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Lu X, Mei Y, Fan C, Chen P, Li X, Zeng Z, Li G, Xiong W, Xiang B, Yi M. Silencing AHNAK promotes nasopharyngeal carcinoma progression by upregulating the ANXA2 protein. Cell Oncol (Dordr) 2024; 47:833-850. [PMID: 37962808 DOI: 10.1007/s13402-023-00898-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
PURPOSE Nasopharyngeal carcinoma (NPC) is an aggressive head and neck disease with a high incidence of distant metastases. Enlargeosomes are cytoplasmic organelles marked by, desmoyokin/AHNAK. This study aimed to evaluate the expression of AHNAK in NPC and its effect on enlargeosomes and to investigate the correlation between AHNAK expression levels and clinical NPC patient characteristics. METHODS Primary nasopharyngeal carcinoma (NPC) and NPC specimens were evaluated by analyzing public data, and immunohistochemistry. Systematic in vitro and in vivo experiments were performed using different NPC-derived cell lines and mouse models. RESULTS In this study, we detected AHNAK and Annexin A2(ANXA2), a protein coating the surface of enlargeosomes, in NPC samples. We found that AHNAK was down-regulated. Down-regulation of AHNAK was associated with poor overall survival in NPC patients. Moreover, transcription factor FOSL1-mediated transcriptional repression was responsible for the low expression of AHNAK by recruiting EZH2. Whereas Annexin A2 was upregulated in human NPC tissues. Upregulation of Annexin A2 was associated with lymph node metastasis and distant metastasis in NPC patients. Functional studies confirmed that silencing of AHNAK enhanced the growth, invasion, and metastatic properties of NPC cells both in vitro and in vivo. In terms of mechanism, loss of AHNAK led to an increase of annexin A2 protein level in NPC cells. Silencing ANXA2 restored NPC cells' migrative and invasive ability upon loss of AHNAK. CONCLUSION Here, we report AHNAK as a tumor suppressor in NPC, which may act through annexin A2 oncogenic signaling in enlargeosome, with potential implications for novel approaches to NPC treatment.
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Affiliation(s)
- Xingxing Lu
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China
- FuRong Laboratory, Changsha, 410078, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Yan Mei
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China
- FuRong Laboratory, Changsha, 410078, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Chunmei Fan
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China
- FuRong Laboratory, Changsha, 410078, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Pan Chen
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China
| | - Xiayu Li
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Zhaoyang Zeng
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China
- FuRong Laboratory, Changsha, 410078, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Guiyuan Li
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China
- FuRong Laboratory, Changsha, 410078, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Wei Xiong
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China
- FuRong Laboratory, Changsha, 410078, Hunan, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Bo Xiang
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, 410013, China.
- The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, 410078, Hunan, China.
- FuRong Laboratory, Changsha, 410078, Hunan, China.
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China.
| | - Mei Yi
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
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Skryabin GO, Komelkov AV, Galetsky SA, Bagrov DV, Evtushenko EG, Nikishin II, Zhordaniia KI, Savelyeva EE, Akselrod ME, Paianidi IG, Tchevkina EM. Stomatin is highly expressed in exosomes of different origin and is a promising candidate as an exosomal marker. J Cell Biochem 2020; 122:100-115. [PMID: 32951259 DOI: 10.1002/jcb.29834] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 04/13/2020] [Accepted: 06/30/2020] [Indexed: 01/05/2023]
Abstract
Proteins involved in the organizing of lipid rafts can be found in exosomes, as shown for caveolin-1, and they could contribute to exosomal cargo sorting, as shown for flotillins. Stomatin belongs to the same stomatin/prohibitin/flotillin/HflK/C family of lipid rafts proteins, but it has never been studied in exosomes except for extracellular vesicles (EVs) originating from blood cells. Here we first show the presence of stomatin in exosomes produced by epithelial cancer cells (non-small cell lung cancer, breast, and ovarian cancer cells) as well as in EVs from biological fluids, including blood plasma, ascitic fluids, and uterine flushings. A high abundance of stomatin in EVs of various origins and its enrichment in exosomes make stomatin a promising exosomal marker. Comparison with other lipid raft proteins and exosomal markers showed that the level of stomatin protein in exosomes from different sources corresponds well to that of CD9, while it differs essentially from flotillin-1 and flotillin-2 homologs, which in turn are present in exosomes in nearly equal proportions. In contrast, the level of vesicular caveolin-1 as well as its EV-to-cellular ratio vary drastically depending on cell type.
