1
|
Wang L, Li Q, Wen X, Zhang X, Wang S, Qin Q. Dissecting the early and late endosomal pathways of Singapore grouper iridovirus by single-particle tracking in living cells. Int J Biol Macromol 2024; 256:128336. [PMID: 38013078 DOI: 10.1016/j.ijbiomac.2023.128336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/10/2023] [Accepted: 11/12/2023] [Indexed: 11/29/2023]
Abstract
Iridoviruses are large DNA viruses that infect a wide range of invertebrates and lower vertebrates, causing serious threats to ecological security and aquaculture industry worldwide. However, the mechanisms underlying intracellular transport of iridovirus remain unknown. In this study, the transport of Singapore grouper iridovirus (SGIV) in early endosomes (EEs) and late endosomes (LEs) was explored by single-particle tracking technology. SGIV employs EEs to move rapidly from the cell membrane to the nucleus, and this long-range transport is divided into "slow-fast-slow" stages. SGIV within LEs mainly underwent oscillatory movements near the nucleus. Furthermore, SGIV entered newly formed EEs and LEs, respectively, possibly based on the interaction between the viral major capsid protein and Rab5/Rab7. Importantly, interruption of EEs and LEs by the dominant negative mutants of Rab5 and Rab7 significantly inhibited the movement of SGIV, suggesting the important roles of Rab5 and Rab7 in virus transport. In addition, it seems that SGIV needs to enter clathrin-coated vesicles to move from actin to microtubules before EEs carry the virus moving along microtubules. Together, our results for the first time provide a model whereby iridovirus transport depending on EEs and LEs, helping to clarify the mechanism underlying iridovirus infection, and provide a convenient tactic to investigate the dynamic infection of large DNA virus.
Collapse
Affiliation(s)
- Liqun Wang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan 512005, China
| | - Qiang Li
- College of Oceanology and meteorology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Xiaozhi Wen
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xinyue Zhang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Shaowen Wang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou 511464, China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou 511464, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266000, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China.
| |
Collapse
|
2
|
Sandner L, Alteneder M, Rica R, Woller B, Sala E, Frey T, Tosevska A, Zhu C, Madern M, Khan M, Hoffmann P, Schebesta A, Taniuchi I, Bonelli M, Schmetterer K, Iannacone M, Kuka M, Ellmeier W, Sakaguchi S, Herbst R, Boucheron N. The guanine nucleotide exchange factor Rin-like controls Tfh cell differentiation via CD28 signaling. J Exp Med 2023; 220:e20221466. [PMID: 37703004 PMCID: PMC10499045 DOI: 10.1084/jem.20221466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 06/07/2023] [Accepted: 08/21/2023] [Indexed: 09/14/2023] Open
Abstract
T follicular helper (Tfh) cells are essential for the development of germinal center B cells and high-affinity antibody-producing B cells in humans and mice. Here, we identify the guanine nucleotide exchange factor (GEF) Rin-like (Rinl) as a negative regulator of Tfh generation. Loss of Rinl leads to an increase of Tfh in aging, upon in vivo immunization and acute LCMV Armstrong infection in mice, and in human CD4+ T cell in vitro cultures. Mechanistically, adoptive transfer experiments using WT and Rinl-KO naïve CD4+ T cells unraveled T cell-intrinsic GEF-dependent functions of Rinl. Further, Rinl regulates CD28 internalization and signaling, thereby shaping CD4+ T cell activation and differentiation. Thus, our results identify the GEF Rinl as a negative regulator of global Tfh differentiation in an immunological context and species-independent manner, and furthermore, connect Rinl with CD28 internalization and signaling pathways in CD4+ T cells, demonstrating for the first time the importance of endocytic processes for Tfh differentiation.
Collapse
Affiliation(s)
- Lisa Sandner
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Marlis Alteneder
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Ramona Rica
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Barbara Woller
- Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Eleonora Sala
- School of Medicine, Vita-Salute San Raffaele University and Division of Immunology, Transplantation, and Infectious Diseases, Istituto di Ricovero e Cura a Carettere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
| | - Tobias Frey
- Department of Laboratory Medicine, Klinisches Institut für Labormedizin (KILM), Anna Spiegel Research Building, Medical University of Vienna, Vienna, Austria
| | - Anela Tosevska
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria
| | - Ci Zhu
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Moritz Madern
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Matarr Khan
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Pol Hoffmann
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Alexandra Schebesta
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Ichiro Taniuchi
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Michael Bonelli
- Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria
| | - Klaus Schmetterer
- Department of Laboratory Medicine, Klinisches Institut für Labormedizin (KILM), Anna Spiegel Research Building, Medical University of Vienna, Vienna, Austria
| | - Matteo Iannacone
- School of Medicine, Vita-Salute San Raffaele University and Division of Immunology, Transplantation, and Infectious Diseases, Istituto di Ricovero e Cura a Carettere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
- Experimental Imaging Center, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), San Raffaele Scientific Institute, Milan, Italy
| | - Mirela Kuka
- School of Medicine, Vita-Salute San Raffaele University and Division of Immunology, Transplantation, and Infectious Diseases, Istituto di Ricovero e Cura a Carettere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
| | - Wilfried Ellmeier
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Shinya Sakaguchi
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Ruth Herbst
- Institute of Specific Prophylaxis and Tropical Medicine, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Nicole Boucheron
- Division of Immunobiology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
3
|
Liao TL, Chen YM, Tang KT, Yang YY, Chen DY, Chan TH, Tsai HJ, Hsieh SL. CLEC18A Impairs Phagocytosis by Reducing FcγRIIA Expression and Arresting Autophagosome-Lysosome Fusion. Microbiol Spectr 2023; 11:e0290322. [PMID: 37154715 PMCID: PMC10269929 DOI: 10.1128/spectrum.02903-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 03/28/2023] [Indexed: 05/10/2023] Open
Abstract
Mixed cryoglobulinemia (MC) is a hepatitis C virus (HCV)-related extrahepatic manifestation that is characterized by the abnormal presence of immune complexes (ICs). This may be due to the reduced uptake and clearance of ICs. The C-type lectin member 18A (CLEC18A) is a secretory protein that is expressed abundantly in hepatocytes. We previously observed that CLEC18A increased significantly in the phagocytes and sera of patients with HCV, particularly those with MC. Herein, we explored the biological functions of CLEC18A in the MC syndrome development of patients with HCV by using an in vitro cell-based assay with quantitative reverse transcription-PCR, immunoblotting, immunofluorescence, flow cytometry, and enzyme-linked immunosorbent assays. HCV infection or Toll-like receptor 3/7/8 activation could induce CLEC18A expression in Huh7.5 cells. Upregulated CLEC18A interacts with Rab5 and Rab7 and enhances type I/III interferon production to inhibit HCV replication in hepatocytes. However, overexpressed CLEC18A suppressed phagocytic activity in phagocytes. Significantly decreased levels of the Fc gamma receptor (FcγR) IIA were found in the neutrophils of HCV patients, particularly in those with MC (P < 0.005). We demonstrated that CLEC18A could inhibit FcγRIIA expression in a dose-dependent manner through the production of NOX-2-dependent reactive oxygen species to impair the uptake of ICs. Additionally, CLEC18A suppresses the Rab7 expression that is induced by starvation. Overexpressed CLEC18A does not affect autophagosome formation but does reduce the recruitment of Rab7 to autophagosomes, thereby retarding the maturation of autophagosomes and affecting autophagosome-lysosome fusion. We offer a novel molecular machinery with which to understand the association of HCV infection with autoimmunity and propose that CLEC18A may act as a candidate biomarker for HCV-associated MC. IMPORTANCE During infection, the host immune system produces cellular factors to protect against pathogen invasion. However, when the immune response overreacts and there is dysregulated cytokine homeostasis, autoimmunity occurs following an infection. We identified a cellular factor that is involved in HCV-related extrahepatic manifestation, namely, CLEC18A, which is expressed abundantly in hepatocytes and phagocytes. It inhibits HCV replication in hepatocytes by interacting with Rab5/7 and enhancing type I/III IFN expression. However, overexpressed CLEC18A inhibited FcγRIIA expression in phagocytes to impair phagocytosis. Furthermore, the interaction between CLEC18A and Rab5/7 may reduce the recruitment of Rab7 to autophagosomes and thereby retard autophagosome maturation and cause immune complex accumulation. A decreasing trend in CLEC18A levels that was accompanied by reduced HCV RNA titers and diminished cryoglobulin was observed in the sera of HCV-MC patients after direct-acting antiviral therapy. CLEC18A may be used for the evaluation of anti-HCV therapeutic drug effects and could be a potential predisposing factor for the development of MC syndrome.
Collapse
Affiliation(s)
- Tsai-Ling Liao
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
- Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yi-Ming Chen
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
- Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Kuo-Tung Tang
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ying-Ying Yang
- Division of Gastroenterology and Hepatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Der-Yuan Chen
- Rheumatology and Immunology Center, China Medical University Hospital, Taichung, Taiwan
- Translational Medicine Laboratory, Rheumatology and Immunology Center, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Tsung-Hsien Chan
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Hui-Ju Tsai
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shie-Liang Hsieh
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Immunology Research Center, National Health Research Institutes, Zhunan, Miaoli, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan
| |
Collapse
|
4
|
Yong X, Jia G, Liu Z, Zhou C, Yi J, Tang Y, Chen L, Chen L, Wang Y, Sun Q, Billadeau D, Su Z, Jia D. Cryo-EM structure of the Mon1-Ccz1-RMC1 complex reveals molecular basis of metazoan RAB7A activation. Proc Natl Acad Sci U S A 2023; 120:e2301725120. [PMID: 37216550 PMCID: PMC10235969 DOI: 10.1073/pnas.2301725120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/18/2023] [Indexed: 05/24/2023] Open
Abstract
Understanding of the evolution of metazoans from their unicellular ancestors is a fundamental question in biology. In contrast to fungi which utilize the Mon1-Ccz1 dimeric complex to activate the small GTPase RAB7A, metazoans rely on the Mon1-Ccz1-RMC1 trimeric complex. Here, we report a near-atomic resolution cryogenic-electron microscopy structure of the Drosophila Mon1-Ccz1-RMC1 complex. RMC1 acts as a scaffolding subunit and binds to both Mon1 and Ccz1 on the surface opposite to the RAB7A-binding site, with many of the RMC1-contacting residues from Mon1 and Ccz1 unique to metazoans, explaining the binding specificity. Significantly, the assembly of RMC1 with Mon1-Ccz1 is required for cellular RAB7A activation, autophagic functions and organismal development in zebrafish. Our studies offer a molecular explanation for the different degree of subunit conservation across species, and provide an excellent example of how metazoan-specific proteins take over existing functions in unicellular organisms.
Collapse
Affiliation(s)
- Xin Yong
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| | - Guowen Jia
- Department of Geriatrics and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University610044Chengdu, China
| | - Zhe Liu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| | - Chunzhuang Zhou
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| | - Jiamin Yi
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| | - Yingying Tang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| | - Li Chen
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| | - Lu Chen
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| | - Yuan Wang
- Department of Geriatrics and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University610044Chengdu, China
| | - Qingxiang Sun
- Department of Geriatrics and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University610044Chengdu, China
| | - Daniel D. Billadeau
- Division of Oncology Research and Schulze Center for Novel Therapeutics, Mayo Clinic, Rochester, MN55905
| | - Zhaoming Su
- Department of Geriatrics and National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University610044Chengdu, China
| | - Da Jia
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu610041, China
| |
Collapse
|
5
|
Abdelsalam M, Ahmed M, Osaid Z, Hamoudi R, Harati R. Insights into Exosome Transport through the Blood-Brain Barrier and the Potential Therapeutical Applications in Brain Diseases. Pharmaceuticals (Basel) 2023; 16:571. [PMID: 37111328 PMCID: PMC10144189 DOI: 10.3390/ph16040571] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Drug delivery to the central nervous system (CNS) is limited due to the presence of the blood-brain barrier (BBB), a selective physiological barrier located at the brain microvessels that regulates the flow of cells, molecules and ions between the blood and the brain. Exosomes are nanosized extracellular vesicles expressed by all cell types and that function as cargos, allowing for communication between the cells. The exosomes were shown to cross or regulate the BBB in healthy and disease conditions. However, the mechanistic pathways by which exosomes cross the BBB have not been fully elucidated yet. In this review, we explore the transport mechanisms of exosomes through the BBB. A large body of evidence suggests that exosome transport through the BBB occurs primarily through transcytosis. The transcytosis mechanisms are influenced by several regulators. Inflammation and metastasis also enhance exosome trafficking across the BBB. We also shed light on the therapeutical applications of exosomes for treating brain diseases. Further investigations are essential to provide clearer insights related to trafficking of exosomes across the BBB and disease treatment.
