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Extracellular Vesicles Released by Enterovirus-Infected EndoC-βH1 Cells Mediate Non-Lytic Viral Spread. Microorganisms 2020; 8:microorganisms8111753. [PMID: 33171580 PMCID: PMC7695210 DOI: 10.3390/microorganisms8111753] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 10/31/2020] [Accepted: 11/06/2020] [Indexed: 12/28/2022] Open
Abstract
While human enteroviruses are generally regarded as a lytic virus, and persistent non-cytolytic enterovirus infection in pancreatic beta cells has been suspected of playing a role in type 1 diabetes pathogenesis. However, it is still unclear how enteroviruses could exit the pancreatic beta cell in a non-lytic manner. This study aimed to investigate the role of beta cell-derived extracellular vesicles (EVs) in the non-lytic enteroviral spread and infection. Size-exclusion chromatography and antibody-based immunoaffinity purification were used to isolate EVs from echovirus 16-infected human beta EndoC-βH1 cells. EVs were then characterized using transmission electron microscopy and Multiplex Bead-Based Flow Cytometry Assay. Virus production and release were quantified by 50% cell culture infectious dose (CCID50) assay and qRT-PCR. Our results showed that EVs from echovirus 16-infected EndoC-βH1 cells harbor infectious viruses and promote their spread during the pre-lytic phase of infection. Furthermore, the EVs-mediated infection was not inhibited by virus-specific neutralizing antibodies. In summary, this study demonstrated that enteroviruses could exit beta cells non-lytically within infectious EVs, thereby thwarting the access of neutralizing antibodies to viral particles. These data suggest that enterovirus transmission through EVs may contribute to viral dissemination and immune evasion in persistently infected beta cells.
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152
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Gao J, Wei B, de Assuncao TM, Liu Z, Hu X, Ibrahim S, Cooper SA, Cao S, Shah VH, Kostallari E. Hepatic stellate cell autophagy inhibits extracellular vesicle release to attenuate liver fibrosis. J Hepatol 2020; 73:1144-1154. [PMID: 32389810 PMCID: PMC7572579 DOI: 10.1016/j.jhep.2020.04.044] [Citation(s) in RCA: 158] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Autophagy plays a crucial role in hepatic homeostasis and its deregulation has been associated with chronic liver disease. However, the effect of autophagy on the release of fibrogenic extracellular vesicles (EVs) by platelet-derived growth factor (PDGF)-stimulated hepatic stellate cells (HSCs) remains unknown. Herein, we aimed to elucidate the role of autophagy, specifically relating to fibrogenic EV release, in fibrosis. METHODS In vitro experiments were conducted in primary human and murine HSCs as well as LX2 cells. Small EVs were purified by differential ultracentrifugation. Carbon tetrachloride (CCl4) or bile duct ligation (BDL) were used to induce fibrosis in our mouse model. Liver lysates from patients with cirrhosis or healthy controls were compared by RNA sequencing. RESULTS In vitro, PDGF and its downstream molecule SHP2 (Src homology 2-containing protein tyrosine phosphatase 2) inhibited autophagy and increased HSC-derived EV release. We used this PDGF/SHP2 model to further investigate how autophagy affects fibrogenic EV release. RNA sequencing identified an mTOR (mammalian target of rapamycin) signaling molecule that was regulated by SHP2 and PDGF. Disruption of mTOR signaling abolished PDGF-dependent EV release. Activation of mTOR signaling induced the release of multivesicular body-derived exosomes (by inhibiting autophagy) and microvesicles (by activating ROCK1 signaling). These mTOR-dependent EVs promoted in vitro HSC migration. To assess the importance of this mechanism in vivo, SHP2 was selectively deleted in HSCs, which attenuated CCl4- or BDL-induced liver fibrosis. Furthermore, in the CCl4 model, mice receiving circulating EVs derived from mice with HSC-specific Shp2 deletion had less fibrosis than mice receiving EVs from control mice. Correspondingly, SHP2 was upregulated in patients with liver cirrhosis. CONCLUSION These results demonstrate that autophagy in HSCs attenuates liver fibrosis by inhibiting the release of fibrogenic EVs. LAY SUMMARY During liver fibrosis and cirrhosis, activated hepatic stellate cells (HSCs) are the key cell type responsible for fibrotic tissue deposition. Recently, we demonstrated that activated HSCs release nano-sized vesicles enriched with fibrogenic proteins. In the current study, we unveil the mechanism by which these fibrogenic vesicles are released, moving a step closer to the long-term goal of therapeutically targeting this process.
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Affiliation(s)
- Jinhang Gao
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN,Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Bo Wei
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN,Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu, 610041 China
| | | | - Zhikui Liu
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Xiao Hu
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Samar Ibrahim
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Shawna A. Cooper
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN,Biochemistry and Molecular Biology Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN
| | - Sheng Cao
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Vijay H. Shah
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Enis Kostallari
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, United States.
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153
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Dai E, Han L, Liu J, Xie Y, Kroemer G, Klionsky DJ, Zeh HJ, Kang R, Wang J, Tang D. Autophagy-dependent ferroptosis drives tumor-associated macrophage polarization via release and uptake of oncogenic KRAS protein. Autophagy 2020; 16:2069-2083. [PMID: 31920150 PMCID: PMC7595620 DOI: 10.1080/15548627.2020.1714209] [Citation(s) in RCA: 337] [Impact Index Per Article: 84.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 12/04/2019] [Accepted: 12/28/2019] [Indexed: 02/07/2023] Open
Abstract
KRAS is the most frequently mutated oncogene in human neoplasia. Despite a large investment to understand the effects of KRAS mutation in cancer cells, the direct effects of the oncogenetic KRAS activation on immune cells remain elusive. Here, we report that extracellular KRASG12D is essential for pancreatic tumor-associated macrophage polarization. Oxidative stress induces KRASG12D protein release from cancer cells succumbing to autophagy-dependent ferroptosis. Extracellular KRASG12D packaged into exosomes then is taken up by macrophages through an AGER-dependent mechanism. KRASG12D causes macrophages to switch to an M2-like pro-tumor phenotype via STAT3-dependent fatty acid oxidation. Consequently, the disruption of KRASG12D release and uptake can abolish the macrophage-mediated stimulation of pancreatic adenocarcinomas in mouse models. Importantly, the level of KRASG12D expression in macrophages correlates with poor survival in pancreatic cancer patients. These findings not only identify extracellular KRASG12D as a key mediator of cancer cell-macrophage communication, but also provide a novel KRAS-targeted anticancer strategy. Abbreviations: DAMP, damage-associated molecular pattern; PBMCMs, peripheral blood mononuclear cell-derived macrophages; PDAC, pancreatic ductal adenocarcinoma; s.c., subcutaneously; TAMs, tumor-associated macrophages; TME, tumor microenvironment.
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Affiliation(s)
- Enyong Dai
- Department of Oncology and Hematology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Leng Han
- Department of Oncology and Hematology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Jiao Liu
- The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yangchun Xie
- Department of Oncology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Guido Kroemer
- Equipe Labellisée Par La Ligue Contre Le Cancer, Université De Paris, Sorbonne Université, INSERM U1138, Centre De Recherche Des Cordeliers, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
- Pôle De Biologie, Hôpital Européen Georges Pompidou, Paris, France
- Suzhou Institute for Systems Medicine, Chinese Academy of Sciences, Suzhou, China
- Department of Women’s and Children’s Health, Karolinska University Hospital, Stockholm, Sweden
| | - Daniel J. Klionsky
- Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA
| | - Herbert J. Zeh
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Jing Wang
- Department of Respiratory Medicine, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Daolin Tang
- The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
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154
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Ryskalin L, Biagioni F, Busceti CL, Lazzeri G, Frati A, Fornai F. The Multi-Faceted Effect of Curcumin in Glioblastoma from Rescuing Cell Clearance to Autophagy-Independent Effects. Molecules 2020; 25:E4839. [PMID: 33092261 PMCID: PMC7587955 DOI: 10.3390/molecules25204839] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/19/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022] Open
Abstract
The present review focuses on the multi-faceted effects of curcumin on the neurobiology glioblastoma multiforme (GBM), with a special emphasis on autophagy (ATG)-dependent molecular pathways activated by such a natural polyphenol. This is consistent with the effects of curcumin in a variety of experimental models of neurodegeneration, where the molecular events partially overlap with GBM. In fact, curcumin broadly affects various signaling pathways, which are similarly affected in cell degeneration and cell differentiation. The antitumoral effects of curcumin include growth inhibition, cell cycle arrest, anti-migration and anti-invasion, as well as chemo- and radio-sensitizing activity. Remarkably, most of these effects rely on mammalian target of rapamycin (mTOR)-dependent ATG induction. In addition, curcumin targets undifferentiated and highly tumorigenic GBM cancer stem cells (GSCs). When rescuing ATG with curcumin, the tumorigenic feature of GSCs is suppressed, thus counteracting GBM establishment and growth. It is noteworthy that targeting GSCs may also help overcome therapeutic resistance and reduce tumor relapse, which may lead to a significant improvement of GBM prognosis. The present review focuses on the multi-faceted effects of curcumin on GBM neurobiology, which represents an extension to its neuroprotective efficacy.
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Affiliation(s)
- Larisa Ryskalin
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy; (L.R.); (G.L.)
| | - Francesca Biagioni
- I.R.C.C.S. Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (C.L.B.); (A.F.)
| | - Carla L. Busceti
- I.R.C.C.S. Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (C.L.B.); (A.F.)
| | - Gloria Lazzeri
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy; (L.R.); (G.L.)
| | - Alessandro Frati
- I.R.C.C.S. Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (C.L.B.); (A.F.)
| | - Francesco Fornai
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy; (L.R.); (G.L.)
- I.R.C.C.S. Neuromed, Via Atinense 18, 86077 Pozzilli, Italy; (F.B.); (C.L.B.); (A.F.)
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155
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Hematopoietic stem and progenitor cell signaling in the niche. Leukemia 2020; 34:3136-3148. [PMID: 33077865 DOI: 10.1038/s41375-020-01062-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 09/09/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022]
Abstract
Hematopoietic stem and progenitor cells (HSPCs) are responsible for lifelong maintenance of hematopoiesis through self-renewal and differentiation into mature blood cell lineages. Traditional models hold that HSPCs guard homeostatic function and adapt to regenerative demand by integrating cell-autonomous, intrinsic programs with extrinsic cues from the niche. Despite the biologic significance, little is known about the active roles HSPCs partake in reciprocally shaping the function of their microenvironment. Here, we review evidence of signals emerging from HSPCs through secreted autocrine or paracrine factors, including extracellular vesicles, and via direct contact within the niche. We also discuss the functional impact of direct cellular interactions between hematopoietic elements on niche occupancy in the context of leukemic infiltration. The aggregate data support a model whereby HSPCs are active participants in the dynamic adaptation of the stem cell niche unit during development and homeostasis, and under inflammatory stress, malignancy, or transplantation.
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156
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Soraya H, Sani NA, Jabbari N, Rezaie J. Metformin Increases Exosome Biogenesis and Secretion in U87 MG Human Glioblastoma Cells: A Possible Mechanism of Therapeutic Resistance. Arch Med Res 2020; 52:151-162. [PMID: 33059952 DOI: 10.1016/j.arcmed.2020.10.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/02/2020] [Accepted: 10/02/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Glioblastoma multiforme (GBM) is the most common and aggressive brain tumor. Metformin, an anti-diabetic drug, can suppress tumor cells. Exosomes from GBM cells contribute to intercellular communication, tumor aggressiveness, and therapeutic resistance. We studied the effect of metformin on the exosomal secretory pathway in U87 MG cells. METHODS Cell survival against metformin was investigated using MTT assay. Expression of miRNA-21, miRNA-155, and miRNA-182, as well as the genes involved in exosome biogenesis and secretion such as Rab27a, Rab27b, Rab11, CD63, and Alix were calculated by real time-PCR. The expression of CD63 protein was analyzed by western blotting, while the subcellular distribution of CD63 protein was monitored by flow cytometry. Exosomes were characterized by transmission and scanning electron microscopes, and flow cytometry. Amount of exosomes was assayed using acetylcholinesterase activity assay and ELISA. The expression of autophagic markers LC3 and P62 were assessed using ELISA. RESULTS Data showed that metformin decreased cell survival and expression of miRNA-21, miRNA-155, and miRNA-182 (p <0.05). Expression of Rab27a, Rab27b, Rab11, CD63, and Alix as well as protein level of CD63 up-regulated in treated cells (p <0.05). Concurrently, flow cytometry analysis showed that surface CD63/total CD63 ratio was increased in treated cells (p <0.05). We found that acetylcholinesterase activity and CD63 protein of exosomes from treated cells increased (p <0.05). The expression of LC3 and P62 was not affected by metformin (p >0.05). CONCLUSION Data indicates metformin could promote exosome biogenesis and secretion in U87 MG cells, proposing the therapeutic response against metformin.