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Affiliation(s)
- Gleb O Skryabin
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
| | - Andrei V Komelkov
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
| | - Sergey A Galetsky
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
| | - Dmitry V Bagrov
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Evgeniy G Evtushenko
- Department of Chemical Enzymology, Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Igor I Nikishin
- Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Kirill I Zhordaniia
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
| | - Elizaveta E Savelyeva
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
| | - Maria E Akselrod
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
| | - Iulia G Paianidi
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
| | - Elena M Tchevkina
- Oncogene Regulation Department of Institute of Carcinogenesis, N. N. Blokhin National Medical Research Center of Oncology, Moscow, Russia
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Exosomes-Mediated Transfer of Itga2 Promotes Migration and Invasion of Prostate Cancer Cells by Inducing Epithelial-Mesenchymal Transition. Cancers (Basel) 2020; 12:cancers12082300. [PMID: 32824235 PMCID: PMC7466113 DOI: 10.3390/cancers12082300] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/11/2020] [Accepted: 08/13/2020] [Indexed: 12/19/2022] Open
Abstract
Although integrin alpha 2 subunit (ITGA2) mediates cancer progression and metastasis, its transfer by exosomes has not been investigated in prostate cancer (PCa). We aimed to determine the role of exosomal ITGA2 derived from castration-resistant PCa (CRPC) cells in promoting aggressive phenotypes in androgen receptor (AR)-positive cells. Exosomes were co-incubated with recipient cells and tested for different cellular assays. ITGA2 was enriched in exosomes derived from CRPC cells. Co-culture of AR-positive cells with CRPC-derived exosomes increased their proliferation, migration, and invasion by promoting epithelial-mesenchymal transition, which was reversed via ITGA2 knockdown or inhibition of exosomal uptake by methyl-β-cyclodextrin (MβCD). Ectopic expression of ITGA2 reproduced the effect of exosomal ITGA2 in PCa cells. ITGA2 transferred by exosomes exerted its effect within a shorter time compared to that triggered by its endogenous expression. The difference of ITGA2 protein expression in localized tumors and those with lymph node metastatic tissues was indistinguishable. Nevertheless, its abundance was higher in circulating exosomes collected from PCa patients when compared with normal subjects. Our findings indicate the possible role of the exosomal-ITGA2 transfer in altering the phenotype of AR-positive cells towards more aggressive phenotype. Thus, interfering with exosomal cargo transfer may inhibit the development of aggressive phenotype in PCa cells.
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Khalyfa A, Castro-Grattoni AL, Gozal D. Cardiovascular morbidities of obstructive sleep apnea and the role of circulating extracellular vesicles. Ther Adv Respir Dis 2020; 13:1753466619895229. [PMID: 31852426 PMCID: PMC6923690 DOI: 10.1177/1753466619895229] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Obstructive sleep apnea (OSA) is characterized by recurrent upper airway collapse
during sleep resulting in impaired blood gas exchange, namely intermittent
hypoxia (IH) and hypercapnia, fragmented sleep (SF), increased oxidative stress
and systemic inflammation. Among a myriad of potential associated morbidities,
OSA has been particularly implicated as mechanistically contributing to the
prevalence and severity of cardiovascular diseases (CVD). However, the benefits
of continuous positive airway pressure (CPAP), which is generally employed in
OSA treatment, to either prevent or improve CVD outcomes remain unconvincing,
suggesting that the pathophysiological mechanisms underlying the incremental CVD
risk associated with OSA are not clearly understood. One of the challenges in
development of non-invasive diagnostic assays is the ability to identify
clinically and mechanistically relevant biomarkers. Circulating extracellular
vesicles (EVs) and their cargos reflect underlying changes in cellular
homeostasis and can provide insights into how cells and systems cope with
physiological perturbations by virtue of the identity and abundance of miRNAs,
mRNAs, proteins, and lipids that are packaged in the EVs under normal as well as
diseased states, such as OSA. EVs can not only provide unique insights into
coordinated cellular responses at the organ or systemic level, but can also
serve as reporters of the effects of OSA in CVD, either by their properties
enabling regeneration and repair of injured vascular cells or by damaging them.