Collapse
Affiliation(s)
- Manal Abdelsalam
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (M.A.); (M.A.); (Z.O.)
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Munazza Ahmed
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (M.A.); (M.A.); (Z.O.)
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Zaynab Osaid
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (M.A.); (M.A.); (Z.O.)
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Rifat Hamoudi
- Clinical Sciences Department, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates;
- Division of Surgery and Interventional Science, University College London, London W1W 7EJ, UK
| | - Rania Harati
- Department of Pharmacy Practice and Pharmacotherapeutics, College of Pharmacy, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates; (M.A.); (M.A.); (Z.O.)
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| |
Collapse
|
6
|
Muto H, Honda T, Tanaka T, Yokoyama S, Yamamoto K, Ito T, Imai N, Ishizu Y, Maeda K, Ishikawa T, Adachi S, Sato C, Tsuji NM, Ishigami M, Fujishiro M, Kawashima H. Proteomic Analysis Reveals Changes in Tight Junctions in the Small Intestinal Epithelium of Mice Fed a High-Fat Diet. Nutrients 2023; 15:nu15061473. [PMID: 36986203 PMCID: PMC10056729 DOI: 10.3390/nu15061473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/10/2023] [Accepted: 03/17/2023] [Indexed: 03/22/2023] Open
Abstract
The impact of a high-fat diet (HFD) on intestinal permeability has been well established. When bacteria and their metabolites from the intestinal tract flow into the portal vein, inflammation in the liver is triggered. However, the exact mechanism behind the development of a leaky gut caused by an HFD is unclear. In this study, we investigated the mechanism underlying the leaky gut related to an HFD. C57BL/6J mice were fed an HFD or control diet for 24 weeks, and their small intestine epithelial cells (IECs) were analyzed using deep quantitative proteomics. A significant increase in fat accumulation in the liver and a trend toward increased intestinal permeability were observed in the HFD group compared to the control group. Proteomics analysis of the upper small intestine epithelial cells identified 3684 proteins, of which 1032 were differentially expressed proteins (DEPs). Functional analysis of DEPs showed significant enrichment of proteins related to endocytosis, protein transport, and tight junctions (TJ). Expression of Cldn7 was inversely correlated with intestinal barrier function and strongly correlated with that of Epcam. This study will make important foundational contributions by providing a comprehensive depiction of protein expression in IECs affected by HFD, including an indication that the Epcam/Cldn7 complex plays a role in leaky gut.
Collapse
Affiliation(s)
- Hisanori Muto
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Takashi Honda
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Taku Tanaka
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Shinya Yokoyama
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Kenta Yamamoto
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Takanori Ito
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Norihiro Imai
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Yoji Ishizu
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Keiko Maeda
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Tetsuya Ishikawa
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Shungo Adachi
- Biological Systems Control Team, Biomedicinal Information Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26 Aomi, Koto-ku, Tokyo 135-0064, Japan
| | - Chikara Sato
- School of Integrative and Global Majors (SIGMA), Tsukuba University, 1-1-1 Tennodai, Tsukuba 305-8577, Japan
- Biological Science Course, Graduate School of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuou-ku, Sagamihara 252-5258, Japan
- Division of Immune Homeostasis, Department of Pathology and Microbiology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamimachi, Itabashi, Tokyo 173-8610, Japan
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamimachi, Itabashi, Tokyo 173-8610, Japan
- Division of Cellular and Molecular Engineering, Department of Life Technology and Science, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8560, Japan
| | - Noriko M Tsuji
- Division of Immune Homeostasis, Department of Pathology and Microbiology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamimachi, Itabashi, Tokyo 173-8610, Japan
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamimachi, Itabashi, Tokyo 173-8610, Japan
- Division of Cellular and Molecular Engineering, Department of Life Technology and Science, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8560, Japan
- Microbiology and Immunology, School of Dentistry at Matsudo, Nihon University, 22-870-1 Sakae-cho-nishi, Tokyo 271-8587, Japan
- Department of Food Science, Jumonji University, 2-1-28 Sugasawa, Niiza 352-8510, Japan
| | - Masatoshi Ishigami
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Mitsuhiro Fujishiro
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroki Kawashima
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan
| |
Collapse
|
7
|
Rab7 Investigation Insights into the Existence of White Spot Syndrome Virus in Crustaceans: An In Silico Approach. Adv Virol 2022; 2022:3887441. [PMID: 36313590 PMCID: PMC9613395 DOI: 10.1155/2022/3887441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022] Open
Abstract
In this study, previously published Rab7 sequences from National Center for Biotechnology Information (NCBI) have been investigated from chordates, mollusks, annelids, cnidarians, amphibians, priapulids, brachiopods, and arthropods including decapods and other groups. Among decapod crustacean isolates, amino acid variations were found in 13 locations. Penaeid shrimps had variations in positions 13 (I ⟶ J), 22 (T ⟶ A), 124 (G ⟶ X), and 149 (V ⟶ X) while interestingly the freshwater prawn and mitten crab both had amino acid substitutions in positions 87 (V ⟶ C) and 95 (T ⟶ S) along with the other disagreements in amino acid positions 178 (S ⟶ N), 201 (D ⟶ E), 181 (E ⟶ D), 182 (L ⟶ I), 183 (Y ⟶ G), 184 (N ⟶ H), and 198 (A ⟶ T). Among 100 isolates of Rab7 from organisms of various phyla, mutations were observed in several positions. These mutations caused variations in hydrophobicity and isoelectric point which impact the ligand-protein binding affinity. Some common mutations were found in the organisms of the same phylum and among different phyla. Homology modeling of Rab7 proteins from different organisms was done using SWISS-MODEL and validated further by developing Ramachandran plots. Protein-protein docking showed that active residues were there in the binding interfaces of Rab7 from organisms of seven different phyla and VP28 of WSSV. Similarities were observed in the Rab7-VP28 complexes in those selected organisms which differed from the Rab7-VP28 complex in the case of Penaeid shrimp. The findings of this study suggest that WSSV may exist in different marine organisms that have Rab7 protein and transmit to crustaceans like shrimps and crabs which are of commercial importance.
Collapse
|
8
|
Amyloidogenesis and Neurotrophic Dysfunction in Alzheimer’s Disease: Do They have a Common Regulating Pathway? Cells 2022; 11:cells11203201. [PMID: 36291068 PMCID: PMC9600014 DOI: 10.3390/cells11203201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/07/2022] [Accepted: 10/09/2022] [Indexed: 11/17/2022] Open
Abstract
The amyloid cascade hypothesis has predominately been used to describe the pathogenesis of Alzheimer’s disease (AD) for decades, as Aβ oligomers are thought to be the prime cause of AD. Meanwhile, the neurotrophic factor hypothesis has also been proposed for decades. Accumulating evidence states that the amyloidogenic process and neurotrophic dysfunction are mutually influenced and may coincidently cause the onset and progress of AD. Meanwhile, there are intracellular regulators participating both in the amyloidogenic process and neurotrophic pathways, which might be the common original causes of amyloidogenesis and neurotrophic dysfunction. In this review, the current understanding regarding the role of neurotrophic dysfunction and the amyloidogenic process in AD pathology is briefly summarized. The mutual influence of these two pathogenesis pathways and their potential common causal pathway are further discussed. Therapeutic strategies targeting the common pathways to simultaneously prevent amyloidogenesis and neurotrophic dysfunction might be anticipated for the disease-modifying treatment of AD.
Collapse
|
9
|
Francis CR, Kushner EJ. Capturing membrane trafficking events during 3D angiogenic development in vitro. Microcirculation 2022; 29:e12726. [PMID: 34415654 PMCID: PMC8858330 DOI: 10.1111/micc.12726] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 08/10/2021] [Accepted: 08/16/2021] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Vesicular trafficking dictates protein localization, functional activity, and half-life, providing a critically important regulatory step in tissue development; however, there is little information detailing endothelial-specific trafficking signatures. This is due, in part, to limitations in visualizing trafficking events in endothelial tissues. Our aim in this investigation was to explore the use of a 3-dimensional (3D) in vitro sprouting model to image endothelial membrane trafficking events. METHODS Endothelial cells were challenged to grow sprouts in a fibrin bead assay. Thereafter, spouts were transfected with fluorescent proteins and stained for various cell markers. Sprouts were then imaged for trafficking events using live and fixed-cell microscopy. RESULTS Our results demonstrate that fibrin bead sprouts have a strong apicobasal polarity marked by apical localization of proteins moesin and podocalyxin. Comparison of trafficking mediators Rab27a and Rab35 between 3D sprouts and 2D culture showed that vesicular carriers can be imaged at high resolution, exhibiting proper membrane polarity solely in 3D sprouts. Lastly, we imaged exocytic events of von Willebrand Factor and demonstrated a distinct imaging advantage for monitoring secretion events in 3D sprouts as compared with 2D culture. CONCLUSIONS Our results establish that the fibrin bead sprouting assay is well-suited for imaging of trafficking events during angiogenic growth.
Collapse
Affiliation(s)
| | - Erich J. Kushner
- Department of Biological SciencesUniversity of DenverDenverColoradoUSA
| |
Collapse
|
10
|
Francis CR, Kincross H, Kushner EJ. Rab35 governs apicobasal polarity through regulation of actin dynamics during sprouting angiogenesis. Nat Commun 2022; 13:5276. [PMID: 36075898 PMCID: PMC9458672 DOI: 10.1038/s41467-022-32853-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 08/17/2022] [Indexed: 12/01/2022] Open
Abstract
In early blood vessel development, trafficking programs, such as those using Rab GTPases, are tasked with delivering vesicular cargo with high spatiotemporal accuracy. However, the function of many Rab trafficking proteins remain ill-defined in endothelial tissue; therefore, their relevance to blood vessel development is unknown. Rab35 has been shown to play an enigmatic role in cellular behaviors which differs greatly between tissue-type and organism. Importantly, Rab35 has never been characterized for its potential contribution in sprouting angiogenesis; thus, our goal was to map Rab35’s primary function in angiogenesis. Our results demonstrate that Rab35 is critical for sprout formation; in its absence, apicobasal polarity is entirely lost in vitro and in vivo. To determine mechanism, we systematically explored established Rab35 effectors and show that none are operative in endothelial cells. However, we find that Rab35 partners with DENNd1c, an evolutionarily divergent guanine exchange factor, to localize to actin. Here, Rab35 regulates actin polymerization through limiting Rac1 and RhoA activity, which is required to set up proper apicobasal polarity during sprout formation. Our findings establish that Rab35 is a potent brake of actin remodeling during blood vessel development. The promiscuous GTPase Rab35 has been shown to be involved in many important cellular functions. In this article, Francis et al. illustrate how Rab35 acts as a critical brake to actin remodeling during sprouting angiogenesis and how it is necessary for proper blood vessel development.
