-DM is important in the pathogenesis of DCP. Increasing the number of caveolae to enhance the function of HCN channels may represent a viable target for the pharmacological treatment of DCP.
Collapse
Affiliation(s)
- Xingyou Dong
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Qixiang Song
- Department of Biomedical Engineering, the Cleveland Clinic, Cleveland, OH, United States of America
| | - Jingzhen Zhu
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Jiang Zhao
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Qian Liu
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Teng Zhang
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Zhou Long
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Jia Li
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Chao Wu
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Qingqing Wang
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Xiaoyan Hu
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Margot Damaser
- Department of Biomedical Engineering, the Cleveland Clinic, Cleveland, OH, United States of America
| | - Longkun Li
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| |
Collapse
|
49
|
Gilliam AJH, Smith JN, Flather D, Johnston KM, Gansmiller AM, Fishman DA, Edgar JM, Balk M, Majumdar S, Weiss GA. Affinity-Guided Design of Caveolin-1 Ligands for Deoligomerization. J Med Chem 2016; 59:4019-25. [PMID: 27010220 DOI: 10.1021/acs.jmedchem.5b01536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Caveolin-1 is a target for academic and pharmaceutical research due to its many cellular roles and associated diseases. We report peptide WL47 (1), a small, high-affinity, selective disrupter of caveolin-1 oligomers. Developed and optimized through screening and analysis of synthetic peptide libraries, ligand 1 has 7500-fold improved affinity compared to its T20 parent ligand and an 80% decrease in sequence length. Ligand 1 will permit targeted study of caveolin-1 function.
Collapse
Affiliation(s)
- Amanda J H Gilliam
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Joshua N Smith
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Dylan Flather
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Kevin M Johnston
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Andrew M Gansmiller
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Dmitry A Fishman
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Joshua M Edgar
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Mark Balk
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Sudipta Majumdar
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| | - Gregory A Weiss
- Department of Chemistry, and ‡Department of Molecular Biology and Biochemistry, University of California , Irvine, California 92697-2025, United States
| |
Collapse
|
50
|
Hypoxia regulates global membrane protein endocytosis through caveolin-1 in cancer cells. Nat Commun 2016; 7:11371. [PMID: 27094744 PMCID: PMC4842985 DOI: 10.1038/ncomms11371] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 03/18/2016] [Indexed: 01/12/2023] Open
Abstract
Hypoxia promotes tumour aggressiveness and resistance of cancers to oncological treatment. The identification of cancer cell internalizing antigens for drug targeting to the hypoxic tumour niche remains a challenge of high clinical relevance. Here we show that hypoxia down-regulates the surface proteome at the global level and, more specifically, membrane proteome internalization. We find that hypoxic down-regulation of constitutive endocytosis is HIF-independent, and involves caveolin-1-mediated inhibition of dynamin-dependent, membrane raft endocytosis. Caveolin-1 overexpression inhibits protein internalization, suggesting a general negative regulatory role of caveolin-1 in endocytosis. In contrast to this global inhibitory effect, we identify several proteins that can override caveolin-1 negative regulation, exhibiting increased internalization at hypoxia. We demonstrate antibody-mediated cytotoxin delivery and killing specifically of hypoxic cells through one of these proteins, carbonic anhydrase IX. Our data reveal that caveolin-1 modulates cell-surface proteome turnover at hypoxia with potential implications for specific targeting of the hypoxic tumour microenvironment. Hypoxia promotes tumour aggressiveness and resistance of cancers to oncological treatment. Here, the authors show that caveolin-1 can down-regulate global membrane protein endocytosis in hypoxic cells with potential implications for targeting the hypoxic 3microenvironment of aggressive tumours.
Collapse
|