Here, we highlight recent progress in the pathological CVD consequences of OSA,
and explore the putative roles of EVs in OSA-associated CVD, along with emerging
diagnostic and therapeutic opportunities. The reviews of this paper are available via the supplemental material
section.
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Affiliation(s)
- Abdelnaby Khalyfa
- Department of Child Health and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO, USA
| | - Anabel L Castro-Grattoni
- Department of Child Health and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO, USA
| | - David Gozal
- Department of Child Health and MU Women's and Children's Hospital, University of Missouri School of Medicine, 400 N. Keene Street, Suite 010, Columbia, MO 65201, USA
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Extracellular Vesicles Isolated from Human Induced Pluripotent Stem Cell-Derived Neurons Contain a Transcriptional Network. Neurochem Res 2020; 45:1711-1728. [PMID: 32361798 PMCID: PMC7297870 DOI: 10.1007/s11064-020-03019-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/23/2020] [Accepted: 03/27/2020] [Indexed: 12/14/2022]
Abstract
Healthy brain function is mediated by several complementary signalling pathways, many of which are driven by extracellular vesicles (EVs). EVs are heterogeneous in both size and cargo and are constitutively released from cells into the extracellular milieu. They are subsequently trafficked to recipient cells, whereupon their entry can modify the cellular phenotype. Here, in order to further analyse the mRNA and protein cargo of neuronal EVs, we isolated EVs by size exclusion chromatography from human induced pluripotent stem cell (iPSC)-derived neurons. Electron microscopy and dynamic light scattering revealed that the isolated EVs had a diameter of 30–100 nm. Transcriptomic and proteomics analyses of the EVs and neurons identified key molecules enriched in the EVs involved in cell surface interaction (integrins and collagens), internalisation pathways (clathrin- and caveolin-dependent), downstream signalling pathways (phospholipases, integrin-linked kinase and MAPKs), and long-term impacts on cellular development and maintenance. Overall, we show that key signalling networks and mechanisms are enriched in EVs isolated from human iPSC-derived neurons.
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6
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Groot M, Lee H. Sorting Mechanisms for MicroRNAs into Extracellular Vesicles and Their Associated Diseases. Cells 2020; 9:cells9041044. [PMID: 32331346 PMCID: PMC7226101 DOI: 10.3390/cells9041044] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/18/2020] [Accepted: 04/21/2020] [Indexed: 12/17/2022] Open
Abstract
Extracellular vesicles (EV) are secretory membranous elements used by cells to transport proteins, lipids, mRNAs, and microRNAs (miRNAs). While their existence has been known for many years, only recently has research begun to identify their function in intercellular communication and gene regulation. Importantly, cells have the ability to selectively sort miRNA into EVs for secretion to nearby or distant targets. These mechanisms broadly include RNA-binding proteins such as hnRNPA2B1 and Argonaute-2, but also membranous proteins involved in EV biogenesis such as Caveolin-1 and Neural Sphingomyelinase 2. Moreover, certain disease states have also identified dysregulated EV-miRNA content, shedding light on the potential role of selective sorting in pathogenesis. These pathologies include chronic lung disease, immune response, neuroinflammation, diabetes mellitus, cancer, and heart disease. In this review, we will overview the mechanisms whereby cells selectively sort miRNA into EVs and also outline disease states where EV-miRNAs become dysregulated.
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Affiliation(s)
- Michael Groot
- Department of Medicine, Boston University Medical Campus, Boston, MA 02118, USA;
| | - Heedoo Lee
- Department of Biology and Chemistry, Changwon National University, Changwon 51140, Korea
- Correspondence: ; Tel.: +82-55-213-3452
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7
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Skryabin GO, Komelkov AV, Savelyeva EE, Tchevkina EM. Lipid Rafts in Exosome Biogenesis. BIOCHEMISTRY (MOSCOW) 2020; 85:177-191. [PMID: 32093594 DOI: 10.1134/s0006297920020054] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Exosomes (secreted extracellular vesicles formed in the intracellular vesicular transport system) play a crucial role in distant cell-cell communication. Exosomes transfer active forms of various biomolecules; the molecular composition of the exosomal cargo is a result of targeted selection and depends on the type of producer cells. The mechanisms underlying exosome formation and cargo selection are poorly understood. It is believed that there are several pathways for exosome biogenesis, although the questions about their independence and simultaneous coexistence in the cell still remain open. The least studied topic is the recently discovered mechanism of exosome formation associated with lipid rafts, or membrane lipid microdomains. Here, we present modern concepts and basic hypotheses on the mechanisms of exosome biogenesis and secretion and summarize current data on the involvement of lipid rafts and their constituent molecules in these processes. Special attention is paid to the analysis of possible role in the exosome formation of raft-forming proteins of the SPFH family, components of planar rafts, and caveolin, the main component of caveolae.