Collapse
Affiliation(s)
- Caitlin R Francis
- Department of Biological Sciences, University of Denver, Denver, CO, USA
| | - Hayle Kincross
- Department of Biological Sciences, University of Denver, Denver, CO, USA
| | - Erich J Kushner
- Department of Biological Sciences, University of Denver, Denver, CO, USA.
| |
Collapse
|
11
|
Kumari S, Dash PK, Kumari T, Guo ML, Ghosh JK, Buch SJ, Tripathi RK. HIV-1 Nef hijacks both exocytic and endocytic pathways of host intracellular trafficking through differential regulation of Rab GTPases. Biol Cell 2022; 114:276-292. [PMID: 35713972 DOI: 10.1111/boc.202100027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 12/01/2022]
Abstract
HIV-1 Nef regulates several cellular functions in an infected cell which results in viral persistence and AIDS pathogenesis. The currently understood molecular mechanism(s) underlying Nef-dependent cellular function(s) are unable to explain how events are coordinately regulated in the host cell. Intracellular membranous trafficking maintains cellular homeostasis and is regulated by Rab GTPases - a member of the Ras superfamily. In the current study, we tried to decipher the role of Nef on the Rab GTPases-dependent complex and vesicular trafficking. Expression profiling of Rabs in Nef-expressing cells showed that Nef differentially regulates the expression of individual Rabs in a cell-specific manner. Further analysis of Rabs in HIV-1NL4-3 or ΔNef infected cells demonstrated that the Nef protein is responsible for variation in Rabs expression. Using a panel of competitive peptide inhibitors against Nef, we identified the critical domain of HIV-1 Nef involved in modulation of Rabs expression. The molecular function of Nef-mediated upregulation of Rab5 and Rab7 and downregulation of Rab11 increased the transport of SERINC5 from the cell surface to the lysosomal compartment. Moreover, the Nef-dependent increase in Rab27 expression assists exosome release. Reversal of Rabs expression using competitive inhibitors against Nef and manipulation of Rabs expression reduced viral release and infectivity of progeny virions. Overall, this study demonstrates that Nef differentially regulates the expression of Rab proteins in HIV-1 infected cells to hijack the host intracellular trafficking, which augments viral replication and HIV-1 pathogenesis. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Sushila Kumari
- Virus Research and Therapeutics Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| | - Prasanta K Dash
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, USA
| | - Tripti Kumari
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| | - Ming-Lei Guo
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jimut Kanti Ghosh
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| | - Shilpa J Buch
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, USA
| | - Raj Kamal Tripathi
- Virus Research and Therapeutics Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| |
Collapse
|
12
|
Wang J, Luo X, Lu J, Wang X, Miao Y, Li Q, Wang L. Rab22a promotes the proliferation, migration, and invasion of lung adenocarcinoma via up-regulating PI3K/Akt/mTOR signaling pathway. Exp Cell Res 2022; 416:113179. [PMID: 35487271 DOI: 10.1016/j.yexcr.2022.113179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/16/2022] [Accepted: 04/23/2022] [Indexed: 11/04/2022]
Abstract
Rab22a, a member of the proto-oncogene RAS family, belongs to the Rab5 subfamily. It participates in early endosome formation and regulates vesicle trafficking. The relationship between Rab22a and tumorigenesis remains elusive. In non-small cell lung cancer specimens, immunohistochemical staining showed consistently high expression of Rab22a in lung adenocarcinoma, but not in squamous cell carcinoma. In lung adenocarcinoma cell lines, A549 and H1299, transfection with Rab22a significantly promoted cell proliferation, migration, and invasion, whereas interference with Rab22a specific siRNA significantly inhibited the above capacities. Transfection with Rab22a also up-regulated the phosphorylation levels of core effector proteins on the PI3K/Akt/mTOR pathway. The Co-IP assay further confirmed the interaction between Rab22a and PI3Kp85α, the core regulatory subunit of PI3K. Application of rapamycin, the mTOR inhibitor, significantly reduced the upregulation of the proliferation, migration, and invasion abilities of lung adenocarcinoma cells transfected with Rab22a. These results suggest that Rab22a can promote the malignant phenotype of lung adenocarcinoma by upregulating the PI3K/Akt/mTOR signaling pathway, and may function as a potential anti-tumor therapeutic target.
Collapse
Affiliation(s)
- Jinping Wang
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Xue Luo
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Jinxi Lu
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Xi Wang
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Yuan Miao
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Qingchang Li
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Liang Wang
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| |
Collapse
|
13
|
Francis CR, Kushner EJ. Trafficking in blood vessel development. Angiogenesis 2022; 25:291-305. [PMID: 35449244 PMCID: PMC9249721 DOI: 10.1007/s10456-022-09838-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/03/2022] [Indexed: 02/17/2023]
Abstract
Blood vessels demonstrate a multitude of complex signaling programs that work in concert to produce functional vasculature networks during development. A known, but less widely studied, area of endothelial cell regulation is vesicular trafficking, also termed sorting. After moving through the Golgi apparatus, proteins are shuttled to organelles, plugged into membranes, recycled, or degraded depending on the internal and extrinsic cues. A snapshot of these protein-sorting systems can be viewed as a trafficking signature that is not only unique to endothelial tissue, but critically important for blood vessel form and function. In this review, we will cover how vesicular trafficking impacts various aspects of angiogenesis, such as sprouting, lumen formation, vessel stabilization, and secretion, emphasizing the role of Rab GTPase family members and their various effectors.
Collapse
Affiliation(s)
- Caitlin R Francis
- Department of Biological Sciences, University of Denver, Denver, CO, 80210, USA
| | - Erich J Kushner
- Department of Biological Sciences, University of Denver, Denver, CO, 80210, USA.
| |
Collapse
|
14
|
Hatstat AK, Quan B, Bailey MA, Fitzgerald MC, Reinhart MC, McCafferty DG. Chemoproteomic-enabled characterization of small GTPase Rab1a as a target of an N-arylbenzimidazole ligand's rescue of Parkinson's-associated cell toxicity. RSC Chem Biol 2022; 3:96-111. [PMID: 35128413 PMCID: PMC8729260 DOI: 10.1039/d1cb00103e] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 11/08/2021] [Indexed: 11/21/2022] Open
Abstract
The development of phenotypic models of Parkinson's disease (PD) has enabled screening and identification of phenotypically active small molecules that restore complex biological pathways affected by PD toxicity.
Collapse
Affiliation(s)
| | - Baiyi Quan
- Department of Chemistry, Duke University, Durham, NC 27708, USA
| | | | | | | | | |
Collapse
|
15
|
Hatstat AK, Pupi MD, Reinhart MC, McCafferty DG. Small Molecule Improvement of Trafficking Defects in Models of Neurodegeneration. ACS Chem Neurosci 2021; 12:3972-3984. [PMID: 34652126 DOI: 10.1021/acschemneuro.1c00524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Disrupted cellular trafficking and transport processes are hallmarks of many neurodegenerative disorders (NDs). Recently, efforts have been made toward developing and implementing experimental platforms to identify small molecules that may help restore normative trafficking functions. There have been a number of successes in targeting endomembrane trafficking with the identification of compounds that restore cell viability through rescue of protein transport and trafficking. Here, we describe some of the experimental platforms implemented for small molecule screening efforts for rescue of trafficking defects in neurodegeneration. A survey of phenotypically active small molecules identified to date is provided, including a summary of medicinal chemistry efforts and insights into putative targets and mechanisms of action. In particular, emphasis is put on ligands that demonstrate activity in more than one model of neurodegeneration as retention of phenotypic activity across ND models suggests conservation of biological targets across NDs.
Collapse
Affiliation(s)
- A. Katherine Hatstat
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Michael D. Pupi
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Michaela C. Reinhart
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Dewey G. McCafferty
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| |
Collapse
|
16
|
Macur K, Zieschang S, Lei S, Morsey B, Jaquet S, Belshan M, Fox HS, Ciborowski P. SWATH-MS and MRM: Quantification of Ras-related proteins in HIV-1 infected and methamphetamine-exposed human monocyte-derived macrophages (hMDM). Proteomics 2021; 21:e2100005. [PMID: 34051048 PMCID: PMC9977323 DOI: 10.1002/pmic.202100005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/30/2022]
Abstract
HIV-1 infection of macrophages is a multistep and multifactorial process that has been shown to be enhanced by exposure to methamphetamine (Meth). In this study, we sought to identify the underlying mechanisms of this effect by quantifying the effect of Meth on the proteome of HIV-1-infected macrophages using sequential windowed acquisition of all theoretical fragment ion mass spectra (SWATH-MS) approach. The analyses identified several members of the Rab family of proteins as being dysregulated by Meth treatment, which was confirmed by bioinformatic analyses that indicated substantial alteration of vesicular transport pathways. Validation of the SWATH-MS was performed using an MRM based approach, which confirmed that Meth exposure affects expression of the Rab proteins. However, the pattern of expression changes were highly dynamic, and displayed high donor-to-donor variability. Surprisingly a similar phenomenon was observed for Actin. Our results demonstrate that Meth affects vesicular transport pathways, suggesting a possible molecular mechanism underlying its effect on HIV infection hMDM and a potential broader effect of Meth on cellular homeostasis.
Collapse
Affiliation(s)
- Katarzyna Macur
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE,Core Facility Laboratories, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, Poland
| | - Sarah Zieschang
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Shulei Lei
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Brenda Morsey
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Spencer Jaquet
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Michael Belshan
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE
| | - Howard S. Fox
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Pawel Ciborowski
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE,Corresponding author: Dr. Pawel Ciborowski, Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, 985800 University of Nebraska Medical Center, Omaha, NE 68198-5800, phone +1 (402) 559-3733, fax +1 (402) 559-7495
| |
Collapse
|
17
|
Heidarzadeh M, Gürsoy-Özdemir Y, Kaya M, Eslami Abriz A, Zarebkohan A, Rahbarghazi R, Sokullu E. Exosomal delivery of therapeutic modulators through the blood-brain barrier; promise and pitfalls. Cell Biosci 2021; 11:142. [PMID: 34294165 PMCID: PMC8296716 DOI: 10.1186/s13578-021-00650-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 07/05/2021] [Indexed: 12/16/2022] Open
Abstract
Nowadays, a large population around the world, especially the elderly, suffers from neurological inflammatory and degenerative disorders/diseases. Current drug delivery strategies are facing different challenges because of the presence of the BBB, which limits the transport of various substances and cells to brain parenchyma. Additionally, the low rate of successful cell transplantation to the brain injury sites leads to efforts to find alternative therapies. Stem cell byproducts such as exosomes are touted as natural nano-drug carriers with 50-100 nm in diameter. These nano-sized particles could harbor and transfer a plethora of therapeutic agents and biological cargos to the brain. These nanoparticles would offer a solution to maintain paracrine cell-to-cell communications under healthy and inflammatory conditions. The main question is that the existence of the intact BBB could limit exosomal trafficking. Does BBB possess some molecular mechanisms that facilitate the exosomal delivery compared to the circulating cell? Although preliminary studies have shown that exosomes could cross the BBB, the exact molecular mechanism(s) beyond this phenomenon remains unclear. In this review, we tried to compile some facts about exosome delivery through the BBB and propose some mechanisms that regulate exosomal cross in pathological and physiological conditions.