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Affiliation(s)
- Hamid Soraya
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Neda Abbaspour Sani
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Nassrollah Jabbari
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran; Department of Medical Physics and Imaging, Urmia University of Medical Sciences, Urmia, Iran
| | - Jafar Rezaie
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran.
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157
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Romanò S, Di Giacinto F, Primiano A, Mazzini A, Panzetta C, Papi M, Di Gaspare A, Ortolani M, Gervasoni J, De Spirito M, Nocca G, Ciasca G. Fourier Transform Infrared Spectroscopy as a useful tool for the automated classification of cancer cell-derived exosomes obtained under different culture conditions. Anal Chim Acta 2020; 1140:219-227. [PMID: 33218484 DOI: 10.1016/j.aca.2020.09.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/01/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023]
Abstract
Exosomes possess great potential as cancer biomarkers in personalized medicine due to their easy accessibility and capability of representing their parental cells. To boost the translational process of exosomes in diagnostics, the development of novel and effective strategies for their label-free and automated characterization is highly desirable. In this context, Fourier Transform Infrared Spectroscopy (FTIR) has great potential as it provides direct access to specific biomolecular bands that give compositional information on exosomes in terms of their protein, lipid and genetic content. Here, we used FTIR spectroscopy in the mid-Infrared (mid-IR) range to study exosomes released from human colorectal adenocarcinoma HT-29 cancer cells cultured in different media. To this purpose, cells were studied in well-fed condition of growth, with 10% of exosome-depleted FBS (EVd-FBS), and under serum starvation with 0.5% EVd-FBS. Our data show the presence of statistically significant differences in the shape of the Amide I and II bands in the two conditions. Based on these differences, we showed the possibility to automatically classify cancer cell-derived exosomes using Principal Component Analysis combined with Linear Discriminant Analysis (PCA-LDA); we tested the effectiveness of the classifier with a cross-validation approach, obtaining very high accuracy, precision, and recall. Aside from classification purposes, our FTIR data provide hints on the underlying cellular mechanisms responsible for the compositional differences in exosomes, suggesting a possible role of starvation-induced autophagy.
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Affiliation(s)
- Sabrina Romanò
- Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica Del Sacro Cuore, Roma, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - Flavio Di Giacinto
- Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica Del Sacro Cuore, Roma, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - Aniello Primiano
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy; Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica Del Sacro Cuore, Roma, Italy
| | - Alberto Mazzini
- Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica Del Sacro Cuore, Roma, Italy
| | - Claudia Panzetta
- Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica Del Sacro Cuore, Roma, Italy
| | - Massimiliano Papi
- Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica Del Sacro Cuore, Roma, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - Alessandra Di Gaspare
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy; NEST, CNR - Istituto Nanoscienze and Scuola Normale Superiore, Piazza San Silvestro 12, 56127, Pisa, Italy
| | - Michele Ortolani
- Dipartimento di Fisica, Sapienza University of Rome, Piazzale Aldo Moro 5, I-00185, Rome, Italy; Istituto Italiano di Tecnologia, Center for Life Nanoscience, Viale Regina Elena 291, I-00161, Rome, Italy
| | - Jacopo Gervasoni
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy; Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica Del Sacro Cuore, Roma, Italy
| | - Marco De Spirito
- Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica Del Sacro Cuore, Roma, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.
| | - Giuseppina Nocca
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica Del Sacro Cuore, Roma, Italy
| | - Gabriele Ciasca
- Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica Del Sacro Cuore, Roma, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.
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158
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Syrjä P, Palviainen M, Jokinen T, Kyöstilä K, Lohi H, Roosje P, Anderegg L, Leeb T, Sukura A, Eskelinen EL. Altered Basal Autophagy Affects Extracellular Vesicle Release in Cells of Lagotto Romagnolo Dogs With a Variant ATG4D. Vet Pathol 2020; 57:926-935. [PMID: 33016245 PMCID: PMC7747043 DOI: 10.1177/0300985820959243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Lagotto Romagnolo breed dogs develop a progressive neurological disease with intracellular vacuolar storage when homozygous for a variant in the autophagy-related gene 4D (ATG4D). A lysosomal enzyme deficiency has not been proven in this disease, despite its overlapping morphology with lysosomal storage diseases. Instead, basal autophagy was altered in fibroblasts from affected dogs. The aim of this study was to clarify the origin of the limiting membrane of the accumulating vacuoles and determine whether altered basal autophagy affects the extracellular release of vesicles in cells from diseased dogs. When assessed by immunoelectron microscopy, the membrane of the cytoplasmic vacuoles in affected tissues contained ATG4D, markers for autolysosomes (microtubule-associated protein 1A/B light chain 3 and lysosome-associated membrane protein 2) and for recycling endosomes (transferrin receptor 2), indicating that the vacuoles are hybrid organelles between endocytic and autophagic pathways. Ultracentrifugation, nanoparticle tracking analysis, and mass spectrometry were used to analyze the vesicles released from cultured fibroblasts of affected and control dogs. The amount of extracellular vesicles (EVs) released from affected fibroblasts was significantly increased during basal conditions in comparison to controls. This difference disappeared during starvation. The basal EV proteome of affected cells was enriched with cytosolic, endoplasmic reticulum, and mitochondrial proteins. Heat shock proteins and chaperones, some of which are known substrates of basal autophagy, were identified among the proteins unique to EVs of affected cells. An increased release of extracellular vesicles may serve as a compensatory mechanism in disposal of intracellular proteins during dysfunctional basal autophagy in this spontaneous disease.
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Affiliation(s)
| | | | | | - Kaisa Kyöstilä
- 3835University of Helsinki, Helsinki, Finland.,Folkhälsan Research Center, Helsinki, Finland
| | - Hannes Lohi
- 3835University of Helsinki, Helsinki, Finland.,Folkhälsan Research Center, Helsinki, Finland
| | | | | | - Tosso Leeb
- 27210University of Bern, Bern, Switzerland
| | | | - Eeva-Liisa Eskelinen
- 3835University of Helsinki, Helsinki, Finland.,8058University of Turku, Turku, Finland
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159
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Kim YH, Kwak MS, Lee B, Shin JM, Aum S, Park IH, Lee MG, Shin JS. Secretory autophagy machinery and vesicular trafficking are involved in HMGB1 secretion. Autophagy 2020; 17:2345-2362. [PMID: 33017561 PMCID: PMC8496717 DOI: 10.1080/15548627.2020.1826690] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Nuclear protein HMGB1 is secreted in response to various stimuli and functions as a danger-associated molecular pattern. Extracellular HMGB1 induces inflammation, cytokine production, and immune cell recruitment via activation of various receptors. As HMGB1 does not contain an endoplasmic reticulum-targeting signal peptide, HMGB1 is secreted via the endoplasmic reticulum-Golgi independently via an unconventional secretion pathway. However, the mechanism underlying HMGB1 secretion remains largely unknown. Here, we investigated the role of secretory autophagy machinery and vesicular trafficking in HMGB1 secretion. We observed that HSP90AA1 (heat shock protein 90 alpha family class A member 1), a stress-inducible protein, regulates the translocation of HMGB1 from the nucleus to the cytoplasm and its secretion through direct interaction. Additionally, geldanamycin, an HSP90AA1 inhibitor, reduced HMGB1 secretion. GORASP2/GRASP55 (golgi reassembly stacking protein 2), ARF1Q71L (ADP ribosylation factor 1), and SAR1AT39N (secretion associated Ras related GTPase 1A), which promoted unconventional protein secretion, increased HMGB1 secretion. HMGB1 secretion was inhibited by an early autophagy inhibitor and diminished in ATG5-deficient cells even when GORASP2 was overexpressed. In contrast, a late autophagy inhibitor increased HMGB1 secretion under the same conditions. The multivesicular body formation inhibitor GW4869 dramatically decreased HMGB1 secretion under HMGB1 secretion-inducing conditions. Thus, we demonstrated that secretory autophagy and multivesicular body formation mediate HMGB1 secretion.
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Affiliation(s)
- Young Hun Kim
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Man Sup Kwak
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Bin Lee
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Min Shin
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Sowon Aum
- Department of Pharmacology, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - In Ho Park
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Min Goo Lee
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Department of Pharmacology, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Jeon-Soo Shin
- Department of Microbiology, Yonsei University College of Medicine, Seoul, Korea.,Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea.,Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, Korea
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160
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Labadie T, Roy P. A non-enveloped arbovirus released in lysosome-derived extracellular vesicles induces super-infection exclusion. PLoS Pathog 2020; 16:e1009015. [PMID: 33075107 PMCID: PMC7595637 DOI: 10.1371/journal.ppat.1009015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 10/29/2020] [Accepted: 09/25/2020] [Indexed: 12/11/2022] Open
Abstract
Recent developments on extracellular vesicles (EVs) containing multiple virus particles challenge the rigid definition of non-enveloped viruses. However, how non-enveloped viruses hijack cell machinery to promote non-lytic release in EVs, and their functional roles, remain to be clarified. Here we used Bluetongue virus (BTV) as a model of a non-enveloped arthropod-borne virus and discovered that the majority of viruses are released in EVs. Based on the cellular proteins detected in these EVs, and use of inhibitors targeting the cellular degradation process, we demonstrated that these extracellular vesicles are derived from secretory lysosomes, in which the acidic pH is neutralized upon the infection. Moreover, we report that secreted EVs are more efficient than free-viruses for initiating infections, but that they trigger super-infection exclusion that only free-viruses can overcome.
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Affiliation(s)
- Thomas Labadie
- Department of Pathogen Molecular Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, Keppel Street, London, United Kingdom
| | - Polly Roy
- Department of Pathogen Molecular Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, Keppel Street, London, United Kingdom
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161
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Merezhko M, Uronen RL, Huttunen HJ. The Cell Biology of Tau Secretion. Front Mol Neurosci 2020; 13:569818. [PMID: 33071756 PMCID: PMC7539664 DOI: 10.3389/fnmol.2020.569818] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/26/2020] [Indexed: 12/27/2022] Open
Abstract
The progressive accumulation and spread of misfolded tau protein in the nervous system is the hallmark of tauopathies, progressive neurodegenerative diseases with only symptomatic treatments available. A growing body of evidence suggests that spreading of tau pathology can occur via cell-to-cell transfer involving secretion and internalization of pathological forms of tau protein followed by templated misfolding of normal tau in recipient cells. Several studies have addressed the cell biological mechanisms of tau secretion. It now appears that instead of a single mechanism, cells can secrete tau via three coexisting pathways: (1) translocation through the plasma membrane; (2) membranous organelles-based secretion; and (3) ectosomal shedding. The relative importance of these pathways in the secretion of normal and pathological tau is still elusive, though. Moreover, glial cells contribute to tau propagation, and the involvement of different cell types, as well as different secretion pathways, complicates the understanding of prion-like propagation of tauopathy. One of the important regulators of tau secretion in neuronal activity, but its mechanistic connection to tau secretion remains unclear and may involve all three secretion pathways of tau. This review article summarizes recent advancements in the field of tau secretion with an emphasis on cell biological aspects of the secretion process and discusses the role of neuronal activity and glial cells in the spread of pathological forms of tau.
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Affiliation(s)
- Maria Merezhko
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | | | - Henri J Huttunen
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
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162
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IKKβ activation promotes amphisome formation and extracellular vesicle secretion in tumor cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118857. [PMID: 32949647 DOI: 10.1016/j.bbamcr.2020.118857] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/28/2020] [Accepted: 09/11/2020] [Indexed: 02/07/2023]
Abstract
Intracellular organelle cross-talk is a new and important research area. Under stress conditions, the coordinated action of the autophagy and endosomal systems in tumor cells is essential for maintaining cellular homeostasis and survival. The activation of the IκB kinase (IKK) complex is also involved in the regulation of stress and homeostasis in tumor cells. Here, we try to explore the effects of constitutively active IKKβ subunits (CA-IKKβ) on autophagy and endosomal system interactions. We confirm that CA-IKKβ induces accumulation of autophagosomes and their fusion with MVBs to form amphisomes in cancer cells, and also drives the release of EVs containing autophagy components through an amphisome-dependent mechanism. We further demonstrate that CA-IKKβ inhibits the expression of RAB7, thereby weakening the lysosomal-dependent degradation pathway. CA-IKKβ also induces phosphorylation of SNAP23 at Ser95 instead of Ser110, which further promotes amphisome-plasma membrane fusion and sEV secretion. These results indicate that CA-IKKβ drives the formation and transport of amphisomes, thereby regulating tumor cell homeostasis, which may illuminate a special survival mechanism in tumor cells under stress.