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Affiliation(s)
- G O Skryabin
- Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, 115478, Russia
| | - A V Komelkov
- Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, 115478, Russia.
| | - E E Savelyeva
- Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, 115478, Russia
| | - E M Tchevkina
- Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, 115478, Russia
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Kruglikov IL, Zhang Z, Scherer PE. Caveolin-1 in skin aging - From innocent bystander to major contributor. Ageing Res Rev 2019; 55:100959. [PMID: 31493519 PMCID: PMC6783389 DOI: 10.1016/j.arr.2019.100959] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/01/2019] [Accepted: 09/03/2019] [Indexed: 01/10/2023]
Abstract
Caveolin-1 (Cav-1) appears to be both a pathophysiological contributor and a target in different inflammatory and hyperproliferative skin conditions as well as in skin aging. Skin fibroblasts demonstrate an up-regulation of Cav-1 expression both in chronological and UV-induced aging, and such an up-regulation was observed both in vitro and in vivo. Typical alterations in aging skin involve a reduction of the dermis thickness, a significant expansion of the dermal white adipose tissue as well as modifications of the content and distribution of hyaluronan, impairment of autophagic flux, a reduction of collagen expression and an increase in tissue inflammation. All of these phenomena can be connected with changes in Cav-1 expression in the aging skin. Modified expression of Cav-1 can also significantly influence the mechanical properties of individual skin layers, thus changing the total mechanical stability of the layered composite skin/WAT, leading to typical structural modifications of the skin surface in the aging skin. Selective reduction of Cav-1 expression has the potential to exert anti-aging effects on the skin.
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Affiliation(s)
| | - Zhuzhen Zhang
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, 75390-8549, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, 75390-8549, USA.
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Weber NC, Schilling JM, Warmbrunn MV, Dhanani M, Kerindongo R, Siamwala J, Song Y, Zemljic-Harpf AE, Fannon MJ, Hollmann MW, Preckel B, Roth DM, Patel HH. Helium-Induced Changes in Circulating Caveolin in Mice Suggest a Novel Mechanism of Cardiac Protection. Int J Mol Sci 2019; 20:E2640. [PMID: 31146391 PMCID: PMC6600664 DOI: 10.3390/ijms20112640] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 05/16/2019] [Accepted: 05/20/2019] [Indexed: 12/26/2022] Open
Abstract
The noble gas helium (He) induces cardioprotection in vivo through unknown molecular mechanisms. He can interact with and modify cellular membranes. Caveolae are cholesterol and sphingolipid-enriched invaginations of the plasma-membrane-containing caveolin (Cav) proteins that are critical in protection of the heart. Mice (C57BL/6J) inhaled either He gas or adjusted room air. Functional measurements were performed in the isolated Langendorff perfused heart at 24 h post He inhalation. Electron paramagnetic resonance spectrometry (EPR) of samples was carried out at 24 h post He inhalation. Immunoblotting was used to detect Cav-1/3 expression in whole-heart tissue, exosomes isolated from platelet free plasma (PFP) and membrane fractions. Additionally, transmission electron microscopy analysis of cardiac tissue and serum function and metabolomic analysis were performed. In contrast to cardioprotection observed in in vivo models, the isolated Langendorff perfused heart revealed no protection after He inhalation. However, levels of Cav-1/3 were reduced 24 h after He inhalation in whole-heart tissue, and Cav-3 was increased in exosomes from PFP. Addition of serum to muscle cells in culture or naïve ventricular tissue increased mitochondrial metabolism without increasing reactive oxygen species generation. Primary and lipid metabolites determined potential changes in ceramide by He exposure. In addition to direct effects on myocardium, He likely induces the release of secreted membrane factors enriched in caveolae. Our results suggest a critical role for such circulating factors in He-induced organ protection.