Collapse
Affiliation(s)
- Morteza Heidarzadeh
- Koç University Research Center for Translational Medicine (KUTTAM), Rumeli Feneri, 34450, Sariyer, Istanbul, Turkey
| | - Yasemin Gürsoy-Özdemir
- Koç University Research Center for Translational Medicine (KUTTAM), Rumeli Feneri, 34450, Sariyer, Istanbul, Turkey.,Neurology Department, Koç University School of Medicine, Rumeli Feneri, 34450, Sariyer, Istanbul, Turkey
| | - Mehmet Kaya
- Koç University Research Center for Translational Medicine (KUTTAM), Rumeli Feneri, 34450, Sariyer, Istanbul, Turkey.,Physiology Department, Koç University School of Medicine, Rumeli Feneri, 34450, Sariyer, Istanbul, Turkey
| | - Aysan Eslami Abriz
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Zarebkohan
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Emel Sokullu
- Koç University Research Center for Translational Medicine (KUTTAM), Rumeli Feneri, 34450, Sariyer, Istanbul, Turkey. .,Biophysics Department, Koç University School of Medicine, Rumeli Feneri, 34450, Sariyer, Istanbul, Turkey.
| |
Collapse
|
18
|
Koss DJ, Campesan S, Giorgini F, Outeiro TF. Dysfunction of RAB39B-Mediated Vesicular Trafficking in Lewy Body Diseases. Mov Disord 2021; 36:1744-1758. [PMID: 33939203 DOI: 10.1002/mds.28605] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/09/2021] [Accepted: 03/12/2021] [Indexed: 12/16/2022] Open
Abstract
Intracellular vesicular trafficking is essential for neuronal development, function, and homeostasis and serves to process, direct, and sort proteins, lipids, and other cargo throughout the cell. This intricate system of membrane trafficking between different compartments is tightly orchestrated by Ras analog in brain (RAB) GTPases and their effectors. Of the 66 members of the RAB family in humans, many have been implicated in neurodegenerative diseases and impairment of their functions contributes to cellular stress, protein aggregation, and death. Critically, RAB39B loss-of-function mutations are known to be associated with X-linked intellectual disability and with rare early-onset Parkinson's disease. Moreover, recent studies have highlighted altered RAB39B expression in idiopathic cases of several Lewy body diseases (LBDs). This review contextualizes the role of RAB proteins in LBDs and highlights the consequences of RAB39B impairment in terms of endosomal trafficking, neurite outgrowth, synaptic maturation, autophagy, as well as alpha-synuclein homeostasis. Additionally, the potential for therapeutic intervention is examined via a discussion of the recent progress towards the development of specific RAB modulators. © 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
Collapse
Affiliation(s)
- David J Koss
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Susanna Campesan
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester, UK
| | - Flaviano Giorgini
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester, UK
| | - Tiago F Outeiro
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.,Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Goettingen, Goettingen, Germany.,Max Planck Institute for Experimental Medicine, Goettingen, Germany.,Scientific employee with a honorary contract at Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Göttingen, Germany
| |
Collapse
|
19
|
Ramazi S, Zahiri J. Posttranslational modifications in proteins: resources, tools and prediction methods. DATABASE-THE JOURNAL OF BIOLOGICAL DATABASES AND CURATION 2021; 2021:6214407. [PMID: 33826699 DOI: 10.1093/database/baab012] [Citation(s) in RCA: 235] [Impact Index Per Article: 78.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 02/20/2021] [Indexed: 12/21/2022]
Abstract
Posttranslational modifications (PTMs) refer to amino acid side chain modification in some proteins after their biosynthesis. There are more than 400 different types of PTMs affecting many aspects of protein functions. Such modifications happen as crucial molecular regulatory mechanisms to regulate diverse cellular processes. These processes have a significant impact on the structure and function of proteins. Disruption in PTMs can lead to the dysfunction of vital biological processes and hence to various diseases. High-throughput experimental methods for discovery of PTMs are very laborious and time-consuming. Therefore, there is an urgent need for computational methods and powerful tools to predict PTMs. There are vast amounts of PTMs data, which are publicly accessible through many online databases. In this survey, we comprehensively reviewed the major online databases and related tools. The current challenges of computational methods were reviewed in detail as well.
Collapse
Affiliation(s)
- Shahin Ramazi
- Bioinformatics and Computational Omics Lab (BioCOOL), Department of Biophysics, Faculty of Biological Sciences Tarbiat Modares University, Jalal Ale Ahmad Highway, P.O. Box: 14115-111, Tehran, Iran
| | - Javad Zahiri
- Bioinformatics and Computational Omics Lab (BioCOOL), Department of Biophysics, Faculty of Biological Sciences Tarbiat Modares University, Jalal Ale Ahmad Highway, P.O. Box: 14115-111, Tehran, Iran
- Department of Neuroscience, University of California San Diego, La Jolla, CA, USA
- Department of Pediatrics, University of California San Diego, La Jolla, CA, USA
| |
Collapse
|
20
|
Mohtashami M, Razavi A, Abolhassani H, Aghamohammadi A, Yazdani R. Primary Immunodeficiency and Thrombocytopenia. Int Rev Immunol 2021; 41:135-159. [PMID: 33464134 DOI: 10.1080/08830185.2020.1868454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Primary immunodeficiency (PID) or Inborn errors of immunity (IEI) refers to a heterogeneous group of disorders characterized by immune system impairment. Although patients with IEI manifest highly variable symptoms, the most common clinical manifestations are recurrent infections, autoimmunity and malignancies. Some patients present hematological abnormality including thrombocytopenia due to different pathogenic mechanisms. This review focuses on primary and secondary thrombocytopenia as a complication, which can occur in IEI. Based on the International Union of Immunological Societies phenotypic classification for IEI, the several innate and adaptive immunodeficiency disorders can lead to thrombocytopenia. This review, for the first time, describes manifestation, mechanism and therapeutic modalities for thrombocytopenia in different classes of IEI.
Collapse
Affiliation(s)
- Maryam Mohtashami
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.,Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Tehran, Iran
| | - Azadehsadat Razavi
- Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Tehran, Iran.,Department of Animal Biology, Faculty of Biology Sciences, University of Kharazmi, Tehran, Iran.,Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Hassan Abolhassani
- Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Tehran, Iran.,Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Asghar Aghamohammadi
- Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Yazdani
- Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
21
|
Roy M, Roux S. Rab GTPases in Osteoclastic Bone Resorption and Autophagy. Int J Mol Sci 2020; 21:ijms21207655. [PMID: 33081155 PMCID: PMC7589333 DOI: 10.3390/ijms21207655] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/11/2020] [Accepted: 10/13/2020] [Indexed: 12/17/2022] Open
Abstract
Small guanosine triphosphate hydrolases (GTPases) of the Rab family are involved in plasma membrane delivery, fusion events, and lysosomal and autophagic degradation pathways, thereby regulating signaling pathways and cell differentiation and function. Osteoclasts are bone-resorbing cells that maintain bone homeostasis. Polarized vesicular trafficking pathways result in the formation of the ruffled border, the osteoclast’s resorptive organelle, which also assists in transcytosis. Here, we reviewed the different roles of Rab GTPases in the endomembrane machinery of osteoclasts and in bone diseases caused by the dysfunction of these proteins, with a particular focus on autophagy and bone resorption. Understanding the molecular mechanisms underlying osteoclast-related bone disease development is critical for developing and improving therapies.
Collapse
|
22
|
Taefehshokr N, Yin C, Heit B. Rab GTPases in the differential processing of phagocytosed pathogens versus efferocytosed apoptotic cells. Histol Histopathol 2020; 36:123-135. [PMID: 32990320 DOI: 10.14670/hh-18-252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Phagocytosis is an important feature of innate immunity in which invading microorganisms are engulfed, killed and degraded - and in some immune cells, their antigens presented to adaptive immune system. A closely related process, efferocytosis, removes apoptotic cells, and is essential for the maintenance of homeostasis. Both phagocytosis and efferocytosis are tightly regulated processes that involve target recognition and uptake through specific receptors, followed by endolysosomal trafficking and processing of the internalized target. Central to the uptake and trafficking of these targets are the Rab family of small GTPases, which coordinate the engulfment and trafficking of both phagocytosed and efferocytosed materials through the endolysosomal system. Because of this regulatory function, Rab GTPases are often targeted by pathogens to escape phagocytosis. In this review, we will discuss the shared and differential roles of Rab GTPases in phagocytosis and efferocytosis.
Collapse
Affiliation(s)
- Nima Taefehshokr
- Department of Microbiology and Immunology, Center for Human Immunology, The University of Western Ontario, London, Ontario, Canada
| | - Charles Yin
- Department of Microbiology and Immunology, Center for Human Immunology, The University of Western Ontario, London, Ontario, Canada
| | - Bryan Heit
- Department of Microbiology and Immunology, Center for Human Immunology, The University of Western Ontario, London, Ontario, Canada. .,Associate Scientist, Robarts Research Institute, London, Ontario, Canada
| |
Collapse
|
23
|
Pasterkamp RJ, Burk K. Axon guidance receptors: Endocytosis, trafficking and downstream signaling from endosomes. Prog Neurobiol 2020; 198:101916. [PMID: 32991957 DOI: 10.1016/j.pneurobio.2020.101916] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/06/2020] [Accepted: 09/21/2020] [Indexed: 02/06/2023]
Abstract
During the development of the nervous system, axons extend through complex environments. Growth cones at the axon tip allow axons to find and innervate their appropriate targets and form functional synapses. Axon pathfinding requires axons to respond to guidance signals and these cues need to be detected by specialized receptors followed by intracellular signal integration and translation. Several downstream signaling pathways have been identified for axon guidance receptors and it has become evident that these pathways are often initiated from intracellular vesicles called endosomes. Endosomes allow receptors to traffic intracellularly, re-locating receptors from one cellular region to another. The localization of axon guidance receptors to endosomal compartments is crucial for their function, signaling output and expression levels. For example, active receptors within endosomes can recruit downstream proteins to the endosomal membrane and facilitate signaling. Also, endosomal trafficking can re-locate receptors back to the plasma membrane to allow re-activation or mediate downregulation of receptor signaling via degradation. Accumulating evidence suggests that axon guidance receptors do not follow a pre-set default trafficking route but may change their localization within endosomes. This re-routing appears to be spatially and temporally regulated, either by expression of adaptor proteins or co-receptors. These findings shed light on how signaling in axon guidance is regulated and diversified - a mechanism which explains how a limited set of guidance cues can help to establish billions of neuronal connections. In this review, we summarize and discuss our current knowledge of axon guidance receptor trafficking and provide directions for future research.
Collapse
Affiliation(s)
- R J Pasterkamp
- Department of Translational Neuroscience, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht University, 3584 CG Utrecht, the Netherlands.
| | - K Burk
- Department of Neurology, University Medical Center Göttingen, 37075 Göttingen, Germany; Center for Biostructural Imaging of Neurodegeneration, 37075 Göttingen, Germany.
| |
Collapse
|
24
|
Germann UA, Alam JJ. P38α MAPK Signaling-A Robust Therapeutic Target for Rab5-Mediated Neurodegenerative Disease. Int J Mol Sci 2020; 21:E5485. [PMID: 32751991 PMCID: PMC7432772 DOI: 10.3390/ijms21155485] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/25/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022] Open
Abstract
Multifactorial pathologies, involving one or more aggregated protein(s) and neuroinflammation are common in major neurodegenerative diseases, such as Alzheimer's disease and dementia with Lewy bodies. This complexity of multiple pathogenic drivers is one potential explanation for the lack of success or, at best, the partial therapeutic effects, respectively, with approaches that have targeted one specific driver, e.g., amyloid-beta, in Alzheimer's disease. Since the endosome-associated protein Rab5 appears to be a convergence point for many, if not all the most prominent pathogenic drivers, it has emerged as a major therapeutic target for neurodegenerative disease. Further, since the alpha isoform of p38 mitogen-activated protein kinase (p38α) is a major regulator of Rab5 activity and its effectors, a biology that is distinct from the classical nuclear targets of p38 signaling, brain-penetrant selective p38α kinase inhibitors provide the opportunity for significant therapeutic advances in neurogenerative disease through normalizing dysregulated Rab5 activity. In this review, we provide a brief summary of the role of Rab5 in the cell and its association with neurodegenerative disease pathogenesis. We then discuss the connection between Rab5 and p38α and summarize the evidence that through modulating Rab5 activity there are therapeutic opportunities in neurodegenerative diseases for p38α kinase inhibitors.