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163
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Man K, Brunet MY, Jones MC, Cox SC. Engineered Extracellular Vesicles: Tailored-Made Nanomaterials for Medical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1838. [PMID: 32942556 PMCID: PMC7558114 DOI: 10.3390/nano10091838] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023]
Abstract
Extracellular vesicles (EVs) are emerging as promising nanoscale therapeutics due to their intrinsic role as mediators of intercellular communication, regulating tissue development and homeostasis. The low immunogenicity and natural cell-targeting capabilities of EVs has led to extensive research investigating their potential as novel acellular tools for tissue regeneration or for the diagnosis of pathological conditions. However, the clinical use of EVs has been hindered by issues with yield and heterogeneity. From the modification of parental cells and naturally-derived vesicles to the development of artificial biomimetic nanoparticles or the functionalisation of biomaterials, a multitude of techniques have been employed to augment EVs therapeutic efficacy. This review will explore various engineering strategies that could promote EVs scalability and therapeutic effectiveness beyond their native utility. Herein, we highlight the current state-of-the-art EV-engineering techniques with discussion of opportunities and obstacles for each. This is synthesised into a guide for selecting a suitable strategy to maximise the potential efficacy of EVs as nanoscale therapeutics.
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Affiliation(s)
- Kenny Man
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (K.M.); (M.Y.B.)
| | - Mathieu Y. Brunet
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (K.M.); (M.Y.B.)
| | - Marie-Christine Jones
- School of Pharmacy, Institute of Clinical Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;
| | - Sophie C. Cox
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (K.M.); (M.Y.B.)
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164
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Peter Szekeres G, Werner S, Guttmann P, Spedalieri C, Drescher D, Živanović V, Montes-Bayón M, Bettmer J, Kneipp J. Relating the composition and interface interactions in the hard corona of gold nanoparticles to the induced response mechanisms in living cells. NANOSCALE 2020; 12:17450-17461. [PMID: 32856032 DOI: 10.1039/d0nr03581e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Understanding the formation of the intracellular protein corona of nanoparticles is essential for a wide range of bio- and nanomedical applications. The innermost layer of the protein corona, the hard corona, directly interacts with the nanoparticle surface, and by shielding the surface, it has a deterministic effect on the intracellular processing of the nanoparticle. Here, we combine a direct qualitative analysis of the hard corona composition of gold nanoparticles with a detailed structural characterization of the molecules in their interaction with the nanoparticle surface and relate both to the effects they have on the ultrastructure of living cells and the processing of the gold nanoparticles. Cells from the cell lines HCT-116 and A549 were incubated with 30 nm citrate-stabilized gold nanoparticles and with their aggregates in different culture media. The combined results of mass spectrometry based proteomics, cryo soft X-ray nanotomography and surface-enhanced Raman scattering experiments together revealed different uptake mechanisms in the two cell lines and distinct levels of induced cellular stress when incubation conditions were varied. The data indicate that the different incubation conditions lead to changes in the nanoparticle processing via different protein-nanoparticle interfacial interactions. Specifically, they suggest that the protein-nanoparticle surface interactions depend mainly on the surface properties of the gold nanoparticles, that is, the ζ-potential and the resulting changes in the hydrophilicity of the nanoparticle surface, and are largely independent of the cell line, the uptake mechanism and intracellular processing, or the extent of the induced cellular stress.
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Affiliation(s)
- Gergo Peter Szekeres
- Humboldt-Universität zu Berlin, School of Analytical Sciences Adlershof, Albert-Einstein-Str. 5-9, 12489 Berlin, Germany.
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165
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Macrophage-derived exosomes in cancers: Biogenesis, functions and therapeutic applications. Immunol Lett 2020; 227:102-108. [PMID: 32888974 DOI: 10.1016/j.imlet.2020.08.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 08/05/2020] [Indexed: 02/06/2023]
Abstract
Macrophages are fundamental to promote tumorigenesis, tumor development and metastasis, and chemotherapy resistance through modulating tumor microenvironment and cancer cells. Recently, increasing studies have shown that exosomes could play a crucial role in orchestrating the crosstalk between macrophages and cancer cells. Exosomes, as one of the extracellular vehicles, deliver a diverse cast of molecules including lipids, proteins, and nucleic acids, etc. to the targeted cells to exert pleiotropic effects. The macrophage-derived exosomes have heterogeneity in different cancers and play paradoxical roles in suppressing and promoting tumors mainly via post-transcriptional control and regulating the phosphorylation of proteins in the recipient cells. Meanwhile, exosomes secreted by different phenotypes of macrophages provide diverse therapeutic options. Thus, in this review, we summarized the latest progress in outlining the current understanding of macrophage-derived exosomal biogenesis and mechanisms in mediating cancer progression, as well as their potential clinical applications.
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166
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mTOR Modulates Intercellular Signals for Enlargement and Infiltration in Glioblastoma Multiforme. Cancers (Basel) 2020; 12:cancers12092486. [PMID: 32887296 PMCID: PMC7564864 DOI: 10.3390/cancers12092486] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 12/18/2022] Open
Abstract
Simple Summary Glioblastoma multiforme (GBM) is the most aggressive and lethal primary brain tumor. Emerging evidence indicate the multi-faceted role of extracellular vesicles (EVs) in GBM growth and proliferation. In fact, GBM-derived EVs can alter the phenotype of GBM-associated parenchymal cells; thus, promoting tumor growth, angiogenesis, and immune evasion. Remarkably, among several pathways that are frequently deregulated in GBM, mammalian Target of Rapamycin (mTOR) up-regulation, and subsequent autophagy (ATG) depression are considered hallmarks of GBM. In fact, mTOR-dependent ATG inhibition strongly correlates with the presence of EVs, which in turn promotes glioblastoma cancer stem cells (GSCs) self-renewal, proliferation, and infiltration. ATG and exosome release are reciprocally regulated. In detail, a failure in ATG enhances exosomal release. Therefore, strategies aimed at targeting on mTOR-dependent extracellular vesicles could be a promising approach for GBM prevention and treatment. Abstract Recently, exosomal release has been related to the acquisition of a malignant phenotype in glioblastoma cancer stem cells (GSCs). Remarkably, intriguing reports demonstrate that GSC-derived extracellular vesicles (EVs) contribute to glioblastoma multiforme (GBM) tumorigenesis via multiple pathways by regulating tumor growth, infiltration, and immune invasion. In fact, GSCs release tumor-promoting macrovesicles that can disseminate as paracrine factors to induce phenotypic alterations in glioma-associated parenchymal cells. In this way, GBM can actively recruit different stromal cells, which, in turn, may participate in tumor microenvironment (TME) remodeling and, thus, alter tumor progression. Vice versa, parenchymal cells can transfer their protein and genetic contents to GSCs by EVs; thus, promoting GSCs tumorigenicity. Moreover, GBM was shown to hijack EV-mediated cell-to-cell communication for self-maintenance. The present review examines the role of the mammalian Target of Rapamycin (mTOR) pathway in altering EVs/exosome-based cell-to-cell communication, thus modulating GBM infiltration and volume growth. In fact, exosomes have been implicated in GSC niche maintenance trough the modulation of GSCs stem cell-like properties, thus, affecting GBM infiltration and relapse. The present manuscript will focus on how EVs, and mostly exosomes, may act on GSCs and neighbor non tumorigenic stromal cells to modify their expression and translational profile, while making the TME surrounding the GSC niche more favorable for GBM growth and infiltration. Novel insights into the mTOR-dependent mechanisms regulating EV-mediated intercellular communication within GBM TME hold promising directions for future therapeutic applications.
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167
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Extracellular vesicle signalling in atherosclerosis. Cell Signal 2020; 75:109751. [PMID: 32860954 PMCID: PMC7534042 DOI: 10.1016/j.cellsig.2020.109751] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 12/12/2022]
Abstract
Atherosclerosis is a major cardiovascular disease and in 2016, the World Health Organisation (WHO) estimated 17.5 million global deaths, corresponding to 31% of all global deaths, were driven by inflammation and deposition of lipids into the arterial wall. This leads to the development of plaques which narrow the vessel lumen, particularly in the coronary and carotid arteries. Atherosclerotic plaques can become unstable and rupture, leading to myocardial infarction or stroke. Extracellular vesicles (EVs) are a heterogeneous population of vesicles secreted from cells with a wide range of biological functions. EVs participate in cell-cell communication and signalling via transport of cargo including enzymes, DNA, RNA and microRNA in both physiological and patholophysiological settings. EVs are present in atherosclerotic plaques and have been implicated in cellular signalling processes in atherosclerosis development, including immune responses, inflammation, cell proliferation and migration, cell death and vascular remodeling during progression of the disease. In this review, we summarise the current knowledge regarding EV signalling in atherosclerosis progression and the potential of utilising EV signatures as biomarkers of disease.
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168
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Morand S, Stanbery L, Walter A, Rocconi RP, Nemunaitis J. BRCA1/2 Mutation Status Impact on Autophagy and Immune Response: Unheralded Target. JNCI Cancer Spectr 2020; 4:pkaa077. [PMID: 33409454 PMCID: PMC7771003 DOI: 10.1093/jncics/pkaa077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/06/2020] [Accepted: 08/10/2020] [Indexed: 12/27/2022] Open
Abstract
BRCA1 and possibly BRCA2 proteins may relate to the regulation of autophagy. Autophagy plays a key role in immune response from both a tumor and immune effector cell standpoint. In cells with BRCA mutations, increased autophagy leads to elevated expression of major histocompatibility complex class II but may cause subclonal neoantigen presentation, which may impair the immune response related to clonal neoantigen visibility. We review evidence of BRCA1/2 regulation of autophagy, immune response, and antigen presentation.
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Affiliation(s)
- Susan Morand
- Department of Internal Medicine, University of Toledo, Toledo, OH, USA
| | | | | | - Rodney P Rocconi
- University of South Alabama - Mitchell Cancer Institute, Mobile, AL, USA
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169
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Corbeil D, Santos MF, Karbanová J, Kurth T, Rappa G, Lorico A. Uptake and Fate of Extracellular Membrane Vesicles: Nucleoplasmic Reticulum-Associated Late Endosomes as a New Gate to Intercellular Communication. Cells 2020; 9:cells9091931. [PMID: 32825578 PMCID: PMC7563309 DOI: 10.3390/cells9091931] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 02/06/2023] Open
Abstract
Extracellular membrane vesicles (EVs) are emerging as new vehicles in intercellular communication, but how the biological information contained in EVs is shared between cells remains elusive. Several mechanisms have been described to explain their release from donor cells and the initial step of their uptake by recipient cells, which triggers a cellular response. Yet, the intracellular routes and subcellular fate of EV content upon internalization remain poorly characterized. This is particularly true for EV-associated proteins and nucleic acids that shuttle to the nucleus of host cells. In this review, we will describe and discuss the release of EVs from donor cells, their uptake by recipient cells, and the fate of their cargoes, focusing on a novel intracellular route wherein small GTPase Rab7+ late endosomes containing endocytosed EVs enter into nuclear envelope invaginations and deliver their cargo components to the nucleoplasm of recipient cells. A tripartite protein complex composed of (VAMP)-associated protein A (VAP-A), oxysterol-binding protein (OSBP)-related protein-3 (ORP3), and Rab7 is essential for the transfer of EV-derived components to the nuclear compartment by orchestrating the particular localization of late endosomes in the nucleoplasmic reticulum.
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Affiliation(s)
- Denis Corbeil
- Biotechnology Center (BIOTEC) and Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Tatzberg 47-49, 01307 Dresden, Germany; (J.K.)
- Correspondence: (D.C.); (A.L.); Tel.: +49-(0)351-463-40118 (D.C.); +1-(702)-777-3942 (A.L.); Fax: +49-(0)351-463-40244 (D.C.); +1-(702)-777-1758 (A.L.)
| | - Mark F. Santos
- College of Osteopathic Medicine, Touro University Nevada, 874 American Pacific Drive, Henderson, NV 89014, USA; (M.F.S.); (G.R.)
| | - Jana Karbanová
- Biotechnology Center (BIOTEC) and Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Tatzberg 47-49, 01307 Dresden, Germany; (J.K.)
| | - Thomas Kurth
- Center for Regenerative Therapies Dresden and CMCB, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany; (T.K.)
| | - Germana Rappa
- College of Osteopathic Medicine, Touro University Nevada, 874 American Pacific Drive, Henderson, NV 89014, USA; (M.F.S.); (G.R.)
| | - Aurelio Lorico
- College of Osteopathic Medicine, Touro University Nevada, 874 American Pacific Drive, Henderson, NV 89014, USA; (M.F.S.); (G.R.)
- Mediterranean Institute of Oncology, Via Penninazzo, 11, 95029 Viagrande, Italy
- Correspondence: (D.C.); (A.L.); Tel.: +49-(0)351-463-40118 (D.C.); +1-(702)-777-3942 (A.L.); Fax: +49-(0)351-463-40244 (D.C.); +1-(702)-777-1758 (A.L.)