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Affiliation(s)
- Nina C Weber
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Jan M Schilling
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Moritz V Warmbrunn
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Mehul Dhanani
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Raphaela Kerindongo
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
| | - Jamila Siamwala
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
- Brown University and VA Providence, 830 Chalkstone Avenue, Providence, RI 02908, USA.
| | - Young Song
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Alice E Zemljic-Harpf
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - McKenzie J Fannon
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Markus W Hollmann
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
| | - Benedikt Preckel
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
| | - David M Roth
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
| | - Hemal H Patel
- VA San Diego Healthcare System and Department of Anesthesiology, University of California, San Diego, #125, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
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Sayner SL, Choi CS, Maulucci ME, Ramila KC, Zhou C, Scruggs AK, Yarbrough T, Blair LA, King JA, Seifert R, Kaever V, Bauer NN. Extracellular vesicles: another compartment for the second messenger, cyclic adenosine monophosphate. Am J Physiol Lung Cell Mol Physiol 2019; 316:L691-L700. [PMID: 30758991 PMCID: PMC6483015 DOI: 10.1152/ajplung.00282.2018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 01/16/2019] [Accepted: 02/01/2019] [Indexed: 12/17/2022] Open
Abstract
The second messenger, cAMP, is highly compartmentalized to facilitate signaling specificity. Extracellular vesicles (EVs) are submicron, intact vesicles released from many cell types that can act as biomarkers or be involved in cell-to-cell communication. Although it is well recognized that EVs encapsulate functional proteins and RNAs/miRNAs, currently it is unclear whether cyclic nucleotides are encapsulated within EVs to provide an additional second messenger compartment. Using ultracentrifugation, EVs were isolated from the culture medium of unstimulated systemic and pulmonary endothelial cells. EVs were also isolated from pulmonary microvascular endothelial cells (PMVECs) following stimulation of transmembrane adenylyl cyclase (AC) in the presence or absence of the phosphodiesterase 4 inhibitor rolipram over time. Whereas cAMP was detected in EVs isolated from endothelial cells derived from different vascular beds, it was highest in EVs isolated from PMVECs. Treatment of PMVECs with agents that increase near-membrane cAMP led to an increase in cAMP within corresponding EVs, yet there was no increase in EV number. Elevated cell cAMP, measured by whole cell measurements, peaked 15 min after treatment, yet in EVs the peak increase in cAMP was delayed until 60 min after cell stimulation. Cyclic AMP was also increased in EVs collected from the perfusate of isolated rat lungs stimulated with isoproterenol and rolipram, thus corroborating cell culture findings. When added to unperturbed confluent PMVECs, EVs containing elevated cAMP were not barrier disruptive like cytosolic cAMP but maintained monolayer resistance. In conclusion, PMVECs release EVs containing cAMP, providing an additional compartment to cAMP signaling.
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Affiliation(s)
- Sarah L Sayner
- Department of Physiology Cell Biology, University of South Alabama , Mobile, Alabama
- Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Chung-Sik Choi
- Department of Physiology Cell Biology, University of South Alabama , Mobile, Alabama
| | - Marcy E Maulucci
- Department of Physiology Cell Biology, University of South Alabama , Mobile, Alabama
| | - K C Ramila
- Department of Physiology Cell Biology, University of South Alabama , Mobile, Alabama
| | - Chun Zhou
- Department of Physiology Cell Biology, University of South Alabama , Mobile, Alabama
| | - April K Scruggs
- Department of Physiology Pharmacology, University of South Alabama , Mobile, Alabama
- Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Thomas Yarbrough
- Department of Physiology Biochemistry, University of South Alabama , Mobile, Alabama
- Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Leslie A Blair
- Department of Physiology Pharmacology, University of South Alabama , Mobile, Alabama
- Center for Lung Biology, University of South Alabama , Mobile, Alabama
| | - Judy A King
- Department of Pathology and Translational Pathobiology, Louisiana State University Health , Shreveport, Louisiana
| | - Roland Seifert
- Institute of Pharmacology, Hanover Medical School , Hanover , Germany
| | - Volkhard Kaever
- Research Core Unit, Metabolomics, Hanover Medical School , Hanover , Germany
| | - Natalie N Bauer
- Department of Physiology Pharmacology, University of South Alabama , Mobile, Alabama
- Center for Lung Biology, University of South Alabama , Mobile, Alabama
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Caveolin-1 as a pathophysiological factor and target in psoriasis. NPJ Aging Mech Dis 2019; 5:4. [PMID: 30729030 PMCID: PMC6363785 DOI: 10.1038/s41514-019-0034-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 01/03/2019] [Indexed: 12/14/2022] Open
Abstract
Low expression of caveolin-1 (Cav-1) is typical in psoriatic lesions and overexpression of Cav-1 leads to a reduction of inflammation and suppression of epidermal hyperproliferation, thus ameliorating these two well-known hallmarks of psoriasis. At the same time, the interfacial layers of the white adipose tissue (WAT) adjacent to psoriatic lesions demonstrate much higher stiffness, which also points to a modification of Cav-1 expression in this tissue. These processes are connected with each other and regulated via exosomal exchange. Here we discuss the role of Cav-1 expression in inflammatory and hyperproliferative processes and analyze the ways to provide spatially different modulation of Cav-1 expression in the skin and WAT. Such modulation can be induced by different pharmacological and physical factors. These include application of mechanical stress and supra-physiological temperatures. Cav-1 should therefore be considered as an important target in treatment of psoriasis.