Collapse
|
25
|
Jian Z, Zhang L, Jin L, Lan W, Zhang W, Gao G. Rab5 regulates the proliferation, migration and invasion of glioma cells via cyclin E. Oncol Lett 2020; 20:1055-1062. [PMID: 32724343 PMCID: PMC7377158 DOI: 10.3892/ol.2020.11660] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 08/29/2020] [Indexed: 12/23/2022] Open
Abstract
Glioma is the most common and lethal type of primary brain tumor, with a high mortality and recurrence rate. Rab5, which serves as a classic ontogenetic gene, is highly expressed in various types of tumor, including lung cancer, hepatocellular carcinoma and ovarian cancer. However, the exact role and the underlying mechanism of Rab5 in glioma remain unknown. Herein, the role of Rab5 in the tumorigenesis and metastasis of glioma cells was investigated. The upregulation of Rab5 in glioma tissues and cells was observed. The expression of Rab5 was positively associated with proliferation, migration and invasion of glioma cells. Moreover, Rab5 was involved in the cell cycle of glioma cells via the regulation of cyclin E. Data presented in the present study suggest Rab5 as a potential novel diagnostic and prognosis marker of glioma.
Collapse
Affiliation(s)
- Zhao Jian
- Department of Neurosurgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Lianglong Zhang
- Department of Neurosurgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Liang Jin
- Department of Neurosurgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Weitu Lan
- Department of Neurosurgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Wei Zhang
- Department of Neurosurgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| | - Guiyan Gao
- Department of Neurosurgery, Cangzhou People's Hospital, Cangzhou, Hebei 061000, P.R. China
| |
Collapse
|
26
|
Tubbesing K, Ward J, Abini-Agbomson R, Malhotra A, Rudkouskaya A, Warren J, Lamar J, Martino N, Adam AP, Barroso M. Complex Rab4-Mediated Regulation of Endosomal Size and EGFR Activation. Mol Cancer Res 2020; 18:757-773. [PMID: 32019812 PMCID: PMC7526990 DOI: 10.1158/1541-7786.mcr-19-0052] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 09/24/2019] [Accepted: 01/30/2020] [Indexed: 11/16/2022]
Abstract
Early sorting endosomes are responsible for the trafficking and function of transferrin receptor (TfR) and EGFR. These receptors play important roles in iron uptake and signaling and are critical for breast cancer development. However, the role of morphology, receptor composition, and signaling of early endosomes in breast cancer remains poorly understood. A novel population of enlarged early endosomes was identified in breast cancer cells and tumor xenografts but not in noncancerous MCF10A cells. Quantitative analysis of endosomal morphology, cargo sorting, EGFR activation, and Rab GTPase regulation was performed using super-resolution and confocal microscopy followed by 3D rendering. MDA-MB-231 breast cancer cells have fewer, but larger EEA1-positive early endosomes compared with MCF10A cells. Live-cell imaging indicated dysregulated cargo sorting, because EGF and Tf traffic together via enlarged endosomes in MDA-MB-231, but not in MCF10A. Large EEA1-positive MDA-MB-231 endosomes exhibited prolonged and increased EGF-induced activation of EGFR upon phosphorylation at tyrosine-1068 (EGFR-p1068). Rab4A overexpression in MCF10A cells produced EEA1-positive enlarged endosomes that displayed prolonged and amplified EGF-induced EGFR-p1068 activation. Knockdown of Rab4A lead to increased endosomal size in MCF10A, but not in MDA-MB-231 cells. Nevertheless, Rab4A knockdown resulted in enhanced EGF-induced activation of EGFR-p1068 in MDA-MB-231 as well as downstream signaling in MCF10A cells. Altogether, this extensive characterization of early endosomes in breast cancer cells has identified a Rab4-modulated enlarged early endosomal compartment as the site of prolonged and increased EGFR activation. IMPLICATIONS: Enlarged early endosomes play a Rab4-modulated role in regulation of EGFR activation in breast cancer cells.
Collapse
Affiliation(s)
- Kate Tubbesing
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Jamie Ward
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Raymond Abini-Agbomson
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Aditi Malhotra
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Alena Rudkouskaya
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Janine Warren
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - John Lamar
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Nina Martino
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Alejandro P Adam
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
- Department of Ophthalmology, Albany Medical College, Albany, New York
| | - Margarida Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York.
| |
Collapse
|
27
|
Integrin linked kinase regulates endosomal recycling of N-cadherin in melanoma cells. Cell Signal 2020; 72:109642. [PMID: 32305668 DOI: 10.1016/j.cellsig.2020.109642] [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: 12/19/2019] [Revised: 03/20/2020] [Accepted: 04/15/2020] [Indexed: 02/07/2023]
Abstract
Malignant transformation is characterized by a phenotype "switch" from E- to N-cadherin - a major hallmark of epithelial to mesenchymal transition (EMT). The increased expression of N-cadherin is commonly followed by a growing capacity for migration as well as resistance to apoptosis. Integrin Linked Kinase (ILK) is a key molecule involved in EMT and progression of cancer cells. ILK is known as a major signaling mediator involved in cadherin switch, but the specific mechanism through which ILK modulates N-cadherin expression is still not clear. Studies were carried out on human melanoma WM793 and 1205Lu cell lines. Expression of proteins was analyzed using PCR and Western Blot; siRNA transfection was done for ILK. Analysis of cell signaling pathways was monitored with phospho-specific antibodies. Subcellular localization of protein was studied using the ProteoExtract Subcellular Kit and Western blot analysis. Our data show that ILK knockdown by siRNA did suppress N-cadherin expression in melanoma, but only at the protein level. The ILK silencing-induced decrease of N-cadherin membranous expression in melanoma highlights the likely crucial role of ILK in the coordination of membrane trafficking through alteration of Rab expression. It is essential to understand the molecular mechanism of increased N-cadherin expression in cancer to possibly use it in the search of new therapeutic targets.
Collapse
|
28
|
Beijer D, Sisto A, Van Lent J, Baets J, Timmerman V. Defects in Axonal Transport in Inherited Neuropathies. J Neuromuscul Dis 2020; 6:401-419. [PMID: 31561383 PMCID: PMC6918914 DOI: 10.3233/jnd-190427] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Axonal transport is a highly complex process essential for sustaining proper neuronal functioning. Disturbances can result in an altered neuronal homeostasis, aggregation of cargoes, and ultimately a dying-back degeneration of neurons. The impact of dysfunction in axonal transport is shown by genetic defects in key proteins causing a broad spectrum of neurodegenerative diseases, including inherited peripheral neuropathies. In this review, we provide an overview of the cytoskeletal components, molecular motors and adaptor proteins involved in axonal transport mechanisms and their implication in neuronal functioning. In addition, we discuss the involvement of axonal transport dysfunction in neurodegenerative diseases with a particular focus on inherited peripheral neuropathies. Lastly, we address some recent scientific advances most notably in therapeutic strategies employed in the area of axonal transport, patient-derived iPSC models, in vivo animal models, antisense-oligonucleotide treatments, and novel chemical compounds.
Collapse
Affiliation(s)
- Danique Beijer
- Neurogenetics Research Group, Department of Medical Sciences, University of Antwerp, Antwerpen, Belgium.,Neurogenetics Laboratory, Institute Born Bunge, Antwerpen, Belgium
| | - Angela Sisto
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerpen, Belgium.,Neurogenetics Laboratory, Institute Born Bunge, Antwerpen, Belgium
| | - Jonas Van Lent
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerpen, Belgium.,Neurogenetics Laboratory, Institute Born Bunge, Antwerpen, Belgium
| | - Jonathan Baets
- Neurogenetics Research Group, Department of Medical Sciences, University of Antwerp, Antwerpen, Belgium.,Neurogenetics Laboratory, Institute Born Bunge, Antwerpen, Belgium.,Neurology Department, University Hospital Antwerp, Antwerpen, Belgium
| | - Vincent Timmerman
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerpen, Belgium.,Neurogenetics Laboratory, Institute Born Bunge, Antwerpen, Belgium
| |
Collapse
|
29
|
Affiliation(s)
| | - Helen R. Mott
- Department of Biochemistry University of Cambridge Cambridge UK
| | - Darerca Owen
- Department of Biochemistry University of Cambridge Cambridge UK
| |
Collapse
|
30
|
Salgado-Polo F, van Veen M, van den Broek B, Jalink K, Leyton-Puig D, Perrakis A, Moolenaar WH, Matas-Rico E. Sequence-dependent trafficking and activity of GDE2, a GPI-specific phospholipase promoting neuronal differentiation. J Cell Sci 2020; 133:jcs235044. [PMID: 31932507 PMCID: PMC7033719 DOI: 10.1242/jcs.235044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 12/19/2019] [Indexed: 12/12/2022] Open
Abstract
GDE2 (also known as GDPD5) is a multispanning membrane phosphodiesterase with phospholipase D-like activity that cleaves select glycosylphosphatidylinositol (GPI)-anchored proteins and thereby promotes neuronal differentiation both in vitro and in vivo GDE2 is a prognostic marker in neuroblastoma, while loss of GDE2 leads to progressive neurodegeneration in mice; however, its regulation remains unclear. Here, we report that, in immature neuronal cells, GDE2 undergoes constitutive endocytosis and travels back along both fast and slow recycling routes. GDE2 trafficking is directed by C-terminal tail sequences that determine the ability of GDE2 to cleave GPI-anchored glypican-6 (GPC6) and induce a neuronal differentiation program. Specifically, we define a GDE2 truncation mutant that shows aberrant recycling and is dysfunctional, whereas a consecutive deletion results in cell-surface retention and gain of GDE2 function, thus uncovering distinctive regulatory sequences. Moreover, we identify a C-terminal leucine residue in a unique motif that is essential for GDE2 internalization. These findings establish a mechanistic link between GDE2 neuronal function and sequence-dependent trafficking, a crucial process gone awry in neurodegenerative diseases.This article has an associated First Person interview with the first author of the paper.
Collapse
Affiliation(s)
- Fernando Salgado-Polo
- Division of Biochemistry, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Michiel van Veen
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Bram van den Broek
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Kees Jalink
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Daniela Leyton-Puig
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Anastassis Perrakis
- Division of Biochemistry, Oncode Institute, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Wouter H Moolenaar
- Division of Biochemistry, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Elisa Matas-Rico
- Division of Biochemistry, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| |
Collapse
|
31
|
Yousaf M, Ali M. Modulation of ABCG2 surface expression by Rab5 and Rab21 to overcome multidrug resistance in cancer cells. Xenobiotica 2020; 50:988-996. [PMID: 31928387 DOI: 10.1080/00498254.2020.1716107] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Human ABCG2 is a half transporter implicated in drug efflux and development of multidrug resistance (MDR) in cancer cells. Here we present the regulatory effects of early endocytic Rab GTPases, Rab5A and Rab21 on ABCG2.ABCG2 was stably expressed in MCF-7 cells (MCF-7/G2). Rab5A and Rab21 were manipulated in MCF-7/G2 cells by co-expression or siRNA knockdown and their effect on ABCG2-mediated drug efflux was quantified using fluorescence microscopy.The ectopically expressed ABCG2 was predominantly confined to the plasma membrane and was capable of drug efflux. Expression of constitutively active Rab5A-Q79L mutant in MCF-7/G2 cells decreased the cell surface expression of ABCG2, resulting in the reduction of ABCG2-mediated drug efflux. In contrast, expression of inactive Rab5A-S34N mutant enhanced cell surface expression of ABCG2 and drug efflux. Moreover, reduction in endogenous Rab21 levels in MCF-7/G2 cells by siRNA knockdown, increased the surface localisation of ABCG2. Consequently, efflux ability of cells increased and intracellular retention of doxorubicin and Hoechst 33342; substrates of ABCG2, decreased significantly.These findings suggest that Rab5A and Rab21 play important roles in regulating ABCG2 surface localisation and turnover and can be exploited as a potential strategy to overcome MDR in cancer cells.