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170
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Wu X, Luo L, Kong R, Song Y, Li Q, Nice EC, Wang K. Recent advances in autophagic machinery: a proteomic perspective. Expert Rev Proteomics 2020; 17:561-579. [PMID: 32772586 DOI: 10.1080/14789450.2020.1808464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Autophagy is an evolutionarily conserved cellular clearance process, by which cytosolic components are delivered to autolysosomes for breakdown and recycling to maintain cellular homeostasis. During the past decades, autophagy has been found to be tightly implicated in various physiological and pathological progresses. Unraveling the regulatory mechanisms of the autophagy process will contribute to the development of emerging autophagy-targeting strategies for the treatment of various diseases. Recently, the rapid development of proteomics approaches has enabled the use of large-scale unbiased strategies to unravel autophagy machinery. AREAS COVERED In this review, we will highlight the recent contributions of proteomics strategies in clarifying the autophagy machinery, with an emphasis on the three different types of autophagy (namely macroautophagy, microautophagy, and chaperone-mediated autophagy). We will also discuss the emerging role of proteomics approaches in investigating the mechanism of the autophagy-based unconventional secretory pathway (secretory autophagy). EXPERT OPINION Proteomics has provided an effective strategy for the comprehensive analysis of the autophagy process, which will broaden our understanding of autophagy machinery, and holds great promise for developing clinical therapies targeting autophagy.
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Affiliation(s)
- Xingyun Wu
- West China School of Basic Medical Sciences & Forensic Medicine, Center of Reproductive Medicine, West China Second University Hospital, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy , Chengdu, P.R. China
| | - Li Luo
- West China School of Basic Medical Sciences & Forensic Medicine, Center of Reproductive Medicine, West China Second University Hospital, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy , Chengdu, P.R. China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education , Chengdu, P.R. China
| | - Ruxin Kong
- West China School of Basic Medical Sciences & Forensic Medicine, Center of Reproductive Medicine, West China Second University Hospital, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy , Chengdu, P.R. China
| | - Yabing Song
- West China School of Basic Medical Sciences & Forensic Medicine, Center of Reproductive Medicine, West China Second University Hospital, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy , Chengdu, P.R. China
| | - Qifu Li
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, and Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University , Haikou, P.R. China
| | - Edouard C Nice
- Department of Biochemistry and Molecular Biology, Monash University , Clayton, Australia
| | - Kui Wang
- West China School of Basic Medical Sciences & Forensic Medicine, Center of Reproductive Medicine, West China Second University Hospital, and State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy , Chengdu, P.R. China
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171
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Soares Martins T, Trindade D, Vaz M, Campelo I, Almeida M, Trigo G, da Cruz E Silva OAB, Henriques AG. Diagnostic and therapeutic potential of exosomes in Alzheimer's disease. J Neurochem 2020; 156:162-181. [PMID: 32618370 DOI: 10.1111/jnc.15112] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/20/2020] [Accepted: 06/18/2020] [Indexed: 12/12/2022]
Abstract
Exosomes are small extracellular vesicles released by almost all cell types in physiological and pathological conditions. The exosomal potential to unravel disease mechanisms, or to be used as a source of biomarkers, is being explored, in particularly in the field of neurodegenerative diseases. Alzheimer's disease (AD) is the most prevalent neurodegenerative disease in the world and exosomes appear to have a relevant role in disease pathogenesis. This review summarizes the current knowledge on exosome contributions to AD as well as their use as disease biomarker resources or therapeutic targets. The most recent findings with respect to both protein and miRNA biomarker candidates for AD, herein described, highlight the state of the art in this field and encourage the use of exosomes derived from biofluids in clinical practice in the near future.
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Affiliation(s)
- Tânia Soares Martins
- Neurosciences and Signalling Group, Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Dário Trindade
- Neurosciences and Signalling Group, Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Margarida Vaz
- Neurosciences and Signalling Group, Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Inês Campelo
- Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Martim Almeida
- Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Guilherme Trigo
- Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Odete A B da Cruz E Silva
- Neurosciences and Signalling Group, Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro, Portugal.,The Discovery CTR, University of Aveiro Campus, Aveiro, Portugal
| | - Ana Gabriela Henriques
- Neurosciences and Signalling Group, Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
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172
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Pang K, Li B, Tang Z, Yang W, Hao L, Shi Z, Zhang J, Cai L, Li R, Liu Y, Lv Q, Ding J, Han C. Resveratrol inhibits hypertrophic scars formation by activating autophagy via the miR-4654/Rheb axis. Mol Med Rep 2020; 22:3440-3452. [PMID: 32945452 PMCID: PMC7453609 DOI: 10.3892/mmr.2020.11407] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 06/18/2020] [Indexed: 12/15/2022] Open
Abstract
Hypertrophic scars (HSs) are a type of pathological scar which are induced by surgery, burn injuries or trauma during the healing process. Due to the high recurrence rates and strong invasive properties, HSs have become a major clinical issue. Resveratrol has been identified as a potential agent to suppress scar formation; however, the underlying mechanism of action remains unclear. Therefore, the present study aimed to investigate the effect of resveratrol on HS-derived fibroblasts (HSFBs) in vitro. MTT assay was performed to evaluate cell viability following the resveratrol treatment. Western blot and RT-qPCR analysis was used to identify the expression levels and the relationship among autophagic markers, miR-4654 and resveratrol treatment. Finally, GFP-LC3 stable HSFBs cells were generated to further assess the effect of resveratrol. The results revealed that resveratrol significantly induced cell death in a dose-dependent manner and induced autophagy by downregulating the expression levels of Rheb in HSFBs. Notably, microRNA-4654 (miR-4654) was significantly decreased in the HSFBs and re-upregulated by resveratrol treatment dose-dependently. Through the bioinformatic analysis and luciferase assay, miR-4654 was identified to directly target Rheb. Transfection studies showed that miR-4654 negative correlated with Rheb expression, suggesting that the autophagic process may be altered by the miR-4654/Rheb axis under the control of resveratrol. In conclusion, the results of the present study suggested that resveratrol may promote autophagy by upregulating miR-4654, which in turn may suppress Rheb expression via directly binding to the 3′-untranslated region of Rheb. These findings provided a novel insight into the development of potential therapeutic targets for HSs.
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Affiliation(s)
- Kun Pang
- Department of Urology, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
| | - Bibo Li
- Department of Urology, Taizhou Hospital Affiliated to Nanjing University of Chinese Medicine, Taizhou, Jiangsu 225300, P.R. China
| | - Zhiming Tang
- Department of Dermatology, Xuzhou Hospital Affiliated to Nanjing University of Traditional Chinese Medicine, Xuzhou, Jiangsu 221009, P.R. China
| | - Wen Yang
- Department of Renal Disease, Shandong First Medical University, Tai'an, Shandong 271016, P.R. China
| | - Lin Hao
- Department of Urology, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
| | - Zhenduo Shi
- Department of Urology, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
| | - Jianjun Zhang
- Department of Urology, Suqian People's Hospital of Nanjing Drum-Tower Hospital Group, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, Jiangsu 223800, P.R. China
| | - Longjun Cai
- Department of Urology, Suqian People's Hospital of Nanjing Drum-Tower Hospital Group, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, Jiangsu 223800, P.R. China
| | - Rui Li
- Department of Burns and Plastic Surgery, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
| | - Ying Liu
- Department of Burns and Plastic Surgery, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
| | - Qian Lv
- Department of Burns and Plastic Surgery, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
| | - Jicun Ding
- Department of Burns and Plastic Surgery, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
| | - Conghui Han
- Department of Urology, Xuzhou Central Hospital, Xuzhou Clinical College Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu 221009, P.R. China
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173
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Cristofani R, Crippa V, Cicardi ME, Tedesco B, Ferrari V, Chierichetti M, Casarotto E, Piccolella M, Messi E, Galbiati M, Rusmini P, Poletti A. A Crucial Role for the Protein Quality Control System in Motor Neuron Diseases. Front Aging Neurosci 2020; 12:191. [PMID: 32792938 PMCID: PMC7385251 DOI: 10.3389/fnagi.2020.00191] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/02/2020] [Indexed: 12/11/2022] Open
Abstract
Motor neuron diseases (MNDs) are fatal diseases characterized by loss of motor neurons in the brain cortex, in the bulbar region, and/or in the anterior horns of the spinal cord. While generally sporadic, inherited forms linked to mutant genes encoding altered RNA/protein products have also been described. Several different mechanisms have been found altered or dysfunctional in MNDs, like the protein quality control (PQC) system. In this review, we will discuss how the PQC system is affected in two MNDs—spinal and bulbar muscular atrophy (SBMA) and amyotrophic lateral sclerosis (ALS)—and how this affects the clearance of aberrantly folded proteins, which accumulate in motor neurons, inducing dysfunctions and their death. In addition, we will discuss how the PQC system can be targeted to restore proper cell function, enhancing the survival of affected cells in MNDs.
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Affiliation(s)
- Riccardo Cristofani
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Valeria Crippa
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Maria Elena Cicardi
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy.,Department of Neuroscience, Jefferson Weinberg ALS Center, Vickie and Jack Farber Institute for Neuroscience, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States
| | - Barbara Tedesco
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Veronica Ferrari
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Marta Chierichetti
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Elena Casarotto
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Margherita Piccolella
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Elio Messi
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Mariarita Galbiati
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Paola Rusmini
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy
| | - Angelo Poletti
- Laboratorio di Biologia Applicata, Dipartimento di Scienze Farmacologiche e Biomolecolari, Dipartimento di Eccellenza 2018-2022, Università degli Studi di Milano, Milan, Italy.,Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Milan, Italy
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174
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Burbidge K, Zwikelmaier V, Cook B, Long MM, Balva B, Lonigro M, Ispas G, Rademacher DJ, Campbell EM. Cargo and cell-specific differences in extracellular vesicle populations identified by multiplexed immunofluorescent analysis. J Extracell Vesicles 2020; 9:1789326. [PMID: 32944176 PMCID: PMC7480458 DOI: 10.1080/20013078.2020.1789326] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) have been implicated in a wide variety of biological activities, have been implicated in the pathogenesis of numerous diseases, and have been proposed to serve as potential biomarkers of disease in human patients and animal models. However, characterization of EV populations is often performed using methods that do not account for the heterogeneity of EV populations and require comparatively large sample sizes to facilitate analysis. Here, we describe an imaging-based method that allows for the multiplexed characterization of EV populations at the single EV level following centrifugation of EV populations directly onto cover slips, allowing comprehensive analysis of EV populations with relatively small samples. We observe that canonical EV markers are present on subsets of EVs which differ substantially in a producer cell and cargo specific fashion, including differences in EVs containing different HIV-1 proteins previously reported to be incorporated into pathogenic EVs. We also describe a lectin binding assay to interrogate EVs based on their glycan content, which we observe to change in response to pharmacological modulation of secretory autophagy pathways. These studies collectively reveal that a multiplexed analysis of EV populations using fluorescent microscopy can reveal differences in specific EV populations that may be used to understand the biogenesis of specific EV populations and/or to interrogate small subsets of EVs of interest within larger EV populations in biological samples.
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Affiliation(s)
- Kevin Burbidge
- Graduate Program in Neuroscience, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Virginia Zwikelmaier
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Ben Cook
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Michael M Long
- Graduate Program in Neuroscience, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Barak Balva
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Michael Lonigro
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Grace Ispas
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - David J Rademacher
- Core Imaging Facility and Department of Microbiology and Immunology, Loyola University of Chicago, Maywood, IL, USA
| | - Edward M Campbell
- Graduate Program in Neuroscience, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
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175
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Reyes-Ruiz JM, Osuna-Ramos JF, De Jesús-González LA, Palacios-Rápalo SN, Cordero-Rivera CD, Farfan-Morales CN, Hurtado-Monzón AM, Gallardo-Flores CE, Alcaraz-Estrada SL, Salas-Benito JS, del Ángel RM. The Regulation of Flavivirus Infection by Hijacking Exosome-Mediated Cell-Cell Communication: New Insights on Virus-Host Interactions. Viruses 2020; 12:E765. [PMID: 32708685 PMCID: PMC7412163 DOI: 10.3390/v12070765] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/30/2020] [Accepted: 06/17/2020] [Indexed: 12/17/2022] Open
Abstract
The arthropod-borne flaviviruses are important human pathogens, and a deeper understanding of the virus-host cell interaction is required to identify cellular targets that can be used as therapeutic candidates. It is well reported that the flaviviruses hijack several cellular functions, such as exosome-mediated cell communication during infection, which is modulated by the delivery of the exosomal cargo of pro- or antiviral molecules to the receiving host cells. Therefore, to study the role of exosomes during flavivirus infections is essential, not only to understand its relevance in virus-host interaction, but also to identify molecular factors that may contribute to the development of new strategies to block these viral infections. This review explores the implications of exosomes in flavivirus dissemination and transmission from the vector to human host cells, as well as their involvement in the host immune response. The hypothesis about exosomes as a transplacental infection route of ZIKV and the paradox effect or the dual role of exosomes released during flavivirus infection are also discussed here. Although several studies have been performed in order to identify and characterize cellular and viral molecules released in exosomes, it is not clear how all of these components participate in viral pathogenesis. Further studies will determine the balance between protective and harmful exosomes secreted by flavivirus infected cells, the characteristics and components that distinguish them both, and how they could be a factor that determines the infection outcome.