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Smit KF, Konkel M, Kerindongo R, Landau MA, Zuurbier CJ, Hollmann MW, Preckel B, Nieuwland R, Albrecht M, Weber NC. Helium alters the cytoskeleton and decreases permeability in endothelial cells cultured in vitro through a pathway involving Caveolin-1. Sci Rep 2018; 8:4768. [PMID: 29555979 PMCID: PMC5859123 DOI: 10.1038/s41598-018-23030-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/05/2018] [Indexed: 01/31/2023] Open
Abstract
Caveolins are involved in anaesthetic-induced cardioprotection. Actin filaments are located in close connection to Caveolins in the plasma membrane. We hypothesised that helium might affect the cytoskeleton and induce secretion of Caveolin. HCAEC, HUVEC and Cav-1 siRNA transfected HUVEC were exposed for 20 minutes to either helium (5% CO2, 25% O2, 70% He) or control gas (5% CO2, 25% O2, 70% N2). Cells and supernatants were collected for infrared Western blot analysis, immunofluorescence staining, nanoparticle tracking analysis and permeability measurements. Helium treatment increased the cortical localisation of F-actin fibers in HUVEC. After 6 hours, helium decreased cellular Caveolin-1 (Cav-1) levels and increased Cav-1 levels in the supernatant. Cell permeability was decreased 6 and 12 hours after helium treatment, and increased levels of Vascular Endothelial - Cadherin (VE-Cadherin) and Connexin 43 (Cx43) were observed. Transfection with Cav-1 siRNA abolished the effects of helium treatment on VE-Cadherin, Cx43 levels and permeability. Supernatant obtained after helium treatment reduced cellular permeability in remote HUVEC, indicating that increased levels of Cav-1 are responsible for the observed alterations. These findings suggest that Cav-1 is secreted after helium exposure in vitro, altering the cytoskeleton and increasing VE-Cadherin and Cx43 expression resulting in decreased permeability in HUVEC.
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Affiliation(s)
- Kirsten F Smit
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Moritz Konkel
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
- Department of Anaesthesiology, UKSH, Campus Kiel, Kiel, Germany
| | - Raphaela Kerindongo
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Maximilian A Landau
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
- Department of Anaesthesiology, UKSH, Campus Kiel, Kiel, Germany
| | - Coert J Zuurbier
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Markus W Hollmann
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Benedikt Preckel
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Rienk Nieuwland
- Laboratory of Experimental Clinical Chemistry, and Vesicle Observation Centre, Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands
| | - Martin Albrecht
- Department of Anaesthesiology, UKSH, Campus Kiel, Kiel, Germany
| | - Nina C Weber
- Department of Anaesthesiology, Laboratory of Experimental Intensive Care and Anaesthesiology (L.E.I.C.A), Meibergdreef 9, 1100 DD, Amsterdam, The Netherlands.