Collapse
Affiliation(s)
- Maryam Yousaf
- Institute of Biochemistry and Biotechnology, Quaid e Azam Campus, University of the Punjab, Lahore, Pakistan
| | - Moazzam Ali
- Institute of Biochemistry and Biotechnology, Quaid e Azam Campus, University of the Punjab, Lahore, Pakistan
| |
Collapse
|
32
|
Wang L, Yang B, Jiang H, Yu G, Feng M, Lu X, Luo Q, Wu H, Zhang S, Liu H. The molecular mechanism study of insulin in promoting wound healing under high-glucose conditions. J Cell Biochem 2019; 120:16244-16253. [PMID: 31081255 DOI: 10.1002/jcb.28905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/15/2019] [Accepted: 03/22/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Wound healing is a complex process in bone development. The aim of this study was to explore the molecular mechanism study of insulin in promoting wound healing. METHODS Firstly, the acute human monocyte leukemia cell lines were induced to differentiate into macrophages. Secondly, the porphyromonas gingivalis was applied to mix with the differentiated macrophages. Thirdly, the effect of different concentrations of insulin (0 ng/mL, 5 ng/mL, 50 ng/mL, 100 ng/mL, 200 ng/mL, 500 ng/mL, and 1,000 ng/mL) on the phagocytosis of macrophages and production of reactive oxygen species was investigated. Depending on these experiments, the optimal insulin concentration was used to treat the macrophages at different time points (0 hours and 0.5 hours) to identify the differentially expressed mRNAs. Finally, functional analysis including gene ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) and protein-protein interaction (PPI) analysis was carried out to explore the biological function of these differentially expressed mRNAs. RESULTS The test of phagocytosis function and production of reactive oxygen species showed that 200 ng/mL insulin treatment had a significant influence on antibacterial and production of reactive oxygen species. In RNA sequencing, a total of 415 (245 upregulated and 170 downregulated) differentially expressed mRNAs were identified between different time points. Two important signaling pathways including endocytosis and systemic lupus erythematosus were found in the KEGG enrichment analysis. In the PPI network, several hub proteins encoded by differentially expressed mRNA including ALB, HIP1R, RAB5A, HIST1H2BJ, HIST1H3G, and HIST1H2BO were identified. CONCLUSION Our work demonstrated that several differentially expressed mRNAs, such as EGR1, RAB34, ALB, HIP1R, RAB5A, HIST1H2BJ, HIST1H3G, and HIST1H2BO and two important signaling pathways including endocytosis and systemic lupus erythematosus may play important roles in the bone wound healing.
Collapse
Affiliation(s)
- Lin Wang
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Bai Yang
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Hua Jiang
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Guo Yu
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Mi Feng
- Department of applied chemistry, Chinese Academy of sciences key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.,Department of applied chemistry, College of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Xingmei Lu
- Department of chemical engineering and technology, Chinese Academy of sciences key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.,Department of chemical engineering and technology, College of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Qiang Luo
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Hao Wu
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Shuo Zhang
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Hongchen Liu
- Department of Stomatology, General Hospital of Chinese People's Liberation Army, Beijing, China
| |
Collapse
|
33
|
Rab25 and RCP in cancer progression. Arch Pharm Res 2019; 42:101-112. [DOI: 10.1007/s12272-019-01129-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 01/29/2019] [Indexed: 01/10/2023]
|
34
|
Yao XC, Xue X, Zhang HT, Zhu MM, Yang XW, Wu CF, Yang JY. Pseudoginsenoside‐F11 alleviates oligomeric β‐amyloid‐induced endosome‐lysosome defects in microglia. Traffic 2018; 20:61-70. [DOI: 10.1111/tra.12620] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Xue C. Yao
- Department of PharmacologyShenyang Pharmaceutical University Shenyang PR China
| | - Xue Xue
- State Key Laboratory of Medicinal Chemical Biology, College of PharmacyNankai University Tianjin PR China
| | - Hao T. Zhang
- Department of PharmacologyShenyang Pharmaceutical University Shenyang PR China
| | - Ming M. Zhu
- Department of PharmacologyShenyang Pharmaceutical University Shenyang PR China
| | - Xiao W. Yang
- Department of PharmacologyShenyang Pharmaceutical University Shenyang PR China
| | - Chun F. Wu
- Department of PharmacologyShenyang Pharmaceutical University Shenyang PR China
| | - Jing Y. Yang
- Department of PharmacologyShenyang Pharmaceutical University Shenyang PR China
| |
Collapse
|
35
|
Xia Y, Xie Y, Yu Z, Xiao H, Jiang G, Zhou X, Yang Y, Li X, Zhao M, Li L, Zheng M, Han S, Zong Z, Meng X, Deng H, Ye H, Fa Y, Wu H, Oldfield E, Hu X, Liu W, Shi Y, Zhang Y. The Mevalonate Pathway Is a Druggable Target for Vaccine Adjuvant Discovery. Cell 2018; 175:1059-1073.e21. [PMID: 30270039 DOI: 10.1016/j.cell.2018.08.070] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 08/13/2018] [Accepted: 08/30/2018] [Indexed: 01/02/2023]
Abstract
Motivated by the clinical observation that interruption of the mevalonate pathway stimulates immune responses, we hypothesized that this pathway may function as a druggable target for vaccine adjuvant discovery. We found that lipophilic statin drugs and rationally designed bisphosphonates that target three distinct enzymes in the mevalonate pathway have potent adjuvant activities in mice and cynomolgus monkeys. These inhibitors function independently of conventional "danger sensing." Instead, they inhibit the geranylgeranylation of small GTPases, including Rab5 in antigen-presenting cells, resulting in arrested endosomal maturation, prolonged antigen retention, enhanced antigen presentation, and T cell activation. Additionally, inhibiting the mevalonate pathway enhances antigen-specific anti-tumor immunity, inducing both Th1 and cytolytic T cell responses. As demonstrated in multiple mouse cancer models, the mevalonate pathway inhibitors are robust for cancer vaccinations and synergize with anti-PD-1 antibodies. Our research thus defines the mevalonate pathway as a druggable target for vaccine adjuvants and cancer immunotherapies.
Collapse
Affiliation(s)
- Yun Xia
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China; Joint Graduate Program of Peking-Tsinghua-NIBS, School of Life Sciences, Tsinghua University, 100084 Beijing, China
| | - Yonghua Xie
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China
| | - Zhengsen Yu
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China
| | - Hongying Xiao
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China; Joint Graduate Program of Peking-Tsinghua-NIBS, School of Life Sciences, Tsinghua University, 100084 Beijing, China; Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Guimei Jiang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China; Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Xiaoying Zhou
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China
| | - Yunyun Yang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China
| | - Xin Li
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China; Joint Graduate Program of Peking-Tsinghua-NIBS, School of Life Sciences, Tsinghua University, 100084 Beijing, China
| | - Meng Zhao
- Joint Graduate Program of Peking-Tsinghua-NIBS, School of Life Sciences, Tsinghua University, 100084 Beijing, China; MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, 100084 Beijing, China
| | - Liping Li
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China
| | - Mingke Zheng
- Institute for Immunology and School of Medicine, Tsinghua University, 100084 Beijing, China
| | - Shuai Han
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China
| | - Zhaoyun Zong
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, 100084 Beijing, China
| | - Xianbin Meng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, 100084 Beijing, China
| | - Haiteng Deng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, 100084 Beijing, China
| | - Huahu Ye
- Laboratory Animal Center, Academy of Military Medical Sciences, 100071 Beijing, China
| | - Yunzhi Fa
- Laboratory Animal Center, Academy of Military Medical Sciences, 100071 Beijing, China
| | - Haitao Wu
- Department of Neurobiology, Beijing Institute of Basic Medical Sciences, Academy of Military Medical Sciences, 100850 Beijing, China
| | - Eric Oldfield
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Xiaoyu Hu
- Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, 610041 Sichuan, China; Institute for Immunology and School of Medicine, Tsinghua University, 100084 Beijing, China
| | - Wanli Liu
- MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, 100084 Beijing, China; Institute for Immunology and School of Medicine, Tsinghua University, 100084 Beijing, China.
| | - Yan Shi
- Institute for Immunology and School of Medicine, Tsinghua University, 100084 Beijing, China; Institute Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute, University of Calgary, Calgary, AB, Canada.
| | - Yonghui Zhang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, China; Joint Graduate Program of Peking-Tsinghua-NIBS, School of Life Sciences, Tsinghua University, 100084 Beijing, China; Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, 610041 Sichuan, China.
| |
Collapse
|
36
|
Rab GTPases in Osteoclastic Endomembrane Systems. BIOMED RESEARCH INTERNATIONAL 2018; 2018:4541538. [PMID: 30186859 PMCID: PMC6114073 DOI: 10.1155/2018/4541538] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 07/18/2018] [Indexed: 12/13/2022]
Abstract
Osteoclasts (OCs) are bone-resorbing cells that maintain bone homeostasis. OC differentiation, survival, and activity are regulated by numerous small GTPases, including those of the Rab family, which are involved in plasma membrane delivery and lysosomal and autophagic degradation pathways. In resorbing OCs, polarized vesicular trafficking pathways also result in formation of the ruffled membrane, the resorbing organelle, and in transcytosis.
Collapse
|
37
|
Palsuledesai CC, Surviladze Z, Waller A, Miscioscia TF, Guo Y, Wu Y, Strouse J, Romero E, Salas VM, Curpan R, Young S, Carter M, Foutz T, Galochkina Z, Ames H, Haynes MK, Edwards BS, Nicolotti O, Luo L, Ursu O, Bologa CG, Oprea TI, Wandinger-Ness A, Sklar LA. Activation of Rho Family GTPases by Small Molecules. ACS Chem Biol 2018; 13:1514-1524. [PMID: 29746086 PMCID: PMC6006448 DOI: 10.1021/acschembio.8b00038] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
Ras
and Ras-related small GTPases are key regulators of diverse
cellular functions that impact cell growth, survival, motility, morphogenesis,
and differentiation. They are important targets for studies of disease
mechanisms as well as drug discovery. Here, we report the characterization
of small molecule agonists of one or more of six Rho, Rab, and Ras
family GTPases that were first identified through flow cytometry-based,
multiplexed high-throughput screening of 200000 compounds. The activators
were categorized into three distinct chemical families that are represented
by three lead compounds having the highest activity. Virtual screening
predicted additional compounds with potential GTPase activating properties.
Secondary dose–response assays performed on compounds identified
through these screens confirmed agonist activity of 43 compounds.
While the lead and second most active small molecules acted as pan
activators of multiple GTPase subfamilies, others showed partial selectivity
for Ras and Rab proteins. The compounds did not stimulate nucleotide
exchange by guanine nucleotide exchange factors and did not protect
against GAP-stimulated GTP hydrolysis. The activating properties were
caused by a reversible stabilization of the GTP-bound state and prolonged
effector protein interactions. Notably, these compounds were active
both in vitro and in cell-based assays, and small
molecule-mediated changes in Rho GTPase activities were directly coupled
to measurable changes in cytoskeletal rearrangements that dictate
cell morphology.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Ramona Curpan
- Institute of Chemistry, Romanian Academy, Timisoara, Romania
| | | | | | | | | | | | | | | | | | - Li Luo
- Division of Epidemiology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, New Mexico 87131, United States
| | | | | | | | | | | |
Collapse
|
38
|
Mateus D, Marini ES, Progida C, Bakke O. Rab7a modulates ER stress and ER morphology. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1865:781-793. [DOI: 10.1016/j.bbamcr.2018.02.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 02/15/2018] [Accepted: 02/28/2018] [Indexed: 02/08/2023]
|
39
|
Rab34 regulates adhesion, migration, and invasion of breast cancer cells. Oncogene 2018; 37:3698-3714. [PMID: 29622794 DOI: 10.1038/s41388-018-0202-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 01/07/2018] [Accepted: 02/03/2018] [Indexed: 02/06/2023]
Abstract
The small GTPase Rab34 regulates spatial distribution of the lysosomes, secretion, and macropinocytosis. In this study, we found that Rab34 is over-expressed in aggressive breast cancer cells, implying a potential role of Rab34 in breast cancer. Silencing Rab34 by shRNA inhibits cell migration, invasion, and adhesion of breast cancer cells. Rab34 specifically binds to the cytoplasmic tail of integrin β3, and depletion of Rab34 promotes the degradation of integrin β3. Interestingly, EGF induces the translocation of Rab34 to the membrane ruffle, which is greatly enhanced by the expression of Src kinase. Accordingly, Rab34 is tyrosine phosphorylated by Src at Y247 residue. A mutant mimicking phosphorylated form of Rab34 (Rab34Y247D) promotes cell migration and invasion. Importantly, the tyrosine phosphorylation of Rab34 is inhibited in cells in suspension, and increased with the cells re-adhesion. In addition, Rab34Y247D promotes cell adhesion, and enhances integrin β3 endocytosis and recycling. The results uncover a role of Rab34 in migration and invasion of breast cancer cells and its involvement in cancer metastasis, and provide a novel mechanism of tyrosine phosphorylation of Rab34 in regulating cell migration, invasion, and adhesion through modulating the endocytosis, stability, and recycling of integrin β3.