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Affiliation(s)
- José Manuel Reyes-Ruiz
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | - Juan Fidel Osuna-Ramos
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | - Luis Adrián De Jesús-González
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | - Selvin Noé Palacios-Rápalo
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | - Carlos Daniel Cordero-Rivera
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | - Carlos Noe Farfan-Morales
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | - Arianna Mahely Hurtado-Monzón
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | - Carla Elizabeth Gallardo-Flores
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
| | | | - Juan Santiago Salas-Benito
- Maestría en Ciencias en Biomedicina Molecular, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, Mexico City 07320, Mexico
- Doctorado en Ciencias en Biotecnología, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, Mexico City 07320, Mexico
| | - Rosa María del Ángel
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City 07320, Mexico; (J.M.R.-R.); (J.F.O.-R.); (L.A.D.J.-G.); (S.N.P.-R.); (C.D.C.-R.); (C.N.F.-M.); (A.M.H.-M.); (C.E.G.-F.)
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176
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Baster Z, Li L, Rajfur Z, Huang C. Talin2 mediates secretion and trafficking of matrix metallopeptidase 9 during invadopodium formation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118693. [DOI: 10.1016/j.bbamcr.2020.118693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 02/21/2020] [Accepted: 03/03/2020] [Indexed: 12/18/2022]
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177
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Role of Exosomal miRNAs and the Tumor Microenvironment in Drug Resistance. Cells 2020; 9:cells9061450. [PMID: 32545155 PMCID: PMC7349227 DOI: 10.3390/cells9061450] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 02/07/2023] Open
Abstract
Tumor microenvironment (TME) is composed of different cellular populations, such as stromal, immune, endothelial, and cancer stem cells. TME represents a key factor for tumor heterogeneity maintenance, tumor progression, and drug resistance. The transport of molecules via extracellular vesicles emerged as a key messenger in intercellular communication in the TME. Exosomes are small double-layered lipid extracellular vesicles that can carry a variety of molecules, including proteins, lipids, and nucleic acids. Exosomal miRNA released by cancer cells can mediate phenotypical changes in the cells of TME to promote tumor growth and therapy resistance, for example, fibroblast- and macrophages-induced differentiation. Cancer stem cells can transfer and enhance drug resistance in neighboring sensitive cancer cells by releasing exosomal miRNAs that target antiapoptotic and immune-suppressive pathways. Exosomes induce drug resistance by carrying ABC transporters, which export chemotherapeutic agents out of the recipient cells, thereby reducing the drug concentration to suboptimal levels. Exosome biogenesis inhibitors represent a promising adjunct therapeutic approach in cancer therapy to avoid the acquisition of a resistant phenotype. In conclusion, exosomal miRNAs play a crucial role in the TME to confer drug resistance and survivability to tumor cells, and we also highlight the need for further investigations in this promising field.
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178
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Ho CJ, Samarasekera G, Rothe K, Xu J, Yang KC, Leung E, Chan M, Jiang X, Gorski SM. Puncta intended: connecting the dots between autophagy and cell stress networks. Autophagy 2020; 17:1028-1033. [PMID: 32507070 DOI: 10.1080/15548627.2020.1775394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Proteome profiling and global protein-interaction approaches have significantly improved our knowledge of the protein interactomes of autophagy and other cellular stress-response pathways. New discoveries regarding protein complexes, interaction partners, interaction domains, and biological roles of players that are part of these pathways are emerging. The fourth Vancouver Autophagy Symposium showcased research that expands our understanding of the protein interaction networks and molecular mechanisms underlying autophagy and other cellular stress responses in the context of distinct stressors. In the keynote presentation, Dr. Wade Harper described his team's recent discovery of a novel reticulophagy receptor for selective autophagic degradation of the endoplasmic reticulum, and discussed molecular mechanisms involved in ribophagy and non-autophagic ribosomal turnover. In other presentations, both omic and targeted approaches were used to reveal molecular players of other cellular stress responses including amyloid body and stress granule formation, anastasis, and extracellular vesicle biogenesis. Additional topics included the roles of autophagy in disease pathogenesis, autophagy regulatory mechanisms, and crosstalk between autophagy and cellular metabolism in anti-tumor immunity. The relationship between autophagy and other cell stress responses remains a relatively unexplored area in the field, with future investigations required to understand how the various processes are coordinated and connected in cells and tissues.Abbreviations: A-bodies: amyloid bodies; ACM: amyloid-converting motif; AMFR/gp78: autocrine motility factor receptor; ATG: autophagy-related; ATG4B: autophagy related 4B cysteine peptidase; CALCOCO2/NDP52: calcium binding and coiled-coil domain 2; CAR T: chimeric antigen receptor T; CASP3: caspase 3; CCPG1: cell cycle progression 1; CAR: chimeric antigen receptor; CML: chronic myeloid leukemia; CCOCs: clear cell ovarian cancers; CVB3: coxsackievirus B3; CRISPR-Cas9: clustered regularly interspaced short palindromic repeats-CRISPR associated protein 9; DDXs: DEAD-box helicases; EIF2S1/EIF-2alpha: eukaryotic translation initiation factor 2 subunit alpha; EIF2AK3: eukaryotic translation initiation factor 2 alpha kinase 3; ER: endoplasmic reticulum; EV: extracellular vesicle; FAO: fatty acid oxidation; GABARAP: GABA type A receptor-associated protein; ILK: integrin linked kinase; ISR: integrated stress response; MTOR: mechanistic target of rapamycin kinase; MPECs: memory precursory effector T cells; MAVS: mitochondrial antiviral signaling protein; NBR1: NBR1 autophagy cargo receptor; PI4KB/PI4KIIIβ: phosphatidylinositol 4-kinase beta; PLEKHM1: pleckstrin homology and RUN domain containing M1; RB1CC1: RB1 inducible coiled-coil 1; RTN3: reticulon 3; rIGSRNAs: ribosomal intergenic noncoding RNAs; RPL29: ribosomal protein L29; RPS3: ribosomal protein S3; S. cerevisiae: Saccharomyces cerevisiae; sEV: small extracellular vesicles; S. pombe: Schizosaccharomyces pombe; SQSTM1: sequestosome 1; SF3B1: splicing factor 3b subunit 1; SILAC-MS: stable isotope labeling with amino acids in cell culture-mass spectrometry; SNAP29: synaptosome associated protein 29; TEX264: testis expressed 264, ER-phagy receptor; TNBC: triple-negative breast cancer; ULK1: unc-51 like autophagy activating kinase 1; VAS: Vancouver Autophagy Symposium.
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Affiliation(s)
- Cally J Ho
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada
| | - Gayathri Samarasekera
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Katharina Rothe
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada.,Terry Fox Laboratory, BC Cancer, Vancouver, BC, Canada
| | - Jing Xu
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada
| | - Kevin C Yang
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada
| | - Emily Leung
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada
| | - Michelle Chan
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada
| | - Xiaoyan Jiang
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada.,Terry Fox Laboratory, BC Cancer, Vancouver, BC, Canada
| | - Sharon M Gorski
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
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179
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Hu W, Liu C, Bi ZY, Zhou Q, Zhang H, Li LL, Zhang J, Zhu W, Song YYY, Zhang F, Yang HM, Bi YY, He QQ, Tan GJ, Sun CC, Li DJ. Comprehensive landscape of extracellular vesicle-derived RNAs in cancer initiation, progression, metastasis and cancer immunology. Mol Cancer 2020; 19:102. [PMID: 32503543 PMCID: PMC7273667 DOI: 10.1186/s12943-020-01199-1] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/15/2020] [Indexed: 01/18/2023] Open
Abstract
Extracellular vesicles (EVs), a class of heterogeneous membrane vesicles, are generally divided into exosomes and microvesicles on basis of their origination from the endosomal membrane or the plasma membrane, respectively. EV-mediated bidirectional communication among various cell types supports cancer cell growth and metastasis. EVs derived from different cell types and status have been shown to have distinct RNA profiles, comprising messenger RNAs and non-coding RNAs (ncRNAs). Recently, ncRNAs have attracted great interests in the field of EV-RNA research, and growing numbers of ncRNAs ranging from microRNAs to long ncRNAs have been investigated to reveal their specific functions and underlying mechanisms in the tumor microenvironment and premetastatic niches. Emerging evidence has indicated that EV-RNAs are essential functional cargoes in modulating hallmarks of cancers and in reciprocal crosstalk within tumor cells and between tumor and stromal cells over short and long distance, thereby regulating the initiation, development and progression of cancers. In this review, we discuss current findings regarding EV biogenesis, release and interaction with target cells as well as EV-RNA sorting, and highlight biological roles and molecular mechanisms of EV-ncRNAs in cancer biology.
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Affiliation(s)
- Wei Hu
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Cong Liu
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Zhuo-Yue Bi
- Hubei Provincial Key Laboratory for Applied Toxicology (Hubei Provincial Academy for Preventive Medicine), Wuhan, Hubei, 430079, People's Republic of China
| | - Qun Zhou
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Han Zhang
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Lin-Lin Li
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Jian Zhang
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Wei Zhu
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Yang-Yi-Yan Song
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Feng Zhang
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Hui-Min Yang
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Yong-Yi Bi
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Qi-Qiang He
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China
| | - Gong-Jun Tan
- Department of Clinical Laboratory, Zhuhai Hospital, Jinan University, 79 Kangning Road, Zhuhai, Guangdong, 519000, People's Republic of China. .,Department of Biomedical Engineering, University of Houston, Houston, TX, 77204, USA.
| | - Cheng-Cao Sun
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China. .,Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
| | - De-Jia Li
- Department of Preventive Medicine, School of Health Science, Wuhan University, No.115 Donghu Road, Wuhan, Hubei, 430071, People's Republic of China. .,Population and Health Research Center, School of Health Sciences, Wuhan University, Wuhan, Hubei, 430071, People's Republic of China.
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180
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Birgisdottir ÅB, Johansen T. Autophagy and endocytosis – interconnections and interdependencies. J Cell Sci 2020; 133:133/10/jcs228114. [DOI: 10.1242/jcs.228114] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
ABSTRACT
Autophagy and endocytosis are membrane-vesicle-based cellular pathways for degradation and recycling of intracellular and extracellular components, respectively. These pathways have a common endpoint at the lysosome, where their cargo is degraded. In addition, the two pathways intersect at different stages during vesicle formation, fusion and trafficking, and share parts of the molecular machinery. Accumulating evidence shows that autophagy is dependent upon endocytosis and vice versa. The emerging joint network of autophagy and endocytosis is of vital importance for cellular metabolism and signaling, and thus also highly relevant in disease settings. In this Review, we will discuss examples of how the autophagy machinery impacts on endocytosis and cell signaling, and highlight how endocytosis regulates the different steps in autophagy in mammalian cells. Finally, we will focus on the interplay of these pathways in the quality control of their common endpoint, the lysosome.