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Functional Association between Regulatory RNAs and the Annexins. Int J Mol Sci 2018; 19:ijms19020591. [PMID: 29462943 PMCID: PMC5855813 DOI: 10.3390/ijms19020591] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/12/2018] [Accepted: 02/14/2018] [Indexed: 12/17/2022] Open
Abstract
Cells respond to pathophysiological states by activation of stress-induced signalling. Regulatory non-coding microRNAs (miRNAs) often form stable feed-forward loops which ensure prolongation of the signal, contributing to sustained activation. Members of the annexin protein family act as sensors for Ca2+, pH, and lipid second messengers, and regulate various signalling pathways. Recently, annexins were reported to participate in feedback loops, suppressing miRNA synthesis and attenuating stress-induced dysregulation of gene expression. They can directly or indirectly associate with RNAs, and are transferred between the cells in exosomes and shed microvesicles. The ability of annexins to recruit other proteins and miRNAs into exosomes implicates them in control of cell–cell interactions, affecting the adaptive responses and remodelling processes during disease. The studies summarized in this Review point to an emerging role of annexins in influencing the synthesis, localisation, and transfer of regulatory RNAs.
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Haase N, Rüder C, Haase H, Kamann S, Kouno M, Morano I, Dechend R, Zohlnhöfer D, Haase T. Protective Function of Ahnak1 in Vascular Healing after Wire Injury. J Vasc Res 2017; 54:131-142. [PMID: 28468000 DOI: 10.1159/000464287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 02/13/2017] [Indexed: 01/17/2023] Open
Abstract
AIM Vascular remodeling following injury substantially accounts for restenosis and adverse clinical outcomes. In this study, we investigated the role of the giant scaffold protein Ahnak1 in vascular healing after endothelial denudation of the murine femoral artery. METHODS The spatiotemporal expression pattern of Ahnak1 and Ahnak2 was examined using specific antibodies and real-time quantitative PCR. Following wire-mediated endothelial injury of Ahnak1-deficient mice and wild-type (WT) littermates, the processes of vascular healing were analyzed. RESULTS Ahnak1 and Ahnak2 showed a mutually exclusive vascular expression pattern, with Ahnak1 being expressed in the endothelium and Ahnak2 in the medial cells in naïve WT arteries. After injury, a marked increase of Ahnak1- and Ahnak2-positive cells at the lesion site became evident. Both proteins showed a strong upregulation in neointimal cells 14 days after injury. Ahnak1-deficient mice showed delayed vascular healing and dramatically impaired re-endothelialization that resulted in prolonged adverse vascular remodeling, when compared to the WT littermates. CONCLUSION The large scaffold and adaptor proteins Ahnak1 and Ahnak2 exhibit differential expression patterns and functions in naïve and injured arteries. Ahnak1 plays a nonredundant protective role in vascular healing.
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Affiliation(s)
- Nadine Haase
- Experimental and Clinical Research Center (a joint cooperation of the MDC and the Charité Medical Faculty), Berlin, Germany
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Caporali A, Martello A, Miscianinov V, Maselli D, Vono R, Spinetti G. Contribution of pericyte paracrine regulation of the endothelium to angiogenesis. Pharmacol Ther 2016; 171:56-64. [PMID: 27742570 DOI: 10.1016/j.pharmthera.2016.10.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
During physiological development and after a stressor event, vascular cells communicate with each other to evoke new vessel formation-a process known as angiogenesis. This communication occurs via direct contact and via paracrine release of proteins and nucleic acids, both in a free form or encapsulated into micro-vesicles. In diseases with an altered angiogenic response, such as cancer and diabetic vascular complications, it becomes of paramount importance to tune the cell communication process. Endothelial cell growth and migration are essential processes for new vessel formation, and pericytes, together with some classes of circulating monocytes, are important endothelial regulators. The interaction between pericytes and the endothelium is facilitated by their anatomical apposition, which involves endothelial cells and pericytes sharing the same basement membrane. However, the role of pericytes is not fully understood. The characteristics and the function of tissue-specific pericytesis are the focus of this review. Factors involved in the cross-talk between these cell types and the opportunities afforded by micro-RNA and micro-vesicle techniques are discussed. Targeting these mechanisms in pathological conditions, in which the vessel response is altered, is considered in relation to identification of new therapies for restoring the blood flow.
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Affiliation(s)
- A Caporali
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - A Martello
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - V Miscianinov
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - D Maselli
- IRCCS MultiMedica, Milan, Italy; Dipartimento di Scienze Biomediche, Università di Sassari, Sassari, Italy
| | - R Vono
- IRCCS MultiMedica, Milan, Italy
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