Collapse
|
40
|
Chen XQ, Sawa M, Mobley WC. Dysregulation of neurotrophin signaling in the pathogenesis of Alzheimer disease and of Alzheimer disease in Down syndrome. Free Radic Biol Med 2018; 114:52-61. [PMID: 29031834 PMCID: PMC5748266 DOI: 10.1016/j.freeradbiomed.2017.10.341] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/05/2017] [Accepted: 10/10/2017] [Indexed: 12/15/2022]
Abstract
Neurotrophic factors, including the members of the neurotrophin family, play important roles in the development and maintenance of the nervous system. Trophic factor signals must be transmitted over long distances from axons and dendrites to the cell bodies of neurons. A mode of signaling well suited to the challenge of robust long distance signaling is the signaling endosome. We review the biology of signaling endosomes and the "signaling endosome hypothesis". Evidence for disruption of signaling endosome function in disorders of the nervous system is also reviewed. Changes in endosome structure in Alzheimer disease (AD) and Down syndrome (DS) are present early in these disorders. Data for the APP products responsible are reviewed and the consequent changes in signaling from endosomes discussed. We conclude by pointing to the need for additional studies to explore the biology of signaling endosomes in normal neurons and to elucidate their role in the pathogenesis of neurodegeneration.
Collapse
Affiliation(s)
- Xu-Qiao Chen
- University of California, San Diego, La Jolla, CA 92093, United States.
| | - Mariko Sawa
- University of California, San Diego, La Jolla, CA 92093, United States
| | - William C Mobley
- University of California, San Diego, La Jolla, CA 92093, United States.
| |
Collapse
|
41
|
Chen L, Wang H, Li X, Nie C, Liang T, Xie F, Liu K, Peng X, Xie J. Highly hydrophilic carbon nanoparticles: uptake mechanism by mammalian and plant cells. RSC Adv 2018; 8:35246-35256. [PMID: 35547047 PMCID: PMC9087372 DOI: 10.1039/c8ra06665e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/25/2018] [Indexed: 11/25/2022] Open
Abstract
As one of the carbon based materials, the potential application of carbon nanoparticles (CNPs) has emerged in the promotion of plant growth. However, knowledge on the biological mechanism of how the CNPs interact with plant cells is limited. In this study, nanostructures of CNPs were examined. The particles exhibited particulate morphology and their size distribution was in the range of 18 to 70 nm, with an average size of 30 nm. Hydrophilic groups of COOH and OH were present on the surface of CNPs, and CNPs showed the common feature of graphitic sp2 hybridization carbons. The CNPs were determined to be biocompatible with these two cell lines, mammalian cells (A549 cells) and plant cells (BY-2 cells). The COOH groups on the surface of CNPs were functionalized via covalent binding with a fluorescent dye for improvement of the fluorescence. The fluorescent carbon nanoparticles (FCNPs) were found to cross the cell membrane and enter cells (A549 cells and BY-2 cells) in an energy-dependent manner. Subsequently, the mechanism of FCNPs interaction with the cell membrane was evaluated in the presence of inhibitors that specifically affect different endocytosis membrane proteins. The FCNPs mainly entered A549 cells through caveolin-mediated endocytosis and macropinocytosis, and clathrin-dependent endocytosis was also involved in the transportation of the FCNPs. Clathrin-independent endocytosis mediated in the internalization of FCNPs in BY-2 cells. The way FCNPs entering cells will provide a fundamental understanding of the influence of CNPs on cell membrane. Carbon nanoparticles entered cells via different endocytic pathways depending on the cell type.![]()
Collapse
Affiliation(s)
- Lijuan Chen
- Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- China
| | - Hongbo Wang
- Key Laboratory of Tobacco Chemistry
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- China
| | - Xiang Li
- Key Laboratory of Tobacco Chemistry
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- China
| | - Cong Nie
- Key Laboratory of Tobacco Chemistry
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- China
| | - Taibo Liang
- Key Laboratory of Ecological Environment and Tobacco Quality
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- China
| | - Fuwei Xie
- Key Laboratory of Tobacco Chemistry
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- China
| | - Kejian Liu
- Key Laboratory of Tobacco Chemistry
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian
- China
| | - Jianping Xie
- Key Laboratory of Tobacco Chemistry
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou
- China
| |
Collapse
|
42
|
Martinez-Carreres L, Nasrallah A, Fajas L. Cancer: Linking Powerhouses to Suicidal Bags. Front Oncol 2017; 7:204. [PMID: 28932704 PMCID: PMC5592205 DOI: 10.3389/fonc.2017.00204] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/21/2017] [Indexed: 11/26/2022] Open
Abstract
Membrane-bound organelles are integrated into cellular networks and work together for a common goal: regulating cell metabolism, cell signaling pathways, cell fate, cellular maintenance, and pathogen defense. Many of these interactions are well established, but little is known about the interplay between mitochondria and lysosomes, and their deregulation in cancer. The present review focuses on the common signaling pathways of both organelles, as well as the processes in which they both physically interact, their changes under pathological conditions, and the impact on targeting those organelles for treating cancer.
Collapse
Affiliation(s)
- Laia Martinez-Carreres
- Cancer and Metabolism Laboratory, Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Anita Nasrallah
- Cancer and Metabolism Laboratory, Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Lluis Fajas
- Cancer and Metabolism Laboratory, Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| |
Collapse
|
43
|
Terciolo C, Dobric A, Ouaissi M, Siret C, Breuzard G, Silvy F, Marchiori B, Germain S, Bonier R, Hama A, Owens R, Lombardo D, Rigot V, André F. Saccharomyces boulardii CNCM I-745 Restores intestinal Barrier Integrity by Regulation of E-cadherin Recycling. J Crohns Colitis 2017; 11:999-1010. [PMID: 28333335 DOI: 10.1093/ecco-jcc/jjx030] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 02/21/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Alteration in intestinal permeability is the main factor underlying the pathogenesis of many diseases affecting the gut, such as inflammatory bowel disease [IBD]. Characterization of molecules targeting the restoration of intestinal barrier integrity is therefore vital for the development of alternative therapies. The yeast Saccharomyces boulardii CNCM I-745 [Sb], used to prevent and treat antibiotic-associated infectious and functional diarrhea, may have a beneficial effect in the treatment of IBD. METHODS We analyzed the impact of Sb supernatant on tissue integrity and components of adherens junctions using cultured explants of colon from both IBD and healthy patients. To evaluate the pathways by which Sb regulates the expression of E-cadherin at the cell surface, we developed in vitro assays using human colonic cell lines, including cell aggregation, a calcium switch assay, real-time measurement of transepithelial electrical resistance [TEER] and pulse-chase experiments. RESULTS We showed that Sb supernatant treatment of colonic explants protects the epithelial morphology and maintains E-cadherin expression at the cell surface. In vitro experiments revealed that Sb supernatant enhances E-cadherin delivery to the cell surface by re-routing endocytosed E-cadherin back to the plasma membrane. This process, involving Rab11A-dependent recycling endosome, leads to restoration of enterocyte adherens junctions, in addition to the overall restoration and strengthening of intestinal barrier function. CONCLUSION These findings open new possibilities of discovering novel options for prevention and therapy of diseases that affect intestinal permeability.
Collapse
Affiliation(s)
- Chloé Terciolo
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| | - Aurélie Dobric
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| | - Mehdi Ouaissi
- Aix-Marseille Université, Inserm, AP-HM, UMR 911, CRO2, Marseille, France
| | - Carole Siret
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| | - Gilles Breuzard
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| | - Françoise Silvy
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| | | | | | - Renaté Bonier
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| | - Adel Hama
- Ecole des Mines de Saint Etienne, BEL, Gardanne, France
| | - Roisin Owens
- Ecole des Mines de Saint Etienne, BEL, Gardanne, France
| | | | - Véronique Rigot
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| | - Frédéric André
- Aix-Marseille Université, Inserm, UMR 911, CRO2, Marseille, France
| |
Collapse
|
44
|
Niranjan R, Thakur AK. The Toxicological Mechanisms of Environmental Soot (Black Carbon) and Carbon Black: Focus on Oxidative Stress and Inflammatory Pathways. Front Immunol 2017; 8:763. [PMID: 28713383 PMCID: PMC5492873 DOI: 10.3389/fimmu.2017.00763] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/16/2017] [Indexed: 12/29/2022] Open
Abstract
The environmental soot and carbon blacks (CBs) cause many diseases in humans, but their underlying mechanisms of toxicity are still poorly understood. Both are formed after the incomplete combustion of hydrocarbons but differ in their constituents and percent carbon contents. For the first time, “Sir Percival Pott” described soot as a carcinogen, which was subsequently confirmed by many others. The existing data suggest three main types of diseases due to soot and CB exposures: cancer, respiratory diseases, and cardiovascular dysfunctions. Experimental models revealed the involvement of oxidative stress, DNA methylation, formation of DNA adducts, and Aryl hydrocarbon receptor activation as the key mechanisms of soot- and CB-induced cancers. Metals including Si, Fe, Mn, Ti, and Co in soot also contribute in the reactive oxygen species (ROS)-mediated DNA damage. Mechanistically, ROS-induced DNA damage is further enhanced by eosinophils and neutrophils via halide (Cl− and Br−) dependent DNA adducts formation. The activation of pulmonary dendritic cells, T helper type 2 cells, and mast cells is crucial mediators in the pathology of soot- or CB-induced respiratory disease. Polyunsaturated fatty acids (PUFAs) were also found to modulate T cells functions in respiratory diseases. Particularly, telomerase reverse transcriptase was found to play the critical role in soot- and CB-induced cardiovascular dysfunctions. In this review, we propose integrated mechanisms of soot- and CB-induced toxicity emphasizing the role of inflammatory mediators and oxidative stress. We also suggest use of antioxidants and PUFAs as protective strategies against soot- and CB-induced disorders.
Collapse
Affiliation(s)
- Rituraj Niranjan
- Department of Biological Sciences and Bioengineering (BSBE), Indian Institute of Technology Kanpur, Kanpur, India
| | - Ashwani Kumar Thakur
- Department of Biological Sciences and Bioengineering (BSBE), Indian Institute of Technology Kanpur, Kanpur, India
| |
Collapse
|
45
|
Murray M, Zhou F. Trafficking and other regulatory mechanisms for organic anion transporting polypeptides and organic anion transporters that modulate cellular drug and xenobiotic influx and that are dysregulated in disease. Br J Pharmacol 2017; 174:1908-1924. [PMID: 28299773 DOI: 10.1111/bph.13785] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/01/2017] [Accepted: 03/05/2017] [Indexed: 12/25/2022] Open
Abstract
Organic anion transporters (OATs) and organic anion-transporting polypeptides (OATPs), encoded by a number of solute carrier (SLC)22A and SLC organic anion (SLCO) genes, mediate the absorption and distribution of drugs and other xenobiotics. The regulation of OATs and OATPs is complex, comprising both transcriptional and post-translational mechanisms. Plasma membrane expression is required for cellular substrate influx by OATs/OATPs. Thus, interest in post-translational regulatory processes, including membrane targeting, endocytosis, recycling and degradation of transporter proteins, is increasing because these are critical for plasma membrane expression. After being synthesized, transporters undergo N-glycosylation in the endoplasmic reticulum and Golgi apparatus and are delivered to the plasma membrane by vesicular transport. Their expression at the cell surface is maintained by de novo synthesis and recycling, which occurs after clathrin- and/or caveolin-dependent endocytosis of existing protein. Several studies have shown that phosphorylation by signalling kinases is important for the internalization and recycling processes, although the transporter protein does not appear to be directly phosphorylated. After internalization, transporters that are targeted for degradation undergo ubiquitination, most likely on intracellular loop residues. Epigenetic mechanisms, including methylation of gene regulatory regions and transcription from alternate promoters, are also significant in the regulation of certain SLC22A/SLCO genes. The membrane expression of OATs/OATPs is dysregulated in disease, which affects drug efficacy and detoxification. Several transporters are expressed in the cytoplasmic subcompartment in disease states, which suggests that membrane targeting/internalization/recycling may be impaired. This article focuses on recent developments in OAT and OATP regulation, their dysregulation in disease and the significance for drug therapy.