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Affiliation(s)
- Åsa B. Birgisdottir
- The Heart and Lung Clinic, University Hospital of North Norway, 9037 Tromsø, Norway
- Clinical Cardiovascular Research Group, Department of Clinical Medicine, University of Tromsø –The Arctic University of Norway, 9037 Tromsø, Norway
| | - Terje Johansen
- Molecular Cancer Research Group, Department of Medical Biology, University of Tromsø–The Arctic University of Norway, 9037 Tromsø, Norway
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181
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Palumbo P, Lombardi F, Augello FR, Giusti I, Dolo V, Leocata P, Cifone MG, Cinque B. Biological effects of selective COX-2 inhibitor NS398 on human glioblastoma cell lines. Cancer Cell Int 2020; 20:167. [PMID: 32435158 PMCID: PMC7222447 DOI: 10.1186/s12935-020-01250-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/07/2020] [Indexed: 12/14/2022] Open
Abstract
Background Cyclooxygenase-2 (COX-2), an inflammation-associated enzyme, has been implicated in tumorigenesis and progression of glioblastoma (GBM). The poor survival of GBM was mainly associated with the presence of glioma stem cells (GSC) and the markedly inflammatory microenvironment. To further explore the involvement of COX-2 in glioma biology, the effects of NS398, a selective COX-2 inhibitor, were evaluated on GSC derived from COX-2 expressing GBM cell lines, i.e., U87MG and T98G, in terms of neurospheres' growth, autophagy, and extracellular vesicle (EV) release. Methods Neurospheres' growth and morphology were evaluated by optical and scanning electron microscopy. Autophagy was measured by staining acidic vesicular organelles. Extracellular vesicles (EV), released from neurospheres, were analyzed by transmission electron microscopy. The autophagic proteins Beclin-1 and LC3B, as well as the EV markers CD63 and CD81, were analyzed by western blotting. The scratch assay test was used to evaluate the NS398 influence on GBM cell migration. Results Both cell lines were strongly influenced by NS398 exposure, as showed by morphological changes, reduced growth rate, and appearance of autophagy. Furthermore, the inhibitor led to a functional change of EV released by neurospheres. Indeed, EV secreted by NS398-treated GSC, but not those from control cells, were able to significantly inhibit adherent U87MG and T98G cell migration and induced autophagy in recipient cells, thus leading to effects quite similar to those directly caused by NS398 in the same cells. Conclusion Despite the intrinsic diversity and individual genetic features of U87MG and T98G, comparable effects were exerted by the COX-2 inhibitor NS398 on both GBM cell lines. Overall, our findings support the crucial role of the inflammatory-associated COX-2/PGE2 system in glioma and glioma stem cell biology.
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Affiliation(s)
- Paola Palumbo
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Francesca Lombardi
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | | | - Ilaria Giusti
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Vincenza Dolo
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Pietro Leocata
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Maria Grazia Cifone
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Benedetta Cinque
- Department of Life, Health & Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy
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182
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The Messenger Apps of the cell: Extracellular Vesicles as Regulatory Messengers of Microglial Function in the CNS. J Neuroimmune Pharmacol 2020; 15:473-486. [PMID: 32337651 DOI: 10.1007/s11481-020-09916-9] [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: 03/31/2019] [Accepted: 03/20/2020] [Indexed: 02/08/2023]
Abstract
The intense effort of investigators, in particular during the past decade, has highlighted the importance of extracellular vesicles (EVs) such as exosomes in regulating both innate and adaptive immunity in the course of a variety of infections, with clear implications for development of novel vaccines, therapeutics, and diagnostics. Current and future efforts now need to focus strongly on teasing apart the intricate and complex molecular mechanisms that operate during EV regulation of immunity. In this review, we discuss recent advances that bear on our current understanding of how EVs, including exosomes, can contribute to the innate immune functions of microglia within the central nervous system (CNS), and we also highlight future important mechanistic questions that need to be addressed. In particular, recent findings that highlight the crosstalk between autophagy and exosome pathways and their implications for innate immune functions of microglia will be presented. Microglial activation has been shown to play a key role in neuroAIDS, a neuro-infectious disease for which the importance of exosome functions, including exosome-autophagy interplay, has been reported. The importance of exosomes and exosome-autophagy crosstalk involving microglia has also been shown for the Parkinson's disease (PD), a neurodegenerative disease that is thought to be linked with immune dysfunction and involve infectious agents as trigger. Considering the accumulation of recent findings and the vibrancy of the EV field, we anticipate that future studies will continue to have a deep impact on our understanding of the CNS pathologies that are influenced by the functions of microglia and of the infectious disease mechanisms in general. Graphical Abstract.
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183
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Autophagy in motor neuron diseases. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 172:157-202. [PMID: 32620242 DOI: 10.1016/bs.pmbts.2020.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Motor neuron diseases (MNDs) are a wide group of neurodegenerative disorders characterized by the degeneration of a specific neuronal type located in the central nervous system, the motor neuron (MN). There are two main types of MNs, spinal and cortical MNs and depending on the type of MND, one or both types are affected. Cortical MNs innervate spinal MNs and these control a variety of cellular targets, being skeletal muscle their main one which is also affected in MNDs. A correct functionality of autophagy is necessary for the survival of all cellular types and it is particularly crucial for neurons, given their postmitotic and highly specialized nature. Numerous studies have identified alterations of autophagy activity in multiple MNDs. The scientific community has been particularly prolific in reporting the role that autophagy plays in the most common adult MND, amyotrophic lateral sclerosis, although many studies have started to identify physiological and pathological functions of this catabolic system in other MNDs, such as spinal muscular atrophy and spinal and bulbar muscular atrophy. The degradation of selective cargo by autophagy and how this process is altered upon the presence of MND-causing mutations is currently also a matter of intense investigation, particularly regarding the selective autophagic clearance of mitochondria. Thorough reviews on this field have been recently published. This chapter will cover the current knowledge on the functionality of autophagy and lysosomal homeostasis in the main MNDs and other autophagy-related topics in the MND field that have risen special interest in the research community.
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184
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LeBleu VS, Kalluri R. Exosomes as a Multicomponent Biomarker Platform in Cancer. Trends Cancer 2020; 6:767-774. [PMID: 32307267 DOI: 10.1016/j.trecan.2020.03.007] [Citation(s) in RCA: 169] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/12/2020] [Accepted: 03/19/2020] [Indexed: 01/01/2023]
Abstract
Cancer is a complex disease that is associated with genetic aberrations and subsequent cellular and noncellular host responses. Tumors harbor diverse cell types that engage in a dynamic interplay to sustain cancer-specific signaling networks. A component of such cellular communication is the production and exchange of various types of extracellular vesicle (EV). Exosomes are small EVs with growing recognition for their role in cancer progression and resistance to therapy. The unique biogenesis of exosomes, their ubiquitous production by all cell types, and their biological features in liquid biopsies have generated excitement for their potential as cancer biomarkers. Here, we discuss the challenges and utility of exosomes as multiparameter biomarker platforms for the detection of cancer. Exosomes reflect heterogeneous biological changes associated with growing tumors, potentially offering a more comprehensive assessment of cancer diagnosis, prognosis, and progression.
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Affiliation(s)
- Valerie S LeBleu
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
| | - Raghu Kalluri
- Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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185
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Ghosh M, Murugadoss S, Janssen L, Cokic S, Mathyssen C, Van Landuyt K, Janssens W, Carpentier S, Godderis L, Hoet P. Distinct autophagy-apoptosis related pathways activated by Multi-walled (NM 400) and Single-walled carbon nanotubes (NIST-SRM2483) in human bronchial epithelial (16HBE14o-) cells. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121691. [PMID: 31791862 DOI: 10.1016/j.jhazmat.2019.121691] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/20/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Given the recent development in the field of particle and fibre toxicology, parallels have been drawn between Carbon nanotubes (CNTs) and asbestos. It is now established that both multi-walled (MWCNTs) and single-walled (SWCNTs) carbon nanotubes might contribute to pulmonary disease. Although multiple mechanisms might be involved in CNT induced pathogenesis, systematic understanding of the relationship between different CNT exposure (MWCNT vs SWCNT) and autophagy/ apoptosis/ necrosis, in human lung epithelial cells remains limited. In this study, we demonstrate that exposure to MWCNT (NM-400), but not SWCNT (NIST-SRM2483), leads to an autophagic response after acute exposure (24 h). MWCNT exposure was characterized by an increase in anti-apoptotic BCL2, downregulation of executor Caspase-3/7 and increase in expression of genes from the autophagy machinery. For SWCNT exposure however, we observed an overexpression of executor Caspase-3/7 and upregulation of pro-apoptotic BAX; enrichment for processes like cornification, apoptotic process, cell differentiation from proteomic analysis. These results clearly indicate a major difference in the pathways initiated by the CNTs, in vitro. While the present study design provides mechanistic understanding after an acute exposure for the tested CNTs, we believe that the information obtained here would have relevance in better understanding of CNT toxicity and pathogenesis in general.
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Affiliation(s)
- Manosij Ghosh
- Laboratory of Toxicology, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium.
| | - Sivakumar Murugadoss
- Laboratory of Toxicology, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium
| | - Lisa Janssen
- Laboratory of Toxicology, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium
| | - Stevan Cokic
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Carolien Mathyssen
- Laboratory of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Kirsten Van Landuyt
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Wim Janssens
- Laboratory of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | | | - Lode Godderis
- Laboratory of Toxicology, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium; IDEWE, External Service for Prevention and Protection at Work, B-3001, 3000, Leuven, Belgium
| | - Peter Hoet
- Laboratory of Toxicology, Unit of Environment and Health, Department of Public Health and Primary Care, KU Leuven, 3000, Leuven, Belgium.
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186
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Ahn JY, Datta S, Bandeira E, Cano M, Mallick E, Rai U, Powell B, Tian J, Witwer KW, Handa JT, Paulaitis ME. Release of extracellular vesicle miR-494-3p by ARPE-19 cells with impaired mitochondria. Biochim Biophys Acta Gen Subj 2020; 1865:129598. [PMID: 32240720 DOI: 10.1016/j.bbagen.2020.129598] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 01/31/2020] [Accepted: 03/09/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND Mitochondrial function in retinal pigmented epithelial (RPE) cells and extracellular vesicle (EV) formation/release are related through the lysosomal and exocytotic pathways that process and eliminate intracellular material, including mitochondrial fragments. We propose that RPE cells with impaired mitochondria will release EVs containing mitochondrial miRNAs that reflect the diminished capacity of mitochondria within these cells. METHODS We screened ARPE-19 cells for miRNAs that localize to the mitochondria, exhibit biological activity, and are present in EVs released by both untreated cells and cells treated with rotenone to induce mitochondrial injury. EVs were characterized by vesicle size, size distribution, presence of EV biomarkers: CD81, CD63, and syntenin-1, miRNA cargo, and number concentration of EVs released per cell. RESULTS We found that miR-494-3p was enriched in ARPE-19 mitochondria. Knockdown of miR-494-3p in ARPE-19 cells decreased ATP production and mitochondrial membrane potential in a dose-dependent manner, and decreased basal oxygen consumption rate and maximal respiratory capacity. Increased number of EVs released per cell and elevated levels of miR-494-3p in EVs released from ARPE-19 cells treated with rotenone were also measured. CONCLUSIONS ARPE-19 mitochondrial function is regulated by miR-494-3p. Elevated levels of miR-494-3p in EVs released by ARPE-19 cells indicate diminished capacity of the mitochondria within these cells. GENERAL SIGNIFICANCE EV miR-494-3p is a potential biomarker for RPE mitochondrial dysfunction, which plays a central role in non-neovascular age-related macular degeneration, and may be a diagnostic biomarker for monitoring the spread of degeneration to neighboring RPE cells in the retina.
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Affiliation(s)
- J Y Ahn
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - S Datta
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - E Bandeira
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - M Cano
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - E Mallick
- Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - U Rai
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - B Powell
- Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - J Tian
- Biostatistics Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - K W Witwer
- Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - J T Handa
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - M E Paulaitis
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America.
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187
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Neri S, Borzì RM. Molecular Mechanisms Contributing to Mesenchymal Stromal Cell Aging. Biomolecules 2020; 10:E340. [PMID: 32098040 PMCID: PMC7072652 DOI: 10.3390/biom10020340] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/13/2020] [Accepted: 02/19/2020] [Indexed: 02/07/2023] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) are a reservoir for tissue homeostasis and repair that age during organismal aging. Beside the fundamental in vivo role of MSCs, they have also emerged in the last years as extremely promising therapeutic agents for a wide variety of clinical conditions. MSC use frequently requires in vitro expansion, thus exposing cells to replicative senescence. Aging of MSCs (both in vivo and in vitro) can affect not only their replicative potential, but also their properties, like immunomodulation and secretory profile, thus possibly compromising their therapeutic effect. It is therefore of critical importance to unveil the underlying mechanisms of MSC senescence and to define shared methods to assess MSC aging status. The present review will focus on current scientific knowledge about MSC aging mechanisms, control and effects, including possible anti-aging treatments.
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Affiliation(s)
- Simona Neri
- IRCCS Istituto Ortopedico Rizzoli, Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, 40136 Bologna, Italy;
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188
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Pinho AG, Cibrão JR, Silva NA, Monteiro S, Salgado AJ. Cell Secretome: Basic Insights and Therapeutic Opportunities for CNS Disorders. Pharmaceuticals (Basel) 2020; 13:E31. [PMID: 32093352 PMCID: PMC7169381 DOI: 10.3390/ph13020031] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 02/18/2020] [Indexed: 12/13/2022] Open
Abstract
Transplantation of stem cells, in particular mesenchymal stem cells (MSCs), stands as a promising therapy for trauma, stroke or neurodegenerative conditions such as spinal cord or traumatic brain injuries (SCI or TBI), ischemic stroke (IS), or Parkinson's disease (PD). Over the last few years, cell transplantation-based approaches have started to focus on the use of cell byproducts, with a strong emphasis on cell secretome. Having this in mind, the present review discusses the current state of the art of secretome-based therapy applications in different central nervous system (CNS) pathologies. For this purpose, the following topics are discussed: (1) What are the main cell secretome sources, composition, and associated collection techniques; (2) Possible differences of the therapeutic potential of the protein and vesicular fraction of the secretome; and (3) Impact of the cell secretome on CNS-related problems such as SCI, TBI, IS, and PD. With this, we aim to clarify some of the main questions that currently exist in the field of secretome-based therapies and consequently gain new knowledge that may help in the clinical application of secretome in CNS disorders.