Collapse
Affiliation(s)
- Michael Murray
- Pharmacogenomics and Drug Development Group, Discipline of Pharmacology, School of Medical Sciences, The University of Sydney, NSW, 2006, Australia
| | - Fanfan Zhou
- Faculty of Pharmacy, The University of Sydney, NSW, 2006, Australia
| |
Collapse
|
46
|
Stamatovic SM, Johnson AM, Sladojevic N, Keep RF, Andjelkovic AV. Endocytosis of tight junction proteins and the regulation of degradation and recycling. Ann N Y Acad Sci 2017; 1397:54-65. [PMID: 28415156 DOI: 10.1111/nyas.13346] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/08/2017] [Accepted: 03/09/2017] [Indexed: 12/31/2022]
Abstract
Internalization of tight junction (TJ) proteins from the plasma membrane is a pivotal mechanism regulating TJ plasticity and function in both epithelial and endothelial barrier tissues. Once internalized, the TJ proteins enter complex vesicular machinery, where further trafficking is directly dependent on the initiating stimulus and downstream signaling pathways that regulate the sorting and destiny of TJ proteins, as well as on cell and barrier responses. The destiny of internalized TJ proteins is recycling to the plasma membrane or sorting to late endosomes and degradation. This review highlights recent advances in our knowledge of endocytosis and vesicular trafficking of TJ proteins in both epithelial and endothelial cells. A greater understanding of these processes may allow for the development of methods to modulate barrier permeability for drug delivery or prevent barrier dysfunction in disease states.
Collapse
Affiliation(s)
| | | | | | - Richard F Keep
- Neurosurgery.,Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan
| | | |
Collapse
|
47
|
Qin X, Wang J, Wang X, Liu F, Jiang B, Zhang Y. Targeting Rabs as a novel therapeutic strategy for cancer therapy. Drug Discov Today 2017; 22:1139-1147. [PMID: 28390930 DOI: 10.1016/j.drudis.2017.03.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 02/18/2017] [Accepted: 03/21/2017] [Indexed: 12/13/2022]
Abstract
Rab GTPases constitute the largest family of small GTPases. Rabs regulate not only membrane trafficking but also cell signaling, growth and survival, and development. Increasingly, Rabs and their effectors are shown to be overexpressed or subject to loss-of-function mutations in a variety of disease settings, including cancer progression. This review provides an overview of dysregulated Rab proteins in cancer, and highlights the signaling and secretory pathways in which they operate, with the aim of identifying potential avenues for therapeutic intervention. Recent progress and perspectives for direct and/or indirect targeting of Rabs are also summarized.
Collapse
Affiliation(s)
- Xiaoyu Qin
- Oncology Department, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201900, China
| | - Jiongyi Wang
- Oncology Department, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201900, China
| | - Xinxin Wang
- Oncology Department, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201900, China
| | - Feng Liu
- Oncology Department, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201900, China
| | - Bin Jiang
- Oncology Department, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201900, China.
| | - Yanjie Zhang
- Oncology Department, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201900, China.
| |
Collapse
|
48
|
Gankhuyag N, Yu KN, Davaadamdin O, Lee S, Cho WY, Park C, Jiang HL, Singh B, Chae CH, Cho MH, Cho CS. Suppression of Tobacco Carcinogen-Induced Lung Tumorigenesis by Aerosol-Delivered Glycerol Propoxylate Triacrylate-Spermine Copolymer/Short Hairpin Rab25 RNA Complexes in Female A/J Mice. J Aerosol Med Pulm Drug Deliv 2017; 30:81-90. [PMID: 27792477 DOI: 10.1089/jamp.2016.1301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Rab25, a member of Rab family of small guanosine triphosphatase, is associated with progression of various types of human cancers, including lung cancer, the leading cause of cancer-associated deaths around the globe. METHODS In this study, we report the gene therapeutic effect of short hairpin Rab25 RNA (shRab25) on 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK)-induced lung tumorigenesis in female A/J mice. Initially, mice (6 weeks old) were injected with single dose of NNK (2 mg/0.1 mL saline/mouse) by intraperitoneal injection to induce the tumor. Eight weeks later, shRab25 was complexed with glycerol propoxylate triacrylate-spermine (GPT-SPE) copolymer and delivered into tobacco-induced lung cancer models through a nose-only inhalation system twice a week for 2 months. RESULTS GPT-SPE/shRab25 largely decreased the tobacco-induced tumor numbers and tumor volume in the lungs compared to GPT-SPE- or GPT-SPE/shScr-delivered groups. Remarkably, aerosol-delivered GPT-SPE/shRab25 significantly decreased the expression level of Rab25 and other prominent apoptosis-related proteins in female A/J mice. The apoptosis in these mice was determined by detecting the expression level of Bcl-2, proliferating cell nuclear antigen, Bax, and further confirmed by TUNEL assay. CONCLUSIONS Our results strongly confirm the tumorigenic role of Rab25 in tobacco carcinogen-induced lung cancer and hence demonstrate aerosol delivery of shRab25 as a therapeutic target for lung cancer treatment.
Collapse
Affiliation(s)
- Nomundelger Gankhuyag
- 1 Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research and The Research Institute of Veterinary Science, College of Veterinary Medicine, Seoul National University , Seoul 151-742, Republic of Korea
| | - Kyeong Nam Yu
- 1 Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research and The Research Institute of Veterinary Science, College of Veterinary Medicine, Seoul National University , Seoul 151-742, Republic of Korea
| | - Orkhonselenge Davaadamdin
- 1 Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research and The Research Institute of Veterinary Science, College of Veterinary Medicine, Seoul National University , Seoul 151-742, Republic of Korea
| | - Somin Lee
- 1 Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research and The Research Institute of Veterinary Science, College of Veterinary Medicine, Seoul National University , Seoul 151-742, Republic of Korea
| | - Won Young Cho
- 1 Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research and The Research Institute of Veterinary Science, College of Veterinary Medicine, Seoul National University , Seoul 151-742, Republic of Korea
| | - Changhoon Park
- 2 Laboratory of Pathology, College of Veterinary Medicine, Seoul National University , Seoul, Korea
| | - Hu-Lin Jiang
- 3 State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University , Nanjing, China
| | - Bijay Singh
- 4 Department of Agricultural Biotechnology, Research Institute for Agriculture and Life Sciences, Seoul National University , Seoul, Korea
| | - Chan-Hee Chae
- 2 Laboratory of Pathology, College of Veterinary Medicine, Seoul National University , Seoul, Korea
| | - Myung-Haing Cho
- 1 Laboratory of Toxicology, BK21 PLUS Program for Creative Veterinary Science Research and The Research Institute of Veterinary Science, College of Veterinary Medicine, Seoul National University , Seoul 151-742, Republic of Korea
| | - Chong-Su Cho
- 4 Department of Agricultural Biotechnology, Research Institute for Agriculture and Life Sciences, Seoul National University , Seoul, Korea
| |
Collapse
|
49
|
Levy E. Exosomes in the Diseased Brain: First Insights from In vivo Studies. Front Neurosci 2017; 11:142. [PMID: 28386213 PMCID: PMC5362612 DOI: 10.3389/fnins.2017.00142] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 03/07/2017] [Indexed: 12/20/2022] Open
Abstract
Extracellular vesicles (EVs) are nanoscale size vesicles secreted by cells and are important mediators of intercellular communication and genetic exchange. Exosomes, EVs generated in endosomal multivesicular bodies, have been the focus of numerous publications as they have emerged as clinically valuable markers of disease states. Exosomes have been mostly studied from conditioned culture media and body fluids, with the difficulty of isolating exosomes from tissues having delayed their study in vivo. The implementation of a method designed to isolate exosomes from tissues, however, has yielded the first insights into characteristics of exosomes in the brain. It has been observed that brain exosomes from murine models of neurodegenerative diseases and human postmortem brains tend to mirror the protein content of the cells of origin, and interestingly, they are enriched with toxic proteins. Whether this enrichment with neurotoxic proteins is beneficial by relieving neurons of accumulated toxic material or detrimental to the brain by propagating pathogenicity throughout the brain remains to be answered. Here is summarized the first group of studies describing exosomes isolated from brain, results that demonstrate that exosomes in vivo reflect complex multicellular pathogenic processes in neurodegenerative disorders and the brain's response to injury and damage.
Collapse
Affiliation(s)
- Efrat Levy
- Departments of Psychiatry, Biochemistry and Molecular Pharmacology, New York University Langone Medical CenterNew York, NY, USA; Center for Dementia Research, Nathan S. Kline Institute for Psychiatric ResearchOrangeburg, NY, USA
| |
Collapse
|
50
|
Aquino-Cortez A, Pinheiro BQ, Lima DBC, Silva HVR, Mota-Filho AC, Martins JAM, Rodriguez-Villamil P, Moura AA, Silva LDM. Proteomic characterization of canine seminal plasma. Theriogenology 2017; 95:178-186. [PMID: 28460673 DOI: 10.1016/j.theriogenology.2017.03.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 12/31/2022]
Abstract
The present study was conducted to identify the major proteome of the sperm-rich fraction and prostatic fraction of canine seminal plasma. Three semen samples from four healthy dogs were obtained by digital manipulation. The pre-sperm fraction, sperm-rich fraction and prostatic fraction were separated from each ejaculate. Immediately after sperm analysis, a protease inhibitor was added to the sperm-rich fraction and prostatic fraction, and the fractions were separately centrifuged and frozen at -80 °C. The samples were thawed, re-centrifuged, and the total protein concentration was determined. Samples were subjected to 1D SDS-PAGE and Coomassie-blue stained gels, were analyzed by Quantity One 1D Analysis Software. Bands detected in the gels were excised and proteins subjected to digestion with trypsin. Proteins were identified by nano-HPLC-MS and tools of bioinformatics. Tandem mass spectrometry allowed the detection of 268 proteins in the gels of sperm-rich fraction and prostatic fraction of canine ejaculate. A total of 251 proteins were common to the sperm-rich and prostatic fractions, while 17 proteins were present in the sperm-rich fraction and absent in the prostatic fraction. The intensity of the bands detected in range 1 and 2 represented 46.5% of all of the band intensities detected in the 1D gels for proteins of the sperm-rich fraction and 53.0% of all bands in the prostatic fraction. Arginine esterase and lactotransferrin precursor were the protein with the highest intensity observed in the both fractions. Among the proteins present only in the sperm-rich fraction, the proteins UPF0764 protein C16orf89 homolog and epididymal-specific lipocalin-9 were the most abundant. In conclusion, canine sperm-rich fraction and prostatic fraction express a very diverse set of proteins, with unique biochemical properties and functions. Moreover, although most proteins are common to both sperm-rich fraction and prostatic fraction, there are some exclusive proteins in sperm-rich fraction.
Collapse
Affiliation(s)
- Annice Aquino-Cortez
- Laboratory of Carnivores Reproduction, State University of Ceara, Fortaleza, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|