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Affiliation(s)
- Andreia G. Pinho
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (A.G.P.); (J.R.C.); (N.A.S.); (S.M.)
- ICVS/3B’s PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Jorge R. Cibrão
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (A.G.P.); (J.R.C.); (N.A.S.); (S.M.)
- ICVS/3B’s PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Nuno A. Silva
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (A.G.P.); (J.R.C.); (N.A.S.); (S.M.)
- ICVS/3B’s PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Susana Monteiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (A.G.P.); (J.R.C.); (N.A.S.); (S.M.)
- ICVS/3B’s PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - António J. Salgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (A.G.P.); (J.R.C.); (N.A.S.); (S.M.)
- ICVS/3B’s PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
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189
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Tarique I, Haseeb A, Bai X, Li W, Yang P, Huang Y, Yang S, Xu M, Zhang Y, Vistro WA, Fazlani SA, Chen Q. Cellular Evidence of CD63-Enriched Exosomes and Multivesicular Bodies within the Seminiferous Tubule during the Spermatogenesis of Turtles. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2020; 26:148-156. [PMID: 31753050 DOI: 10.1017/s1431927619015149] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The seminiferous tubule (ST) is the location of spermatogenesis, where mature spermatozoa are produced with the assistance of Sertoli cells. The role of extracellular vesicles in the direct communication between Sertoli-germ cells in the ST is still not fully understood. In this study, we reported multivesicular bodies (MVBs) and their source of CD63-enriched exosomes by light and ultrastructure microscopy during the reproductive phases of turtles. Strong CD63 immunopositivity was detected at the basal region in the early and luminal regions of the ST during late spermatogenesis by immunohistochemistry (IHC), immunofluorescence (IF), and western blot (WB) analysis. Labeling of CD63 was detected in the Sertoli cell cytoplasmic processes that surround the developing germ cells during early spermatogenesis and in the lumen of the ST with elongated spermatids during late spermatogenesis. Furthermore, ultrastructure analysis confirmed the existence of numerous MVBs in the Sertoli cell prolongations that surround the round and primary spermatogonia during acrosome biogenesis and with the embedded heads of spermatids in the cytoplasm of Sertoli cells. Additionally, in spermatids, Chrysanthemum flower centers (CFCs) generated isolated membranes involved in MVBs and autophagosome formation, and their fusion to form amphiosomes was also observed. Additionally, autophagy inhibition by 3-methyladenine (after 24 h) increased CD63 protein signals during late spermatogenesis, as detected by IF and WB. Collectively, our study found MVBs and CD63 rich exosomes within the Sertoli cells and their response to autophagy inhibition in the ST during the spermatogenesis in the turtle.
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Affiliation(s)
- Imran Tarique
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Abdul Haseeb
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
- Faculty of Veterinary and Animal Sciences, University of Poonch Rawalakot, Azad Kashmir, Pakistan
| | - Xuebing Bai
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Wenqian Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Ping Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Yufei Huang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Sheng Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Mengdi Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Yue Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Waseem Ali Vistro
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Surfaraz Ali Fazlani
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
| | - Qiusheng Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province210095, China
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Oshima M, Seki T, Kurauchi Y, Hisatsune A, Katsuki H. Reciprocal Regulation of Chaperone-Mediated Autophagy/Microautophagy and Exosome Release. Biol Pharm Bull 2020; 42:1394-1401. [PMID: 31366874 DOI: 10.1248/bpb.b19-00316] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Autophagy-lysosome proteolysis is involved in protein quality control and classified into macroautophagy (MA), microautophagy (mA) and chaperone-mediated autophagy (CMA), by the routes of substrate delivery to lysosomes. Both autophagy-lysosome proteolysis and exosome release are strongly associated with membrane trafficking. In the present study, we investigated how chemical and small interfering RNA (siRNA)-mediated activation and inhibition of these autophagic pathways affect exosome release in AD293 cells. Activation of MA and mA by rapamycin and activation of CMA by mycophenolic acid significantly decreased exosome release. Although lysosomal inhibitors, NH4Cl and bafilomycin A1, significantly increased exosome release, a MA inhibitor, 3-methyladenine, did not affect. Exosome release was significantly increased by the siRNA-mediated knockdown of LAMP2A, which is crucial for CMA. Inversely, activity of CMA/mA was significantly increased by the prevention of exosome release, which was induced by siRNA-mediated knockdown of Rab27a. These findings indicate that CMA/mA and exosome release are reciprocally regulated. This regulation would be the molecular basis of extracellular release and propagation of misfolded proteins in various neurodegenerative diseases.
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Affiliation(s)
- Mutsumi Oshima
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University
| | - Takahiro Seki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University
| | - Yuki Kurauchi
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University
| | - Akinori Hisatsune
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University.,Priority Organization for Innovation and Excellence, Kumamoto University.,Program for Leading Graduate Schools "HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program," Kumamoto University
| | - Hiroshi Katsuki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University
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191
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Gonzalez CD, Resnik R, Vaccaro MI. Secretory Autophagy and Its Relevance in Metabolic and Degenerative Disease. Front Endocrinol (Lausanne) 2020; 11:266. [PMID: 32477265 PMCID: PMC7232537 DOI: 10.3389/fendo.2020.00266] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 04/09/2020] [Indexed: 12/11/2022] Open
Abstract
Proteins to be secreted through so-called "conventional mechanisms" are characterized by the presence of an N-terminal peptide that is a leader or signal peptide, needed for access to the endoplasmic reticulum and the Golgi apparatus for further secretion. However, some relevant cytosolic proteins lack of this signal peptides and should be secreted by different unconventional or "non-canonical" processes. One form of this unconventional secretion was named secretory autophagy (SA) because it is specifically associated with the autophagy pathway. It is defined by ATG proteins that regulate the biogenesis of the autophagosome, its representative organelle. The canonical macroautophagy involves the fusion of the autophagosomes with lysosomes for content degradation, whereas the SA pathway bypasses this degradative process to allow the secretion. ATG5, as well as other factors involved in autophagy such as BCN1, are also activated as part of the secretory pathway. SA has been recognized as a new mechanism that is becoming of increasing relevance to explain the unconventional secretion of a series of cytosolic proteins that have critical biological importance. Also, SA may play a role in the release of aggregation-prone protein since it has been related to the autophagosome biogenesis machinery. SA requires the autophagic pathway and both, secretory autophagy and canonical degradative autophagy are at the same time, integrated and highly regulated processes that interact in ultimate cross-talking molecular mechanisms. The potential implications of alterations in SA, its cargos, pathways, and regulation in human diseases such as metabolic/aging pathological processes are predictable. Further research of SA as potential target of therapeutic intervention is deserved.
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Affiliation(s)
- Claudio Daniel Gonzalez
- Department of Pathophysiology, Institute of Biochemistry and Molecular Medicine (UBA-CONICET), School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
- CEMIC University Institute, Buenos Aires, Argentina
| | - Roxana Resnik
- Department of Pathophysiology, Institute of Biochemistry and Molecular Medicine (UBA-CONICET), School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
- CEMIC University Institute, Buenos Aires, Argentina
| | - Maria Ines Vaccaro
- Department of Pathophysiology, Institute of Biochemistry and Molecular Medicine (UBA-CONICET), School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
- CEMIC University Institute, Buenos Aires, Argentina
- *Correspondence: Maria Ines Vaccaro ;
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192
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Zhao Y, Zhang Y, Zhang J, Zhang X, Yang G. Molecular Mechanism of Autophagy: Its Role in the Therapy of Alzheimer's Disease. Curr Neuropharmacol 2020; 18:720-739. [PMID: 31934838 PMCID: PMC7536828 DOI: 10.2174/1570159x18666200114163636] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/04/2019] [Accepted: 01/11/2020] [Indexed: 12/12/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder of progressive dementia that is characterized by the accumulation of beta-amyloid (Aβ)-containing neuritic plaques and intracellular Tau protein tangles. This distinctive pathology indicates that the protein quality control is compromised in AD. Autophagy functions as a "neuronal housekeeper" that eliminates aberrant protein aggregates by wrapping then into autophagosomes and delivering them to lysosomes for degradation. Several studies have suggested that autophagy deficits in autophagy participate in the accumulation and propagation of misfolded proteins (including Aβ and Tau). In this review, we summarize current knowledge of autophagy in the pathogenesis of AD, as well as some pathways targeting the restoration of autophagy. Moreover, we discuss how these aspects can contribute to the development of disease-modifying therapies in AD.
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Affiliation(s)
| | | | | | | | - Guofeng Yang
- Address correspondence to this author at the Department of Geriatrics, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, 050000, China; Tel: +86-311-66636243; E-mail:
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193
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Abstract
Exosomes are secreted vesicles involved in signaling processes. The biogenesis of a class of these extracellular vesicles depends on syntenin, and on the interaction of this cytosolic protein with syndecans. Heparanase, largely an endosomal enzyme, acts as a regulator of the syndecan-syntenin-exosome biogenesis pathway. The upregulation of syntenin and heparanase in cancers may support the suspected roles of exosomes in tumor biology.
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194
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Cell-to-Cell Communication in Learning and Memory: From Neuro- and Glio-Transmission to Information Exchange Mediated by Extracellular Vesicles. Int J Mol Sci 2019; 21:ijms21010266. [PMID: 31906013 PMCID: PMC6982255 DOI: 10.3390/ijms21010266] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/14/2019] [Accepted: 12/28/2019] [Indexed: 02/06/2023] Open
Abstract
Most aspects of nervous system development and function rely on the continuous crosstalk between neurons and the variegated universe of non-neuronal cells surrounding them. The most extraordinary property of this cellular community is its ability to undergo adaptive modifications in response to environmental cues originating from inside or outside the body. Such ability, known as neuronal plasticity, allows long-lasting modifications of the strength, composition and efficacy of the connections between neurons, which constitutes the biochemical base for learning and memory. Nerve cells communicate with each other through both wiring (synaptic) and volume transmission of signals. It is by now clear that glial cells, and in particular astrocytes, also play critical roles in both modes by releasing different kinds of molecules (e.g., D-serine secreted by astrocytes). On the other hand, neurons produce factors that can regulate the activity of glial cells, including their ability to release regulatory molecules. In the last fifteen years it has been demonstrated that both neurons and glial cells release extracellular vesicles (EVs) of different kinds, both in physiologic and pathological conditions. Here we discuss the possible involvement of EVs in the events underlying learning and memory, in both physiologic and pathological conditions.
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195
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Yang X, Lu Q, Xu Y, Liu C, Sun Q. Clinicopathologic significance of CXCR4 expressions in patients with esophageal squamous cell carcinoma. Pathol Res Pract 2019; 216:152787. [PMID: 31859114 DOI: 10.1016/j.prp.2019.152787] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 11/26/2019] [Accepted: 12/12/2019] [Indexed: 12/18/2022]
Abstract
AIMS This study was designed to investigate the biological function of CXCR4 in esophageal squamous cell carcinoma and to explore the underlying mechanism to provide potential targets for esophageal squamous cell carcinoma. METHODS A total of 101 patients with esophageal squamous cell carcinoma were included, and the relationship between CXCR4 and clinicopathological factors was analyzed. Laser scanning confocal microscopy was used to observe numbers of autophagosomes in TE-1 cell line and the ability of proliferation and invasion were evaluated meanwhile. RESULTS CXCR4 is overexpressed in ESCC specimens and is associated with poor differentiation and lymphocyte metastasis. In the survival analysis, CXCR4 predicted a poor overall survival prognosis. The number of autophagosomes in the siR-CXCR4 group was decreased compared with negative group (P < 0.05), while was increased in the pcDNA3.1-CXCR4 group (P < 0.05).Western blot result show upregulation of LC3II, the ratio of LC3II/LC3I and Beclin1 in pcDNA3.1-CXCR4 group and decreased expression of LC3II, the ratio of LC3II/LC3I and Beclin1 in siR-CXCR4 group. Transwell assay show CXCR4 overexpression promote the invasion of TE-1 cells and was attenuated by autophagy inhibitor 3-Methyladenine.On the contrary, invasion cell numbers decreased in siR-CXCR4 group and was rescued by autophagy inducer Rapamycin. CONCLUSION CXCR4 is an indicator of poor prognosis for ESCC. CXCR4 promote autophagy and regulate cell invasion through autophagy in ESCC. Our study provides new insights for the treatment of esophageal squamous cell carcinoma and CXCR4 may serve as a therapeutic target for ESCC.
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Affiliation(s)
- Xiaoqing Yang
- Department ofPathology, The First Hospital Affiliated with Shandong First Medical University, Jinan, China
| | - Qingyang Lu
- Department of Pathology, LiaoCheng People's Hospital, LiaoCheng, China
| | - Yunfei Xu
- Department of General Surgery, Qilu Hospital of Shandong University, China
| | - Can Liu
- Shandong University Medical School, Jinan, Shandong, China
| | - Qing Sun
- Department ofPathology, The First Hospital Affiliated with Shandong First Medical University, Jinan, China.
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196
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Mathews PM, Levy E. Exosome Production Is Key to Neuronal Endosomal Pathway Integrity in Neurodegenerative Diseases. Front Neurosci 2019; 13:1347. [PMID: 31911768 PMCID: PMC6920185 DOI: 10.3389/fnins.2019.01347] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/29/2019] [Indexed: 12/28/2022] Open
Abstract
Dysfunction of the endosomal–lysosomal system is a prominent pathogenic factor in Alzheimer’s disease (AD) and other neurodevelopmental and neurodegenerative disorders. We and others have extensively characterized the neuronal endosomal pathway pathology that results from either triplication of the amyloid-β precursor protein (APP) gene in Down syndrome (DS) or from expression of the apolipoprotein E ε4 allele (APOE4), the greatest genetic risk factor for late-onset AD. More recently brain exosomes, extracellular vesicles that are generated within and released from endosomal compartments, have been shown to be altered in DS and by APOE4 expression. In this review, we discuss the emerging data arguing for an interdependence between exosome production and endosomal pathway integrity in the brain. In vitro and in vivo studies indicate that altered trafficking through the endosomal pathway or compromised cargo turnover within lysosomes can affect the production, secretion, and content of exosomes. Conversely, exosome biogenesis can affect the endosomal–lysosomal system. Indeed, we propose that efficient exosome release helps to modulate flux through the neuronal endosomal pathway by decompressing potential “traffic jams.” Exosome secretion may have the added benefit of unburdening the neuron’s lysosomal system by delivering endosomal–lysosomal material into the extracellular space, where other cell types may contribute to the degradation of neuronal debris. Thus, maintaining robust neuronal exosome production may prevent or mitigate endosomal and lysosomal abnormalities linked to aging and neurodegenerative diseases. While the current evidence suggests that the exosomal system in the brain can be modulated both by membrane lipid composition and the expression of key proteins that contribute to the formation and secretion of exosomes, how exosomal pathway-regulatory elements sense and respond to perturbations in the endosomal pathway is not well understood. Based upon findings from the extensively studied DS and APOE4 models, we propose that enhanced neuronal exosome secretion can be a protective response, reducing pathological disruption of the endosomal–lysosomal system in disease-vulnerable neurons. Developing therapeutic approaches that help to maintain or enhance neuronal exosome biogenesis and release may be beneficial in a range of disorders of the central nervous system.
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Affiliation(s)
- Paul M Mathews
- Center for Dementia Research, The Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States.,Department of Psychiatry, New York University Langone Health, New York, NY, United States.,NYU Neuroscience Institute, New York University Langone Health, New York, NY, United States
| | - Efrat Levy
- Center for Dementia Research, The Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States.,Department of Psychiatry, New York University Langone Health, New York, NY, United States.,NYU Neuroscience Institute, New York University Langone Health, New York, NY, United States.,Department of Biochemistry and Molecular Pharmacology, New York University Langone Health, New York, NY, United States
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197
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Babuta M, Furi I, Bala S, Bukong TN, Lowe P, Catalano D, Calenda C, Kodys K, Szabo G. Dysregulated Autophagy and Lysosome Function Are Linked to Exosome Production by Micro-RNA 155 in Alcoholic Liver Disease. Hepatology 2019; 70:2123-2141. [PMID: 31090940 PMCID: PMC7453183 DOI: 10.1002/hep.30766] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 05/07/2019] [Indexed: 12/17/2022]
Abstract
Cellular homeostais, that is normally maintained through autophagy, is disrupted in alcoholic liver disease (ALD). Because autophagy and exosome biogenesis share common elements, we hypothesized that increased exosome production in ALD may be linked to disruption of autophagic function. We found impaired autophagy both in ALD and alcoholic hepatitis (AH) mouse models and human livers with ALD as indicated by increased hepatic p62 and LC3-II levels. Alcohol reduced autophagy flux in vivo in chloroquine-treated mice as well as in vitro in hepatocytes and macrophages treated with bafilomycin A. Our results revealed that alcohol targets multiple steps in the autophagy pathway. Alcohol-related decrease in mechanistic target of rapamycin (mTOR) and Ras homolog enriched in brain (Rheb), that initiate autophagy, correlated with increased Beclin1 and autophagy-related protein 7 (Atg7), proteins involved in phagophore-autophagosome formation, in ALD. We found that alcohol disrupted autophagy function at the lysosomal level through decreased lysosomal-associated membrane protein 1 (LAMP1) and lysosomal-associated membrane protein 2 (LAMP2) in livers with ALD. We identified that micro-RNA 155 (miR-155), that is increased by alcohol, targets mTOR, Rheb, LAMP1, and LAMP2 in the authophagy pathway. Consistent with this, miR-155-deficient mice were protected from alcohol-induced disruption of autophagy and showed attenuated exosome production. Mechanistically, down-regulation of LAMP1 or LAMP2 increased exosome release in hepatocytes and macrophages in the presence and absence of alcohol. These results suggested that the alcohol-induced increase in exosome production was linked to disruption of autophagy and impaired autophagosome and lysosome function. Conclusion: Alcohol affects multiple genes in the autophagy pathway and impairs autophagic flux at the lysosome level in ALD. Inhibition of LAMP1 and LAMP2 promotes exosome release in ALD. We identified miR-155 as a mediator of alcohol-related regulation of autophagy and exosome production in hepatocytes and macrophages.
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Affiliation(s)
- Mrigya Babuta
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Istvan Furi
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Shashi Bala
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Terence N Bukong
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Patrick Lowe
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Donna Catalano
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Charles Calenda
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Karen Kodys
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Gyongyi Szabo
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA
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198
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Khan T, Relitti N, Brindisi M, Magnano S, Zisterer D, Gemma S, Butini S, Campiani G. Autophagy modulators for the treatment of oral and esophageal squamous cell carcinomas. Med Res Rev 2019; 40:1002-1060. [PMID: 31742748 DOI: 10.1002/med.21646] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/16/2019] [Accepted: 11/08/2019] [Indexed: 02/06/2023]
Abstract
Oral squamous cell carcinomas (OSCC) and esophageal squamous cell carcinomas (ESCC) exhibit a survival rate of less than 60% and 40%, respectively. Late-stage diagnosis and lack of effective treatment strategies make both OSCC and ESCC a significant health burden. Autophagy, a lysosome-dependent catabolic process, involves the degradation of intracellular components to maintain cell homeostasis. Targeting autophagy has been highlighted as a feasible therapeutic strategy with clinical utility in cancer treatment, although its associated regulatory mechanisms remain elusive. The detection of relevant biomarkers in biological fluids has been anticipated to facilitate early diagnosis and/or prognosis for these tumors. In this context, recent studies have indicated the presence of specific proteins and small RNAs, detectable in circulating plasma and serum, as biomarkers. Interestingly, the interplay between biomarkers (eg, exosomal microRNAs) and autophagic processes could be exploited in the quest for targeted and more effective therapies for OSCC and ESCC. In this review, we give an overview of the available biomarkers and innovative targeted therapeutic strategies, including the application of autophagy modulators in OSCC and ESCC. Additionally, we provide a viewpoint on the state of the art and on future therapeutic perspectives combining the early detection of relevant biomarkers with drug discovery for the treatment of OSCC and ESCC.
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Affiliation(s)
- Tuhina Khan
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Nicola Relitti
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Margherita Brindisi
- Department of Pharmacy, Department of Excellence 2018-2022, University of Napoli Federico IL, Napoli, Italy
| | - Stefania Magnano
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin, Dublin 2, Ireland
| | - Daniela Zisterer
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin, Dublin 2, Ireland
| | - Sandra Gemma
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Stefania Butini
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
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199
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Fan RZ, Guo M, Luo S, Cui M, Tieu K. Exosome release and neuropathology induced by α-synuclein: new insights into protective mechanisms of Drp1 inhibition. Acta Neuropathol Commun 2019; 7:184. [PMID: 31744532 PMCID: PMC6862865 DOI: 10.1186/s40478-019-0821-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 09/29/2019] [Indexed: 12/26/2022] Open
Abstract
Targeting alpha-synuclein (α-syn) as a therapeutic strategy for Parkinson’s disease (PD) has been intensively pursued largely due to its well-recognized pathogenic role. Since its discovery as the first familial link to PD over two decades ago, this protein has been associated with multiple neurotoxic mechanisms, such as mitochondrial dysfunction and impaired autophagic flux. We report here that blocking dynamin-related protein 1 (Drp1) improved both mitochondrial function and autophagic flux in experimental models of α-syn. Using rat dopaminergic neuronal cells with inducible wild-type human α-syn, we observed excessive mitochondrial fragmentation and increased Drp1 levels 48 h after gene induction. Functionally, these cells exhibited lower mitochondrial membrane potential, reduced ATP production rate and mitochondrial spare respiratory capacity, as well as increased levels of mitochondrial reactive oxygen species. To evaluate the protective role of Drp1 inhibition, we used three complementary approaches: gene silencing mediated by siRNA, overexpression of Drp1-dominant negative and the small molecule mitochondrial division inhibitor-1 (mdivi-1). Both morphological and functional defects induced by α-syn were attenuated by these strategies. Importantly, Drp1 inhibition reduced proteinase K-resistant α-syn aggregates. Based on that observation, we investigated the involvement of autophagy. Through a combination of stable autophagy reporter cells and immunoreactivity for LC3 and p62 in neuronal cells with either α-syn overexpression or treatment of human α-syn preformed fibrils (PFF), we observed that Drp1 inhibition abolished autophagic impairment induced by α-syn. Consistent with its role in improving autophagy function, Drp1 inhibition reduced exosome release and spread of α-syn pathology from neurons to neurons and from microglia to neurons. In summary, this study highlights new insights that Drp1 inhibition confers neuroprotection through both mitochondrial and autophagy-lysosomal pathways, further strengthening the therapeutic potential of targeting Drp1.
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200
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Riau AK, Ong HS, Yam GHF, Mehta JS. Sustained Delivery System for Stem Cell-Derived Exosomes. Front Pharmacol 2019; 10:1368. [PMID: 31798457 PMCID: PMC6868085 DOI: 10.3389/fphar.2019.01368] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 10/28/2019] [Indexed: 12/20/2022] Open
Abstract
Recent literature has ascribed that the paracrine action of stem cells is mediated by exosomes. Exosomes are nano-sized extracellular vesicles (30 to 100 nm) of endocytic origin that play important roles in intercellular communication. They have the ability to deliver various therapeutic effects, e.g., skin regeneration or cardiac function recovery, when applied topically or injected systemically. However, injection of exosomes has been shown to result in rapid clearance from blood circulation and accumulation of the exosomes in the liver, spleen, lung, and gastrointestinal tract can be found as early as 2 h after injection. Topical administration of exosomes on the skin or ocular surface would suffer the same fate due to rapid fluid turnover (sweat or tears). Biodegradable or highly porous hydrogels have been utilized to load exosomes and to deliver a sustained therapeutic effect. They can also prevent the exosomes from being cleared prematurely and allow the delivery of a more localized and concentrated exosome dosage by placing the hydrogel directly at or in the proximity of the target site. In this mini-review, we elaborate on the challenges of conventional exosome administration and highlight the solution to the shortcomings in the form of exosome-incorporated hydrogels. Different techniques to encapsulate exosomes and examples of hydrogels that have been used to create sustained delivery systems of exosomes are also discussed.
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Affiliation(s)
- Andri K Riau
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Hon Shing Ong
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore.,Corneal and External Eye Disease Department, Singapore National Eye Centre, Singapore, Singapore.,Ophthalmology and Visual Sciences Academic Clinical Programme, Duke-NUS Medical School, Singapore, Singapore
| | - Gary H F Yam
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore.,Ophthalmology and Visual Sciences Academic Clinical Programme, Duke-NUS Medical School, Singapore, Singapore
| | - Jodhbir S Mehta
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore.,Corneal and External Eye Disease Department, Singapore National Eye Centre, Singapore, Singapore.,Ophthalmology and Visual Sciences Academic Clinical Programme, Duke-NUS Medical School, Singapore, Singapore
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